2024-03-28T22:27:38Z
http://dl6.globalstf.org/index.php/jet/oai
oai:ojs.dl6.globalstf.org:article/1319
2015-08-28T09:25:11Z
jet:ART
"150828 2015 eng "
dc
Numerical and Experimental Investigation of a Wind Catcher with Horizontally-arranged Heat Transfer Devices (HHTD)
Calautit, John Kaiser
Hughes, Ben Richard
O’Connor, Dominic
Shahzad, Sally Salome
Buildings; indoor air; natural ventilation; passive cooling; sustainable
This study investigates the ventilation and thermal performance of a wind catcher with horizontally-arrange heat transfer devices (HHTD) for passive cooling in hot climates using numerical and experimental methods. Rapid prototyping was used to create a detailed experimental scale model. Low-speed wind tunnel and flow visualiastion tests were conducted on the wind catcher model with HHTD. The wind tunnel test setup was recreated in the Computational Fluid Dynamics (CFD) simulation. The comparison between the experimental data and simulation results demonstrated good agreement. The results showed that the wind catcher with HHTD was capable of reducing the indoor air temperature by up to 12 K. The technology presented here is subject to a patent application (1321709.6).
GSTF Journal of Engineering Technology (JET)
2015-08-28 00:00:00
application/pdf
http://dl6.globalstf.org/index.php/jet/article/view/1319
GSTF Journal of Engineering Technology (JET); Vol 3, No 2 (2015): GSTF Journal of Engineering Technology (JET)
eng
Copyright (c) 2017 GSTF Journal of Engineering Technology (JET)
oai:ojs.dl6.globalstf.org:article/746
2014-08-29T08:12:54Z
jet:ART
"140829 2014 eng "
dc
Functionalization and Characterization of Immobilized Metal Affinity Hydrogel Membranes
Nave, Felecia M.
Thompson, Audie
Kirksey, Veniece
poly vinyl alcohol, Nitrilotriacetic acid, glutaraldehyde
Previous studies have shown that functionalization
of hydrogel membranes with metal affinity ligands increases the
separation potential of the membranes for purification of
biological systems. To achieve separation, histidines that are
exposed on the proteins surface are attracted and attach to the
metal ion within the IMA membrane matrix. The effectiveness of
these membranes depends on several factors including, but not
limited to, type of chelating group, the metal ion, and solution
buffer. This paper is concerned with crosslinking of poly (vinyl)
alcohol (PVA) with varied degrees of crosslinking that was
subsequently functionalized with the immobilized metal affinity
(IMA) group, that included a spacing element, (1, 4 Butanediol
Diglycidyl ether (1,4 BDE)), chelator (NTA (Nitrilotriacetic
acid)), and metal (Nickel (Ni2+). The impact of chelating ligand
and glutaraldehyde concentration on the swelling and bound
metal content was determined. Additionally, Fourier-transform
infrared spectroscopy (FTIR) was used to examine the functional
groups for the control (without metal attached) and affinity (with
metal attached) membranes. Ultimately, this study suggests that
crosslinking membranes with a higher glutaraldehyde percentage
yielded a higher content of bound nickel.
GSTF Journal of Engineering Technology (JET)
2014-08-29 07:41:33
application/pdf
http://dl6.globalstf.org/index.php/jet/article/view/746
GSTF Journal of Engineering Technology (JET); Vol 2, No 1 (2013): Journal of Engineering Technology (JET)
eng
Copyright (c) 2017 GSTF Journal of Engineering Technology (JET)
oai:ojs.dl6.globalstf.org:article/1552
2016-04-20T06:34:40Z
jet:ART
"160411 2016 eng "
dc
Procedural Modeling of a Residential Site Using the Interoperability between the GIS and CityEngine An Adaptation of the Radburn Type Cul-de-sac Roadsystem and Housing
Choei, Nae-Young
Jeon, Seok-Hoon
interoperability; CityEngine; procedural modeling; cul-de-sac; site planning
The main objective of this study is to observe the procedural modeling technique run by the CG Architecture design rules. Also, the interoperability of the design data between the CityEngine and GIS databases are to be tested for an efficient manipulation of the 2D land information and the 3D building information. The study uses the Korean National Geographic Information System databases as well as aerial image data from the National Geographic Information Institute. The study also takes Samsong area in Goyang City, Korea, as its study area. In addition, the field survey photographs of Radburn neighborhood, New Jersey, in the US are also presented to render the target site planning prototype.
GSTF Journal of Engineering Technology (JET)
2016-04-11 02:59:04
application/pdf
http://dl6.globalstf.org/index.php/jet/article/view/1552
GSTF Journal of Engineering Technology (JET); Vol 3, No 4 (2016): Journal on Engineering Technology (JET)
eng
Copyright (c) 2017 GSTF Journal of Engineering Technology (JET)
oai:ojs.dl6.globalstf.org:article/777
2014-08-29T08:12:54Z
jet:ART
"140829 2014 eng "
dc
Experimental Investigation of Wave Structure Interactions
Alsaad, Alaa
Ali, Anis Mohamad
Nielsen, Peter
Baldock, Tom
Wave overtopping, Reflection coefficient, Seawall, Surf similarity parameter, Wave force
In the present work, physical models have been
built to experimentally investigate the wave structure
interactions. The paper is focusing on the effects of wave
overtopping on wave reflection and wave forces at a seawall. The
tests are implemented in the laboratory of the Coastal
Engineering Research Center, the University of Queensland. The
seawall model testing was performed in a wave flume using
regular waves. Three types of waves that influence the
relationship between wave overtopping and wave force on
seawall are considered; non-breaking waves, waves breaking on
the wall, and broken waves impacting on the wall. In order to
approximate wave reflection from a vertical seawall fronted by a
smooth impermeable slope, the Seelig method is adopted to
estimate the wave reflection coefficients in cases of overtopping.
The unknown coefficients of this approach have been estimated
from fitting of the experimental data obtained in this study. The
resulting formula is applicable for a range of the surf similarity
parameter between 1.0 and 4.5 . The predicted reflection
coefficients exhibit a good level of agreement with those
measured. A power law type expression, written in terms of
dimensionless parameters, is introduced to estimate the wave
forces on a vertical seawall during wave overtopping. The
regression shows good correlation to the data by using this form
of equation.
GSTF Journal of Engineering Technology (JET)
2014-08-29 07:41:33
application/pdf
http://dl6.globalstf.org/index.php/jet/article/view/777
GSTF Journal of Engineering Technology (JET); Vol 2, No 1 (2013): Journal of Engineering Technology (JET)
eng
Copyright (c) 2017 GSTF Journal of Engineering Technology (JET)
oai:ojs.dl6.globalstf.org:article/1808
2017-03-25T01:28:14Z
jet:ART
"170324 2017 eng "
dc
Visual Perception of Space and Parametric Design: A Brief Discussion
Basu, Tamalee
IIEST
Ghosh, Mainak
Indian Institute of Technology Kharagpur
Parametric design; Visual perception; Environmental perception; Form; Built Space; Spatial experience
The use of Parametric modeling techniques in the design process of buildings and built forms produce some characteristic formal expression which many times produce a striking visual interest. This paper outlines how this kind of formal expression influences visual perception. However, this aspect is not considered objectively in the design process. With the help of parametric design, one now has the liberty to explore different design alternatives in less time and with more ease. The paper explores the possibilities of leveraging this technology to parameterize the formal expression of a built space, that thereafter shape up human perception and subsequent decision making - achieving more holistic built-space design approach.
GSTF Journal of Engineering Technology (JET)
2017-03-24 07:54:58
application/pdf
http://dl6.globalstf.org/index.php/jet/article/view/1808
GSTF Journal of Engineering Technology (JET); Vol 4, No 2 (2017): Journal of Engineering Technology (JET)
eng
Copyright (c) 2017 GSTF Journal of Engineering Technology (JET)
oai:ojs.dl6.globalstf.org:article/886
2021-02-04T11:29:02Z
jet:ART
"140903 2014 eng "
dc
Two Stroke High Efficient Gate Operated Magnetic Engine: Basis for Modeling Approach
Gattani, Manoj
K Sahoo, Pradeepta
Diwan, Parag
Magnetic engine, GOPI engine, gate, shield material, permanent magnets
The present report focuses on the fundamentals of modeling of a permanent magnet based gate operated repulsive magnetic piston engine further referred to as GOPI engine, applicable to electrical and mechanical power generation in large-scale system. In GOPI engine, the motion of the piston is controlled with help of a gate made up of magnetic shield material. The working of the engine depends upon magnetic and mechanical material properties of the gate like thickness of the gate, type of the shield material, distance of the gate from magnets, the pole strength of magnets and mechanism used to operate the gate. In GOPI engine the removal of complete mechanism of fuel burning process of the traditional engine gives a number of advantages like low frictional losses, reduced manufacturing cost, maintenance cost and compactness.
GSTF Journal of Engineering Technology (JET)
2014-09-03 10:12:43
application/pdf
http://dl6.globalstf.org/index.php/jet/article/view/886
GSTF Journal of Engineering Technology (JET); Vol 2, No 4 (2014): Journal of Engineering Technology (JET)
eng
Copyright (c) 2017 GSTF Journal of Engineering Technology (JET)
oai:ojs.dl6.globalstf.org:article/1951
2020-06-11T02:31:03Z
jet:ART
"200126 2020 eng "
dc
BIM Standards Around The World A Review of BIM Standards in the Global AEC Industry and BIM Roles of Project Stakeholders
AbuEbeid, Marwan
Nielsen, Ysemin
BIM, standards/guidelines, project stakeholders, roles
This paper investigates the nature of national BIM standards amoung various countries and examine the presence of standards that clarify the BIM roles of project stakeholders such as project management consultant (PMC) at the various stages of the construction project lifecycle, including inception, design and construction. A research has been conducted which case BIM studies from UK, Norway, Finland, US, Canada, Singapore and Australia were reviewed. The study indicates that current BIM standards have mainly focused on explaining the model standards and BIM requirements. There are only a few national standards, such as the case of Singapore, which highlight the BIM objectives at each stage of the construction process, the project stakeholders that should be involved, and the deliverables. The specific roles of the various project stakeholders for each objective are not adequately clarified and hence likely to vary from one project and organization to another
GSTF Journal of Engineering Technology (JET)
2020-01-26 17:14:06
application/pdf
http://dl6.globalstf.org/index.php/jet/article/view/1951
GSTF Journal of Engineering Technology (JET); Vol 5, No 1 (2018): Journal of Engineering Technology (JET)
eng
Copyright (c) 2020 GSTF Journal of Engineering Technology (JET)
oai:ojs.dl6.globalstf.org:article/733
2014-08-29T03:40:42Z
jet:ART
"140829 2014 eng "
dc
Ingredients Composition Formulations and development of a new friction composite for friction lining applications using MINITAB16
Reddy, Dareddy Ramana
Naik, Banoth Balu
Bio friction material; material substitution; brake pads, Taguchi, Design of Experiments
Friction lining is an essential part of braking system. Friction materials have their significant role for transmission in various machines. Their composition keeps on changing to keep pace with technological development and environmental requirements. Earlier asbestos has been used as a friction material because of its good physical and chemical properties. But later researchers eyed that there are many health hazards associated with asbestos handling. The average disk temperature and average stopping time for pass is increased and it has poor dimensional stability. Hence it has lost favor and several alternative materials are being replaced these days. In this work a non-asbestos bio-friction material is enlighten which is developed using an Agro-waste material palm kernel shell (PKS) along with other Ingredients. Among the agro-waste shells investigated the PKS exhibited more favorable properties. Taguchi optimization technique is used to achieve optimal formulation of the friction material. The developed friction material is used to produce automobile disk brake pads. The developed brake pads were tested for functional performance on a specially designed experimental test rig. Physical properties of this new material along with wear properties have been determined and reported in this paper. When compared with premium asbestos based commercial brake pad PKS pads were found to have performed satisfactorily in terms of amount of wear and stopping time.
GSTF Journal of Engineering Technology (JET)
2014-08-29 03:31:25
application/pdf
http://dl6.globalstf.org/index.php/jet/article/view/733
GSTF Journal of Engineering Technology (JET); Vol 1, No 1 (2012): Journal of Engineering Technology (JET)
eng
Copyright (c) 2017 GSTF Journal of Engineering Technology (JET)
oai:ojs.dl6.globalstf.org:article/1483
2015-12-04T02:41:19Z
jet:ART
"151204 2015 eng "
dc
An Alternative Infrastructure Optioneering Methodology Techno-Economic Assessment Tools for Urban Development Projects
Anda, Martin
Ploumis, Max
alternative infrastructure; technology; assessment tools; urban renewal; sustainability.
Cities around the world are in transition seeking to achieve some level of sustainability and considering various low carbon and water sensitive urban renewal scenarios. This paper studies and compares the techno-economic assessment tools that can be used to identify and select alternative infrastructure options for urban water cycle systems, energy efficiency and generation, waste management and resource recovery in cities. The strengths and weakness of numerous decentralised technology options are investigated along with various assessment tools. An early and simplified assessment tool will be derived from various socio-technical and economic techno-assessment methods. The tool will then applied to the proposed Canning city centre project, an urban renewal project in the Perth metropolitan area of Western Australia.
GSTF Journal of Engineering Technology (JET)
2015-12-04 02:09:17
application/pdf
http://dl6.globalstf.org/index.php/jet/article/view/1483
GSTF Journal of Engineering Technology (JET); Vol 3, No 3 (2015): Journal of Engineering Technology (JET)
eng
Copyright (c) 2017 GSTF Journal of Engineering Technology (JET)
oai:ojs.dl6.globalstf.org:article/768
2014-08-29T08:12:54Z
jet:ART
"140829 2014 eng "
dc
A Theory of Urban Design
., Myungshig Kim
Genius loci; urban places; urban interiors
This article explores theoretical basis for urban
design. The first site this article traces is meaning of place. The
second site this article investigates is the contextual rationale of
urban place. And the last site this article considers is
fundamental approaches to urban design in all theoretical
aspects through understanding the context of urban place as an
idea of urban interior. It thus, provides the theoretical, reflective
aspects and to urban design in systematically deploying the
meanings of place, urban interior, and genius loci.
GSTF Journal of Engineering Technology (JET)
2014-08-29 07:41:33
application/pdf
http://dl6.globalstf.org/index.php/jet/article/view/768
GSTF Journal of Engineering Technology (JET); Vol 2, No 1 (2013): Journal of Engineering Technology (JET)
eng
Copyright (c) 2017 GSTF Journal of Engineering Technology (JET)
oai:ojs.dl6.globalstf.org:article/1694
2016-08-19T12:34:27Z
jet:ART
"160819 2016 eng "
dc
The Effectiveness of Performance Based Design to Establish Architectural Feature of Structural Design for Slender Building
Arasy, Shef Amir
Structural Engineer PTWiratman
Jakarta, Indonesia 12540
Wangsadinata, Wiratman
President Director PT Wiratman
Jakarta, Indonesia 12540
Budiono, Bambang
Advisor PT Wiratman
Jakarta, Indonesia 12540
Patrisia, Junisa Arini
Structural Engineer PT Wiratman
Jakarta, Indonesia 12540
Slender Building, 14 Stories, Performance Based Design, Maximum Considered Earthquake and Jakarta
This research focuses on the building with reinforcement
concrete and has 60,2 meter of height above the ground (14
stories). This system of the slender building has dual system
which has shear wall and column to restraint lateral earthquake.
The analysis method of this research is comparing behavior
buildings designed based on code and alternative design due to
earthquake. The building is also designed under MCE level due
to strong earthquake risk in Jakarta. For preliminary design, the
building is designed based on prescriptive code. The optimization
is conducted based on performance based design guidelines (PBD
guidelines). In this case, the value of SNI 1726-2012 is larger
than MCE level because the code requires minimum strength
0.85CsW. Moreover, the acceptance criteria of code still requires
strength concept for all element of the building. The research
objectives are to assess the effectiveness of PBD in establishing
architectural feature of structural design. The result of this
research is the building performance which is designed under
MCE level achieves Life Safety. In this case, the design based on
PBD has reduced 30% column size with rebar 1% for all
columns.
GSTF Journal of Engineering Technology (JET)
2016-08-19 12:05:50
application/pdf
http://dl6.globalstf.org/index.php/jet/article/view/1694
GSTF Journal of Engineering Technology (JET); Vol 4, No 1 (2016): Journal of Engineering Technology (JET)
eng
Copyright (c) 2017 GSTF Journal of Engineering Technology (JET)
oai:ojs.dl6.globalstf.org:article/802
2021-02-04T11:57:30Z
jet:ART
"140829 2014 eng "
dc
Investigation on the Mechanical Properties of TIG Welded AA6061 Alloy Weldments Using Different Aluminium Fillers
., L.H. Shah
Abdul Razak, Nur Azhani
., A. Juliawati
., M. Ishak
TIG welding, AA6061, corrosion, Vickers hardness
In this research, the effect of filler weld material on
the mechanical properties of tungsten inert gas (TIG) welded
AA6061 alloy weldments have been investigated. The
microstructure of the base metal (BM) as well as weld metal
(WM) and heat affected zone (HAZ) was analyzed using optical
microscopy and scanning electron microscopy (SEM), and the
Vickers hardness of the samples were compared. Corrosion
resistance of the weld area was investigated in natural seawater
solution. Results for both filler samples indicate that the strength
of the WMs and HAZs is lower compared to BMs. In addition to
that, the weld joints of ER4043 samples show relatively higher
hardness compared to ER4047 samples. The corrosion test
results show that ER4043 sample has a lower corrosion rate value
compared to ER4047. It can be concluded that ER4043 samples
show better Vickers hardness value and corrosion resistance
compared to ER4047 samples
GSTF Journal of Engineering Technology (JET)
2014-08-29 09:03:07
application/pdf
http://dl6.globalstf.org/index.php/jet/article/view/802
GSTF Journal of Engineering Technology (JET); Vol 2, No 2 (2013): Journal of Engineering Technology (JET)
eng
Copyright (c) 2017 GSTF Journal of Engineering Technology (JET)
oai:ojs.dl6.globalstf.org:article/1930
2017-08-19T11:32:09Z
jet:ART
"170819 2017 eng "
dc
An Urban Biom as an Alternative to Sustainable City.
Kleszcz, Justyna
Sobierajewicz, Piotr
biom, biodiversity of the city, polyspecies area, animal - aided architecture and town planning, urban greenfields, sustainable urban development
Using the idea of sustainability in terms of not having
any alternative forms of modern town planning gives a false
image of the only chance humanity has to overcome the problem
of urban withering. The paper in to show the idea of urban biom
/ urban polyspecific areas as a form of redeveloping cities in nonformal
and non- technical way, which is nowadays associated
mostly with the idea of sustainability – energy and water
efficiency, green technologies of the future and so on. Biom is a
new form of identifying green areas, not only as passive, but
mostly active form of urban development basing not only on flora
but also urban fauna, differing and depending on geographic
region in which the city is located. By leaving the idea of
programmed zoning of eco- cities a new kind of urban utility
zoning basing on the idea of biom is to be created.
The beginning of change can be defined by technological,
cultural, industrial, communication progress, which "liberated"
large city areas or supported them for the inhabitants. A
significant reduction of restricted zone area, excluded from use,
but also occurring rapidly transformations of socio - political
form, which are often the next stage of the industrial revolution
resulted in the need to formulate a new development policy of
those empty spaces that remain in the place of former functions.
Simultaneously one can observe differences in the modern
approach towards animals as a part of urban nature and the
independence of modern man from immediate animal work, but
also lack of having daily contact with them in various forms of
humans' separation from nature.
GSTF Journal of Engineering Technology (JET)
2017-08-19 11:04:55
application/pdf
http://dl6.globalstf.org/index.php/jet/article/view/1930
GSTF Journal of Engineering Technology (JET); Vol 4, No 3 (2017): GSTF Journal of Engineering Technology (JET)
eng
Copyright (c) 2017 GSTF Journal of Engineering Technology (JET)
oai:ojs.dl6.globalstf.org:article/1125
2021-02-04T11:41:59Z
jet:ART
"131201 2013 eng "
dc
Effectiveness of Reactive Power Capability of Photo Voltaic Inverters to Maintain Voltage Profile in a Residential Distribution Feeder
Kabir, M. N.
Mishra, Y.
Photo Voltaic (PV), Peak demand, Rural networks, Voltage profile
Large penetration of rooftop PVs has resulted in unacceptable voltage profile in many residential distribution feeders. Limiting real power injection from PVs to alleviate over voltage problem is not feasible due to loss of green power and hence corresponding revenue loss. Reactive capability of the PV inverter can be a solution to address over voltage and voltage dip problems to some extent. This paper proposes an algorithm to utilize reactive capability of PV inverters and investigate their effectiveness for voltage improvement based on R/X ratio of the feeder. The length and loading level of the feeder for a particular R/X ratio to have acceptable voltage profile is also investigated. This can be useful for suburban design and residential distribution planning. Furthermore, coordination among different PVs using residential smart meters via a substation based controller is also proposed.
GSTF Journal of Engineering Technology (JET)
2015-04-30 09:22:48
application/pdf
http://dl6.globalstf.org/index.php/jet/article/view/1125
GSTF Journal of Engineering Technology (JET); Vol 2, No 3 (2013): Journal of Engineering Technology (JET)
eng
Copyright (c) 2017 GSTF Journal of Engineering Technology (JET)
oai:ojs.dl6.globalstf.org:article/722
2014-08-29T03:35:45Z
jet:ART
"140829 2014 eng "
dc
Sustainable Community Based Mangrove Plantation Projects: Three Case Studies from Palawan Island, The Philippines
Jayagoda, Dimithri Devinda
Community Participation, Environmental projects, Leadership, Mangroves, Sustainability
Undoubtedly, mangroves and associated wildlife show signs of degradation in almost every region of the world. Historical data proves that in 10 regions, there have been continuous mangrove losses between the periods 1980 to 2005. The Philippines have lost its mangrove cover quite severely. In 1920, the country had 500,000 hectares of mangrove cover that has reduced to 117,000 by the year 1995. The heavy loss of mangrove forest in the world is due largely to human activities. There are community based mangrove plantation and livelihood projects conducted in the City of Puerto Princesa, on Palawan Island, Philippines, namely “Love Affair with Nature”, “Firefly watch in Iwahig mangrove forest” and “Mangrove Paddleboat tour in Sabang” were implemented and continued by the true efforts of the lord mayor, Edward Hagedorn. Valentines day mangrove plantation has been continuing annually since 2003. Mangrove forests have provided nursery grounds for fish, prawns and crabs and as supported matter, which are valuable sources of food for crustaceans and fishes. A unique methodology has been used in this study and photography has been used to document many of the qualitative findings. These Mangrove Plantation and livelihood Projects can be adopted in various other islands in the Philippines and the rest of the world. Recommendations are given to further improve the mangrove plantation project and to also stabilize and increase community participation. The qualitative data gathered from the local high-ranking officials and academia in Puerto Princesa proves that the mangrove is no longer being harvested and is continuously regaining through both the natural and planting processes of reforestation and afforestation. Findings from the interviews with local community prove that everybody in the city is aware about the importance of mangroves and that they are participating in the planting of and protecting the mangroves planted area in every possible manner. These qualitative findings are proved by available quantitative national statistics and which clearly shows the mangrove forest cover and the upland forest cover are increasing in Puerto Princesa during the last two decades.
GSTF Journal of Engineering Technology (JET)
2014-08-29 03:31:25
application/pdf
http://dl6.globalstf.org/index.php/jet/article/view/722
GSTF Journal of Engineering Technology (JET); Vol 1, No 1 (2012): Journal of Engineering Technology (JET)
eng
Copyright (c) 2017 GSTF Journal of Engineering Technology (JET)
oai:ojs.dl6.globalstf.org:article/1472
2015-12-04T02:41:19Z
jet:ART
"151204 2015 eng "
dc
Improvement of Sound Insulation Performance of ALC Walls Using Mock-up Experiments
Haan, Chan H.
Hong, Seong S.
component; autoclaved lightweight concrete block; sound insulation performance; 1/1 scale mock-up experiment; computer modeling
Multi-unit dwelling has comprised the largest part of living in modern society where noise problems have become a social issue. Autoclaved lightweight concrete (ALC) panel and blocks have been widely used in residential, commercial and industrial buildings as its lightness and workability. However, the sound insulation performance of ALC is not high due to its light weight and the porousness. This study aimed to improve the sound insulation performance of ALC walls between housing units by changing the structure of the walls including layer of material, thickness of the air cavity, and connecting materials. In order to this, computer modeling and laboratory mock-up tests were undertaken to measure the STC of four different structures. As a result, the single-number quantities (Rw+C) of 61-68 dB, the first grade of sound insulation performance, can be acquired when ALC blocks were constructed with gypsum board and air cavity connected with metal or resilient channel.
GSTF Journal of Engineering Technology (JET)
2015-12-04 02:09:17
application/pdf
http://dl6.globalstf.org/index.php/jet/article/view/1472
GSTF Journal of Engineering Technology (JET); Vol 3, No 3 (2015): Journal of Engineering Technology (JET)
eng
Copyright (c) 2017 GSTF Journal of Engineering Technology (JET)
oai:ojs.dl6.globalstf.org:article/759
2014-08-29T08:12:54Z
jet:ART
"140829 2014 eng "
dc
Analysis of Copan Building Foundation Settlings, São Paulo, Brazil
Branco, Marcel
de Oliveira, Fabiana L.
Terms—building structure, Copan building, foundation settlings, Oscar Niemeyer
Copan Building has been one of the most important
works of the worldwide famous Brazilian architect Oscar
Niemeyer. Since its construction, differential settlings were
observed on its foundations and they are being monitored ever
since. The identification and the development of studies about
those pathological manifestations are the focus of this paper.
GSTF Journal of Engineering Technology (JET)
2014-08-29 07:41:33
application/pdf
http://dl6.globalstf.org/index.php/jet/article/view/759
GSTF Journal of Engineering Technology (JET); Vol 2, No 1 (2013): Journal of Engineering Technology (JET)
eng
Copyright (c) 2017 GSTF Journal of Engineering Technology (JET)
oai:ojs.dl6.globalstf.org:article/1684
2016-08-19T12:34:27Z
jet:ART
"160819 2016 eng "
dc
Human-Based Design and Digital Fabrication: Behavioral Mapping Parametric Knitter (BMPK)
Kalantari, Saleh
Washington State University
Pullman, WA
Poustinchi, Ebrahim
College of Design University of Kentucky Lexington, KY
Ahmadi, Nooshin
College of Art and
Architecture
University of Idaho
Moscow, ID
component; Human-based Design, Smart Environment, Wayfinding, Stress Reduction, Digital Fabrication, Design Optimization, Robot Motion Planning, Autonomous Control
Reducing human stress has become a critical issue in
contemporary architecture. The design of the physical
environment plays an important role in the ease of wayfinding as
people navigate a path through their surroundings. The goal of
this project is to create an automated system that can analyze
human behavior within a building, generate architectural forms
based on the results, and then fabricate an optimal interior space
design for facilitating the observed behaviors. The Behavioral
Mapping Parametric Knitter (BMPK) juxtaposes key
characteristics of biological design (modularity, robustness,
homeostasis, and adaptation) with smart technologies. The
BMPK Robot is an aggregated system that observes human
behaviors, analyzes this behavioral data, designs parametric
patterns, and then weaves spatial designs. The robot extracts
data about complex human behaviors using intelligent sensors
embedded within the environment. Knowledge extracted from
this behavioral data is then used to design a parametric pattern.
Finally, the robot employs this pattern to determine an optimal
space structure to make the observed human behaviors as easy as
possible. The spatial designs produced by the BMPK Robot are
thus intended to help optimize the dynamic human behaviors
that are already observed within the built environment. The
results from this research project will lead to reduced stress and
improved wayfinding among end-users. In addition, the research
will produce a design tool capable of measuring the performance
of different architectural forms in regard to how well they
facilitate human behavior.
GSTF Journal of Engineering Technology (JET)
2016-08-19 12:05:50
application/pdf
http://dl6.globalstf.org/index.php/jet/article/view/1684
GSTF Journal of Engineering Technology (JET); Vol 4, No 1 (2016): Journal of Engineering Technology (JET)
eng
Copyright (c) 2017 GSTF Journal of Engineering Technology (JET)
oai:ojs.dl6.globalstf.org:article/792
2021-02-04T11:53:57Z
jet:ART
"140829 2014 eng "
dc
Trade Liberalization, Openness, and Economic Growth in Sri Lanka: A Co-Integration Analysis
Silva, Nirodha De
Chidmi, Benaissa
Johnson, Jeff
Trade Liberalization, Trade Openness, Economic Growth, Investment, Free Trade Agreements, Co-integration, Causality, Error Correction Model, Sri Lanka
This study attempted to show the
relationship between trade liberalization and
economic growth in Sri Lanka over the period of
1960-2010. This paper empirically estimated the
causality relationship between trade openness and
economic growth by employing co-integration and
Granger –causality tests. The analysis supports the
long run relationship between trade openness and
economic growth. This study also concluded
investments and Free Trade Agreements are
significant and positively related to the economic
growth and showed that both factors are feasible in
sustaining economic growth in Sri Lanka.
GSTF Journal of Engineering Technology (JET)
2014-08-29 09:03:07
application/pdf
http://dl6.globalstf.org/index.php/jet/article/view/792
GSTF Journal of Engineering Technology (JET); Vol 2, No 2 (2013): Journal of Engineering Technology (JET)
eng
Copyright (c) 2017 GSTF Journal of Engineering Technology (JET)
oai:ojs.dl6.globalstf.org:article/1919
2017-08-19T11:32:09Z
jet:ART
"170819 2017 eng "
dc
Bargaining Mechanism Design of PPP Project Bidding
Zhang, Xianzhe
Fang, Jun
Public Private Partnerships; bargaining; game model
Since the implementation of PPP model, it has been
widely concerned, and many scholars have studied the
bargaining process of PPP project. How to establish an effective
mechanism to protect the interests of both the government and
enterprises, to achieve a balance, has been the concern of
scholars. According to the government and the enterprise PPP
project bidding process in fixed income under the condition of
bargaining problems, establishing game model with incomplete
information, divided into round game, conclude bilateral
consultations process. Finally, under the condition of incomplete
information, the two sides should establish information
disclosure mechanism to ensure their own interests under the
condition of incomplete information.
GSTF Journal of Engineering Technology (JET)
2017-08-19 11:04:55
application/pdf
http://dl6.globalstf.org/index.php/jet/article/view/1919
GSTF Journal of Engineering Technology (JET); Vol 4, No 3 (2017): GSTF Journal of Engineering Technology (JET)
eng
Copyright (c) 2017 GSTF Journal of Engineering Technology (JET)
oai:ojs.dl6.globalstf.org:article/1020
2021-02-04T11:22:51Z
jet:ART
"140701 2014 eng "
dc
Villa Tugendhat as a Technical Monument - Elements of Passive Solar Architecture
Maurerová, L.
Hirš, J.
villa Tugendhat; technical monument; building services; passive solar architecture; BSim; case study
The elements of passive solar architecture are crucial for designing of low-energy and passive houses; moreover it might be surprising that some of the principles of passive solar architecture were applied in the functionalist Villa Tugendhat built in the year 1930, designed by the German architect Ludwig Miese van der Rohe and which belongs to the UNESCO World Heritage List.
This case study attempts to point out the individual elements of solar architecture which were applied in the villa. In order to verify some of the statements/claims a numerical simulation of incident solar radiation (XSun) was performed in the Danish simulation software BSim. The paper includes a list of other timeless technical specifics, especially in terms of HVAC, which were used in the villa, and the authors have written about elsewhere (Villa Tugendhat – An Unique Air-conditioning System in Residential Hall. CLIMA 2013. ISBN 978-80-260-4001-9).
GSTF Journal of Engineering Technology (JET)
2015-01-08 06:18:40
application/pdf
http://dl6.globalstf.org/index.php/jet/article/view/1020
GSTF Journal of Engineering Technology (JET); Vol 3, No 1 (2014): Journal of Engineering Technology (JET)
eng
Copyright (c) 2017 GSTF Journal of Engineering Technology (JET)
oai:ojs.dl6.globalstf.org:article/1562
2016-04-20T06:26:51Z
jet:ART
oai:ojs.dl6.globalstf.org:article/1324
2015-08-28T09:25:11Z
jet:ART
"150828 2015 eng "
dc
Environmental Aspect of Success in Dam Engineering Projects
Amirsayafi, Pouya
dams, environment, fish habitat, reservoirs
The present paper investigates the effects of dams on environment. First, some of definitions have been provided and then the destructive effects are presented by category. Some environmental challenges and solutions will be discussed. Afterwards, the environmental legislation of dams in Australia and some example solutions are presented, and benefits of dams have also been noted, in order to compare them properly. Finally some solutions regarding reducing environmental effects of dams are suggested.
GSTF Journal of Engineering Technology (JET)
2015-08-28 00:00:00
application/pdf
http://dl6.globalstf.org/index.php/jet/article/view/1324
GSTF Journal of Engineering Technology (JET); Vol 3, No 2 (2015): GSTF Journal of Engineering Technology (JET)
eng
Copyright (c) 2017 GSTF Journal of Engineering Technology (JET)
oai:ojs.dl6.globalstf.org:article/783
2014-08-29T08:12:54Z
jet:ART
"140829 2014 eng "
dc
An Innovative Gas Turbine Plant for Parabolic Trough Concentrated Solar Power Plants
Cipollone, Roberto
Cinocca, Andrea
Concentrated Solar Power, Heat transfer fluid, Parabolic-trough, Solar Energy.
Concentrated Solar Power Plants (CSP) technology
using Parabolic Trough (PT) has the capability to give, in the
mean future, a strong contribution to the electrical energy
generation. In the long term, inside a new framework of
relationships concerning energy production, many aspects would
justify a significant contribution to the phase out of fossil sources
use.
The paper concerns about a theoretical modeling aimed at
improving the performances of CSP which approaches the
energy generation from a system point of view. Thanks to it, the
attention is focused on the use of gases as heat transfer fluid
inside the solar receivers.
The success of this concept is related to the possibility to
increase the fluid temperature above the actual maximum values:
this requires the prediction of receiver efficiency, done on a
physically consistent way by the model.
An innovative integration between the solar field and an
original gas turbine power plant modified in order to maximize
thermal energy conversion, is presented.
GSTF Journal of Engineering Technology (JET)
2014-08-29 07:41:33
application/pdf
http://dl6.globalstf.org/index.php/jet/article/view/783
GSTF Journal of Engineering Technology (JET); Vol 2, No 1 (2013): Journal of Engineering Technology (JET)
eng
Copyright (c) 2017 GSTF Journal of Engineering Technology (JET)
oai:ojs.dl6.globalstf.org:article/1557
2016-04-20T06:34:40Z
jet:ART
"160411 2016 eng "
dc
Economic vitality of Polish suburbs
Martyniuk, Olga
Pęczek, Justyna Martyniuk
Pęczek, Grzegorz
suburbanization, Poland, SME sector, transformation, Gdansk Metropolitan Area
Since 1989, Poland has been undergoing major political, social and economic transformations. The effects of these changes are visible on several levels, including the field of urban planning, where they manifested themselves as the birth of the suburbanization process. In the field of economics, it could be noticed that since 1989, the SME sector has been awakening very dynamically. Correlation of the parallel development of these two phenomena has led the authors to pose a question about the emerging potential links between the occurring processes i.e. - the process of the urban sprawl and the development of the SME sector. In this context, a thesis was established about emergence of the so-called "entrepreneurship nests", made up of a dispersed urban tissue with residential functions intermixed and high intensification of economic entrepreneurship, in the Polish suburb areas. To identify the research problem, a two-pronged research in the fields of urban planning and economic research was adopted. The Tricity Metropolitan Area (TMA), consisting of three central cities and 31 towns and adjacent municipalities, was the subject of research. Municipalities with the highest suburbanization rate were established on the basis of the migration balance. Subsequently, business entities in those areas were identified with their business activity measured by the location quotient (LQ). The results of the classification of the units within TMA (cities, town village communities, village communities) according to the migration rate and the construction activity index indicated 7 communities with the highest intensity of the suburbanization process. Our analysis of LQ in all units within TMA (cities, town village community, village communities) and its core cities allowed identification of the communities with the highest SME activity. Additionally, based on statistical data of selected suburban areas, 2 municipalities (Chwaszczyno, Straszyn) with the highest entrepreneur potential were found, which we refer to as the nests of entrepreneurship. Our study confirms that communes characterized by the highest intensity of the suburbanization processes present higher business activity than other communes. However, this is just preliminary study, which offers incomplete explanation of the suburbanization process in a metropolitan area in Poland and will be further developed, using the CATI method, in additional studies. The article is part of the project UMO-2013/09/B/HS4/01175 financed by The National Science Centre in Poland.
GSTF Journal of Engineering Technology (JET)
2016-04-11 02:59:04
application/pdf
http://dl6.globalstf.org/index.php/jet/article/view/1557
GSTF Journal of Engineering Technology (JET); Vol 3, No 4 (2016): Journal on Engineering Technology (JET)
eng
Copyright (c) 2017 GSTF Journal of Engineering Technology (JET)
oai:ojs.dl6.globalstf.org:article/778
2014-08-29T08:12:55Z
jet:ART
"140829 2014 eng "
dc
A Cultural Heritage, Environmental Preservation Master Plan: Post- Occupancy Evaluation of Emporion Park Design
Saura, Magda
Post-occupancy, park design; longitudinal studies for architecture; environmental design for archaeological sites; World Olympic Games planning.
In spite of market pragmatics, the urban,
architectural and environmental protection and conservation
ideas of the Emporion master plan were quickly implemented in
actual planning. Previous research conducted at Technical
University of Catalonia set the design requirements for policymaking
required in any sort of master plan. One of the goals was
to predict a successful use of space through natural environments
and historic landscapes. Social and cultural factors determined
one set of parameters for environmental programming and
evaluation; namely, how people use both recreational and tourist
infrastructure through historic places. The Getty Grant Program
sponsored university research. University research today
develops further through a longitudinal study that started once
the plan was executed and partly built in 1992.
GSTF Journal of Engineering Technology (JET)
2014-08-29 07:41:33
application/pdf
http://dl6.globalstf.org/index.php/jet/article/view/778
GSTF Journal of Engineering Technology (JET); Vol 2, No 1 (2013): Journal of Engineering Technology (JET)
eng
Copyright (c) 2017 GSTF Journal of Engineering Technology (JET)
oai:ojs.dl6.globalstf.org:article/1813
2017-03-25T01:28:14Z
jet:ART
"170324 2017 eng "
dc
Interactions of Actors’ Interests and Power in The Governance System The Case of Co-location of University Campuses in Trondheim, Norway
Gohari, Savis
NTNU Trondheim
NTNU; campus development; co-location; actors; governance; power
This paper aims to understand the power and governance questions in the case of co-location of university (NTNU) campuses in the city of Trondheim. NTNU has three main campuses; 1. Gløshaugen, the technical campus, 2. Dragvoll, the social and human science campus, and 3. Øya, the hospital and medical campus. Since NTNU was built, the co-location of its campuses was on the agenda in order to increase the interdisciplinary and collaboration between them. In 2000s, the desire of co-locating the campuses was reinforced by the new trend of knowledge-based urban development in Trondheim. A large part of the higher education and research institutions, including Gløshaugen and Øya campuses, has been located in the area close to Trondheim city center. The vicinity of these institutions embarks on a strategic mission to firmly encourage and nurture locally focused innovation, science and creativity within the context of expanding knowledge economy. Subsequently, the municipality’s wish is to physically and institutionally combine the functions of a science park with civic and residential functions by opening up campus areas for the outside world, integrating university activities with the rest of the city. Regarding the co-location of campuses, a political mainstream is to move (re-locate) both administration and education affairs of NTNU’s Dragvoll campus to the Gløshaugen- Øya area (distance of 5 km). This process of moving is an intricate evolution that brings different social, economic and ecological issues into question that has provided an implicit testimony to the broad range of political interests and power issues. The latent conflict between different interests and power levels have permeated multi-stakeholder discussions at the national and local level and undermined the process of decision-making for nearly 15 years. The process of decision-making has continuously been influenced by the power of actors in terms of their position, personality and opportunity they grasp for actions. The findings of this research attract attentions to the importance of networking with individuals, who have the necessary power and interest, in order to understand the governance structure and the mechanism for its change in the specific period of time.
GSTF Journal of Engineering Technology (JET)
2017-03-24 07:54:58
application/pdf
http://dl6.globalstf.org/index.php/jet/article/view/1813
GSTF Journal of Engineering Technology (JET); Vol 4, No 2 (2017): Journal of Engineering Technology (JET)
eng
Copyright (c) 2017 GSTF Journal of Engineering Technology (JET)
oai:ojs.dl6.globalstf.org:article/1011
2021-02-04T11:17:48Z
jet:ART
"140701 2014 eng "
dc
The modelling and analysis of the temperature in current guages and contact system
Kolimas, Łukasz
current guages, contact system, electric apparatus
Contact assemblies of electric apparatuses belong to the most burdened elements of current circuits. They should be designed, made and exploited in order to acceptable restrictions to their technical parameters, resulting from adequate rules and standards, weren't crossed.
GSTF Journal of Engineering Technology (JET)
2015-01-08 06:18:40
application/pdf
http://dl6.globalstf.org/index.php/jet/article/view/1011
GSTF Journal of Engineering Technology (JET); Vol 3, No 1 (2014): Journal of Engineering Technology (JET)
eng
Copyright (c) 2017 GSTF Journal of Engineering Technology (JET)
oai:ojs.dl6.globalstf.org:article/1957
2020-01-28T04:06:39Z
jet:ART
"200128 2020 eng "
dc
Impact of ITS in estimation of traffic congestion level of an urban corridor
Jain, Sourabh
Congestion; Delay; Origin and Destination; Traffic; Travel Time
This study attempts to make use of traffic behaviour on the aggregate level to estimate congestion on urban arterial and sub-arterial roads of a city exhibiting heterogeneous traffic conditions by breaking the route into independent segments and approximating the origin-destination based traffic flow behaviour of the segments. The expected travel time in making a trip is modelled against sectional traffic characteristics (flow and speed) at origin and destination points of road segments, and roadway and segment traffic characteristics such as diversion routes are also tried in accounting for travel time. Predicted travel time is then used along with free flow time to determine the state of congestion on the segments using a congestion index (CI). A development of this kind may help in understanding traffic and congestion behaviour practically using easily accessible inputs, limited only to the nodes, and help in improving road network planning and management.
GSTF Journal of Engineering Technology (JET)
2020-01-26 17:14:06
application/pdf
http://dl6.globalstf.org/index.php/jet/article/view/1957
GSTF Journal of Engineering Technology (JET); Vol 5, No 1 (2018): Journal of Engineering Technology (JET)
eng
Copyright (c) 2020 GSTF Journal of Engineering Technology (JET)
oai:ojs.dl6.globalstf.org:article/1130
2021-02-04T11:43:44Z
jet:ART
"131201 2013 eng "
dc
Analog Mars Rover Service as a Robotic Hardware and Team Building Platform
Meszyński, Sebastian
Józefowicz, Mateusz
ABM SPACE EDUCATION, Mars Analog Rover, EXOMARS, MAGMA WHITE
Magma White is an analog Mars rover platform created by ABM SE and offered to the developers of scientific equipment built for space exploration missions, who want to test their devices at low- and mid- Technology Readiness Levels in demanding conditions of desert, Alpine and polar regions or artificial environments. The rover offers a remote access to the payload through the Magma White mission control system. The paper summarizes the background of the analog solution. It covers universal interfacing setup and issues related to the team and technological partners, who supply elements of the payloads. Two analog missions provide a case study: Dachstein 2012, when “WISDOM” ground penetrating radar for Exomars was tested onboard Magma White, and Morocco 2013, with “L.I.F.E.” payload and complete remote access from Europe.
GSTF Journal of Engineering Technology (JET)
2015-04-30 09:22:48
application/pdf
http://dl6.globalstf.org/index.php/jet/article/view/1130
GSTF Journal of Engineering Technology (JET); Vol 2, No 3 (2013): Journal of Engineering Technology (JET)
eng
Copyright (c) 2017 GSTF Journal of Engineering Technology (JET)
oai:ojs.dl6.globalstf.org:article/740
2014-08-29T03:43:48Z
jet:ART
"140829 2014 eng "
dc
Fabrication of Ni coatings by Mechanical Coating Technique
Hao, Liang
., Yun Lu
Sato, Hiromasa
Yoshida, Hiroyuki
Ceramic, composite material, mechanical coating, Ni coating.
In this work, Ni coatings were fabricated by mechanical coating technique (MCT). The coatings were characterized by X-ray diffraction (XRD), and scanning electron microscopy (SEM), among others. The formation process of Ni coatings was examined. The results revealed that the formation of the coatings consist of the adhesion of Ni to ceramic balls and the cold-welding between Ni particles. Besides, the effect of some influencing factors on the formation of the coatings was also investigated. The results proved that higher rotation speed was favor of the coating formation. The substrate material and its surface condition also had great influence on the coating formation.
GSTF Journal of Engineering Technology (JET)
2014-08-29 03:31:25
application/pdf
http://dl6.globalstf.org/index.php/jet/article/view/740
GSTF Journal of Engineering Technology (JET); Vol 1, No 1 (2012): Journal of Engineering Technology (JET)
eng
Copyright (c) 2017 GSTF Journal of Engineering Technology (JET)
oai:ojs.dl6.globalstf.org:article/1490
2015-12-04T02:41:19Z
jet:ART
"151204 2015 eng "
dc
Delay Factors between Main Contractors and Nominated Subcontractors in High Rise Buildings in Thailand
Suksai, Sunan
Moungnoi, Wuttipong
Charoenpornpattana, Santi
Homthong, Samart
delays, main contractors, nominated sub-contractor, high rise building
This research is a study of factors affecting the delay of the construction period by working together during construction between main contractors and nominated sub-contractors in high rise building at Bangkok and vicinity. The focus of factors which cause delays to the structural works, architectural work, electrical - mechanical works and sanitation work in General Contract (Dominated –Sub-contract) and Nominated Sub-contract. This study used questionnaires and interviews as tool for collecting data. Data analysis methods to compare average frequency in order to know the factors that make each type of construction delays and statistical methods Independent-Sample t-test to find out the critical factors to the construction both of the contrast delay. The results showed that factors which cause delays affecting the construction period consisted of not working together as team-work, project management experience is not enough and be deficient in skill of communicate and coordinate. It also found that the delay factor of five critical factors that make construction in terms of structure, architecture, electrical-mechanical and sanitation was always delayed. Factors include delays resulting from not working together as team work, period of plan laid down, delayed delivery area, delays in approval and construction item and shortage of skilled labor, or labor shortages during the season so aware of critical factors that delay the construction above. And find ways to prevent construction delays caused by these factors.
GSTF Journal of Engineering Technology (JET)
2015-12-04 02:09:17
application/pdf
http://dl6.globalstf.org/index.php/jet/article/view/1490
GSTF Journal of Engineering Technology (JET); Vol 3, No 3 (2015): Journal of Engineering Technology (JET)
eng
Copyright (c) 2017 GSTF Journal of Engineering Technology (JET)
oai:ojs.dl6.globalstf.org:article/773
2014-08-29T08:12:54Z
jet:ART
"140829 2014 eng "
dc
Option Values and Penalty Fees in Concession Contracts: a Real Option Approach
., D’Alpaos C
., Moretto M.
concession contracts, option value to delay, penalty fees
Concession contracts are agreements granting
the right to construct public works, operate and provide a
service or a good.
Although most contracts include penalties for delays,
evidence from ongoing concession contracts shows that time
overruns are widespread. Uncertainty over future payoffs
generates investment timing flexibility that, if optimally
exercised, can increase the contract value for the contractor
firm. Therefore concessionaires may find it optimal to delay
irreversible investments regardless the presence of penalty
clauses. This investment timing flexibility should be taken
into account when determining the penalty fees. Following
the Real Option Approach we model the concessionaire’s
optimal investment strategy and determine the optimal
penalty fee that induces the concessionaire to comply with
contract provisions on time. The higher the concessionaire’s
option value to delay, the higher the optimal penalty to be
set.
GSTF Journal of Engineering Technology (JET)
2014-08-29 07:41:33
application/pdf
http://dl6.globalstf.org/index.php/jet/article/view/773
GSTF Journal of Engineering Technology (JET); Vol 2, No 1 (2013): Journal of Engineering Technology (JET)
eng
Copyright (c) 2017 GSTF Journal of Engineering Technology (JET)
oai:ojs.dl6.globalstf.org:article/1699
2016-08-19T12:34:27Z
jet:ART
"160819 2016 eng "
dc
Optimation of Electrical Energy Generation for Low Rise Office Building with Folding- BIPV Concept
Susan, Susan
Ciputra University
BIPV, electrical energy generation, environmental shading, folding architecture, uniformity percentage.
BIPV is an architectural concept that
related to energy contribution. The system has
functions of producing electricity as well as building
form giver. The effectivity of BIPV depends on solar
radiation received. Meanwhile, the solar radiation
received depends on numbers of solar receiving area
and environmental shading. Environmental shading
will decrease the effectivity of BIPV. But, integrated
configuration of folding-BIPV is expected to create
more numbers of solar receiving area. The integrated
configuration of folding-BIPV will create optimum
BIPV, both in electrical generation and building form
giver. Experiment to low rise office building in
tropical climate is done by giving folding treatment.
The experiment also considers about environmental
shading. Evaluation is done by analyzing and
optimizing the numbers and uniformity of solar
radiation received. Simulation with ARCHIPAK 5.1 is
used as experimental research tool. The simulation is
used to calculate annual radiation received (kWh/m²)
from folding-BIPV configuration. Manual calculation
is used to calculate total annual radiation received
(kWh) and uniformity percentage. Gradient diagram
is used to do the optimation. Result of this research is
an optimation of electrical energy generation in low
rise office building which use folding-BIPV concept
GSTF Journal of Engineering Technology (JET)
2016-08-19 12:05:50
application/pdf
http://dl6.globalstf.org/index.php/jet/article/view/1699
GSTF Journal of Engineering Technology (JET); Vol 4, No 1 (2016): Journal of Engineering Technology (JET)
eng
Copyright (c) 2017 GSTF Journal of Engineering Technology (JET)
oai:ojs.dl6.globalstf.org:article/882
2021-02-04T11:27:56Z
jet:ART
"140903 2014 eng "
dc
Heavy Metals Removal Using Natural Jordanian Volcanic Tuff
A. Radaideh, Jamal.
Barjenbruch, Prof. Matthias
Patzer, Stephanie
Shatnawi, Ziad
Natural volcanic tuff, heavy metals, sorption, ion exchange, water, wastewater, Jordan.
The removal performance and the selectivity sequence of separate metal ions (Fe2+, Cr3+, Cu2+, Zn2+ and Ni2+) in aqueous solution were studied by adsorption process on untreated and natural volcanic tuff. A series of experiments were conducted in batch-wise and fixed-bed columns to investigate the removal efficiency of natural Jordanian volcanic tuff as low cost and an effective adsorbent for heavy metal ions and to examine its economical application in water purification and treatment practices.
Water and wastewater samples containing metal ions with concentrations ranging from 1 to 15 mg/L were used. The plexi glas columns were filled with natural occurring volcanic tuff particles ranging between (0.350 – 3.000) mm. Photometric methods were used for laboratory analysis of samples.
The experiments were carried out under changing conditions as a function of different pH-values (2,4,6 and 7), initial solute concentrations (1, 5, 10, 15) mg/L, and different room temperatures (20, 25 and 30 Cº ), and varying tuff particle sizes (0.35 -3.0) mm. The breakthrough curves were derived by plotting the normalized effluent metal concentrations (C/C0) versus bed volume.
Obtained results showed that natural Jordanian volcanic tuff has an adsorption capacity of 0.417 mg/g for Fe 2+ and 0.151mg/g for C 2+. Factors in the reaction medium such as pH and ionic strength influenced the adsorption process. The quantity of particular ionic species (Cu2+, Pb2+, Cr2+ ,Fe2+, Zn2+) bound in dependence on the initial concentrations, indicates that the removal efficiency from the liquid phase follows the sequence Fe2+>Cu2+>Pb2+> Cr2+>Zn2+ when keeping the pH at 4 and follows the sequence Cu2+>Zi2+>Fe2+>Cr2+>Pb2+ when keeping the pH at 6. Equilibrium modeling of the removal showed that the adsorption of the metal cations Cr2+, Pb2+, Zn2+ , Cu2+ and Fe2+ were fitted to one of the adsorption isotherms.
GSTF Journal of Engineering Technology (JET)
2014-09-03 10:12:43
application/pdf
http://dl6.globalstf.org/index.php/jet/article/view/882
GSTF Journal of Engineering Technology (JET); Vol 2, No 4 (2014): Journal of Engineering Technology (JET)
eng
Copyright (c) 2017 GSTF Journal of Engineering Technology (JET)
oai:ojs.dl6.globalstf.org:article/1935
2017-08-19T11:32:09Z
jet:ART
"170819 2017 eng "
dc
Properties of High-Energy Ball-Milled and Hot Pressed Nanocrystalline Tantalum
Jakubowicz, Jaroslaw
Sopata, Mateusz
Adamek, Grzegorz
Koper, Jeremiasz
tantalum; nanomaterials; high energy ball milling; hot pressing; structure; microstructure; properties
The paper describes the process of high-energy ball
milling of tantalum microcrystalline particles aiming at achieving
a nanocrystalline material. During intense milling, a reduction of
the crystallite size occurs, which is the consequence of strong
plastic deformation, the introduction of dislocations and the
formation of subgrains. Due to the plastic nature of the powders,
the particle size increases at the initial stage of milling, where
cold welding and plastic deformation of the particles takes place.
Due to the strain hardening, however, the particles crush into
smaller ones. The nanocrystalline powders were hot pressed. The
bulk hot pressed nanocrystalline tantalum have hardness as high
as 1067 HV and useful corrosion resistance in chloride
electrolyte.
GSTF Journal of Engineering Technology (JET)
2017-08-19 11:04:55
application/pdf
http://dl6.globalstf.org/index.php/jet/article/view/1935
GSTF Journal of Engineering Technology (JET); Vol 4, No 3 (2017): GSTF Journal of Engineering Technology (JET)
eng
Copyright (c) 2017 GSTF Journal of Engineering Technology (JET)
oai:ojs.dl6.globalstf.org:article/729
2014-08-29T03:38:24Z
jet:ART
"140829 2014 eng "
dc
Low-Carbon Economy: Value Paradigm Turn﹠Value Orientation?
., GuiHong Cao
Low-carbon economy, meets the development needs of ecological civilization, as C development model to prompt economic growth and protect ecological balance, following with original civilization, agriculture civilization, industrial civilization. From the perspective of multi-values, its development goal reflects the dialectical unity between human and nature, its development reason embodies the dialectical unity between intergenerational equity and intragenerational equity, its development path mirrors the dialectical unity between material pursuit and spiritual seeking, its development idea expresses the dialectical unity between moral evaluation and utilitarian assessment. Based upon the value paradigm turn, low-carbon economy theory extends the scope of moral concern and realizes the unity between natural philosophy and moral philosophy. It emphasizes the harmonious unity between natural system and social system, therefore achieving the pursuit of ecological holism value. It underlines the co-evolution and harmonious balance between human and nature, as a sustainable development idea. Its development motivation delivers the pursuit on society-orient value, its inherent nature shows the value orientation of ecological economy sustainable development, its development philosophy conveys the value gist to promote ecological civilization, and its ultimate target indicates the value appeal for the harmony and unity among economic growth, social development and environmental protection.
Keywords-low-carbon economy; paradigm turn; value orientation;
C model; economic growth
GSTF Journal of Engineering Technology (JET)
2014-08-29 03:31:25
application/pdf
http://dl6.globalstf.org/index.php/jet/article/view/729
GSTF Journal of Engineering Technology (JET); Vol 1, No 1 (2012): Journal of Engineering Technology (JET)
eng
Copyright (c) 2017 GSTF Journal of Engineering Technology (JET)
oai:ojs.dl6.globalstf.org:article/1477
2015-12-04T02:41:19Z
jet:ART
"151204 2015 eng "
dc
Concrete with Recycled Aggregate: Evaluation of Mechanical Properties
Yehia, Sherif
Farrag, Sharef
Abu-Sharkh, Anaam
Zaher, Amani
Istaitiyeh, Heba
Helal, Kareem
component; Recycled aggregate, concrete properties, physical properties, mechanical properties
This paper discusses the suitability of producing concrete with 100% recycled aggregate to meet durability and strength requirements for different applications. Aggregate strength, gradation, absorption, specific gravity, shape, and texture are some of the physical and mechanical characteristics that contribute to the strength and durability of concrete. In general, quality of the recycled aggregate depends on the loading and environmental conditions that the demolished structures were exposed to. Therefore, the experimental program consisted of two tasks. The first task was focused on the evaluation of physical and mechanical properties of the recycled aggregate over 6 months to determine variability in aggregate properties. The second task was directed towards evaluation of concrete portieres produced with fine and coarse recycled aggregate. Several concrete mixes were prepared with combinations of different aggregate grades and the results were compared to that of a control mix. Workability and compressive strength were performed to assess the suitability of these mixes for different applications.
GSTF Journal of Engineering Technology (JET)
2015-12-04 02:09:17
application/pdf
http://dl6.globalstf.org/index.php/jet/article/view/1477
GSTF Journal of Engineering Technology (JET); Vol 3, No 3 (2015): Journal of Engineering Technology (JET)
eng
Copyright (c) 2017 GSTF Journal of Engineering Technology (JET)
oai:ojs.dl6.globalstf.org:article/764
2014-08-29T08:12:54Z
jet:ART
"140829 2014 eng "
dc
The Rain Drop Impact on the Water Discharge and Sediment Transport under the Full-Scale Test
Hussain Shah, Syed Muzzamil
Yusof, Khamaruzaman Wan
Mustaffa, Zahiraniza
Hashim, Ahmad Mustafa
Bare soil, Grass cover, Soil detachment, Volume rate of water flow
The magnitude of soil erosion by water remains
high in the tropical regions. The construction activities further
worsen this process which leads to the undesirable effects. The
newly constructed highway embankments usually remain bare
and are considered to be the prime agent of soil loss. The soil
surface with an appropriate cover helps restricting the soil
detachment for which many agronomic soil conservation
practices have been used. This paper integrates that why a simple
grass cover has been recommended to cope with this inevitable
issue. It further assimilates the results obtained from a full scale
test conducted in the Perak State Malaysia under the simulated
rainfall condition of 40 mm/hour (average rainfall event) for
which the rainfall data was obtained from the Meteorological
department Perak State, Malaysia from the year (2005-2011).
The volume rate of water flow and sediment transport was
observed at different time intervals for three plots i.e. (Plot-I) the
fully grass covered surface, (Plot-II) the bare soil surface, and
(Plot-III) 50% of the grass covered surface with an area of 2
meters by 6 meters having a slope angle of 30°. The results
obtained showed maximum water discharge and soil loss for
(Plot-II) the bare soil surface, which was found to be 5.78 x 10-5
m3 sec-1 and 500.9 g m-2 respectively.
GSTF Journal of Engineering Technology (JET)
2014-08-29 07:41:33
application/pdf
http://dl6.globalstf.org/index.php/jet/article/view/764
GSTF Journal of Engineering Technology (JET); Vol 2, No 1 (2013): Journal of Engineering Technology (JET)
eng
Copyright (c) 2017 GSTF Journal of Engineering Technology (JET)
oai:ojs.dl6.globalstf.org:article/1689
2016-08-19T12:34:27Z
jet:ART
"160819 2016 eng "
dc
Approaching the issues of Urban Waterstreams Organization as a New City Landscape: Focused on Case Studies in Seoul, South Korea
Shafray, Ekaterina
Architecture Department, Korea University, Seoul, South Korea
Kim, Seiyong
Architecture Department, Korea University, Seoul, South Korea
Seoul Water Streams; case study; hybrid landscape; community maintenance & revitalizing projects
Nowadays many cities set priorities to shift from
automobile-centered towards more bicycle and pedestrianoriented
planning directions followed by high-cost infrastructure
change projects. Open spaces (recommended to be 15-20% of city
land) have greater importance for social interaction and
relaxation especially for middle-income communities. Seoul has a
historical network of Cheonggyecheon water stream and its
tributaries. The transport traffic is linked it and with pedestrian
and cyclist circulation along natural and artificial lines. This
paper considers different conditions of existing urban pathways
in Seoul through the case studies: Chyonggyecheon as a largest
water stream restoration project in a city; Seongbukcheon water
stream as a linear open space for local residents;
Jeongreungcheon under the Naebu expressway as a hybrid
landscape. This paper aims to correlate the issues of existing
water streams condition, local neighborhood condition (land
value change), and community planning. Cost-effective
revitalizing of high-dense downtown areas is a challenge for a city
that incorporates multifunctional urban environment of hybrid
landscapes and community planning.
GSTF Journal of Engineering Technology (JET)
2016-08-19 12:05:50
application/pdf
http://dl6.globalstf.org/index.php/jet/article/view/1689
GSTF Journal of Engineering Technology (JET); Vol 4, No 1 (2016): Journal of Engineering Technology (JET)
eng
Copyright (c) 2017 GSTF Journal of Engineering Technology (JET)
oai:ojs.dl6.globalstf.org:article/798
2021-02-04T11:56:42Z
jet:ART
"140829 2014 eng "
dc
Strengthening Techniques & Failure Modes of RC Beam Strengthened Using Fibre Reinforced Polymer. A Review
Imran, Muhammad
Shafiq, Nasir
Akbar, Ibrisam
Crack, Flexure, FRP, Reinforced Concrete Beam, Strengthening, Shear, Torsion.
strengthening of reinforced concrete (RC) beam
using Fibre Reinforced Polymer (FRP) revealed as the most
efficient material due to its various mechanical properties. The
previous experimental studies conducted to discuss
strengthening schemes for RC beam, based on the observed crack
pattern and failure mechanism for strengthening RC beam. The
development of crack formation on RC beams under loading
identifies the mode of failure and strengthening scheme required,
such as to increase the flexural capacity of RC beam; FRP is
applied at the tension zone. Similarly, for shear and torsion
strengthening FRP wraps are being applied at the faces of the
beam. The studies have shown the high strength in shear and
torsion is achieved by applying U-shape wrap. Full warp gives
high strength in torsion strengthening but practically the
application of full wrap on RC beam is impossible and required
more in-depth study to propose practical solutions. However, the
combined effects of flexure, shear and torsion have not been
discussed yet. Therefore, the strengthening schemes from
literature are combined to propose new strengthening scheme for
RC beam under combine the action of flexure, shear and torsion.
However, experimental data are required to validate the
proposed scheme.
GSTF Journal of Engineering Technology (JET)
2014-08-29 09:03:07
application/pdf
http://dl6.globalstf.org/index.php/jet/article/view/798
GSTF Journal of Engineering Technology (JET); Vol 2, No 2 (2013): Journal of Engineering Technology (JET)
eng
Copyright (c) 2017 GSTF Journal of Engineering Technology (JET)
oai:ojs.dl6.globalstf.org:article/1926
2017-08-19T11:32:09Z
jet:ART
"170819 2017 eng "
dc
An Empirical Findings of the Carbon Footprint of Erbil City Residences
Hassoon ALDelfi, Hassan
Alkabbanie, Rasha
ecology, energy information; electricity; water; consumption; sustainability; residential houses; heating; transportation; food sources; life style; Cooling; ecology carbon; footprint; Carbon Dioxide, cooking, residences, mobility
Erbil is the capital city of Kurdistan Province which
has experienced recently an expansive urban development and
sudden population growth due to the mass movement of the
displaced people from the nearby troubled zones and rural
emigration. In this paper, A face to face data were collected for 72
questions, informative results have been tabulated in charts and
tables. The acquired results were reached to depict the energy
usage, the recycling, monthly expenditures, transportations, food,
electricity and water consumptions, energy for cooking, allocated
landscape, heating sources, lighting and their responses to
alternative energy usage. Different models for measuring
sustainability have been adopted to measure the degree of
sustainability in terms of CO2 emission, and carbon footprint for
many residences. An overall measured carbon footprint for Erbil
city is almost double the world average and of Iraq. On the other
hand, the CO2 emission is almost double of Iraq and the world.
The contributions of items that led to this increase are categorized
in tables and charts. Those results can be used as guide lines for
limiting the lifestyles in Erbil city. Conclusive remarks and future
suggestions have been drawn accordingly to achieve sustainable
guidelines to be implemented in future by the local authorities and
planners.
GSTF Journal of Engineering Technology (JET)
2017-08-19 11:04:55
application/pdf
http://dl6.globalstf.org/index.php/jet/article/view/1926
GSTF Journal of Engineering Technology (JET); Vol 4, No 3 (2017): GSTF Journal of Engineering Technology (JET)
eng
Copyright (c) 2017 GSTF Journal of Engineering Technology (JET)
oai:ojs.dl6.globalstf.org:article/1025
2021-02-04T11:24:02Z
jet:ART
"140701 2014 eng "
dc
Multi-objective Model on Connection Time Optimization in Sea-rail Intermodal Transport
Zhang, Qi
Yang, Hao
Zhang, Li
Connection time, Inland-port-transferring Railway Hub Container Transport System, multi-objective optimal model, responding transport, sea-rail intermodal transport
Container sea-rail intermodal transport operation needs to consider some special demands both in volume and time connection. That means container sea-rail intermodal transport is a type of demand responsive transport between railroad trains and marine ships, vice versa. It needs to operate container trains according to the demands of ships in OD, volume, as well as the arrival and departure time. Basing on this responsive demand characteristic of sea-rail intermodal transport, the paper establishes a multi-objective optimal model for its connection time, aiming for maximizing the profits of carriers and minimizing the total transport costs of shippers, as well as minimizing the connection time between container trains and ships to optimizing the intermodal transport system. Modified genetic algorithm is adopted. The calculation results demonstrate that the model could be used to solve the connection problem of container sea-rail intermodal transport involved with volume and time connections.
GSTF Journal of Engineering Technology (JET)
2015-01-08 06:18:40
application/pdf
http://dl6.globalstf.org/index.php/jet/article/view/1025
GSTF Journal of Engineering Technology (JET); Vol 3, No 1 (2014): Journal of Engineering Technology (JET)
eng
Copyright (c) 2017 GSTF Journal of Engineering Technology (JET)
oai:ojs.dl6.globalstf.org:article/716
2014-08-29T03:32:53Z
jet:ART
"140829 2014 eng "
dc
Endurance Electric Vehicle Design and Development Considerations
., Brant Price
density, faliure modes, safety, EV design considerations I.
This paper provides a preliminary battery assessment mechanism to address the hypothetical ECO-America EV Challenge. Several battery parameters are discussed in relation to pack needs, in addition to vehicle and environmental considerations. An evaluation method is provided, with a vision based on success and a metric for battery evaluation for the ECO-America Challenge. Five in-house testing procedures are also provided to ensure battery pack conformance and functionality. Finally, five scenarios are discussed that would cause the current evaluation method and metric to be revised.
GSTF Journal of Engineering Technology (JET)
2014-08-29 03:31:25
application/pdf
http://dl6.globalstf.org/index.php/jet/article/view/716
GSTF Journal of Engineering Technology (JET); Vol 1, No 1 (2012): Journal of Engineering Technology (JET)
eng
Copyright (c) 2017 GSTF Journal of Engineering Technology (JET)
oai:ojs.dl6.globalstf.org:article/1329
2015-08-28T09:25:11Z
jet:ART
"150828 2015 eng "
dc
Technical Engineering for Catalytic Reduction of Nitrous Oxide Emissions
Stefanova, Maya
Chuturkova, Rozalina
greenhouse gas; catalytic reduction; nitrous oxide emissions; secondary catalyst layer
Production of nitric acid is the major emission source of the greenhouse gas nitrous oxide N2O. High temperature catalytic decomposition of N2O by installing a secondary catalyst has been applied at a nitric acid plant in Devnya, Bulgaria. A reconstruction of the ammonia burning reactors was done in august 2012 in order to increase the thickness of the secondary catalyst layer from 28 mm to 60 mm. Nitrous oxide concentration has been monitored for 5 year period – from 2010 to 2014. Monitoring results indicate that the effectiveness of N2O catalytic decomposition depends on the thickness of the secondary catalyst layer - increasing the layer thickness twice leads to over 60 % reduction of the maximum registered and annual average concentrations of N2O. Increasing the thickness of the secondary catalyst layer enhances the effectiveness of high temperature N2O decomposition, which is essential for the parties to the United Nations framework convention on climate change and the Kyoto protocol regarding the fulfillment of their quantitative commitments for greenhouse gas emission reduction.
GSTF Journal of Engineering Technology (JET)
2015-08-28 00:00:00
application/pdf
http://dl6.globalstf.org/index.php/jet/article/view/1329
GSTF Journal of Engineering Technology (JET); Vol 3, No 2 (2015): GSTF Journal of Engineering Technology (JET)
eng
Copyright (c) 2017 GSTF Journal of Engineering Technology (JET)
oai:ojs.dl6.globalstf.org:article/755
2014-08-29T08:12:54Z
jet:ART
"140829 2014 eng "
dc
Legal Regulation on Cosmic Radiation Protection in Aviation - The Case of Serbia
Tomić-Petrović, Ass. Prof. Nataša
cosmic radiation; legal regulation; protection;
Legal regulation first of all has the effect on
decrease in harmful effects of cosmic radiation by
limiting the time spent in flying for air crew, while the
special protection from this type of radiation for
passengers is mainly not predicted. It seems that the
number of regulations dealing with cosmic radiation
protection is not small. However, the cosmic radiation
issue has rarely been considered and is relatively
unknown to the general public even though the impacts
of this radiation are more than significant, which is
confirmed by past research in this area. (Abstract)
GSTF Journal of Engineering Technology (JET)
2014-08-29 07:41:33
application/pdf
http://dl6.globalstf.org/index.php/jet/article/view/755
GSTF Journal of Engineering Technology (JET); Vol 2, No 1 (2013): Journal of Engineering Technology (JET)
eng
Copyright (c) 2017 GSTF Journal of Engineering Technology (JET)
oai:ojs.dl6.globalstf.org:article/1563
2016-04-20T06:34:40Z
jet:ART
"160411 2016 eng "
dc
IOT enabled Futurus Smart Campus with effective E-Learning : i-Campus
Veeramanickam, M.R.M.
Mohanapriya, Dr. M.
Internet of things, Smart Campus, E-learning
New technology like IoT in recent years rapidly developing in a computing world. In digital era our College campus need of IoT technology for classy environment to utilize effective E-learning. Our traditional normal college campus lacks in utilization of any modern technology for e-learning activities in academic course of action. This article focuses on need of adopting IoT technology in campus using E-learning for academics. In near future drastically make changes for students in highly enabled IoT: i-Campus environments.
GSTF Journal of Engineering Technology (JET)
2016-04-11 02:59:04
application/pdf
http://dl6.globalstf.org/index.php/jet/article/view/1563
GSTF Journal of Engineering Technology (JET); Vol 3, No 4 (2016): Journal on Engineering Technology (JET)
eng
Copyright (c) 2017 GSTF Journal of Engineering Technology (JET)
oai:ojs.dl6.globalstf.org:article/788
2021-02-04T11:53:11Z
jet:ART
"140829 2014 eng "
dc
Jatio Sangsad Bhaban Complex: The Emergence of Neocolonial Capitalist Planning in Dhaka as a Sequel
Choudhury, Bayezid Ismail
Armstrong, Dr. Peter
Jones, Dr. Paul
Jatio Sangsad Bhaban, Dhaka, Urban Planning, Louis I kahn.
Jatio Sangsad Bhaban (JSB), the National
Assembly Complex in Bangladesh (Former East
Pakistan) envisioned in 1962, followed by the 1959
Minoprio, Master plan initiated the new phase of
modern space creation in the landscape of Dhaka.
Dhaka, the capital of Bangladesh, grew towards north
from the bank of Buriganga river went through a series
of transformation over 400 years. The locally controlled
growth of old Dhaka during the 17th to 18thth century
under the rubrics of mostly indigenous settlement,
morphed into British colonial and Geddes Dhaka
during the 19th 20th century, culminating into the
emergence of JSB Complex Dhaka in a neocolonial
Capitalist driven world order in the early sixties during
cold war era. The 3 layers of city segment can be seen as
an outcome of the changing political setting from local
to European (British) colonial and finally under US
governed global political order. This paper will try to
connect the 3 stages of spatial transformation with the
element of shifting power and resource control in line
with the theoretical framework by Kim Dovey which
states that space creation in a city is articulated and
constructed by the power structure through the control
of resources and economic influence.
GSTF Journal of Engineering Technology (JET)
2014-08-29 09:03:07
application/pdf
http://dl6.globalstf.org/index.php/jet/article/view/788
GSTF Journal of Engineering Technology (JET); Vol 2, No 2 (2013): Journal of Engineering Technology (JET)
eng
Copyright (c) 2017 GSTF Journal of Engineering Technology (JET)
oai:ojs.dl6.globalstf.org:article/1824
2017-03-25T01:28:14Z
jet:ART
"170324 2017 eng "
dc
Evaluation of Rice Husks Stabilized Burnt and Unburnt Blocks: Affordable Housing
Onyango, Mbakisya
The University of Tennessee at Chattanooga
Katambara, Zacharia
Mbeya University of Science and Technology
Mnkeni, Joseph
Mbeya University of Science and Technology
Nassibu, Shamsa
Mbeya University of Science and Technology
Ligwanda, Mwajuma I.
Mbeya University of Science and Technology
Mwakimi, Fadhili
Mbeya University of Science and Technology
Rice husks blocks; natural soil blocks; burnt blocks; unburnt blocks; compressive and flexural strength.
Low-income families in developing countries
including Tanzania experience challenges on owning better
houses appropriately constructed from locally available
materials. Houses are either of low standard or low-quality
materials. This project examined the use of rice husks, as
agricultural wastes substance, in burnt and unburnt blocks
commonly used for house construction in Mbeya, Tanzania.
Blocks were cast by mixing the natural soil with water and 0, 1, 2,
3 or 4 percent rice husks. The cast blocks were air/sun-dried then
half of them burnt. Tests performed on the blocks include
compressive strength, flexural strength, relative density and
water absorption. Although it constitutes further study, the
efflorescence test were not available when writing this paper.
Findings indicated that much as burnt blocks without rice husks
have higher compressive strength compared to unburnt blocks,
their water absorption is almost three times of the unburnt
blocks. Therefore, unburnt blocks could have more potential to
resist efflorescence than burnt blocks due to its low water
absorption. Results also indicates that rice husks slightly increase
the compressive strength of unburnt blocks but are not beneficial
on burnt blocks.
GSTF Journal of Engineering Technology (JET)
2017-03-24 07:54:58
application/pdf
http://dl6.globalstf.org/index.php/jet/article/view/1824
GSTF Journal of Engineering Technology (JET); Vol 4, No 2 (2017): Journal of Engineering Technology (JET)
eng
Copyright (c) 2017 GSTF Journal of Engineering Technology (JET)
oai:ojs.dl6.globalstf.org:article/1016
2021-02-04T11:18:31Z
jet:ART
"140701 2014 eng "
dc
Impedance Method Used To Calculate Initial Switching Currents in Transmission Networks and Generator Real Power
Machowski, Jan
Kacejko, Piotr
Miller, Piotr
initial switching current, switching operations, synchro-check
Switching-on of transmission network elements can bring about high inrush currents in the network elements (lines and transformers) as well as sudden changes in real power of generating units. In order to reduce those disadvantageous effects in modern power systems switching operations are controlled by protection devices referred to as synchro-check. Optimal setting of the synchro-check parameters requires the application of adequate criteria and an efficient method for calculating current changes in lines and generators that result from switching operations. This article proposes a new calculation method based on a nodal impedance matrix. Such a matrix is commonly used for short-circuit analyses. The advantage of the proposed method is that a short-circuit software with an adequate extension can be also applied to the analysis of switching operations.
GSTF Journal of Engineering Technology (JET)
2015-01-08 06:18:40
application/pdf
http://dl6.globalstf.org/index.php/jet/article/view/1016
GSTF Journal of Engineering Technology (JET); Vol 3, No 1 (2014): Journal of Engineering Technology (JET)
eng
Copyright (c) 2017 GSTF Journal of Engineering Technology (JET)
oai:ojs.dl6.globalstf.org:article/1953
2020-01-28T04:27:29Z
jet:ART
"200128 2020 eng "
dc
Misguided oversupply of dwellings causes housing affordability problem in Sydney
Rahardjo, Rico
House Prices; Housing affordability; Homeownership; Investors; Owner occupiers; Vacancy rates; Risks of home ownership
In most cases, an oversupply of dwellings will reduce house prices and therefore will make them more affordable. However, in Sydney, building more new housing supply causes an upward pressure on residential property prices and thus making home unaffordable. Even most parties such as politicians encourage more supply in an oversupply condition as an effort to ease or reduce exuberance house prices. This paper has revealed an evidence-based on series data of statistic that shows this situation. The finding is significant as empty houses or excess supply do exist and being held by investors to inflate house prices further while the government policy is to build more supply that could increase risks beyond financial risk. Understanding the demand for home ownership is therefore important to solve housing affordability problem.
GSTF Journal of Engineering Technology (JET)
2020-01-26 17:14:06
application/pdf
http://dl6.globalstf.org/index.php/jet/article/view/1953
GSTF Journal of Engineering Technology (JET); Vol 5, No 1 (2018): Journal of Engineering Technology (JET)
eng
Copyright (c) 2020 GSTF Journal of Engineering Technology (JET)
oai:ojs.dl6.globalstf.org:article/1320
2015-08-28T09:25:11Z
jet:ART
"150828 2015 eng "
dc
Nonlinear Data Reconciliation and Gross Error Detection using Branch-and-Bound Technique
Pilario, Karl Ezra S.
Muñoz, Jose Co
data reconciliation; gross error detection; branch-and-bound; hybrid Nelder-Mead particle swarm optimization
Sensor measurements in a process network inherently contain random and/or gross errors. Data are deemed unreliable for process optimization, monitoring, control, and safety. This paper describes a simultaneous data reconciliation (DR) and gross error detection (GED) strategy for adjusting sensor measurements to satisfy mass and energy balances. The problem is modeled as a mixed-integer nonlinearly constrained optimization problem, to be solved by a branch-and-bound technique. The concept of a search tree explains how the technique reduces the search space in optimization. The objective function in each node of the search tree is evaluated using a hybrid Nelder-Mead simplex and particle swarm optimization (NM-PSO) routine from Zahara and Kao (2009). The effectiveness of the method is tested for the highly nonlinear system from Pai and Fisher (1988). In varying number of iterations and number of particles in the NM-PSO routine, the sum-of-squares error (SSE) of the reconciled values from the exact measurements range from 10-6 to 10-1 and the overall power of the DR-GED strategy is a perfect 1.00.
GSTF Journal of Engineering Technology (JET)
2015-08-28 00:00:00
application/pdf
http://dl6.globalstf.org/index.php/jet/article/view/1320
GSTF Journal of Engineering Technology (JET); Vol 3, No 2 (2015): GSTF Journal of Engineering Technology (JET)
eng
Copyright (c) 2017 GSTF Journal of Engineering Technology (JET)
oai:ojs.dl6.globalstf.org:article/747
2014-08-29T08:12:54Z
jet:ART
"140829 2014 eng "
dc
Mechanical Properties of Single- and Quadruple-Crystalline Graphites Containing Interlayer sp3 Bonds Using Molecular Dynamics Simulations
., A. Ito
., S. Okamoto
graphite, molecular dynamics, sp3 bonds, strength
We investigated the influence of interlayer sp3 bonds
on the mechanical properties, such as Young’s modulus, shearing
modulus, and tensile strength of single-crystalline graphite with
the orientation angle of 0° and quadruple-crystalline graphite
with the orientation angle of non-zero degree. It was found that
interlayer sp3 bonds increase the shearing modulus between
layer-planes. In addition, it was found that interlayer sp3 bonds in
a crystallite with the orientation angle of 0° decrease the tensile
strength, whereas those in a crystallite with the orientation angle
of 45° increase the tensile strength and Young’s modulus.
GSTF Journal of Engineering Technology (JET)
2014-08-29 07:41:33
application/pdf
http://dl6.globalstf.org/index.php/jet/article/view/747
GSTF Journal of Engineering Technology (JET); Vol 2, No 1 (2013): Journal of Engineering Technology (JET)
eng
Copyright (c) 2017 GSTF Journal of Engineering Technology (JET)
oai:ojs.dl6.globalstf.org:article/1553
2016-04-20T06:34:40Z
jet:ART
"160411 2016 eng "
dc
Study on urban spaces for foreigners socializing: Focusing on multi-ethnic neighborhoods in Seoul, Korea
Shafray, Ekaterina
Seiyong, Kim
urban multi-ethnic communities; selected interviews; foreigners socializing, public spaces in multi-ethnic neighborhoods, global city
This paper is focused on appearing spatial aspects of foreign migration in the metropolis of Seoul. As an emerging global city, Seoul faced international migration in a compressed period of time. Several multi-cultural neighborhoods and foreigners-related policies are viewed in relation to concept of global city. We observe case studies of multi-ethnic residential neighborhoods with high population of foreigners appeared last decades in Seoul with attention to places of foreign socializing. The study is using literature review and conducted selected social interviews in 2013-2015. Cultural understanding and urban problems of multiethnic neighborhoods in Seoul is a complex issue that needs to be further analyzed from both local and foreign residents’ perspectives. The study is important as it critically addresses challengeable issues for the urban cities culture in South Korea in recent history.
GSTF Journal of Engineering Technology (JET)
2016-04-11 02:59:04
application/pdf
http://dl6.globalstf.org/index.php/jet/article/view/1553
GSTF Journal of Engineering Technology (JET); Vol 3, No 4 (2016): Journal on Engineering Technology (JET)
eng
Copyright (c) 2017 GSTF Journal of Engineering Technology (JET)
oai:ojs.dl6.globalstf.org:article/779
2014-08-29T08:12:55Z
jet:ART
"140829 2014 eng "
dc
Automated Quality Classification of Wooden Parts for Flexible Manufacturing
Koskinen, Jukka
Vaarala, Tapio
Alatalo, Juha
Heikkilä, Tapio
Wood industry, Support vector machines, Image analysis
In this paper we present a system for real-time quality
inspection of wooden parts. The quality inspection system is
based on computer vision and was developed for classifying
wooden parts in an application with automated robotic handling
operations. The quality inspection stands for evaluation of the
surface quality, including image capture, and feature-based
surface classification. The features are extracted from blobs and
the classification algorithm relies on support vector machines.
Based on our test results, the reliability of the classification is at a
sufficient level.
GSTF Journal of Engineering Technology (JET)
2014-08-29 07:41:33
application/pdf
http://dl6.globalstf.org/index.php/jet/article/view/779
GSTF Journal of Engineering Technology (JET); Vol 2, No 1 (2013): Journal of Engineering Technology (JET)
eng
Copyright (c) 2017 GSTF Journal of Engineering Technology (JET)
oai:ojs.dl6.globalstf.org:article/1809
2017-03-25T01:28:14Z
jet:ART
"170324 2017 eng "
dc
Strength Characteristics of SIFCON Using Manufactured Sand for Elevated Temperature
Kumar, Gottapu Santosh
Andhra University College of Engineering, Andhra University,
Rajasekhar, K
Andhra University College of Engineering, Andhra University,
manufactured sand; steel fibre; SIFCON; elevated temperature; mechanical properties
The four components used in producing cement concrete generally are cement, water, sand and aggregate. But, natural sand is being depleted at present and also becoming costly, particularly in the rapidly developing countries like India. Hence, there is a necessity to develop a substitute for the fine sand for use in the concrete mixture, one of which is the manufactured sand developed from locally available quarry stone. Therefore, in this study, investigations are carried out to determine the mechanical properties of manufactured sand and Slurry Infiltrated Fibrous Concrete (SIFCON) made with the manufactured sand. Also, SIFCON specimens are exposed to the elevated temperatures for a period of one hour in this study. The fibre additions in SIFCON vary from 8% to 12% in steps of 2%. The strength properties such as compression, split tensile and flexural strength are studied in the laboratory. The higher the fibre content, the better the results that are achieved in accordance with various strengths: compressive, split tensile and flexural strength. When the specimens are exposed to the elevated temperatures the strength of specimens increases gradually up to a temperature of 300o C. Thereafter, the strength decreases.
GSTF Journal of Engineering Technology (JET)
2017-03-24 07:54:58
application/pdf
http://dl6.globalstf.org/index.php/jet/article/view/1809
GSTF Journal of Engineering Technology (JET); Vol 4, No 2 (2017): Journal of Engineering Technology (JET)
eng
Copyright (c) 2017 GSTF Journal of Engineering Technology (JET)
oai:ojs.dl6.globalstf.org:article/887
2021-02-04T11:29:20Z
jet:ART
"140903 2014 eng "
dc
Communication in Automotive Networks Illustrated with an Example of Vehicle Stability Program: Part I - Control Area Network
Elżbieta, Grzejszczyk
Car networks, implementation of the DAS (Direct Adaptive Steering) system, on-line control over the CAN network, ESP (Electronic Stability Program) system.
The design of DAS (Direct Adaptive Steering) systems has been used in aviation for a long time. A few months ago a Japanese automotive company, Nissan Motor Co, for the first time introduced a steer-by-wire (no mechanical connection between the steering wheel and the front wheels of the car) solution - to the automotive world in their Infiniti Q50 car. This article aims to explain the issues related to controlling the car automation system, in which one of the control parameters is the examined turn of the wheels assigned by the driver (or the DAS system).
GSTF Journal of Engineering Technology (JET)
2014-09-03 10:12:43
application/pdf
http://dl6.globalstf.org/index.php/jet/article/view/887
GSTF Journal of Engineering Technology (JET); Vol 2, No 4 (2014): Journal of Engineering Technology (JET)
eng
Copyright (c) 2017 GSTF Journal of Engineering Technology (JET)
oai:ojs.dl6.globalstf.org:article/1959
2020-01-28T03:43:04Z
jet:ART
"200128 2020 eng "
dc
Urban Rejuvenation through Techno Art Intervention: A case of Kolkata
Bhattacharya, Tanima
techno-art intervention; space rejuvenation; imageability; space design; urban nodes
The images of urban spaces, at present, are manifesting dystopic imageries that are obstructing for the functioning of the public realm. Habitable space of a city should be shaped according to human purposes and to satisfy their needs. In defining urban space design, urban nodes acted as nuclei to provide access and opportunity to the people. Nodes generate out of physical traits, activities and are supported by physical spatial design and public interaction. The scale of nodes varies from large urban squares to a small park, to a partially enclosed space in front of a building, to a sidewalk. Since the cores of the cities are generally highly congested and promoted multi-layered activities, Nodes can be presented strategically to get perceptual importance. Imageability of all these spaces is dependent on the quality attributed to the physical presentation of a space that induces high probability of evoking strong images in the mind of the observer. Thus, rejuvenation of these urban nodes can act as an intervening process to regenerate habitable breathing space amongst the dystopic condition of the city.
With analysis of the existing scenario of these nodes, the elements for techno-art intervention to alter the physical, tangible imageability of the nodes can possibly be identified. Thus, the paper explores the present rate of imageability of the nodes and what could be the possible art and design solutions based on the expert's opinion to intervene for the betterment of the experience of the physical space.
GSTF Journal of Engineering Technology (JET)
2020-01-26 17:14:06
application/pdf
http://dl6.globalstf.org/index.php/jet/article/view/1959
GSTF Journal of Engineering Technology (JET); Vol 5, No 1 (2018): Journal of Engineering Technology (JET)
eng
Copyright (c) 2020 GSTF Journal of Engineering Technology (JET)
oai:ojs.dl6.globalstf.org:article/734
2014-08-29T03:41:11Z
jet:ART
"140829 2014 eng "
dc
Projects and Financing Issues for Rural Electrification in the Developing Countries
., N. Altawell
Construction, Developing Countries, Financing, Projects, Rural Electrification.
When it comes to rural electrification projects in developing countries, financing and project development are two of the main obstacles that have to be resolved in order to sustain long term successful and productive outcomes. In this paper, a number of approaches related to project finance and construction have been analysed, mainly focusing on issues connected to the countryside. Also, a number of financial aspects, as well as financial institutions and organisations, with their resources and structures, have been discussed, whenever they are relevant to rural electrification projects. The broad analysis provided in this paper is for the purpose of exploring projects and their finance within the developing countries, specifically for the purpose of providing electricity where it lacks or shortage is the main development issue.
GSTF Journal of Engineering Technology (JET)
2014-08-29 03:31:25
application/pdf
http://dl6.globalstf.org/index.php/jet/article/view/734
GSTF Journal of Engineering Technology (JET); Vol 1, No 1 (2012): Journal of Engineering Technology (JET)
eng
Copyright (c) 2017 GSTF Journal of Engineering Technology (JET)
oai:ojs.dl6.globalstf.org:article/1484
2015-12-04T02:41:19Z
jet:ART
"151204 2015 eng "
dc
The Matters of the Continuity in Architecture
Kim, Myungshig
continuity; form; space; time
There exists a possibility of integrating an architectural space (building interior) and an urban open space (urban interior) as a single concept of interiority. Architecture is to connect the former with the latter. It can be understood as articulation formed by the rapports and the resonances between different and heterogeneous entities of spaces, and formed in the times from the past to the present to the future. It is a concrete revelation about the form of space as a physical connection which connects inside with outside, and about the shape of time as a nonphysical connection which connects our contemporary dwelling-world with the past and the future. Thus, architecture has a twofold form that contains the continuity of holding spatial and temporal aspects. This paper explores, through the review of selective literatures, the continuities of form between the spaces and between the times. The first site investigated is our perception and experience. Architecture can be understood in two features of: the continuity of the matter-forms perceived by the senses and the continuity of the spatial forms experienced by the sequential movements. The second site explored is the continuity of space that building rooms are connected to urban rooms. The third site dealt with is the continuity in the shape of time. Architecture implies the continued form imprinted by the course of history or its discontinuity. Theoretically discussing the matters of the continuity, the paper clarifies the continuity of form to be a significant design method in the field of architecture.
GSTF Journal of Engineering Technology (JET)
2015-12-04 02:09:17
application/pdf
http://dl6.globalstf.org/index.php/jet/article/view/1484
GSTF Journal of Engineering Technology (JET); Vol 3, No 3 (2015): Journal of Engineering Technology (JET)
eng
Copyright (c) 2017 GSTF Journal of Engineering Technology (JET)
oai:ojs.dl6.globalstf.org:article/769
2014-08-29T08:12:54Z
jet:ART
"140829 2014 eng "
dc
Climate Assessment of Orientation Design in the Housing Master Plan Close to the Airport
Setyowati, A. Erni
Trilistyo, B. Hendro
Climate Assessment; housing master plan design; polynomial regressions of goniometric
This study is a continuation research of Sustainable
Master plan Design in Residential Area Near the Airport which
was previously conducted. In that study, it has been known that
the angles of 135° and 180° towards the runway are the most
effective angles which can reduce noise emitted from the airport.
For reviewing the climate aspects, models are fitted in those
angles, and then the observation of climatic aspects such as:
temperature, humidity and wind speed should be conducted to
review their influence to noise received by inhabitants. The
research methods used were polynomial regressions of
goniometric. And the results are correlation models of noise level
to temperature, humidity and wind speed.
GSTF Journal of Engineering Technology (JET)
2014-08-29 07:41:33
application/pdf
http://dl6.globalstf.org/index.php/jet/article/view/769
GSTF Journal of Engineering Technology (JET); Vol 2, No 1 (2013): Journal of Engineering Technology (JET)
eng
Copyright (c) 2017 GSTF Journal of Engineering Technology (JET)
oai:ojs.dl6.globalstf.org:article/1695
2016-08-19T12:34:27Z
jet:ART
"160819 2016 eng "
dc
A Mixed-use House and Its Ability to Support Selfreliant Lifestyle
Hengrasmee, Sirimas
Faculty of Architecture, Naresuan University
Phitsanulok, ThailanFaculty of Architecture, Naresuan University
Phitsanulok, Thailandd
Chansomsak, Sant
Faculty of Architecture, Naresuan University
Phitsanulok, Thailand
Row House; Self-reliance; Mixed-use building
This paper is based on the research “The physical
potential of a row house and town house in Phitsanulok to
support a self-reliant lifestyle as guided by the Philosophy of
Sufficiency Economy”. The research surveyed and studied the
physical ability of row houses and town houses in urban areas.
Based on the series of former researches on self-reliant of several
types of existing houses, this research continues to study a mixeduse
building of row house and town house. The research actually
expects to get a result that shows low level of self-reliant in all
basic categories. However, not only surpluses can be found from
production in both energy and water for gardening, it has also
proven to be able to produce enough vegetable to comfortably
satisfy a family with two people on its available open areas. The
findings of this research put into focus the ability of a row house
and town house of being a great mixed-use building, not only for
living, working, but also producing life’s essentials as well.
GSTF Journal of Engineering Technology (JET)
2016-08-19 12:05:50
application/pdf
http://dl6.globalstf.org/index.php/jet/article/view/1695
GSTF Journal of Engineering Technology (JET); Vol 4, No 1 (2016): Journal of Engineering Technology (JET)
eng
Copyright (c) 2017 GSTF Journal of Engineering Technology (JET)
oai:ojs.dl6.globalstf.org:article/803
2021-02-04T11:55:34Z
jet:ART
"140829 2014 eng "
dc
Reconstruction Plans with Principles of Sustainability: A Case Study
Rotilio, Marianna
Marchionni, Chiara
Berardinis, Pierluigi De
Sustainability, Reconstruction Plan, Minor centre.
The earthquake that 6 April, 2009, that struck the
Abruzzo Region has aggravated the previous state of
deterioration and abandonment of its internal small towns,
determining inevitable negative territorial, urban and social
structural changes.
These minor centres represent the region's social and cultural
heritage, thanks to the presence of historical, environmental,
spatial, ... values, so their loss would be a loss for the society as a
whole.
In a territory where the wealth of historical, architectural and
cultural heritage is clearly recognized, reconstruct can also mean
to propose sustainable solutions of energy efficiency.
The Commissioner who had the task of managing the post
seismic reconstruction of historical centres, STM, or Technical
Structure of Mission, has established guidelines to project the socalled
"Reconstruction Plan". But in these plans there is no
attenction to the environmental sustainable aspects so the
research activity wanted to understand how operate in these
centres to develop solutions able to improve, non only the seismic
resistant but also the energy efficiency and the exploitation of the
renewable energy.
GSTF Journal of Engineering Technology (JET)
2014-08-29 09:03:07
http://dl6.globalstf.org/index.php/jet/article/view/803
GSTF Journal of Engineering Technology (JET); Vol 2, No 2 (2013): Journal of Engineering Technology (JET)
eng
Copyright (c) 2017 GSTF Journal of Engineering Technology (JET)
oai:ojs.dl6.globalstf.org:article/1931
2017-08-19T11:32:09Z
jet:ART
"170819 2017 eng "
dc
The Productive Infrastructures
Zheng, Jie
Zhang, Yukun
Zhang, Yukun
Zhang, Yukun
component; Productive Infrastructure; Distributed system; Integration; Productive city
Productive Infrastructure is an important support for
establishment of productive city. The layout of productive
infrastructure should not only combine distributed type with
urban space but also integrate with production and processing
system of other resources. In brief, production infrastructure is
required to realize integration of "distributed system" and
"integration and reconfiguration
GSTF Journal of Engineering Technology (JET)
2017-08-19 11:04:55
application/pdf
http://dl6.globalstf.org/index.php/jet/article/view/1931
GSTF Journal of Engineering Technology (JET); Vol 4, No 3 (2017): GSTF Journal of Engineering Technology (JET)
eng
Copyright (c) 2017 GSTF Journal of Engineering Technology (JET)
oai:ojs.dl6.globalstf.org:article/1126
2021-02-04T11:42:16Z
jet:ART
"131201 2013 eng "
dc
Investigation on the Effects of Magnetic Saturation in Induction Machines During Transients
Conradi, Alexander
Schmülling, Christoph
Schmülling, Stefan
induction machines; machine inductances; magnetic saturation; FEM; transient simulation
Magnetic saturation in electrical machines is of major influence on the operating characteristics during transients. For induction machines, the assumption of linear magnetic behavior of the iron core in classical machine models may be adequate for the calculation of steady-state rated operation. In operating points or during transients following a short-circuit or out-of-phase synchronization, where currents can reach values as high as 25 pu, especially the magnetic paths of the leakage fluxes are highly saturated, leading to a significant raise in currents and machine torque. Therefore an investigation on the effect of magnetic saturation has been performed by comparing inductances calculated by analytical methods for assumed linear magnetic behavior with results of static finite-element-method (FEM) models taking magnetic saturation into account. These results are subsequently converted into simplified current-depending parameter functions that can be used in transient machine models. Therefore, based on an enhanced space phasor approach, a newly modified machine model is presented, where the parameters can be used according to the dependencies worked out in the paper in order to identify deviations with the classical approach using constant inductances. Furthermore the newly acquired set of current-depending machine inductances is validated by simulating a series of transients using dynamic FEM calculation, showing a significant improvement in accuracy compared to sets of constant parameters.
GSTF Journal of Engineering Technology (JET)
2015-04-30 09:22:48
application/pdf
http://dl6.globalstf.org/index.php/jet/article/view/1126
GSTF Journal of Engineering Technology (JET); Vol 2, No 3 (2013): Journal of Engineering Technology (JET)
eng
Copyright (c) 2017 GSTF Journal of Engineering Technology (JET)
oai:ojs.dl6.globalstf.org:article/723
2014-08-29T03:36:15Z
jet:ART
"140829 2014 eng "
dc
PRODUCTION CONSTRAINTS OF BIODIESEL AND ITS REMEDIES IN INDIA WITH SPECIAL REFERENCE TO JATROPHA
Chakravarty, Sumit
Sharma, Biplab
., C P Suresh
Biodiesel, Jatropha, Tree borne oilseed species, India
India with its dense population is more prone to energy crisis than its counterparts in other developed countries. Economic, energy along with environmental security concerns arising from overdependence on fossil fuel is now forcing the country to shift for alternative i.e. biofuel. India has a tremendous potential as a producer of biofuels. However, the present production capacity of biodiesel is constrained by the production of feed stocks. The target set by the proposed National Policy on Biofuels is 20 % biodiesel blending after 2017. This set target will only be a reality only when the constraints in biodiesel production and promotion are identified and addressed properly. The paper enlists these constraints and briefly suggests possible remedial measures with special reference to Jatropha so that the set Indian target may be achieved.
GSTF Journal of Engineering Technology (JET)
2014-08-29 03:31:25
application/pdf
http://dl6.globalstf.org/index.php/jet/article/view/723
GSTF Journal of Engineering Technology (JET); Vol 1, No 1 (2012): Journal of Engineering Technology (JET)
eng
Copyright (c) 2017 GSTF Journal of Engineering Technology (JET)
oai:ojs.dl6.globalstf.org:article/1473
2015-12-04T02:41:19Z
jet:ART
"151204 2015 eng "
dc
The Investigation of the Relationship between Drying and Restrained Shrinkage In View of the Development of Micro Cracks
Yatagan, Mehmet Serkan
scanning; shrinkage; cement; micro crack; restrained
Especially, the shrinkage has an essential role for the cement based materials. The shrinkage which is defined as volume change affects the strength and the characteristic properties of the materials and form the degradation mechanisms. Nowadays, according to some researches, the cracks of the restrained shrinkage has an important effect on the deformations of the materials. In laboratory researches, the crack width of the restrained shrinkage is measured by the electron microscope. On the other side, the amount of the shrinkage is measured for the drying shrinkage. The crack width of the drying shrinkage is not measured because it is no possible to measure the crack width accurately and the destructive methods are used to measure the development of the cracks of the drying shrinkage. In this study, the crack widths of the drying shrinkage are measured by the electron microscope used for the measurement of the crack widths of the restrained shrinkage. Therefore, the relationship between the amount of the drying shrinkage and the crack widths is determined. Also, the difference between the crack widths of the drying and restrained shrinkage is evaluated. Besides, there is a relationship between the drying shrinkage and restrained shrinkage. As a result of the microscopic observations of the crack widths of the drying and restrained shrinkage, if the dimensions of the ring samples and drying shrinkage samples are close each other and there are no different stresses, the drying shrinkage is just enough to determine the shrinkage behavior of the plain concrete. Especially, when the maximum aggregate grain size increases, the aggregate holds the cracks as the micro-cracks and supply the self-healing of the cement based materials because when the crack width is constant or develops less, the smaller widths become to close and forms self-healing of the cement based materials.
GSTF Journal of Engineering Technology (JET)
2015-12-04 02:09:17
application/pdf
http://dl6.globalstf.org/index.php/jet/article/view/1473
GSTF Journal of Engineering Technology (JET); Vol 3, No 3 (2015): Journal of Engineering Technology (JET)
eng
Copyright (c) 2017 GSTF Journal of Engineering Technology (JET)
oai:ojs.dl6.globalstf.org:article/760
2014-08-29T08:12:54Z
jet:ART
"140829 2014 eng "
dc
Cultural Sustainability Patterns In Vernacular Architecture: A Case Study of Gilan, Iran
Mottaki, Zoheir
Amini, Iman
cultural sustainable solution; Vernacular architecture; Dweller as Designer; Mutable Geometry; Gilan; Iran
Global sustainable development is facing enormous
challenges. The United Nation’s World Summit (2002)
underscored economic, social, environmental, and cultural
factors as the cornerstones of sustainable development.
Traditional rural architecture represents an interaction between
local culture and vernacular dwellings. Local vernacular
architecture is a cycle encompassing "life pattern", "form
pattern", and "nature". Some of these vernacular heritages may
have remained stable in the face of a changing world, but some
others are threatened with extinction. The purpose of this paper
was primarily to illustrate cultural sustainable solutions in the
vernacular architecture in the northern Iranian province of
Gilan, bordering the Caspian Sea, and discuss a number of
cultural solutions there, including “Dweller as Designer” and
“Mutable Geometry". The conclusion focuses not only on how
the local knowledge of the native residents is in harmony with the
environment from sustainability perspective, but also on how
people can artistically overcome environmental limitations or
natural catastrophes.
GSTF Journal of Engineering Technology (JET)
2014-08-29 07:41:33
application/pdf
http://dl6.globalstf.org/index.php/jet/article/view/760
GSTF Journal of Engineering Technology (JET); Vol 2, No 1 (2013): Journal of Engineering Technology (JET)
eng
Copyright (c) 2017 GSTF Journal of Engineering Technology (JET)
oai:ojs.dl6.globalstf.org:article/1685
2016-08-19T12:34:27Z
jet:ART
"160819 2016 eng "
dc
Design Methods for Creative Industry Buildings
Pieczara, Marta
University of Technology Poznan, Poland
creative industry; creative city; urban landscape; architectural design; design method; sustainable development
Being an important element of the urban space, a
workplace for many people and a landmark for even more, any
industrial building should be mindfully designed with regard to
its importance for the local society. Nowadays, a raising
significance of the creative sector of economy requires particular
attention of architects and urbanists to summarize the methods
supporting the successful design of creative industry buildings.
Among plenty of different design approaches, at first glance
personal to every architect, we can nonetheless identify a set of
general rules and universal design tools which are shared in
common.
GSTF Journal of Engineering Technology (JET)
2016-08-19 12:05:50
application/pdf
http://dl6.globalstf.org/index.php/jet/article/view/1685
GSTF Journal of Engineering Technology (JET); Vol 4, No 1 (2016): Journal of Engineering Technology (JET)
eng
Copyright (c) 2017 GSTF Journal of Engineering Technology (JET)
oai:ojs.dl6.globalstf.org:article/793
2021-02-04T11:54:08Z
jet:ART
"140829 2014 eng "
dc
Sustainable Design for Urban Water Management: A Case Study for Ground Water in U. P., India
Gaurav Chandra, Architect
Chakraborty, Dr. Manjari
Urban water Infrastructure, Sustainability, Groundwater
The basic concept of existing infrastructure systems
in urban scenario for water management (water supply and
waste water treatment) is a century old. A thought should be
given, whether the existing traditional concept, characterized
by centralized structures, mixing of waste water streams of
various qualities and open loop design is suitable to meet the
new today’s requirements with respect to sustainability. Since
water infrastructure systems strongly affect the sustainability
of water resources management, hence it becomes a prime
objective to handle it with great care. Long term perspective
should be developed to integrate technological, organizational
and institutional innovations into coherent alternative urban
water systems with imposed eco-efficiency.
Underpinning the feasibility assessment, design and
construction phases for a range of engineering infrastructure
works requires a sound knowledge and understanding of how
hydrogeology (groundwater) can be impacted and managed.
With prolonged drought, emerging climate change impacts and
population growth, increased demand for groundwater to
augment water supply and greater recognition of the
groundwater value presents new challenges and requirements
for the engineering sector to meet out the sustainability issues.
GSTF Journal of Engineering Technology (JET)
2014-08-29 09:03:07
application/pdf
http://dl6.globalstf.org/index.php/jet/article/view/793
GSTF Journal of Engineering Technology (JET); Vol 2, No 2 (2013): Journal of Engineering Technology (JET)
eng
Copyright (c) 2017 GSTF Journal of Engineering Technology (JET)
oai:ojs.dl6.globalstf.org:article/1922
2017-08-19T11:32:09Z
jet:ART
"170819 2017 eng "
dc
Simulation aided Design : Using “CFD simulation – design loop” for Better Thermal Environment
Huang, Xusheng
Xu, Ming
public space, CFD simulation, thermal comfort, urban design
At present, early research has been conducted in the
fields of the urban heat island effect and urban microclimate on
data collection and valuation, making recommendations for
policymaking and urban planning in tropical cities, e.g.
Singapore. However, it is still rather difficult for urban designers
to apply the findings without useful tools and actionable
knowledge, even though the basis for such has been produced by
urban climate scientists. On this basis, this study focuses on
tropical outdoor space from the interdisciplinary perspective of
urban design and urban climate to explore the practical method
of CFD simulation – design loop for allowing urban designer
access to the urban microclimate and thus applying the
knowledge to create public space for citizens that has enhanced
thermal comfort as well as being aesthetically pleasing. Firstly,
the two dimensions of thermal comfort – social cultural and
technological – are clarified. The study then summarizes the
problem of current urban climate research that relies on lowresolution
and abstract models, and the development of CFD
simulation as an applicable solution. The CFD simulation –
design loop is thus proposed as a useful method for research and
practice by urban designers. Finally, this study suggests future
systematic research on measurable elements of public space to
take this important area forward.
GSTF Journal of Engineering Technology (JET)
2017-08-19 11:04:55
application/pdf
http://dl6.globalstf.org/index.php/jet/article/view/1922
GSTF Journal of Engineering Technology (JET); Vol 4, No 3 (2017): GSTF Journal of Engineering Technology (JET)
eng
Copyright (c) 2017 GSTF Journal of Engineering Technology (JET)
oai:ojs.dl6.globalstf.org:article/1021
2021-02-04T11:23:04Z
jet:ART
"140701 2014 eng "
dc
House me Tender Total Precast Cell Systems for Mass Customized Housing in Hong Kong and China (March 2014)
Ottevaere, O.
adaptive systems, catalogue of parts, mass customization, precast housing
Mass produced precast elements are increasingly favored by the housing sector in Hong Kong and China largely to minimize construction time and labor on site and to ensure greater building quality of industrialized components. These elements often consist of semi-precast slabs, partition walls and façade plug-ins that externally embellish a still rudimentary cast in place column-slab system. The aspirations for such vertical housing models are more aimed at maximizing real estate profits for developers and reducing the construction cost for affordable housing. They often fall short to internally offer better spatial and living qualities to its prospective residents and to generate a vibrant community structure from within. The scale of these current housing models directly address the large scale of the surrounding urban context while bypassing the human scale altogether. A relentless repetition of the same living units across great heights portrays these glazed monoliths as socially isolated on large commercial podiums.
While remaining competitive and efficient against current models, the paper proposes new environmentally enhanced housing prototypes developed at incrementing scales that reassert the individual as the main protagonist for the making of their own living environment. This is achieved through mass customization of precast volumetric units. Prospective residents are able to choose from a catalogue of variants, customized units that conglomerate into unique three dimensional living entities that make up for the overall identity of the building. Choices for each type of units are based on the desired types of openings, amount of semi outdoor terraces, location of glass enclosure and shaded and well ventilated spaces.
To seek to implement mass customization in precast housing puts forward greater flexibility and adaptability over time in accommodating various types of living units for various social needs and ultimately challenges the supported tendency to segregate housing types for specific social groups.
GSTF Journal of Engineering Technology (JET)
2015-01-08 06:18:40
application/pdf
http://dl6.globalstf.org/index.php/jet/article/view/1021
GSTF Journal of Engineering Technology (JET); Vol 3, No 1 (2014): Journal of Engineering Technology (JET)
eng
Copyright (c) 2017 GSTF Journal of Engineering Technology (JET)
oai:ojs.dl6.globalstf.org:article/1916
2017-08-19T11:31:49Z
jet:ART
oai:ojs.dl6.globalstf.org:article/1325
2015-08-28T09:25:11Z
jet:ART
"150828 2015 eng "
dc
Representation Of Harmony In Javanese Culture In Building Design Of Kauman Yogyakarta
Rianingrum, Cama Juli
Sachari, Agus
Santosa, Imam
design, building, Kauman Yogyakarta settlement, Javanese cultural values
Kauman Settlement in Yogyakarta, Indonesia is an urban village settlement located inside the complex of Kraton Yogyakarta (Palace of Yogyakarta). At first, the settlement was a facility provided by Sultan Hamengku Buwono for the abdi dalem (employees) of Masjid Gedhe (Great Mosque of the Palace of Yogyakarta). Social, political and cultural changes have occurred for approximately three centuries, from the Dutch Colonialism era up to now. These changes have both physical and non-physical effects to lives of the people and the shape of the settlement. Physically, the building designs have become more heterogenous, albeit without neglecting the basic concept of Javanese traditional architecture. The process of building and developing the settlement is supported by Javanese cultural values devoutly practiced by the settlers. The Javanese tradition does not fade out even though other cultures have interfered and influenced the traditional culture. In order to understand how the people of Kauman Yogyakarta shape their settlement in relation to the traditional Javanese values they are practicing, observation of literature, collection of field data and interviews for the purposes of analysis are conducted. Kauman Yogyakarta today is a settlement with a distinctive feature, a place of traditional Javanese culture amidst the business center of modern Yogyakarta.
GSTF Journal of Engineering Technology (JET)
2015-08-28 00:00:00
application/pdf
http://dl6.globalstf.org/index.php/jet/article/view/1325
GSTF Journal of Engineering Technology (JET); Vol 3, No 2 (2015): GSTF Journal of Engineering Technology (JET)
eng
Copyright (c) 2017 GSTF Journal of Engineering Technology (JET)
oai:ojs.dl6.globalstf.org:article/751
2014-08-29T08:12:54Z
jet:ART
"140829 2014 eng "
dc
Snakebite Prevention and Management Action Plan for Petrol Filling Stations
., aM. M. Ahmed
., S. R.M. Kutty
Khamidi, aMohd Faris
., I. Othman
Olisa, Emmanuel
., Ali Riahi
., Muhamad, N. S
Accidents, control, management, prevention, snakebite.
Issues related to occupational health & safety is quite
common at Petrol Filling Station (PFS) sites. It includes
snakebites, electrocutions, fall/slips, fire/explosions, vehicle
accidents, wind/rain storms and robbery. PFS are located all
around the world to fulfill the fuel demands of nations. They are
available in urban as well as rural areas. Problems related to
occupational health safety vary from country to country and
sometimes even from place to place. The present study was
conducted in Pakistan to collect data related to unsafe acts and
unsafe conditions in Company ‘X’ (not a true name as the
permission to use their real name was not given). Company ‘X’
is a petrol filling station operator organization. It has more than
2500 PFS all over Pakistan. Besides, these PFS it also helps to
meet the fuel demands of armed forces and airports. Six months
data collected related to accidents, incidents and near misses
from 2500 outlets. Total 674 unsafe acts and unsafe conditions
were reported. 47 accidents, 137 incidents and 476 near misses
recorded. All hazards were categorized by using Risk
Assessment Criteria. Total 14 snakebite cases reported.
Although, the probability of occurrences of snakebite cases found
low but it got highest ranking as per risk assessment criteria.
Snakebite found one of the most occurring causes that can lead
up to fatality, if not treated properly. This study will elaborate
the snakebite and prevention action plan for PFSs. This study
will propose preventive actions against snakebite, snakebite
control program and management of snakebite.
GSTF Journal of Engineering Technology (JET)
2014-08-29 07:41:33
application/pdf
http://dl6.globalstf.org/index.php/jet/article/view/751
GSTF Journal of Engineering Technology (JET); Vol 2, No 1 (2013): Journal of Engineering Technology (JET)
eng
Copyright (c) 2017 GSTF Journal of Engineering Technology (JET)
oai:ojs.dl6.globalstf.org:article/1558
2016-04-20T06:34:40Z
jet:ART
"160411 2016 eng "
dc
Early Railway Suburbs and Their Links to Contemporary Transit-Oriented Developments
Zarabi, Zahra
Bhatt, Vikram
transit-oriented development; early railway suburbs; Town of Mount Royal; sustainable development
Since the late 1980’s, Transit-Oriented Development (TOD) has emerged as a sustainable interpretation of neotraditional community design that promised to address a myriad of spatial planning issues. Being first introduced in North America, the concept highlighted the importance of integrating land use and transport systems with the aim of decreasing automobile dependency. Although, urban planners and transportation scholars have raised TOD’s profile in practice, the origins of this concept go back much further. There are some remarkable examples of large-scale real estate developments across North America, established on properties owned by transit companies, with the aim of generating revenue for the transit company and the government. One of the most successful Canadian examples of this type of development is the Town of Mount Royal located in Montreal. This suburban development, which emerged at the dawn of the twentieth century, predates, by almost a century, the contemporary concept of TOD. This paper looks at this development comprehensively and discusses the lessons learned from it. Additionally, using several recent Canadian TODs the study compares old and new developments and challenges faced within their design and operation process. By evaluating the first generation of transit-oriented development, the paper is meant to serve as a guideline for further work that seek to define the origins of TOD and propose standards of practice for the next generation of projects.
GSTF Journal of Engineering Technology (JET)
2016-04-11 02:59:04
application/pdf
http://dl6.globalstf.org/index.php/jet/article/view/1558
GSTF Journal of Engineering Technology (JET); Vol 3, No 4 (2016): Journal on Engineering Technology (JET)
eng
Copyright (c) 2017 GSTF Journal of Engineering Technology (JET)
oai:ojs.dl6.globalstf.org:article/784
2021-02-04T11:47:05Z
jet:ART
"140829 2014 eng "
dc
Conductometric Gas Sensors based on Nanostructured WO3 Thin Films
., M. Ahsan
., T. Tesfamichael
Yarlagadda, Prasad KDV
films; WO3; thermal evaporation; annealing.
Nanostructured WO3 thin films have been prepared by
thermal evaporation to detect hydrogen at low temperatures.
The influence of heat treatment on the physical, chemical and
electronic properties of these films has been investigated. The
films were annealed at 400oC for 2 hours in air. AFM and TEM
analysis revealed that the as-deposited WO3 film is high
amorphous and made up of cluster of particles. Annealing at
400oC for 2 hours in air resulted in very fine grain size of the
order of 5 nm and porous structure. GIXRD and Raman analysis
revealed that annealing improved the crystallinity of WO3 film.
Gas sensors based on annealed WO3 films have shown a high
response towards various concentrations (10-10000 ppm) H2 at
an operating temperature of 150oC. The improved sensing
performance at low operating temperature is due to the optimum
physical, chemical and electronic properties achieved in the WO3
film through annealing.
GSTF Journal of Engineering Technology (JET)
2014-08-29 09:03:07
application/pdf
http://dl6.globalstf.org/index.php/jet/article/view/784
GSTF Journal of Engineering Technology (JET); Vol 2, No 2 (2013): Journal of Engineering Technology (JET)
eng
Copyright (c) 2017 GSTF Journal of Engineering Technology (JET)
oai:ojs.dl6.globalstf.org:article/1814
2017-03-25T01:28:14Z
jet:ART
"170324 2017 eng "
dc
Phases of Development: A Cultural, Societal and Environmental Overview of Abu Dhabi’s Urban Morphology
Allawi, Hannah A.
University of Calgary
Emergent Cities; Gulf Cooperation Council; Instant Cities; Urban Morphology
Instant cities are on the rise. With a global trend that
has stretched from the Far East to the Middle East, these emergent
cities have challenged the world through their instant urban
growth and their spectacular economic impact on a global scale.
Cities like Shanghai and Dubai have been instrumental in the
growth of other emergent cities - the craze of ‘Dubaization’ [1] or
Dubai-mania has been on the rise through out the more
politically stable countries of the Gulf Cooperation Council
(GCC) in the Middle East. The GCC came together in 1981
uniting the countries of Qatar, the United Arab Emirates
(UAE), Oman, Saudi Arabia, Bahrain and Kuwait. In recent
years, cities of the GCC, primarily, Doha, Riyadh, Abu Dhabi
and Manama have each adapted to the notion of instant urban
growth, and much like Dubai, they have become part of the race
for urban and architectural development. This paper will
examine the city of Abu Dhabi as a case study considering its
uniqueness and rich history, though considered short in
comparison with other major cities around the world. Abu Dhabi has
an opportunity to document and analyze its architectural and
urban evolution in order to fully understand its past, present
and potential future as a modernized metropolis. Instant cities
now have the challenge to meet the needs of environmental
sustainability in order to become even smarter cities and thus
must face the challenge of adapting their existing urban
fabric to accommodate sustainable urban and architectural
development.
This paper provides an overview of the urban morphology of
Abu Dhabi, an influential instant Arab gulf city, and the process
of their instantaneous urban growth. An overview of their urban
history may call upon the question of their future adaptability and
current progress for future changes to the city. The current research
identifies the unique historical phases of urban development of
Abu Dhabi up to present day that each correspond to and contain
their distinctive cultural, societal and environmental factors
that have helped shaped the city – these factors have been taken
into consideration when defining the stages of urban
development through the defined phases.
The continuous development of the city of Abu Dhabi, to a
great extent, considers its ongoing growing economy and
distinctive environment contained as part of each defined
period provided in the following overview.
GSTF Journal of Engineering Technology (JET)
2017-03-24 07:54:58
application/pdf
http://dl6.globalstf.org/index.php/jet/article/view/1814
GSTF Journal of Engineering Technology (JET); Vol 4, No 2 (2017): Journal of Engineering Technology (JET)
eng
Copyright (c) 2017 GSTF Journal of Engineering Technology (JET)
oai:ojs.dl6.globalstf.org:article/1012
2021-02-04T11:17:57Z
jet:ART
"140701 2014 eng "
dc
The architectural culture of the Eurasian Mediterranean region: a testimony of satisfactory design for urban infrastructures (May 2014)
Varela Alvaro, Susana M.
Neila González, F. Javier
architecture, culture, design, domestic, dwelling, heritage, history, Mediterranean
The purpose of this paper is to expose the importance of observing cultural systems present in a territory as a reference for the design of urban infrastructures in the new cities and regions of rapid development. If we accept the idea that architecture is an instrument or cultural system developed by man to act as an intermediary to the environment, it is necessary to understand the elemental interaction between man and his environment to meet a satisfactory design.
To illustrate this purpose, we present the case of the Eurasian Mediterranean region, where the architectural culture acts as a cultural system of adaptation to the environment and it is formed by an ancient process of selection. From simple observation of architectural types, construction systems and environmental mechanisms treasured in mediterranean historical heritage we can extract crucial information about this elemental interaction.
Mediterranean architectural culture has environmental mechanisms responding to the needs of basics habitability, ethnics and passive conditioning. These mechanisms can be basis of an innovative design without compromising the diversity and lifestyles of human groups in the region. The main fundament of our investigation is the determination of the historical heritage of domestic architecture as holder of the formation process of these mechanisms.
The result allows us to affirm that the successful introduction of new urban infrastructures in an area need a reliable reference and it must be a cultural system that entailing in essence the environmental conditioning of human existence. The urban infrastructures must be sustainable, understood and accepted by the inhabitants. The last condition is more important when the urban infrastructures are implemented in areas that are developing rapidly or when there is no architectural culture.
GSTF Journal of Engineering Technology (JET)
2015-01-08 06:18:40
application/pdf
http://dl6.globalstf.org/index.php/jet/article/view/1012
GSTF Journal of Engineering Technology (JET); Vol 3, No 1 (2014): Journal of Engineering Technology (JET)
eng
Copyright (c) 2017 GSTF Journal of Engineering Technology (JET)
oai:ojs.dl6.globalstf.org:article/1956
2020-01-28T04:12:50Z
jet:ART
"200128 2020 eng "
dc
Energy Consumption Towards a Better Future: Knowledge Practice and Attitude of college students in UAEU
Salam, Abul
Attitude Forms of Energy, Knowledge, Practice
Energy exists in many different forms such as light energy, heat energy, mechanical energy, gravitational energy, electrical energy, sound energy, chemical energy, Nuclear or atomic energy and so on. These forms of energy can be relocated and converted between one another. When source of energy end up as electricity, it moves with many Transformations before it can power the light bulb. The aim of this study was to explore the level of student’s awareness on the importance of saving energy as well as to investigate knowledge practice and attitude towards energy consumption.Quantitative and qualitative methods were used to collect the data through interview among students of the United Arab Emirates University (UAEU) in Al Ain. Secondary data’s were collected from Al Ain Municipality.
The first outcome of the research was the key cause of overuse of energy consumption is a lack of awareness. The second was that consumers are unable to assess whether their consumption is low, average or high and lastly most of the respondents understand how the energy consumption effects the environment and they will try their best to help manage and control this issue.
Overall the results show the negative effects of overuse of energy consumption to our environment and suggest that to bridge the gap; human beings should change their behavior to save our environment. Therefore, major challenge will be to introduce a set of uniform energy policies to address specific constraints to the household adoption of energy conservation practices.
GSTF Journal of Engineering Technology (JET)
2020-01-26 17:14:06
application/pdf
http://dl6.globalstf.org/index.php/jet/article/view/1956
GSTF Journal of Engineering Technology (JET); Vol 5, No 1 (2018): Journal of Engineering Technology (JET)
eng
Copyright (c) 2020 GSTF Journal of Engineering Technology (JET)
oai:ojs.dl6.globalstf.org:article/1131
2021-02-04T11:43:58Z
jet:ART
"131201 2013 eng "
dc
Analysis of the Breakdown and Electrical Arc in the Process of Switching on
Kolimas, Łukasz
electric field strength, electric arc, electrical contacts
Switching on current in an electric circuit occurs
hence not due to securing the contact of contacts, but as a result
of electric break down of the isolation of the given environment.
The switching-on arc glowing time depends hence on the value of
the intensity of electric field in the contact area, and on the
velocity of contacts closing. The paper describes the analysis of
the electrical fields and problems of the arc switching time in
contact switches during making of a current in current paths and
test.
GSTF Journal of Engineering Technology (JET)
2015-04-30 09:22:48
application/pdf
http://dl6.globalstf.org/index.php/jet/article/view/1131
GSTF Journal of Engineering Technology (JET); Vol 2, No 3 (2013): Journal of Engineering Technology (JET)
eng
Copyright (c) 2017 GSTF Journal of Engineering Technology (JET)
oai:ojs.dl6.globalstf.org:article/741
2014-08-29T03:44:28Z
jet:ART
"140829 2014 eng "
dc
Orthopedic bone plates: Evolution in Structure, Implementation technique and biomaterial
Malekani, Javad
Schmutz, Beat
., Yuantong Gu
Schuetz, Michael
Yarlagadda, Prasad
Orthopedic bone plate, LCP, LISS, PC-Fix, LC-DCP, Biomaterial, Biometal, Biocopmosites, Bioceramics, Inert, Bioactive, Biocompatible, Biodegradable
With many important developments over the last century, nowadays orthopedic bone plate now excels over other types of internal fixators in bone fracture fixation. The developments involve the design, material and implementation techniques of the plates. This paper aims to review the evolution in implementation technique and biomaterial of the orthopedic bone plates. Plates were initially used to fix the underlying bones firmly. Accordingly, Compression plate (CP), Dynamic compression plate (DCP), Limited contact dynamic compression plate (LC-DCP) and Point contact fixator (PC-Fix) were developed. Later, the implementation approach was changed to locking, and the Less Invasive Stabilization System (LISS) plate was introduced as a result. Finally, a combination of both of these approaches has been used by introducing the Locking Compression Plate (LCP). Currently, precontoured LCPs are mainly used for bone fracture fixation.
In parallel with structure and implementation techniques, numerous advances have occurred in biomaterials of the plates. Titanium and stainless steel alloys are now the most common biomaterials in production of orthopedic bone plates. However, regarding the biocompatibility, bioactivity and biodegradability characteristics of Mg alloys, Ta alloys, SMAs, carbon fiber composites and bioceramics, these materials are considered as potentially suitable for plates. However, due to poor mechanical properties, they have very limited applications. Therefore, further studies are required in future to solve these problems and make them feasible for heavy-duty bone plates.
GSTF Journal of Engineering Technology (JET)
2014-08-29 03:31:25
application/pdf
http://dl6.globalstf.org/index.php/jet/article/view/741
GSTF Journal of Engineering Technology (JET); Vol 1, No 1 (2012): Journal of Engineering Technology (JET)
eng
Copyright (c) 2017 GSTF Journal of Engineering Technology (JET)
oai:ojs.dl6.globalstf.org:article/1492
2015-12-04T02:41:19Z
jet:ART
"151204 2015 eng "
dc
Measures for Success in Dam Bottom Outlet Design
Amirsayafi, Pouya
dams; bottom outlet; reservoirs
The present paper investigates measures for successful design of dam bottom outlets. First, some of definitions and functions of bottom outlets are provided. Associated challenges and solutions will be discussed. Different parts of bottom outlets like intake structures, conduit, control structure and outlet structures are discussed and measures for successful design for each of them are presented with related design cases. Also risk management measures for ensuring successful performance of bottom outlets are discussed with proper examples.
GSTF Journal of Engineering Technology (JET)
2015-12-04 02:09:17
application/pdf
http://dl6.globalstf.org/index.php/jet/article/view/1492
GSTF Journal of Engineering Technology (JET); Vol 3, No 3 (2015): Journal of Engineering Technology (JET)
eng
Copyright (c) 2017 GSTF Journal of Engineering Technology (JET)
oai:ojs.dl6.globalstf.org:article/774
2014-08-29T08:12:54Z
jet:ART
"140829 2014 eng "
dc
Corporate Image: Consolidation of Pioneer Architecture with Innovative Structure
Demiri, Konstantina
corporate image, monumentality, flexibility, transparency, innovation, environmental sensibility, structural system, architectural form, Fordism, post-Fordism
Factories are historically a category of buildings where
pioneer architectural forms interweave with innovative
structures in order to fulfill the spatial requirements of the
production process and also to promote an image of the company
addressed internally and externally to its domain. Selected
examples from the early 19th century until today show that
initially a shift occurred from the era of references to classical
precedents to an age of modern monumentality within the
framework of Modernism. Later on, in the post-Fordist period
flexibility and high-tech idiom prevailed and recently the
industrial space is considered as an area of spectacle and
expression of sustainable values. Transparency as a desired
quality of the corporate image has interpreted and applied in
various ways during the 20th century.
GSTF Journal of Engineering Technology (JET)
2014-08-29 07:41:33
application/pdf
http://dl6.globalstf.org/index.php/jet/article/view/774
GSTF Journal of Engineering Technology (JET); Vol 2, No 1 (2013): Journal of Engineering Technology (JET)
eng
Copyright (c) 2017 GSTF Journal of Engineering Technology (JET)
oai:ojs.dl6.globalstf.org:article/1700
2016-08-19T12:34:27Z
jet:ART
"160819 2016 eng "
dc
The Implementation and Design of a Multi-Reflector Cup for LED Lighting
Chou, Tse-Ya
National Taipei University of Technology, Taipei, Taiwan
Chou, Ding-Chin
National Taipei University of Technology, Taipei, Taiwan
Gao, Ling-Guei
National Taipei University of Technology, Taipei, Taiwan
light-emitting diode lighting; multi-reflector cups; beam angle
In recent years, the luminous efficacy of light emitting
diodes (LEDs) has met energy conservation requirements.
However, in lighting applications, lighting instruments must be
appropriately applied to illuminate regions of interest. In this
study, the LED AR111 downlight was used as an example to limit
beam areas within a preset illuminating range. The TRIZ method
was applied to generate ideas for product design concepts. We
proposed installing replaceable gratings on LED lighting
instruments, three types of multi-reflector cups that can be
installed at various angles were designed for use in lighting
instruments, and designed multi-reflector cups within gratings
based on compound parabolic concentrator principles for
calculating various beam angles, thereby improving the
distribution of luminous intensity by using secondary optics. The
3D model and optical simulation showed that multi-reflector cups
effectively controlled beam angles, satisfied various types of
applications for illuminated objects, and enabled the effective
utilization of light beams. By manufacturing a lighting
instrument and measuring the distribution of luminous intensity,
we ascertained that the use of multi-reflector cups in lighting
instruments effectively prevented glare. Moreover, replacing the
multi-reflector cups for use at different angles enabled the
illuminated object to receive favorable lighting. The component
was verified to satisfy design requirements.
GSTF Journal of Engineering Technology (JET)
2016-08-19 12:05:50
application/pdf
http://dl6.globalstf.org/index.php/jet/article/view/1700
GSTF Journal of Engineering Technology (JET); Vol 4, No 1 (2016): Journal of Engineering Technology (JET)
eng
Copyright (c) 2017 GSTF Journal of Engineering Technology (JET)
oai:ojs.dl6.globalstf.org:article/883
2021-02-04T11:58:00Z
jet:ART
"140903 2014 eng "
dc
Development of Real-Time Adaptive Noise Canceller and Echo Canceller
Jiang, Jean
Adaptive finite impulse response filter, DSP board, echo cancellation, LMS algorithm, noise cancellation
In this paper, the adaptive cancellation structure is first
developed based on the LMS algorithm and FIR adaptive
filtering. Then the novel practical noise and echo cancellation
systems are built using the proposed adaptive technique and
implemented using TX320TMS67C13 DSKs, which are Texas
Instruments’ Digital Signal Processing (TI DSP) boards.
Although adaptive filtering is an exciting topic in which many
real-life applications can be explored [1]-[6], [9], building such a
real-time system is often challenging due to the use of theoretical
math, advanced DSP knowledge and practical industrial hands-on
experience [1],[4]-[6],[9]. Therefore, this paper indicates that it is
possible to apply traditional mathematics in adaptive filtering
theory to real-time practical DSP systems. With the MATLAB
software tool, we can simulate and verify various adaptive
filtering designs first. Then, development and implementation of
different noise or echo cancellation systems with adaptive filtering
techniques can be successfully performed using the floating-point
digital signal processor, TX320TMS67C13 DSK. Furthermore, it
can be shown that TX320TMS67C13 DSKs with their stereo
channels offer more effective and flexible tools for various noise
cancellation applications.
GSTF Journal of Engineering Technology (JET)
2014-09-03 10:12:43
application/pdf
http://dl6.globalstf.org/index.php/jet/article/view/883
GSTF Journal of Engineering Technology (JET); Vol 2, No 4 (2014): Journal of Engineering Technology (JET)
eng
Copyright (c) 2017 GSTF Journal of Engineering Technology (JET)
oai:ojs.dl6.globalstf.org:article/1936
2017-08-19T11:32:09Z
jet:ART
"170819 2017 eng "
dc
Formulating a Theoretical Framework to a Dynamic Automated Real Estate Valuation Appraisal: An Urban Planning Perspective
Al-Jaralla, Ahmed
Real Estate, Urban Planning, Dimensions, Variables, Appraisal, Automated
Although there have been many studies regarding the
real estate valuation process, still, most of them emphasized the
financial aspects of the process and neglected the planning aspects.
Moreover, Saudi Arabia is witnessing a rapid growth in its real
estate market, and more companies in the real estate assessment
and pricing business are becoming very competitive. Recently,
Saudi Arabia established the Saudi Authority for Accredited
Valuers, which is named TAQEEM and was established in early
2017 to organize and control the real estate valuation process. The
purpose of this study is to formulate a theoretical framework for a
real estate valuation appraisal in the Kingdom of the Saudi
Arabia. The study analyzes literature reviews by using a
descriptive approach. The review focused on eight dimensions of
the real estate valuation process: they are the supply, demand,
legal, environmental, inflation control, social economics and
demography, urban planning, and architecture. Under each of
these dimensions, 64 variables were identified, and they will be
considered in building a theoretical framework for an appraisal of
real estate valuation.
GSTF Journal of Engineering Technology (JET)
2017-08-19 11:04:55
application/pdf
http://dl6.globalstf.org/index.php/jet/article/view/1936
GSTF Journal of Engineering Technology (JET); Vol 4, No 3 (2017): GSTF Journal of Engineering Technology (JET)
eng
Copyright (c) 2017 GSTF Journal of Engineering Technology (JET)
oai:ojs.dl6.globalstf.org:article/730
2014-08-29T03:39:03Z
jet:ART
"140829 2014 eng "
dc
Annual variations of air pollution in Jahra, Kuwait
Al-Baroud, Aisha
., Fatemah Al-Baroud
Al-Sahali, Mohamed
Ettouney, Hisham
field measurements; meteorological parameters, air pollution, AERMOD dispersion model.
A study of air pollution in Jahra residential area has been conducted over a period of five years on a 24 hours basis. Measurements of air pollutants and meteorological parameters were taken at 5 minutes intervals at Jahra from 2000-2004. The measured pollutants included sulfur dioxide (SO2), nitrogen oxide (NOx), particulate matter (PM), carbon monoxide (CO), ozone (O3), methane hydrocarbons (MHC) and non-methane hydrocarbons (NMHC)). Meteorological parameters monitored simultaneously included ambient temperature and solar intensity. Hourly averages were calculated from the measured data. Air pollution emissions in Jahra were estimated at the following locations: Ali Salem Air Base, Kuwait International Airport, Doha power stations, Jahra industrial area 1 and 2. Motor vehicles emissions were modeled as line source represented by known highways in the Jahra area. Comparison of measured data for CO, NOx, and SO2 were made against US-EPA (Environmental Protection Agency standards). Analysis of this data show that some pollutants are within or below the US-EPA standards, however, other pollutants such as NOx and SO2 exceeded these limits. Higher NOx and SO2 values were caused by increase in the density of population, motor vehicles, power generation, and industrial activities.
GSTF Journal of Engineering Technology (JET)
2014-08-29 03:31:25
application/pdf
http://dl6.globalstf.org/index.php/jet/article/view/730
GSTF Journal of Engineering Technology (JET); Vol 1, No 1 (2012): Journal of Engineering Technology (JET)
eng
Copyright (c) 2017 GSTF Journal of Engineering Technology (JET)
oai:ojs.dl6.globalstf.org:article/1479
2015-12-04T02:41:19Z
jet:ART
"151204 2015 eng "
dc
Tar Decomposition at low Temperatures within staged Gasification Reactors-first Approach towards Mechanisms and Background
Dumfort, Sabrina
Huemer, M
Hofmann, A.
Huber, M. B.
Krueger, J.
floating-fixed-bed; staged gasification; tar removal; tar cracking, biomass CHP
The reduction or decomposition of tar in biomass derived fuel gases is one of the biggest challenges in its utilization for power generation. The floating-fixed-bed technology demonstrated a reduction of tars within the floating-bed reduction reactor (FBRR) of >99% reaching less than 50mg/m3 of tar even before cleaning the product gas. In order to gain more details about the mechanisms being involved in tar release and tar decomposition and to find an explanation for the good product gas quality of this gasification system, different studies conducted directly at a gasification pilot plant and studies concerning tar reduction mechanisms are summarized and compared in this work.
GSTF Journal of Engineering Technology (JET)
2015-12-04 02:09:17
application/pdf
http://dl6.globalstf.org/index.php/jet/article/view/1479
GSTF Journal of Engineering Technology (JET); Vol 3, No 3 (2015): Journal of Engineering Technology (JET)
eng
Copyright (c) 2017 GSTF Journal of Engineering Technology (JET)
oai:ojs.dl6.globalstf.org:article/765
2014-08-29T08:12:54Z
jet:ART
"140829 2014 eng "
dc
From Micro to Macro, the Weakening Effect of the Interfacial Transition Zone to the Structure
Han, Ay Lie
., Purwanto
Energy, FEM Program, ITZ, Load- Displacement, Structural Stiffness.
Research conducted at the Diponegoro University
resulted in the development of an FEM program for analyzing
the influence of the Interfacial Transition Zone (ITZ) between
the aggregates and the mortar, in concrete. It was shown that
indeed, the ITZ has a substantial weakening effect to the ultimate
strength and stiffness modulus behavior of concrete. High wcf,
bleeding and the presence of a water film surrounding the
aggregates, resulted in a decrease of the ITZ quality. The study
was further expanded to analyze this weakening effect to a twostory
building. It was found that the condition of the ITZ
considerably influences the overall performance of a structure.
GSTF Journal of Engineering Technology (JET)
2014-08-29 07:41:33
application/pdf
http://dl6.globalstf.org/index.php/jet/article/view/765
GSTF Journal of Engineering Technology (JET); Vol 2, No 1 (2013): Journal of Engineering Technology (JET)
eng
Copyright (c) 2017 GSTF Journal of Engineering Technology (JET)
oai:ojs.dl6.globalstf.org:article/1691
2016-08-19T12:34:27Z
jet:ART
"160819 2016 eng "
dc
Beyond the railing of Paulo de Frontin Viaduct
Martins, Sabrina Bridi Marcondes
Pontifical Catholic University of Rio de Janeiro, Brazil
Rio de Janeiro, Rio Comprido, viaduct, naturalization, quality of urban space
In recent years we have observed a process of change in
the concept of urban mobility. Today there is a greater
appreciation of the journeys on foot or by bicycle, and a bigger
concern of the need for investments to improve public
transportation as well.
This is one reason why some cities in the world are rethinking
the use of public space and trying to give back to the population
areas that have been degraded and abandoned by the
government, considering demolishing some viaducts. Thus, it can
be said that the demolition of the Perimetral Viaduct, in the Port
Zone of Rio de Janeiro (Brazil), has been a milestone in the
history of national urbanism.
So it is possible to assume that, depending on the results
achieved in the aforementioned area, other parts of the city that
have the same characteristics and that have been affected by the
construction of a viaduct can also be included in a range of issues
and, therefore, call for studies and urban interventions.
Therefore, this study aimed to investigate what makes a good
or a poor neighborhood to its residents, ie, check whether the
presence or absence of a viaduct is key to measure the quality of
the urban space by its immediate vicinity.
As a case study we opted for the Paulo de Frontin Viaduct,
located in the neighborhood of Rio Comprido, in the city of Rio
de Janeiro.
Methodologically, this research has parts of theoretical nature,
where it sought to analyze the origin of the urban chaos and the
history of the neighborhood concerned, and a part that focuses
primarily on the results of interviews with residents and former
residents of Rio Comprido.
The conclusion is that the presence or absence of a viaduct is
less relevant for the quality of the space than it is supposed, and a
viaduct is not decisive in itself to determine either depreciation or
degradation of an existing neighborhood, but it may be deemed
an aggravating factor. This observation further reinforces the
importance of popular participation in city decisions, since they
are the real users.
GSTF Journal of Engineering Technology (JET)
2016-08-19 12:05:50
application/pdf
http://dl6.globalstf.org/index.php/jet/article/view/1691
GSTF Journal of Engineering Technology (JET); Vol 4, No 1 (2016): Journal of Engineering Technology (JET)
eng
Copyright (c) 2017 GSTF Journal of Engineering Technology (JET)
oai:ojs.dl6.globalstf.org:article/799
2021-02-04T11:56:53Z
jet:ART
"140829 2014 eng "
dc
Fermentation of Raw Cassava Starch Using Geotrichum candidum sp. Optimizing enzyme and starch concentrations for alcohol production
., S.N.T. DE SILVA
., A.J.A. TILAKARATNA
., M.M.W.K.B. MANCHANAYAKE
., D.P.S.T.G. ATTANAYAKA
Alcohol, raw starch, α-amylase
Production of bioethanol is a global requirement to
address the question of energy crisis. Attempts have been made
to use agricultural starch based renewable resources to produce
ethanol. Starchy materials should be converted into simpler
sugars prior to fermentation and this is achieved by treating with
enzymes. Fermentation medium containing 1.5 g, 3 g and 10 g of
raw cassava were optimized for brix value by directly inoculating
samples (DIS) with fungi G. candidum or treating the medium
with different concentrations of crude enzyme (50 mL & 100 mL)
and 50% ammonium sulphate fractionated proteins (Enzyme
Treated Samples -ETS). Highest brix values containing samples
for 1.5 g, 3 g and 10 g of cassava under two different
experimental conditions were ETS1, ETS2, ETS3, and DIS1,
DIS2, DIS3 respectively. The samples were fermented with yeast
stock cultures of maximum viable cells (7.065×106 cells cm-3
&86.4% viability). Brix value and alcohol percentage for these
six samples showed that 50% Ammonium sulphate saturated
enzyme samples is suitable to obtain higher brix value when
compared to crude and direct inoculation method. Then the
culture conditions were optimized for starch percentage, pH and
viable cell numbers. The results showed that an effective increase
in Brix value of 2.3 could be obtained with 3 % and 4 % starch
after 12 hrs incubation period when treated with 50%
ammonium sulphate fractionated enzyme. Optimized
fermentation conditions showed that the viable cell numbers of
culture medium decreased during 36-48 hrs of incubation period.
There was a sudden pH drop after 12 hrs and considerable
changes were not observable in prolonged incubation.
Optimization results for alcohol with 4 % starch showed that a
high percentage of alcohol (2.5 %) could be obtained after 60 hrs
incubation. In conclusion, 50% saturated enzyme sample at room
temperature and 4% starch has yielded highest brix value and
resulted 2.5% of alcohol in 100 mL of fermentation medium.
GSTF Journal of Engineering Technology (JET)
2014-08-29 09:03:07
application/pdf
http://dl6.globalstf.org/index.php/jet/article/view/799
GSTF Journal of Engineering Technology (JET); Vol 2, No 2 (2013): Journal of Engineering Technology (JET)
eng
Copyright (c) 2017 GSTF Journal of Engineering Technology (JET)
oai:ojs.dl6.globalstf.org:article/1927
2017-08-19T11:32:09Z
jet:ART
"170819 2017 eng "
dc
The Potential for Ground-Source Cooling of Buildings in the State of Kuwait: Investigation of Subsoil Environment and Properties
Al-ajmi, Farraj F.
Al-shemmari, Ahmed
Al-otaibi, Fahad A.
Aldaihani, Humoud M.
Ground cooling; ambient air temperature, desert climates
In most countries, developing hybrid cooling
techniques to reduce domestic cooling demand is a key objective,
but also poses a particular challenge in desert climates such as
Kuwait. Ground cooling, which is a passive cooling technique,
could help meet this objective. However, the purpose of the
present paper is to investigate the environment and properties at
several points below the ground surface to a maximum depth of
five meters deep. The results showed a reduction in subsoil
temperature during the summer season of about 81 °C,
concerning maximum average ambient air temperature. This
may be shown to have the potential for ground cooling energy for
underground buildings in the desert climate or the use of the
ground cooling application, such as Earth-Air Heat Exchanger.
GSTF Journal of Engineering Technology (JET)
2017-08-19 11:04:55
application/pdf
http://dl6.globalstf.org/index.php/jet/article/view/1927
GSTF Journal of Engineering Technology (JET); Vol 4, No 3 (2017): GSTF Journal of Engineering Technology (JET)
eng
Copyright (c) 2017 GSTF Journal of Engineering Technology (JET)
oai:ojs.dl6.globalstf.org:article/1122
2021-02-04T11:41:28Z
jet:ART
"131201 2013 eng "
dc
U-tube Steam Generator Fault Detection Using Fuzzy Model
Ahmad, Zuheir
Fault detection; Fuzzy model; PWR Power Plant; Steam generator
In safety critical system like power plant system,
the problem of detecting the occurrence of faults is of paramount
importance due to their disastrous consequences. To allow
efficient performance under different operating conditions, a
power plant system requires the integration of many subsystems.
This results in a complex system which will inevitably be
subjected to faults caused by actuators, sensors or subsystems
faults during operation. One of the major subsystems, in power
plant is U-tube Steam Generator (UTSG). This paper is
concerned with Fault Detection and Isolation (FDI) of UTSG
system using fuzzy model. These methods aims at checking the
consistency between observed and predicted behaviour by
residuals. When an inconsistency is detected between the
measured and predicted behaviours obtained using a faultless
system model, a fault can be indicated. Simulation results
presented in the final part of the paper confirm the effectiveness
of this approach.
GSTF Journal of Engineering Technology (JET)
2015-04-30 09:22:48
application/pdf
http://dl6.globalstf.org/index.php/jet/article/view/1122
GSTF Journal of Engineering Technology (JET); Vol 2, No 3 (2013): Journal of Engineering Technology (JET)
eng
Copyright (c) 2017 GSTF Journal of Engineering Technology (JET)
oai:ojs.dl6.globalstf.org:article/717
2014-08-29T03:33:34Z
jet:ART
"140829 2014 eng "
dc
Turkey’s Electricity Production Potential by Geothermal Resources
Bilgin, Oyku
Sakcali, Alaattin
Turkey’s potential; Geothermal energy; electricity production; alternative energy
Turkey has hot water springs suitable for electricity generation between 130 °C-242 °C with natural vapor and hydrothermal alterations in connection with grabens limited to active faults and diffuse young volcanism in Western Anatolia Region. Geothermal energy which is an alternative energy resource has advantages such as low-cost, clean, safe and natural resource. Geothermal energy is defined as hot water and steam which is formed by heat that accumulated in various depths of the Earth's crust; with more than 20 oC temperature and which contain more than fused minerals, various salts and gases than normal underground and ground water. It is divided into three groups as low, medium and high temperature. High-temperature fluid is used in electricity generation, low and medium temperature fluids are used in greenhouses, houses, airport runways, animal farms and places such as swimming pools heating. In this study high temperature geothermal fields and windparks/windfarms in Turkey which are suitable for electricity generation potential were investigated.
GSTF Journal of Engineering Technology (JET)
2014-08-29 03:31:25
application/pdf
http://dl6.globalstf.org/index.php/jet/article/view/717
GSTF Journal of Engineering Technology (JET); Vol 1, No 1 (2012): Journal of Engineering Technology (JET)
eng
Copyright (c) 2017 GSTF Journal of Engineering Technology (JET)
oai:ojs.dl6.globalstf.org:article/1330
2015-08-28T09:25:11Z
jet:ART
"150828 2015 eng "
dc
A Proposal for an Empirical Approach to the Re-creation of Vehicle Drive Cycles
Larson, Andrew James
Dietz, J. Eric
CAN bus, Chassis Dynamometer, Drive Cycle, Gokart.
Vehicles such as buses, delivery trucks, mining equipment,
and motorsport vehicles often repeat a highly defined
pattern, route, or track during normal use. For these vehicles,
standard dynamometer drive cycles are of little use. In this paper
it is proposed that deriving a vehicle drive cycle from empirical
data collected from on-board vehicle sensors would produce more
accurate vehicle characteristic predictions for special purpose
vehicles. This study answers the question “Is it possible to use
recorded vehicle data to replicate a real world driving scenario
for the purpose of vehicle diagnostics?” To reduce the complexity
of the project, an electric go-kart is to be used as test vehicle.
GSTF Journal of Engineering Technology (JET)
2015-08-28 00:00:00
application/pdf
http://dl6.globalstf.org/index.php/jet/article/view/1330
GSTF Journal of Engineering Technology (JET); Vol 3, No 2 (2015): GSTF Journal of Engineering Technology (JET)
eng
Copyright (c) 2017 GSTF Journal of Engineering Technology (JET)
oai:ojs.dl6.globalstf.org:article/756
2014-08-29T08:12:54Z
jet:ART
"140829 2014 eng "
dc
Holistic Success in Higher Education in Engineering and Technology: A Coaching Approach Towards Developing Complete Graduates
Silva, Pujitha
Yarlagadda, Prasad KDV
Mentoring; Engineering Leadership; Life Coaching; Higher Degree Research; Success Factors
The current shortage of engineers in Australia has
been attributed to a gap between engineering education and
practice. Despite the demand for engineers, there is a
significant percentage of engineering graduates with
Australian degrees who do not secure employment as
engineers, especially amongst foreign graduates. Given the
importance of Australian engineering education in light of the
increasing intake of international engineering students by
Australian universities especially from Asia, a clear correlation
needs to be made between engineering higher education, future
job performance, job progression and success in a global
context to close this gap. The coaching approach to learning
and teaching has been proven to be an effective way to develop
people in the workplace. A pilot coaching program is offered to
Engineering and Technology students in Queensland
University of Technology to enable holistic growth in order to
better integrate them to the work force and society at large. It
is hoped that the results and findings of this program will shed
new insights into the holistic development of graduates in these
disciplines.
GSTF Journal of Engineering Technology (JET)
2014-08-29 07:41:33
application/pdf
http://dl6.globalstf.org/index.php/jet/article/view/756
GSTF Journal of Engineering Technology (JET); Vol 2, No 1 (2013): Journal of Engineering Technology (JET)
eng
Copyright (c) 2017 GSTF Journal of Engineering Technology (JET)
oai:ojs.dl6.globalstf.org:article/1567
2016-04-20T06:34:40Z
jet:ART
"160420 2016 eng "
dc
Effect of Aggregate Size on the Engineering Properties of Palm Oil Clinker Concrete
B. Alhasanat, Mahmoud
Al Qadi, Arabi N.
Haddad, Madhar
Al-Mattarneh, Hashem
aggregate size; lightweight concrete, oil palm shell.
In developing countries, abundant agricultural and industrial wastes are discharged; these wastes can be used as potential materials or replacement materials in the construction industry. Malaysia is the world’s largest producer of palm oil in the industry. Since palm oil clinker is abundant, lots of attempt have been made to investigate the possible use of this material, especially in the field of construction more so, as concrete is one of the most versatile construction materials. This agricultural waste, being referred to as Palm Oil Clinker Incinerated By-products (OPIB), can totally replace the stone aggregate in concrete mixtures. In this research, the focus is on the strength development of OPIB concrete. Tests have been conducted to investigate the effect of using OPIB aggregate, on the engineering properties of concrete in order to determine the optimum mix proportion of lightweight concrete, using different OPIB of aggregate size. In the tests, the aggregate is graded and then, the mix proportion of this lightweight concrete is determined by a trial of the mix. Finally, the properties of fresh and hardened concrete tests were determined.
GSTF Journal of Engineering Technology (JET)
2016-04-11 02:59:04
application/pdf
http://dl6.globalstf.org/index.php/jet/article/view/1567
GSTF Journal of Engineering Technology (JET); Vol 3, No 4 (2016): Journal on Engineering Technology (JET)
eng
Copyright (c) 2017 GSTF Journal of Engineering Technology (JET)
oai:ojs.dl6.globalstf.org:article/789
2021-02-04T11:53:22Z
jet:ART
"140829 2014 eng "
dc
Major Characteristics and Functions of New Scheduling Software “Beeliner” Based on the Beeline Diagramming Method (BDM)
Kim, Seon-Gyoo Kim
Critical Path Method, Arrow Diagramming Method, Precedence Diagramming Method, Beeline Diagramming Method, Beeliner
The construction environment has been changing
rapidly over the last several years and with it the techniques used
for managing projects. The schedule management technique, one
of the construction management tools, has evolved as well in order
to adapt to the increasingly complex construction environment.
Most of the recently developed scheduling techniques are based on
the Critical Path Method (CPM) that was proposed in 1956 and is
classified into two categories; Arrow Diagramming (ADM) and
Precedence Diagramming Methods (PDM). ADM is very good at
graphically representing consecutive tasks, but it cannot express
the relationships between two overlapping or concurrent activities.
On the other hand, PDM can express the overlapping
relationships but does not lend itself to visual representation. The
growing complexity of the construction environment, in particular
recently, increases the need for efficient schedule management
and the ability to express the scheduling complexities introduced
by tasks that must run at least in part concurrently. Most
contractors prefer more the more visual format provided by the
ADM method because it is more readily interpreted. Those
software packages based on the PDM provide a means of
addressing the overlapping tasks, however they do not have the
ability to produce a graphical representation of the schedule that
is desired by many contractors and managers. Beeliner is a new
software product that is based on the Beeline Diagraming Method
(BDM), which was originally proposed in 2010, developed into a
product in 2012 and has the ability to express the
overlapping/concurrent tasks while maintaining a readily
understandable graphical representation of a schedule. This
paper presents major features and applications of Beeliner, and
provides construction professionals with an explanation of the
new scheduling product and its applications.
GSTF Journal of Engineering Technology (JET)
2014-08-29 09:03:07
application/pdf
http://dl6.globalstf.org/index.php/jet/article/view/789
GSTF Journal of Engineering Technology (JET); Vol 2, No 2 (2013): Journal of Engineering Technology (JET)
eng
Copyright (c) 2017 GSTF Journal of Engineering Technology (JET)
oai:ojs.dl6.globalstf.org:article/1825
2017-03-25T01:28:14Z
jet:ART
"170324 2017 eng "
dc
Riverfront Development in Indian Cities: The Missing Link
Vriddhi, Vriddhi
Manipal University
Indian Riverfront Development; Public Participation; Value Centered Planning Process
Planned development and redevelopment of
riverfronts are a recent phenomenon in the Indian development
landscape. Contemporary riverfront development projects
generally aim to boost the economy of riverfront cities and are
seen as tools to upgrade and improve the image where social and
ecological benefits are offshoots of development efforts. Cities in
India have diverse conditions, leading to unique contexts which
demand different approach to each development. The paper
discusses two issues for riverfront developments in India that
appear to be the missing links for the projects from planning and
organizational perspective. Public participation and further a
propelling body identified from the stakeholders which can
utilize their specific expertise for supervision, implementation
and maintenance of these projects to bring fast and effective
results. Consequently a corresponding change in planning
process to accommodate the solutions are suggested.
GSTF Journal of Engineering Technology (JET)
2017-03-24 07:54:58
application/pdf
http://dl6.globalstf.org/index.php/jet/article/view/1825
GSTF Journal of Engineering Technology (JET); Vol 4, No 2 (2017): Journal of Engineering Technology (JET)
eng
Copyright (c) 2017 GSTF Journal of Engineering Technology (JET)
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