cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.14455/isec.res.2017.73
title: Economic Scoring Formulae in multi-attribute construction auctions

description: Public tendering implies the free concurrence and competition of bidding companies that certify their solvency, so that those companies proposing the most attractive bid, both technically and economically, are awarded the contracts and carry them out according to the same terms and conditions that they proposed.Generally, there is high competition in public tendering, both concerning the number of bidders (constantly increasing), as well as the profit margin (constantly decreasing). On the other side, handling the procurement process, there is a contracting authority that spends public money while trying to fulfill a particular socio-economic objective.This paper will take the contracting authority
DOI: 10.14455/isec.res.2017.74
title: Influences on Inner City Construction Sites: A Comparison of Theory and Practice

description: In recent decades, social development and demographic changes have led to a significant decline of the number of new building constructions and an increase of refurbishments and building activities in projects in the built environment.Those changes force building companies and construction site managers to adapt their site management concepts due to inner city influences. Especially emissions like noise and dust, transports, and construction site waste should be limited to a minimum in order to prevent inhabitants and neighbors from surpassing inconveniences.To compare theory and practice in terms of efficient and environmental friendly construction site management in inner cities, qualitative interviews were taken, to figure out what actions are applicable in order to keep emissions on a minimum level and where the construction processes and logistic can be improved.The results show, that possibilities - like shifting the transports to railway - could be a proper approach, but are seldom applied. Due to cost and logistical reasons, most efforts are put into neighbor involvement, rather than changing the process of building itself.
DOI: 10.14455/isec.res.2017.78
title: ENVIRONMENTAL IMPACT SHARES OF A REINFORCED CONCRETE EARTH-RETAINING WALL WITH BUTTRESSES

description: Structural engineers focus on the reduction and partial substitution of the cement in reinforced concrete structures, while other impacts such as the ozone depletion and the air acidification become secondary or are left behind. The featured life cycle assessment shows the impacts corresponding to each construction stage of an earth-retaining wall with buttresses. The contribution ratio of each input flow is analyzed. The flows are modeled as individual subsystems of the earth-retaining wall. Accordingly, concrete, landfill, machinery, formwork, steel, and transport are defined as subsystems of the construction of the infrastructure. A previous study showed that the contribution shares of impacts do not linearly vary with the height. Therefore, a functional unit is defined per wall height. Results show that the concrete almost always accounts for the largest contribution to each impact, except for the ozone depletion potential (ODP) and the photochemical oxidation of air (POCP). The use of machinery holds the biggest ODP share (30%) while the steel is the largest contributor to POCP. Once the wall height is fixed, a parameter of study was the recycling rate. A recycling rate of 70% is usually reached. The study shows a noticeable reduction of several impacts when the recycling content increases. The relationship of the impacts of each material with the amount of material used discloses research interest. However, this relationship is greatly influenced by the cement manufacturing technology and the steel recycling potential in the area.
DOI: 10.14457/cmu.the.1999.121
title: ปัจจัยที่มีต่อการเข้าร่วมโครงการประกันสุขภาพ /
DOI: 10.14457/mu.the.2014.103
title: คุณภาพชีวิตการทำงานของนักวิชาการสุขาภิบาลระดับปฏิบัติการ กรุงเทพมหานคร
DOI: 10.14457/mu.the.2014.105
title: ปัจจัยที่มีอิทธิพลต่อการคุ้มครองเด็กจากสื่อที่ไม่พึงประสงค์ทางอินเทอร์เน็ต ตามการรับรู้ของเจ้าหน้าที่องค์กรพัฒนาเอกชน
DOI: 10.14455/isec.res.2017.103
title: CHARACTERISTICS OF THE FRESH MIXTURE OF A NOVEL CEMENT-LESS WASTEPAPER-BASED LIGHTWEIGHT BLOCK (CWLB) AND IT

description: Cement-Less Wastepaper-based Lightweight Block (CWLB) is an eco-friendly lightweight non-loadbearing block newly developed from majorly waste materials. As part of efforts to enable the understanding of its mixture proportioning and production processes, this study presents the characteristics of its fresh mixture and its peculiar molding process. The fresh mix characteristics studied include; the texture, density, elastic modulus, percentage void/porosity and the peculiar molding process. The laboratory experimentation conducted covers; the preparation of the CWLB mix (from mixture of wastepaper aggregate (WPA), sand, waste additive natural admixture and water), determination of physical and deformation properties of the mix and the molding of CWLB specimen. It was found that, for the mixes tested, the fresh mixture of CWLB is fibrous in texture, voluminous in nature and exhibits an average loose bulk density of 305.3kg/m3. Also, average compacted bulk density of 857.6 kg/m3 and 792.38 kg/m3, elastic modulus of 30.28MPa and 28.38MPa and percentage void of 77% and 78% (i.e. porosity of 0.77 and 0.76) were recorded for mixes containing 52% and 36% sand content (measure by weight of WPA) respectively. The molding procedure for CWLB was thus found to be slightly different from those available for conventional masonry blocks in terms of relationship between the mold size, mixture quantity and resulting specimen size. These findings therefore indicate the peculiarity of the physical and deformation properties of the fresh mixture of CWLB and the importance of awareness and understanding of same for efficient production of CWLB.
DOI: 10.14455/isec.res.2017.110
title: YIELD STRESS BASED ON NATURAL STRAIN THEORY UNDER CYCLIC TENSILE-COMPRESSIVE LOADING AFTER LARGE UNIAXIAL TENSION

description: The purpose of this study is to investigate the yield behavior under a large deformation based on the Natural Strain theory. There has been a lot of research on the yielding behavior under cyclic loads. However, many of these researches have been done within the range of the infinitesimal deformation. Therefore, the detailed studies concerning the yield behavior under cyclic loads after applying a large pre-deformation have not been fully elucidated. In this study, using the test pieces made from high purity tough pitch copper, the experiments for cyclic loading of tension and compression are carried out after applying the large uniaxial tension. As a method for determining the yield stress in each cycle, the slope of the tangent at yielding in the deviatoric stress- deviatoric strain curve is used instead of the conventional proof stress. In order to reveal the change of yield stress in cyclic loads after applying large pre-deformations, the experiments are conducted with the different sizes of pre-deformation and the different strain amplitudes. Moreover, the yield behavior under cyclic loads is revealed by comparing with the results from conventional proof stress.
DOI: 10.14455/isec.res.2017.129
title: THE IMPACT OF OBSOLESCENCE IN HEALTH PUBLIC PRIVATE PARTNERSHIP PROJECTS

description: Obsolescence is a major challenge in Infrastructure implementation around the world. South Africa has been implementing PPPs close to 20 years now and some of the first projects will soon come to closure as the end of their term is drawing nigh. Obsolescence is generally mitigated by stipulating that there should be a general overhaul of the facility very close to the end of term in order to preserve and elongate the economic life of the project. However the health projects are very much dependent on the ever-changing technological developments for their optimal performance. Some of the new technological equipment might require infrastructural adaptations. Through interviewing designers, managers and clients the research sought to garner information that could be helpful for future projects in this sector and that could be adapted to other sectors as well. Although it was found that obsolescence was not properly catered for, the experiences of the aforementioned respondents were valuable in proposing general considerations in future projects. It is hoped that lessons will be instructive and beneficial to the other countries which are new to the PPP procurement method, especially when it comes to the implementation of the health facilities.
DOI: 10.14455/isec.res.2017.181
title: Cyclic Loading Tests on Post-tensioned Rocking Columns with Replaceable Energy Dissipaters

description: To mitigate the column damage during seismic events and to reduce the recovery time after a major earthquake, a post-tensioned bridge column with a rocking interface above the foundation and externally-installed energy dissipation devices was proposed. The energy dissipation devices were specially designed to serve as fuse elements that can be easily replaced after yielding. In addition, a mechanical joint that can rotate freely in all directions was incorporated at one end of the dissipater to ensure bending was not transmitted into this device. To verify the seismic performance of the proposed system, two proposed specimens with different prestressing forces and design details in the rocking base were constructed and tested. From the experiments, it was found that the proposed post-tensioned specimens suffered minor damage after cyclic loadings. All of the damage was concentrated on the inelastic deformation that occurred at the external energy dissipaters. The ease of replacement for the external energy dissipaters was also confirmed. However, the stiffness of the proposed system was less than that of the conventional cast-in-place monolithic specimen.
DOI: 10.14455/isec.res.2017.191
title: Measurement and comparison of Snow Density on Ground and Roof

description: With the intensification of global climate changing, the human and economic losses caused by snowstorms becomes higher and higher. Harbin, located in the north of China, has the geographical advantage of heavy snowfall, the density and the distribution of snow on the ground and roof were measured. In the aspect of snow density, the snow density on ground and roofs were measured. The snow is divided into three kinds, and the range of snow density is roughly determined. By comparing the two kinds of measurements on both fields, the effects of location, snow thickness and temperature on snow density are specified. Also, the differences of snow density on both ground and roof, new snow and old snow are got. The results show that the old snow density is greater than the new snow density; The snow density of the roof area is obviously larger than that of the ground area; the ground snow density increases with the accumulation of snowfall.
DOI: 10.14455/isec.res.2017.98
title: Effect of curing temperature on the properties of 100% clay-based geopolymer concrete

description: Substantial researches have already been carried out on alkali-activated binders for the production of geopolymer concrete but studies on clay based geopolymer concrete is still insufficient. The aim of this paper is to identify the effect of curing temperature on the properties of 100 % clay based geopolymer concrete. Clay pre-treated at 800C and 1200C for 24 hours were selected as the source binder material. Four Activator Modulus (AM); 1.0, 1.25, 1.5 and 1.75 for each of two Sodium Oxide (Na2O) dosages of 10% and 15% were selected as the activator material for this investigation. X-ray diffraction (XRF) was applied to characterize the clay material. Specimens were cured at 800C and 1200C for 24 hours. Specimens were tested under compression at 7, 14, 28 and 40 days. Specimens cured at 800C took a longer duration (&gt;28 days) to achieve structural integrity while the specimens cured at 1200C achieved structural intigrity within 7 days. Compressive strength of specimens prepared with AM of 1 for both of the Na2O dosage of 10% and 15% exhibited superior performance to other AMs investigated.
DOI: 10.14457/kmutnb.res.2000.1
title: การศึกษาการทำงานของชุดบำบัดน้ำเสียแบบจานหมุนชีวภาพบำบัดน้ำทิ้ง จากโรงอาหารสถาบันเทคโนโลยีพระจอมเกล้าพระนครเหนือ /
DOI: 10.14457/kmutt.res.1997.11
title: การสร้างอุปกรณ์จำลองสถานการณ์ในการฝึกเชื่อมไฟฟ้าเบื้องต้น /

description: การวิจัยครั้งนี้มีวัตถุประสงค์เพื่อสร้างอุปกรณ์จำลองสถานการณ์ในการฝึกเชื่อมไฟฟ้าเบื้องต้นโดยเปรียบเทียบค่าใช้จ่ายและเวลาในการปฎิบัติงานกับการฝึกปกติตามหลักสูตรสำหรับวิธีดำเนินการวิจัยคณะผู้ป่วยได้สร้างอุปกรณ์จำลองสถานการณ์เพื่อใช้ฝึกทักษะในการเชื่อมไฟฟ้าท่าเรียบและท่าตั้งโดยนำไปทดลองกับกลุ่มตัวอย่างเป็นนักศึกษาระดับปวช.ของวิทยาลัยเทคนิคร้อยเอ็ดที่ไม่เคยผ่านการเชื่อมไฟฟ้ามาก่อนจำนวน 56 คนโดยการสุ่มกลุ่มตัวอย่างเป็นกลุ่มควบคุมและกลุ่มทดลองด้วยวิธีการวัดทักษะพื้นฐานการเชื่อมไฟฟ้ากับอุปกรณ์จำลองสถานการณ์ที่สร้างขึ้นจากนั้นได้ดำเนินการทดลองโดยให้กลุ่มทดลองทำการฝึกปกติจนถึงเกณฑ์ที่ได้กำหนดไว้ส่วนกลุ่มทดลองที่ฝึกกับอุปกรณ์จำลองถึงเกณฑ์ที่ตั้งไว้แล้วจึงทำการฝึกปกติจนถึงเกณฑ์ที่กำหนดไว้เช่นกันหลังจากนำจึงนำข้อมูลมาวิเคราะห์ผลทางสถิติผลที่ได้จากการทดสอบปรากฎว่าอุปกรณ์จำลองสถานการณ์ที่สร้างขึ้นเพื่อใช้ในการฝึกเครื่องไฟฟ้าเบื้องต้นสามารถลดค่าใช้จ่ายเกี่ยวกับวัสดุสิ้นเปลืองเมื่อเทียบกับการฝึกปกติทั้งการฝึกเชื้อมไฟฟ้าทั้งท่าราบและท่าตั้งโดยการฝึกท่าราบลดลง30.48เปอร์เซ็นการฝึกท่าตั้งเชื่อมขั้นลดลง23.21เปอร์เซ็นส่วนเวลาที่ใช้ในการฝึกแบบมีอุปกรณ์จำลองสถานการณ์ก็ใช้เวลาไม่แตกต่างจากการฝึกปกติตามหลักสูตรกำหนดทั้งเวลาในการเชื่อมท่าราบและท่าตั้ง
DOI: 10.14457/mju.res.2013.4
title: การเพิ่มประสิทธิภาพการผลิตลำไยนอกฤดู
DOI: 10.14455/isec.res.2017.184
title: ANALYSIS OF TIMBER COLUMN-GROUND SILL JOINTS REINFORCED WITH IMPROVED ARAMID FIBER SHEETS

description: High-performance aramid fiber sheets are a new class of composite materials made up of weaved polyamide fibers. In this study, the seismic performance and failure behavior of timber column
DOI: 10.14455/isec.res.2017.192
title: NUMERICAL INVESTIGATION OF THE BEARING CAPACITY OF TRANSVERSELY PRESTRESSED CONCRETE DECK SLABS

description: The paper investigates the effect of various geometrical and material parameters on the bearing (punching shear) capacity of transversely prestressed concrete deck slabs by numerical methods. Experiments on a 1:2 scale model of such a bridge were carried out in the laboratory and a 3D nonlinear finite element (FE) model was developed in the finite element analysis software package TNO DIANA to study the structural behavior in punching shear. A comparison of the experimental and numerical ultimate loads show that the non-linear FE models can predict the load carrying capacity quite accurately with a standard deviation of 0.1 and the coefficient of variation of only 10%. The effect of varying the transverse prestressing level, the presence and size of the ducts, size of the loading plate and the concrete class is also described as part of the parametric study. It was observed that sufficient saving in cost can be made if calibrated numerical models are employed to investigate existing structures rather than doing expensive experimental studies.
DOI: 10.14455/isec.res.2017.202
title: OPTIMIZING GREEN-BUILDING PROJECT DELIVERY: COMPARATIVE ANALYSIS OF DESIGN-BID-BUILD AND DESIGN-BUILD DELIVERY METHODS USING CASE STUDIES

description: Green-building-project development following a specific reference standard brings new conditions and restrains for all subjects involved in the process. Such variables affect also the management tasks even during design-development phases. Within this scope, project management plays a key role for the optimization of the design-project development. This research develops a comparative analysis between the design processes of two case-study projects from the project management perspective, taking into consideration all activities that negatively affected the project design. The projects selected for the scope of the research are: a new nursing-home complex located in Italy currently pursuing the LEED Gold certification and a new office-building located in Spain currently pursuing the BREEAM Outstanding certification. The first project was developed following the so-called
DOI: 10.14455/isec.res.2017.4
title: Risk allocation mechanism for Building Projects based on RIBA plan of work

description: The Zambian construction industry, like many other construction industries in developing countries, is characterized with frequent project failure evidenced by quality shortfalls, cost overruns, time overruns and, on occasion, abandonment of projects. Various construction industries, particularly developed ones, have mechanisms in place to alleviate the aforementioned risks. Moreover, it has been reported that construction organizations in developing countries, approach risk management implied risk allocation in construction projects by using a set of practices that are normally insufficient, often produce poor results, and limit the success of project outcome. It is from this background that a risk allocation mechanism tailored to the Zambian building sector is proposed, based on the RIBA plan of work for new large to medium sized projects. Various mechanisms and processes are documented in the existing literature, all developed for particular jurisdictions, project types and modes of procurement. Though beneficial, the crafting of most of these mechanisms does not focus on curtailing sources of inappropriate risk allocation, but rather focuses on who, between the client and contractor, should be allocated a particular risk. This paper documents a mechanism for risk allocation after establishing the causes of risk misallocation through a questionnaire survey, interviews, and document analysis. The mechanism integrates contract practice and risk management to make it robust for alleviating both contractual and non-contractual risks. However, its utility, to an extent, is dependent on the risk perceptions of the user as it is driven by decision-making
DOI: 10.14457/kmutnb.res.2002.3
title: การศึกษารูปแบบการใช้ชีวิตของนักศึกษา สถาบันเทคโนโลยีพระจอมเกล้าพระนครเหนือ ปราจีนบุรี /
DOI: 10.14455/isec.res.2017.111
title: STUDY ON FAILURE MODE OF HUSK MORTAR ENERGY-SAVING WALLBOARDS

description: This paper focuses on husk mortar wallboard, which is a new type of energy-saving composite wallboard with new materials and complex working mechanism. There are totally eight different dimensions panels tested. Six ones of them are opening (window or door), with different opening rates; the other two are full panels with the same dimension. Based on the experimental data, they are analyzed under both horizontal and vertical direction loading, combined with the finite element analysis to reveal the working characteristics. The finite element model of husk mortar energy-saving wallboards is established by ANSYS software. At last the finite element results are compared with the experimental results from three aspects: ultimate load, failure mode and load displacement curve, which all verifies the correctness of the finite element model.
DOI: 10.14455/isec.res.2017.130
title: A REVIEW OF CORPORATE SOCIAL RESPONSIBILITY PRACTICES IN DEVELOPING COUNTRIES

description: The construction industry plays a vital role in every economy by contributing substantially to the national GDP. Managing societal and environmental impacts are at the heart of corporate social responsibility (CSR). CSR has been adopted by many industries to address the negative impacts that result from their operations. Research in CSR within the construction is limited and still in its infancy, especially in The Kingdom of Saudi Arabia (KSA) where there is a negligible uptake of CSR activities and a lack of strategies and guidelines. The construction industry in KSA has not fully embraced the concept of CSR. This paper represents a comprehensive review of the reasons which often militate against the adoption of CSR in general, and specifically in construction within KSA. The paper adopts a structured approach to analyze materials published on the subject looking at CSR in general and how it has been applied in the construction sector, including KSA. The analysis indicates that there are critical factors which have hampered fulfillment of CSR requirements in construction. A lack of awareness and knowledge is the greatest barrier, and the lack of a practical and theoretical framework to examine the level of CSR implementation closely follows in tow. Suggesting that CSR within KSA is currently at a basic level and focused on philanthropic activities. Therefore,there is a need to develop appropriate framework to assist KSA construction companies in integrating CSR fully into their business practices. Keywords: CSR, Construction, Company, Practices, Framework, Barriers, KSA
DOI: 10.14455/isec.res.2017.131
title: DAMAGE MODES AND FAILURE MECHANISM OF 160,000 m3 LNG OUTER CONCRETE TANK UNDER IMPACT LOADING

description: In order to investigate the damage models and failure mechanism of the outer concrete tank of the liquefied natural gas (LNG) storage tank under impact loading, the finite element (FE) model of the outer concrete tank of 160000m3 LNG storage tank for an actual LNG project and a cylindrical impactor are established based on ANSYS/LS-DYNA FE analysis software platform. Through the result comparison of the numerical simulation and an impact perforation test of reinforced concrete slabs subjected to projectile with high speed, the accuracy of the numerical simulation method and material model proposed from this paper are verified. The dynamic response of the concrete dome for LNG outer concrete tank structures under impact loading with varying speed, angle, location and diameter of impactor are studied. Based on response rules and failure phenomena of the dome for LNG outer concrete storage tank subject to impact loading, three damage modes are defined, and the failure mechanism for each mode is revealed from the view point of energy, and the response characteristics and rules with the change of the impact parameter are obtained.
DOI: 10.14455/isec.res.2017.168
title: USING THE ELEMENT-EMBEDDED REBAR MODEL IN ANSYS TO ANALYZE REINFORCED CONCRETE BEAMS

description: ANSYS is a software well acknowledged by professionals and academics, due to its large range of usage options, offering a number of finite element types, good possibilities of constitutive models and linear and nonlinear analysis of structures in general. For the concrete material, the software uses an elastoplastic model with the Willam-Warnke surface of rupture (1975). However, this model is only available for finite elements that do not offer the possibility of use of the element-embedded model for rebars, demanding a much larger amount of elements to discretize structures. This study is about the development of a computational model using the FEM via ANSYS platform for nonlinear analysis of reinforced concrete beams under plane stress states. The most significant advantage of this implementation is the possibility of using the element-embedded rebar model in ANSYS with its 2D quadratic element PLANE183 for discretization of the concrete together with element REINF263 for discretization of rebars and stirrups, making the solutions more efficient. For representation of the constitutive equations of the steel and the concrete, a proposed model was implemented with the help of the UPF customization tool of ANSYS, where new subroutines were attached to the main program. The numerical results are compared with experimental values for 4 reinforced concrete beams originally tested by Bresler and Scordelis (1963) to validate the proposed model, showing satisfactory results.