WorldWideScience

Sample records for satellite construction project

  1. A Large Scale Problem Based Learning inter-European Student Satellite Construction Project

    DEFF Research Database (Denmark)

    Nielsen, Jens Frederik Dalsgaard; Alminde, Lars; Bisgaard, Morten

    2006-01-01

    . The satellite was successfully launched on October 27th 2005 (http://www.express.space.aau.dk). The project was a student driven project with student project responsibility adding at lot of international experiences and project management skills to the outcome of more traditional one semester, single group...... projects. The ESA Educational Office associated a technical coordinator and an administrative coordinator with the project. Since the foundation of Aalborg University (AAU) in 1974 the engineering educations has been based on Problem Based Learning (PBL). Within the engineering education skills...... project - due to time frame, the project and the variety of students involved. After the launch the project has been acknowledged from ESA top leadership as a very high quality student corner project. Jens Dalsgaard Nielsen Assoc Prof. PhD Msc EE Aalborg University Department of Control Engineering...

  2. Construction project management handbook.

    Science.gov (United States)

    2012-03-01

    The purpose of the FTA Construction Project Management Handbook is to provide guidelines for use by public transit agencies (Agen-cies) undertaking substantial construction projects, either for the first time or with little prior experience with cons...

  3. Small Satellite Transporter Project

    Data.gov (United States)

    National Aeronautics and Space Administration — The primary objective is to determine whether this small satellite transporter is capable of transporting at least four 6U CubeSats is possible for a given set of...

  4. Gulf Offshore Satellite Application Project

    Energy Technology Data Exchange (ETDEWEB)

    Biegert, E.K.; Berry, J.L.; Oakley, S.D. [Shell E and P Technology Co., Houston, TX (United States); Baker, R.N. [Amoco (United States); Mott, S. [Imagelinks (United States); Gelpi, C. [Xontech (United States); Mitchell, R. [Earth Satellite Corp., Washington, DC (United States)

    1998-12-31

    The Gulf Offshore Satellite Applications Project (GOSAP) was designed to evaluate remote sensing systems such as RADARSAT and SAR and their use in petroleum, marine and environmental industries. The project`s goal is to detect oil seeps and spills in the marine environment and to determine the influence of sea temperature, geological, geochemical and biological factors on natural seep rates. GOSAP and the RADARSAT Application Development and Research Opportunity (ADRO) program acquired the first RADARSAT images over a Gulf of Mexico test site and observed spills as well as natural oil slicks. Operational criteria for RADARSAT commercial products for these applications were also determined, and special processing problems were resolved.

  5. International Satellite Cloud Climatology Project (ISCCP)

    Data.gov (United States)

    National Aeronautics and Space Administration — International Satellite Cloud Climatology Project (ISCCP) focuses on the distribution and variation of cloud radiative properties to improve the understanding of the...

  6. Virtual Satellite Integration Environment Project

    Data.gov (United States)

    National Aeronautics and Space Administration — An integrated environment for rapid design studies of small satellite missions will be developed. This environment will be designed to streamline processes at the...

  7. Virtual Satellite Integration Environment Project

    Data.gov (United States)

    National Aeronautics and Space Administration — Advatech Pacific proposes to develop a Virtual Satellite Integration Environment (VSIE) for the NASA Ames Mission Design Center. The VSIE introduces into NASA...

  8. Processor Units Reduce Satellite Construction Costs

    Science.gov (United States)

    2014-01-01

    As part of the effort to build the Fast Affordable Science and Technology Satellite (FASTSAT), Marshall Space Flight Center developed a low-cost telemetry unit which is used to facilitate communication between a satellite and its receiving station. Huntsville, Alabama-based Orbital Telemetry Inc. has licensed the NASA technology and is offering to install the cost-cutting units on commercial satellites.

  9. Time Overrun in Construction Project

    Science.gov (United States)

    Othman, I.; Shafiq, Nasir; Nuruddin, M. F.

    2017-12-01

    Timely completion is the key criteria to achieve success in any project despite the industry. Unfortunately construction industry in Malaysia has been labelled as industry facing poor performance leading to failure in achieving effective time management. As the consequence most of the project face huge amount of time overrun. This study assesses the causes of construction projects time overrun in Malaysia using structured questionnaire survey. Each respondent is asked to assign a one-to-five rating for each of the 18 time factors identified from literature review. Out of the 50 questionnaires sent out, 33 were received back representing 68% of the response rate. Data received from the questionnaires were analysed and processed using the descriptive statistics procedures. Findings from the study revealed that design and documentation issues, project management and contract administration, ineffective project planning and scheduling, contractor’s site management, financial resource management were the major factors that cause the time overrun. This study is hoped to help the practitioners to implement the mitigation measure at planning stage in order to achieve successful construction projects.

  10. A proposed model for construction project management ...

    African Journals Online (AJOL)

    improve their management and leadership abilities, ensuring the successful execution of projects in the South African construction industry. Keywords: Communication skills and leadership model, construction project management, leadership, South African construction industry. Abstrak. Oneffektiewe kommunikasie en die ...

  11. Constructive use of holographic projections

    Energy Technology Data Exchange (ETDEWEB)

    Schroer, Bert [Centro Brasileiro de Pesquisas Fisicas (CBPF), Rio de Janeiro, RJ (Brazil); Institut fuer Theoretische Physik der FU, Berlin (Germany)

    2008-07-01

    Revisiting the old problem of existence of interacting models of QFT with new conceptual ideas and mathematical tools, one arrives at a novel view about the nature of QFT. The recent success of algebraic methods in establishing the existence of factorizing models suggests new directions for a more intrinsic constructive approach beyond Lagrangian quantization. Holographic projection simplifies certain properties of the bulk theory and hence is a promising new tool for these new attempts. (author)

  12. CONSTRUCTION MANAGER'S INFLUENCE ON PROJECT SUCCESS

    OpenAIRE

    LATORRE, V.

    2009-01-01

    Merged with duplicate record 10026.1/827 on 27.02.2017 by CS (TIS) Construction managers aim to deliver successful construction projects; however it is unclear how they perceive construction project success and how they influence that success. Focusing on the construction phase of the project, a Systems Conceptual Framework is induced from the literature review. In-depth interviews undertaken by 10 construction managers, whose experience accounts for over 130 construction pr...

  13. Construction project management handbook : September 2009.

    Science.gov (United States)

    2009-09-01

    The purpose of this Handbook is to provide guidelines for use by public transit agencies (Agencies) undertaking substantial construction : projects, either for the first time or with little prior experience with construction project management. It pr...

  14. Delay analysis in residental construction project

    OpenAIRE

    Kralj, Metka

    2007-01-01

    This final theses deals with the time analyse of construction project using delay calculation method. It begins with description of characteristics and sorts of constructions production. Further it deals with planning of the construction production, where it stress out the importance of quality planning and planning techniques. Moreover theses describes time analyse of construction project using construction delay computation method, which is being used on the case of two residental houses in...

  15. Hurricane Satellite (HURSAT) from International Satellite Cloud Climatology Project (ISCCP) B1, Version 6

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The Hurricane Satellite (HURSAT) from derived International Satellite Cloud Climatology Project (ISCCP) B1 observations of tropical cyclones worldwide. The B1 data...

  16. Effective Safety Management in Construction Project

    Science.gov (United States)

    Othman, I.; Shafiq, Nasir; Nuruddin, M. F.

    2017-12-01

    Effective safety management is one of the serious problems in the construction industry worldwide, especially in large-scale construction projects. There have been significant reductions in the number and the rate of injury over the last 20 years. Nevertheless, construction remains as one of the high risk industry. The purpose of this study is to examine safety management in the Malaysian construction industry, as well as to highlight the importance of construction safety management. The industry has contributed significantly to the economic growth of the country. However, when construction safety management is not implemented systematically, accidents will happen and this can affect the economic growth of the country. This study put the safety management in construction project as one of the important elements to project performance and success. The study emphasize on awareness and the factors that lead to the safety cases in construction project.

  17. Constructability issues on KyTC projects.

    Science.gov (United States)

    2003-07-01

    A successful constructibility review process for a transportation agency must follow an established methodology similar to value engineering. The process must be flexible and address the critical issues impacting transportation construction projects,...

  18. REPNET: project scheduling and workflow optimization for Construction Projects

    OpenAIRE

    Marco Alvise Bragadin; Kalle Kahkonen

    2013-01-01

    Project planning and control are core processes for construction management. In practice project planning is achieved by network - based techniques like Precedence Diagramming Method (PDM).Indeed many researchers and practitioners claims that networking techniques as such do not provide a suitable model for construction projects. Construction process modeling should incorporate for specific features of resource flows through project activities. So an improved resource scheduling method for co...

  19. Project 'VOLCANO': Electronics of tethered satellite system

    Science.gov (United States)

    Savich, N. A.

    The main goal of the 'VOLCANO' project developed jointly by the Institute of Radio Engineering and Electronics and space concern 'ENERGIA' is experimental investigation of the current-voltage characteristics of the 'Collector-Boom-Emitter' system simulating the long Tethered Satellite System (TSS) in the real space flight conditions on the transport ship 'PROGRESS'. These measurements will allow scientists to determine the attainable current values for different combinations of collectors and emitters (passive metallic sphere, thermocathode, hollow cathodes and show up some prospects of active TSS. The report is concerned with the concept, purpose and tasks of the project, the planned set up of the measurement equipment on the 'PROGRESS' ship and in the container extended on the deployable 100 m long boom end.

  20. Streamlined project closeout for construction at KYTC.

    Science.gov (United States)

    2017-09-01

    Project closeout is the period between the end of construction and when a contract is finalized. During closeout, resources are held in encumbered funds intended for the project and in the contractors bonding capacity. Although the Kentucky Transp...

  1. Adhesives and the ATS satellite. [construction of honeycomb panels

    Science.gov (United States)

    Hancock, F. E.

    1972-01-01

    Adhesives in the ATS satellite allow the designers to save weight, simplify design and fabrication and provide thermal and electrical conductivity or resistivity as required. The selections of adhesives are restricted to those few which can pass rigorous outgassing tests in order to avoid contaminating lenses and thermal control surfaces in space. An epoxy adhesive is used to construct the honeycomb panels which constitute most of the satellite's structure. General purpose epoxy adhesives hold doublers and standoffs in place and bond the truss to its fittings. Specialized adhesives include a high temperature resistant polyamide, a flexible polyurethane and filled epoxies which conduct heat or electricity.

  2. Client's constraining factors to construction project management ...

    African Journals Online (AJOL)

    This study analyzed client's related factors that constrain project management success of public and private sector construction in Nigeria. Issues that concern clients in any project can not be undermined as they are the owners and the initiators of project proposals. It is assumed that success, failure or abandonment of ...

  3. Educational Benefits From the AAU-cubesat Student Satellite Project

    DEFF Research Database (Denmark)

    Alminde, Lars

    2003-01-01

    In September 2001 Aalborg university started the AAU-cubesat project that reached it climax when the student built satellite was launched into space on the 30th of June 2003 on top of a former Russian ICBM. AAU-cubesat was among the first five satellites to be launched that are built within......-satellite designs will be given. In addition as the project has been carried through by students then the educational value will be addressed as well....

  4. Improvement of Construction Project Management Processes

    OpenAIRE

    Nazarko, J.

    2017-01-01

    The common denominator of the five papers published in the current edition of the Journal of Engineering, Project, and Production Management is the improvement of construction project management processes for effective use of resources. Execution of proper project management processes is widely recognized as a key success factor influencing likelihood of project success (Alleman, 2014). It is noticeable that four out of five papers in this issue of the Journal are authored or co-authored by I...

  5. Three Construction Projects with Wood Scraps

    Science.gov (United States)

    Levine, Elizabeth

    1977-01-01

    Wood, a natural material, appeals to children of all ages. Wood construction allows children the flexibility of moving parts of their work around until they are satisfied with the arrangement. Three projects are described. (Author/RK)

  6. REPNET: project scheduling and workflow optimization for Construction Projects

    Directory of Open Access Journals (Sweden)

    Marco Alvise Bragadin

    2013-10-01

    Full Text Available Project planning and control are core processes for construction management. In practice project planning is achieved by network - based techniques like Precedence Diagramming Method (PDM.Indeed many researchers and practitioners claims that networking techniques as such do not provide a suitable model for construction projects. Construction process modeling should incorporate for specific features of resource flows through project activities. So an improved resource scheduling method for construction is developed, called REPNET, based on a precedence network plotted on a resource–space chart and presented with a flow-line chart. The heuristics of REPNET are used to carry out resource timing while optimizing processes flows and resource usage. The method has been tested on a sample project.

  7. Researching wicked problems in a construction project

    DEFF Research Database (Denmark)

    Jacobsen, Peter Holm

    phases of a construction project – a process competition - to argue why I think it is important and valuable to reflect upon how researchers learn when she/he participate in social practices.My perspective on the researchers role is inspired by social practice theory such as theories of situated learning......Finding ones way through empirical research in a construction project can be a challenging affair. Reflections about the uncertainty that relates to the researchers work when he/she is collecting data and construction knowledge in empirical studies of construction projects, is an area that could...... to empirical research. I will argue that uncertainty is an important aspect of doing empirical research because the empirical research is a part of a situated learning process and that uncertain situations are a central part of conducting empirical research. I will use an example from my study of the early...

  8. Atmosphere aerosol satellite project Aerosol-UA

    Science.gov (United States)

    Milinevsky, Gennadi; Yatskiv, Yaroslav; Syniavskyi, Ivan; Bovchaliuk, Andrii; Degtyaryov, Oleksandr; Sosonkin, Mikhail; Mishchenko, Michael; Danylevsky, Vassyl; Ivanov, Yury; Oberemok, Yevgeny; Masley, Volodymyr; Rosenbush, Vera; Moskalev, Sergii

    2017-04-01

    channels of the MSIP are the intensity channels that serve to obtain images in eight spectral wavebands to retrieve the aerosol optical depth. The main feature of the each MSIP channel is the splitting of the image by a special prism-splitter to four images on the same CCD detector. In that way we can simultaneously measure four polarization components at 0°, 45°, 90° and 135° as images in each of three polarization channels. One of the special features of ScanPol/MSIP concept is calibration of the MSIP using ScanPol data in the same field-of-view with 1% expected polarization accuracy. The Aerosol-UA experiment is planned to be launched in 2020 at the new satellite platform YuzhSat developed in the Yuzhnoye Design Office. The GRASP algorithm (Dubovik et al. 2014, doi: 10.1117/2.1201408.005558) is planned for Aerosol-UA data processing and AERONET sun photometers observations for validation. Acknowledgements. The work was partly supported by the Special Complex Program for Space Research 2012-2016 of the National Academy of Sciences of Ukraine, by the project 16BF051-02 of the Taras Shevchenko National University of Kyiv, and by the grant of the State Fund for Fundamental Research, project F73/115-2016.

  9. Lean in Construction Projects : Is lean suitable for all construction projects?

    OpenAIRE

    Tomas, Lindholm

    2014-01-01

    Due to the low productivity growth in the construction industry, there are discussions about theories and tools that could support an increased productivity in construction projects. One such ‘theory’ or package of tools is lean. Lean has been used successfully for decades in the car manufacturing industry, Toyota for example, and in other industries as the shipbuilding industry. In the construction industry, the use of the word lean is not frequently used and construction projects could migh...

  10. Determinants of construction project success in India

    CERN Document Server

    Jha, Kumar Neeraj

    2013-01-01

    This study presents exploratory work and seeks to identify and evaluate the success and failure factors that could form a guideline for further study and to some extent help professionals to understand some critical aspects that impact project performance concerning construction in India. A total of 55 attributes affecting the performance of construction projects are analysed in terms of their level of influence on four key performance criteria – schedule, cost, quality, and no disputes – using a two-stage questionnaire survey. These attributes are then further analysed, interpreted and evaluated.   Based on the critical success factors obtained from the study, a neural network model-based predictive model for project performance has been developed. The performance prediction models have been derived for all four project performance criteria. Further, a hypothesis that ‘project success’ is influenced by ‘success traits’ has also been formulated. The hypothesized positive inter-relationships betwe...

  11. Micro Resistojet for Small Satellites Project

    Data.gov (United States)

    National Aeronautics and Space Administration — Micro-resistojets offer the best combination of simplicity, performance, wet system mass and power consumption for small satellites (<100kg, <50Watts)...

  12. Micro Resistojet for Small Satellites Project

    Data.gov (United States)

    National Aeronautics and Space Administration — Micro-resistojets offer an excellent combination of simplicity, performance and wet system mass for small satellites (<100 kg, <50 watts) requiring mN level...

  13. Femto-Satellite Sensor Node Demonstration Project

    Data.gov (United States)

    National Aeronautics and Space Administration — The key challenge for reducing a traditional satellite to such a small size is to remove the maximum possible functionality that is not critical for creating a...

  14. Enabling Technology for Small Satellite Launch Project

    Data.gov (United States)

    National Aeronautics and Space Administration — Access to space for Small Satellites is enabled by the use of excess launch capacity on existing launch vehicles. A range of sizes, form factors and masses need to...

  15. Enabling Technology for Small Satellite Launch Project

    Data.gov (United States)

    National Aeronautics and Space Administration — Access to space for Small Satellites is enabled by the use of excess launch capacity on existing launch vehicles. A range of sizes, form factors and masses of small...

  16. Small Satellite Transceiver for Launch Vehicles Project

    Data.gov (United States)

    National Aeronautics and Space Administration — NAL Research Corporation proposes to develop a small, light-weight, low-cost transceivers capable of establishing satellite communications links for telemetry and...

  17. Informal worker phenomenon in housing construction project

    Science.gov (United States)

    Wijayaningtyas, Maranatha; Sipan, Ibrahim; Lukiyanto, Kukuh

    2017-11-01

    The informal workers phenomenon on housing construction projects in Indonesia is different from workers in other sectors who would always request as permanent employees. Substantively, the informal workers are disinclined to be bound as permanent employees which different from the general labor paradigm. Hence, the objective of this study is to find out how the labour selection process, the factors that affected their performance, and the suitable wage system to achieve the target completion of housing construction project. The qualitative method is used to uncover and understand the meaning behind the phenomena (numina) of informal workers action and their influence on housing construction project which called phenomenological approach. Five informal workers and two project managers were selected as informants based on predetermined criteria with in-depth interviews. The results showed that the informal worker were more satisfied with the wage based on unit price while working in the housing construction project for the flexibility in working hours. In addition, the developer was also relieved because they only control the quality and the achievement of the project completion time which supported by informal worker leader. Therefore, these findings are beneficial for both of developer and government as policy maker to succeed the housing program in Indonesia.

  18. Improvement of Construction Project Management Processes

    Directory of Open Access Journals (Sweden)

    Nazarko, J.

    2017-07-01

    Full Text Available The common denominator of the five papers published in the current edition of the Journal of Engineering, Project, and Production Management is the improvement of construction project management processes for effective use of resources. Execution of proper project management processes is widely recognized as a key success factor influencing likelihood of project success (Alleman, 2014. It is noticeable that four out of five papers in this issue of the Journal are authored or co-authored by Iranian researchers from the same Institute but their conclusions bear importance that cannot be limited to the authors’ region.

  19. Miniature Reaction Wheel for Small Satellite Control Project

    Data.gov (United States)

    National Aeronautics and Space Administration — The overall goal of this project is to design, develop, demonstrate, and deliver a miniature, high torque, low-vibration reaction wheel for use on small satellites....

  20. Technology Management on Large Construction Projects

    DEFF Research Database (Denmark)

    Bonke, Sten

    The aim of this text is to discuss and to develop the concept of technology management in relation to the empirical field of construction projects. In the first of the two main sections central theories and their derived assertions concerning technology management criteria are summed up in a sche......The aim of this text is to discuss and to develop the concept of technology management in relation to the empirical field of construction projects. In the first of the two main sections central theories and their derived assertions concerning technology management criteria are summed up...

  1. Analyzing delay causes in Egyptian construction projects

    Directory of Open Access Journals (Sweden)

    Mohamed M. Marzouk

    2014-01-01

    Full Text Available Construction delays are common problems in civil engineering projects in Egypt. These problems occur frequently during project life-time leading to disputes and litigation. Therefore, it is essential to study and analyze causes of construction delays. This research presents a list of construction delay causes retrieved from literature. The feedback of construction experts was obtained through interviews. Subsequently, a questionnaire survey was prepared. The questionnaire survey was distributed to thirty-three construction experts who represent owners, consultants, and contractor’s organizations. Frequency Index, Severity Index, and Importance Index are calculated and according to the highest values of them the top ten delay causes of construction projects in Egypt are determined. A case study is analyzed and compared to the most important delay causes in the research. Statistical analysis is carried out using analysis of variance ANOVA method to test delay causes, obtained from the survey. The test results reveal good correlation between groups while there is significant difference between them for some delay causes and finally roadmap for prioritizing delay causes groups is presented.

  2. Analyzing delay causes in Egyptian construction projects.

    Science.gov (United States)

    Marzouk, Mohamed M; El-Rasas, Tarek I

    2014-01-01

    Construction delays are common problems in civil engineering projects in Egypt. These problems occur frequently during project life-time leading to disputes and litigation. Therefore, it is essential to study and analyze causes of construction delays. This research presents a list of construction delay causes retrieved from literature. The feedback of construction experts was obtained through interviews. Subsequently, a questionnaire survey was prepared. The questionnaire survey was distributed to thirty-three construction experts who represent owners, consultants, and contractor's organizations. Frequency Index, Severity Index, and Importance Index are calculated and according to the highest values of them the top ten delay causes of construction projects in Egypt are determined. A case study is analyzed and compared to the most important delay causes in the research. Statistical analysis is carried out using analysis of variance ANOVA method to test delay causes, obtained from the survey. The test results reveal good correlation between groups while there is significant difference between them for some delay causes and finally roadmap for prioritizing delay causes groups is presented.

  3. Educational Benefits from the AAU-Cubesat Student Satellite Project

    DEFF Research Database (Denmark)

    Alminde, Lars

    2003-01-01

    In September 2001 Aalborg university started the AAU-cubesat project that reached it climax when the student built satellite was launched into space on the 30th of June 2003 on top of a former Russian ICBM. AAU-cubesat was among the first five satellites to be launched that are built within the c...... on pico-satellite designs will be given. In addition as the project has been carried through by students then the educational value will be addressed as well....

  4. Housing project management: concepts of sustainable construction

    Directory of Open Access Journals (Sweden)

    Leila Chagas Florim

    2010-05-01

    Full Text Available The aim of this paper is to present an exploratory research on the benefits of eco-efficient construction systems. Awareness of the limitation of natural resources and of the environmental deterioration promoted by civil construction has given rise to concern, mostly due to the housing deficit of 5,4 million new dwellings. The environmental issue closely linked to business management is a matter of survival in a highly competitive market. In broad terms, it is a contribution to the sustainability of the planet, and to the preservation of its eco-systems and renovation cycles. This study proposes criteria for housing projects concerned with sustainable construction.

  5. client's constraining factors to construction project management ...

    African Journals Online (AJOL)

    MANAGEMENT SUCCESS IN NIGERIA: A SYSTEMS ANALYTICAL APPROACH. NWACHUKWU, C.C ... multiplier effect on the overall economic growth of the nation. The construction of Imo State secretariat by ... finance for the project and prompt payment for work executed; clients influence in selection of incompetent and ...

  6. Satellite power system. Concept Development and Evaluation Program, Volume 6: construction and operations

    Energy Technology Data Exchange (ETDEWEB)

    Benson, H.; Jenkins, L.M.

    1981-04-01

    The construction, operation, and maintenance requirements for a solar power satellite, including the space and ground systems, are reviewed. The basic construction guidelines are explained, and construction location options are discussed. The space construction tasks, equipment, and base configurations are discussed together with the operations required to place a solar power satellite in geosynchronous orbit. A rectenna construction technique is explained, and operation with the grid is defined. Maintenance requirements are summarized for the entire system. Key technology issues required for solar power satellite construction operations are defined.

  7. Tailoring Systems Engineering Projects for Small Satellite Missions

    Science.gov (United States)

    Horan, Stephen; Belvin, Keith

    2013-01-01

    NASA maintains excellence in its spaceflight systems by utilizing rigorous engineering processes based on over 50 years of experience. The NASA systems engineering process for flight projects described in NPR 7120.5E was initially developed for major flight projects. The design and development of low-cost small satellite systems does not entail the financial and risk consequences traditionally associated with spaceflight projects. Consequently, an approach is offered to tailoring of the processes such that the small satellite missions will benefit from the engineering rigor without overly burdensome overhead. In this paper we will outline the approaches to tailoring the standard processes for these small missions and describe how it will be applied in a proposed small satellite mission.

  8. Direct/community broadcast projects using space satellites

    Science.gov (United States)

    Frutkin, A. W.

    1975-01-01

    A review is presented of direct/community broadcast projects which are currently in preparation in India, Canada, and Japan. It is shown that the satellite broadcast experiments involved are conducted for practical domestic reasons. The broadcast activities in all three projects will not reach other countries' TV receivers unless those countries take deliberate steps to enable themselves to receive such broadcasts. It is pointed out that for technological reasons problems of intrusion and interference connected with the use of satellites in broadcast operations may be much easier to handle than similar problems related to conventional radio broadcasting.

  9. Project Leadership and Quality Performance of Construction Projects

    Directory of Open Access Journals (Sweden)

    SPG Buba

    2017-05-01

    Full Text Available Background: The construction industry in Nigeria, is pigeonholed by poor quality of construction products as a result of the inherent corruption in the country. Lack of purposeful leadership and inappropriate choice of leadership styles in the industry have been attributed to project failure. Abandoned and failed projects are more predominant in the public sector which litters every corner of the country. Objectives: The objective of this paper is to assess the impact of leadership styles on quality performance criteria of public projects in Nigeria. Methodology: A total of 43 questionnaires were distributed to 3 key groups of respondents (Quantity Surveyors, Builders, and Architects who are project managers in Nigeria. Descriptive and Inferential statistics were used to analyse the data using the Statistical Package for Social Sciences (SPSS. Likert Scale was used to measure the independent variables (leadership style: facilitative, coaching, delegating and directing; and the level of achievement of projects based on the dependent variables (quality and function performance criteria which are: achieving highest aesthetic quality; and functional building that fits its purpose. Findings: The study revealed that Directing is the major leadership style used by project managers in Nigeria. Amongst the leadership styles which has the most impact on quality performance indicators is also directing which has the most relative influence on achieving highest aesthetic quality and functional building that fits its purpose. Conclusion/Recommendation/Way forward: The underlying relationship between Directing leadership styles and the performance criteria of achieving highest aesthetic quality and functional building that fits its purpose will be beneficial to the Nigerian construction environment.

  10. Decision problems in management of construction projects

    Science.gov (United States)

    Szafranko, E.

    2017-10-01

    In a construction business, one must oftentimes make decisions during all stages of a building process, from planning a new construction project through its execution to the stage of using a ready structure. As a rule, the decision making process is made more complicated due to certain conditions specific for civil engineering. With such diverse decision situations, it is recommended to apply various decision making support methods. Both, literature and hands-on experience suggest several methods based on analytical and computational procedures, some less and some more complex. This article presents the methods which can be helpful in supporting decision making processes in the management of civil engineering projects. These are multi-criteria methods, such as MCE, AHP or indicator methods. Because the methods have different advantages and disadvantages, whereas decision situations have their own specific nature, a brief summary of the methods alongside some recommendations regarding their practical applications has been given at the end of the paper. The main aim of this article is to review the methods of decision support and their analysis for possible use in the construction industry.

  11. Delays in Building Construction Projects in Ghana

    Directory of Open Access Journals (Sweden)

    Adwoa B Agyakwah-Baah

    2010-07-01

    Full Text Available This study investigates the causes of delay of building construction projects in Ghana to determine the most important according to the key project participants; clients, consultants, and contractors. Thirty-two possible causes of delay were identified from the literature and semi-structured interviews of 15 key players in the implementation process. These delay factors were further categorised into nine major groups. The list of delay causes was subjected to a questionnaire survey for the identification of the most important causes of delay. The field survey included 130 respondents made up of 39 contractors, 37 clients and 54 consultants. The relative importance of the individual causes and the groups were calculated and ranked by their relative importance index. The overall results of the study indicate that the respondents generally agree that financial group factors ranked highest among the major factors causing delay in construction projects in Ghana. The financial group factors were delay in honouring payment certificates, difficulty in accessing credit and fluctuation in prices. Materials group factors are second followed by scheduling and controlling factors.

  12. Commutative algebra constructive methods finite projective modules

    CERN Document Server

    Lombardi, Henri

    2015-01-01

    Translated from the popular French edition, this book offers a detailed introduction to various basic concepts, methods, principles, and results of commutative algebra. It takes a constructive viewpoint in commutative algebra and studies algorithmic approaches alongside several abstract classical theories. Indeed, it revisits these traditional topics with a new and simplifying manner, making the subject both accessible and innovative. The algorithmic aspects of such naturally abstract topics as Galois theory, Dedekind rings, Prüfer rings, finitely generated projective modules, dimension theory of commutative rings, and others in the current treatise, are all analysed in the spirit of the great developers of constructive algebra in the nineteenth century. This updated and revised edition contains over 350 well-arranged exercises, together with their helpful hints for solution. A basic knowledge of linear algebra, group theory, elementary number theory as well as the fundamentals of ring and module theory is r...

  13. TRIP RATES FOR CONDOMINIUM CONSTRUCTION PROJECT

    Directory of Open Access Journals (Sweden)

    Wirach Hirun

    2015-01-01

    Full Text Available The number of large scale condominium construction projects had dramatically increased in Bangkok. Many projects had occurred in either densely populated areas or in central business districts, where traffic conditions were usually highly congested. To prevent traffic problems, a traffic impact study must be prepared and submitted for review by concerned public authorities. Unit trip generation rates were important data in traffic impact analysis. Without accurate unit trip generation rates, public agencies could not obtain accurate information on the traffic that will be generated. This study aimed to study trip rates and the factors affecting them for condominium construction project in Bangkok. The data were collected from 30 condominium construction sites located in 15 districts of Bangkok. The analysis used the linear regression method and was divided into three cases: 1 trip rates for all vehicles, 2 trip rates for classified vehicles, and 3 trip rates for all types of condominium. All case analyses considered weekdays, Saturday, and Sunday. The results found that trip rates related to the number of dwellings in the condominium. The trip rates for all vehicle types on weekdays, Saturday, and Sunday were 10.636, 4.647, and 9.294 vehicles per 100 dwelling units per day respectively. The trip rates for six-wheeled and ten-wheeled trucks on weekdays, Saturday, and Sunday were 2.046, 0.975, and 0.575 vehicles per 100 dwelling units per day respectively. The trip rate for four-wheeled trucks and passenger cars on weekdays was 1.960. Regarding condominium types, the trip rate for low rise condominiums for all vehicle types on weekdays was 5.315 while the trip rates for high rise condominiums for weekdays, Saturday, and Sunday were 3.965, 2.667, and 1.261 respectively.

  14. Science operations management. [with Infrared Astronomy Satellite project

    Science.gov (United States)

    Squibb, G. F.

    1984-01-01

    The operation teams engaged in the IR Astronomical Satellite (IRAS) project included scientists from the IRAS International Science Team. The detailed involvement of these scientists in the design, testing, validation, and operations phases of the IRAS mission contributed to the success of this project. The Project Management Group spent a substantial amount of time discussing science-related issues, because science team coleaders were members from the outset. A single scientific point-of-contact for the Management Group enhanced the depth and continuity of agreement reached in decision-making.

  15. A proposed model for construction project management ...

    African Journals Online (AJOL)

    A literature review on project management communication, project communication skills, applications of project communication and project management and leadership communication was done to develop a quantitative questionnaire for testing the importance of project management communication skills and applications ...

  16. identifying the critical causes of conflict in construction projects

    African Journals Online (AJOL)

    user

    2016-04-02

    Apr 2, 2016 ... Completing construction projects entails inputs from various professional disciplines; this makes projects prone to conflicts. It has been acknowledged that management of conflict is crucial to improving project performance. Thus, understanding the causes of conflicts in construction project will ease the ...

  17. identifying the critical causes of conflict in construction projects in ...

    African Journals Online (AJOL)

    Completing construction projects entails inputs from various professional disciplines; this makes projects prone to conflicts. It has been acknowledged that management of conflict is crucial to improving project performance. Thus, understanding the causes of conflicts in construction project will ease the process of conflict ...

  18. Distributing Resources in a Construction Project

    DEFF Research Database (Denmark)

    Axel, Erik

    2015-01-01

    In the present paper the status of theories are discussed. It will be based on the fact that our understanding comes out of our common activity, and we will take point of departure in some empirical material from a construction project. We shall explore a conception of conflictual cooperation......, which is understood as participants cooperating about a common contradictory cause, having each their perspective on the common cause, and therefore constantly confronted with the possibility of reorganization and conflict. To understand the ongoing processes a conception of procedures is introduced......, seen as complexly interwoven activities. They are constituted by reciprocally reorganized, anticipated results, acquisition of resources and arrangements of activities and things therein. It will be argued that the constant possibility of interwoven change in this process forces us to accept...

  19. New Chinese satellite-ground EQ monitoring project

    Science.gov (United States)

    Shen, X.; Zhang, X.; Hong, S.; Chen, L.; Jing, F.; Liu, J.; Huang, J.; Working TeamEarthquake-related Satellite Missions, CEA

    2011-12-01

    monitoring. Based on the seismo-electromagnetic satellite and virtual earthquake-related satellite system, a application system for earthquake monitoring and early warning is promoted and refined by integrated observation of high resolution surface deformation, infrared anomalies, gravity, electro-magnetism, and geochemical fields covering the whole country and adjacent regions both from ground and space.. A integrated system for earthquake monitoring, analysis, and prediction will be constructed.

  20. Smart optimization for mega construction projects using artificial intelligence

    OpenAIRE

    Aziz, Remon Fayek; Hafez, Sherif Mohamed; Abuel-Magd, Yasser Ragab

    2014-01-01

    During practicing the planning process, scheduling and controlling mega construction projects, there are varieties of procedures and methods that should be taken into consideration during project life cycle. Accordingly, it is important to consider the different modes that may be selected for an activity in the scheduling, for controlling mega construction projects. Critical Path Method “CPM” is useful for scheduling, controlling and improving mega construction projects; hence this paper pres...

  1. Analytical technique for satellite projected cross-sectional area calculation

    Science.gov (United States)

    Ben-Yaacov, Ohad; Edlerman, Eviatar; Gurfil, Pini

    2015-07-01

    Calculating the projected cross-sectional area (PCSA) of a satellite along a given direction is essential for implementing attitude control modes such as Sun pointing or minimum-drag. The PCSA may also be required for estimating the forces and torques induced by atmospheric drag and solar radiation pressure. This paper develops a new analytical method for calculating the PCSA, the concomitant torques and the satellite exposed surface area, based on the theory of convex polygons. A scheme for approximating the outer surface of any satellite by polygons is developed. Then, a methodology for calculating the projections of the polygons along a given vector is employed. The methodology also accounts for overlaps among projections, and is capable of providing the true PCSA in a computationally-efficient manner. Using the Space Autonomous Mission for Swarming and Geo-locating Nanosatellites mechanical model, it is shown that the new analytical method yields accurate results, which are similar to results obtained from alternative numerical tools.

  2. causes of conflicts in construction projects in nigeria

    African Journals Online (AJOL)

    user

    construction industry.The aim of the present study is to identify and assess the causes of conflicts in construction projects in Nigeria, based on the perspective of two project stakeholders (consultant and contractors). ... conflicts in Nigerian construction industry? What is .... higher than 4.0 those with 4.0-3.0 mean scores were.

  3. Leveraging Text Content for Management of Construction Project Documents

    Science.gov (United States)

    Alqady, Mohammed

    2012-01-01

    The construction industry is a knowledge intensive industry. Thousands of documents are generated by construction projects. Documents, as information carriers, must be managed effectively to ensure successful project management. The fact that a single project can produce thousands of documents and that a lot of the documents are generated in a…

  4. Experience and Methodology gained from 4 years of Student Satellite Projects

    DEFF Research Database (Denmark)

    Alminde, Lars; Bisgaard, Morten; Bhanderi, Dan

    2005-01-01

    The AAU Cubesat student satellite project at Aalborg University was initiated in September 2001 and led to the launch of the satellite on the 30th of June 2003 with a “Rockot” rocket from Plesetsk in Russia. The satellite survived three months in orbit and based on the experiences gained the next...... student satellite project was commenced called AAUSAT II which is due for launch early 2006. This paper presents the experiences gained and lessons learned from the work with student satellite projects at Aalborg University as well as the methodology used to manage these projects. First an introduction...... to the concept of student satellite projects is given and the two student satellite projects are introduced. Then an introduction and description of the Problem Based Learning concept used at Aalborg University is given and advantages of applying it to these projects are discussed. The benets of student...

  5. Modelling the construction projects using plans of work

    OpenAIRE

    Hughes, Will

    1991-01-01

    An overview of organization in the construction industry is identified from plans of work published in the UK. This provides a basis for identifying the essential steps through which any construction project must pass. It is shown that all construction projects pass through a set of stages of work, consisting of inception, feasibility, scheme design, detail design, contract formation, construction and commissioning. Although there may be changes to the sequence and importance of these stages,...

  6. Quality Management System at Construction Project: A Questionnaire Survey

    National Research Council Canada - National Science Library

    P.P.Mane; J.R.Patil

    2015-01-01

    .... The quality management has to provide the environment within which related tools, techniques and procedures can be deployed effectively leading to operational success for a construction project...

  7. Risk management in public sector construction projects: Case ...

    African Journals Online (AJOL)

    . Peer reviewed and revised October 2016. Abstract. Construction projects are facing problems that impede their expected performance. Time, cost, quality, and competition limitations place constraints on projects. These challenges require.

  8. Evaluation of construction strategies for PCC pavement rehabilitation projects.

    Science.gov (United States)

    2010-09-30

    This study investigated project management level solutions to optimizing resources, minimizing costs : (including user costs) and time for PCC pavement rehabilitation projects. This study extensively : evaluated the applicability of the Construction ...

  9. Project and Production Management in the Construction Industry

    OpenAIRE

    Chien-Ho Ko

    2012-01-01

    In this issue, the Journal of Engineering, Project, and Production Management (EPPM-Journal) presents five original research papers related to project and production management in the construction industry from authors in Africa, Asia, and Europe.

  10. Involved in a construction project? These suggestions may help.

    Science.gov (United States)

    Junikiewicz, J J

    1986-04-01

    Hospital materials managers are often key members of a new construction or major renovation project management team. Those involved in such projects frequently find the experience traumatizing because they aren't prepared for the unexpected demands it puts on them. To minimize the mistakes and frustration associated with a construction or renovation project, the author provides a checklist of issues materials managers need to address when preparing for a project.

  11. Project control integrating cost and schedule in construction

    CERN Document Server

    Del Pico, Wayne J

    2013-01-01

    The key to successful project control is the fusing of cost to schedule whereby the management of one helps to manage the other. Project Control: Integrating Cost and Schedule in Construction explores the reasons behind and the methodologies for proper planning, monitoring, and controlling both project costs and schedule. Filling a current void the topic of project control applied to the construction industry, it is essential reading for students and professionals alike.

  12. Exploitation and Benefits of BIM in Construction Project Management

    Science.gov (United States)

    Mesároš, Peter; Mandičák, Tomáš

    2017-10-01

    BIM is increasingly getting into the awareness in construction industry. BIM is the process of creating and data managing of the building during its life cycle. BIM became a part of management tools in modern construction companies. Construction projects have a number of participants. It means difficulty process of construction project management and a serious requirement for processing the huge amount of information including design, construction, time and cost parameters, economic efficiency and sustainability. Progressive information and communication technologies support cost management and management of construction project. One of them is Building Information Modelling. Aim of the paper is to examine the impact of BIM exploitation and benefits on construction project management in Slovak companies.

  13. The application of project management in construction projects ...

    African Journals Online (AJOL)

    Project management is critical for successful project development. A crucial responsibility of the project manager is ensuring that the client is certified and the scope of work is of high quality, within the agreed budget and time frame. In some way, project financing is completed from the time of project conception. Indeed ...

  14. Radioactive materials in construction projects; Radioaktive Stoffe bei Baumassnahmen

    Energy Technology Data Exchange (ETDEWEB)

    Herrmann, Ralf; Ohlendorf, Frank [Baugrund Dresden IGmbH, Dresden (Germany); Kaltz, Andrea Christine [Saechsisches Landesamt fuer Umwelt, Landwirtschaft und Geologie, Dresden (Germany). Ref. 53 (Strahlenschutz)

    2014-07-01

    Till 1990 residues often of the former uranium mining were partly used as building material for road construction, terrain compensation and house construction in Saxony. These recommendations for action are addressed to applicants, planners and building constructors in the engineering and construction sector. It provides information for planning, preliminary investigations, applications, construction supervision related to radiation protection measures and documentation of construction projects where radioactive materials are expected.

  15. Delivering construction projects using innovative building technologies

    CSIR Research Space (South Africa)

    Ampofo-Anti, Naalamkai

    2017-07-01

    Full Text Available This paper presents a project delivery model developed for use by public sector clients tasked with using innovative building technologies (IBTs) in lieu of conventional building technologies (CBTs) in the delivery of social infrastructure projects....

  16. Delay factors in failed construction projects in southwestern Nigeria ...

    African Journals Online (AJOL)

    This study was carried out with a view to showing the contribution of delay factors in the overall consideration of failed construction projects in south western Nigeria. This is considered necessary because the traditional view of construction project failure as consisting mainly of structural or functional failures tends to excuse ...

  17. Effects of Project-Related Factors on Construction Labour ...

    African Journals Online (AJOL)

    Construction labour productivity has continued to be researched into because of its importance in nations' economy. This study assesses and compares the relative effects of project-related factors on construction labour productivity in Bayelsa State of Nigeria from the perspectives of building craftsmen and project ...

  18. Adoption and Use of Interorganizational ICT in a Construction Project

    NARCIS (Netherlands)

    Adriaanse, Adriaan Maria; Voordijk, Johannes T.; Dewulf, Geert P.M.R.

    2010-01-01

    The objective of this research is to explain why actors are not using interorganizational information and communication technology (ICT) in construction projects in the intended way, by determining the mechanisms that influence the way actors use this ICT over time during a construction project.

  19. Umatilla Satellite and Release Sites Project : Final Conceptual Design Report.

    Energy Technology Data Exchange (ETDEWEB)

    Montgomery, James M.

    1992-03-01

    This report presents the results of site analysis for the Umatilla Satellite and Release Sites Project. The purpose of this project is to provide engineering services for the siting and conceptual design of satellite and release facilities for the Umatilla Basin hatchery program. The Umatilla Basin hatchery program consists of artificial production facilities for salmon and steelhead to enhance production in the Umatilla River as defined in the Umatilla master plan approved in 1989 by the Northwest Power Planning Council. Facilities identified in the master plan include adult salmon broodstock holding and spawning facilities, facilities for recovery, acclimation, and/or extended rearing of salmon juveniles, and development of river sites for release of hatchery salmon and steelhead. The historic and current distribution of fall chinook, summer chinook, and coho salmon and steelhead trout was summarized for the Umatilla River basin. Current and future production and release objectives were reviewed. Twenty seven sites were evaluated for the potential development of facilities. Engineering and environmental attributes of the sites were evaluated and compared to facility requirements for water and space. Site screening was conducted to identify the sites with the most potential for facility development. Alternative sites were selected for conceptual design of each facility type. A proposed program for adult holding facilities, final rearing/acclimation, and direct release facilities was developed.

  20. Expansive Learning in Construction Projects - a Contradiction in terms?

    DEFF Research Database (Denmark)

    Klitgaard, Anne; Nissen, Søren Bülow; Beck, Frederikke

    2016-01-01

    This research is a preliminary study performed as part of a primary research into expansive learning in interorganizational network set up to solve a construction project. The construction industry has long had issues about productivity, which can be an indication of lack of learning. A case study...... acquisition and participation but not by expansive learning. The construction industry needs to accept that the learning generated from projects will be limited to learning by acquisition and participation. The interorganizational network cannot facilitate expansive learning while working on object......-fixed projects. Research in construction management fails to generate and document knowledge because of the limitations of case studies....

  1. Assuring health and safety performance on construction projects ...

    African Journals Online (AJOL)

    This article presents findings from an investigation conducted in Botswana and South Africa on how construction clients could influence health and safety (H&S) performance on construction projects. The continued poor state of construction H&S and the inability of designers and contractors to influence an industry-wide ...

  2. MONITORING OF CONSTRUCTION PROJECT THROUGH BUFFER MANAGEMENT

    OpenAIRE

    Ms. Arti Bhan*1 & Prof. Ashish P. Waghmare2

    2017-01-01

    Critical Chain Project Management is an effective method over Critical Path Method (CPM) for scheduling and monitoring the progress of a project. CPM leads to ineffective scheduling due to overestimation of duration and increases the overall project duration. The task estimates in CPM are based on guess work whereas CCPM reduces the duration of task to 50% to that of its original duration as uses the remaining 50% duration as buffer to protect the activity against delays. Also the availabilit...

  3. Satellite-based monitoring of air quality within QUITSAT project

    Science.gov (United States)

    di Nicolantonio, W.

    2009-04-01

    Satellite remote sensing of both trace gas constituents and Particulate Matter (PM) can be profitably exploited in Air Quality (AQ) assessment. The actual potential role of satellite observations is here highlighted combined with regional meteorological and Chemical Transport Models (CTM) in the context of air quality monitoring as experienced in QUITSAT Project over Northern Italy (from 43:09 to 46:39 N, from 6:19 to 14:23 E). QUITSAT (2006-2009) is a pilot project funded by the Italian Space Agency (ASI) in the framework of its institutional priorities for the Natural and Technological disaster management programme. AQ monitoring is in general based on local ground measurements. In recent years, this issue has been inserted in a more extended frame, in which CTM have joined ground-based data and satellite observations to provide a better characterization of AQ monitoring, forecasting and planning on a regional scale. In particular, two satellite-based products arisen from analysis methodologies developed in QUITSAT and relative to significant pollutants as PM2.5 and NO2 are presented within this work. The MODIS sensors capability (Terra and Aqua/NASA platforms) to retrieve Aerosol Optical Properties (AOP) has been used in a semi-empirical approach to estimate PM2.5 content at the ground. At first, PM2.5 concentration sampled in several sites over Northern Italy are employed in order to infer AOP to PM conversion parameters. A spatial-temporal coincidence procedure has been performed amongst EO and non-EO data. To take into account the aerosol columnar dispersion and the AOP dependence on the relative humidity (RH) meteorological fields (Planetary Boundary Layer and RH) simulated by MM5 are considered. MODIS aerosol level 2 products (MOD04 and MYD04 collection 5, 10x10 km2 spatial resolution) and PM2.5 samplings performed by Regional Environmental Agencies (ARPA Emilia Romagna and ARPA Lombardia) and carried out over further 6 measurements sites (located in Milano

  4. Effect of bond administration on construction project delivery

    Directory of Open Access Journals (Sweden)

    Oke Ayodeji Emmanuel

    2016-12-01

    Full Text Available Construction bond administration involves management of bond issues from inception of obtaining bond from guarantor to the point of release of contractor by the client. This process has posted a lot of challenges to construction stakeholders; it is therefore, necessary to examine the relationship between bond administration and project success. Archival data of completed bonded building projects were gathered through a pro forma developed for this purpose. Using Pearson product moment of correlation, it was revealed that the cost of securing a construction bond has a positive and significant effect on the initial and final costs of the project, while the number of days needed to secure a construction bond has no significant effect on the initial and final durations of the construction project. In order to establish the relationship between project delivery indices of cost and time and the construction bond administration variables, iteration of linear regression was adopted to arrive at the best-fit equation. Factors affecting the cost of securing construction bonds from guarantors should be identified and given adequate attention by construction stakeholders in order to minimize the effect of construction bond administration on project delivery.

  5. Benchmarking Sustainability Practices Use throughout Industrial Construction Project Delivery

    Directory of Open Access Journals (Sweden)

    Sungmin Yun

    2017-06-01

    Full Text Available Despite the efforts for sustainability studies in building and infrastructure construction, the sustainability issues in industrial construction remain understudied. Further, few studies evaluate sustainability and benchmark sustainability issues in industrial construction from a management perspective. This study presents a phase-based benchmarking framework for evaluating sustainability practices use focusing on industrial facilities project. Based on the framework, this study quantifies and assesses sustainability practices use, and further sorts the results by project phase and major project characteristics, including project type, project nature, and project delivery method. The results show that sustainability practices were implemented higher in the construction and startup phases relative to other phases, with a very broad range. An assessment by project type and project nature showed significant differences in sustainability practices use, but no significant difference in practices use by project delivery method. This study contributes to providing a benchmarking method for sustainability practices in industrial facilities projects at the project phase level. This study also discusses and provides an application of phase-based benchmarking for sustainability in industrial construction.

  6. Constructing new working practices through project narratives

    NARCIS (Netherlands)

    Veenswijk, M.B.; Berendse, M.

    2008-01-01

    In this article we focus on the (internal and external) dynamics of New Public Management (NPM) in the daily life of project management. We concentrate on the ways NPM concepts work out in the realities of project actors. Based on recent research within the Dutch infrastructure sector, we analyse

  7. Housing project management: concepts of sustainable construction

    OpenAIRE

    Leila Chagas Florim; Osvaldo Luiz Gonçalves Quelhas

    2010-01-01

    The aim of this paper is to present an exploratory research on the benefits of eco-efficient construction systems. Awareness of the limitation of natural resources and of the environmental deterioration promoted by civil construction has given rise to concern, mostly due to the housing deficit of 5,4 million new dwellings. The environmental issue closely linked to business management is a matter of survival in a highly competitive market. In broad terms, it is a contribution to the sustainabi...

  8. Construction status of the J-PARC project

    CERN Document Server

    Nagamiya, S

    2005-01-01

    From Japanese fiscal year JFY2001, which started on April 1, 2001, a new accelerator project to provide high-intensity proton beams proceeded into its construction phase. This project, which is now called the J-PARC (Japan Proton Accelerator Research Complex) project, is in progress under a cooperation of two institutes, KEK and JAERI. We set a goal to achieve 1MW proton beams at 3GeV and 0.75MW beams at 50GeV. The construction period is 7 years, with anticipated first beams in the spring of 2008. In this article I will describe the project itself and the present status of the project.

  9. Low-cost satellite mechanical design and construction

    Science.gov (United States)

    Boisjolie-Gair, Nathaniel; Straub, Jeremy

    2017-05-01

    This paper presents a discussion of techniques for low-cost design and construction of a CubeSat mechanical structure that can serve as a basis for academic programs and a starting point for government, military and commercial large-scale sensing networks, where the cost of each node must be minimized to facilitate system affordability and lower the cost and associated risk of losing any node. Spacecraft Design plays a large role in manufacturability. An intentionally simplified mechanical design is presented which reduces machining costs, as compared to more intricate designs that were considered. Several fabrication approaches are evaluated relative to the low-cost goal.

  10. The contributions of construction material waste to project cost ...

    African Journals Online (AJOL)

    The investigation included ongoing building construction projects within Abuja, Nigeria, from which a sample of 31 public and private projects was purposefully selected (project value of ₦1.6 billion Naira and above). The data for this research were sourced from the field investigation (measurement of the volume of material ...

  11. The application of micro UAV in construction project

    Science.gov (United States)

    Kaamin, Masiri; Razali, Siti Nooraiin Mohd; Ahmad, Nor Farah Atiqah; Bukari, Saifullizan Mohd; Ngadiman, Norhayati; Kadir, Aslila Abd; Hamid, Nor Baizura

    2017-10-01

    In every outstanding construction project, there is definitely have an effective construction management. Construction management allows a construction project to be implemented according to plan. Every construction project must have a progress development works that is usually created by the site engineer. Documenting the progress of works is one of the requirements in construction management. In a progress report it is necessarily have a visual image as an evidence. The conventional method used for photographing on the construction site is by using common digital camera which is has few setback comparing to Micro Unmanned Aerial Vehicles (UAV). Besides, site engineer always have a current issues involving limitation of monitoring on high reach point and entire view of the construction site. The purpose of this paper is to provide a concise review of Micro UAV technology in monitoring the progress on construction site through visualization approach. The aims of this study are to replace the conventional method of photographing on construction site using Micro UAV which can portray the whole view of the building, especially on high reach point and allows to produce better images, videos and 3D model and also facilitating site engineer to monitor works in progress. The Micro UAV was flown around the building construction according to the Ground Control Points (GCPs) to capture images and record videos. The images taken from Micro UAV have been processed generate 3D model and were analysed to visualize the building construction as well as monitoring the construction progress work and provides immediate reliable data for project estimation. It has been proven that by using Micro UAV, a better images and videos can give a better overview of the construction site and monitor any defects on high reach point building structures. Not to be forgotten, with Micro UAV the construction site progress is more efficiently tracked and kept on the schedule.

  12. Architect-School Client Conflicts: Project Construction.

    Science.gov (United States)

    Day, C. William

    1985-01-01

    Five major sources of construction disputes between architects and school clients are (1) errors, defects, or omissions in the contract documents; (2) cost-related problems; (3) changed conditions; (4) consumer reaction; and (5) interpersonal relationships. A clear understanding of each party's role is necessary to eliminate these conflicts. (MLF)

  13. Leadership style practices of construction and project managers in the South African construction industry

    OpenAIRE

    2015-01-01

    M.Tech. (Construction Management) The construction industry is an important sector in the development and economic progression of South Africa. Moreover, projects in the South African construction industry involve different individuals and organizations that collaborate to achieve a specific task at a specific time. Hence, leadership is essential in any construction organization to achieve organizational goals and to promote individual professional achievement in the industry. This study e...

  14. TransCom satellite intercomparison experiment: construction of a bias corrected atmospheric CO2 climatology

    NARCIS (Netherlands)

    Saito, R.; Houweling, S.; Patra, P. K.; Belikov, D.; Lokupitiya, R.; Niwa, Y.; Chevallier, F.; Saeki, T.; Maksyutov, S.

    2011-01-01

    A model-based three-dimensional (3-D) climatology of atmospheric CO2 concentrations has been constructed for the analysis of satellite observations, as a priori information in retrieval calculations, and for preliminary evaluation of remote sensing products. The locations of ground-based instruments

  15. Exploring delay causes of road construction projects in

    Directory of Open Access Journals (Sweden)

    Remon F. Aziz

    2016-06-01

    Full Text Available Construction delays are a common phenomenon in civil engineering projects in Egypt including road construction projects. Therefore, it is essential to study and analyze causes of road construction delays. This paper studied a list of construction delay causes gathered from literature having different types of construction, different countries, different periods and different numbers of delay causes and delay groups. A questionnaire and personal interviews have formed the basis of this paper listing 293 delay causes. The questionnaire survey was distributed to 500 construction participants and 389 were received who represent consultants, contractors and site/design engineers excluding the owner representing the government in road projects as one party only. Relative Importance Index (RII is calculated and according to the highest values the top twenty and the least twenty delay causes of construction projects in Egypt are determined. A case study is analyzed and compared to the most important delay causes in the paper. The test results reveal good correlation of causes and groups between contractors and site/design engineers and between consultants and site design engineers and a somewhat low correlation between contractors and consultants. So there are no root causes that can be taking for granted to be most or least effective delay causes. Proposed model for predicting actual road construction project duration was developed; a real case study tested the accuracy of proposed model. According to the analysis of case study, the most contributing causes and groups to delays were discussed, and some future recommendations were proposed in order to control and minimize delays in road construction projects. These findings can be helpful for project managers to mitigate the road construction delays in Egypt. In order to effectively overcome the road construction delays in developing countries, suggestions are made for fundamental and large

  16. The German joint research project "concepts for future gravity satellite missions"

    Science.gov (United States)

    Reubelt, Tilo; Sneeuw, Nico; Fichter, Walter; Müller, Jürgen

    2010-05-01

    Within the German joint research project "concepts for future gravity satellite missions", funded by the Geotechnologies programme of the German Federal Ministry of Education and Research, options and concepts for future satellite missions for precise (time-variable) gravity field recovery are investigated. The project team is composed of members from science and industry, bringing together experts in geodesy, satellite systems, metrology, sensor technology and control systems. The majority of team members already contributed to former gravity missions. The composition of the team guarantees that not only geodetic aspects and objectives are investigated, but also technological and financial constraints are considered. Conversely, satellite, sensor and system concepts are developed and improved in a direct exchange with geodetic and scientific claims. The project aims to develop concepts for both near and mid-term future satellite missions, taking into account e.g. advanced satellite formations and constellations, improved orbit design, innovative metrology and sensor systems and advances in satellite systems.

  17. Impossible Geometric Constructions: A Calculus Writing Project

    Science.gov (United States)

    Awtrey, Chad

    2013-01-01

    This article discusses a writing project that offers students the opportunity to solve one of the most famous geometric problems of Greek antiquity; namely, the impossibility of trisecting the angle [pi]/3. Along the way, students study the history of Greek geometry problems as well as the life and achievements of Carl Friedrich Gauss. Included is…

  18. Leadership Quality for Malaysia Construction Leader to Steer a Success Construction Project

    Directory of Open Access Journals (Sweden)

    Ngah Nasaruddin Nur Ain

    2016-01-01

    Full Text Available Issues that dominate the construction industry for the long time such as time overrun, cost overrun, quality of construction and also safety during the construction process are difficult to resolve because of several factors involved which amongst them are leadership quality in the industry. Solving these issues can make the industry more sustainable in nature. This paper presents the need of leadership quality among construction parties involved to steer a construction project successfully. Literature work found that 11 leadership qualities to ensure construction project success. From the frequency analysis, five most dominant leadership qualities are team building, communication skill, visioning, planning & strategy skill, and decision making. Beside the literature, this study also seeks an opinion from a senior leader of a successful construction company regarding the need of these qualities amongst parties to resolve the construction issues. The results from an interview session indicate that he fully agreed with the need of all the qualities in the construction industry. This shows that there is a strong relationship between solving the issues with the leadership quality in ensuring construction project success. These qualities should be further investigated to acquire a better representation of leadership quality in resolving construction issues for Malaysia construction industry.

  19. Managing Pre-Construction and Construction Risks on Project Sites in Abuja-Nigeria

    Directory of Open Access Journals (Sweden)

    Jimoh R.A.

    2016-03-01

    Full Text Available Managing risks in construction projects has been acknowledged as a key direction process for the purposes of attaining the project goal in terms of time, cost, quality, safety, and environmental sustainability. Hence, the paper evaluated pre-construction and construction risks on active project sites in Abuja-Nigeria. This was achieved using survey method through the self-administration of 35 questionnaires to the professionals handling the 35 identified projects being undertaking at that time. Results showed that errors and omissions in design and improperly defined project scope had mean score values of 3.03 and 2.54, respectively, were the construction risks most experienced by the professionals during pre-construction. On the other hand, fluctuation in market prices and delays with mean score values of 3.14 and 2.74, respectively, were the construction risks experienced by the professionals during the construction phase of the projects. It is recommended that procurement methods such as construction management should be adopted and stakeholders should keep to their own side of the bargain to avoid unnecessary delays.

  20. Construction Project Leadership from the Perspective of Islam

    Directory of Open Access Journals (Sweden)

    MUHAMAD ROSDI SENAM

    2014-12-01

    Full Text Available Construction industry is continuously being accused with common issues such as low performance, corruptions, spillages, bad practices in addition to common project failures despite advances in project management tools and techniques. This further adds to the existing and increasing complex and multi-facets business environment in construction projects that has resulted in the increasing pressure and challenges faced by project leaders and project managers today. Researchers in project management literature calls for more project leadership research as leadership now is increasingly recognised as project success factor. Ethical dilemma and leadership crisis facing the project managers and business organisations reveals the shortcomings and inadequacies of the conventional non-Islamic leadership that is believed to be or that has not fully considered the religious, spiritual, moral and ethical dimensions. Examples of these theories of leadership are authentic leadership, servant leadership and ethical leadership. Therefore, recent trend from literature has implicitly suggested a new form of leadership for construction project manager which is spiritual, moral, values and ethical form of leadership. The uniqueness of Islam is that it does not separate religion and other aspects of human life activities. Construction and project activities are part of the whole economic and social transactions of a nation and thus it is part of Islam. Project management in particular leadership awaits divine intervention that is tied to God consciousness and accords with values and principles prescribed in the Quran and Sunnah. This research is intended to overcome the spiritual and religious shortcomings of the present leadership models by proposing an Islamic perspective of leadership for construction project manager.

  1. Railway project design and construction (CEE 411) course updates.

    Science.gov (United States)

    2017-01-20

    Course CEE 411 "Railway Project Design and Construction" is a cornerstone of the railway : engineering education program developed by the Rail Transportation and Engineering Center : (RailTEC) at the University of Illinois at Urbana-Champaign (UIUC)....

  2. Selecting the right collaborative components in a construction project

    DEFF Research Database (Denmark)

    Bohnstedt, Kristian Ditlev; Wandahl, Søren

    2017-01-01

    Regardless of context and scope, collaboration is consistently attributed to be an essential determinant of success in construction projects. Researches have long been concerned with the issue of poor collaboration, but situational determination of collaborative components has been overlooked...

  3. Risk Management In Construction Projects Of Developing Countries

    National Research Council Canada - National Science Library

    Divya Gupta; Manoj Sharma

    2015-01-01

    Managing risks in construction projects has been perceived as a very important management process so as to accomplish the undertaking goals as far as time, cost, quality, safety and environmental sustainability...

  4. Risk Management in Construction Project: Taking Fairness into Account

    Science.gov (United States)

    Górecki, Jarosław; Bizon-Górecka, Jadwiga

    2017-10-01

    Risk management requires a comprehensive review of possible hazards, their possible outcomes as well as some recommendations about minimizing the risk. The study emphasises that the project risk management refers to an analysis of the risk factors and a creation of the strategy minimising negative effects of the risk. It was pointed out that a construction project is this kind of projects that can be defined as a unique process of high complexity (design documentation, various stages of creating the building), which has clearly defined time frames and a given financial limit. It is executed as a team work, by qualified or highly qualified specialists of different matters, for example masonry, precast, etc. Additionally, it requires a use of modern equipment and an adequate preparation of the investment. Therefore, the risk management focuses on the problems allowing for troubleshooting. A basis of the risk management is to recognise the fundamentals, which are crucial for the construction project management, i.e. an object perspective, including technological, supporting and management processes as well as an entity perspective – project stakeholders. Construction projects require also an acquaintance with the specificity of the branch. The article refers to the risk management in construction project and, in particular, a phenomenon of participants’ fairness in such projects. The problem of fairness of the entities involved in a project should be understood as a fair play, according to the arrangements agreed in a contract and compatible with current formal procedures and social rules. It was indicated that fairness can be treated as an important factor in predicting the success of such projects. Interviews conducted among contractors in Kuyavian-Pomeranian region showed varied fairness requirements put to individual participants of construction projects. The article presents results of the research. It shows a desired attitude of the surveyed enterprises

  5. RISK ANALYSIS IN CONSTRUCTION PROJECTS: A PRACTICAL SELECTION METHODOLOGY

    OpenAIRE

    Alberto De Marco; Muhammad Jamaluddin Thaheem

    2014-01-01

    Project Risk Management (PRM) is gaining attention from researchers and practitioners in the form of sophisticated tools and techniques to help construction managers perform risk management. However, the large variety of techniques has made selecting an appropriate solution a complex and risky task in itself. Accordingly, this study proposes a practical framework methodology to assist construction project managers and practitioners in choosing a suitable risk analysis technique based on selec...

  6. The Role of Demonstration Projects in Construction innovation processes

    DEFF Research Database (Denmark)

    Clausen, Lennie

    1999-01-01

    The article is describing the methodology of a case-study approach to the investigation of demonstration projects and their impact on the development of process and product innovations in the construction industry.......The article is describing the methodology of a case-study approach to the investigation of demonstration projects and their impact on the development of process and product innovations in the construction industry....

  7. A Systematic Approach to Modelling Change Processes in Construction Projects

    Directory of Open Access Journals (Sweden)

    Ibrahim Motawa

    2012-11-01

    Full Text Available Modelling change processes within construction projects isessential to implement changes efficiently. Incomplete informationon the project variables at the early stages of projects leads toinadequate knowledge of future states and imprecision arisingfrom ambiguity in project parameters. This lack of knowledge isconsidered among the main source of changes in construction.Change identification and evaluation, in addition to predictingits impacts on project parameters, can help in minimising thedisruptive effects of changes. This paper presents a systematicapproach to modelling change process within construction projectsthat helps improve change identification and evaluation. Theapproach represents the key decisions required to implementchanges. The requirements of an effective change processare presented first. The variables defined for efficient changeassessment and diagnosis are then presented. Assessmentof construction changes requires an analysis for the projectcharacteristics that lead to change and also analysis of therelationship between the change causes and effects. The paperconcludes that, at the early stages of a project, projects with a highlikelihood of change occurrence should have a control mechanismover the project characteristics that have high influence on theproject. It also concludes, for the relationship between changecauses and effects, the multiple causes of change should bemodelled in a way to enable evaluating the change effects moreaccurately. The proposed approach is the framework for tacklingsuch conclusions and can be used for evaluating change casesdepending on the available information at the early stages ofconstruction projects.

  8. Methodology for construction compliance monitoring in the crediting of investment projects for road construction

    Science.gov (United States)

    Vaynshtok, Natalia

    2017-10-01

    The article provides the results of development of the methodology for construction compliance monitoring in the crediting of investment projects for road construction. Work scope analysis of construction audit was conducted and an algorithm of financial audit in the crediting investment projects was developed. Furthermore, the possible pitfalls and abuses of counterparties were investigated and recommendations were given allowing the bank to receive objective and independent information on the progress of the project in real time. This mechanism is useful for the bank in insurance of possible risks, targeted and rational use of credit funds.

  9. Ranking of delay factors in construction projects after Egyptian revolution

    Directory of Open Access Journals (Sweden)

    Remon Fayek Aziz

    2013-09-01

    Full Text Available Time is one of the major considerations throughout project management life cycle and can be regarded as one of the most important parameters of a project and the driving force of project success. Time delay is a very frequent phenomenon and is almost associated with nearly all constructing projects. However, little effort has been made to curtail the phenomenon, this research work attempts to identify, investigate, and rank factors perceived to affect delays in the Egyptian construction projects with respect to their relative importance so as to proffer possible ways of coping with this phenomenon. To achieve this objective, researcher invited practitioners and experts, comprising a statistically representative sample to participate in a structured questionnaire survey. Brain storming was taken into consideration, through which a number of delay factors were identified in construction projects. Totally, ninety-nine (99 factors were short-listed to be made part of the questionnaire survey and were identified and categorized into nine (9 major categories. The survey was conducted with experts and representatives from private, public, and local general construction firms. The data were analyzed using Relative Importance Index (RII, ranking and simple percentages. Ranking of factors and categories was demonstrated according to their importance level on delay, especially after 25/1/2011 (Egyptian revolution. According to the case study results, the most contributing factors and categories (those need attention to delays were discussed, and some recommendations were made in order to minimize and control delays in construction projects. Also, this paper can serve as a guide for all construction parties with effective management in construction projects to achieve a competitive level of quality and a time effective project.

  10. Genetic algorithms for construction site layout in project planning

    NARCIS (Netherlands)

    Mawdesley, Michael J.; Al-Jibouri, Saad H.S.; Yang, Hongbo

    2002-01-01

    Construction site layout is concerned with the existence, positioning, and timing of the temporary facilities that are used to carry out a construction project. Typically these problems are very complicated to formulate and difficult to solve. They are, however, very important to virtually any

  11. Alignment between ICT and communication in construction projects

    NARCIS (Netherlands)

    Adriaanse, Adriaan Maria; Voordijk, Johannes T.; Dewulf, Geert P.M.R.

    2004-01-01

    Through rapid advancements in ICT, opportunities arise in enhancing communication between participants of different organisations in construction projects. The use of ICT in construction is, however, relatively limited and ineffective compared to other sectors such as the automotive or the aerospace

  12. Integration of Open BIM class software in construction projects engineering

    OpenAIRE

    Tomasz Wiatr; Andrzej Sikorski

    2016-01-01

    The conventional approach to project management in construction industry is based on multiple specialized software tools which have very limited capability of data exchange. The BIM methodology allows for co-operation and data transfers among various member subsystems relying on IFC which supports construction designing with CAD, FEM, and construction planning using PMS. The most challenging obstacles to full integration are of two kinds: methodological/technical and business related. The bus...

  13. Imperative Causes of Delays in Construction Projects from Developers’ Outlook

    Directory of Open Access Journals (Sweden)

    Othuman Mydin M.A.

    2014-03-01

    Full Text Available Project delays in the construction industry are a universal or large-scale observable fact affecting not only the construction industry but the overall economy of countries as well. As far as the Malaysian construction industry is concerned, project delays are common problems in the construction industry, particularly in housing development. The objective of this study is to evaluate and identify the causes and the consequences of project delays in private housing development projects in Malaysia, and the remedies that can minimize these delays. The top ten causes of delays are weather conditions, poor site conditions, poor site management, incomplete documents, lack of experience, financial problems, contract modifications, delay in the approval of major variations, contractor coordination problems with other parties, and construction mistakes and defective works. It has been analysed that the causes of the delays point to the contractor factors, which contribute to the major factors that cause project delays in private housing development projects. The consequences of the delays include time overrun, cost overrun, differences in opinion, negotiations, legal actions and total abandonment. Herewith are presented some recommendations to minimize these project delays.

  14. Risk management in public sector construction projects: Case ...

    African Journals Online (AJOL)

    Construction projects are facing problems that impede their expected performance. Time, cost, quality, and competition limitations place constraints on projects. These challenges require incisive risk-management (RM) practices. This article presents the findings of a multiple case study, which determined how and why ...

  15. The contributions of construction material waste to project cost ...

    African Journals Online (AJOL)

    The result implies that any increase in material waste on the construction site would result in a corresponding increase in the amount of cost overrun for a project. Table 1: Results of the Pearson moment-correlation analysis between the volume of material wasted (52.4% average project completion) and the cost overruns ...

  16. Contracting Economics of Large Engineering and Construction Projects

    NARCIS (Netherlands)

    Berends, T.C.

    2007-01-01

    Large Engineering and Construction Projects (LECPs) form an important area of economic activity, covering a range of different artefacts. These projects have in common that they are massive undertakings, spanning long time periods and they involve large capital investments. Uncertainty and risk are

  17. Effects of Procurement Related Factors on Construction Project ...

    African Journals Online (AJOL)

    Several Literatures in construction management support the view that procurements have impacts on project performance. Aim of this study is to investigate the effects of procurement related factors of procurement selection criteria, tendering methods and variation orders on project performance. Purpose of the study is to ...

  18. Public private partnership construction project disputes in Nigeria ...

    African Journals Online (AJOL)

    This research examines the possibility of operating a smooth Public Private Partnership (PPP) project for the entire concession period following financial closure, without recourse to litigation or arbitration for settlement of disputes by studying the causes and effects of disputes in construction projects procured in Nigeria ...

  19. Albuquerque's constructed wetland pilot project for wastewater polishing

    Science.gov (United States)

    Michael D. Marcus; Shannon M. House; Nathan A. Bowles; Robert T. Sekiya; J. Steven Glass

    1999-01-01

    The City of Albuquerque has funded the Constructed Wetland Pilot Project (CWPP) since 1995 at the City's Southside Water Reclamation Plant (SWRP). Results from CWPP and other wetland treatment projects indicate that appropriately designed surface-flow wetlands could increase the cost-efficiencies of wastewater treatment, as well as help the City meet present and...

  20. Multi-objective genetic optimization of linear construction projects

    Directory of Open Access Journals (Sweden)

    Fatma A. Agrama

    2012-08-01

    Full Text Available In the real world, the majority cases of optimization problems, met by engineers, are composed of several conflicting objectives. This paper presents an approach for a multi-objective optimization model for scheduling linear construction projects. Linear construction projects have many identical units wherein activities repeat from one unit to another. Highway, pipeline, and tunnels are good examples that exhibit repetitive characteristics. These projects represent a large portion of the construction industry. The present model enables construction planners to generate optimal/near-optimal construction plans that minimize project duration, total work interruptions, and total number of crews. Each of these plans identifies, from a set of feasible alternatives, optimal crew synchronization for each activity and activity interruptions at each unit. This model satisfies the following aspects: (1 it is based on the line of balance technique; (2 it considers non-serial typical activities networks with finish–start relationship and both lag or overlap time between activities is allowed; (3 it utilizes a multi-objective genetic algorithms approach; (4 it is developed as a spreadsheet template that is easy to use. Details of the model with visual charts are presented. An application example is analyzed to illustrate the use of the model and demonstrate its capabilities in optimizing the scheduling of linear construction projects.

  1. Identification and assessment of risk factors affecting construction projects

    Directory of Open Access Journals (Sweden)

    Mohamed Sayed Bassiony Ahmed Abd El-Karim

    2017-08-01

    Unexpected increase in cost and delays in construction projects are caused by owner, contractor, environments, etc. in which several types of risk factors may occur concurrently. The effect of cost overrun and schedule overrun do not only influence the construction industry but the overall economy as well. Even though construction project increasing in cost and schedule has received extensive attention of researchers, but because of continuous changes and development in the field, the study considered of added value to the construction industry in Egypt, in addition to risk strategy and plan analysis. In order to meet the deadline of a project and due to the complex nature of construction projects, cost and scheduling should be flexible enough to accommodate changes without negatively affecting the overall project cost and duration. As such, the objectives of the presented research in this paper are to identify, study, and assess the effect of the factors that affect cost and time contingency. Data are collected from sixteen construction companies in Egypt. The collected data, output charts and analyses spreadsheets will be used for the development of computerized model built by the authors with identification abbreviation RIAM.

  2. Project management: a case study in construction industry

    OpenAIRE

    Kömürcü, Ahmet Murat

    1996-01-01

    Ankara : The Faculty of Management and the Graduate School of Business Administration of Bilkent University, 1996. Thesis (Master's) -- Bilkent University, 1996. Includes bibliographical references leaves 55-56 One of the application areas that project management can effectively be applied is the construction industry. In this thesis, a case study is carried out in order to point out the importance and essentiality of project management, especially project scheduling and control. For...

  3. DECISION SUPPORT CONCEPT TO MANAGEMENT OF CONSTRUCTION PROJECTS - PROBLEM OF CONSTRUCTION SITE SELECTION

    Directory of Open Access Journals (Sweden)

    Nikša Jajac

    2013-02-01

    Full Text Available The aim of this paper is to present Decision Support Concept (DSC for management of construction projects. Focus of our research is in application of multicritera methods (MCM to decision making in planning phase of construction projects (related to the problem of construction sites selection. The problem is identified as a significant one from many different aspects such as economic aspect, civil engineering aspect, etc. what indicates the necessity for evaluation of multiple sites by several different criteria. Therefore, DSC for construction site selection based on PROMETHEE method is designed. In order to define the appropriate criteria, their weights and preference functions for the concept, three groups of stakeholders are involved (investors, construction experts and experts for real estate market in its design. AHP method has been used for determination of criteria weights. The model has been tested on the problem of site selection for construction of residential-commercial building in four largest cities in Croatia.

  4. A study for EVMS application to NPP construction project

    Energy Technology Data Exchange (ETDEWEB)

    Roh, M. S.; Kwak, J. K. [KEPCO, Daejeon (Korea, Republic of)

    2016-05-15

    The earned value project management method integrates three critical elements of project management scope management, cost management and time management. It requires the periodic monitoring of actual expenditures and physical scope accomplishments, and allows calculation of cost and schedule variances along with performance indices. It allows forecasting of project cost and schedule at completion and highlights the possible need for corrective action. It is also anticipated that there will be intense competition in the nuclear industry as the cost and time for nuclear power plant construction. In order to attain competitive advantages under the globalized market, utilizing advanced project control systems by integrating cost and time management is of great concern for practitioners as well as the researchers. In this context, the purpose of this paper is to identify major previously improving activities that characterize the real-world Earned Value Management System (EVMS) implementation for nuclear power plant construction. And several distinct attributes of nuclear power plant construction were also investigated.

  5. Smart optimization for mega construction projects using artificial intelligence

    Directory of Open Access Journals (Sweden)

    Remon Fayek Aziz

    2014-09-01

    Full Text Available During practicing the planning process, scheduling and controlling mega construction projects, there are varieties of procedures and methods that should be taken into consideration during project life cycle. Accordingly, it is important to consider the different modes that may be selected for an activity in the scheduling, for controlling mega construction projects. Critical Path Method “CPM” is useful for scheduling, controlling and improving mega construction projects; hence this paper presents the development of a model which incorporates the basic concepts of Critical Path Method “CPM” with a multi-objective Genetic Algorithm “GA” simultaneously. The main objective of this model is to suggest a practical support for compound horizontally and vertically mega construction planners who need to optimize resource utilization in order to minimize project duration and its cost with maximizing its quality simultaneously. Proposed software is named Smart Critical Path Method System, “SCPMS” which uses features of Critical Path Method “CPM” and multi-objective Genetic Algorithms “GAs”. The main inputs and outputs of the proposed software are demonstrated and outlined; also the main subroutines and the inference wizards are detailed. The application of this research is focused on planning and scheduling mega construction projects that hold a good promise to: (1 Increase resource use efficiency; (2 Reduce construction total time; (3 Minimize construction total cost; and (4 Measure and improve construction total quality. In addition, the verification and validation of the proposed software are tested using a real case study.

  6. Integration of Open BIM class software in construction projects engineering

    Directory of Open Access Journals (Sweden)

    Tomasz Wiatr

    2016-12-01

    Full Text Available The conventional approach to project management in construction industry is based on multiple specialized software tools which have very limited capability of data exchange. The BIM methodology allows for co-operation and data transfers among various member subsystems relying on IFC which supports construction designing with CAD, FEM, and construction planning using PMS. The most challenging obstacles to full integration are of two kinds: methodological/technical and business related. The business-related problems result from high costs of a complete analysis and software tools. These challenges can be overcome with Open BIM, an approach proposed by the authors, which is based on the model decomposition and independent processing resulting from combination of the design and management processes awareness of the building features. This survey includes both proposed systems and the underlying concepts in Polish construction context.[b]Keywords: [/b]construction, buildings, projects, BIM, CAD, FEM, PMS

  7. The AAU-cubesat Student Satellite Project: Architectual Overview and Lessons Learnt

    DEFF Research Database (Denmark)

    Østergaard, Kasper Zinck; Alminde, Lars; Bisgaard, Morten

    the cubesat concept that prescribes a satellite with dimensions 10x10x10cm and mass one kilogram. This paper will describe the overall architecture of the AAU-cubesat in order to show what a pico-satellite can be and demonstrate all the fields of engineering which must come together to built a student...... satellite like the AAU-cubesat. Results from the operation phase will be stated, and recommendations on further work on pico-satellite designs will be given. In addition as the project has been carried through by students, the educational value of the project will be addressed as well....

  8. Project coalitions in healthcare construction projects and the application of real options: an exploratory survey

    NARCIS (Netherlands)

    van Reedt Dortland, Maartje; Dewulf, Geert P.M.R.; Voordijk, Johannes T.

    2013-01-01

    OBJECTIVE: Exploring the impact of the type of project coalition on types of flexibility by analyzing considered and exercised flexibilities in separated and integrated project coalitions in the design and construction phase and the operations and maintenance phase of a healthcare construction

  9. Integrated Adaptive Analysis and Visualization of Satellite Network Data Project

    Data.gov (United States)

    National Aeronautics and Space Administration — We propose to develop a system that enables integrated and adaptive analysis and visualization of satellite network management data. Integrated analysis and...

  10. Causes of Low-Skilled Workers’ Performance in Construction Projects

    Directory of Open Access Journals (Sweden)

    Alhaji Ali Zannah

    2017-06-01

    Full Text Available Skilled workers’ performance is one of the crucial aspects of labour productivity that requires proper attention for effective projects delivery in the construction industry. The level of skilled workers’ low performance has been seen to be a major factor which contributes toward inefficient construction projects productivity. Therefore, the objective of this research is to identify the causes of low-skilled workers’ performance in construction projects in the Nigeria. The objective was achieved through a structured quantitative method of questionnaire distributed to 150 respondents that comprise of active stakeholders in the Nigerian construction industry. 111 responses representing 74 % were retrieved. The data were analysed using descriptive statistics and analysis of variance (ANOVA. The finding shows that; low wages of skilled, lack of sufficient skill acquisition centres and lack of incentive schemes for skilled workers were the most significant causes of low-skilled workers’ performance in the Nigerian construction industry. The homogenous analysis indicates that there are significant differences in perception of respondents on few variables whereas majority of respondents have similarities in most of the variables. The research findings indicate the need for stakeholders in the Nigerian construction industry to provide incentives and motivate skilled workers, provide training and retraining, conducive working condition, supply of quality materials and equipment, and proper site management in order improve low-skilled workers’ performance in Nigerian construction industry towards optimal performance.

  11. Implementation of lean construction techniques for minimizing the risks effect on project construction time

    Directory of Open Access Journals (Sweden)

    Usama Hamed Issa

    2013-12-01

    Full Text Available The construction projects involve various risk factors which have various impacts on time objective that may lead to time-overrun. This study suggests and applies a new technique for minimizing risk factors effect on time using lean construction principles. The lean construction is implemented in this study using the last planner system through execution of an industrial project in Egypt. Evaluating the effect of using the new tool is described in terms of two measurements: Percent Expected Time-overrun (PET and Percent Plan Completed (PPC. The most important risk factors are identified and assessed, while PET is quantified at the project start and during the project execution using a model for time-overrun quantification. The results showed that total project time is reduced by 15.57% due to decreasing PET values, while PPC values improved. This is due to minimizing and mitigating the effect of most of the risk factors in this project due to implementing lean construction techniques. The results proved that the quantification model is suitable for evaluating the effect of using lean construction techniques. In addition, the results showed that average value of PET due to factors affected by lean techniques represents 67% from PET values due to all minimized risk factors.

  12. Facilitating Value Creation and Delivery in Construction Projects

    DEFF Research Database (Denmark)

    Thyssen, Mikael Hygum; Bonke, Sten

    This thesis is about value creation in the early stages of construction design processes. It has been problem-driven with a specific management concept, the workshop model, as an outset. Essentially the question was; how should construction project design processes be managed with the objective...... of maximizing client and user value? To this end the research project can be seen as an effect of a current management discourse, where customer value is the slogan. However, in an academic context, such a question needs justification as well as modification to become operational. In relation to justification....... In addition, the research on construction design management is still in its infancy. Focusing on the early stages of designing, where the scene is set for everything that follows, this led to the following research questions: 1. How do the client and other project stakeholders’ perceptions of value manifest...

  13. Cost Based Value Stream Mapping as a Sustainable Construction Tool for Underground Pipeline Construction Projects

    Directory of Open Access Journals (Sweden)

    Murat Gunduz

    2017-11-01

    Full Text Available This paper deals with application of Value Stream Mapping (VSM as a sustainable construction tool on a real construction project of installation of underground pipelines. VSM was adapted to reduce the high percentage of non-value-added activities and time wastes during each construction stage and the paper searched for an effective way to consider the cost for studied construction of underground pipeline. This paper is unique in its way that it adopts cost implementation of VSM to improve the productivity in underground pipeline projects. The data was observed and collected from site during construction, indicating the cycle time, value added and non-value added of each construction stage. The current state was built based on these details. This was an eye-opening exercise and a process management tool as a trigger for improvement. After the current state assessment, a future state is attempted by Value Stream Mapping tool balancing the resources using a Line of Balance (LOB technique. Moreover, a sustainable cost estimation model was developed during current state and future state to calculate the cost of underground pipeline construction. The result shows a cost reduction of 20.8% between current and future states. This reflects the importance of the cost based Value Stream Mapping in construction as a sustainable measurement tool. This new tool could be utilized in construction industry to add the sustainability and effective cost management.

  14. A Framework for Coordination Process into Construction Projects

    Directory of Open Access Journals (Sweden)

    Alaloul Wesam S.

    2016-01-01

    Full Text Available Construction industry is recognized as high fragmentation, low efficiency, cost and time overruns in contrast with other industries. These peculiarities are the main roots of poor performance facing by the industry. Effective coordination is vital in construction projects success and mitigate the fragmentation dilemma, however it is often difficult to achieve and need iterative process. Coordination is core issue to improve performance in construction project. Relevant studies have addressed the coordination process importance and implementation, but not in a framework. This paper propose a framework for coordination process in construction projects, as well as its relationship with performance. The objective of the framework is to provide a roadmap for the construction parties to realize operational excellence so that collectively stakeholders can recognize the effect of coordination process application on the project performance. The data were obtained from literature review and structured interviews with five experts. The analysis produced the framework of coordination based on the extensively used procedures for information and data flow between stakeholders.

  15. Influence of Selected Stakeholders of Construction Investment Projects on the Course of Project

    Science.gov (United States)

    Bizon-Górecka, Jadwiga; Górecki, Jarosław

    2017-10-01

    The article presents an entity perspective of the construction investment projects. In a course of the project there are stakeholders who have an indirect influence (e.g. decision-makers in the selection of projects) or a direct influence (e.g. members of the project team). An intuitive opinion about a significant influence of project stakeholders on the project’s course encouraged the authors to undertake a research in this area. The article illustrates the initial phases of the construction project life cycle in a perspective of the entities and, in particular, a role of different stakeholders in making decisions that affect a course of the project. An analysis of the structure of the construction project life cycle makes a substantial involvement of various subjects in the initial phases of the project, i.e. in an initial phase and during a creation of the structures. A key point is to underline the factors of decision-making by the participants of the construction process. It was indicated that the stakeholders have a different impact on the course of the project. In large projects, which have many stakeholders, their role in the implementation of the investment project can vary, depending on the life cycle of the project. They can have positive or negative impacts on achieving the project objectives. The paper presents the results of 100 surveys made among participants of the building processes, executors of the construction projects in the Kuyavian-Pomeranian region. The study was conducted in December 2016 and January 2017. It revealed what is the impact of individual stakeholders of the construction projects on the course of the project. A special attention was paid to a complex relationship between objectives of the project and stakeholders’ goals. A great care to the smallest possible number of risks, which may arise from the different objectives of the project and its stakeholders’ goals, should be focused on the augmentation of correlation of

  16. A conceptual model of psychological contracts in construction projects

    Directory of Open Access Journals (Sweden)

    Yongjian Ke

    2016-09-01

    Full Text Available The strategic importance of relationship style contracting is recognised in the construction industry. Both public and private sector clients are stipulating more integrated and collaborative forms of procurement. Despite relationship and integrated contractual arrangement being available for some time, it is clear that construction firms have been slow to adopt them. Hence it is timely to examine how social exchanges, via unwritten agreement and behaviours, are being nurtured in construction projects. This paper adopted the concept of Psychological Contracts (PC to describe unwritten agreement and behaviours. A conceptual model of the PC is developed and validated using the results from a questionnaire survey administered to construction professionals in Australia. The results uncovered the relationships that existed amongst relational conditions and relational benefits, the PC and the partners’ satisfaction. The results show that all the hypotheses in the conceptual model of the PC are supported, suggesting the PC model is important and may have an effect on project performance and relationship quality among contracting parties. A validated model of the PC in construction was then developed based on the correlations among each component. The managerial implications are that past relationships and relationship characteristics should be taken into account in the selection of procurement partners and the promise of future resources, support and tangible relational outcomes are also vital. It is important for contracting parties to pay attention to unwritten agreements (the PC and behaviours when managing construction projects.

  17. Factors causing cost variation for constructing wastewater projects in Egypt

    Directory of Open Access Journals (Sweden)

    Remon Fayek Aziz

    2013-03-01

    Full Text Available Cost is one of the major considerations throughout the project management life cycle and can be regarded as one of the most important parameters of a project and the driving force of project success. Despite its proven importance, it is common to see a construction project failing to achieve its objectives within the specific cost. Cost variation is a very frequent phenomenon and is almost associated with nearly constructing all wastewater projects. Maintaining steady cost projection on wastewater projects had been recently an issue of serious concern, both to the client and project contractors. Cost deviation from initial cost plan had been prevalent on construction sites. However, little or no effort has been made to curtail the phenomenon, this research work attempts to identify, investigate and rank factors perceived to affect cost variation in the Egyptian wastewater projects with respect to their relative importance so as to proffer possible ways of coping with this phenomenon. To achieve this objective, author invited practitioners and experts, comprising a statistically representative sample, to participate in a structured questionnaire survey. Brain storming was taken into consideration, through which a number of cost variation factors were identified for constructing wastewater projects. Totally 52 factors were short-listed to be made part of the questionnaire survey and the survey was conducted with experts and representatives from private, public and local general construction firms. The data were analyzed using Relative Importance Index, ranking and simple percentages. It was analytically discovered that factors such as: (1 Lowest bidding procurement method; (2 Additional work; (3 Bureaucracy in bidding/tendering method; (4 Wrong method of cost estimation; and (5 Funding problems were critical for causing cost variation, while (1 Inaccurate cost estimation; (2 Mode of financing and payment for completed work; (3 Unexpected ground

  18. 75 FR 13765 - Submission for OMB Review; Use of Project Labor Agreements for Federal Construction Projects

    Science.gov (United States)

    2010-03-23

    ... a project labor agreement (PLA), as they may decide appropriate, on large-scale construction projects, where the total cost to the Government is more than $25 million, in order to promote economy and... project labor agreements will-- (1) Advance the Federal Government's interest in achieving economy and...

  19. THE INTEGRATION OF LEAN CONSTRUCTION WITH PROJECT MANAGEMENT - A SYSTEMATIC REVIEW OF LITERATURE

    National Research Council Canada - National Science Library

    Lucas Machado; Rosane Malacarne; Ricardo Mendes Júnior; Robson Seleme

    2017-01-01

    .... Recently, the construction sector companies have integrated the principles of Lean Construction for Project Management, representing a new and robust approach in troubleshooting existing in the construction industry...

  20. Impact of Information and Communication Technology (ICT) on construction projects

    OpenAIRE

    Rimmington, A; Dickens, G.; Pasquire, C

    2015-01-01

    The changing face of construction projects has resulted in a movement towards the use of technology as a primary means of communication. The consequences of this rise in the use of information and communication technology (ICT) is a loss of interpersonal communication skills. A number of resulting issues within the human – electronic and human – human interfaces are identified in an attempt to define the efficiency of communication in projects. The research shows how ICT effects the social en...

  1. Contracting Economics of Large Engineering and Construction Projects

    OpenAIRE

    Berends, T.C.

    2007-01-01

    Large Engineering and Construction Projects (LECPs) form an important area of economic activity, covering a range of different artefacts. These projects have in common that they are massive undertakings, spanning long time periods and they involve large capital investments. Uncertainty and risk are the ruling paradigms. In the oil, gas and petrochemical industry, Engineering Contractors (ECs) play a key role in the development and implementation of the LECPs for processing facilities. The con...

  2. A Projective-to-Conformal Fefferman-Type Construction

    Science.gov (United States)

    Hammerl, Matthias; Sagerschnig, Katja; Šilhan, Josef; Taghavi-Chabert, Arman; Zádník, Vojtĕch

    2017-10-01

    We study a Fefferman-type construction based on the inclusion of Lie groups SL(n+1) into Spin(n+1,n+1). The construction associates a split-signature (n,n)-conformal spin structure to a projective structure of dimension n. We prove the existence of a canonical pure twistor spinor and a light-like conformal Killing field on the constructed conformal space. We obtain a complete characterisation of the constructed conformal spaces in terms of these solutions to overdetermined equations and an integrability condition on the Weyl curvature. The Fefferman-type construction presented here can be understood as an alternative approach to study a conformal version of classical Patterson-Walker metrics as discussed in recent works by Dunajski-Tod and by the authors. The present work therefore gives a complete exposition of conformal Patterson-Walker metrics from the viewpoint of parabolic geometry.

  3. Ontology-based Semantic Retrieval for Risk Management of Construction Project

    OpenAIRE

    Shaohua Jiang; Jian Zhang; Haiyan Zhang

    2013-01-01

    Risk management is crucial for successful construction project management. Effective risk assessment can improve construction enterprises’ competitiveness and profitability to a great extent. And the information of previous projects is a very precious resource and reference for construction project risk management. In order to facilitate project participants to query required information of previous projects among numerous project documents efficiently, this paper introduces ontology as...

  4. Leadership for successful construction projects : demonstration of the effect of task motivation as opposed to relationships orientation on success in construction projects

    OpenAIRE

    Berezina, Elena

    2012-01-01

    In such complex technological industry as constructions where contracts are estimated with million Euro budgets, where competition is fierce and penalties are high, it’s essential for contractors to ensure all management activities facilitate project success. Today many construction companies practice project management approach and employ project managers in charge of project success. This thesis aims to find out whether project manager’s leadership style has impact on construction project o...

  5. Environmental testing philosophy for a Sandia National Laboratories small satellite project

    Energy Technology Data Exchange (ETDEWEB)

    Cap, J.S.; Rackley, N.G.

    1996-03-01

    Sandia National Laboratories is the system integrator on a small satellite project. Following the intent of the NASA GEVS document, an integrated test philosophy was formulated to certify the satellite for flight. The purpose of this paper is to present that philosophy.

  6. The AAU-cubesat Student Satellite Project: Architectual Overview and Lessons Learnt

    DEFF Research Database (Denmark)

    Østergaard, Kasper Zinck; Alminde, Lars; Bisgaard, Morten

    2004-01-01

    In September 2001 Aalborg university started the AAU-cubesat project that reached its climax when the student built satellite was launched into space on the 30th of June 2003 on top of a former Russian ICBM. AAU-cubesat was among the first five satellites to be launched that are built within the ...

  7. 41 CFR 102-80.75 - Who assesses environmental issues in Federal construction and lease construction projects?

    Science.gov (United States)

    2010-07-01

    ... environmental issues in Federal construction and lease construction projects? 102-80.75 Section 102-80.75 Public... Management Assessment of Environmental Issues § 102-80.75 Who assesses environmental issues in Federal construction and lease construction projects? Federal agencies must assess required environmental issues...

  8. A Collective Detection Based GPS Receiver for Small Satellites Project

    Data.gov (United States)

    National Aeronautics and Space Administration — To solve the problem of autonomous navigation on small satellite platforms less than 20 kg, we propose to develop an onboard orbit determination receiver for small...

  9. Thermal Mapping Airborne Simulator for Small Satellite Sensor Project

    Data.gov (United States)

    National Aeronautics and Space Administration — A high performance, inexpensive, airborne simulator that will serve as the prototype for a small satellite based imaging system capable of mapping thermal anomalies...

  10. Femto-satellite Swarm State and Density Estimation Project

    Data.gov (United States)

    National Aeronautics and Space Administration — NASA is planning future missions involving fleets of small satellites in LEO and GEO that can exhibit autonomous collective behavior. Such a "swarm of...

  11. Techniques and Instruments Used in Construction Project Management Costs Dimensioning

    Directory of Open Access Journals (Sweden)

    Cătălin Onuţu

    2005-01-01

    Full Text Available The paper aims to establish a series of methods regarding the dimensioning of the main economic parameters specific to the accomplishment of a building design, parameters generally linked to the total cost of the project. The total realization cost of a construction project represents the money expression of all “efforts” (labor force, material resources, equipment and technological units, informational resources, services, taxes, technical-administrative actions, etc. necessary for the realization of the project in all its constitutive stages.

  12. International Satellite Cloud Climatology Project (ISCCP) Climate Data Record, H-Series

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The International Satellite Cloud Climatology Project (ISCCP) focuses on the distribution and variation of cloud radiative properties to improve the understanding of...

  13. Identifying and managing risk in international construction projects

    Directory of Open Access Journals (Sweden)

    Sachin Kerur

    2012-04-01

    Full Text Available Over the last decade, major construction projects have increasingly arisen in countries or regions that lack specialist, expert construction contractors, suppliers and consultants. Steps are being taken by governments in the Middle East, Eastern Europe, China, India and developing markets to address national infrastructure deficits, and by so doing, are creating new regions of booming construction demand. When coupled with anaemic growth in developed markets such as the United Kingdom, the USA and Western Europe, foreign markets present attractive opportunities to the global construction industry. However, foreign markets are littered with the cautionary tales of international contractors and consultants that have failed to grasp the intricacies and risks of operating in a new environment and have failed to capitalise on the opportunities available. By identifying the classes of risks, and undertaking detailed analysis, ranking and mitigation of relevant jurisdictional risks, participants in international construction projects will increase the likelihood of project success and commercial longevity in the new jurisdiction. Risk identification and assessment is not a science but an art, and while there are many potential approaches to the issue, we propose that our strategies for identifying, assessing, ranking and mitigating jurisdictional risks offer new international players a good chance of commercial success.

  14. Information richness in construction projects: A critical social theory

    NARCIS (Netherlands)

    Adriaanse, Adriaan Maria; Voordijk, Johannes T.; Greenwood, D

    2002-01-01

    Two important factors influencing the communication in construction projects are the interests of the people involved and the language spoken by the people involved. The objective of the paper is to analyse these factors by using recent insights in the information richness theory. The critical

  15. Infrastructure project performance in the South African construction ...

    African Journals Online (AJOL)

    Using inferential statistics such as Cronbach's alpha, t test and Cohen's d effect size measures for data analysis led to a range of findings. ... In essence, it can be argued that being quality focused, managing construction logistics optimally and making sure that consultants who are working on a project are collaborating ...

  16. Quality management in construction project design and management

    CSIR Research Space (South Africa)

    Conradie, Dirk CU

    2008-03-01

    Full Text Available The aim of this paper is to propose the use of simulation to improve design quality and to introduce new opportunities to use quality management throughout the various development stages of construction projects. The paper will attempt to identify...

  17. Model for setting priority construction project objectives aligned with ...

    African Journals Online (AJOL)

    architects, and consulting engineers, requesting them to base their responses on a specific construction project in which ... the sophistication of the client in relation to the design of the facilities, and the technological implications. ..... Normality – For parametric techniques, it is assumed that the populations from which the ...

  18. Development as an effective management system construction and investment projects

    Directory of Open Access Journals (Sweden)

    Beloborodov Roman S.

    2011-02-01

    Full Text Available The article presents the material of the application of the conception «Development» as the effective methodology of the investment-construction project management within the framework the systems approach. Theoretical principles of the application of this conception are generalized and systematized based on the example of the creation of the low habitable complex.

  19. Reducing construction waste: A study of urban infrastructure projects.

    Science.gov (United States)

    de Magalhães, Ruane Fernandes; Danilevicz, Ângela de Moura Ferreira; Saurin, Tarcisio Abreu

    2017-09-01

    The construction industry is well-known for producing waste detrimental to the environment, and its impacts have increased with the development process of cities. Although there are several studies focused on the environmental impact of residential and commercial buildings, less knowledge is available regarding decreasing construction waste (CW) generation in urban infrastructure projects. This study presents best practices to reduce waste in the said projects, stressing the role of decision-making in the design stage and the effective management of construction processes in public sector. The best practices were identified from literature review, document analysis in 14 projects of urban infrastructure, and both qualitative and quantitative survey with 18 experts (architects and engineers) playing different roles on those projects. The contributions of these research are: (i) the identification of the main building techniques related to the urban design typologies analyzed; (ii) the identification of cause-effect relationships between the design choices and the CW generation diagnosis; (iii) the proposal of a checklist to support the decision-making process, that can be used as a control and evaluation instrument when developing urban infrastructure designs, focused on the construction waste minimization (CWM). Copyright © 2017 Elsevier Ltd. All rights reserved.

  20. Infrastructure project performance in the South African construction ...

    African Journals Online (AJOL)

    Abstract. In recent times, project performance improvement, especially in developing countries, has captured the interest of a number of construction management researchers, as indicated in notable journals and conferences in the domain. The quest for excellence, waste elimination, and value creation underpins.

  1. 40 CFR 40.145-3 - Projects involving construction.

    Science.gov (United States)

    2010-07-01

    ... 40 Protection of Environment 1 2010-07-01 2010-07-01 false Projects involving construction. 40.145-3 Section 40.145-3 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY GRANTS AND OTHER.... Such description shall not, in competitive procurements, contain features which unduly restrict...

  2. Performance-based procurement for low disturbance brdige construction projects

    NARCIS (Netherlands)

    Sebastian, R.; Claeson-Jonsson, C.; Di Giulio, R.

    2013-01-01

    Purpose – This paper aims to introduce a method of performance-based procurement, based on the most economically advantageous tender (MEAT), for low-disturbance bridge construction projects in urban environment. Design/methodology/approach – The first part of this paper reviews the key performance

  3. Project Culture in the Chinese Construction Industry: Perceptions of Contractors

    Directory of Open Access Journals (Sweden)

    Jian Zou

    2012-11-01

    Full Text Available In recent years culture has become one of the most studied topicsin project management research. Some studies have investigatedthe infl uence of culture at different levels – such as nationalculture, industry culture, organisational culture and professionalculture. As a project-based industry, the construction industryneeds to have more insight concerning cultural issues at theproject level and their infl uence on the performance of constructionprojects. Few studies, however, have focused on culture at theproject level. This paper uses a questionnaire survey to determinethe perceptions of Chinese contractors about the impact of projectculture on the performance of local construction projects. This isaugmented by a series of in-depth interviews with senior executivemanagers in the industry. The fi ndings indicate that specifi c projectculture does contribute signifi cantly towards project outcomes.In particular, goal orientation and fl exibility, as two dimensionsof project culture, have a negative statistical correlation withperceived satisfaction of the process, commercial success, futurebusiness opportunities, lessons learnt from the project, satisfactionwith the relationships, and overall performance. This paper alsoindicates that the affordability of developing an appropriate projectculture is a major concern for industry practitioners.

  4. Modeling Manpower and Equipment Productivity in Tall Building Construction Projects

    Science.gov (United States)

    Mudumbai Krishnaswamy, Parthasarathy; Rajiah, Murugasan; Vasan, Ramya

    2017-12-01

    Tall building construction projects involve two critical resources of manpower and equipment. Their usage, however, widely varies due to several factors affecting their productivity. Currently, no systematic study for estimating and increasing their productivity is available. What is prevalent is the use of empirical data, experience of similar projects and assumptions. As tall building projects are here to stay and increase, to meet the emerging demands in ever shrinking urban spaces, it is imperative to explore ways and means of scientific productivity models for basic construction activities: concrete, reinforcement, formwork, block work and plastering for the input of specific resources in a mixed environment of manpower and equipment usage. Data pertaining to 72 tall building projects in India were collected and analyzed. Then, suitable productivity estimation models were developed using multiple linear regression analysis and validated using independent field data. It is hoped that the models developed in the study will be useful for quantity surveyors, cost engineers and project managers to estimate productivity of resources in tall building projects.

  5. Cost accounting in long term construction project management

    Directory of Open Access Journals (Sweden)

    Sabrina Versteg

    2017-09-01

    Full Text Available The aim of this study is to analyze the particularities that involve accounting and ways to control the revenue and costs of long-term engineering projects, in accordance with the accounting practices established by Technical Publication No. 17 (CPC 17. In order to achieve the research objectives, we performed a case study with a qualitative and quantitative approach through the collection of data and evidence from management reports and semi-structured interviews with two project coordinators and the accountant for the company that is the focus of the study. The results showed that the company under review applies accounting practices, according to the guideline of the CPC 17, in accounting for construction contracts, and achieves cost and revenue controls of these projects through project management and accounting control.

  6. The Use of Project Time Management Processes and the Schedule Performance of Construction Projects in Mexico

    Directory of Open Access Journals (Sweden)

    Rómel G. Solís-Carcaño

    2015-01-01

    Full Text Available Delays have been frequently reported as the cause of several conflicts that affect the different parties involved in construction projects. Project Time Management (PTM includes a number of planning and controlling processes that are recommended for complying with requirements related to project time. The study reported in this paper aimed at assessing the use of PTM processes and its relation with project schedule performance (i.e., timely completion. Seven PTM processes and seventy-seven tasks associated with them were identified from the literature that is globally relevant to project management. The study included the assessment of fourteen school construction projects executed by a public agency in the Yucatan Peninsula, Mexico. These projects were monitored during the construction phase in order to measure two different variables: the use of processes related to PTM (i.e., schedule planning and controlling processes and the project schedule performance. For each of these projects a Use Index was obtained for assessing the first variable, while the Schedule Performance Index and the Schedule Variance were computed to assess the second one. The results demonstrated there is statistical dependence between these two variables. Most of the projects that attained timely completion also made a greater use of the PTM processes.

  7. Multimillion Dollar Construction Project Completed in Glenn's Icing Research Tunnel

    Science.gov (United States)

    Kevdzija, Susan L.

    2001-01-01

    Over the last year, the Glenn Research Center's Icing Research Tunnel (IRT) underwent a major $5.2 million rehabilitation project as part of the Construction of Facilities program. The scope of the project included redesign and replacement of the 55-yr-old heat exchanger, the addition of fan outlet guide vanes for flow conditioning downstream of the 25-ft-diameter fan, and redesign and replacement of the C and D corner-turning vanes. The purpose of the rehabilitation was to replace old portions of the infrastructure and to improve the aerodynamic flow quality in the tunnel.

  8. Risk assessment for construction projects of transport infrastructure objects

    Science.gov (United States)

    Titarenko, Boris

    2017-10-01

    The paper analyzes and compares different methods of risk assessment for construction projects of transport objects. The management of such type of projects demands application of special probabilistic methods due to large level of uncertainty of their implementation. Risk management in the projects requires the use of probabilistic and statistical methods. The aim of the work is to develop a methodology for using traditional methods in combination with robust methods that allow obtaining reliable risk assessments in projects. The robust approach is based on the principle of maximum likelihood and in assessing the risk allows the researcher to obtain reliable results in situations of great uncertainty. The application of robust procedures allows to carry out a quantitative assessment of the main risk indicators of projects when solving the tasks of managing innovation-investment projects. Calculation of damage from the onset of a risky event is possible by any competent specialist. And an assessment of the probability of occurrence of a risky event requires the involvement of special probabilistic methods based on the proposed robust approaches. Practice shows the effectiveness and reliability of results. The methodology developed in the article can be used to create information technologies and their application in automated control systems for complex projects.

  9. A Conceptual Grey Analysis Method for Construction Projects

    Directory of Open Access Journals (Sweden)

    Maria Mikela Chatzimichailidou

    2015-05-01

    Full Text Available Concerning engineers, project management is a crucial field of research and development. Projects of high uncertainty and scale are characterized by risk, primarily related to their completion time. Thus, safe duration estimations, throughout the planning of a project, are a key objective for project managers. However, traditional linear approaches fail to include and sufficiently serve the dynamic nature of activities duration. On this ground, attention should be paid to designing and implementing methodologies that approximate the duration of the activities during the phase of planning and scheduling too. The grey analysis mathematical modeling seems to gain grounds, since it gradually becomes a well-adapted and up-to-date technique for numerous scientific sectors. This paper examines the contribution of the logic behind the aforementioned analysis, aiming to predict possible future divergences of task durations in big construction projects. Based on time observations of critical instances, a conceptual method is developed for making duration estimations and communicating deviations from the original schedule, in a way that approximations will fit reality better. The whole procedure endeavors to investigate the decrease of uncertainty, regarding project completion time and reduce, up to a scale, a possible inaccurate estimation of a project manager. The utmost effort is about exploiting the gained experience and eliminating the “hedgehog syndrome”. This is attainable by designing a reliable, easily updated, and readable information system. An enlightening example is to be found in the last section.

  10. Benefit Evaluation of Implementing BIM in Construction Projects

    Science.gov (United States)

    Chou, Hui-Yu; Chen, Pei-Yu

    2017-10-01

    Since 2014, public construction projects in Taiwan have progressively undertaken steps to promote the use of Building Information Modelling (BIM) technology, the use of BIM has therefore become a necessity for contractors. However, issues such as the high upfront costs relating to software and hardware setup and BIM user training, combined with the difficulties of incorporating BIM into existing workflow operations and management systems, remain a challenge to contractors. Consequently, the benefits stemming from the BIM implementation in turn will affect the activeness and enthusiasm of contractors to implement BIM. While there have been previous studies abroad where the benefits relating to BIM implementation had been calculated and quantified numerically, a benefit evaluation index would require considerations for regional industry practices and characteristics. This study established a benefit evaluation index and method for the implementation of BIM suitable for contractors in Taiwan. The three main principal indexes are: (1) RCR means the effects of reducing costs associated with rework; (2) SDR & DPR mean the effects of mitigating delays that occur due to construction interface coordination or rework, as well as the effects of reducing the penalty costs associated with overdue delivery; (3) AQE means the effects of improving the ability to estimate the amounts of building materials and resources. This study also performed a benefit evaluation calculation of a real world case study construction project using the first two established indexes. The results showed a 0.16% reduction in rework costs, a 6.49% reduction in delays that occur from construction interface coordination or rework, and a 5.0% reduction in penalty costs associated with overdue deliveries. The results demonstrated the applicability of the benefit evaluation index established in this study for real world construction projects.

  11. Rural Residents’ Perception of Construction Project Delays in Pakistan

    Directory of Open Access Journals (Sweden)

    Shahid Hussain

    2017-11-01

    Full Text Available The construction industry is one of the key sectors that facilitate sustainable economic and social development in the region. Currently, community development mechanisms are adopted by many developed and developing nations, aimed at enhancing economic growth and quality of life along with social welfare of the local community. This study reviews the rural residents’ perception of public construction project delays and aims to explore economic and social challenges confronted by residents, especially in rural areas in Pakistan. A questionnaire with 26 factors identified from the literature was sent to rural educated residents. Through a questionnaire survey, the opinions of rural residents were sought and tested. Based on 366 (73% valid responses, this study examined the socio-economic influencing factors. The findings of the study revealed that problems faced while traveling, increase the price of consumer goods, high transportation costs, lack of educational opportunities, more expenditures on education, and barriers to primary healthcare access were the top most important factors. Research results confirmed that the delays in construction projects negatively affect the socio-economic conditions of the rural community, which directly influence the rural dwells’ sustainable life. The research findings suggest that the practitioners in public sector organization make sure to execute the project on time and within the quality. Otherwise, it has negative socio-economic implications for the rural community.

  12. The telemedicine spacebridge project: A joint US/Russian venture in long distance medicine via satellite

    Science.gov (United States)

    Zuzek, John E.; Cauley, Michael A.; Hollansworth, James E.

    1994-01-01

    The Telemedicine Spacebridge Demonstration Project is a joint U.S./Russian program whose purpose is to further the application of telemedicine both internationally, domestically, and in space. The system has been set up to use a Russian satellite over the Atlantic Ocean and a U.S. domestic satellite to allow physicians a two-way video and audio link between various sites of medical centers in the United States and the Central Hospital in Moscow, Russia. This paper contains a description of the project background, the Spacebridge system, the individual pieces of the system, and the operational experience gained thus far in the project.

  13. Ranking the Project Management Success Factors for Construction Project in South India

    Science.gov (United States)

    Aneesha, K.; Haridharan, M. K.

    2017-07-01

    In Today’s construction industry, to achieve a greater advantage over the firms, success of each project and efficiency is required. Effective Project Management overcomes these types of challenges. This study identifies the success factors which are important for project management in construction project success. From the literature review, 26 factors were found to be critical. Project managers, construction managers, civil engineers, contractors and site engineers were the respondents. After analyzing the data in SPSS software, the dominant factors from the regression analysis are top management support, competent project team, abilities to solve problems, realistic cost and time estimates, information/communication, competency of the project manager are the 6 factors out of 12 in 26 factors. Effective communication between stakeholders got highest priority and client involvement, good leadership, clarity of project goals got second priority. Informal communication gives better results compared to formal communications like written formats. To remove communication barrier with the stakeholders, informal communication like speaking face-to-face with the language this fits for the stakeholders.

  14. 42 CFR 137.275 - May Self-Governance Tribes include IHS construction programs in a construction project agreement...

    Science.gov (United States)

    2010-10-01

    ... 42 Public Health 1 2010-10-01 2010-10-01 false May Self-Governance Tribes include IHS construction... OF HEALTH AND HUMAN SERVICES TRIBAL SELF-GOVERNANCE Construction Purpose and Scope § 137.275 May Self-Governance Tribes include IHS construction programs in a construction project agreement or in a funding...

  15. Causal Factors of Corruption in Construction Project Management: An Overview.

    Science.gov (United States)

    Owusu, Emmanuel Kingsford; Chan, Albert P C; Shan, Ming

    2017-11-11

    The development of efficient and strategic anti-corruption measures can be better achieved if a deeper understanding and identification of the causes of corruption are established. Over the past years, many studies have been devoted to the research of corruption in construction management (CM). This has resulted in a significant increase in the body of knowledge on the subject matter, including the causative factors triggering these corrupt practices. However, an apropos systematic assessment of both past and current studies on the subject matter which is needful for the future endeavor is lacking. Moreover, there is an absence of unified view of the causative factors of corruption identified in construction project management (CPM). This paper, therefore, presents a comprehensive review of the causes of corruption from selected articles in recognized construction management journals to address the mentioned gaps. A total number of 44 causes of corruption were identified from 37 publications and analyzed in terms of existing causal factors of corruption, annual trend of publications and the thematic categorization of the identified variables. The most identifiable causes were over close relationships, poor professional ethical standards, negative industrial and working conditions, negative role models and inadequate sanctions. A conceptual framework of causes of corruption was established, after categorizing the 44 variables into five unique categories. In descending order, the five constructs are Psychosocial-Specific Causes, Organizational-Specific Causes, Regulatory-Specific Causes, Project-Specific Causes and Statutory-Specific Causes. This study extends the current literature of corruption research in construction management and contributes to a deepened understanding of the causal instigators of corruption identified in CPM. The findings from this study provide valuable information and extended knowledge to industry practitioners and policymakers as well as

  16. The UNOSAT-GRID Project: Access to Satellite Imagery through the Grid Environment

    CERN Document Server

    Méndez-Lorenzo, P; Lamanna, M; Meyer, X; Lazeyras, M; Bjorgo, E; Retiere, A; Falzone, A; Venuti, N; Maccarone, S; Ugolotti, B

    2007-01-01

    UNOSAT is a United Nations activity to provide access to satellite images and geographic system services for humanitarian operations for rescue or aid activities. UNOSAT is implemented by the UN Institute for Training and Research (UNITAR) and managed by the UN Office for Project Services (UNOPS). In addition, partners from different organizations constitute the UNOSAT consortium. Among these partners, CERN participates actively providing the required computational and storage resources. The critical part of the UNOSAT activity is the storage and processing of large quantities of satellite images. The fast and secure access to these images from any part of the world is mandatory during these activities. Based on two successful CERN-GRID/UNOSAT pilot projects (data storage/compression/download and image access through mobile phone), the GRIDUNOSAT project has consolidated the considerable work undertaken so far in the present activity. The main use case already demonstrated is the delivery of satellite images ...

  17. Measuring Carbon Footprint of Flexible Pavement Construction Project in Indonesia

    Directory of Open Access Journals (Sweden)

    Utomo Dwi Hatmoko Jati

    2018-01-01

    Full Text Available Road infrastructure in Indonesia is mainly dominated by flexible pavement type. Its construction process, however, has raised concerns in terms of its environment impacts. This study aims to track and measure the carbon footprint of flexible pavement. The objectives are to map the construction process in relation to greenhouse gas (GHG emissions, to quantify them in terms of carbon dioxide equivalents (CO2e as generated by the process of production and transportation of raw materials, and the operation of plant off-site and on-site project. Data collection was done by having site observations and interviews with project stakeholders. The results show a total emissions of 70.888 tonnes CO2e, consisting of 34.248 tonnes CO2e (48.31% off-site activities and 36.640 tonnes CO2e (51.687% on-site activities. The two highest CO2e emissions were generated by the use of plant for asphalt concrete laying activities accounted 34.827 tonnes CO2e (49.130%, and material transportation accounted 24.921 (35.155%. These findings provide a new perspective of the carbon footprint in flexible pavement and suggest the urgent need for the use of more efficient and environmentally friendly plant in construction process as it shows the most significant contribution on the CO2e. This study provides valuable understanding on the environmental impact of typical flexible pavement projects in Indonesia, and further can be used for developing green road framework.

  18. Motivating Students to Develop Satellites in a Problem and Project-Based Learning Environment

    DEFF Research Database (Denmark)

    Larsen, Jesper Abildgaard; Nielsen, Jens Frederik Dalsgaard; Zhou, Chunfang

    2013-01-01

    During the last decade, a total of three student satellites have been developed by engineering students in a Problem and Project-Based Learning (PBL) environment at Aalborg University (AAU), Denmark. As solving such a complex project, we emphasize that a high level of motivation is needed...... for the students. Thus some efforts have been done on project management style with this aim. However, it is necessary continuous to discuss this issue from the students’ perspective for a better PBL environment. This leads to the research question of how the students perceive their motivation in developing...... satellite projects in a PBL environment. Empirically, a total of 12 student participants were interviewed. The results show that students’ motivation is highly stimulated by the project management with a series of factors, such as the task characteristics, support of peers, help of supervisors, and openness...

  19. Effects of construction and operation of a satellite power system upon the magnetosphere

    Energy Technology Data Exchange (ETDEWEB)

    Chiu, Y.T.; Luhmann, J.G.; Schulz, M.; Cornwall, J.M.

    1979-12-01

    This is the final report of an initial assessment of magnetospheric effects of the construction and operation of a satellite power system. This assessment effort is based on application of present scientific knowledge rather than on original scientific research. As such, it appears that mass and energy injections of the system are sufficient to modify the magnetosphere substantially, to the extent of possibly requiring mitigation measures for space systems but not to the extent of causing major redirection of efforts and concepts. The scale of the SPS is so unprecedentedly large, however, that these impressions require verification (or rejection) by in-depth assessment based on scientific treatment of the principal issues. Indeed, it is perhaps appropriate to state that present ignorance far exceeds present knowledge in regard to SPS magnetospheric effects, even though we only seek to define the approximate limits of magnetospheric modifications here.

  20. The future obligations of "project manager" as construction integral director (DIPE) in the law of buildings construction in spain (LOE)

    OpenAIRE

    Soler Severino, Manuel Jose; Rubio Landart, Jaime

    2012-01-01

    In the year 1999 approves the Law of Construction Building (LOE, in Spanish) to regulate a sector such as construction, which contained some shortcomings from the legal point of view. Currently, the LOE has been in force 12 years, changing the spanish world of the construction, due to influenced by internationalization. Within the LOE, there regulating the different actors involved in the construction building, as the Projects design, the Director of Construction, the developer, The build...

  1. Using mobile computers to automate the inspection process for highway construction projects.

    Science.gov (United States)

    2013-12-01

    Highway construction projects are characterized by the large amount of data that needs to be collected, processed, and exchanged among the : different project participants. Collection of construction inspection data, in particular, allows field perso...

  2. Fuzzy Optimization of Construction Engineering Project Schedule Based on Critical Chain Management

    OpenAIRE

    Liu, Jianbing; Ren, Hong; Junshu DU

    2013-01-01

    Critical chain management was the very important theory innovation in the development of construction project schedule management field in recent years. Compared with the traditional methods of construction project schedule management, the methods of critical chain management considered resource constraints into construction project schedule management, the construction project cycle was shortened and the efficiency was enhanced by using the dynamic thinking and circulation pattern to manage ...

  3. 78 FR 18348 - Submission for OMB Review; Use of Project Labor Agreements for Federal Construction Projects

    Science.gov (United States)

    2013-03-26

    ...-scale construction projects, where the total cost to the Government is more than $25 million, in order to promote economy and efficiency in Federal procurement. A PLA is a pre-hire collective bargaining... achieving economy and efficiency in Federal procurement, producing labor-management stability, and ensuring...

  4. 77 FR 69627 - Information Collection; Use of Project Labor Agreements for Federal Construction Projects

    Science.gov (United States)

    2012-11-20

    ... appropriate, on large-scale construction projects, where the total cost to the Government is more than $25 million, in order to promote economy and efficiency in Federal procurement. A PLA is a pre-hire collective... Government's interest in achieving economy and efficiency in Federal procurement, producing labor-management...

  5. Individual Learning in Construction Projects: Professions and their Approaches

    Directory of Open Access Journals (Sweden)

    Alexander Styhre

    2010-10-01

    Full Text Available New materials, use of sophisticated technologies and increased customer demands, in combination with growing competition among construction companies, have led to a high organizational boundaries. The results indicate that personal networks are the most common source of learning for all professions. While clients, architects, and designers also engage in reading and attending courses, site managers and workers are less engaged in these activities. Experimenting and organizing for learning appear to be underutilized strategies by all professions. This leads to the conclusion that attempts to increase learning have to address the differences in learning behaviours of the various groups. Further, focus on experimenting and organizing for learning is a possibility to change the learning behaviour from learning as a consequence of problems to learning for future improvement.degree of specialization. For successful integration of the different professional specialists, there is a need for shared learning between project co-workers. Based on twenty eight interviews in six different Swedish construction projects, this paper illustrates strategies for individual and shared learning, among different actors and across various

  6. Construction Project Leadership from the Perspective of Islam

    National Research Council Canada - National Science Library

    Muhamad Rosdi Senam; Khairuddin Abdul Rashid; Azila Ahmad Sarkawi; Rapiah Mohd Zaini

    2014-01-01

    ... leaders and project managers today. Researchers in project management literature calls for more project leadership research as leadership now is increasingly recognised as project success factor...

  7. Identifying the Critical Factors Affecting Safety Program Performance for Construction Projects within Pakistan Construction Industry

    Directory of Open Access Journals (Sweden)

    Zubair Ahmed Memon

    2013-04-01

    Full Text Available Many studies have shown that the construction industry one of the most hazardous industries with its high rates of fatalities and injuries and high financial losses incurred through work related accident. To reduce or overcome the safety issues on construction sites, different safety programs are introduced by construction firms. A questionnaire survey study was conducted to highlight the influence of the Construction Safety Factors on safety program implementation. The input from the questionnaire survey was analyzed by using AIM (Average Index Method and rank correlation test was conducted between different groups of respondents to measure the association between different groups of respondent. The finding of this study highlighted that management support is the critical factor for implementing the safety program on projects. From statistical test, it is concluded that all respondent groups were strongly in the favor of management support factor as CSF (Critical Success Factor. The findings of this study were validated on selected case studies. Results of the case studies will help to know the effect of the factors on implementing safety programs during the execution stage.

  8. Construction

    Science.gov (United States)

    2002-01-01

    San Juan, PR Tren Urbano Subway Project, San Juan, PR U.S. Army South, San Juan, PR U.S. Coast Guard Housing Project, San Juan, PR U.S. Coast Guard...construction?, Foresight/CRISP Workshop on Nanotechnology, Royal Society of Arts . Cheltenham, England: 2001, p.5. 56 Concrete Proposals, Economist, July 24

  9. Innovative Organization of Project Activity of Construction Students

    Science.gov (United States)

    Stolbova, I. D.; Aleksandrova, E. P.; Krainova, M. N.

    2017-11-01

    The construction industry competitiveness depends on its equipping with information modeling technologies. This requires training and development of human resources. The advantages of BIM-technologies are considered. The requirements for the specialists capable of promoting information modeling technologies in the construction industry are discussed. For a wide application of BIM-technologies, the problem of training personnel with a new thinking must be solved. When preparing graduates of the major “Construction”, it is necessary to introduce innovative educational technologies aimed at building the students’ ability for team work, competences in the field of modern information and communication technologies, as well as design skills basing on spatial modeling. Graphic training is the first discipline of the professional orientation for construction students. In the context of training it is important to create such learning environment that is close to a professional one. The paper provides the examples of practice-oriented assignments based on the project method in the course of students’ independent work.

  10. Identifying Contractors’ Planned Quality Costs in Indonesian Construction Projects

    Directory of Open Access Journals (Sweden)

    Puti F. Marzuki

    2014-12-01

    Full Text Available In a very competitive construction industry, quality costs have to be measured to be able to identify potential quality problem areas and to focus attention on work output improvement opportunities. The awareness of contractors on the importance of quality costs could be reflected in the extent of their quality costs planning. This paper presents an identification of planned quality costs in three construction projects executed by two large Indonesian contractors, a state-owned company and a private company in Jakarta. The objective is to enable the contractors to elaborate their quality costs planning and thereby improve their work output based on the findi ngs. Quality costs are first grouped into three categories: prevention, appraisal, and failure costs. Based on the works of previous researchers, a list of quality management activities that should be covered in each quality costs category is then created. The contractors’ planned quality costs data for each category are identified and collected through interviews and questionnaire surveys that refer to the list. Quality costs are expressed as a percentage of contract value. It is revealed that although large contractors already have certain knowledge on quality costs in construction projects, these costs are not planned in a structured way through an analysis of systematic quality costs records. Through cost categorization it is also shown that higher prevention and appraisal costs lead to lower failure costs. It is then concluded that a lot of work is still to be done by the contractors to set up a quality costs recording system which can serve as a basis for their quality improvement planning.

  11. Role of PMC in Construction of Collector Well Project, a Case Study

    OpenAIRE

    Sarath. C

    2016-01-01

    The rapid expansion and intricacy in the construction industry cause difficulties in maintaining performance, time, and quality services of a construction project, which leads to the failure to meet the scope and objective of a project. In addition, improper planning, widespread dependence, and low availability of materials increase the cost of the construction project. To manage such issues, Project Management Consultancy is one of the management solutions that have been widely used. Project...

  12. Multi-model-based Access Control in Construction Projects

    Directory of Open Access Journals (Sweden)

    Frank Hilbert

    2012-04-01

    Full Text Available During the execution of large scale construction projects performed by Virtual Organizations (VO, relatively complex technical models have to be exchanged between the VO members. For linking the trade and transfer of these models, a so-called multi-model container format was developed. Considering the different skills and tasks of the involved partners, it is not necessary for them to know all the models in every technical detailing. Furthermore, the model size can lead to a delay in communication. In this paper an approach is presented for defining model cut-outs according to the current project context. Dynamic dependencies to the project context as well as static dependencies on the organizational structure are mapped in a context-sensitive rule. As a result, an approach for dynamic filtering of multi-models is obtained which ensures, together with a filtering service, that the involved VO members get a simplified view of complex multi-models as well as sufficient permissions depending on their tasks.

  13. Using Computers in Teaching: Telecourse Guide. A Pilot Project in Distance Learning by Satellite.

    Science.gov (United States)

    North Carolina State Dept. of Public Instruction, Raleigh. Div. of Educational Media.

    Part of a pilot project in distance learning by satellite in North Carolina, this telecourse is designed to increase teachers' awareness and understanding of how to use computers and instructional software in their teaching. The six 1-hour teleconference sessions in this telecourse include "live," interactive one-way video/two-way audio…

  14. Benefits of Building Information Modelling in the Project Lifecycle: Construction Projects in Asia

    Directory of Open Access Journals (Sweden)

    Jian Li

    2014-08-01

    Full Text Available Building Information Modelling (BIM is a process involving the creation and management of objective data with property, unique identity and relationship. In the Architecture, Engineering and Construction (AEC industry, BIM is adopted a lot in the lifecycle of buildings because of the high integration of information that it enables. Four-dimensional (4D computer-aided design (CAD has been adopted for many years to improve the construction planning process. BIM is adopted throughout buildings' lifecycles, in design, construction and operation. This paper presents five large-scale public and financial projects that adopt BIM in the design, construction and operational phases. Different uses of BIM are compared and contrasted in the context of the separate backgrounds. It is concluded that productivity is improved where BIM is used to enable easy sharing and integration of information and convenient collaboration.

  15. A Global Review of Sustainable Construction Project Financing: Policies, Practices, and Research Efforts

    Directory of Open Access Journals (Sweden)

    Ming Shan

    2017-12-01

    Full Text Available Despite the increasing investment in sustainable development over the past decade, a systematic review of sustainable construction project financing is lacking. The objectives of this paper are to conduct a systematic review to examine the policies, practices, and research efforts in the area of sustainable construction project financing, and to explore the potential opportunities for the future research. To achieve these goals, this paper first reviewed the sustainable construction project financing practices implemented by four representative developed economies including the United Kingdom, the United States, Singapore, and Australia. Then, this paper reviewed the efforts and initiatives launched by three international organizations including the United Nations, the Organization for Economic Co-operation and Development, and International Finance Corporation. After that, this paper reviewed the research efforts of sustainable construction project financing published in peer-review journals and books. This paper identified four major research themes within this area, which are the review of financial stakeholders and market of sustainable construction, benefits and barriers to sustainable construction project financing, financial vehicles for sustainable construction projects, innovative models and mechanisms for sustainable construction project financing. Additionally, this paper revealed five directions for the future research of sustainable construction project financing, which are the identification of financial issues in sustainable construction projects, the investigation of financial vehicles for sustainable construction projects in terms of their strengths, limitations, and performances, the examination of critical drivers for implementing sustainable construction project financing, the development of a knowledge-based decision support system for implementing sustainable construction financing, and the development of best practices for

  16. Optimizing strategy for repetitive construction projects within multi-mode resources

    Directory of Open Access Journals (Sweden)

    Remon Fayek Aziz

    2013-03-01

    Full Text Available Estimating tender data for specific project is the most essential part in construction areas as of a contractor’s view such as: proposed project duration with corresponding gross value and cash flows. Cash flow analysis of construction projects has a long history and has been an important topic in construction management. Determination of project cash flows is very sensitive, especially for repetitive construction projects. This paper focuses on how to calculate tender data for repetitive construction projects such as: project duration, project cost, project/bid price, project cash flows, project maximum working capital and project net present value that is equivalent to net profit at the beginning of the project. A simplified multi-objective optimization formulation will be presented that creates best tender data to contractor comparing with more feasible options that are generated from multi-mode resources in a given project. This mathematical formulation is intended to give more scenarios which provide a practical support for typical construction contractors who need to optimize resource utilization in order to minimize project duration, project/bid price and project maximum working capital while maximizing its net present value simultaneously. At the end of the paper, an illustrative example will be presented to demonstrate the applications of proposed technique to an optimization expressway of repetitive construction project.

  17. Architect Critical Challenges as a Project Manager in Construction Projects: A Case Study

    Directory of Open Access Journals (Sweden)

    Mohammadreza Yadollahi

    2014-01-01

    Full Text Available All construction professionals such as civil, mechanical, and electrical engineers, quantity surveyors, and architects have important roles in the construction process. Among these, architects are frequently appointed as a project manager (PM. The role of a PM will drive the success of the projects implementation. Therefore, the capability of an architect as a PM (ArPM is critical in reducing challenges encountered. Accordingly, the identification of these challenges is an important task in selecting an appropriate ArPM. The aim of this study is to identify the most critical challenges faced by an ArPM for construction projects. The data were collected through questionnaires and interviews with architects and professionals in the Malaysian construction industry. Because of the fuzziness and uncertainty of subjective responses, Fuzzy Set Ttheory is applied to identify critical challenges. A total of 65 questionnaires were distributed and 36 questionnaires were returned. The results revealed that the critical challenges faced by an ArPM are “poor planning,” “unfamiliar technology,” “unfamiliarity with green buildings and materials,” “inappropriate scheduling,” and “poor workmanship.” All critical challenges were then categorized into six main groups including technical, managerial, personal skills, contractual, psychological, and financial.

  18. Construction project scheduling with use of »Vico Control« as a part of virtual construction

    OpenAIRE

    Andrejka, Beno

    2009-01-01

    The present work focuses on contemporary approach in planning and scheduling construction project as a part of virtual construction with use of Vico software. In the first part we describe theoretical ideas of virtual construction and its benefits against classic way of planning and scheduling. The second part represents entire process of virtual construction step by step using referenced 3D model. The third part focuses on program Vico Control, a powerful software tool for scheduling constru...

  19. The C3PO project: a laser communication system concept for small satellites

    Science.gov (United States)

    d'Humières, Benoît; Esmiller, Bruno; Gouy, Yann; Steck, Emilie; Quintana, Crisanto; Faulkner, Graham; O'Brien, Dominic; Sproll, Fabian; Wagner, Paul; Hampf, Daniel; Riede, Wolfgang; Salter, Michael; Wang, Qin; Platt, Duncan; Jakonis, Darius; Piao, Xiaoyu; Karlsson, Mikael; Oberg, Olof; Petermann, Ingemar; Michalkiewicz, Aneta; Krezel, Jerzy; Debowska, Anna; Thueux, Yoann

    2017-02-01

    The satellite market is shifting towards smaller (micro and nanosatellites), lowered mass and increased performance platforms. Nanosatellites and picosatellites have been used for a number of new, innovative and unique payloads and missions. This trend requires new concepts for a reduced size, a better performance/weight ratio and a reduction of onboard power consumption. In this context, disruptive technologies, such as laser-optical communication systems, are opening new possibilities. This paper presents the C3PO1 system, "advanced Concept for laser uplink/ downlink CommuniCation with sPace Objects", and the first results of the development of its key technologies. This project targets the design of a communications system that uses a ground-based laser to illuminate a satellite, and a Modulating Retro-Reflector (MRR) to return a beam of light modulated by data to the ground. This enables a downlink, without a laser source on the satellite. This architecture suits well to small satellite applications so as high data rates are potentially provided with very low board mass. C3PO project aims to achieve data rates of 1Gbit/s between LEO satellites and Earth with a communication payload mass of less than 1kilogram. In this paper, results of the initial experiments and demonstration of the key technologies will be shown.

  20. Triple constraint considerations in the management of construction projects : a South African perspective

    OpenAIRE

    2013-01-01

    M.Ing. (Engineering Management) The triple constraint considerations in construction projects determine failure or success of projects. The key reasons of a winning project comprise of identification, monitoring, control and management of projects risks. Projects, over the years, failed to be completed within the contracted triple constraints. The persistent failure of construction projects in South Africa contributes to lack of development in skills and infrastructure. It is hypothesized ...

  1. The Study on Law Disputes in Construction Project Contract Relationship

    Science.gov (United States)

    Yang, Zhang

    Because the disputes and case facts of construction project contracts are intricate, there are many new conditions and problems involved in application of law, it's very difficult to dispose in the judicial practice with the difference in judicial theories and understanding spirit of the laws, and the juridical criterions of judgment are not unified in the courts of various regions. As judicial organs, people's courts should keep pace with the times, take precautions, and do well investigations and researches on such application of law in such cases in order to give full play to the judicial function, to safeguard the lawful rights and interests of disadvantaged groups and to promote the sustained, rapid and sound development of real estate market.

  2. Evaluation of tile layer productivity in construction project

    Science.gov (United States)

    Aziz, Hamidi Abdul; Hassan, Siti Hafizan; Rosly, Noorsyalili; Ul-Saufie, Ahmad Zia

    2017-10-01

    Construction is a key sector of the national economy for countries all over the world. Until today, construction industries are still facing lots of problems concerning the low productivity, poor safety and insufficient quality. Labour productivity is one of the factors that will give impact to the quality of projects. This study is focusing on evaluating the tile layer productivity in the area of Seberang Perai, Penang. The objective of this study is to determine the relationship of age and experience of tile layers with their productivity and to evaluate the effect of nationality to tile layers productivity. Interview and site observation of tile layers has been conducted to obtain the data of age, experience and nationality of tile layers. Site observation is made to obtain the number of tiles installed for every tile layer for the duration of 1 hour, and the data were analysed by using Statistical Package for Social Science (IBM SPSS Statistic 23) software. As a result, there is a moderate linear relationship between age and experience of tile layers with their productivity. The age of 30 and the experience of 4 years give the highest productivity. It also can be concluded that the tile layers from Indonesia tend to have higher productivity compared to tile layers from Myanmar.

  3. The Iodine Satellite (iSat) Project Development Towards Critical Design Review

    Science.gov (United States)

    Dankanich, John W.; Calvert, Derek; Kamhawi, Hani; Hickman, Tyler; Szabo, James; Byrne, Lawrence

    2015-01-01

    Despite the prevalence of small satellites in recent years, the systems flown to date have very limited propulsion capability. SmallSats are typically secondary payloads and have significant constraints for volume, mass, and power in addition to limitations on the use of hazardous propellants or stored energy. These constraints limit the options for SmallSat maneuverability. NASA's Space Technology Mission Directorate approved the iodine Satellite flight project for a rapid demonstration of iodine Hall thruster technology in a 12U (cubesat units) configuration under the Small Spacecraft Technology Program. The mission is a partnership between NASA MSFC, NASA GRC, and Busek Co, Inc., with the Air Force supporting the propulsion technology maturation. The team is working towards the critical design review in the final design and fabrication phase of the project. The current design shows positive technical performance margins in all areas. The iSat project is planned for launch readiness in the spring of 2017.

  4. Proton therapy construction projects in the United States

    Energy Technology Data Exchange (ETDEWEB)

    Alonso, J.R.

    1992-11-01

    Proton and heavy-ion radiation therapy has been taking place now for 40 years, at many accelerator laboratories around the world, essentially all of these centers built originally for physics research. The high degree of promise shown for using these particles for treating and curing cancer has stimulated the medical community to look seriously at building dedicated accelerator facilities in a hospital setting, where more rapid progress can be made in clinical research, and development of effective treatments with these beams. In the United States, the first such facility, at the Loma Linda University Medical Center, has been in operation now for two years, and is currently treating a total of 35 to 40 patients per day. Two new projects are being designed at present, one at the Massachusetts General Hospital in Boston, Massachusetts, the second a joint project of the Lawrence Berkeley Laboratory and the University of California at Davis Medical Center in Sacramento, California. This paper will discuss accelerator and beam characteristics relevant to the proton-therapy application, and will present performance and operations characteristics for the Loma Linda facility, as well as details of the plans, process and progress towards construction of the new facilities in Boston and Sacramento.

  5. On Student Motivation in a Problem and Project-Based Satellite Development and Learning Environment

    DEFF Research Database (Denmark)

    Larsen, Jesper Abildgaard; Nielsen, Jens Frederik Dalsgaard; Zhou, Chunfang

    2013-01-01

    During the past decade, students at Aalborg University have had the possibility to participate in the cross disciplinary, and cross semester project of building and launching a cubesat. However, as such a project easily can last from three to five years, from the initial development to the launch...... of the satellite, it is important to consider how to keep the different student groups, who have participated in the project motivated in further developing of their respective subsystems, as well as engage actively in knowledge transfer to new student groups....

  6. Exploring project managers’ perception of stress when working in increasingly complex construction projects

    Directory of Open Access Journals (Sweden)

    Jacqueline Mary Jepson

    2017-09-01

    Full Text Available Stress is a recognised feature of the project managers’ life. Projects are becoming more complex with the uncertainty in the system contributing to the lack of control and added stress. This study explores a microcosm of 25 project managers in the South Australian construction industry, their perceived level of uncertainty and stress. The project managers interviewed provide their views on what their key stressors were and the mechanisms they use to manage effectively their stress. The results showed that structural, technical and directional complexity of projects was high, but this did not always convert into more stress for the project managers. The results indicate that stressors like the lack of resources; lack of control and increasing accountability were project managers’ primary concerns. Coping strategies included optimism, applying emotional intelligence and active planning strategies. In addition, they reduced their stress by working with good teams, using theirs and their team's experience, implementing sound systems and processes and effectively researching and gathering information.

  7. Project management practice and its effects on project success in Malaysian construction industry

    Science.gov (United States)

    Haron, N. A.; Devi, P.; Hassim, S.; Alias, A. H.; Tahir, M. M.; Harun, A. N.

    2017-12-01

    The rapid economic development has increased the demand for construction of infrastructure and facilities globally. Sustainable development and globalization are the new ‘Zeitgeist’ of the 21st century. In order to implement these projects successfully and to meet the functional aim of the projects within their lifetime, an efficient project management practice is needed. The aim of this study is to identify the critical success factors (CSFs) and the extent of use of project management practice which affects project success, especially during the implementation stage. Data were obtained from self-administered questionnaires with 232 respondents. A mixed method of data collection was adopted using semi-structured interview and questionnaire approach. The result of the analysis of data obtained showed that new and emerging criteria such as customer satisfaction, competency of the project team, and performance of subcontractors/suppliers are becoming measures of success in addition to the classic iron triangle’s view of time, cost and quality. An insight on the extent of use of different project management practice in the industry was also achieved from the study.

  8. Direct Satellite Data Acquisition and its Application for Large -scale Monitoring Projects in Russia

    Science.gov (United States)

    Gershenzon, O.

    2011-12-01

    ScanEx RDC created an infrastructure (ground stations network) to acquire and process remote sensing data from different satellites: Terra, Aqua, Landsat, IRS-P5/P6, SPOT 4/5, FORMOSAT-2, EROS A/B, RADARSAT-1/2, ENVISAT-1. It owns image archives from these satellites as well as from SPOT-2 and CARTOSAT-2. ScanEx RDC builds and delivers remote sensing ground stations (working with up to 15 satellites); and owns the ground stations network to acquire data for Russia and surrounding territory. ScanEx stations are the basic component in departmental networks of remote sensing data acquisition for different state authorities (Roshydromet, Ministry of Natural Recourses, Emercom) and University- based remote sensing data acquisition and processing centers in Russia and abroad. ScanEx performs large-scale projects in collaboration with government agencies to monitor forests, floods, fires, sea surface pollution, and ice situation in Northern Russia. During 2010-2011 ScanEx conducted daily monitoring of wild fires in Russia detecting and registering thermal anomalies using data from Terra, Aqua, Landsat and SPOT satellites. Detailed SPOT 4/5 data is used to analyze burnt areas and to assess damage caused by fire. Satellite data along with other information about fire situation in Russia was daily updated and published via free-access Internet geoportal. A few projects ScanEx conducted together with environmental NGO. Project "Satellite monitoring of Especially Protected Natural Areas of Russia and its results visualization on geoportal was conducted in cooperation with NGO "Transparent World". The project's goal was to observe natural phenomena and economical activity, including illegal, by means of Earth remote sensing data. Monitoring is based on multi-temporal optical space imagery of different spatial resolution. Project results include detection of anthropogenic objects that appeared in the vicinity or even within the border of natural territories, that have never been

  9. Modelling of project cash flow on construction projects in Malang city

    Science.gov (United States)

    Djatmiko, Bambang

    2017-09-01

    Contractors usually prepare a project cash flow (PCF) on construction projects. The flow of cash in and cash out within a construction project may vary depending on the owner, contract documents, and construction service providers who have their own authority. Other factors affecting the PCF are down payment, termyn, progress schedule, material schedule, equipment schedule, manpower schedules, and wages of workers and subcontractors. This study aims to describe the cash inflow and cash outflow based on the empirical data obtained from contractors, develop a PCF model based on Halpen & Woodhead's PCF model, and investigate whether or not there is a significant difference between the Halpen & Woodhead's PCF model and the empirical PCF model. Based on the researcher's observation, the PCF management has never been implemented by the contractors in Malang in serving their clients (owners). The research setting is in Malang City because physical development in all field and there are many new construction service providers. The findings in this current study are summarised as follows: 1) Cash in included current assets (20%), owner's down payment (20%), termyin I (5%-25%), termyin II (20%), termyin III (25%), termyin IV (25%) and retention (5%). Cash out included direct cost (65%), indirect cost (20%), and profit + informal cost(15%), 2)the construction work involving the empirical PCF model in this study was started with the funds obtained from DP or current assets and 3) The two models bear several similarities in the upward trends of direct cost, indirect cost, Pro Ic, progress billing, and S-curve. The difference between the two models is the occurrence of overdraft in the Halpen and Woodhead's PCF model only.

  10. The Satellite based Monitoring Initiative for Regional Air quality (SAMIRA): Project summary and first results

    Science.gov (United States)

    Schneider, Philipp; Stebel, Kerstin; Ajtai, Nicolae; Diamandi, Andrei; Horalek, Jan; Nemuc, Anca; Stachlewska, Iwona; Zehner, Claus

    2017-04-01

    We present a summary and some first results of a new ESA-funded project entitled Satellite based Monitoring Initiative for Regional Air quality (SAMIRA), which aims at improving regional and local air quality monitoring through synergetic use of data from present and upcoming satellite instruments, traditionally used in situ air quality monitoring networks and output from chemical transport models. Through collaborative efforts in four countries, namely Romania, Poland, the Czech Republic and Norway, all with existing air quality problems, SAMIRA intends to support the involved institutions and associated users in their national monitoring and reporting mandates as well as to generate novel research in this area. The primary goal of SAMIRA is to demonstrate the usefulness of existing and future satellite products of air quality for improving monitoring and mapping of air pollution at the regional scale. A total of six core activities are being carried out in order to achieve this goal: Firstly, the project is developing and optimizing algorithms for the retrieval of hourly aerosol optical depth (AOD) maps from the Spinning Enhanced Visible and InfraRed Imager (SEVIRI) onboard of Meteosat Second Generation. As a second activity, SAMIRA aims to derive particulate matter (PM2.5) estimates from AOD data by developing robust algorithms for AOD-to-PM conversion with the support from model- and Lidar data. In a third activity, we evaluate the added value of satellite products of atmospheric composition for operational European-scale air quality mapping using geostatistics and auxiliary datasets. The additional benefit of satellite-based monitoring over existing monitoring techniques (in situ, models) is tested by combining these datasets using geostatistical methods and demonstrated for nitrogen dioxide (NO2), sulphur dioxide (SO2), and aerosol optical depth/particulate matter. As a fourth activity, the project is developing novel algorithms for downscaling coarse

  11. Decisive management in selecting locations for development of construction projects

    Science.gov (United States)

    Szafranko, E.; Pawłowicz, J. A.

    2017-08-01

    The location of an investment project is one of the most important decisions in the construction and land development business. The shape of a new building and aspects of its future use depend on making a good choice of a land plot where it will be constructed. There are many characteristics involved descriptions of land available for development. On the one hand, different buildings (with different envisaged use) fit differently to a given location. Residential homes, for example, require a location which will ensure a peaceful lifestyle, with places for walks and recreation, situated in a relatively quite setting. On the other hand, close proximity to schools, shops or a health clinic is another important consideration. Industrial buildings should be localized so as not to be a nuisance to others, and their location should facilitate efficient transport of raw materials and ready products. Yet other requirements are defined for public buildings. It is therefore evident that the characteristics included in an evaluation of the location of a planned building can be highly diverse and their diversity makes the evaluation difficult. Selection of a location can be supported by a variety of methods. For instance, an evaluation can rely on assigning points which indicate the fulfillment of certain criteria. This approach generates a complex evaluation in the form of tables and maps of usefulness. Another possibility is to make an assessment of the criteria that a given land parcels should satisfy in order to develop a specific type of a building. Having combined these two sets of information, we can create a system or a model for the management of land resources, which will easily help to support decision making processes pertaining to the choice of a location. This article shows a model approach for a specific building.

  12. Project Hermes 'Use of Smartphones for Receiving Telemetry and Commanding a Satellite'

    Science.gov (United States)

    Maharaja, Rishabh (Principal Investigator)

    2016-01-01

    TCPIP protocols can be applied for satellite command, control, and data transfer. Project Hermes was an experiment set-up to test the use of the TCPIP protocol for communicating with a space bound payload. The idea was successfully demonstrated on high altitude balloon flights and on a sub-orbital sounding rocket launched from NASAs Wallops Flight Facility. TCPIP protocols can be applied for satellite command, control, and data transfer. Project Hermes was an experiment set-up to test the use of the TCPIP protocol for communicating with a space bound payload. The idea was successfully demonstrated on high altitude balloon flights and on a sub-orbital sounding rocket launched from NASAs Wallops Flight Facility.

  13. Research of Automatic Progress Report Generation for Railway Construction Projects in China

    Directory of Open Access Journals (Sweden)

    Qing Li

    2015-01-01

    Full Text Available The rapid construction of railways in China has posed tremendous challenges for managing railway construction projects, especially their progress. Frequently changed schedule, complicated contents, and error-prone data have practically hampered the efforts to automatically generate progress reports on railway construction projects within the country. In this paper, we set out to explore the linkages among current data from Chinese railway construction units on inspection lots, construction drawings, and construction schedules, which are used to establish an engineering quantity computation model and automatic project progress report model. An automatic progress report generation system for railway construction projects was developed to generate a wide range of standard progress reports. Practical applications showed that the proposed system offers an alternative to hardware-based methods of progress report generation and can significantly improve the accuracy of data and the quality of management regarding project progress.

  14. Interorganizational communication and ICT in construction projects: a review using metatriangulation

    NARCIS (Netherlands)

    Adriaanse, Adriaan Maria; Voordijk, Johannes T.

    2005-01-01

    Although communication is of vital importance in construction projects, the construction industry is confronted with great communication difficulties and an ineffective use of information and communication technology (ICT) systems. In this study, the objective is to analyse obstacles and

  15. Planetary Basalt Construction of a Launch/Landing Pad - PISCES Project Update

    Science.gov (United States)

    Kelso, R. M.

    2015-10-01

    Provide a briefing on the progress of a joint project between the PISCES and NASA to develop and demonstrate technologies associated with planetary robotic construction using basalt: called “Additive Construction with Mobile Emplacement” (ACME).

  16. Neural network computing model for highway construction project scheduling and management : final report, October 1999.

    Science.gov (United States)

    1999-10-01

    A general mathematical formulation has been developed for scheduling of construction projects and applied to the problem of highway construction scheduling. Repetitive and non-repetitive tasks, work continuity considerations, multiple-crew strategies...

  17. Estimating Required Contingency Funds for Construction Projects using Multiple Linear Regression

    National Research Council Canada - National Science Library

    Cook, Jason J

    2006-01-01

    Cost overruns are a critical problem for construction projects. The common practice for dealing with cost overruns is the assignment of an arbitrary flat percentage of the construction budget as a contingency fund...

  18. Development of a conceptual success factors model for construction projects: a case of Lithuania

    OpenAIRE

    Gudiene, Neringa; Banaitis, Audrius; Banaitienė, Nerija; Lopes, Jorge

    2013-01-01

    This paper aims to develop a conceptual critical success factors model for construction projects in Lithuania. The concept of success of construction projects and literature review of critical success factors is discussed in the first part. Conceptual model adapted to Lithuania is developed and its elements are described in the second part. Grouped decision-making matrix for the multiple criteria analysis of critical success factors of construction projects is presented at the end of pa...

  19. Sprinkle Treatment experimental project construction and three year evaluation.

    Science.gov (United States)

    1989-06-01

    This report documents the construction of a Sprinkle Treatment field trial on a high speed/high volume roadway (55 mph/8520 ADT) and presents the performance data obtained for three years after construction. Normal plant and roadway production rates ...

  20. BIM integration in education: A case study of the construction technology project Bolt Tower Dolni Vitkovice

    Science.gov (United States)

    Venkrbec, Vaclav; Bittnerova, Lucie

    2017-12-01

    Building information modeling (BIM) can support effectiveness during many activities in the AEC industry. even when processing a construction-technological project. This paper presents an approach how to use building information model in higher education, especially during the work on diploma thesis and it supervision. Diploma thesis is project based work, which aims to compile a construction-technological project for a selected construction. The paper describes the use of input data, working with them and compares this process with standard input data such as printed design documentation. The effectiveness of using the building information model as a input data for construction-technological project is described in the conclusion.

  1. Impact of Construction Health & Safety Regulations on Project ...

    African Journals Online (AJOL)

    The effectiveness of the construction industry can only be enhanced by repositioning the construction health and safety regulations to safeguard the health of the workers and the entire community. This paper seeks to assess the views of consultants and contractors about the impact of construction health and safety ...

  2. The use of interorganisational ict in construction projects : a critical perspective

    NARCIS (Netherlands)

    Adriaanse, Adriaan Maria

    2007-01-01

    In construction projects, many participants from different organisations have to work together. In these projects – to facilitate cooperation and coordination – interorganisational communication is of vital importance. The use of Information and Communication Technology (ICT) can offer many benefits

  3. Competency-based selection and assignment of human resources to construction projects

    National Research Council Canada - National Science Library

    V Shahhosseini; M H Sebt

    2011-01-01

      As part of human resource management policies and practices, construction firms need to define competency requirements for project staff, and recruit the necessary team for completion of project assignments...

  4. Evaluation model of project complexity for large-scale construction projects in Iran - A Fuzzy ANP approach

    Directory of Open Access Journals (Sweden)

    Aliyeh Kazemi

    2016-09-01

    Full Text Available Construction projects have always been complex. By growing trend of this complexity, implementations of large-scale constructions become harder. Hence, evaluating and understanding these complexities are critical. Correct evaluation of a project complication can provide executives and managers with good source to use. Fuzzy analytic network process (ANP is a logical and systematic approach toward defining, evaluation, and grading. This method allows for analyzing complex systems, and determining complexity of them. In this study, by taking advantage of fuzzy ANP, effective indexes for development of complications in large-scale construction projects in Iran have been determined and prioritized. The results show socio-political, project system interdependencies, and technological complexity indexes ranked top to three. Furthermore, in comparison of three main huge projects: commercial-administrative, hospital, and skyscrapers, the hospital project had been evaluated as the most complicated. This model is beneficial for professionals in managing large-scale projects.

  5. Development and Application of Linear Scheduling Techniques to Highway Construction Projects

    OpenAIRE

    Harmelink, D. J.; Yamin, Rene Antonio

    2001-01-01

    Crucial to the successful outcome of major highway construction and reconstruction projects today is the ability to accurately plan, predict and control the construction process. Evermore sensitive to budget control, schedule control, resource allocation and impacts on the motoring public, highway constructors today require sophisticated project management tools to achieve project goals. One of the tools recently being used across the country is project scheduling. The use of scheduling techn...

  6. 7 CFR 4280.149 - Requirements after project construction.

    Science.gov (United States)

    2010-01-01

    ... system. (4) A summary of the cost of operating and maintaining the facility. (5) A description of any... future similar projects. (7) Actual jobs created or saved. (b) Energy efficiency improvement projects...

  7. Analysis of Air Force Wartime Contracted Construction Project Performance

    Science.gov (United States)

    2015-03-26

    ranged from locals and the Afghan National Army interfering with the project, to a swine flu 22 outbreak halting progress on several projects for... 1918 ). Furthermore, the contractor’s risk is based on its ability to provide an accurate estimate that will adequately cover its costs, yield a small...locals and the Afghan National Army interfering with the project, to a swine flu outbreak halting progress on several projects for multiple days. Most

  8. SATSIM—A real-time multi-satellite simulator for test and validation in formation flying projects

    Science.gov (United States)

    Bodin, Per; Nylund, Matti; Battelino, Milan

    2012-05-01

    The satellite simulator SATSIM was developed during the experimental PRISMA multi-satellite formation flying project and was primarily aimed to validate the Guidance, Navigation and Control system (GNC) and the on-board software in a simulated real-time environment. The SATSIM system has as a main feature the ability to simulate sensors and actuators, spacecraft dynamics, intra-satellite communication protocols, environmental disturbances, solar illumination conditions as well as solar and lunar blinding. The core of the simulator consists of MATLAB/Simulink models of the spacecraft hardware and the space environment. The models run on a standard personal computer that in the simplest scenario may be connected to satellite controller boards through a CAN (Controller Area Network) data bus. SATSIM is, in conjunction with the RAMSES Test and Verification system, able to perform open-loop, hardware-in-the-loop as well as full-fledged closed-loop tests through the utilisation of peripheral sensor unit simulators. The PRISMA satellites were launched in June 2010 and the project is presently in its operational phase. This paper describes how a low cost but yet reliable simulator such as the SATSIM platform in different configurations has been used through the different phases of a multi-satellite project, from early test of onboard software running on satellite controller boards in a lab environment, to full-fledged closed-loop tests of satellite flight models.

  9. The Evolution of Successful Satellite Science to Air Quality Application Projects: From Inception to Realization

    Science.gov (United States)

    Soja, A. J.

    2012-12-01

    Teams of scientist have been working for almost a decade with state, local, regional and federal Air Quality regulators and scientists on several projects that have been focused on improving biomass burning emissions within our nation's National Emissions Inventory (NEI). Initially, the NEI was based strictly on ground-based information that often used data aggregated from previous years reported at the county-centroid and completely ignored the spatial domain of all fires. This methodology resulted in gross inaccuracies; however it was an ingrained system and the users and organizations were largely comfortable. Improvements were viewed as too costly. Our task was to convince regulators, managers and users of the value that could be added by using satellite data to enhance the NEI. Certainly, there were individuals that understood the value of using satellite data, but they needed support to convince the establishment of the intrinsic, cost-effective value of publically-available satellite data. It was essential to present arguments, as well as requested verification and validation statistics, in the format that most suited the objectives of application organizations. This process incorporated: knowledge of state-of-the-art satellite data, algorithms and science; a working knowledge of the users applications and requirements; interacting with individuals with a variety of skill sets and goals; and perhaps most importantly, listening to the goals and responsibilities of the user community and fully communicating. Today, the Environmental Protection Agency and several state and regional organizations are using satellite data to estimate biomass burnings emissions at daily and annual scales for a number of critical environmental management and policy activities including regulation setting and regional strategy development for attainment of the National Ambient Air Quality Standards (NAAQS). We continue to work at the local, state and federal levels to improve the

  10. Examining the Challenging Hindrances facing in the Construction Projects: South India’s Perspective

    Science.gov (United States)

    Subramanyam, K.; Haridharan, M. K.

    2017-07-01

    Developing countries like India require a huge infrastructure to facilitate needs of the people. Construction industry provides several opportunities to the individuals. Construction manager work is to supervise and organize the construction activities in construction projects. Now a day construction manager facing challenges. This paper aimed to study the challenges facing by the construction manager in the perception of construction professionals. 39 variables were taken from the literature review which found to be severe impact on construction managers’ performance. Construction manager, project manager and site engineers are the respondents for this survey. Using SPSS, regression analysis was done and recognized significant challenges. These challenges were classified into 5 domains. In management challenges, resource availability and allocation, risks and uncertainties existing in the project onsite, top management support and cost constraints are the most significant variables. In skills requirement of a construction manager challenges, technical skills required to learn and adapt new technology in the project, decision making and planning according to the situation in site are the most significant variables. In performance challenges, implementation of tasks according to the plan is the important variable whereas in onsite challenges, manage project risks, develop project policies and procedures are the most important.

  11. Measuring the effects of using ICT/BIM in construction projects

    DEFF Research Database (Denmark)

    Lambrecht, Jan Fuglsig; Vestergaard, Flemming; Karlshøj, Jan

    2016-01-01

    studies in Denmark, with focus on the method and how it effectively can be used to complete case studies documenting the effects of using ICT/BIM in construction projects. The case studies completed involved construction projects in which the participating companies were client consultants, architects...

  12. Interim Project Financing in the Nigerian Construction Industry ...

    African Journals Online (AJOL)

    Out of the 47 variables identified through a structured survey, that can adversely affect the construction industry in Nigeria, “the difficulties in securing credit for interim construction finance on reasonable terms”, is ranked as the 6th most important factor, while “client's unwillingness to pay for advance for mobilization and ...

  13. Claims in international construction projects in Ethiopia and case ...

    African Journals Online (AJOL)

    One of the main observations of this research work has been the fact that the Ethiopian construction industry seriously lack qualified engineering professionals with an appropriate level of training in construction management, international contract administration and claims handling. Finally the findings of the study are ...

  14. identifying the critical causes of conflict in construction projects

    African Journals Online (AJOL)

    user

    2016-04-02

    Apr 2, 2016 ... NIGERIA. 2 DEPARTMENT OF ARCHITECTURE AND CIVIL ENGINEERING, CITY UNIVERSITY OF HONG KONG, HONG KONG. E-mail addresses: 1 ... related phases- briefing, design, construction and post-construction. The completion of these ..... 4.2 Non Parametric test. A test for normality of data was ...

  15. A case study on the feasibility and performance of an UWB-AoA real time location system for resources management of civil construction projects

    Science.gov (United States)

    Mok, Esmond; Xia, Linyuan; Retscher, Guenther; Tian, Hui

    2010-06-01

    The application of integrated satellite and modern wireless positioning technologies for ubiquitous real-time resources management in large scale civil engineering projects can greatly optimize the time and cost in the construction process, and is now the trend for modern construction project management. As the outdoor conditions of most civil construction sites are open to sky, satellite positioning with the popularly used Global Positioning System (GPS) has been proved to be very efficient and effective. However, the condition in indoor and underground construction site is very complicated due to the fact that different construction activities would be carried out in different congested areas, involving heavy construction plant, equipment, professionals and technical personnel. Nowadays different emerging technologies such as Wi-Fi and ZigBee can be adopted for position and tracking in indoor environments. Nevertheless, under the very complicated construction site conditions these technologies may fail due to movement of human resources and construction plant, variation of metrological conditions, and serious multipath effects of signals. It is considered that Ultra Wide Band (UWB) technology is more suitable for indoor construction site environments. In this paper, a case study on the attempt of integrating GPS with Ubisense Real-time Location System (RTLS) for resources management in an underground railway construction site is discussed. Laboratory and field tests have shown that the RTLS can provide better resources management capability in terms of positioning accuracy and stability than Wi-Fi and ZigBee technologies under complicated construction environments. The test results show that the system can normally achieve better than 15 cm accuracy, and better than 1 m under adverse geometrical site condition. However, the high instrumental set up cost and the requirement for high quality data transmission cable for high precision time synchronization between

  16. Recent Trends of the Tropical Hydrological Cycle Inferred from Global Precipitation Climatology Project and International Satellite Cloud Climatology Project data

    Science.gov (United States)

    Zhou, Y. P.; Xu, Kuan-Man; Sud, Y. C.; Betts, A. K.

    2011-01-01

    Scores of modeling studies have shown that increasing greenhouse gases in the atmosphere impact the global hydrologic cycle; however, disagreements on regional scales are large, and thus the simulated trends of such impacts, even for regions as large as the tropics, remain uncertain. The present investigation attempts to examine such trends in the observations using satellite data products comprising Global Precipitation Climatology Project precipitation and International Satellite Cloud Climatology Project cloud and radiation. Specifically, evolving trends of the tropical hydrological cycle over the last 20-30 years were identified and analyzed. The results show (1) intensification of tropical precipitation in the rising regions of the Walker and Hadley circulations and weakening over the sinking regions of the associated overturning circulation; (2) poleward shift of the subtropical dry zones (up to 2deg/decade in June-July-August (JJA) in the Northern Hemisphere and 0.3-0.7deg/decade in June-July-August and September-October-November in the Southern Hemisphere) consistent with an overall broadening of the Hadley circulation; and (3) significant poleward migration (0.9-1.7deg/decade) of cloud boundaries of Hadley cell and plausible narrowing of the high cloudiness in the Intertropical Convergence Zone region in some seasons. These results support findings of some of the previous studies that showed strengthening of the tropical hydrological cycle and expansion of the Hadley cell that are potentially related to the recent global warming trends.

  17. Constrained projections of high northern latitudinal photosynthesis increase by satellite observations of vegetation greenness

    Science.gov (United States)

    Winkler, Alexander J.; Myneni, Ranga; Brovkin, Victor

    2017-04-01

    Satellite observations of the last three decades provide strong evidence that the Earth is greening. Especially in northern high latitudes, a substantial increase of the leaf area index (LAI), an indicator of greening, is observed. For these regions, it is assumed that plant growth benefits from higher temperature (radiative effect) and rising atmospheric CO2 concentration (CO2 fertilization effect). This greening trend, in terms of increasing LAI, is also simulated by various global ecosystem models. We also found a persistent greening trend analyzing historical simulations of Earth system models (ESM) participating in Phase 5 of the Coupled Model Intercomparison Project (CMIP5). However, a wide spread in magnitude of an associated increase of terrestrial gross primary production (GPP) among the ESMs is found, and thus contributes to pronounced uncertainties in projections of future climate change. Here we demonstrate that the tight correlation between enhanced GPP of high northern latitudinal ecosystems and their LAI sensitivity to both key environmental factors, temperature and CO2 concentration, opens up the possibility of an Emergent Constraint on plant photosynthesis. Combining this almost linear relationship across the ensemble of CMIP5 models with the LAI trends in the long-term satellite records, we are able to constrain projections of vegetation growth increase for respective ecosystems.

  18. A Lean Framework for Production Control in Complex and Constrained Construction Projects (PC4P)

    DEFF Research Database (Denmark)

    Lindhard, Søren Munch; Wandahl, Søren

    2014-01-01

    Production conditions in construction are different than in themanufacturing industry. First of all, construction is rooted in place and conducted as on-site manufacturing. Secondly, every construction project is unique and a one-of-a-kind production, managed by a temporary organization consisting...

  19. The role of logistics service providers in large scale construction projects

    OpenAIRE

    Stein, Benjamin

    2012-01-01

    The construction industry unlike other industries such as manufacturing has a difficult time adopting ‘best practices’ to improve upon their processes on and off the construction sites. Especially logistics management for construction projects is assumed to have the potential for significant cost savings. Reasons for a slow progression can be seen within the fragmented industry with many parties involved in carrying out a project and the relationships throughout the whole supply chain. In ...

  20. Measuring the effects of using ICT/BIM in construction projects

    DEFF Research Database (Denmark)

    Lambrecht, Jan Fuglsig; Vestergaard, Flemming; Karlshøj, Jan

    2016-01-01

    This paper focuses on presenting part of the findings from a research project completed in the period of 2009-2013.The research project was funded by the Danish Building & Property Agency with the primary aim to identify and measure the economic effects of using ICT/BIM in construction projects....... Firstly, this paper presents a conceptual evaluation method developed in order to define and describe how case studies focusing on use of ICT/BIM in construction projects could be completed in order to measure (both quantitatively and qualitatively) the effects achieved from using ICT/BIM in construction...... projects. In this context effects are defined both as tangible and intangible effects (both economically and non-economically) directly and/or indirectly as a consequence of using ICT/BIM in a construction project. Secondly, the paper presents and analyses findings achieved from completing four case...

  1. Identifying the most critical project complexity factors using Delphi method: the Iranian construction industry

    Directory of Open Access Journals (Sweden)

    Mohammad Mehdi Mozaffari

    2012-09-01

    Full Text Available Complexity is one of the most important issues influencing success of any construction project and there are literally different studies devoted to detect important factors increasing complexity of projects. During the past few years, there have been growing interests in developing mass construction projects in Iran. The proposed study of this paper uses Delphi technique to find out about important factors as barriers of construction projects in Iran. The results show that among 47 project complexity factors, 19 factors are more important than others are. The study groups different factors into seven categories including environmental, organizational, objectives, tasks, stakeholders, technological, information systems and determines the relative importance of each. In each group, many other sub group activities are determined and they are carefully investigated. The study provides some detailed suggestions on each category to reduce the complexity of construction project.

  2. Trans-Pacific HDR Satellite Communications Experiment Phase-2 Project Plan and Experimental Network

    Science.gov (United States)

    Hsu, Eddie; Kadowaki, Naoto; Yoshimura, Naoko; Takahashi, Takashi; Yoshikawa, Makoto; Bergman, Larry; Bhasin, Kul

    2000-01-01

    The trans-Pacific high data rate (TP-HDR) satellite communications experiment was proposed at the Japan-U.S. Cooperation in Space (JUCS) Program Workshop held in Hawaii in 1993 and remote high definition video post-production was demonstrated as the first phase trial. ATM-based 45 Mbps trans-Pacific link was established in the first phase, and the following experiments with 155 Mbps was planned as the phase 2. This paper describes the experimental network configuration and project plan of TP-HDR experiment phase 2. Additional information is provided in the original.

  3. The impact of contractual and collaboration forms on risk management in Swedish construction projects

    OpenAIRE

    Osipova, Ekaterina

    2007-01-01

    In order to be able to carry out a construction project with the expected final result, professional risk management as well as a conscious risk sharing among the actors in the project are required. A question of a particular interest for the actors in Swedish construction industry is the way in which project risk management needs to be further developed, based more on openness, trust and collaboration rather than on sharp contract formulations. The objective of the study is to investigate th...

  4. Risk management in the different phases of a construction project:a study of actors' involvement

    OpenAIRE

    Osipova, Ekaterina

    2007-01-01

    The results from a questionnaire survey of risk management in the different phases of a construction project are presented. The participants of the study were clients, contractors and consultants working in Sweden. We analysed the involvement of these actors in the project phases, their roles in the risk management process in particular and their influence on risk management. We show that the planning and production phases of a construction project are the most important for risk management, ...

  5. School Building Projects: Managing Insurance and Contracts during Construction

    Science.gov (United States)

    Shands, Richard

    2011-01-01

    Managing the risks inherent in a building project presents a challenge and opportunities not often encountered in the ordinary affairs of a school district. A building project brings the district, its staff, and students, as well as the community, in close contact with architects and engineers and a number of contractors for a period of time often…

  6. Model for setting priority construction project objectives aligned with ...

    African Journals Online (AJOL)

    A comprehensive model based on priority project objectives aligned with monetary incentives, and agreed upon by built environment stakeholders was developed. A web survey was adopted to send out a questionnaire to nationwide participants, including contractors, quantity surveyors, project managers, architects, and ...

  7. KEDO LWR construction project and application of nuclear export control to the project

    Energy Technology Data Exchange (ETDEWEB)

    Kim, J. S.; Lee, J. W.; Kim, K. J.; Min, K. S.; Choi, Y. M. [KAERI, Taejon (Korea, Republic of)

    2001-10-01

    The nuclear crisis caused by the inconsistency included in DPRK's intial report to the IAEA has passed many stages such as DPRK's declaration to withdraw from NPT and rejection of the IAEA special inspection, etc. Finally, US and DPRK had singed to the Agreed Framework which has several responsibilities to be implemented by each sides. One of them is to supply 2 LWR to the DPRK in place of the freeze of graphite moderated reactors that were operating or constructing in DPRK at that time. As an implementing organization, KEDO has been established. KEPCO, the main contrator of KEDO, is constructing the KEDO Reactor unit 1 at Kumho site according to the Supply Agreement between KEDO and DPRK. It means that the nuclear items such as facilities, equipments, nuclear material and related technology have to transferred to DPRK under the domestic nuclear export control regulation. This paper is prepared to overview the KEDO LWR project with the view of export control and review on the national nuclear export control policies, license requirements, and DDCC management.

  8. Fusion of satellite-based imager and sounder data to construct supplementary high spatial resolution narrowband IR radiances

    Science.gov (United States)

    Weisz, Elisabeth; Baum, Bryan A.; Menzel, W. Paul

    2017-07-01

    Polar-orbiting weather satellite platforms generally include an imager and a sounder. With a data fusion method that uses these sensors, we demonstrate the ability to construct infrared (IR) absorption narrowband radiances at imager resolution. While a sensor such as MODIS has multiple IR absorption bands, the current visible infrared imaging radiometer suite (VIIRS) imager has only IR window bands. We show fusion results for IR radiances at 4.52 μm (CO2), 6.72 μm (H2O), and 13.94 μm (CO2) by comparing MODIS observed and constructed radiances for these bands. Both regional and global results are analyzed, with radiance differences tending to be fairly low and unbiased. Similar bands are constructed from VIIRS and CrIS data, with regional and global results shown. With this approach, it will be possible to improve continuity in derived cloud products over the generations of polar-orbiting weather satellite sensors and continue applications that require IR absorption bands.

  9. The communication in industrialised building system (IBS) construction project: Virtual environment

    Science.gov (United States)

    Pozin, Mohd Affendi Ahmad; Nawi, Mohd Nasrun Mohd

    2017-10-01

    Large portion of numbers team organization in the IBS construction sector is known are being fragmented. That is contributed from a segregation of construction activity thus create team working in virtually. Virtual team are the nature when teams are working in distributed area, across culture and time. Therefore, teams can be respond to the task without relocating to the site project and settle down a problem through information and communication technology (ICT). The emergence of virtual team are carry out by advancements in communication technologies as a medium to improve project team communication in project delivery process on IBS construction. Based on literature review from previous study and data collected from interviewing, this paper aim to identified communication challenges among project team members according to current project development practices in IBS construction project. Hence, in attempt to develop effective communication through the advantages of virtual team approach for IBS construction project. In order to ensure the data is gathered comprehensively and accurately, the data was collected from project managers by using semi structured interview method. It was found that virtual team approach could be enable competitive challenges on complexity in the construction project management process.

  10. THE MODELLING OF ORGANIZATIONAL STRUCTURES OF MANAGEMENT BY REALIZING INVESTMENT CONSTRUCTION PROJECTS

    Directory of Open Access Journals (Sweden)

    Олег Александрович КУЧМА

    2016-03-01

    Full Text Available The authors consider the modeling of organizational structures by virtue of interaction between the basic participants by realizing of investment construction projects. This process is directed at the complex analysis of a problem of quality management by creating of building goods taking into account modern project management tendencies. The topicality of problem is obvious as by realizing of investment construction projects there is a liberal share of uncompleted projects, and in the completed projects actual values considerably exceed budgeted capital expenditures. The introduced model allows managing the project per quality system in all phases of the investment construction project‘s life cycle. It promotes refinement of building goods, improves the rate of successfully completed projects with actual values near budgeted.

  11. Maturity of project management in construction companies with the use of fuzzy numbers

    Science.gov (United States)

    Klaus-Rosińska, Agata; Kuchta, Dorota

    2017-07-01

    The main aim of the article is to describe issue of maturity in project management regarding construction companies. Taking into consideration this problem the literature research was made, existing project management maturity models were analyzed, model of maturity in project management (using fuzzy numbers approach) was described and tested. The results of testing stage are shown in the case study.

  12. Areas of application for 3D and 4D models on construction projects

    NARCIS (Netherlands)

    Hartmann, Timo; Gao, Ju; Fischer, Martin

    2010-01-01

    In recent years more and more construction projects used three-dimensional/four-dimensional (3D/4D) models to support management tasks. However, project managers still struggle with evaluating how the 3D/4D model technology can be most efficiently applied on their specific project. One main reason

  13. An Energy Model for Sustainable Decision-Making in Road Construction Projects

    OpenAIRE

    Krantz, Jan; Lu, Weizhuo; Johansson, Tim; Olofsson, Thomas

    2014-01-01

    Road construction operations often require considerable amounts of energy in the form of fossil fuels, thus generating considerable greenhouse gas (GHG) emissions. While fuel efficiency of the heavy construction equipment is extensively studied, limited attention is given to how the construction process can be planned in order to reduce energy use and GHG-emissions. In this paper a conceptual model is proposed for the assessment of energy use and GHG-emission in road construction projects. Wh...

  14. Identifying factors causing cost overrun of the construction projects ...

    Indian Academy of Sciences (India)

    , these are especially severe in developing countries. In India as per MOSPI report, 235 projects out of 410 were severely affected cost overrun due to certain factors. A short questionnaire was conducted with 15 prominent factorsresponsible ...

  15. Locally Constructed Analogs (LOCA) Daily CMIP5 Climate Projections

    Data.gov (United States)

    US Bureau of Reclamation, Department of the Interior — This archive contains 64 projections of daily LOCA CMIP5 climate over the contiguous United States. This archive includes these meteorological variables at 1/16th...

  16. "SeismoSAT" project state of the art: connecting seismic data centres via satellite

    Science.gov (United States)

    Pesaresi, Damiano; Lenhardt, Wolfgang; Rauch, Markus; Zivcic, Mladen; Steiner, Rudolf; Bertoni, Michele

    2014-05-01

    Since 2002 the OGS (Istituto Nazionale di Oceanografia e di Geofisica Sperimentale) in Udine (Italy), the Zentralanstalt für Meteorologie und Geodynamik (ZAMG) in Vienna (Austria), and the Agencija Republike Slovenije za Okolje (ARSO) in Ljubljana (Slovenia) are using the Antelope software suite as the main tool for collecting, analyzing, archiving and exchanging seismic data in real time, initially in the framework of the EU Interreg IIIa Italia-Austria project "Trans-national seismological networks in the South-Eastern Alps". The data exchange has proved to be effective and very useful in case of seismic events near the borders between Italy, Austria and Slovenia, where the poor single national seismic networks coverage precluded a correct localization, while the usage of common data from the integrated networks improves considerably the overall reliability of real time seismic monitoring of the area. At the moment the data exchange between the seismic data centres relies on internet: this however is not an ideal condition for civil protection purposes, since internet reliability is poor. For this reason in 2012 the Protezione Civile della Provincia Autonoma di Bolzano in Bolzano (Italy) joined OGS, ZAMG and ARSO in the Interreg IV Italia-Austria project "SeismoSAT" aimed in connecting the seismic data centres in real time via satellite. As it will be illustrated, the general technical schema of the project has been approved, data bandwidths and monthly volumes required have been quantified, the common satellite provider has been selected, the hardware has been purchased and installed, and the all SeismoSAT project is in testing phase.

  17. Impact of senior design project for the development of leadership and management skills in construction management

    Science.gov (United States)

    Chowdhury, Tamara

    2013-08-01

    Senior design courses are a core part of curricula across engineering and technology disciplines. Such courses offer Construction Management (CMG) students the opportunity to bring together, assimilate and apply the knowledge they have acquired over their entire undergraduate academic programme to an applied technical project. Senior or Capstone design course engages students in a real-world project, enhance leadership development, and prepare to manage and lead project teams. The CMG programme's multidisciplinary approach at Alabama A&M University, combines essential components of construction techniques with concepts of business management to develop technically qualified individuals for responsible management roles in the design, construction and operation of major construction projects. This paper analyses the performance of the students and improvement due to the interaction with the faculty advisors and industrial panel during the two semester Capstone project. The results of this Capstone sequence have shown a continuous improvement of student performance.

  18. Practical application of Earned Value Method to evaluation of progress status of medium size construction projects

    Science.gov (United States)

    Czemplik, A.

    2017-10-01

    Earned Value Method (EVM) became in recent years the global standard for describing of the current time/budget status of engineering projects. It is the most preferred tool by international construction arbitrage bodies, in case the advancement of the construction project for a given date must be defined in a commonly recognizable way. Application of the method in every day site practice needs 2-3 people team dedicated just for that task, so the EVM it is used rather for large projects. However, using of the method in its reduced scale, as presented in the paper, can be fully economic also for medium size construction projects and provides set of information that can be very helpful for site managers in decision making processes. The numerical example of EVM used for medium size apartment construction project has been presented in the paper to illustrate the proposed concept of using EVM to the reduced extend.

  19. Determining Success Criteria and Success Factors for International Construction Projects for Malaysian Contractors

    Directory of Open Access Journals (Sweden)

    Ali Mohammed Alashwal

    2017-06-01

    Full Text Available The success of international construction projects is fraught with various challenges such as competitiveness, lack of resources, versatile global economy, and specific conditions in the host country. Malaysian contractors have been venturing into global construction market since early 1980s. However, their venturing was not successful all the time. The number of international projects awarded to Malaysian contractors has reduced drastically during the past decade. Taking advantage of this experience, this paper aims to identify the success criteria and success factors of international construction projects. The data was collected from 120 respondents using a questionnaire survey and analysed using principal component analysis and regression analysis. The results revealed three principal criteria of project success namely, Management Success, Functional Success, and Organisation Success. The main components of success factors include Team Power and Skills, Resource Availability, External Environment, Organisation Capability, Project Support, and Project Organisation. Further analysis emphasized the importance of strong financing capacity of contractors, project social environment, and competence of the project manager in achieving project success. The results of this paper can serve as a guideline for contractors and project managers to achieve success in this context. Future studies may provide in-depth analysis of success criteria and success factors specific for construction project type and host-country location.

  20. Assuring health and safety performance on construction projects ...

    African Journals Online (AJOL)

    Mr. Innocent Musonda, Senior Lecturer, ,Department of Construction Management ... dangerous workplaces, because of the high incidence of accidents ..... Ave = 6.60. SD. = 0.34. Commitment. Involvement. Competence. Leadership. 7.00. 6.00. 5.00. 4.00. 3.00. 2.00. 1.00. 0.00. On designers. On contractor top management.

  1. An Assessment Of Compliance Of Building Construction Projects ...

    African Journals Online (AJOL)

    Nigeria recorded and has continued to witness collapse of structures in recent times, most of which are building structures characterized with eventual loss of life and property. The rigorous construction activities in Nigeria bear direct and indirect impacts on the environment by displacement of communities and destruction of ...

  2. Distinction of Concept and Discussion on Construction Idea of Smart Water Grid Project

    Science.gov (United States)

    Ye, Y.; Yizi, S., Sr.; Lili, L., Sr.; Sang, X.; Zhai, J.

    2016-12-01

    Smart water grid project includes construction of water physical grid consisting of various flow regulating infrastructures, construction of water information grid in line with the trend of intelligent technology and construction of water management grid featured by system & mechanism construction and systemization of regulation decision-making. It is the integrated platform and comprehensive carrier for water conservancy practices. Currently, there still is dispute over engineering construction idea of smart water grid which, however, represents the future development trend of water management and is increasingly emphasized. The paper, based on distinction of concept of water grid and water grid engineering, explains the concept of water grid intelligentization, actively probes into construction idea of Smart water grid project in our country and presents scientific problems to be solved as well as core technologies to be mastered for smart water grid construction.

  3. Teaching practical leadership in MIT satellite development class: CASTOR and Exoplanet projects

    Science.gov (United States)

    Babuscia, Alessandra; Craig, Jennifer L.; Connor, Jane A.

    2012-08-01

    For more than a decade, the Aeronautics and Astronautics Department at MIT has offered undergraduate students the opportunity of conceiving, developing, implementing and operating new spacecraft's missions. During a three term class, junior and senior students experience all the challenges of a true engineering team project: design, analysis, testing, technical documentation development, team management, and leadership. Leadership instruction is an important part of the curricula; through the development of leadership skills, students learn to manage themselves and each other in a more effective way, increasing the overall productivity of the team. Also, a strong leadership education is a key factor in improving the abilities of future engineers to be effective team members and leaders in the companies and agencies in which they will work. However, too often leadership instruction is presented in an abstract way, which does not provide students with suggestions for immediate applicability. As a consequence, students underestimate the potential that leadership education can have on the development of their projects. To counteract that effect, a new approach for teaching "practical" leadership has been developed. This approach is composed of a set of activities developed to improve students' leadership skills in the context of a project. Specifically, this approach has been implemented in the MIT satellite development class. In that class, students experienced the challenges of building two satellites: CASTOR and Exoplanet. These two missions are real space projects which will be launched in the next two years, and which involve cooperation with different entities (MIT, NASA, and Draper). Hence, the MIT faculty was interested in developing leadership activities to improve the productivity of the teams in a short time. In fact, one of the key aspects of the approach proposed is that it can be quickly implemented in a single semester, requiring no more than 4 h of

  4. Procession: using intelligent 3D information visualization to support client understanding during construction projects

    Science.gov (United States)

    North, Steve

    2000-02-01

    The latest results in the development of the software tool 'Procession' is presented. The research underlying Procession delivers a conceptual 3D framework for the interpretation of non-physical construction industry processes. Procession is the implementation of the proposed 3D framework, as an information visualization software tool. The conceptual transformation of construction clients' informational needs into 3D visual structures is documented. Also discussed is the development of an 'intelligent' software process to calculate the relevance of individual project elements. This is used to determine the representation of project elements within a 3D surface. Construction is not short of technologies for visualizing physical building models. However, it would seem that little or no consideration has been given to improving the intelligibility of non-physical construction processes. This type of information is usually known as Project Planning data and is concerned with the individual tasks that make up construction projects. While, there are software applications that allow access to this data for the professional members of the project team, clients are currently without a suitable tool. Procession's data surface is an abstract representation of three selected project dimensions. Its 3D progress reports provide construction clients with an 'at-a-glance' indication of project 'health'.

  5. Identification of Tools and Techniques to Enhance Interdisciplinary Collaboration During Design and Construction Projects.

    Science.gov (United States)

    Keys, Yolanda; Silverman, Susan R; Evans, Jennie

    2017-10-01

    The purpose of this study was to collect the perceptions of design professionals and clinicians regarding design process success strategies and elements of interprofessional engagement and communication during healthcare design and construction projects. Additional objectives were to gather best practices to maximize clinician engagement and provide tools and techniques to improve interdisciplinary collaboration for future projects. Strategies are needed to enhance the design and construction process and create interactions that benefit not only the project but the individuals working to see its completion. Meaningful interprofessional collaboration is essential to any healthcare design project and making sure the various players communicate is a critical element. This was a qualitative study conducted via an online survey. Respondents included architects, construction managers, interior designers, and healthcare personnel who had recently been involved in a building renovation or new construction project for a healthcare facility. Responses to open-ended questions were analyzed for themes, and descriptive statistics were used to provide insight into participant demographics. Information on the impressions, perceptions, and opportunities related to clinician involvement in design projects was collected from nurses, architects, interior designers, and construction managers. Qualitative analysis revealed themes of clinician input, organizational dynamics, and a variety of communication strategies to be the most frequently mentioned elements of successful interprofessional collaboration. This study validates the need to include clinician input in the design process, to consider the importance of organizational dynamics on design team functioning, and to incorporate effective communication strategies during design and construction projects.

  6. The construction project manager in South Africa: Analysis of ...

    African Journals Online (AJOL)

    Data analysis was done using Microsoft Excel 2003®. Three areas of knowledge were identified, namely project management knowledge, industry-specific knowledge and knowledge through experience. Of these, industry-specific knowledge was considered the most important, although all three were very important.

  7. The construction project manager in South Africa: Analysis of ...

    African Journals Online (AJOL)

    Verster & Zulch (2009: 12-15), Butler & Cantrell (as cited in Robbins,. 1996: 357) and Culp & Smith (1992: 68-69). These organisational elements are addressed as they accentuate the importance of industry-specific knowledge and how it influences project success. Kerzner (2013) states that organisational factors such as ...

  8. causes of conflicts in construction projects in nigeria

    African Journals Online (AJOL)

    user

    financial projections on the client's side was identified as the most significant cause of conflicts. Furthermore, it was found that ... support strong recommendations on the need for effective management of finance on the client side, and engagement of ...... conflict in public–private partnerships – A case study of Bygga Villa, ...

  9. Wartime Construction Project Outcomes as a Function of Contract Type

    Science.gov (United States)

    2016-07-01

    and cost-reimbursable contracts, this article seeks to understand better the differences in contractor behaviors across contract types in a wartime...categories of construction uncertainty should sway the contract type decision. They found that FFP contracts were an appropriate mechanism for con...Factors Horizontal Work (concrete and/or asphalt) Building Foundation (concrete/rebar/ soils ) Electrical (high and low voltage, comm lines/outlets

  10. Construction Projects Focus on Evaluation and Its Benefits by Pre-planning

    DEFF Research Database (Denmark)

    Larsen, Jesper Kranker; Ussing, Lene Faber; Brunø, Thomas Ditlev

    2013-01-01

    Evaluation and pre-planning are two critical factors which give the project organization and project manager the opportunity to plan, and avoid unexpected situations in the construction process before it starts. The aim of this study is to answer the following two questions: how often are evaluat......Evaluation and pre-planning are two critical factors which give the project organization and project manager the opportunity to plan, and avoid unexpected situations in the construction process before it starts. The aim of this study is to answer the following two questions: how often...

  11. Hibernia development project: Development of the construction site

    Energy Technology Data Exchange (ETDEWEB)

    Woodhead, H.R. (Newfoundland Offshore Development Constructors, St. John' s, NF (Canada))

    1993-01-01

    The Hibernia oil field, 315 km southeast of St. John's, Newfoundland, is located on the Grand Banks in 80 m of water and is estimated to contain ca 525 million bbl of recoverable oil. A concrete gravity base structure (GBS) is being built to develop the oil field. The GBS has a diameter of over 100 m and a height of 111 m and weighs over 500,000 tonnes. The GBS will be constructed in a drydock facility being developed at Bull Arm in Trinity Bay, Newfoundland. The site development engineering at the construction site, design and construction of the dry dock berm, and the building of the two main marine quays at the site are described. The dry dock berm is ca 500 m long and 14 m deep, contains over 400,000 m[sup 3] of rock and 280,000 m[sup 3] of impervious till, and is believed to be the largest in North America. The quays were built using a patented system of precast concrete blocks. The accommodation camp, which will become the 12th largest town in Newfoundland when completed, is also briefly discussed. 10 figs.

  12. Optimizing strategy software for repetitive construction projects within multi-mode resources

    Directory of Open Access Journals (Sweden)

    Remon Fayek Aziz

    2013-09-01

    Full Text Available Estimating tender data for specific project is the most essential part in construction areas as of contractor’s view such as: proposed project duration with corresponding gross value and cash flows. This paper focuses on how to calculate tender data using Optimizing Strategy Software (OSS for repetitive construction projects with identical activity’s duration in case of single number of crew such as: project duration, project/bid price, project maximum working capital, and project net present value of the studied project. A simplified multi-objective optimization software (OSS will be presented that creates best tender data to contractor compared with more feasible options generated from multi-mode resources in a given project. OSS is intended to give more scenarios which provide practical support for typical construction contractors who need to optimize resource utilization in order to minimize project duration, project/bid price, and project maximum working capital while maximizing its net present value simultaneously. OSS is designed by java programing code system to provide a number of new and unique capabilities, including: (1 Ranking the obtained optimal plans according to a set of planner specified weights representing the relative importance of duration, price, maximum working capital and net present value in the analyzed project; (2 Visualizing and viewing the generated optimal trade-off; and (3 Providing seamless integration with available project management calculations. In order to provide the aforementioned capabilities of OSS, the system is implemented and developed in four main modules: (1 A user interface module; (2 A database module; (3 A running module; (4 A connecting module. At the end of the paper, an illustrative example will be presented to demonstrate and verify the applications of the proposed software (OSS to an optimization expressway of repetitive construction project.

  13. Common risks affecting time overrun in road construction projects in Palestine: Contractors’ perspective

    Directory of Open Access Journals (Sweden)

    Ibrahim Mahamid

    2013-06-01

    Full Text Available The construction sector is one of the key economic sectors and is the main force motivating the Palestinian national economy. However, it suffers from number of problems that affect time, cost and quality performances. This study aims at identifying the common risks affecting time overrun in road construction projects in the West Bank in Palestine from contractors’ viewpoint. 45 factors that might cause delays of road construction projects were defined through a detailed literature review. A questionnaire survey was performed to rank the considered factors in terms of severity and frequency. The analysis of the survey indicated that the top risks affecting time overrun in road construction projects in Palestine are: financial status of the contractors, payments delay by the owner, political situation, segmentation of the West Bank, poor communication between construction parties, lack of equipment efficiency, and high competition in bids.

  14. Challenges of the expansive use of Building Information Modeling (BIM in construction projects

    Directory of Open Access Journals (Sweden)

    Hannele Kerosuo

    2015-06-01

    Full Text Available Building information modeling (BIM is an emerging modeling technology which challenges existing work procedures and practices in the construction industry. In this article we study the challenges, problems and potential expansions of BIM as a tool in the design, construction and operation of buildings. For this purpose the interfaces between different parties are examined in Finnish construction projects. The methodological approach of the study is cultural-historical activity theory, according to which a new artifact becomes a mediating instrument when the participatory subjects reconfigure the entire activity. The implementation of BIM is now spreading from the design activity to other phases of the construction projects, but its use is still limited in the projects' other three interfaces. BIM is an evolving set of software developed for various purposes which is locally 'combined' to fit the circumstances and capabilities of the stakeholders of the construction process.

  15. BIM integration in education: A case study of the construction technology project Bolt Tower Dolni Vitkovice

    Directory of Open Access Journals (Sweden)

    Venkrbec Vaclav

    2017-12-01

    Full Text Available Building information modeling (BIM can support effectiveness during many activities in the AEC industry. even when processing a construction-technological project. This paper presents an approach how to use building information model in higher education, especially during the work on diploma thesis and it supervision. Diploma thesis is project based work, which aims to compile a construction-technological project for a selected construction. The paper describes the use of input data, working with them and compares this process with standard input data such as printed design documentation. The effectiveness of using the building information model as a input data for construction-technological project is described in the conclusion.

  16. A geographic information system to predict soil erosion potential in rural transportation construction project

    Science.gov (United States)

    1995-06-30

    Topographic surface modeling using a Geographic Information System (GIS) can be useful for the prediction of soil erosion resulting from highway construction projects. The assumption is that terrain, along with other parameters, will influence the po...

  17. SpiderFab: Process for On-Orbit Construction of Kilometer-Scale Apertures Project

    Data.gov (United States)

    National Aeronautics and Space Administration — This project develops a process for automated on-orbit construction of very large structures and multifunctional components. The foundation of this process is a...

  18. Systematic procedures to determine incentive/disincentive dollar amounts for highway transportation construction projects [research brief].

    Science.gov (United States)

    2012-06-01

    The Federal Highway Administration (FHWA) has encouraged state transportation agencies (STAs) to implement Incentive/Disincentive (I/D) contracting provisions for early project completion to minimize traffic disruption during highway construction. Th...

  19. A Study of Factors Caused for Time & Cost Overruns in Construction Project & their Remedial Measures

    National Research Council Canada - National Science Library

    Mr. Salim S. Mulla; Mr. Salim S. MullaProf. Ashish P. Waghmare

    2015-01-01

    .... How to achieve this task is a problem, which should be solved. The overall objective of this study is to identify the factors resposinle for overruns in time and cost of the construction project and suggest the suitable remedial solutions. Poor planning, implementation and management are the main reasons for time and cost overruns in construction projects in India. Since most of the reasons are well known and can be controlled if a proper arrangement is made.

  20. Information System Specific in Achievement of Construction Projects

    Directory of Open Access Journals (Sweden)

    Cătălin Onuţu

    2005-01-01

    Full Text Available Because of the economic changes from our country and also of the rapid adjusting necessity to the requirement of a market economy, it is observed a huge request for information, and especially techniques, tools, methodologies that would facilitate the managerial activity in any field. In the construction field the problem is even more serious because of specific aspects and of the traditional information system that is very stiff. Formal and bureaucratic, and this makes the adjusting process of specialist to the economic realities to be more difficult.

  1. Examples of actions that improve partnering cooperation among the participants of construction projects

    Science.gov (United States)

    Radziszewska-Zielina, E.; Szewczyk, B.

    2017-10-01

    The aim of the article is to present examples of actions that can be undertaken in order to improve partnering cooperation in construction projects. These actions are a practical supplementation to the previously developed fuzzy system of controlling partnering relations in construction projects. The actions relate to 18 parameters of partnering relations that describe cooperation between a general contractor or a company that manages the project and four other participants: the contractors (subcontractors), the designer, the material and equipment suppliers and the real estate developer. The actions have been listed based on a review of subject literature, self-analysis, as well as interviews with participants of construction projects. They can provide examples of good practices that maintain partnering cooperation at a high level. Good cooperation, in turn, translates into a better performance of the project.

  2. Large Scale Construction Project Innovative Management Through 5-S

    Directory of Open Access Journals (Sweden)

    Hashim Hj. Abdul Ghani Mohd.

    2014-11-01

    Full Text Available It has been well-recognised that Japanese construction firms are good in safety, hygiene, quality, productivity and image. Over the last century, the Japanese have formalised the technique and name it as '5S' Practice. Through his research in Japan in 1988, the author has re-define the name as '5-S' and developed the world's first 5-S Audit Checklist. Since 1993, he used an innovative 5-S Checklist developed at SIRIM for training and consultancy in no less than 20 countries with over 100,000 persons from around 8,000 organisations world-wide. The objective of this paper is to explain the intricacy of the 5-S so that it can be understood easily and adopted readily by those who may find the tool useful. Some experience will also be shared in this article. It is hoped that this article can arouse the interest of the construction industry in Malaysia to take up this important and effective tool for quality improvement.

  3. Relevance of Partnering as an Alternative Approach to Management of Construction Projects in Ghana

    Science.gov (United States)

    Ansah, Samuel Kwame; Awere, Eric; Edu-Buandoh, Kobina Badu Micah

    2016-01-01

    Understandably, clients in both the public and the private sectors in Ghanaian construction industry have become increasingly dissatisfied. What they see is unpredictability and under-performance. What they receive is too often of poor quality, late and over-priced. More often contractors enter the construction project focusing on achieving their…

  4. Integrated surface management for pipeline construction: The Mid-America Pipeline Company Four Corners Project

    Science.gov (United States)

    Maria L. Sonett

    1999-01-01

    Integrated surface management techniques for pipeline construction through arid and semi-arid rangeland ecosystems are presented in a case history of a 412-mile pipeline construction project in New Mexico. Planning, implementation and monitoring for restoration of surface hydrology, soil stabilization, soil cover, and plant species succession are discussed. Planning...

  5. An Innovative Time-Cost-Quality Tradeoff Modeling of Building Construction Project Based on Resource Allocation

    Directory of Open Access Journals (Sweden)

    Wenfa Hu

    2014-01-01

    Full Text Available The time, quality, and cost are three important but contradictive objectives in a building construction project. It is a tough challenge for project managers to optimize them since they are different parameters. This paper presents a time-cost-quality optimization model that enables managers to optimize multiobjectives. The model is from the project breakdown structure method where task resources in a construction project are divided into a series of activities and further into construction labors, materials, equipment, and administration. The resources utilized in a construction activity would eventually determine its construction time, cost, and quality, and a complex time-cost-quality trade-off model is finally generated based on correlations between construction activities. A genetic algorithm tool is applied in the model to solve the comprehensive nonlinear time-cost-quality problems. Building of a three-storey house is an example to illustrate the implementation of the model, demonstrate its advantages in optimizing trade-off of construction time, cost, and quality, and help make a winning decision in construction practices. The computational time-cost-quality curves in visual graphics from the case study prove traditional cost-time assumptions reasonable and also prove this time-cost-quality trade-off model sophisticated.

  6. Construction of quantum caps in projective space PG( r, 4) and quantum codes of distance 4

    Science.gov (United States)

    Li, Ruihu; Fu, Qiang; Guo, Luobin; Li, Xueliang

    2016-02-01

    Constructions of quantum caps in projective space PG( r, 4) by recursive methods and computer search are discussed. For each even n satisfying n≥282 and each odd z satisfying z≥275, a quantum n-cap and a quantum z-cap in PG(k-1, 4) with suitable k are constructed, and [[n,n-2k,4

  7. Defense Infrastructure: DOD Needs Clearer Guidance on Notifying Congress of Privately Financed Construction Projects

    Science.gov (United States)

    2017-01-01

    fast food restaurants . Because these projects are not authorized and funded through the regular appropriations process for military construction...DeCAD 20-9, Facilities Sustainment and Construction Program (April 30, 1999). Page 8 GAO-17-76 Nonappropriated Fund Construction which in...CO Pet kennel 2.6 Aug 2015 Canceled Public Private Venture USN Naval Air Station Pensacola, FL Quick service restaurant 1.8 Aug 2015 Not yet

  8. Sex Difference in Bottlenose Dolphin Sightings during a Long-term Bridge Construction Project

    OpenAIRE

    Ann Weaver

    2015-01-01

    Almost nothing is known about the effect of long-term bridge construction on free-ranging bottlenose dolphins (Tursiops truncatus). The species’ natural history predicts that there should be sex differences in reaction to construction because bottlenose dolphins show sex differences in most of their behaviors. A 5-year bridge construction project over a narrow but important dolphin corridor at John’s Pass tidal inlet, St. Petersburg FL, brought chronic environmental changes. The purpose of th...

  9. EVALUATION OF EFFECTIVENESS OF MANAGING CONSTRUCTION PROJECT REALIZATION UNDER THE INFLUENCE OF RANDOM FACTORS

    Directory of Open Access Journals (Sweden)

    Sborshchikov Sergey Borisovich

    2017-11-01

    Full Text Available Subject: the article proposes the methods for flexible regulation of administrative and organizational-technical relations between participants of the construction process which are based on integrated management contracts to address the issues related to realization of investment-construction projects in due time and within the funding limit under the influence of random factors. Research objectives: development of a conceptual simulation model of the process of making managerial decisions within the framework of realization of investment-construction project taking into account uncertainty. Materials and methods: We used the principles of the theory of control of technical and manufacturing systems, cybernetics, and also the methods of organizational, logical-semantic and simulation modeling, the works of domestic and foreign scholars on the problem under study. Results: by creating a functional simulation model for realization of investment-construction project, the construction process is considered as an iterative activity that is characterized by a list of indicators describing the state of the project at each control point. Controlled parameters include: planned indicators of the start and end date, and also the cost of execution of works depending on the project realization option (nomenclature of works, material and technical resources, labor intensity, machine capacity. Also, we characterize the basic criteria for efficiency of managerial influence on the realization of construction projects. Conclusions: we substantiated the necessity of taking into account the influence of random factors in the process of realization of investment-construction projects to determine more accurate predictive estimates of cost and duration of construction, especially for objects financed at the expense of state funds and built on the “fixed” contract price.

  10. Project-Based Learning and Student Knowledge Construction during Asynchronous Online Discussion

    Science.gov (United States)

    Koh, Joyce Hwee Ling; Herring, Susan C.; Hew, Khe Foon

    2010-01-01

    Project-based learning engages students in problem solving through artefact design. However, previous studies of online project-based learning have focused primarily on the dynamics of online collaboration; students' knowledge construction throughout this process has not been examined thoroughly. This case study analyzed the relationship between…

  11. THE THEORETIC-METHODOLOGICAL TOOLS OF EFFECTIVE ESTIMATION OF ORGANIZATION TECHNOLOGICAL SOLUTIONS OF CONSTRUCTION PROJECT

    Directory of Open Access Journals (Sweden)

    E. Yu. Antipenko

    2010-03-01

    Full Text Available In the article the structural analysis of efficiency indices elements of organization-and-technology solutions of construction project scheduling is executed for preparation of high-quality base of providing the planning processes and subsequent realization of the projects.

  12. Effectiveness of Innovation Leadership Styles: A Manager’s Influence on Ecological Innovation in Construction Projects

    OpenAIRE

    Bossink, Bart A.G.

    2004-01-01

    This article presents four basic innovation leadership styles: charismatic, instrumental, strategic and interactive innovation leadership. The leadership styles and their characteristics relate to process and product innovations in construction projects. A theoretical framework - which synthesizes these relations enables explorative research into the effects of leadership on organizational innovativeness. Four case studies, observing the same manager in four comparable projects, explore the e...

  13. Data processing project management in the construction of plants and power stations

    Energy Technology Data Exchange (ETDEWEB)

    Huelsen, H.; Hayen, W.

    1987-12-01

    The requirements of project management in plant construction i.e. basic data, supervision and control became more and more detailed. These requirements can only satisfactorily be met with the help of data processing. Piping design requires up to 50% of the whole amount of engineering in design and management of plant construction. We present data processing project management system which explains the connections of single aspects. Its connections consists of: collection of basic data, plant design and installation, supervision of planning and installation, planning and calculation, collection, use, administration and approval of plan data, procurement material, construction of the model (1:25), and installation. (orig.)

  14. Evaluating Levels of Project Planning and their Effects on Performance in the Nigerian Construction Industry

    Directory of Open Access Journals (Sweden)

    Godwin Idoro

    2012-11-01

    Full Text Available This study compares the level of project planning on public andprivate sectors projects and its impact on performance. Thepurpose is to create awareness of the level and effectivenessof the planning done by public and private clients in the deliveryof construction projects. A questionnaire survey administeredto a sample of 130 client representatives selected by stratifi edrandom sampling from the population of public and private clientsin the Nigerian construction industry is used and analysed usingdescriptive statistics, the t-test and Spearman correlation test. Theresults show that the level of preconstruction planning on privatesector projects is higher than that of public sector projects whilethe level of contract planning done by the latter is higher thanthat of the former. Furthermore, the performance of private sectorprojects is higher than that of public sector projects in many of theparameters used. However, the level of preparation of life-cyclecharts that concern project delivery time in both public and privatesectors projects is low and the level of project planning in the twocategories of projects has a limited impact on project performance.The understanding of how public and private sectors projectsperform in planning and its impact are expected to assist publicand private clients to know the challenges ahead of them in theireffort to improve the planning and performance of their projects.

  15. Safety risk assessment using analytic hierarchy process (AHP) during planning and budgeting of construction projects.

    Science.gov (United States)

    Aminbakhsh, Saman; Gunduz, Murat; Sonmez, Rifat

    2013-09-01

    The inherent and unique risks on construction projects quite often present key challenges to contractors. Health and safety risks are among the most significant risks in construction projects since the construction industry is characterized by a relatively high injury and death rate compared to other industries. In construction project management, safety risk assessment is an important step toward identifying potential hazards and evaluating the risks associated with the hazards. Adequate prioritization of safety risks during risk assessment is crucial for planning, budgeting, and management of safety related risks. In this paper, a safety risk assessment framework is presented based on the theory of cost of safety (COS) model and the analytic hierarchy process (AHP). The main contribution of the proposed framework is that it presents a robust method for prioritization of safety risks in construction projects to create a rational budget and to set realistic goals without compromising safety. The framework provides a decision tool for the decision makers to determine the adequate accident/injury prevention investments while considering the funding limits. The proposed safety risk framework is illustrated using a real-life construction project and the advantages and limitations of the framework are discussed. Copyright © 2013 National Safety Council and Elsevier Ltd. All rights reserved.

  16. Comparing the major project management bodies of knowledge with Greek practice in the construction industry

    OpenAIRE

    Kiamos, K.

    2006-01-01

    A number of standard project management texts have appeared in recent years in the form of Bodies of Knowledge (BoKs), best practices and ISO standards. The literature on the comparison of the respective texts is, however, scarce and atypical. Moreover, the absence of a formal Body of Knowledge widely used in Greek construction projects, makes the comparison very complex. Project management Bodies of Knowledge are codified single references consisting of "generally recognized management pract...

  17. User-inspired design methodology using Affordance Structure Matrix (ASM) for construction projects

    OpenAIRE

    Maheswari J. Uma; Charlesraj V. Paul C.; Battacharya Soma

    2017-01-01

    Traditionally, design phase of construction projects is often performed with incomplete and inaccurate user preferences. This is due to inefficiencies in the methodologies used for capturing the user requirements that can subsequently lead to inconsistencies and result in non-optimised end-result. Iterations and subsequent reworks due to such design inefficiencies is one of the major reasons for unsuccessful project delivery as they impact project performance measures such as time and cost am...

  18. Prioritization of Effective Risk Factors on Oil Industry Construction Projects (By PMBOK Standard Approach)

    OpenAIRE

    Hossein Baharmand; Mohammad Ali Vahdat Zad; Sayyed Hojjat Hashemi

    2013-01-01

    This study is an applied, analytic-descriptive research in terms of nature. It is thus an analysis in which a sample has been applied for data collection and it is descriptive since its variables are assessed and reported as they are in reality. This study seeks to identify effective risks existing in construction industry specifically in the national macro projects such as oil industry projects through utilizing Project Management Body of Knowledge (PMBOK) model and to estimate the relative ...

  19. Improvements Needed in Managing Scope Changes and Oversight of Construction Projects at Camp Lemonnier, Djibouti

    Science.gov (United States)

    2016-09-30

    Improvements Needed in Managing Scope Changes and Oversight of Construction Projects at Camp Lemonnier, Djibouti S E P T E M B E R 3 0 , 2 0 1 6 Report...Improvements Needed in Managing Scope Changes and Oversight of Construction Projects at Camp Lemonnier, Djibouti Visit us at www.dodig.mil Objective We...Findings (cont’d) ii │ DODIG-2016-141 (Project No. D2014-D000RE-0157.000) Results in Brief Improvements Needed in Managing Scope Changes and Oversight

  20. Robust Optimization for Time-Cost Tradeoff Problem in Construction Projects

    Directory of Open Access Journals (Sweden)

    Ming Li

    2014-01-01

    Full Text Available Construction projects are generally subject to uncertainty, which influences the realization of time-cost tradeoff in project management. This paper addresses a time-cost tradeoff problem under uncertainty, in which activities in projects can be executed in different construction modes corresponding to specified time and cost with interval uncertainty. Based on multiobjective robust optimization method, a robust optimization model for time-cost tradeoff problem is developed. In order to illustrate the robust model, nondominated sorting genetic algorithm-II (NSGA-II is modified to solve the project example. The results show that, by means of adjusting the time and cost robust coefficients, the robust Pareto sets for time-cost tradeoff can be obtained according to different acceptable risk level, from which the decision maker could choose the preferred construction alternative.

  1. Implementation of Six Sigma Method to Maintain The Quality of Construction Projects

    Directory of Open Access Journals (Sweden)

    Yusuf Latief

    2010-10-01

    Full Text Available Six sigma (6-sigma is a method that widely developed in the world, especially in manufacturing industry to decrease failures in achieving good quality in construction projects. The objective of this research is to explore the existing condition of quality management and the aplication of 6-sigma method in maintaining quality of construction projects. Structured interviews to experienced experts and people who were recommended by their companies were conducted. Non-parametric analysis using frequencies distribution procedures were used for analysis. The result shows that existing condition in quality management of construction project in Indonesia have been implemented 6-sigma method approach, that concern with is how to adapt with either from internal or external condition of that project.

  2. Research on Investment Risk Management of Chinese Prefabricated Construction Projects Based on a System Dynamics Model

    Directory of Open Access Journals (Sweden)

    Ming Li

    2017-09-01

    Full Text Available Prefabricated construction, a new direction for the future development of the Chinese construction industry, can maximize the requirements of “green”. As a new form of green building, prefabricated construction is of particular interest. On account of the immature development of the green building market in China, the investment risk for prefabricated construction is higher than for traditional architecture. Hence, it is especially important to improve its investment risk identification and management. This study adopts system dynamics and builds a risk identification feedback chart and risk flow chart, to comprehensively identify investment risks that projects in China may face and to process quantitative estimation of investment risk factors. Key factors influencing project investment risks are found, and corresponding measures are pointedly proposed. This paper may provide guidance and a reference for promoting the sound development of prefabricated construction in China.

  3. The Design, Construction and Test of stray light suppression baffles for the CHAMP satellite

    DEFF Research Database (Denmark)

    Jørgensen, John Leif

    1997-01-01

    The Advanced Stellar Compass, to be delivered from IAU to the CHAMP project, requires some kind of stray-light suppressing shade to be mounted in front of the lens, in order to minimize the thermal impact and to maximize the performance envelope when subjected to non-stellar external light sources...

  4. Using BIM to Improve the Design and Construction of Bridge Projects: A Case Study of a Long-span Steel-box Arch Bridge Project

    OpenAIRE

    Wenping Liu; Hongling Guo; Heng Li; Yan Li

    2014-01-01

    More and more mega-complex bridge projects are being or will be built worldwide. At the same time, the design and construction of such projects involve more and more challenges, e.g., complex structural designs, complicated construction environments, etc. This research study aims to apply BIM (Building Information Modelling) to bridge projects to improve the efficiency and effectiveness of design and construction. Through the analysis of the characteristics of bridge projects and relevant, as...

  5. Magnetic Bearings for Small Satellite CMG's and Other Miniature Spacecraft Mechanisms Project

    Data.gov (United States)

    National Aeronautics and Space Administration — NASA sees an increasing role in the near future for small satellites in the 5-100 kg size range. A potentially disruptive technology, small satellites, which are low...

  6. Guidance, Navigation, and Control System for Maneuverable Pico-Satellites Project

    Data.gov (United States)

    National Aeronautics and Space Administration — A compact, low-power GN&C system is essential to the success of pico-satellite Automated Rendezvous and Docking (AR&D). Austin Satellite Design (ASD)...

  7. Guidance, Navigation, and Control System for Maneuverable Pico-Satellites Project

    Data.gov (United States)

    National Aeronautics and Space Administration — Pico-satellites are an emerging new class of spacecraft. Maneuverable pico-satellites require active guidance, navigation, and control (GN&C) systems to perform...

  8. An Index to Measure Sustainability of a Business Project in the Construction Industry: Lithuanian Case

    Directory of Open Access Journals (Sweden)

    Nomeda Dobrovolskienė

    2015-12-01

    Full Text Available The continuous growth of the world population, resource scarcity and the threat of climate change pose numerous environmental and social problems to the world. Therefore, much hope is put in the concept of sustainability. Companies are increasingly coming under strong global pressure to incorporate sustainability considerations into their project decision-making process. Business projects in the construction industry are among the most important, as this sector is one of the largest sectors and of major importance for the national economy and therefore has a huge impact on the environment and society. Thus, we have to explore ways to integrate sustainability into the management of those projects. This paper presents a composite sustainability index of a project (CSIP which has been created following a review of existing literature and a pilot research study. A pilot research study was conducted in the Lithuanian construction industry between January 2015 and June 2015. Sustainability criteria were chosen and grouped on the basis of the analysis of the literature and different standards relating to sustainability applicable in the construction industry. A survey was used to select and rank the most important sustainability criteria. The index was constructed using multi-criteria decision-making methods. The results of the pilot study revealed that practitioners in the Lithuanian construction sector attach most importance to 15 sustainability criteria. A composite sustainability index of a project combining all these criteria may be useful in assessing the sustainability of a business project and making decisions regarding project portfolio selection and financial resource allocation. When addressing the issue of financial resource allocation in a project portfolio, the decision-maker could take into account not only the project’s return and risk, but also its sustainability. The understanding of this study should enable companies to execute

  9. Sex Difference in Bottlenose Dolphin Sightings during a Long-term Bridge Construction Project

    Directory of Open Access Journals (Sweden)

    Ann Weaver

    2015-02-01

    Full Text Available Almost nothing is known about the effect of long-term bridge construction on free-ranging bottlenose dolphins (Tursiops truncatus. The species’ natural history predicts that there should be sex differences in reaction to construction because bottlenose dolphins show sex differences in most of their behaviors. A 5-year bridge construction project over a narrow but important dolphin corridor at John’s Pass tidal inlet, St. Petersburg FL, brought chronic environmental changes. The purpose of this 8-year study was to determine if bridge construction was associated with changes in dolphin sightings. The sex difference hypothesis was tested with a comparison of sighting probabilities before, during and after bridge construction. Sighting probabilities were generated for 68 adults seen n = 6504 times during N = 951 small-boat surveys of the 6.5-mile estuarine study area, documented with photo identification June 2005-December 2012. The sex difference hypothesis was supported with a significant interaction between construction and gender. Female sightings showed a significant linear decline across construction. Male sightings did not change across construction. The main conclusion is that adult males and females may react differently to habitat changes associated with anthropogenic activities. Sex differences in environmental monitoring and vigilance associated with maternal behavior may have played a role. This is the first report on John’s Pass dolphins that evaluates changes in their behavior during a major construction project across a narrow but important dolphin corridor.

  10. GNSS global real-time augmentation positioning: Real-time precise satellite clock estimation, prototype system construction and performance analysis

    Science.gov (United States)

    Chen, Liang; Zhao, Qile; Hu, Zhigang; Jiang, Xinyuan; Geng, Changjiang; Ge, Maorong; Shi, Chuang

    2018-01-01

    Lots of ambiguities in un-differenced (UD) model lead to lower calculation efficiency, which isn't appropriate for the high-frequency real-time GNSS clock estimation, like 1 Hz. Mixed differenced model fusing UD pseudo-range and epoch-differenced (ED) phase observations has been introduced into real-time clock estimation. In this contribution, we extend the mixed differenced model for realizing multi-GNSS real-time clock high-frequency updating and a rigorous comparison and analysis on same conditions are performed to achieve the best real-time clock estimation performance taking the efficiency, accuracy, consistency and reliability into consideration. Based on the multi-GNSS real-time data streams provided by multi-GNSS Experiment (MGEX) and Wuhan University, GPS + BeiDou + Galileo global real-time augmentation positioning prototype system is designed and constructed, including real-time precise orbit determination, real-time precise clock estimation, real-time Precise Point Positioning (RT-PPP) and real-time Standard Point Positioning (RT-SPP). The statistical analysis of the 6 h-predicted real-time orbits shows that the root mean square (RMS) in radial direction is about 1-5 cm for GPS, Beidou MEO and Galileo satellites and about 10 cm for Beidou GEO and IGSO satellites. Using the mixed differenced estimation model, the prototype system can realize high-efficient real-time satellite absolute clock estimation with no constant clock-bias and can be used for high-frequency augmentation message updating (such as 1 Hz). The real-time augmentation message signal-in-space ranging error (SISRE), a comprehensive accuracy of orbit and clock and effecting the users' actual positioning performance, is introduced to evaluate and analyze the performance of GPS + BeiDou + Galileo global real-time augmentation positioning system. The statistical analysis of real-time augmentation message SISRE is about 4-7 cm for GPS, whlile 10 cm for Beidou IGSO/MEO, Galileo and about 30 cm

  11. Power Grid Construction Project Portfolio Optimization Based on Bi-level programming model

    Science.gov (United States)

    Zhao, Erdong; Li, Shangqi

    2017-08-01

    As the main body of power grid operation, county-level power supply enterprises undertake an important emission to guarantee the security of power grid operation and safeguard social power using order. The optimization of grid construction projects has been a key issue of power supply capacity and service level of grid enterprises. According to the actual situation of power grid construction project optimization of county-level power enterprises, on the basis of qualitative analysis of the projects, this paper builds a Bi-level programming model based on quantitative analysis. The upper layer of the model is the target restriction of the optimal portfolio; the lower layer of the model is enterprises’ financial restrictions on the size of the enterprise project portfolio. Finally, using a real example to illustrate operation proceeding and the optimization result of the model. Through qualitative analysis and quantitative analysis, the bi-level programming model improves the accuracy and normative standardization of power grid enterprises projects.

  12. BASIC ACTUAL AND EFFECTIVENESS OF LEADERSHIP STYLES OF CONSTRUCTION PROJECT MANAGERS IN SURABAYA

    Directory of Open Access Journals (Sweden)

    Andi Andi

    2004-01-01

    Full Text Available Leading is one of the most important facets in managing construction projects, and behaving as an effective leader is a vital project manager’s responsibility to ensure that work efforts of other persons are directed toward the accomplishment of organizational objectives. This paper aims to determine basic and actual leadership styles of construction project managers in Surabaya. The effectiveness of the actual leadership style is also examined. To accomplish the objective, the paper first briefly reviews the ways in which leadership is approached. Data were then collected through an empirical survey to 46 project managers, taking Fiedler and Hersey-Blanchard’s models as the point of departure. The results indicate that the basic leadership of project managers in Surabaya falls slightly on task-oriented behavior. Meanwhile selling is the most common style used as actual leadership in practice. The paper discusses the effectiveness of the styles adopted and situational variables affecting.

  13. A fuzzy pert approach to evaluate plant construction project scheduling risk under uncertain resources capacity

    Directory of Open Access Journals (Sweden)

    Hsian Jong Hsiau

    2009-07-01

    Full Text Available A plant construction project always involves lots of activities. Precise information about the activities duration is unfortunately unavailable due to the uncertain resources capacity. The fuzzy program evaluation and review technique (PERT has been widely applied to solve the fuzzy project scheduling problem. This paper presents an extended fuzzy PERT approach with four major improvement aspects to support the construction project scheduling management: 1 Evaluate operation fuzzy times based on available working volumes, resources quantity and fuzzy capacity of resources, 2 Adopting a maximal alpha_i-level cut method to compare the fuzzy precedent activities times to determine the reasonable earliest starting times of each activity, 3 Using fuzzy algebra method instead of fuzzy subtraction method to compute the fuzzy latest starting times and 4 Developing a project scheduling risk index (PSRI to assist the decision maker to evaluate the project scheduling risk. Simulations experiments are conducted and demonstrated satisfactory results.

  14. Facilitating Client Value Creation in the Conceptual Design Phase of Construction Projects

    DEFF Research Database (Denmark)

    Thyssen, Mikael Hygum; Emmitt, Stephen; Bonke, Sten

    2009-01-01

    If client values are not fully understood in a construction project it is likely to result in either low fulfilment of client expectations or multiple design alterations during the project process which lead to additional costs and frustration among the project participants. However, it is not a ...... that incorporates client values into the conceptual design of construction projects. The workshop model draws on value management and lean thinking as underlying principles in an attempt to address the ambiguous concept of ‘value’.......If client values are not fully understood in a construction project it is likely to result in either low fulfilment of client expectations or multiple design alterations during the project process which lead to additional costs and frustration among the project participants. However...... by the fact that the delivery team, which is responsible for understanding and delivering client value, is made up of even more different parties. The paper reports the initial outcome of a joint research project between academics and practitioners, which aims to develop a practical workshop model...

  15. Assessment of Lean Construction Principles: A Case Study at Semarang Medical Centre Hospital Project

    Directory of Open Access Journals (Sweden)

    Matias Roy Adi Wijaya

    2016-06-01

    Full Text Available The lean construction frameworks have been developed for years to enhance the poor performance of Indonesian project delivery system which influenced by the waste of non-value adding activities. Never the less most of the developments were limited on working process and lack in people empowerment. Toyota Way which integrate working process optimization and people empowerment, was developed as a lean construction frame works. This paper aimed to assess the implementation of Toyota Way principles in project delivery system by observing project’s delivery current state (status quo. The assessment began by conducting a questionnaire survey about Toyota Way implementation which then validated by interview with involved stakeholders and field observation. The assessment showed that project’s stakeholders were still unfamiliar with Toyota Way concept. Although some Toyota Way guidelines have been used in projects completion process such as visual management and training program, it found that those guidelines had not fully implemented. The project delivery system was lack of process focus and concerns more on relationship inter-parties. It also found thatToyota Way implementation will constrained by the difficulties to change the status quo of project delivery. Moreover, it seems that construction projects need practical guidelines to simplify the Toyota Way implementation in project delivery system such as project flow evaluation and system of reflection.

  16. Relational approach in managing construction project safety: a social capital perspective.

    Science.gov (United States)

    Koh, Tas Yong; Rowlinson, Steve

    2012-09-01

    Existing initiatives in the management of construction project safety are largely based on normative compliance and error prevention, a risk management approach. Although advantageous, these approaches are not wholly successful in further lowering accident rates. A major limitation lies with the approaches' lack of emphasis on the social and team processes inherent in construction project settings. We advance the enquiry by invoking the concept of social capital and project organisational processes, and their impacts on project safety performance. Because social capital is a primordial concept and affects project participants' interactions, its impact on project safety performance is hypothesised to be indirect, i.e. the impact of social capital on safety performance is mediated by organisational processes in adaptation and cooperation. A questionnaire survey was conducted within Hong Kong construction industry to test the hypotheses. 376 usable responses were received and used for analyses. The results reveal that, while the structural dimension is not significant, the mediational thesis is generally supported with the cognitive and relational dimensions affecting project participants' adaptation and cooperation, and the latter two processes affect safety performance. However, the cognitive dimension also directly affects safety performance. The implications of these results for project safety management are discussed. Copyright © 2011 Elsevier Ltd. All rights reserved.

  17. Identification of shareholder ethics and responsibilities in online reverse auctions for construction projects.

    Science.gov (United States)

    Hatipkarasulu, Yilmaz; Gill, James H

    2004-04-01

    The increasing number of companies providing internet services and auction tools helped popularize the online reverse auction trend for purchasing commodities and services in the last decade. As a result, a number of owners, both public and private, accepted the online reverse auctions as the bidding technique for their construction projects. Owners, while trying to minimize their costs for construction projects, are also required to address their ethical responsibilities to the shareholders. In the case of online reverse auctions for construction projects, the ethical issues involved in the bidding technique directly reflects on the owner's ethical and social responsibilities to their shareholders. The goal of this paper is to identify the shareholder ethics and responsibilities in online reverse auctions for construction projects by analyzing the ethical issues for the parties involved in the process. The identification of the ethical issues and responsibilities requires clear definition and understanding of professional ethics and the roles of the involved parties. In this paper, first, the concept of professional ethics and social responsibility is described in a general form. To illustrate the ethical issues and responsibilities, a sample case of bidding for a construction project using online reverse auction techniques is presented in which the shareholders were actively involved in questioning the ethical issues. The issues involved in the bidding process and their reflection on the shareholder responsibilities are described and analyzed for each stage of the process. A brief discussion of the overall process is also included to address the general ethical issues involved in online reverse auctions.

  18. Integration and Testing Challenges of Small Satellite Missions: Experiences from the Space Technology 5 Project

    Science.gov (United States)

    Sauerwein, Timothy A.; Gostomski, Tom

    2007-01-01

    The Space Technology 5(ST5) payload was successfully carried into orbit on an OSC Pegasus XL launch vehicle, which was carried aloft and dropped from the OSC Lockheed L-1011 from Vandenberg Air Force Base March 22,2006, at 9:03 am Eastern time, 6:03 am Pacific time. In order to reach the completion of the development and successful launch of ST 5, the systems integration and test(I&T) team determined that a different approach was required to meet the project requirements rather than the standard I&T approach used for single, room-sized satellites. The ST5 payload, part of NASA's New Millennium Program headquartered at JPL, consisted of three micro satellites (approximately 30 kg each) and the Pegasus Support Structure (PSS), the system that connected the spacecrafts to the launch vehicle and deployed the spacecrafts into orbit from the Pegasus XL launch vehicle. ST5 was a technology demonstration payload, intended to test six (6) new technologies for potential use for future space flights along with demonstrating the ability of small satellites to perform quality science. The main technology was a science grade magnetometer designed to take measurements of the earth's magnetic field. The three spacecraft were designed, integrated, and tested at NASA Goddard Space Flight Center with integration and environmental testing occurring in the Bldg. 7-1 0-15-29. The three spacecraft were integrated and tested by the same I&T team. The I&T Manager determined that there was insufficient time in the schedule to perform the three I&T spacecraft activities in series used standard approaches. The solution was for spacecraft #1 to undergo integration and test first, followed by spacecraft #2 and #3 simultaneously. This simultaneous integration was successful for several reasons. Each spacecraft had a Lead Test Conductor who planned and coordinated their spacecraft through its integration and test activities. One team of engineers and technicians executed the integration of all

  19. New satellite project Aerosol-UA: Remote sensing of aerosols in the terrestrial atmosphere

    Science.gov (United States)

    Milinevsky, G.; Yatskiv, Ya.; Degtyaryov, O.; Syniavskyi, I.; Mishchenko, M.; Rosenbush, V.; Ivanov, Yu.; Makarov, A.; Bovchaliuk, A.; Danylevsky, V.; Sosonkin, M.; Moskalov, S.; Bovchaliuk, V.; Lukenyuk, A.; Shymkiv, A.; Udodov, E.

    2016-06-01

    We discuss the development of the Ukrainian space project Aerosol-UA which has the following three main objectives: (1) to monitor the spatial distribution of key characteristics of terrestrial tropospheric and stratospheric aerosols; (2) to provide a comprehensive observational database enabling accurate quantitative estimates of the aerosol contribution to the energy budget of the climate system; and (3) quantify the contribution of anthropogenic aerosols to climate and ecological processes. The remote sensing concept of the project is based on precise orbital measurements of the intensity and polarization of sunlight scattered by the atmosphere and the surface with a scanning polarimeter accompanied by a wide-angle multispectral imager-polarimeter. Preparations have already been made for the development of the instrument suite for the Aerosol-UA project, in particular, of the multi-channel scanning polarimeter (ScanPol) designed for remote sensing studies of the global distribution of aerosol and cloud properties (such as particle size, morphology, and composition) in the terrestrial atmosphere by polarimetric and spectrophotometric measurements of the scattered sunlight in a wide range of wavelengths and viewing directions from which a scene location is observed. ScanPol is accompanied by multispectral wide-angle imager-polarimeter (MSIP) that serves to collect information on cloud conditions and Earth's surface image. Various components of the polarimeter ScanPol have been prototyped, including the opto-mechanical and electronic assemblies and the scanning mirror controller. Preliminary synthetic data simulations for the retrieval of aerosol parameters over land surfaces have been performed using the Generalized Retrieval of Aerosol and Surface Properties (GRASP) algorithm. Methods for the validation of satellite data using ground-based observations of aerosol properties are also discussed. We assume that designing, building, and launching into orbit a multi

  20. How Do Contractors Select Suppliers for Greener Construction Projects? The Case of Three Swedish Companies

    Directory of Open Access Journals (Sweden)

    Shahin Mokhlesian

    2014-06-01

    Full Text Available There are many studies of contractor selection based on clients and the selection of suppliers by contractors. However, supplier selection specifically related to green construction projects has been much less studied. Green construction differs from conventional construction because of differences in its underlying principles and use of environmentally-friendly materials and technologies. This paper studies how procurers in contractor companies in Sweden adopt green projects and how contractor perception of supplier mastery of green knowledge affects supplier selection. The investigation is based on a set of semi-structured interviews conducted among three large contractors in Sweden. A main finding is that the perceived differences between green and conventional projects do not change supplier selection dramatically. An implication is that “greener projects” is a more appropriate denotation than “green project”. Evidence shows that suppliers’ green knowledge is an important factor in supplier selection, as respondents rated suppliers’ knowledge of green projects as very important, and to fix his, there was a consensus among respondents about the need for close collaboration between contractors and suppliers. To ensure knowledge acquisition from suppliers and to increase their competitive advantage over rivals, contractors collaborate with their suppliers in a partnering setting. It is anticipated that the results of this study will be used to fill the gap in the literature on supplier selection in green projects and can also be used for construction firms contemplating getting involved in green projects.

  1. Management of investment-construction projects basing on the matrix of key events

    Directory of Open Access Journals (Sweden)

    Morozenko Andrey Aleksandrovich

    2016-11-01

    Full Text Available The article considers the current problematic issues in the management of investment-construction projects, examines the questions of efficiency increase of construction operations on the basis of the formation of a reflex-adaptive organizational structure. The authors analyzed the necessity of forming a matrix of key events in the investment-construction project (ICP, which will create the optimal structure of the project, basing on the work program for its implementation. For convenience of representing programs of the project implementation in time the authors make recommendations to consolidate the works into separate, economically independent functional blocks. It is proposed to use an algorithm of forming the matrix of an investment-construction project, considering the economic independence of the functional blocks and stages of the ICP implementation. The use of extended network model is justified, which is supplemented by organizational and structural constraints at different stages of the project, highlighting key events fundamentally influencing the further course of the ICP implementation.

  2. Construction of lake bathymetry from MODIS satellite data and GIS from 2003 to 2011

    Science.gov (United States)

    Yan, Yi; Xiao, Fei; Du, Yun

    2014-05-01

    In recent years, sedimentation conditions in Dongting Lake have varied greatly because of signifi cant changes in runoff and sediment load in the Changjiang (Yangtze) River following the construction of Three Gorges Dam. The topography of the lake bottom has changed rapidly because of the intense exchange of water and sediment between the lake and the Changjiang River. However, time series information on lake-bottom topographic change is lacking. In this study, we introduced a method that combines remote sensing data and in situ water level data to extract a record of Dongting Lake bottom topography from 2003 to 2011. Multi-temporal lake land/water boundaries were extracted from MODIS images using the linear spectral mixture model method. The elevation of water/land boundary points were calculated using water level data and spatial interpolation techniques. Digital elevation models of Dongting Lake bottom topography in different periods were then constructed with the multiple heighted waterlines. The mean root-mean-square error of the linear spectral mixture model was 0.036, and the mean predicted error for elevation interpolation was -0.19 m. Compared with fi eld measurement data and sediment load data, the method has proven to be most applicable. The results show that the topography of the bottom of Dongting Lake has exhibited uneven erosion and deposition in terms of time and space over the last nine years. Moreover, lake-bottom topography has undergone a slight erosion trend within this period, with 58.2% and 41.8% of the lake-bottom area being eroded and deposited, respectively.

  3. Exploring Interface Problems in Taiwan’s Construction Projects Using Structural Equation Modeling

    Directory of Open Access Journals (Sweden)

    Chien-Liang Lin

    2017-05-01

    Full Text Available Construction projects are complex systems that inherently contain complex interface problems. This study explored the root causes of interface problems in construction projects using structural equation modeling. This technique is a systematic approach that combines factor analysis and path analysis to investigate the causal relationships among multidimensional factors. The literature on construction interface problems was reviewed, and a questionnaire survey was conducted in Taiwan to identify 27 initial factors that cause interface problems in three dimensions: owner, design, and construction. Then, a series of structural equation models (SEMs was developed to further explore the root causes of the interface problems and their causal relationships. This study has three main findings: (1 poor design causes interface problems; (2 ineffective communication and coordination among the owner, design, and construction dimensions are the main factors that cause construction interface problems; and (3 a lack of communication and coordination has a greater influence on the construction dimension than on the owner and design dimensions. The above findings can be used as important references and sustainable management strategies for academia and decision-makers in the construction industry.

  4. REVIEW OF INTERNATIONAL PROJECTS IN А FIELD OF HUMAN MICROBIAL ECOLOGY AND CONSTRUCTION OF PROBIOTICS

    Directory of Open Access Journals (Sweden)

    S. A. Starovoitova

    2013-06-01

    Full Text Available Modern huge and world-wide known projects concerning studying of human microbial ecology and construction of probiotics, particularly: Society for Microbial Ecology and Disease, Probiotics & Health Targeted Initiative of International Science and Technology Center (TI PROBIO ISTC, Human Microbiome Project of National Institutes of Health, MetaHIT Project (Metagenomics of the Human Intestinal Tract of European Commission, Human Metabolome Project of Canadian University of Alberta and some more else were characterized in the article. Brief historical information and reference to official sites of every discussed project were given. Main goals and tasks of every project were described. Short characteristic of discussed projects and also modern accessible results of researches were given. Importance of every examined project for widening scientific knowledge in the field of human microbial ecology and also for improvement and/or for construction of modern effective probiotics on basis of human normal intestinal microflora were paid attention. Close interaction of scientific data received by realization of every discussed project was shown.

  5. CRITICAL SUCCESS FACTORS THAT INFLUENCING SAFETY PROGRAM PERFORMANCE IN MALAYSIAN CONSTRUCTION PROJECTS: CASE STUDIES

    OpenAIRE

    ABDELNASER OMRAN; ABDELWAHAB OMRAN; ABDUL HAMID PAKIR KADIR

    2010-01-01

    The construction industry is characterized as one with a poor safety culture globally. To achieve better site safety performance, emphasis has been placed on implementing effective safety programs. The main aim of this paper is to identify the Critical Success Factors that influencing safety program performance in Malaysian construction projects. In order to accomplish the aim of this study, the following objective was taken into consideration which is to study the factors contributing to the...

  6. Attribute Hierarchy of Conflicts in Construction Projects: A Case Study of Sindh

    Directory of Open Access Journals (Sweden)

    Shabbir Hussain Khahro

    2015-10-01

    Full Text Available Conflicts seem to arise throughout the life cycle of the construction project and in result, these may lead to several other issues such as project cost overrun, time overrun, productivity loss, loss of profit and above all damage of business relationships in general and specifically in construction industry. Hence, this paper focuses on various direct and indirect causes leading to conflicts in construction industry of Sindh, Pakistan. Detailed literature review and interviews have been carried out to identify several direct and indirect causes of conflicts and finally, a set of questionnaire has been designed and distributed to get expert opinion on the significance of these causes in this sector. The data has been analyzed by RIW (Relative Importance Weight method. The outcome of this study shows that payment delay is the major direct cause of conflicts in the construction projects followed by contractual claims, public interruption, poor communication and site conditions. Thus, it is suggested that proper attention should be given to the above mentioned concerns so as to have a uniform flow of construction project life cycle without any interruption.

  7. NEW INSTRUMENTS FOR MANAGEMENT OF CONSTRUCTION PROGRAMS AND PROJECTS IN THE NEW ECONOMY STRUCTURE

    Directory of Open Access Journals (Sweden)

    Silka Dmitriy Nikolaevich

    2017-11-01

    Full Text Available Subject: the new economy structure is directly related to the active application of digital technologies. Economic processes are more formalized and for making administrative decisions it becomes possible to operate in a greater degree with precise criteria and information than probabilistic assumptions. As a subject of research, new tools for managing construction programs and projects are presented. Research objectives: the purpose of the study is to formulate general principles and directions for the digitization of economic relations in investment and construction activities to ensure the effectiveness of implementation of new generation projects. Materials and methods: to achieve the goal, the article shows the composition of state programs and projects in the construction sector and the system problems of their implementation. Organizational methods of increasing their effectiveness are considered. Results: the most promising areas of implementation of new management tools for investment and construction programs and projects are identified. Conclusions: the article shows the current dynamics of changes in technical and socio-economic systems at the level of construction sector. It is pointed out that the tasks of socio-economic nature require the development of unique approaches since the peculiarities of Russian legislation, of the prevailing norms and rules of economic activity prevent the direct replication of successful foreign experience.

  8. Management of Human Resources and Quality in Materials Supply Process in Construction Projects

    Directory of Open Access Journals (Sweden)

    Valentina Žileska – Pančovska

    2016-08-01

    Full Text Available Construction projects participants were surveyed to assess how coordination and communication among stakeholders and quality control in building materials supply process were managed, as well as to evaluate their satisfaction with the structures quality. It was found that the participants’ role and working experience had a statistically significant interaction effect on satisfaction with the structures quality, but their effect on perceived coordination and communication among stakeholders and materials’ quality control wasn’t statistically significant. The results were discussed in light of their importance for effective construction project management from the aspect of human resources, building materials quality and satisfaction with the quality of structures.

  9. A review of risk management process in construction projects of developing countries

    Science.gov (United States)

    Bahamid, R. A.; Doh, S. I.

    2017-11-01

    In the construction industry, risk management concept is a less popular technique. There are three main stages in the systematic approach to risk management in construction industry. These stages include: a) risk response; b) risk analysis and evaluation; and c) risk identification. The high risk related to construction business affects each of its participants; while operational analysis and management of construction related risks remain an enormous task to practitioners of the industry. This paper tends towards reviewing the existing literature on construction project risk managements in developing countries specifically on risk management process. The literature lacks ample risk management process approach capable of capturing risk impact on diverse project objectives. This literature review aims at discovering the frequently used techniques in risk identification and analysis. It also attempts to identify response to clarifying the different classifications of risk sources in the existing literature of developing countries, and to identify the future research directions on project risks in the area of construction in developing countries.

  10. Communication, coordination and cooperation in construction projects: business environment and human behaviours

    Science.gov (United States)

    Salah Alaloul, Wesam; Shahir Liew, Mohd; Zawawi, Noor Amila Wan

    2017-12-01

    The accomplishment of construction projects is extremely dependent on the integration of several stakeholders; therefore none of them has the control or the ability to accomplish the project alone. Each of them may influence and be influenced by the project management approach. There is no comprehensive theoretical platform for defining Communication, Coordination and Cooperation (3Cs) in the management of construction project. This paper deliberates the function of the 3Cs different theoretical perceptions. Through an analysis of selected articles from reputable academic journals in construction management, the business environment and human behaviour were identified as two main parts. A little has been done so far about the 3Cs, and how they are correlated with construction projects performance. Therefore, the objective of this paper is to explain the definitions and the association between the 3Cs. There is a significant link between communication and coordination. Coordination alternatively, is trust-based a logic of mutual and exchange. Consequently, cooperation is much more sophisticated, which needing more time and attempts.

  11. Patch-based image segmentation of satellite imagery using minimum spanning tree construction

    Energy Technology Data Exchange (ETDEWEB)

    Skurikhin, Alexei N [Los Alamos National Laboratory

    2010-01-01

    We present a method for hierarchical image segmentation and feature extraction. This method builds upon the combination of the detection of image spectral discontinuities using Canny edge detection and the image Laplacian, followed by the construction of a hierarchy of segmented images of successively reduced levels of details. These images are represented as sets of polygonized pixel patches (polygons) attributed with spectral and structural characteristics. This hierarchy forms the basis for object-oriented image analysis. To build fine level-of-detail representation of the original image, seed partitions (polygons) are built upon a triangular mesh composed of irregular sized triangles, whose spatial arrangement is adapted to the image content. This is achieved by building the triangular mesh on the top of the detected spectral discontinuities that form a network of constraints for the Delaunay triangulation. A polygonized image is represented as a spatial network in the form of a graph with vertices which correspond to the polygonal partitions and graph edges reflecting pairwise partitions relations. Image graph partitioning is based on the iterative graph oontraction using Boruvka's Minimum Spanning Tree algorithm. An important characteristic of the approach is that the agglomeration of partitions is constrained by the detected spectral discontinuities; thus the shapes of agglomerated partitions are more likely to correspond to the outlines of real-world objects.

  12. The joint project to construct high-intensity proton accelerators (J- PARC)

    CERN Document Server

    Nagae, T

    2003-01-01

    From Japanese fiscal year JFY01, which started on April 1, 2001, a new accelerator project to provide high-intensity proton beams proceeded into its construction phase. This project, which is now called the J-PARC (Japan Proton Accelerator Research Complex) project, is conducted under a cooperation of two institutions, KEK and JAERI. We set a goal to achieve 1 MW proton beams at GeV and 0.75 MW beams at 50 GeV. The project will be completed within six years, with the anticipated first beams in the spring of 2007. In this report, I describe the whole project, scientific goals of the project and strangeness nuclear physics programs in details. (8 refs).

  13. THE PERFORMANCE OF THE PROJECT COALITION IN THE UK CONSTRUCTION INDUSTRY A CONCEPTUAL OPTIMISATION MODEL

    OpenAIRE

    David G. Proverbs; Patricia Cooper; Robby Soetanto

    2000-01-01

    The UK construction industry has long been criticised for engendering adversarial relationships among project participants. The nature of interrelationships ultimately determines overall project performance%2C in terms of finished product%2C and levels of performance and satisfaction for the participants. To investigate these interrelationships%2C the performance and satisfaction of each individual participant must be considered. Better understanding of the interrelationships should help redu...

  14. Executive summaries of reports leading to the construction of the Baca Geothermal Demonstration Project

    Energy Technology Data Exchange (ETDEWEB)

    Sherwood, P.B.; Newman, K.L.; Westermeier, J.F.; Giroux, H.D.; Lowe, G.D.; Nienberg, M.W.

    1980-05-01

    Executive summaries have been written for 61 reports and compilations of data which, in part, have led to the construction of the Baca 50 MW Geothermal Demonstration Project (GDP). The reports and data include environmental research, reservoir and feasibility studies, the project proposal to DOE and the Final Environmental Impact Statement. These executive summaries are intended to give the reader a general overview of each report prior to requesting the report from the GDP Data Manager.

  15. Executive summaries of reports leading to the construction of the Baca Geothermal Demonstration Project

    Energy Technology Data Exchange (ETDEWEB)

    Sherwood, P.B.; Newman, K.L.; Westermeier, J.F.; Giroux, H.D.; Lowe, G.D.; Nienberg, M.W.

    1980-05-01

    Executive summaries have been written for 61 reports and compilations of data which in part, have led to the construction of the Baca 50 MW Geothermal Demonstration Project (GDP). The reports and data include environmental research, reservoir and feasibility studies, the project proposal to DOE and the Final Environmental Impact Statement. These executive summaries are intended to give the reader a general overview of each report prior to requesting the report from the GDP Data Manager.

  16. An Exploitation of Satellite-based Observation for Health Information: The UFOS Project

    Energy Technology Data Exchange (ETDEWEB)

    Mangin, A.; Morel, M.; Fanton d' Andon, O

    2000-07-01

    Short, medium and long-term trends of UV intensity levels are of crucial importance for either assessing effective biological impacts on human population, or implementing adequate preventive behaviours. Better information on a large spatial scale and increased public awareness of the short-term variations in UV values will help to support health agencies' goals of educating the public on UV risks. The Ultraviolet Forecast Operational Service Project (UFAS), financed in part by the European Commission/DG Information Society (TEN-TELECOM programme), aims to exploit satellite-based observations and to supply a set of UV products directly useful to health care. The short-term objective is to demonstrate the technical and economical feasibility and benefits that could be brought by such a system. UFOS is carried out by ACRI, with the support of an Advisory Group chaired by WHO and involving representation from the sectors of Health (WHO, INTERSUN collaborating centres, ZAMBON), Environment (WMO, IASB), and Telecommunications (EURECOM, IMET). (author)

  17. Optimal Scheduling of Railway Track Possessions in Large-Scale Projects with Multiple Construction Works

    DEFF Research Database (Denmark)

    Li, Rui; Roberti, Roberto

    2017-01-01

    This paper addresses the railway track possession scheduling problem (RTPSP), where a large-scale railway infrastructure project consisting of multiple construction works is to be planned. The RTPSP is to determine when to perform the construction works and in which track possessions while.......37% of the optimal one for six different blocking proposals and two alternative construction providers, so it can be used as an effective support tool in the primary planning stage to suggest preferable track possessions within the existing railway services. (C) 2017 American Society of Civil Engineers....

  18. The application of a pilot pull planning system to construction projects

    OpenAIRE

    Johansen, Eric

    2002-01-01

    A new planning system was introduced as a pilot within a large UK construction company. The system, which attempts to address some of the problems of construction “front end” planning, is investigated relative to Lean Construction and specifically the Last Planner system. The purpose is to see if it can be used as the basis for applying a lean planning model which the company intends to introduce and test through a research project. The existing system is seen to have strengths in terms of go...

  19. Influence in-sourcing and outsourcing of consultants on construction project performance in Nigeria

    Directory of Open Access Journals (Sweden)

    Godwin Iroroakpo Idoro

    2011-12-01

    Full Text Available Research studies have discovered that outsourcing has several benefits and the practice is fast replacing in-sourcing especially with regard to construction consultants. In the attempt to examine the benefits of the two approaches on project outcome, this study investigates the influence of the use of in-sourced and outsourced consultants on project performance in Nigeria. The objectives are to determine the use of in-sourcing and outsourcing for selected consultants, compare the use of the two approaches in project delivery and their influence on project performance and compare the performance of projects in which in-sourced and outsourced selected consultants were engaged. To achieve these objectives, a questionnaire design approach was adopted. A field survey involving a sample of 164 projects were selected by stratified random sampling. Data were collected using structured questionnaires and analysed using percentage, mean, Spearman and t-tests. The results of the study reveal that clients engage both in-sourced and outsourced consultants in project development and that the practice has significant influence on project performance. It also discovered that the use of the two approaches has differing benefits on project delivery time and cost. The study concludes that in-sourcing and outsourcing are common practices in project development and that clients are facing a challenge in deciding which approach to adopt. The study also discovers that both approaches has benefits associated with project outcome and suggests that clients should consider these benefits in deciding in-sourced and outsourced consultants.

  20. Guidelines of Using Project Management Tools and Techniques to Mitigate Factors Causing Delays in Public Construction Projects in Kingdom of Saudi Arabia

    OpenAIRE

    Nasser Obaid Alotaibi; Monty Sutrisna; Heap-Yih Chong

    2016-01-01

    Delays can be considered a common problem within public and private construction projects around the world but the problem is endemic in Kingdom of Saudi Arabia (KSA) where massive public funds are lost every year as a result. Delays may have significant negative impact not only to the KSA public construction projects but also on its economic and social status. Although several studies have examined the factors influencing delays in public construction projects in KSA, little attention has be...

  1. A Principal Component Analysis of Project Management Construction Industry Competencies for the Ghanaian

    Directory of Open Access Journals (Sweden)

    Rockson Dobgegah

    2011-03-01

    Full Text Available The study adopts a data reduction technique to examine the presence of any complex structure among a set of project management competency variables. A structured survey questionnaire was administered to 100 project managers to elicit relevant data, and this achieved a relatively high response rate of 54%. After satisfying all the necessary tests of reliability of the survey instrument, sample size adequacy and population matrix, the data was subjected to principal component analysis, resulting in the identification of six new thematic project management competency areas ; and were explained in terms of human resource management and project control; construction innovation and communication; project financial resources management; project risk and quality management; business ethics and; physical resources and procurement management. These knowledge areas now form the basis for lateral project management training requirements in the context of the Ghanaian construction industry. Key contribution of the paper is manifested in the use of the principal component analysis, which has rigorously provided understanding into the complex structure and the relationship between the various knowledge areas. The originality and value of the paper is embedded in the use of contextual-task conceptual knowledge to expound the six uncorrelated empirical utility of the project management competencies.

  2. TECHNICAL AND ECONOMIC SUBSTANTIATION OF PROJECTS OF THE AFFORDABLE HOUSING CONSTRUCTION

    Directory of Open Access Journals (Sweden)

    KRAVCHUNOVSKA T. S.

    2015-12-01

    Full Text Available Summary. Problem statement. The development of inhabitant locality of Ukraine is characterized by significant differences in levels of socio and economic development. An excessive concentration of population and industry in large cities, inefficient, slow development of most medium and small cities, towns and villages, considerable territorial disproportions of economic development of the country, considerable shortcomings in the territorial organization of society are observed. At the same time the tendency of the total area of increasing of inhabitant locality. The lands are used inefficiently. Among the most common problems of inhabitant locality is the housing problem. When making a decision on the design of affordable housing construction is one of the most important stages in the development of the technique and economic substantiation of the project is determination of the advisability and effectiveness of construction. The substantiation of advisability and effectiveness of affordable housing based on the definition of technical and economic indicators of projects, one of the most important among them is the cost, in its calculation is necessary to take into account the influence of organizational and technological factors, reflecting the features of construction in condition of compacted construction. Purpose. Development of methodical recommendations on substantiation of cost construction of affordable housing in the conditions of compacted construction. Conclusion. To provide a processing and the analysis of data is necessary development of the applied software on the basis of the developed block scheme of justification of cost construction of affordable housing.

  3. Construction safety monitoring based on the project's characteristic with fuzzy logic approach

    Science.gov (United States)

    Winanda, Lila Ayu Ratna; Adi, Trijoko Wahyu; Anwar, Nadjadji; Wahyuni, Febriana Santi

    2017-11-01

    Construction workers accident is the highest number compared with other industries and falls are the main cause of fatal and serious injuries in high rise projects. Generally, construction workers accidents are caused by unsafe act and unsafe condition that can occur separately or together, thus a safety monitoring system based on influencing factors is needed to achieve zero accident in construction industry. The dynamic characteristic in construction causes high mobility for workers while doing the task, so it requires a continuously monitoring system to detect unsafe condition and to protect workers from potential hazards. In accordance with the unique nature of project, fuzzy logic approach is one of the appropriate methods for workers safety monitoring on site. In this study, the focus of discussion is based on the characteristic of construction projects in analyzing "potential hazard" and the "protection planning" to be used in accident prevention. The data have been collected from literature review, expert opinion and institution of safety and health. This data used to determine hazard identification. Then, an application model is created using Delphi programming. The process in fuzzy is divided into fuzzification, inference and defuzzification, according to the data collection. Then, the input and final output data are given back to the expert for assessment as a validation of application model. The result of the study showed that the potential hazard of construction workers accident could be analysed based on characteristic of project and protection system on site and fuzzy logic approach can be used for construction workers accident analysis. Based on case study and the feedback assessment from expert, it showed that the application model can be used as one of the safety monitoring tools.

  4. Miniaurizable, High Performance, Fiber-Optic Gyroscopes for Small Satellites Project

    Data.gov (United States)

    National Aeronautics and Space Administration — Small satellites require much lighter weight, smaller, and long life Attitude control components that can withstand stressing launch conditions and space vibration...

  5. Data Filtering and Assimilation of Satellite Derived Aerosol Optical Depth Project

    Data.gov (United States)

    National Aeronautics and Space Administration — Satellite observations of the Earth often contain excessive noise and extensive data voids. Aerosol measurements, for instance, are obscured and contaminated by...

  6. Development of the “quality-efficiency” model of construction investment projects for road construction on the basis of sustainable growth

    Science.gov (United States)

    Uvarova, Svetlana; Belyaeva, Svetlana; Myshovskaya, Lyudmila

    2017-10-01

    The urgency of the problem to improve the quality of the road construction is due to the need to stimulate demand for toll travel, increase efficiency of construction and investment projects and reduce the cost of resources as well as negative impact on the environment. The authors state levels and criteria of quality for the construction products on the basis of the semantic analysis, that allowed to structure the quality elements of the road construction object. Taking into account justified quality parameters, standard technical basis for building sector is systemized and directions for its optimization are suggested. There is developed a model to estimate the efficiency level of construction and investment projects in terms of quality which is carried out through the construction projects of toll roads.

  7. ARM Radiosondes for National Polar-Orbiting Operational Environmental Satellite System Preparatory Project Validation Field Campaign Report

    Energy Technology Data Exchange (ETDEWEB)

    Borg, Lori [Univ. of Wisconsin, Madison, WI (United States); Tobin, David [Univ. of Wisconsin, Madison, WI (United States); Reale, Anthony [National Oceanic and Atmospheric Administration (NOAA), Washington, DC (United States); Knuteson, Robert [Univ. of Wisconsin, Madison, WI (United States); Feltz, Michelle [Univ. of Wisconsin, Madison, WI (United States); Liu, Mark [National Oceanic and Atmospheric Administration (NOAA), Washington, DC (United States); Holdridge, Donna J [Argonne National Lab. (ANL), Argonne, IL (United States); Mather, James [Pacific Northwest National Lab. (PNNL), Richland, WA (United States)

    2017-06-01

    This IOP has been a coordinated effort involving the U.S. Department of Energy (DOE) Atmospheric Radiation (ARM) Climate Research Facility, the University of Wisconsin (UW)-Madison, and the JPSS project to validate SNPP NOAA Unique Combined Atmospheric Processing System (NUCAPS) temperature and moisture sounding products from the Cross-track Infrared Sounder (CrIS) and the Advanced Technology Microwave Sounder (ATMS). In this arrangement, funding for radiosondes was provided by the JPSS project to ARM. These radiosondes were launched coincident with the SNPP satellite overpasses (OP) at four of the ARM field sites beginning in July 2012 and running through September 2017. Combined with other ARM data, an assessment of the radiosonde data quality was performed and post-processing corrections applied producing an ARM site Best Estimate (BE) product. The SNPP targeted radiosondes were integrated into the NOAA Products Validation System (NPROVS+) system, which collocated the radiosondes with satellite products (NOAA, National Aeronautics and Space Administration [NASA], European Organisation for the Exploitation of Meteorological Satellites [EUMETSAT], Geostationary Operational Environmental Satellite [GOES], Constellation Observing System for Meteorology, Ionosphere, and Climate [COSMIC]) and Numerical Weather Prediction (NWP forecasts for use in product assessment and algorithm development. This work was a fundamental, integral, and cost-effective part of the SNPP validation effort and provided critical accuracy assessments of the SNPP temperature and water vapor soundings.

  8. Mechanisms of Region Construction: the Case of International Projects in the Baltic Sea Region

    Directory of Open Access Journals (Sweden)

    Sologub Anastasiya Petrovna

    2015-12-01

    Full Text Available The article analyzes the processes of regional construction and their specific features in the Baltic Sea region. The article provides insights into main approaches to defining the notion of the Baltic Sea Region, its geography, rationales and preconditions of the Baltic Sea Region construction. The author makes conclusion that currently the construction process is being continued, and it involves a wide range of actors: NGOs, local and regional authorities, scientific organizations, higher education institutions, business structures, international organizations. All these actors use different tools and act in different spheres. Although there is no clear answer to the question “Who and how constructs the Baltic Sea Region?”, it is concluded that the cooperation played a significant role in this process, for example, by determining the geography of the region and creating communication networks. Projects, in turn, become a widespread form of cooperation which are used by large Baltic interregional organizations, such as the Northern Dimension, Interregional programmes, the Council of the Baltic Sea States. International project activity of the described above actors, being the point of pooled resources application and also narratives on the regional issues, became one of the mechanisms of the region construction. The article proves that a wide variety of projects in various fields with the participation of different actors creates a picture of the Baltic Sea region building some of its features and providing common identity and responsibility ideas.

  9. Application of Boosting Regression Trees to Preliminary Cost Estimation in Building Construction Projects.

    Science.gov (United States)

    Shin, Yoonseok

    2015-01-01

    Among the recent data mining techniques available, the boosting approach has attracted a great deal of attention because of its effective learning algorithm and strong boundaries in terms of its generalization performance. However, the boosting approach has yet to be used in regression problems within the construction domain, including cost estimations, but has been actively utilized in other domains. Therefore, a boosting regression tree (BRT) is applied to cost estimations at the early stage of a construction project to examine the applicability of the boosting approach to a regression problem within the construction domain. To evaluate the performance of the BRT model, its performance was compared with that of a neural network (NN) model, which has been proven to have a high performance in cost estimation domains. The BRT model has shown results similar to those of NN model using 234 actual cost datasets of a building construction project. In addition, the BRT model can provide additional information such as the importance plot and structure model, which can support estimators in comprehending the decision making process. Consequently, the boosting approach has potential applicability in preliminary cost estimations in a building construction project.

  10. Towards Integrated Team Practice: A Case of Malaysian Industrialised Building System (IBS Construction Projects

    Directory of Open Access Journals (Sweden)

    Mohd Nawi Mohd Nasrun

    2014-01-01

    Full Text Available Problems associated with fragmentation in the traditional construction process, such as isolation of professionals, lack of co-ordination between design and construction, and the sequential manner of its processes, has impacted on construction performance leading to a lack of integration, wastage, low productivity and efficiency. Integrated team practice is perceived as paramount. Unfortunately, there has a limitation of study focus on the dimension of fully integrated team especially for Malaysian Industrialised Building System (IBS projects. Accordingly, this research paper explores and identifies the dimension of fully integrated team from the traditional approach and conduct a validation process for implementing it in Malaysian IBS projects. The research presented uses interviews case study to obtain qualitative data. It was found that the dimension of fully integrated team from the traditional construction process could apply to the Malaysian IBS projects. Suggestions on how an integrated team practice in IBS design and construction process in order to minimise the fragmentation gaps will be concluded.

  11. Application of Boosting Regression Trees to Preliminary Cost Estimation in Building Construction Projects

    Directory of Open Access Journals (Sweden)

    Yoonseok Shin

    2015-01-01

    Full Text Available Among the recent data mining techniques available, the boosting approach has attracted a great deal of attention because of its effective learning algorithm and strong boundaries in terms of its generalization performance. However, the boosting approach has yet to be used in regression problems within the construction domain, including cost estimations, but has been actively utilized in other domains. Therefore, a boosting regression tree (BRT is applied to cost estimations at the early stage of a construction project to examine the applicability of the boosting approach to a regression problem within the construction domain. To evaluate the performance of the BRT model, its performance was compared with that of a neural network (NN model, which has been proven to have a high performance in cost estimation domains. The BRT model has shown results similar to those of NN model using 234 actual cost datasets of a building construction project. In addition, the BRT model can provide additional information such as the importance plot and structure model, which can support estimators in comprehending the decision making process. Consequently, the boosting approach has potential applicability in preliminary cost estimations in a building construction project.

  12. THE INTEGRATION OF LEAN CONSTRUCTION WITH PROJECT MANAGEMENT - A SYSTEMATIC REVIEW OF LITERATURE

    Directory of Open Access Journals (Sweden)

    Lucas Machado

    2017-06-01

    Full Text Available The principles of Lean philosophy are well applied to various production environments and have become a widespread reality among organizations, as well as in literature. However, the integration of these concepts to the Project Management remains poorly addressed and can provide great benefits to companies. Recently, the construction sector companies have integrated the principles of Lean Construction for Project Management, representing a new and robust approach in troubleshooting existing in the construction industry. In this context, the objective of this research was to verify the integration of the Lean Construction methodology with the traditional project management, as well as the expected objectives and the results achieved through this integration. For this purpose, a systematic review of the literature was proposed in order to verify the studies that have addressed the theme in the last ten years. After the review, a strong trend was identified in the integration of Lean Construction with agile methodologies such as Last Planner and critical path method, as well as the verification of the potential of the integration of the two methodologies, due to the positive results indicated by the analysis of the selected articles that pointed considerable improvements in quality, schedule and cost management.

  13. A bayesian belief networks approach to risk control in construction projects

    NARCIS (Netherlands)

    Chivatá Cárdenas, Ibsen; Al-Jibouri, Saad H.S.; Halman, Johannes I.M.; Telichenko, V.; Volkov, A.; Bilchuk, I.

    2012-01-01

    Although risk control is a key step in risk management of construction projects, very often risk measures used are based merely on personal experience and engineering judgement rather than analysis of comprehensive information relating to a specific risk. This paper deals with an approach to provide

  14. A Comparative Analysis of Key Construction Projects of Higher Education in China, Korea and Japan

    Science.gov (United States)

    Jiang, Erlin

    2008-01-01

    In the era of globalization, China, Korea and Japan have put forward favorable policies to develop higher education. The essay is aimed to make a comparison of their various policies. The conclusion is that, when facing similar forces and problems against the background of globalization, the guidelines and goals of the key construction projects in…

  15. The use of interorganisational ICT in construction projects: a critical perspective

    NARCIS (Netherlands)

    Adriaanse, Adriaan Maria; Voordijk, Johannes T.; Dewulf, Geert P.M.R.

    2010-01-01

    Purpose: The objective of this paper is to demonstrate how a critical perspective (i.e. critical social theory) can be applied to provide understanding and insights into mechanisms as to why interorganisational information communication technologies (ICT) in construction projects is not used in the

  16. Impact of government and corporate strategy on the performance of technology projects in road construction

    NARCIS (Netherlands)

    Caerteling, Jasper; Halman, Johannes I.M.; Song, Michael; Song, Michael; Doree, Andries G.

    2009-01-01

    In this study, we focus on road construction and analyze technology development projects. Based on the business strategy literature and literature on technology policy, we test the relative importance of a firm's strategies and government as a buyer and champion. Our empirical findings stress the

  17. Planning linear construction projects: automated method for the generation of earthwork activities

    NARCIS (Netherlands)

    Askew, W.H.; Al-Jibouri, Saad H.S.; Mawdesley, M.J.; Patterson, D.E.

    2002-01-01

    Earthworks planning for road construction projects is a complex operation and the planning rules used are usually intuitive and not well defined. An approach to automate the earthworks planning process is described and the basic techniques that are used are outlined. A computer-based system has been

  18. 38 CFR 17.255 - Applications for grants for programs which include construction projects.

    Science.gov (United States)

    2010-07-01

    ... 38 Pensions, Bonuses, and Veterans' Relief 1 2010-07-01 2010-07-01 false Applications for grants... Veterans' Relief DEPARTMENT OF VETERANS AFFAIRS MEDICAL Grants for Exchange of Information § 17.255 Applications for grants for programs which include construction projects. In addition to the documents and...

  19. Final audit report of remedial action construction at the UMTRA project site Rifle, Colorado. Rev. 1

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1997-01-01

    This final audit report summarizes the assessments performed by the U.S. Department of Energy (DOE) Environmental Restoration Division (ERD) and its Technical Assistance Contractor (TAC) of remedial action compliance with approved plans, specifications, standards, and 40 CFR Part 192 at the Rifle, Colorado, Uranium Mill Tailings Remedial Action (UMTRA) Project site. Remedial action construction was directed by the Remedial Action Contractor (RAC).

  20. Research on the Construction of Project Critical Chain Model in South-to-North Water Diversion Project with Multi-Resource Constraints Based on Portfolio Technology

    Directory of Open Access Journals (Sweden)

    Jing-chun FENG

    2011-06-01

    Full Text Available Recently, the critical chain study has become the hot spot within the project management research field, so as the construction of it with multi-resource constraints become the new research subject. Referring to System Analysis Theory and Project Portfolio Theory, this paper discusses the creation of project portfolio based on project similarity, and definition of priority in multi-resource allocation based on quantitative analysis. Then according to the theory on critical chain construction, the author made relevant research and proposed the construction model with the multi-resource constraints, which to be applied to the critical chain construction of A-bid section in South-to-North Water Diversion Project. And necessary contrast analysis with the Comprehensive Treatment Construction Method and Aggressive Treatment Construction Method also has been made within this paper.

  1. Defining collaborative elements in an effective and efficient collaboration in a construction project

    DEFF Research Database (Denmark)

    Bohnstedt, Kristian Ditlev; Wandahl, Søren

    2018-01-01

    through experimental construction projects and debates and, on this basis, demanded and released guidelines for public and publicly funded construction projects. In the quest of defining collaborative elements, previous efforts have been reviewed, thus, identifying most successful initiatives and the used...... collaborative elements. These elements will be included in a study where they will go through a verification process. The themes derived from a contraction of the identified aspects in collaboration through the past two decades in the Danish construction industry were examined to conclude on which of the themes...... are actually encompassed in effective and efficient collaboration. This verification process will generate collaborative elements. There will be a fixed focus on which of the themes and elements that is theoretically included in an effective and efficient collaboration and how these relate to practical...

  2. Using Intelligent Techniques in Construction Project Cost Estimation: 10-Year Survey

    Directory of Open Access Journals (Sweden)

    Abdelrahman Osman Elfaki

    2014-01-01

    Full Text Available Cost estimation is the most important preliminary process in any construction project. Therefore, construction cost estimation has the lion’s share of the research effort in construction management. In this paper, we have analysed and studied proposals for construction cost estimation for the last 10 years. To implement this survey, we have proposed and applied a methodology that consists of two parts. The first part concerns data collection, for which we have chosen special journals as sources for the surveyed proposals. The second part concerns the analysis of the proposals. To analyse each proposal, the following four questions have been set. Which intelligent technique is used? How have data been collected? How are the results validated? And which construction cost estimation factors have been used? From the results of this survey, two main contributions have been produced. The first contribution is the defining of the research gap in this area, which has not been fully covered by previous proposals of construction cost estimation. The second contribution of this survey is the proposal and highlighting of future directions for forthcoming proposals, aimed ultimately at finding the optimal construction cost estimation. Moreover, we consider the second part of our methodology as one of our contributions in this paper. This methodology has been proposed as a standard benchmark for construction cost estimation proposals.

  3. New construction of the Kelchbach hydropower installation - Preliminary project; Vorprojekt Neubau Kraftwerk Kelchbach. Programm Kleinwasserkraftwerke - Schlussbericht

    Energy Technology Data Exchange (ETDEWEB)

    Kalbermatten, J.

    2009-09-15

    This final report for the Swiss Federal Office of Energy (SFOE) describes the preliminary project for the new construction of a small hydropower installation on the Kelchbach stream in Naters, Switzerland. After a pressure-pipe rupture, the old, over 100 year-old installation was closed down. The replacement installation is planned to increase power production. The works necessary for the realisation of this hydropower project are described and discussed. Several older studies on the replacement of the installation are listed. Three variants are presented and discussed as are hydrological data on the project. Cost estimates are presented and discussed. Estimates of energy production are also presented and discussed, as is the economic viability of the project. Environmental aspects of the project are also examined.

  4. Micro-propulsion research; challenges towards future nano-satellite projects

    NARCIS (Netherlands)

    Cervone, A.; Zandbergen, B.; Bouwmester, J.; Guo, J.

    2013-01-01

    The Space Systems Engineering department at the Faculty of Aerospace Engineering is hard at work miniaturizing satellite subsystems to accommodate the growing use of small satellites. One of the challenges the department has taken on is research into micro-propulsion. The limitations that come with

  5. Facilitating Client Value Creation in the Conceptual Design Phase of Construction Projects: A Workshop Approach

    Directory of Open Access Journals (Sweden)

    Mikael Hygum Thyssen

    2010-05-01

    Full Text Available If client values are not fully understood in a construction project it is likely to result in either low fulfilment of client expectations or multiple design alterations during the project process which lead to additional costs and frustration among the project participants. However, it is not a straightforward management task to operationalize client value in construction. Within this context, the client group comprises multiple stakeholders, which often have conflicting goals and values that may not be fully realized by the stakeholders themselves. The management challenge is further complicated by the fact that the delivery team, which is responsible for understanding and delivering client value, is made up of even more different parties. The article reports the initial outcome of a joint research project between academics and practitioners, which aims to develop a practical workshop model that incorporates client values into the conceptual design of construction projects. The workshop model draws on value management and lean thinking as underlying principles in an attempt to address the ambiguous concept of `value'. DOI: 10.3763/aedm.2008.0095

  6. Critical management practices influencing on-site waste minimization in construction projects.

    Science.gov (United States)

    Ajayi, Saheed O; Oyedele, Lukumon O; Bilal, Muhammad; Akinade, Olugbenga O; Alaka, Hafiz A; Owolabi, Hakeem A

    2017-01-01

    As a result of increasing recognition of effective site management as the strategic approach for achieving the required performance in construction projects, this study seeks to identify the key site management practices that are requisite for construction waste minimization. A mixed methods approach, involving field study and survey research were used as means of data collection. After confirmation of construct validity and reliability of scale, data analysis was carried out through a combination of Kruskal-Wallis test, descriptive statistics and exploratory factor analysis. The study suggests that site management functions could significantly reduce waste generation through strict adherence to project drawings, and by ensuring fewer or no design changes during construction process. Provision of waste skips for specific materials and maximisation of on-site reuse of materials are also found to be among the key factors for engendering waste minimization. The result of factor analysis suggests four factors underlying on-site waste management practices with 96.093% of total variance. These measures include contractual provisions for waste minimization, waste segregation, maximisation of materials reuse and effective logistic management. Strategies through which each of the underlying measures could be achieved are further discussed in the paper. Findings of this study would assist construction site managers and other site operatives in reducing waste generated by construction activities. Copyright © 2016 Elsevier Ltd. All rights reserved.

  7. A Novel Resource-Leveling Approach for Construction Project Based on Differential Evolution

    Directory of Open Access Journals (Sweden)

    Hong-Hai Tran

    2014-01-01

    Full Text Available In construction engineering, project schedules are commonly established by the critical path method. Nevertheless, these schedules often lead to substantial fluctuations in the resource profile that are not only impractical but also costly for the contractors to execute. Therefore, in order to smooth out the resource profile, construction managers need to perform resource-leveling procedures. This paper proposes a novel approach for resource leveling, named as resource leveling based on differential evolution (RLDE. The performance of the RLDE is compared to that of Microsoft Project software, the genetic algorithm, and the particle swarm optimization algorithm. Experiments have proved that the newly developed method can deliver the most desirable resource-leveling result. Thus, the RLDE is an effective method and it can be a useful tool for assisting managers/planners in the field of project management.

  8. Estimation of increased regional income that emanates from economically justified road construction projects

    Directory of Open Access Journals (Sweden)

    W. J. Pienaar

    2005-09-01

    Full Text Available This article identifies the possible development benefits than can emanate from economically justified road construction projects. It shows how the once-off increase in regional income resulting from investment in road construction projects, and the recurring additional regional income resulting from the use of new or improved roads can be estimated. The difference is shown that exists between a cost-benefit analysis (to determine how economically justified a project is and a regional economic income analysis (to estimate the general economic benefits that will be developed by investment in and usage of a road. Procedures are proposed through which the once-off and recurring increases in regional income can be estimated by using multiplier and accelerator analyses respectively. Finally guidelines are supplied on the appropriate usage of input variables in the calculation of the regional income multiplier.

  9. INFORMATION MODELING OF LIFE CYCLE OF HIGH-RISE CONSTRUCTION PROJECTS

    Directory of Open Access Journals (Sweden)

    Gusakova Elena Aleksandrovna

    2018-02-01

    Full Text Available To date, many years’ experience in the construction and operation of high-rise buildings has been accumulated. Its analysis reveals not only the engineering and organizational-technological specifics of such projects, but also systemic gaps in the field of management. In the implementation of large-scale and unique projects for high-rise buildings, the problems and tasks of improving approaches to managing the full life cycle of projects and methods, which will improve their competitiveness, become topical. The systems being used have largely exhausted their resource efficiency, which is associated with automation of traditional “inherited” processes and management structures, as well as development of IT-systems focused on digitalization of the activities of construction company, rather than the project. To solve these problems, it is proposed to carry out: reengineering of the schemes of information interaction between the project’s participants; formation of integrated digital environment for the life cycle of the project; development of systems for integrating data management and project management. Subject: problems, approaches and methods of digitalization of project’s life cycle management in relation to the specifics and features of high-rise buildings. Research objectives: substantiation of the most perspective approaches and methods of information modeling of high-rise construction as the basis for managing the full life cycle of the given project. Materials and methods: the experience of digitalization of design, construction, operation and development of high-rise buildings, presented in specialized literature, is analyzed. The methods for integrating information models of various stages of project’s life cycle and for information interaction of project’s participants are considered. Results: the concept of forming a single digital environment for the project is proposed, taking into account the features of the life

  10. Prioritization of Delay Factors for NPP Construction Risk in International Project by Using AHP Methodology

    Energy Technology Data Exchange (ETDEWEB)

    Hossen, Muhammed Mufazzal; Kang, Sunkoo; Kim, Jonghyun [KEPCO International Nuclear Graduate School, Ulsan (Korea, Republic of)

    2014-10-15

    It is crucial for the nuclear power plant project decision makers and management personnel to identify the actual factors of construction delay and their ranking in order to take preventive actions. NPP project is complex in nature and the construction phase is one of the most key phase which is subject to many factors result from many sources. From experience, nuclear projects have faced challenges similar to other complex mega projects with additional nuclear specific issues and life time cost of nuclear reactor is concentrated upfront as capital cost, and therefore delays in construction may become intolerable in terms of both lost revenues and interest on the capital. Budget over-runs and delays on next generation new build nuclear projects in recent years clearly demonstrate that the nuclear industry continues to repeat its failed management and project control processes of the past. Similar to major infra-structure projects, actual completion times can vary substantially from initial estimates but this uncertainty is too crucial to the nuclear industry due to high levels of capital at risk, for every year a project is delayed the levelized cost of electricity increases by approximately 8-10%. causes of delay, to develop a generalized AHP model for delay factors, and to prioritize the risk in different factors in various levels of construction phase in international turnkey NPP project. This paper describes and prioritizes Nuclear Power Plant (NPP) construction schedule delay factor for turnkey international project. This study also determines the different party's importance in percentage behind the construction schedule delay of NPP which constitutes main contractor (28.4%), regulatory authority (27.3%), financial and country factor (23.5%), and utility (20.8%). Decision makers of nuclear industry can understand the significance of different factors on NPP construction phase and they can apply risk informed decision making to avoid unexpected

  11. Nimbus Satellite Data Rescue Project for Sea Ice Extent: Data Processing

    Science.gov (United States)

    Campbell, G. G.; Sandler, M.; Moses, J. F.; Gallaher, D. W.

    2011-12-01

    Early Nimbus satellites collected both visible and infrared observations of the Earth at high resolution. Nimbus I operated in September, 1964. Nimbus II operated from April to November 1966 and Nimbus III operated from May 1969 to November 1969. We will discuss our procedures to recover this data into a modern digital archive useful for scientific analysis. The Advanced Videocon Camera System data was transmitted as an analog signal proportional to the brightness detected by a video camera. This was archived on black and white film. At NSIDC we are scanning and digitizing the film images using equipment derived from the motion picture industry. The High Resolution Infrared Radiance data was originally recorded in 36 bit words on 7 track digital tapes. The HRIR data were recently recovered from the tapes and TAP (tape file format from 1966) files were placed in EOSDIS archives for online access. The most interesting parts of the recovery project were the additional processing required to rectify and navigate the raw digital files. One of the artifacts we needed to identify and remove were fiducial marks representing latitude and longitude lines added to the film for users in the 1960's. The IR data recording inserted an artificial random jitter in the alignment of individual scan lines. We will describe our procedures to navigate, remap, detect noise and remove artifacts in the data. Beyond cleaning up the HRIR swath data or the AVCS picture data, we are remapping the data into standard grids for comparisons in time. A first run of all the Nimbus 2 HRIR data into EASE grids in NetCDF format has been completed. This turned up interesting problems of overlaps and missing data issues. Some of these processes require extensive computer resources and we have established methods for using the 'Elastic Compute Cloud' facility at Amazon.com to run the many processes in parallel. In addition we have set up procedures at the University of Colorado to monitor the ongoing

  12. The use of Game Theory to solve conflicts in the project management and construction industry

    Directory of Open Access Journals (Sweden)

    José Ramón San Cristóbal

    2015-01-01

    Full Text Available A typical construction project involves a wide range of disparate professionals, in many cases geographically distributed, working together for a relatively short period of time on the design and construction of a facility. Since organizations are becoming flatter, culturally rich, geographically diverse and intensely competitive, the possibilities for conflict in such environments are greater. Negotiation is an important aspect of a project and plays an important role in resolving claims, preventing disputes, and keeping a harmonious relationship between project participants. Part of any project manager’s role as a leader is to recognize conflict, understand the sources of conflict and manage it, and to do this a project manager must be able to understand the basics of negotiation theory and have sufficient competencies to lead in such situations. To address the complex technical and human issues in negotiation, different negotiation theories and models are available which mainly include game theory, economic theory, and behavior theory. Since Game Theory provides, by its very nature, the appropriate tools for the analysis and eventual solution of conflicts of any kind, this paper uses a model based on Game Theory in order to identify the activities that are responsible for the delays in a project and divide the costs among them.

  13. Project scheduling method with time using MRP system – A case study: Construction project in Libya

    Directory of Open Access Journals (Sweden)

    Abdallah Ali Imetieg

    2015-04-01

    Full Text Available Materials Requirements and Planning (MRP is a system of production planning and inventory control, which is used to manage manufacturing processes. Most MRP systems are software-based and are used to ensure that the materials are available for production, that the products are available for delivery to customers, that the lowest possible material and product level is maintained in store, as well as to plan delivery schedules and purchasing activities. Upon completion of scheduling, begins the process of follow-up, which includes the achievement of the project goals in terms of quantity, quality and costs in accordance with deadlines. MRP system was applied to project of 5000 housing units in Solug area, which is close to Benghazi city, Libya, with the aim to provide necessary cash flow to pay dues on time without delay to all involved project sub-contractors and material suppliers, to ensure the smooth flow of operations, as well as to diminish costs by reduction of temporary storages and rented areas. There is a correlation between time and cost of each activity. If the required time is shorter than the scheduled time of the certain activity, it would demand more resources, which further leads to the increase in direct costs of the given activity. Therefore, the output of MRP is important since commands are issued through planning in order to launch the suggested orders with the required quantities and within the limited time period.

  14. Toward lean satellites reliability improvement using HORYU-IV project as case study

    Science.gov (United States)

    Faure, Pauline; Tanaka, Atomu; Cho, Mengu

    2017-04-01

    Lean satellite programs are programs in which the satellite development philosophy is driven by fast delivery and low cost. Though this concept offers the possibility to develop and fly risky missions without jeopardizing a space program, most of these satellites suffer infant mortality and fail to achieve their mission minimum success. Lean satellites with high infant mortality rate indicate that testing prior to launch is insufficient. In this study, the authors monitored failures occurring during the development of the lean satellite HORYU-IV to identify the evolution of the cumulative number of failures against cumulative testing time. Moreover, the sub-systems driving the failures depending on the different development phases were identified. The results showed that half to 2/3 of the failures are discovered during the early stage of testing. Moreover, when the mean time before failure was calculated, it appeared that for any development phase considered, a new failure appears on average every 20 h of testing. Simulations were also performed and it showed that for an initial testing time of 50 h, reliability after 1 month launch can be improved by nearly 6 times as compared to an initial testing time of 20 h. Through this work, the authors aim at providing a qualitative reference for lean satellites developers to better help them manage resources to develop lean satellites following a fast delivery and low cost philosophy while ensuring sufficient reliability to achieve mission minimum success.

  15. Project Management for a Wind Turbine Construction by Applying Fuzzy Multiple Objective Linear Programming Models

    Directory of Open Access Journals (Sweden)

    He-Yau Kang

    2016-12-01

    Full Text Available Meeting the demand of energy is a challenge for many countries these days, and generating electricity from renewable resources has become a main trend for future economic development. The construction of a renewable energy plant is costly and timely; therefore, a good project management model is essential. In this paper, a fuzzy multiple objective linear programming (FMOLP model is constructed based on program evaluation and review technique (PERT first. With the consideration of the different degrees of importance of the multiple objectives, a fuzzy multiple weighted-objective linear programming (FMWOLP model is constructed next. Through each proposed model, a compromise solution can be devised to maximize the total degree of satisfaction while considering multiple objectives. The results can provide references for the management on what activities and how long these activities should be crashed, how much the total project cost should be, and how long the total project duration time should be. Finally, the proposed models are applied to a case study of a wind turbine construction in Taiwan.

  16. Exploring factors affecting owners' trust of contractors in construction projects: a case of China.

    Science.gov (United States)

    Tai, Shuangliang; Sun, Chengshuang; Zhang, Shoujian

    2016-01-01

    It has been found that a low level of trust among members of a construction project team leads to poor performance in China. Many researchers have described the challenges, consequently advocating partnering as an attractive approach for more valuable cooperation. Because substantial investments have been poured into construction projects since the year 2000, trust research will improve the performance of construction projects and will be meaningful to the Chinese construction industry. The purpose of this paper is to investigate the attributes affecting owners' trust of contractors, to understand the potential properties of these factors, and to rank the factors in order of importance. Twenty-four attributes are identified from a literature review. Supported by qualitative reviews, a questionnaire is conducted to obtain relevant data, and 168 valid responses are obtained for data analysis. Principal component analysis (PCA) is employed to find the factor structure of the identified trust attributes. By the method of PCA, the attributes are extracted into eight factors, including interaction history, information sharing and communication, contract and institution, relation-specific investment, reputation, integrity, competence, and opportunistic behaviour. The value and originality of this paper are embodied in using PCA to understand the various attribute groupings and to illuminate trust impact factors in the Chinese context. When they understand the critical factors affecting trust better, owners and contractors can devise more appropriate strategies to improve performance.

  17. Facilitating value creation and delivery in construction projects via front-end loading

    DEFF Research Database (Denmark)

    Thyssen, Mikael Hygum; Emmitt, Stephen; Bonke, Sten

    2008-01-01

    The potential and the need for the construction industry to improve performance are recogni-zed in a vast amount of literature from all over the world. The literature addressing this issue and the initiatives being taken in attempting to enhance productivity tends to focus on the con-struction ph......The potential and the need for the construction industry to improve performance are recogni-zed in a vast amount of literature from all over the world. The literature addressing this issue and the initiatives being taken in attempting to enhance productivity tends to focus on the con......-struction phase of the building projects. However it is in the early design phase that client value is established and the scene is set for everything that follows. Productivity in the construction phase is strongly dependent on performance of the design team and real client value will not be achieved...... with a major contractor developed a value based work-shop model that seeks to capture client values and manage the subsequent stages of the building process within a Lean framework striving to maximize value and reduce waste. This paper reports the initial findings of a joint research project between academic...

  18. Comprehensive evaluation of environmental and economic benefits of China's urban underground transportation construction projects.

    Science.gov (United States)

    Yang, Xiaobin; Chen, Zhilong; Guo, Dongjun

    2015-07-01

    Urban underground transportation projects are introduced to address problems of scarce green land and traffic pollution. As construction of urban underground transportation is still in its infancy, there is no definite quantitative measurement on whether the construction is beneficial and what influences it will place on the region in China. This study intends to construct a comprehensive evaluation method for evaluating social, economic and environmental benefits of urban underground transportation projects and proposes the concept, role and principle for evaluation of environmental and economic benefits. It figures out relationship between the environment and factors of city development. It also summarizes three relevant factors, including transportation, biophysics and social economy, and works out indicators to evaluate the influence of urban underground transportation construction. Based on Contingent Valuation Method (CVM), Cost of Illness Approach (CIA), Human Capital Approach (HCA), this paper constructs 13 monetization calculation models for social, economic and environmental benefits in response to seven aspects, namely, reducing noise pollution and air pollution, using land efficiently, improving traffic safety, reducing traffic congestion, saving shipping time and minimizing transportation costs.

  19. Medial Temporal Lobe Contributions to Episodic Future Thinking: Scene Construction or Future Projection?

    Science.gov (United States)

    Palombo, D J; Hayes, S M; Peterson, K M; Keane, M M; Verfaellie, M

    2018-02-01

    Previous research has shown that the medial temporal lobes (MTL) are more strongly engaged when individuals think about the future than about the present, leading to the suggestion that future projection drives MTL engagement. However, future thinking tasks often involve scene processing, leaving open the alternative possibility that scene-construction demands, rather than future projection, are responsible for the MTL differences observed in prior work. This study explores this alternative account. Using functional magnetic resonance imaging, we directly contrasted MTL activity in 1) high scene-construction and low scene-construction imagination conditions matched in future thinking demands and 2) future-oriented and present-oriented imagination conditions matched in scene-construction demands. Consistent with the alternative account, the MTL was more active for the high versus low scene-construction condition. By contrast, MTL differences were not observed when comparing the future versus present conditions. Moreover, the magnitude of MTL activation was associated with the extent to which participants imagined a scene but was not associated with the extent to which participants thought about the future. These findings help disambiguate which component processes of imagination specifically involve the MTL. Published by Oxford University Press 2016.

  20. Using Project Performance to Measure Effectiveness of Quality Management System Maintenance and Practices in Construction Industry

    Directory of Open Access Journals (Sweden)

    Tiong Kung Leong

    2014-01-01

    Full Text Available This paper proposed seven existing and new performance indicators to measure the effectiveness of quality management system (QMS maintenance and practices in construction industry. This research is carried out with a questionnaire based on QMS variables which are extracted from literature review and project performance indicators which are established from project management's theory. Data collected was analyzed using correlation and regression analysis. The findings indicate that client satisfaction and time variance have positive and significant relationship with QMS while other project performance indicators do not show significant results. Further studies can use the same project performance indicators to study the effectiveness of QMS in different sampling area to improve the generalizability of the findings.

  1. Extreme Energy Events Project: Construction of the detectors and installation in Italian High Schools

    CERN Document Server

    Abbrescia, M; An, S; Antolini, R; Badalà, A; Baldini Ferroli, R; Bencivenni, G; Blanco, F; Bressan, E; Chiavassa, A; Chiri, C; Cifarelli, L; Cindolo, F; Coccia, E; De Pasquale, S; Di Giovanni, A; D’Incecco, M; Fabbri, F L; Frolov, V; Garbini, M; Gustavino, C; Hatzifotiadou, D; Imponente, G; Kim, J; La Rocca, P; Librizzi, F; Maggiora, A; Menghetti, H; Miozzi, S; Moro, R; Panareo, M; Pappalardo, G S; Piragino, G; Riggi, F; Romano, F; Sartorelli, G; Sbarra, C; Selvi, M; Serci, S; Williams, C; Zuyeuski, R

    2008-01-01

    The EEE Project, conceived by its leader Antonino Zichichi, aims to detect Extreme Energy Events of cosmic rays with an array of muon telescopes distributed over the Italian territory. The Project involves Italian High Schools in order to introduce young people to Physics, also countervailing the recent crisis of university scientific classes inscriptions. The detectors for the EEE telescopes are Multigap Resistive Plate Chambers (MRPC) and have been constructed by teams of High School students who went in shift at the CERN laboratories. The mechanics and the electronics were developed by groups of researchers from CERN, the Italian Centro Fermi and INFN. The first group of schools of the EEE Project has inaugurated their telescopes recently. A status report of the Project and the preliminary results are presented.

  2. ANALYSIS OF SUCCESS CRITERIA IN ENGINEERING, PROCUREMENT AND CONSTRUCTION (EPC PROJECTS

    Directory of Open Access Journals (Sweden)

    Fabio Dias Bahia

    2011-05-01

    Full Text Available The projects in the petroleum industry (oil, gas and derivatives are characterized by their technical and management complexity. These projects are planned, designed, and executed by large, distributed, multi-disciplinary teams that strive to implement innovative solutions that will allow exploring and producing oil and gas from deep water fields (Offshore. Based on a literature review related to “Engineering, Procurement and Construction (EPC Projects” and “Project Success”, and a questionnaire responded by 37 experienced professionals, working for 24 different organizations of the sector, it was possible to identify the main objectives or success criteria (Cost, Time, Quality, Scope, Customer Satisfaction, Security, Team Satisfaction and Shareholder Satisfaction for the Brazilian context. It is important to emphasize that this paper discuss EPC Offshore Project success from the EPC contractors (named in Brazil as “EPCistas” point of view.

  3. Advanced Techniques for Non-Collocated Fault Detetion of Satellite Formations Project

    Data.gov (United States)

    National Aeronautics and Space Administration — This proposal is for the development of a dynamic fault detection filter for a formation of satellites operating in a highly nonlinear dynamic environment but...

  4. Fault Detection and Isolation of Satellite Formations using a Ground Station Project

    Data.gov (United States)

    National Aeronautics and Space Administration — This proposal is for the development a fault detection and isolation (FDI) algorithm for a formation of satellites but processed at a ground station. The algorithm...

  5. Synchronized Position and Hold Reorient Experimental Satellites - International Space Station (SPHERES-ISS) Project

    Data.gov (United States)

    National Aeronautics and Space Administration — Payload Systems Inc. (PSI) and the MIT Space Systems Laboratory (MIT-SSL) propose an innovative research program entitled SPHERES-ISS that uses their satellite...

  6. Regeneratively-Cooled, Pump-Fed Propulsion Technology for Nano / Micro Satellite Launch Vehicles Project

    Data.gov (United States)

    National Aeronautics and Space Administration — Ventions proposes the development of a pump-fed, 2-stage nano launch vehicle for low-cost on demand placement of cube and nano-satellites into LEO. The proposed...

  7. Servo-Drive Amplifier for Micro-Satellite Superconductor-Levitated Flywheels Project

    Data.gov (United States)

    National Aeronautics and Space Administration — A new servo-drive technology is available to support energy storage and navigation for micro-satellites. Exploiting the ?pinning? effect of high-temperature...

  8. Low Heat-Leak YBCO Leads for Satellite-Borne ADR Magnets Project

    Data.gov (United States)

    National Aeronautics and Space Administration — Future satellite missions carrying X-ray spectrometers will be cooled to milliKelvin temperatures by multi-stage Adiabatic Demagnetization Refrigerators (ADR),...

  9. Low-Cost and High-Performance Propulsion for Small Satellite Applications Project

    Data.gov (United States)

    National Aeronautics and Space Administration — While small satellites continue to show immense promise for high-capability and low-cost missions, they remain limited by post-deployment propulsion for a variety of...

  10. Flexible Low Cost Avionics for NanoSatellite Launch Vehicle Control and GPS Metric Tracking Project

    Data.gov (United States)

    National Aeronautics and Space Administration — In this proposal, Tyvak Nano-Satellite Systems LLC (Tyvak) will develop nano-launch vehicle avionics solutions based on the latest commercial electronics products...

  11. SPS-ALPHA: The First Practical Solar Power Satellite via Arbitrarily Large PHased Array Project

    Data.gov (United States)

    National Aeronautics and Space Administration — SPS-ALPHA (Solar Power Satellite via Arbitrarily Large Phased Array) is a novel, bio-mimetic approach to the challenge of space solar power. If successful, this...

  12. Casa Grande Ruins National Monument Vegetation Mapping Project - Quickbird Satellite Imagery

    Data.gov (United States)

    National Park Service, Department of the Interior — This imagery was acquired on December 3, 2007 by DigitalGlobe, Inc.'s Quickbird satellite. Its 4 multispectral bands (blue, green, red, near infrared), together with...

  13. Knowledge sharing in construction partnering projects - redundancy, boundary objects and brokers

    DEFF Research Database (Denmark)

    Koch, Christian; Thuesen, Christian

    2013-01-01

    , multiple memberships and different levels of participation, and accompanied by a governance frame. The paper discusses central mechanisms for coordinating knowledge in such a complex construction project. The knowledge relations are conceptualised through focusing on redundancy, understood as negotiated...... is on two dialogue excerpts, one on process, and one on product knowledge exchanges. The diversity and disjunctive feature of the practices form a condition of possibility for knowledge handling and synthesis into the built construct. Relation-based interaction is necessary with boundary objects and brokers...

  14. Construction and assembly of the wire planes for the MicroBooNE Time Projection Chamber

    Energy Technology Data Exchange (ETDEWEB)

    Acciarri, R.; Adams, C.; Asaadi, J.; Danaher, J.; Fleming, B. T.; Gardner, R.; Gollapinni, S.; Grosso, R.; Guenette, R.; Littlejohn, B. R.; Lockwitz, S.; Raaf, J. L.; Soderberg, M.; John, J. St.; Strauss, T.; Szelc, A. M.; Yu, B.

    2017-03-01

    In this paper we describe how the readout planes for the MicroBooNE Time Projection Chamber were constructed, assembled and installed. We present the individual wire preparation using semi-automatic winding machines and the assembly of wire carrier boards. The details of the wire installation on the detector frame and the tensioning of the wires are given. A strict quality assurance plan ensured the integrity of the readout planes. The different tests performed at all stages of construction and installation provided crucial information to achieve the successful realization of the MicroBooNE wire planes.

  15. Construction Claim Types and Causes for a Large-Scale Hydropower Project in Bhutan

    Directory of Open Access Journals (Sweden)

    Bonaventura H.W. Hadikusumo

    2015-01-01

    Full Text Available Hydropower construction projects are complex and uncertain, have long gestational periods and involve several parties. Furthermore, they require the integration of different components (Civil, Mechanical and Electrical to work together as a single unit. These projects require highly specialised designs, detailed plans and specifications, high-risk construction methods, effective management, skilful supervision and close coordination. Thus, claims are common in such projects. These claims are undesirable because they require significant time and resources to resolve and cause adversarial relationships among the parties involved. Therefore, it is in the common interest of all involved parties to prevent, minimise, or resolve claims as amicably as possible. Identifying common claim types and their causes is essential in devising techniques to minimise and avoid them in future projects. This report details a case study performed on a large-scale hydropower project in Bhutan. The findings of this case study indicate that differing site conditions are the major contributor of impact and change claims and 95% of total claims can be settled by negotiation, whereas 5% of claims can be settled by arbitration.

  16. Early cost estimating for road construction projects using multiple regression techniques

    Directory of Open Access Journals (Sweden)

    Ibrahim Mahamid

    2011-12-01

    Full Text Available The objective of this study is to develop early cost estimating models for road construction projects using multiple regression techniques, based on 131 sets of data collected in the West Bank in Palestine. As the cost estimates are required at early stages of a project, considerations were given to the fact that the input data for the required regression model could be easily extracted from sketches or scope definition of the project. 11 regression models are developed to estimate the total cost of road construction project in US dollar; 5 of them include bid quantities as input variables and 6 include road length and road width. The coefficient of determination r2 for the developed models is ranging from 0.92 to 0.98 which indicate that the predicted values from a forecast models fit with the real-life data. The values of the mean absolute percentage error (MAPE of the developed regression models are ranging from 13% to 31%, the results compare favorably with past researches which have shown that the estimate accuracy in the early stages of a project is between ±25% and ±50%.

  17. THE PERFORMANCE OF THE PROJECT COALITION IN THE UK CONSTRUCTION INDUSTRY A CONCEPTUAL OPTIMISATION MODEL

    Directory of Open Access Journals (Sweden)

    David G. Proverbs

    2000-01-01

    Full Text Available The UK construction industry has long been criticised for engendering adversarial relationships among project participants. The nature of interrelationships ultimately determines overall project performance%2C in terms of finished product%2C and levels of performance and satisfaction for the participants. To investigate these interrelationships%2C the performance and satisfaction of each individual participant must be considered. Better understanding of the interrelationships should help reduce adversarialsm and improve the performance and satisfaction of each participant. The possible interrelationships that may exist are discussed based on %91soft knowledge%92 approaches%2C i.e. psychology%2C organisational behaviour and sociology. It is concluded that the performance of each participant is interdependent and essential towards project performance. Two levels of satisfaction%2C which determine the quality of working relationships between participants%2C are postulated. The first level of satisfaction %28i.e. satisfaction on achieving organisational objectives%29 is%2C to some extent%2C dependent on the second level of satisfaction %28i.e. satisfaction on the performance of the other participants%29. Therefore%2C within the construction project coalition%2C each participant has to be satisfied with the performance of the other participants if harmonious working relationships are to be sustained. Based on these%2C a conceptual model for optimising the relationships between main participants of the project coalition is presented. Abstract in Bahasa Indonesia : Coalition+participants%2C+Interrelationships%2C+Performance%2C+Satisfaction+

  18. 43 CFR 404.12 - Can Reclamation provide assistance with the construction of a rural water supply project under...

    Science.gov (United States)

    2010-10-01

    ... the construction of a rural water supply project under this program? 404.12 Section 404.12 Public... RECLAMATION RURAL WATER SUPPLY PROGRAM Overview § 404.12 Can Reclamation provide assistance with the construction of a rural water supply project under this program? Reclamation may provide assistance with the...

  19. Utilization of a designated environmental monitor for the design, construction, and regulatory compliance of transportation projects

    OpenAIRE

    Moran, L A; Morris, T J

    2001-01-01

    In April 1999, the Maryland State Highway Administration (SHA) initiated construction of the U.S. Route 113 project in Worcester County, Maryland. This multi-phased interstate roadway project will upgrade and dualize approximately 24 miles of existing two-lane highway to improve vehicular safety and traffic flow. As a special condition of the U.S. Clean Water Act, Section 404 permit, the SHA was required by U.S. Army Corp of Engineers-Baltimore District (COE) to utilize an independent Environ...

  20. MEASURING THE PERFORMANCE OF GUYANA’S CONSTRUCTION INDUSTRY USING A SET OF PROJECT PERFORMANCE BENCHMARKING METRICS

    Directory of Open Access Journals (Sweden)

    Christopher J. Willis

    2011-10-01

    Full Text Available A study measuring the performance of Guyana’s construction industry using a set of project performance benchmarking metrics was recently completed. The underlying premise of the study was that the aggregated performance of construction projects provides a realistic assessment of the performance of the construction industry, on the basis that construction projects are the mechanism through which the construction industry creates its tangible products. The fact that an influential government agency acted as owner of the study was critical to the data collection phase. The best approach for collecting project performance data in Guyana involves the utilisation of a researcher or team of researchers mining electronic and hard copy project documents. This study analysed approximately 270 construction projects to obtain an indication of the performance of guyana’s construction industry. It was found that sea defence projects performed the worst, whereas health facility projects performed the best. The main implication of this is that sea defence projects are likely to be the least efficient and, given their critical nature, there is an argument for urgent performance improvement interventions.

  1. THE EFFECT OF EXCHANGE RATE ON THE CONSTRUCTION PROJECTS AND PROTECTION METHODS

    Directory of Open Access Journals (Sweden)

    Handan AKSUYEK,

    2017-02-01

    Full Text Available As with all sectors, recent extreme changes occurred in the exchange rates have substantially affected the construction operations. While the rise in foreign exchange rates leads to harmful effects in the negative direction at the operations having foreign exchange – based debt or it provides also advantageous effect in the positive direction at the construction companies having foreign exchange – indexed investments. In this context, this sudden change in foreign exchange rates which cannot be predicted beforehand and emerges as a result of speculative events. As with all operations carrying out foreign exchange – based tasks, these fluctuations in the foreign exchange rate head first among the factors which affect the achievement or failure of the cost or profit targets previously determined by the construction companies as well. Therefore, the companies whose costs and profits consist of different units of currency in their construction agreements should apply to the hedging methods in order to be protected against the exchange rate. As for the main tools of protection method are the derivative products such as forward, futures, swap and optional contracts. In this study, the effect of exchange rate fluctuations on the completion costs of construction projects is scrutinized. Moreover, the tools which may be employed by the construction companies in order to get rid of exchange rate which adversely influence the building companies in both directions have been comparatively evaluated.

  2. Abitare Mediterraneo Project. An example of synergy between research and construction

    Directory of Open Access Journals (Sweden)

    Roberto Bologna

    2011-04-01

    Full Text Available The article illustrates the Abitare Mediterraneo project which has the aim of promoting industrial research and pre-competitive development for the integration of technological and architectural innovation and the energy-saving and environmental sustainability in the building projects in Mediterranean areas.The concept underlying the research is the idea of an «open system» as a structured and shared knowledge by means of which those involved in the construction sector can collaborate and encourage the development of building initiatives focused on high energy efficacy. The research will contribute operatively, proposing a formula to create a synergy between the research and production in the building sector. The research also involves a «construction model» to adopt for architecture in Mediterranean areas.

  3. Use of communication technologies in document exchange for the management of construction projects

    Science.gov (United States)

    Mesároš, Peter; Mandičák, Tomáš

    2016-06-01

    Information and communication technologies represent a set of people, processes, technical and software tools providing collection, transport, storage and processing of data for distribution and presentation of information. Particularly communication systems are the main tool for information exchange. Of the other part, these technologies have a broad focus and use. One of them is the exchange of documents in the management of construction projects. Paper discusses the issue of exploitation level of communication technologies in construction project management. The main objective of this paper is to analyze exploitation level of communication technologies. Another aim of the paper is to compare exploitation level or rate of document exchange by electronic communication devices and face-to-face communication.

  4. Use of communication technologies in document exchange for the management of construction projects

    Directory of Open Access Journals (Sweden)

    Mesároš Peter

    2016-06-01

    Full Text Available Information and communication technologies represent a set of people, processes, technical and software tools providing collection, transport, storage and processing of data for distribution and presentation of information. Particularly communication systems are the main tool for information exchange. Of the other part, these technologies have a broad focus and use. One of them is the exchange of documents in the management of construction projects. Paper discusses the issue of exploitation level of communication technologies in construction project management. The main objective of this paper is to analyze exploitation level of communication technologies. Another aim of the paper is to compare exploitation level or rate of document exchange by electronic communication devices and face-to-face communication.

  5. Bidding Strategy to Support Decision-Making Based on Comprehensive Information in Construction Projects

    Directory of Open Access Journals (Sweden)

    Ru Liang

    2016-01-01

    Full Text Available This paper develops a unified method to support contractor for bidding selection in construction projects. A cross-functional contractor with 28 candidate units distributed in the three departments (construction units, design units, and suppliers is used as an example. This problem is first formulated as a 0-1 quadratic programming problem through optimizing individual performance and collaborative performance of the candidate units based on individual information and collaborative information. Then, a multiobjective evolutionary algorithm is designed to solve this problem and a bidding selection problem for a major bridge project is used to demonstrate our proposed method. The results show that the decision-maker (DM obtains a better contractor if he pays more attention to collaborative performance.

  6. Study of Evaluation OSH Management System Policy Based On Safety Culture Dimensions in Construction Project

    Science.gov (United States)

    Latief, Yusuf; Armyn Machfudiyanto, Rossy; Arifuddin, Rosmariani; Mahendra Fira Setiawan, R.; Yogiswara, Yoko

    2017-07-01

    Safety Culture in the construction industry is very influential on the socio economic conditions that resulted in the country’s competitiveness. Based on the data, the accident rate of construction projects in Indonesia is very high. In the era of the Asian Economic Community (AEC) Indonesian contractor is required to improve competitiveness, one of which is the implementation of the project without zero accident. Research using primary and secondary data validated the results of the literature experts and questionnaire respondents were analyzed using methods SmartPLS, obtained pattern of relationships between dimensions of safety culture to improve the performance of Safety. The results showed that the behaviors and Cost of Safety into dimensions that significantly affect the performance of safety. an increase in visible policy-based on Regulation of Public Work and Housing No 5/PRT/M/2014 to improve to lower the accident rate.

  7. Accounting for the inaccuracies in demand forecasts and construction cost estimations in transport project evaluation

    DEFF Research Database (Denmark)

    Salling, Kim Bang; Leleur, Steen

    2014-01-01

    For decades researchers have claimedthat particularly demand forecasts and construction cost estimations are assigned with/affected by a large degree of uncertainty. Massively, articles,research documents and reports agree that there exists a tendencytowards underestimating the costs...... in demand and cost estimations and hence the evaluation of transport infrastructure projects. Currently, research within this area is scarce and scattered with no commonagreement on how to embed and operationalise the huge amount of empiricaldata that exist within the frame of Optimism Bias. Therefore...... convertingdeterministic benefit-cost ratios (BCRs) into stochasticinterval results. A new data collection (2009–2013) forms the empirical basis for any risk simulation embeddedwithin the so-calledUP database (UNITE project database),revealing the inaccuracy of both construction costs and demandforecasts. Accordingly...

  8. A computer based approach for Material, Manpower and Equipment managementin the Construction Projects

    Science.gov (United States)

    Sasidhar, Jaladanki; Muthu, D.; Venkatasubramanian, C.; Ramakrishnan, K.

    2017-07-01

    The success of any construction project will depend on efficient management of resources in a perfect manner to complete the project with a reasonable budget and time and the quality cannot be compromised. The efficient and timely procurement of material, deployment of adequate labor at correct time and mobilization of machinery lacking in time, all of them causes delay, lack of quality and finally affect the project cost. It is known factor that Project cost can be controlled by taking corrective actions on mobilization of resources at a right time. This research focuses on integration of management systems with the computer to generate the model which uses OOM data structure which decides to include automatic commodity code generation, automatic takeoff execution, intelligent purchase order generation, and components of design and schedule integration to overcome the problems of stock out. To overcome the problem in equipment management system inventory management module is suggested and the data set of equipment registration number, equipment number, description, date of purchase, manufacturer, equipment price, market value, life of equipment, production data of the equipment which includes equipment number, date, name of the job, hourly rate, insurance, depreciation cost of the equipment, taxes, storage cost, interest, oil, grease, and fuel consumption, etc. is analyzed and the decision support systems to overcome the problem arising out improper management is generated. The problem on labor is managed using scheduling, Strategic management of human resources. From the generated support systems tool, the resources are mobilized at a right time and help the project manager to finish project in time and thereby save the abnormal project cost and also provides the percentage that can be improved and also research focuses on determining the percentage of delays that are caused by lack of management of materials, manpower and machinery in different types of projects

  9. FOUNDATION OF THE RATIONAL LEVEL OF THE ORGANIZATIONAL AND TECHNOLOGICAL RELIABILITY IN CONSTRUCTION PROJECTS

    Directory of Open Access Journals (Sweden)

    MLODESTKY V. R.

    2015-09-01

    Full Text Available Statement of the problem. The main points of contractual obligations is their timely performance with ensuring the desired level of investments of the investment funds provided for in this contract. The longer the execution of the works under the contract, the higher the probability of violation of these terms. Analysis of construction projects over the past decade has shown that the situation has not changed significantly, according to [8] contemporary data on the construction of a number of objects from which it follows that the larger the object, and accordingly, the longer construction period, the more the actual deviation of the actual terms of the construction of the planned, up to 50...100% in some cases. The comparison of these data shows that the problem of ensuring reliable operation of the construction company on the stage of implementation of a specific project is relevant in the present time. Analysis of recent research. The analysis of researches in the field of the rational justification of organizational and technological reliability values shows that its range is in the range from 0.35 to 0.9, it indicates the absence of a reasoned approach to this issue. Of course, for a more reliable implementation of the plan one needs to have a certain amount of appropriate material and financial resources, but in the management process is another important resource that should be in possession of the subject of management this is information. The purpose and objectives of work. The aim of this work is the study of the rational level of organizational and technological reliability (OTR based on analysis of the need for this information. To achieve the goal of the article were set and solve the following tasks: - to establish the relationship between OTR and the right amount of information; - to determine the influence of the accuracy of determining the current state of the controlled parameter and the level of information; - to justify the

  10. METHODOLOGICAL ASPECTS OF CLASSIFICATION OF INVESTMENT MODELS APPLICABLE TO CONSTRUCTION PROJECTS

    OpenAIRE

    Yaskova Natalya Yurevna; Moskvichev Danil Vasilevich

    2012-01-01

    The paper covers the identification of basic investment models applicable to construction projects. They are needed to substantiate the transformation of the investment system, to identify the numerical values of the investment process, and to solve the problems that prevent the efficiency improvement of the investment system. As a result of the analysis, the authors have identified sixteen models that differ in the mode of investment, investment targets, types of investees, in...

  11. Defense Infrastructure: In-Kind Construction and Renovation Projects Initiated by DOD during Fiscal Year 2013

    Science.gov (United States)

    2015-09-01

    Allegheny Ballistics Laboratory Implement plant-wide infrastructure which will then support a paperless manufacturing execution system...a child development center with adjacent outdoor play area for 195 to 225 school -age (6 to10 years) childrene Yongsan Relocation Pland,e Host...nation funded constructione $8,298,953e 8. Army Garrison Humphreyse Project title: Construct Middle School and Elementary Schoole Purpose

  12. Adaption of structured analysis design techniques methodology for construction project planning

    OpenAIRE

    Agyekum-Mensah, G; Knight, A; Pasquire, C

    2012-01-01

    The construction industry has been heavily criticised by researchers and governmental organisations for its performance especially excessive delay. Ballard and Howell (2003) indicated that only about 50% of the tasks on weekly work plans are completed by the end of the plan week. This is a result of a lack of either effective project planning or effective production control. It therefore seems the traditional approach of planning is insufficient to meet the current demand and complexity of co...

  13. Construction and Initial Tests of the Time Projection Chamber at TRIUMF

    Science.gov (United States)

    Hargrove, C. K.; Mes, H.; Carter, A. L.; Hincks, E. P.; Kessler, D.; Beer, G. A.; Bryman, D.; Numao, T.; Olin, A.; Pearce, R. M.; Reeve, P.; Robertson, L. B.; Hasinoff, M.; Poutissou, J. M.; Macdonald, J. A.; Spuller, J.; Azuelos, G.; Depommier, P.; Martin, J. P.; Poutissou, R.; Anderson, H. L.; Wright, S. C.; McKee, R. J.; Blecher, M.; Gotow, K.

    1981-04-01

    We have constructed an apparatus to search for the lepton number violating decay of the muon μ-Z → e-Z. The apparatus is based on the Time Projection Chamber principle. The main advantages are a large solid angle simeq 60%, simple trigger, good energy resolution, particle identification and simplified electronics. The details of the apparatus are described and preliminary results are given.

  14. Manhattan Project buildings and facilities at the Hanford Site: A construction history

    Energy Technology Data Exchange (ETDEWEB)

    Gerber, M.S.

    1993-09-01

    This document thoroughly examines the role that the Hanford Engineer Works played in the Manhattan project. The historical aspects of the buildings and facilities are characterized. An in depth look at the facilities, including their functions, methods of fabrication and appearance is given for the 100 AREAS, 200 AREAS, 300 AREAS, 500, 800 and 900 AREAS, 600 AREA, 700 AREA, 1100 AREA and temporary construction structures.

  15. Exploitation of cloud computing in management of construction projects in Slovakia

    OpenAIRE

    Mandičák, Tomáš; Mesároš, Peter; Kozlovská, Mária

    2016-01-01

    The issue of cloud computing is a highly topical issue. Cloud computing represents a new model for information technology (IT) services based on the exploitation of Web (it represents a cloud) and other application platforms, as well as software as a service. In general, the exploitation of cloud computing in construction project management has several advantages, as demonstrated by several research reports. Currently, research quantifying the exploitation of cloud computing in the Slovak con...

  16. 42 CFR 137.291 - May Self-Governance Tribes carry out construction projects without assuming these Federal...

    Science.gov (United States)

    2010-10-01

    ... 42 Public Health 1 2010-10-01 2010-10-01 false May Self-Governance Tribes carry out construction... OF HEALTH AND HUMAN SERVICES TRIBAL SELF-GOVERNANCE Construction Nepa Process § 137.291 May Self-Governance Tribes carry out construction projects without assuming these Federal environmental...

  17. Construction

    Science.gov (United States)

    2002-01-01

    Harbor Deepening Project, Jacksonville, FL Palm Valley Bridge Project, Jacksonville, FL Rotary Club of San Juan, San Juan, PR Tren Urbano Subway...poor track record of service in rural hospitals and nursing homes; certain telecommunications franchises and privatized railroads. Legislative

  18. Potential Use of Communications and Project Management Systems in Remote Construction Projects: The Case of Saudi Electric Company

    Directory of Open Access Journals (Sweden)

    Bhzad Sidawi

    2012-01-01

    Full Text Available Remote projects have their unique problems that are caused mainly by the remoteness of the project itself thus the loose control over management. This is due to a number of reasons such as lack of human resources and infrastructure. Research studies that were undertaken worldwide - regarding this issue- has highlighted few unique management problems. The aim of this paper is to investigate how far the IT tools would help in managing remote construction projects in the Kingdom of Saudi Arabia (KSA. Due to the lack of previous research regarding remote projects within the Gulf region and the KSA, a pilot study was conducted in 2009 to define and test the wording of questions that are part of the main survey. The main survey was undertaken on Saudi Electric Company (SEC. The study found that IT systems and tools have the potential but this potential is hindered by a number of technical, managerial, staff factors. Therefore, successful application of IT systems would require changes to the present management settings at various levels. This would ensure that the SEC is capable of achieving the full benefit from using these advanced systems.

  19. Review of research trend in international construction projects: a bibliometric analysis

    Directory of Open Access Journals (Sweden)

    Wahyudi P Utama

    2016-06-01

    Full Text Available This paper presents the latest research development in international construction project (ICP domain from 1995 to 2014 as revealed in the construction management related journals. A systematic document retrieval method was employed to collect relevant articles. The identified papers were analyzed by using bibliometric analysis comprising the investigation of the number of publication, the main originators of the research contributions, their affiliations, the most cited papers, and the sources of research funding as well as the research methods used. Ninety-eight relevant articles obtained from 12 major journals associated with construction management studies were successfully assessed. The results show an upward trend with some fluctuations during the period and the bibliometric information of ICP studies was successfully presented.

  20. SPATIAL ANALYSIS BASED HEALTH AND SAFETY RISK ASSESSMENT FOR LINEAR CONSTRUCTION PROJECTS

    Directory of Open Access Journals (Sweden)

    H. Atay

    2012-07-01

    Full Text Available This paper describes an on-going study that aims to develop a web-based spatial decision support system model for proactive health and safety management in linear construction projects. Currently, health and safety management is usually performed reactively instead of proactive management since hazard identification and risk assessment is mostly performed on paper based documents that are not effectively used at site. This leads to accidents and fatalities at construction sites. The proposed system automatically identifies the spatial risks according to the topographic and layout map of the site, project specification and health and safety regulations by means of spatial analysis. It enables the workers and management personnel to access the possible hazards and thematic risk map of any portion of the construction site for linear projects. Finally, the described approach provides the proposed mitigation measures for the identified hazards. The developed system is expected to raise awareness in H&S among workers and engineers, and increase participation of workers to health and safety management.

  1. Identifying The Effective Factors for Cost Overrun and Time Delay in Water Construction Projects

    Directory of Open Access Journals (Sweden)

    D. Mirzai Matin

    2016-08-01

    Full Text Available Water construction projects in Iran frequently face problems which cause cost overrun and time delay, the two most common issues in construction projects in general. The objective of this survey is to identify and quantify these problems and thus help in avoiding them. This survey represents a collection of the most significant problems found in the literature, classified into 11 groups according to their source. The questionnaire form used contains 84 questions which were answered by random engineers who work in water construction projects. The Relative Importance Weight (RIW method is used to weight the importance of each one of the 84 problems. The focus of this survey is on overall top ten issues which are: bureaucracy in bidding method, inflation, economical condition of the government, not enough information gathered and surveys done before design, monthly payment difficulties, material cost changes, law changes by the government, financial difficulties, mode of financing and payment for completed work and changes made by the owner. A section for each of these issues provides additional information about them. In the full text of this survey the same weighting method is used to classify the main groups, and the results show that issues related to the groups of government, owner and consultant has the most significant impact. The last part of this survey describes the point of view of the engineers who took part in this survey and the recommendations they made.

  2. The effect of leader emotional intelligence on leader-follower chemistry: A study of construction project managers

    OpenAIRE

    Pryke, S.; Lunic, D.; Badi, S. M.

    2015-01-01

    Extending Nicolini’s (2002) notion of project ‘chemistry’, this paper proposes the development of a ‘leader-follower chemistry’ model associated with the quality of dyadic interpersonal communication in construction projects. The paper focuses on the project manager as leader and attempts to deepen understanding of the effect of a project manager’s Emotional Intelligence (EI) on the quality of interpersonal communication with their followers- being other members of the project team. While a p...

  3. GHG emission quantification for pavement construction projects using a process-based approach

    Directory of Open Access Journals (Sweden)

    Charinee Limsawasd

    2017-03-01

    Full Text Available Climate change and greenhouse gas (GHG emissions have attracted much attention for their impacts upon the global environment. Initiating of new legislation and regulations for control of GHG emissions from the industrial sectors has been applied to address this problem. The transportation industries, which include operation of road pavement and pavement construction equipment, are the highest GHG-emitting sectors. This study presents a novel quantification model of GHG emissions of pavement construction using process-based analysis. The model is composed of five modules that evaluate GHG emissions. These are: material production and acquisition, (2 material transport to a project site, (3 heavy equipment use, (4 on-site machinery use, and, (5 on-site electricity use. The model was applied to a hypothetical pavement project to compare the environmental impacts of flexible and rigid pavement types during construction. The resulting model can be used for evaluation of environmental impacts, as well as for designing and planning highway pavement construction.

  4. The Influence of Trust on Project Management Practice within the Construction Industry

    Directory of Open Access Journals (Sweden)

    Scott Strahorn

    2017-03-01

    Full Text Available Given that any construction project is inherently a human endeavour, it follows that issues of trust are significant in terms of the stakeholder interactions that deliver eventual project outcomes.  Previous research indicates that the relational basis upon which projects are undertaken are intended to influence the likelihood of trusting relationships between stakeholders.  Thus, experiences of trust in a construction project environment are likely to be influenced by the contextual specifics of respective transactional and relational contracting (RC procurement mechanisms, given the divergent theoretical principles upon which they are founded.  The influence of trust has therefore been examined through the lived experiences of construction practitioners.  A phenomenological interview study consisting of thirty-five (35 participants was conducted with sensitivity to the procurement of experiences being recounted. Issues of trust were shown to be integral to stakeholder experiences in both procurement environments, with the benefits of trust acknowledged in many instances.  However, little understanding was evident regarding methods for building and maintaining trust, nor for repairing trust when problems arose. Importantly, despite the differing principles that underpin transactional and relational procurement, and particularly the contention that relational procurement would increase trust between trading partners, this was not evident; with individual personalities and appropriate risk apportionment shown to be greater influences upon the likelihood of trusting relationships.  It is reasonable to conjecture that relational contracts actually diminish the need for trust, given that the objective is to reduce uncertainty through formulaic approaches to risk distribution and reward; the absence of risk negates the need for trust.  Ultimately, the potential to deliver improved project outcomes as a result of proactive approaches to

  5. Environmental Testing Philosophy for a Sandia National Laboratories' Small Satellite Project - A Retrospective

    Energy Technology Data Exchange (ETDEWEB)

    CAP,JEROME S.

    2000-08-24

    Sandia has recently completed the flight certification test series for the Multi-Spectral Thermal Imaging satellite (MTI), which is a small satellite for which Sandia was the system integrator. A paper was presented at the 16th Aerospace Testing Seminar discussing plans for performing the structural dynamics certification program for that satellite. The testing philosophy was originally based on a combination of system level vibroacoustic tests and component level shock and vibration tests. However, the plans evolved to include computational analyses using both Finite Element Analysis and Statistical Energy Analysis techniques. This paper outlines the final certification process and discuss lessons learned including both things that went well and things that should/could have been done differently.

  6. Risk Level Assessment in Construction Projects Using the Schedule Performance Index

    Directory of Open Access Journals (Sweden)

    Roberto Barbosa dos Santos

    2016-01-01

    Full Text Available Construction projects are risky in both physical implementation and management. The characteristics of the risk reinforce the necessity of efficient management to increase the chances of success without commitment to its goals. This study explores the correlation of delay and the schedule performance index (SPI to evaluate the risk of a construction project completed with time overruns. The hypothesis that the SPI of projects with a delay is distinct from those projects without a delay is assumed. A database with 19 elements was used to test this hypothesis and to calculate limit values to the SPI. Therefore, the risk of delay will be small when the observed SPI is greater than the superior limit and large when the SPI is below the inferior limit. The simplicity involved in the calculation of these values showed an advantage in comparison with other methods of risk evaluation. Another strong point observed is that any company can determine the value of risk by considering its own history and support decisions like doing corrective actions.

  7. Applying Interpretive Structural Modeling to Cost Overruns in Construction Projects in the Sultanate of Oman

    Directory of Open Access Journals (Sweden)

    K. Alzebdeh

    2015-06-01

    Full Text Available Cost overruns in construction projects are a problem faced by project managers, engineers, and clients throughout the Middle East.  Globally, several studies in the literature have focused on identifying the causes of these overruns and used statistical methods to rank them according to their impacts. None of these studies have considered the interactions among these factors. This paper examines interpretive structural modelling (ISM as a viable technique for modelling complex interactions among factors responsible for cost overruns in construction projects in the Sultanate of Oman. In particular, thirteen interrelated factors associated with cost overruns were identified, along with their contextual interrelationships. Application of ISM leads to organizing these factors in a hierarchical structure which effectively demonstrates their interactions in a simple way. Four factors were found to be at the root of cost overruns: instability of the US dollar, changes in governmental regulations, faulty cost estimation, and poor coordination among projects’ parties. Taking appropriate actions to minimize the influence of these factors can ultimately lead to better control of future project costs. Thisstudy is of value to managers and decision makers because it provides a powerful yet very easy to apply approach for investigating the problem of cost overruns and other similar issues.

  8. Comparing Performance of Government and Private Clients in Construction Projects: Contractors’ Perspective

    Directory of Open Access Journals (Sweden)

    Jati Utomo Dwi Hatmoko

    2016-09-01

    Full Text Available By nature, government and private projects have different characteristics, which influence client performance. This research aims to compare performance of government and private clients in construction projects as perceived by contractors. Six client performance indicators were used, i.e. understanding of project requirements, financial, decision making, management skills, supports for contractor, and client’s attitude. Data were collected through questionnaire surveys filled in by 117 respondents. The results show that there is a significant difference between both types of client performance. Three variables related to financial indicators, i.e. timely payment, owner value estimate, and payment approval, rank in the bottom three of the government client performance, but in contrast rank in the top three of the private ones. These results suggest that the government clients’ performance is perceived inferior to the private ones. Establishing a clients’ forum for sharing knowledge and best practices would be a strategic solution to enhance clients’ capacities.

  9. An expert system to manage dispute resolutions in construction projects in Egypt

    Directory of Open Access Journals (Sweden)

    A.A. Elziny

    2016-03-01

    Full Text Available This study attempts to shed a great deal of light on the problem of construction disputes in the Egyptian projects. This paper presents a comprehensive review of the available literature on analysis of disputes. The objective of this paper was to provide an expert system can evaluate the overall dispute settlement procedures at company’s projects. A questionnaire has been used to study dispute sources and resolution methods. Four case study applications have been provided to check the validity of the proposed system. Results confirmed that the most important source of disputes was contract management 74.04%, the second was contract documents 71.49%, the third was financial issues 67.80%, the fourth was project related issues 63.92%, and the lowest one was other sources (such as force majeure 61.58%. Finally, the expert program facilitates dispute resolution by using alternative dispute resolution methods instead of going direct to arbitration or litigation.

  10. Data Flow in Relation to Life-Cycle Costing of Construction Projects in the Czech Republic

    Science.gov (United States)

    Biolek, Vojtěch; Hanák, Tomáš; Marović, Ivan

    2017-10-01

    Life-cycle costing is an important part of every construction project, as it makes it possible to take into consideration future costs relating to the operation and demolition phase of a built structure. In this way, investors can optimize the project design to minimize the total project costs. Even though there have already been some attempts to implement BIM software in the Czech Republic, the current state of affairs does not support automated data flow between the bill of costs and applications that support building facility management. The main aim of this study is to critically evaluate the current situation and outline a future framework that should allow for the use of the data contained in the bill of costs to manage building operating costs.

  11. Structuring Requirements in a Multi-Project Environment in the Construction Industry

    DEFF Research Database (Denmark)

    Wörösch, Michael

    2012-01-01

    Being in control of requirements in building projects is vital, since it helps securing the often small profit margins and the reputation of the responsible company. Hence this research aims to introduce requirements management to the construction industry. By means of case study and action...... in this industry, yet, success is here defined as an accomplished and accepted implementation of requirements management processes that are used by the relevant project members in their daily work and where the benefits of implementing requirements management outweighs the cost of invested resources. Furthermore...... it is argued that when running technology development, product development, product platform development, and a portfolio of building projects at the same time the use of requirements management is advantageous and an intelligent way of structuring requirements is needed. This article also demonstrates...

  12. Tazimina hydroelectric project, Iliamna, Alaska. Final technical and construction cost report

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1998-08-01

    The Iliamna-Newhalen-Nondalton Electric Cooperative (INNEC) provides electrical power to three communities of the same names. These communities are located near the north shore of Iliamna Lake in south-central Alaska approximately 175 miles southwest of Anchorage. A hydroelectric project was constructed for these communities, starting in the spring of 1996 and ending in the spring of 1998. The project site is on the Tazimina River about 12 miles northeast of Iliamna Lake. The taximina River flows west from the Aleutian Range. The project site is at Tazimina Falls about 9 miles upstream of the confluence of the Tazimina River and the Newhalen River. The project has an installed capacity of 824 kilowatts (kW) and is expandable to 1.5 megawatts (MW). The project is run-of-the-river (no storage) and uses the approximately 100 feet of natural head provided by the falls. The project features include a channel control sill, intake structure, penstock, underground powerhouse, tailrace, surface control building, buried transmission line and communication cable, and access road.

  13. Bayesian-network-based safety risk assessment for steel construction projects.

    Science.gov (United States)

    Leu, Sou-Sen; Chang, Ching-Miao

    2013-05-01

    There are four primary accident types at steel building construction (SC) projects: falls (tumbles), object falls, object collapse, and electrocution. Several systematic safety risk assessment approaches, such as fault tree analysis (FTA) and failure mode and effect criticality analysis (FMECA), have been used to evaluate safety risks at SC projects. However, these traditional methods ineffectively address dependencies among safety factors at various levels that fail to provide early warnings to prevent occupational accidents. To overcome the limitations of traditional approaches, this study addresses the development of a safety risk-assessment model for SC projects by establishing the Bayesian networks (BN) based on fault tree (FT) transformation. The BN-based safety risk-assessment model was validated against the safety inspection records of six SC building projects and nine projects in which site accidents occurred. The ranks of posterior probabilities from the BN model were highly consistent with the accidents that occurred at each project site. The model accurately provides site safety-management abilities by calculating the probabilities of safety risks and further analyzing the causes of accidents based on their relationships in BNs. In practice, based on the analysis of accident risks and significant safety factors, proper preventive safety management strategies can be established to reduce the occurrence of accidents on SC sites. Copyright © 2013 Elsevier Ltd. All rights reserved.

  14. Methodological approaches to assessing the innovativeness level of investment and construction projects

    Directory of Open Access Journals (Sweden)

    Dolzhenko Yuliya Aleksandrovna

    Full Text Available The article presents the results of the analysis of the existing approaches to innovations evaluation in international and Russian practice. The authors examine the nature of the concept of “innovation”, especially innovation projects, methodological tools to measure various objects’ innovativeness level as well as innovative project economic efficiency assessing methods. It should be noted that at the legislative level up to date in the process of formation and implementation of capital construction projects there are no eligible requirements and assistance from public authorities to the developer for creating innovative products, providing the appropriate level of services. And if the financial indicators of the project are more or less clear, the level of innovativeness of them is much more complicated, although the requirements on the innovativeness of the projects are included in the Strategy of innovative development of Russia. The analysis shows that in Russian and international practice there are many approaches to assessing innovations, but they cannot be considered universal and they are applied differentially depending on the goals and tasks of applying the results of scientific achievements in the form of intellectual property to improve the efficiency and competitiveness of industries, products, services. In this case individual, specific evaluation method is selected and implemented basing on taking into account all the legal, economic, technical and other aspects. As a result, the author concluded that the innovativeness level rating requires development, which is in its analytical capabilities to provide flexible management tool, which can be applied at all the stages of the investment and construction project life cycle.

  15. Manufacturing considerations of the Phase 3D Satellite

    Science.gov (United States)

    Crookston, Mark; Harward, Kelly A.

    1992-08-01

    The Amsat Phase 3D (P3D) Satellite is now in the construction phase at Weber State University's undergraduate manufacturing and mechanical engineering technology program. The first year of a three-year manufacturing project has brought the students many interesting and challenging tasks. This paper discusses some of the unique manufacturing aspects of the P3D satellite by focusing on a satellite component fabricated from honeycomb panel and an assembly fixture designed and built by the students.

  16. Waste-efficient materials procurement for construction projects: A structural equation modelling of critical success factors.

    Science.gov (United States)

    Ajayi, Saheed O; Oyedele, Lukumon O

    2018-02-06

    Albeit the understanding that construction waste is caused by activities ranging from all stages of project delivery process, research efforts have been concentrated on design and construction stages, while the possibility of reducing waste through materials procurement process is widely neglected. This study aims at exploring and confirming strategies for achieving waste-efficient materials procurement in construction activities. The study employs sequential exploratory mixed method approach as its methodological framework, using focus group discussion, statistical analysis and structural equation modelling. The study suggests that for materials procurement to enhance waste minimisation in construction projects, the procurement process would be characterised by four features. These include suppliers' commitment to low waste measures, low waste purchase management, effective materials delivery management and waste-efficient Bill of Quantity, all of which have significant impacts on waste minimisation. This implies that commitment of materials suppliers to such measures as take back scheme and flexibility in supplying small materials quantity, among others, are expected of materials procurement. While low waste purchase management stipulates the need for such measures as reduced packaging and consideration of pre-assembled/pre-cut materials, efficient delivery management entails effective delivery and storage system as well as adequate protection of materials during the delivery process, among others. Waste-efficient specification and bill of quantity, on the other hand, requires accurate materials take-off and ordering of materials based on accurately prepared design documents and bill of quantity. Findings of this study could assist in understanding a set of measures that should be taken during materials procurement process, thereby corroborating waste management practices at other stages of project delivery process. Copyright © 2018. Published by Elsevier Ltd.

  17. Results of expert response when forming an exhaustive list of potential risks of constructions projects using energy efficient technologies

    Directory of Open Access Journals (Sweden)

    Ryzhkova Anastasiya Igorevna

    2016-10-01

    Full Text Available The author deals with the most widely used methods of risk events identification. The expert response method is most applicable for construction projects using energy efficient technologies. The article presents the results of an opinion poll of the professional expert community using expert response method, which is aimed to identify the most likely potential “pure” risk of construction projects with energy-efficient technologies in use. 74 experts representing different levels of the construction process were polled: customers and directors of construction companies, project managers, risk managers, advisors. The answers were collected during private talks and also using a special website Survey Monkey. Experts from different countries took part: Russia, Great Britain, Austria, Luxemburg, Switzerland and Norway. Also the article presents the expert evaluation of the “effect” of risk implementation on the cost of a project, implementation time, the product quality, the environment and safety on the construction site.

  18. Revisiting a Hydrological Analysis Framework with International Satellite Land Surface Climatology Project Initiative 2 Rainfall, Net Radiation, and Runoff Fields

    Science.gov (United States)

    Koster, Randal D.; Fekete, Balazs M.; Huffman, George J.; Stackhouse, Paul W.

    2006-01-01

    The International Satellite Land Surface Climatology Project Initiative 2 (ISLSCP-2) data set provides the data needed to characterize the surface water budget across much of the globe in terms of energy availability (net radiation) and water availability (precipitation) controls. The data, on average, are shown to be consistent with Budyko s decades-old framework, thereby demonstrating the continuing relevance of Budyko s semiempirical relationships. This consistency, however, appears only when a small subset of the data with hydrologically suspicious behavior is removed from the analysis. In general, the precipitation, net radiation, and runoff data also appear consistent in their interannual variability and in the phasing of their seasonal cycles.

  19. Perspective on the personal and professional needs of the project leader in construction industry in Libya: a case study

    Directory of Open Access Journals (Sweden)

    Abdul Hamid kadir Pakir

    2010-05-01

    Full Text Available The quality of leadership is one of the most important factors in determining the success and survival of groups and organizations. The purpose of this paper is to examine the leadership needs of the project manger in the Libyan construction companies. The objective was identified the most important and crucial personal and professional needs of the project manager. This study attempted to identify the needs of the project managers in the construction industry in Libya. The finding has shown that all managers surveyed basically agreed that adherence to law/legality, specific, concise and rational, followed by intuitive and open minded are ranked as the most crucial personal needs that should be acquired to become an effective project manager in the construction industry. On the other hand, attention to details, project focus, adherence to construction industries/ professional codes, time concious / constraints, problem solving were ranked as the crucial professional needs that required the respondents.

  20. Iodine Satellite

    Science.gov (United States)

    Dankanich, John; Kamhawi, Hani; Szabo, James

    2015-01-01

    This project is a collaborative effort to mature an iodine propulsion system while reducing risk and increasing fidelity of a technology demonstration mission concept. 1 The FY 2014 tasks include investments leveraged throughout NASA, from multiple mission directorates, as a partnership with NASA Glenn Research Center (GRC), a NASA Marshall Space Flight Center (MSFC) Technology Investment Project, and an Air Force partnership. Propulsion technology is often a critical enabling technology for space missions. NASA is investing in technologies to enable high value missions with very small and low-cost spacecraft, even CubeSats. However, these small spacecraft currently lack any appreciable propulsion capability. CubeSats are typically deployed and drift without any ability to transfer to higher value orbits, perform orbit maintenance, or deorbit. However, the iodine Hall system can allow the spacecraft to transfer into a higher value science orbit. The iodine satellite (iSAT) will be able to achieve a (Delta)V of >500 m/s with 1,300 s. The iSAT spacecraft, illustrated in figure 1, is currently a 12U CubeSat. The spacecraft chassis will be constructed from aluminum with a finish to prevent iodine-driven corrosion. The iSAT spacecraft includes full three-axis control using wheels, magnetic torque rods, inertial management unit, and a suite of sensors and optics. The spacecraft will leverage heat generated by spacecraft components and radiators for a passive thermal control system.

  1. The Muon Portal Project: Design and construction of a scanning portal based on muon tomography

    Science.gov (United States)

    Antonuccio, V.; Bandieramonte, M.; Becciani, U.; Bonanno, D. L.; Bonanno, G.; Bongiovanni, D.; Fallica, P. G.; Garozzo, S.; Grillo, A.; La Rocca, P.; Leonora, E.; Longhitano, F.; Lo Presti, D.; Marano, D.; Parasole, O.; Pugliatti, C.; Randazzo, N.; Riggi, F.; Riggi, S.; Romeo, G.; Romeo, M.; Russo, G. V.; Santagati, G.; Timpanaro, M. C.; Valvo, G.

    2017-02-01

    Cosmic ray tomography is a technique which exploits the multiple Coulomb scattering of highly penetrating cosmic ray-produced muons to perform non-destructive inspection of high-Z materials without the use of artificial radiation. A muon tomography detection system can be used as a portal monitor at border crossing points for detecting illegal targeted objects. The Muon Portal Project is a joint initiative between Italian research and industrial partners, aimed at the construction of a real size detector prototype (6×3×7 m3) for the inspection of cargo containers by the muon scattering technique. The detector consists of four XY tracking planes, two placed above and two below the container to be inspected. After a research and development phase, which led to the choice and test of the individual components, the construction and installation of the detection modules is almost completed. In this paper the present status of the Project is reported, focusing on the design and construction phase, as well as on the preliminary results obtained with the first detection planes.

  2. Aspects of transport transit hubs construction management in coordination with object lifecycle projecting

    Directory of Open Access Journals (Sweden)

    Danilina Nina

    2016-01-01

    Full Text Available The article involves the results of the research in the field of the initial phase in the project of the object lifecycle for urban public transportation transit hubs (TTH. The main purpose is to provide definition and justification of area parameters for spatial solution of a hub with consideration of its construction viability and sustainability of urban development. In the article there are presented the results of analytical studies of the data available in the approved Planning documentation for TTH objects listed in the short-term program of TTH construction in Moscow. The point of interest was to obtain correlations between the total area of TTH area, areas of commercial and technological use and passenger traffic value in order to define territory balance providing request from city authorities and private investors for construction project management. Also, there is presented the theoretical model as an evaluation guide that allows evaluating not only the demand of a city and its population in the development of TTH territory but also and especially the requirements for placing commercial areas inside TTH.

  3. submitter The Muon Portal Project: Design and construction of a scanning portal based on muon tomography

    CERN Document Server

    Antonuccio, V; Becciani, U; Bonanno, D L; Bonanno, G; Bongiovanni, D; Fallica, P G; Garozzo, S; Grillo, A; La Rocca, P; Leonora, E; Longhitano, F; Lo Presti, D; Marano, D; Parasole, O; Pugliatti, C; Randazzo, N; Riggi, F; Riggi, S; Romeo, G; Romeo, M; Russo, G V; Santagati, G; Timpanaro, M C; Valvo, G

    2016-01-01

    Cosmic ray tomography is a technique which exploits the multiple Coulomb scattering of highly penetrating cosmic ray-produced muons to perform non-destructive inspection of high-Z materials without the use of artificial radiation. A muon tomography detection system can be used as a portal monitor at border crossing points for detecting illegal targeted objects. The Muon Portal Project is a joint initiative between Italian research and industrial partners, aimed at the construction of a real size detector prototype $(6×3×7 m^3)$ for the inspection of cargo containers by the muon scattering technique. The detector consists of four XY tracking planes, two placed above and two below the container to be inspected. After a research and development phase, which led to the choice and test of the individual components, the construction and installation of the detection modules is almost completed. In this paper the present status of the Project is reported, focusing on the design and construction phase, as well as o...

  4. Quality of road construction projects in Sweden between 1990 and 2010

    Directory of Open Access Journals (Sweden)

    Abukar Warsame

    2014-03-01

    Full Text Available It has been reported that productivity developments in construction are slow compared to other sectors. Measuring productivity is however not easy and it might have been underestimated due to deficiencies in the index that is used when the value added in current prices is converted into value added at constant prices. A central problem when deflating nominal prices is that the deflation should only take away price changes for identical products and not price changes related to quality changes and improvements necessitated by new environmental conditions and legislation as well as demand for higher safety. The aim of this project is to help fill this gap by looking at the quality changes over time in road construction. A combination of comparative studies and interviews with practitioners from public and private sectors that are involved in road construction projects were conducted. It was found that there had been both direct quality changes in the roads, primarily to improve safety on the roads and for noise protection, and indirect quality changes related to building in more difficult circumstances because of giving higher weight to other social objectives, especially environmental objectives. As these quality increases are not taken into account when productivity is measured, productivity improvements could be underestimated by around 1% per year.

  5. Tazimina Hydroelectric Project, Iliamna, Alaska Final Technical and Construction Cost Report

    Energy Technology Data Exchange (ETDEWEB)

    HDR Alaska, Inc.

    1998-11-01

    The Iliamna-Newhalen-Nondalton Electric Cooperative (INNEC) provides electrical power to three communities of the same names. These communities are located near the north shore of Iliamna Lake in south-central Alaska approximately 175 miles southwest of Anchorage. These communities have a combined population of approximately 600 residents. There is no direct road connection from these villages to larger population centers. Electric power has been generated by INNEC since 1983 using diesel generators located in the community of Newhalen. Fuel for these generators was transported up the Kvichak River, an important salmon river, and across Iliamna Lake. In dry years the river is low and fuel is flown into Iliamna and then trucked five miles into Newhalen. The cost, difficult logistics and potential spill hazard of this fuel was a primary reason for development of hydroelectric power in this area. A hydroelectric project was constructed for these communities, starting in the spring of 1996 and ending in the spring of 1998. The project site is at Tazimina Falls about 9 miles upstream of the confluence of the Tazimina River and the Newhalen River. The project has an installed capacity of 824 kilowatts (kW) and is expandable to 1.5 megawatts (MW). The project is run-of-the-river (no storage) and uses the approximately 100 feet of natural head provided by the falls. The project features include a channel control sill, intake structure, penstock, underground powerhouse, tailrace, surface control building, buried transmission line and communication cable, and access road.

  6. Project-Based Market Competition and Policy Implications for Sustainable Developments in Building and Construction Sectors

    Directory of Open Access Journals (Sweden)

    Min-Ren Yan

    2015-11-01

    Full Text Available Building and construction sectors are significant contributors to the global economy, but their energy consumption necessitates greater commitment to sustainable developments. There is therefore a growing demand for green innovation in the form of cleaner production and policies to meet the modern requirements of sustainability. However, the nature in which public work is undertaken is in an environment of project-based market competition, whereby contractors routinely bid for contracts under specific project awarding systems, and variations are accompanied with the unique scope of individual projects before the final goods or services are delivered. A comprehensive understanding of the characteristics and contractors’ behavior in systems could help to identify the leverage points of policies. This paper proposes a system dynamics model, with quantitative analysis and simulations, to demonstrate the problems of a system with different project awarding systems and ineffective market performance. The framework of market efficiency and performance measures has been proposed to evaluate the project-based competition mechanism. Managerial policy implications for market efficiency and sustainable developments can thus be systematically discussed and compared through iterative computer simulations and scenario analysis.

  7. Safety culture assessment and its relationship with the accidents in a dam construction project

    Directory of Open Access Journals (Sweden)

    A. Maleki

    2015-01-01

    Full Text Available Introduction: Safety culture is considered as the core of an organization’s safety management system. Safety culture is an organization ability to achieve higher standards of safety. The aim of this study was to investigate safety culture and its influencing factors and relation to the accident in a dam construction project.  .Material and Method: This cross-sectional study was conducted among 130 workers at a dam construction project. A standardized questionnaire included 59 questions was used to determine the level of safety culture. The accidents occurred in the project during the year were collected based on demographic characteristics. The collected data were analyzed using SPSS version 19.  .Result: The mean age of the subjects, their work experience and score of safety culture were 35.05, 7.5 Years and 183.2, respectively. Twenty seven accidents were recorded during the year in project. The most common cause of the accidents was indiscretions (33.3%. There was a statistically significant correlation between safety culture to occurred accidents and history of accident (P<0.05. The percentage of a positive safety culture of workers with an experience of accident (71.8% was more than that of those with no experience of accident (45.1%. There was not a statistically significant correlation between safety culture and age, work experience, education, and marital status.  .Conclusion: It seems that safety culture on the project is influenced by the experience of accident and also it was strongly significant with the occurred accidents. Consequently, in order to create a positive safety culture in the workplace many factors including safety education program, work experience and accidents analysis should be considered.

  8. Estimating NOA Health Risks from Selected Construction Activities at the Calaveras Dam Replacement Project (CDRP)

    Science.gov (United States)

    Hernandez, D. W.

    2012-12-01

    The CDRP is a major construction project involving up to 400 workers using heavy earth moving equipment, blasting, drilling, rock crushing, and other techniques designed to move 7 million yards of earth. Much of this material is composed of serpentinite, blueschist, and other rocks that contain chrysotile, crocidolite, actinolite, tremolite, and Libby-class amphiboles. To date, over 1,000 personal, work area, and emission inventory related samples have been collected and analyzed by NIOSH 7400, NIOSH 7402, and CARB-AHERA methodology. Data indicate that various CDRP construction activities have the potential to generate significant mineral fibers and structures that could represent elevated on site and off site health risks. This presentation will review the Contractors air monitoring program for this major project, followed by a discussion of predictive methods to evaluate potential onsite and offsite risks. Ultimately, the data are used for planning control strategies designed to achieve a Project Action Level of 0.01 f/cc (one tenth the Cal/OSHA PEL) and risk-based offsite target levels.

  9. Linking satellite ICT application businesses with regional innovation centers and investors: The EC “INVESaT” project

    Science.gov (United States)

    Ghiron, Florence; Kreisel, Joerg

    2009-09-01

    In the sector of information and communication technologies (ICT), whether in the USA, Japan, or Europe, innovative services are already in use, based on large-scale space-based infrastructure investments. Such systems are e.g. earth observation, telecommunication, and navigation, timing and positioning satellites. In combination with the advent of powerful handheld terminals and the demand for ubiquitous services, it is expected that info-mobility applications will reveal new sources of business in the years ahead, using in particular the Earth observation and future GALILEO systems to position any feature or user anywhere in the world within a few meter accuracy. Hence, satellite-based capabilities provide new and unique opportunities for economic stimulation and development. Many incubators and innovation centers in Europe have already grasped this growth potential. Yet, for many European players business growth appears below expectations compared to developments in the USA following the launch of GPS (Global Positioning System). Europe still has to overcome intrinsic barriers to seize these new business opportunities faster and with more visible economic impact by leveraging on SMEs and regional innovation centers to expand the commercial utilization of satellite capabilities and mobilization of appropriate financial resources. The paper elaborates on the INVESat project (funded by the EuropeInnova—European Commission), which aims at bridging the gap between Innovative enterprises and financial In VEstors in the emerging markets of SaTellite applications. The critical success factors required to stimulate and support more efficiently investments in this bread of innovative services will also be highlighted.

  10. Use of Satellite SAR Data for Seismic Risk Management: Results from the Pre-Operational ASI-SIGRIS Project

    Science.gov (United States)

    Salvi, Stefano; Vignoli, Stefano; Zoffoli, Simona; Bosi, Vittorio

    2010-12-01

    The scope of the SIGRIS pilot project is the development of an infrastructure to provide value-added information services for the seismic risk management, assuring a close integration between ground-based and satellite Earth Observation data. The project is presently in the demonstration phase, and various information products are constantly generated and disseminated to the main user, the Italian Civil Protection Department. We show some examples of the products generated during the Crisis management of the 2009 L'Aquila earthquake in Central Italy. We also show an example of products generated for the Knowledge and Prevention service in support of the seismic hazard assessment in the area of the Straits of Messina.

  11. Environmental assessment for the A-01 outfall constructed wetlands project at the Savannah River Site

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1998-10-01

    The Department of Energy (DOE) prepared this environmental assessment (EA) to analyze the potential environmental impacts associated with the proposed A-01 outfall constructed wetlands project at the Savannah River site (SRS), located near aiken, South Carolina. The proposed action would include the construction and operation of an artificial wetland to treat effluent from the A-01 outfall located in A Area at SRS. The proposed action would reduce the outfall effluent concentrations in order to meet future outfall limits before these go into effect on October 1, 1999. This document was prepared in compliance with the National Environmental Policy Act (NEPA) of 1969, as amended; the requirements of the Council on Environmental Quality Regulations for Implementing NEPA (40 CFR Parts 1500--1508); and the DOE Regulations for Implementing NEPA (10 CFR Part 1021).

  12. Technical data for concentrated solar power plants in operation, under construction and in project

    Directory of Open Access Journals (Sweden)

    Ugo Pelay

    2017-08-01

    Full Text Available This article presents technical data for concentrated solar power (CSP plants in operation, under construction and in project all over the world in the form of tables. These tables provide information about plants (e.g., name of the CSP plant, country of construction, owner of the plant, aim of the plant and their technical characteristics (e.g., CSP technology, solar power, area of the plant, presence and type of hybridization system, electricity cost, presence and type of TES, power cycle fluid, heat transfer fluid, operating temperature, operating pressure, type of turbine, type and duration of storage, etc.. Further interpretation of the data and discussions on the current state-of-the-art and future trends of CSP can be found in the associated research article (Pelay et al., 2017 [1].

  13. Technical data for concentrated solar power plants in operation, under construction and in project.

    Science.gov (United States)

    Pelay, Ugo; Luo, Lingai; Fan, Yilin; Stitou, Driss; Rood, Mark

    2017-08-01

    This article presents technical data for concentrated solar power (CSP) plants in operation, under construction and in project all over the world in the form of tables. These tables provide information about plants (e.g., name of the CSP plant, country of construction, owner of the plant, aim of the plant) and their technical characteristics (e.g., CSP technology, solar power, area of the plant, presence and type of hybridization system, electricity cost, presence and type of TES, power cycle fluid, heat transfer fluid, operating temperature, operating pressure, type of turbine, type and duration of storage, etc.). Further interpretation of the data and discussions on the current state-of-the-art and future trends of CSP can be found in the associated research article (Pelay et al., 2017) [1].

  14. People Centered Innovation: Enabling Lean Integrated Project Delivery and Disrupting the Construction Industry for a More Sustainable Future

    Directory of Open Access Journals (Sweden)

    William Paolillo

    2016-01-01

    Full Text Available People-centered innovation is a paradigm shift in the construction industry. It is derived from the supposition that people not methods, schedules, or budgets deliver projects. Our data suggest that a multilevel, multidisciplinary project team through shared vision, values, and a common vernacular defines, designs, and delivers more successful projects than traditional methods. These projects meet the needs of shareholders, the community, stakeholders, and the planet. We employ the concepts of emotional intelligence and agency theory to explain an integrated project delivery (IPD construction project using lean tactics that not only delivered, but also exceeded expectations resulting in a six-month schedule acceleration and $60M savings over the original estimated cost of the project calculated assuming traditional project delivery methods. The safety rating for this project was 50% better than the national average and the expected improvement in operating margin for the new building is 33% greater. This paper introduces the notion of people-centered innovation to an industry that has struggled to adapt and show positive results over recent decades. Our case study describes the significance of people-centered innovation in construction project delivery. We discuss the implications for the construction industry going forward.

  15. Lime Stabilization of Fine-Grained Greenlandic Sediments in Relation to Construction Projects

    DEFF Research Database (Denmark)

    Jørgensen, Anders Stuhr; Ingeman-Nielsen, Thomas; Nielsen, Hans Rasmus

    2010-01-01

    Thick deposits of fine-grained marine sediments exist in large areas of western Greenland. Many places these sediments are located above sea-level, and now complicate construction projects in urban areas. The mineralogy of the sediments is very different from that of European sediments, mainly due...... to the cold climate, and it is therefore of great interest to study possible methods to improve the stability of the fine-grained sediments. This presentation will include results of laboratory studies of lime stabilization on a clay soil from Kangerlussuaq, western Greenland. The result includes tests...

  16. Planning of road construction projects with a view to stimulating economic growth and development

    Directory of Open Access Journals (Sweden)

    Wessel Pienaar

    2014-08-01

    Full Text Available This paper provides an outline of how the economic evaluation and selection of road construction projects can be complemented by social evaluation with a view to achieving a more equitable welfare distribution within a developing country. The article commences by elaborating on the general economic benefits that can arise from investment in economically justified road infrastructure. The different classes of non-road-user beneficiaries are idenified and discussed. The operational characteristics of road transport that are conducive to the stimulation of economic activity are identified and described. The present inequality of income distribution in South Africa is dealt with briefly, followed by a discussion and analysis on the use of equity weights in project evaluation to help bring about a more equitable welfare distribution.

  17. A fuzzy neural network to estimate at completion costs of construction projects

    Directory of Open Access Journals (Sweden)

    Morteza Bagherpour

    2012-04-01

    Full Text Available In construction cost management system, normally earned value management (EVM is applied as an efficient control approach in both status detection and estimation at completion (EAC cost forecasting. The traditional approaches in EAC predictions normally extend the current situation of a project to the future by employing pervious performance factor. The proposed approach of this paper considers both qualitative and quantitative factors affecting the EAC prediction. The proposed approach of this research not only estimates the completion of the project, but also it can generate accurate forecast for the entire future periods using a fuzzy neural network model. The model is also implemented for a real-world case study and yields encouraging preliminary results.

  18. A CONCEPTUAL TOOL FOR ASSESSING CLIENT PERFORMANCE IN THE CONSTRUCTION PROJECT COALITION

    Directory of Open Access Journals (Sweden)

    Gary D. Holt

    2002-01-01

    Full Text Available Due to the significant impact of client performance on overall project performance and the interdependence of participant%5C%27s performance in the construction project coalition %28i.e. clients%2C designers and constructors%29%2C there is a need to establish client performance measures. Based on data collected from in-depth interviews with nineteen UK architects and nine UK contractors%2C a generic tool for the on-going formal assessment of client performance is presented. It was found that this approach to performance assessment %28i.e. from the view point of other%2C non-client coalition participants%29 should lead to improved project relationships. Data analysis showed that in addition to %5C%27harder%5C%27 measures such as understanding of project requirements and finance%2C other%2C %5C%27softer%5C%27 measures of client performance %28e.g. attitude%29 were worthy of consideration since they determine the quality of participant relationships. It is recommended that the tool be used to promote more effective client performance and thus enhance coalition relationships%2C enabling continuous improvement. The ultimate aim is to develop similar tools for the assessment of all coalition participants based on a culture of openness and trust. Abstract in Bahasa Indonesia : assessment+tool%2C+coalition+participants%2C+client+performance%2C+perceptions%2C+performance+measures%2C+satisfaction.

  19. Simulation-Based Fuzzy Logic Approach to Assessing the Effect of Project Quality Management on Construction Performance

    Directory of Open Access Journals (Sweden)

    Gilberto A. Corona-Suárez

    2014-01-01

    Full Text Available This paper reports the development of an approach to integrate the appropriate modeling techniques for estimating the effect of project quality management (PQM on construction performance. This modeling approach features a causal structure that depicts the interaction among the PQM factors affecting quality performance in a given construction operation. In addition, it makes use of fuzzy sets and fuzzy logic in order to incorporate the subjectivity and uncertainty implicit in the performance assessment of these PQM factors to discrete-event simulation models. The outcome is a simulation approach that allows experimenting with different performance levels of the PQM practices implemented in a construction project and obtaining the corresponding productivity estimates of the construction operations. These estimates are intended to facilitate the decision making regarding the improvement of a PQM system implemented in a construction project. A case study is used to demonstrate the usefulness of the proposed simulation approach for evaluating diverse performance improvement alternatives for a PQM system.

  20. Critical chain construction with multi-resource constraints based on portfolio technology in South-to-North Water Diversion Project

    Directory of Open Access Journals (Sweden)

    Jing-chun Feng

    2011-06-01

    Full Text Available Recently, the critical chain study has become a hot issue in the project management research field. The construction of the critical chain with multi-resource constraints is a new research subject. According to the system analysis theory and project portfolio theory, this paper discusses the creation of project portfolios based on the similarity principle and gives the definition of priority in multi-resource allocation based on quantitative analysis. A model with multi-resource constraints, which can be applied to the critical chain construction of the A-bid section in the South-to-North Water Diversion Project, was proposed. Contrast analysis with the comprehensive treatment construction method and aggressive treatment construction method was carried out. This paper also makes suggestions for further research directions and subjects, which will be useful in improving the theories in relevant research fields.

  1. Development of Guidelines for Reduction of Temperature Differential Damage (TDD) for Hot Mix Asphalt Pavement Projects in Connecticut - Construction Report

    Science.gov (United States)

    1999-11-01

    Connecticut Department of Transportation personnel used an infrared camera to observe thermal segregation of hot mix asphalt during pavement construction. Several sites were selected for study from ongoing paving projects. During paving operations, t...

  2. Elaboration of strategic plans for territory development based on the implementation of investment and construction projects

    Directory of Open Access Journals (Sweden)

    Akimova Elena

    2017-01-01

    Full Text Available In the authors’ opinion, the most important element to form the territory development strategy is the mandatory inclusion of indices of the investment and construction projects which are implemented within the strategy. The principal problem of the existing system of strategic planning in this country is insufficient accounting of investment and construction projects influence on the strategy of regional development. It significantly holds in check the current business activity and, consequently, the long-term effective development of the territory. Currently the solution of issues connected with the effective territory development is ever more challenging; the complex geopolitical and economic situations force the Russian government to look for new drivers of growth and further development by means of the country internal resource. The main pre-requisites of long-term sustainable development of the Russian Federation are: the vast human capital assets, surviving economic, significant territorial and natural resources. However, the tasks of long-term development of the country cannot be solved without the effective system of strategic planning at all levels of administrative-territorial division and clear-cut priorities.

  3. The weaknesses of China's contractors in overseas construction project management: 2 case studies

    Directory of Open Access Journals (Sweden)

    Ph. D. Mo Xuan

    2012-05-01

    Full Text Available The practices of international construction contracting have been prevalent increasingly over the past half a centuru, Altough the contractors of highly developed world have dominated this field, there tends to be more players from newly emerging countries like China. The history of China's contractors performing in the overseas construction markets is divided into 3 major phases, namely the planning economy era, reform and openness perios and the latest nwe millennium. However, the know-how and techniques of modern project management have been widely deployed in China for merely 2 decades. While competing with those veterans in overseas markets, China's contractors still lack adequate advantages as well as experiences, leading to the underperformance or even failures. A 2-dimension framework of overseas project management, comprising the external risk and internal function aspects , is proposed. Based on the analysis of 2 recent cases in Saudi Arabia an Poland respectively, it's foung that the low cost strategy management in risk, commerce, cost, human resources, etc. are their fatal weaknesses.

  4. Potential difficulties in applying the Pay for Safety Scheme (PFSS) in construction projects.

    Science.gov (United States)

    Choi, Tracy N Y; Chan, Daniel W M; Chan, Albert P C

    2012-09-01

    Since 1996, the Government of the Hong Kong Special Administrative Region (HKSAR) has introduced the Pay for Safety Scheme (PFSS) to the public works construction contracts to uplift their safety performance. However, the adoption of PFSS has also encountered some difficulties that merit considerable attention. This paper purports to provide a concise review of the prevailing application of PFSS in Hong Kong in general, and to explore the potential difficulties associated with PFSS in particular. By means of an empirical questionnaire survey geared towards industrial practitioners with extensive direct hands-on PFSS experience, their opinions were solicited, analyzed and compared between the client group and contractor group of respondents. The three most significant difficulties in implementing PFSS were found to be: (1) "Plenty of paperwork required for certifying payment to contractor"; (2) "Complicated contract documents and lengthy assessment process"; and (3) "Over-tight project schedule requiring rush jobs". The output of this research study is particularly essential in assisting the contracting parties to mitigate the avoidable hindrances when embarking on PFSS. It has also generated valuable insights into developing effective recommendations for alleviating the barriers to PFSS success for future construction projects. Copyright © 2011 Elsevier Ltd. All rights reserved.

  5. Project Transfer--Shifts in the Social and Cultural Capital of Further Education Construction Students Involved in Constructing an Artwork

    Science.gov (United States)

    Goulding, Anna

    2009-01-01

    The International Centre for Cultural and Heritage Studies at Newcastle University has been investigating the impact of artists working with young people in cultural sites and schools. This paper focuses on "Transfer" by the artist Wolfgang Weileder; the construction and de-construction of a full-scale replica of Milton Keynes Gallery at…

  6. Wind Energy and Wildlife Pre- and Post-Construction Project at Pantex Plant

    Energy Technology Data Exchange (ETDEWEB)

    Matlack, Raymond S. [Texas A & M Univ., College Station, TX (United States)

    2018-01-03

    From 2009-2017, we conducted pre- and post-construction monitoring of wildlife at the Pantex Plant before and after construction of five wind turbines on the plant in 2014-2015. Pre-construction acoustic monitoring for bats was conducted at five sites on Pantex. Acoustic (here after Anabat) files were downloaded 30 times with Anabat files recorded from 6/21/2010 through 1/17/2014. The resulting data include over 3,000,000 files and we hope to analyze them in the future. We were never successful recording acoustic data after 2014 (post-construction). This is despite numerous attempts to trouble shoot our acoustic monitors. Wind damage to cables going from the body of the monitor to their microphones could not be repaired or replaced while towers were standing. Sampling of breeding birds was accomplished through point counts conducted at sites selected for turbine construction and others selected as control sites. Precipitation varied greatly over the course of the study, from a low of 17.81 cm (7.01 inches) during 2011 to a high of 87.96 cm (34.63 inches) during 2015. The pre-construction portion of the project was characterized by fairly extreme drought starting in 2011. Total precipitation for 2011 and 2012 was just 49.12 cm (19.34 inches), less than 50% of the average for a two-year period. The impact of this drought on nesting grassland birds manifest as low nesting species richness and abundance. In 2011 and 2012, 20 and 17 species were documented during point counts, respectively. Post-construction sampling followed the wet year of 2015 (87.96 cm, 34.63 inches). Species richness of nesting birds in 2016 and 2017 was considerably higher than during the drought, 40 and 37 species, respectively. We suspect changes in resource availability associated with relief from drought starting after 2015 was responsible for the recovery/increase in species detected during the breeding season; less importantly any changes from installation of turbines or changes in surface

  7. 42 CFR 137.350 - Is a Self-Governance Tribe responsible for completing a construction project in accordance with...

    Science.gov (United States)

    2010-10-01

    ... 42 Public Health 1 2010-10-01 2010-10-01 false Is a Self-Governance Tribe responsible for... SERVICE, DEPARTMENT OF HEALTH AND HUMAN SERVICES TRIBAL SELF-GOVERNANCE Construction Roles of Self-Governance Tribe in Establishing and Implementing Construction Project Agreements § 137.350 Is a Self...

  8. 42 CFR 137.351 - Is a Self-Governance Tribe required to submit construction project progress and financial reports...

    Science.gov (United States)

    2010-10-01

    ... 42 Public Health 1 2010-10-01 2010-10-01 false Is a Self-Governance Tribe required to submit..., DEPARTMENT OF HEALTH AND HUMAN SERVICES TRIBAL SELF-GOVERNANCE Construction Roles of Self-Governance Tribe in Establishing and Implementing Construction Project Agreements § 137.351 Is a Self-Governance Tribe required to...

  9. Design and construction of headwater pond tailings facility, Voisey's Bay nickel project, Labrador

    Energy Technology Data Exchange (ETDEWEB)

    Small, C.A. [AMEC Earth and Environmental Ltd., Fredericton, NB (Canada); Stefanuto, D. [Voisey' s Bay Nickel Company, St. John' s, NL (Canada)

    2007-07-01

    The Voisey's Bay mine is located in northern Labrador and operated by the Voisey's Bay Nickel Company. The Headwater Pond tailings facility, located 7 km east of the mine and mill complex, receives discharged tailings, potentially acid generating rock, and water from the mine site. Production at the mine started in the fall of 2005. This paper discussed the design and construction of the Headwater Pond tailings facility which was constructed in 2005 as part of the Voisey's Bay Nickel Project, as well as the method of tailings placement and disposal for potentially acid generating rock from the mine, and the plans for closure of the facility after mining operations cease. The paper discussed the physical environment of the site including: bedrock geology; surficial geology; hydrogeologic setting; permafrost; seismicity; precipitation and evaporation; and watershed. In addition, applicable regulatory requirements, guidelines and design criteria were identified. Next, the paper discussed dam design and configuration including: stability analysis; seepage analysis; flood routing and emergency spillway; and freeboard and rip-rap. It was concluded that the Headwater Pond tailings and waste rock management facility was generally built in accordance with the design and construction plan. The pond will provide safe storage of acid generating tailings and potentially acid generating waste rock for 14 years of mine operation and without limit after closure. 14 figs.

  10. Performance indices of project companies virtual divisions in the construction in CAD conditions

    Directory of Open Access Journals (Sweden)

    Sinenko Sergey

    2017-01-01

    Full Text Available At the present time we consider the construction operations development triggered by the modern technologies development. The electronics, robotics, artificial intelligence, wireless technologies and more became the present-day production attribute. The creation of virtual organizations has become the expected solution of business communities. Following in the footsteps of information boom, in this article we consider the problem of construction field virtualisation, in particular: characteristics of virtuality and virtual structures operation, in-virtual organization work peculiarities, difficulties faced by the company manager with such form of work and criteria for the assessment of organization efficiency. The virtual organization is deemed to be the voluntary cooperation form of partners, aimed at project work type. This is the unique team, the basic resources of which are time and technologies. In general such organization does not have any geographical origin and it works using the Internet. In the context given herein, the virtual structure is considered in CAD conditions that is based on the high degree of construction field IT. Specific relations between the employees make the impact on the work process, therefore a number of both subjective (social, individual, etc. and objective (financial indices are given.

  11. Best practices of Building Information Modelling (BIM) implementation in design phase for construction project

    Science.gov (United States)

    Kasim, N.; Zainal Abidin, N. A.; Zainal, R.; Sarpin, N.; Rahim, M. H. I. Abd; Saikah, M.

    2017-11-01

    Implementation of Building Information Modelling (BIM) was expected to bring improvement in current practices of Malaysian construction industry. In the design phase, there is a lack of a ready pool of skilled workers who are able to develop BIM strategic plan and effectively utilise it. These create boundaries for BIM nature in Malaysian construction industry specifically in the design phase to achieve its best practices. Therefore, the objectives of this research are to investigate the current practices of BIM implementation in the design phase as well as the best practices factors of BIM implementation in the design phase. The qualitative research approach is carried out through semi-structured interviews with the designers of different organisations which adopt BIM in the design phase. Data collection is analysed by executing content analysis method. From the findings, the best practices factors of BIM implementation in design phase such as the incentive for BIM training, formal approach to monitoring automated Level of Detailing (LOD), run a virtual meeting and improve Industry Foundation Class (IFC). Thus, best practices factors which lead to practices improvements in the design phase of project development which subsequently improves the implementation of BIM in the design phase of Malaysian construction industry.

  12. The solar power satellite

    Energy Technology Data Exchange (ETDEWEB)

    Combes, P.F.

    1982-01-01

    The construction, launch, components, and operations of satellite solar power systems (SSPS) for direct beaming of solar energy converted to electricity to earth stations are outlined. The reference designs of either Si or concentrator GaAs solar cell assemblies large enough to project 5 GW of power are described. The beam will be furnished by klystrons or amplitrons for reception by rectennas on earth. Conforming to the law of amplitude and the equiphase law will permit high efficiencies, pointing accuracy, and low power deposition/sq cm, thus avoiding environmental problems, although some telecommunications systems may suffer interference. The construction of the dipole rectenna grid is sketched, noting that one receiver would be an ellipse sized at 10 x 13 km. Various forms of pollution which could result from the construction of an SSPS are examined.

  13. Satellite quenching time-scales in clusters from projected phase space measurements matched to simulated orbits

    Science.gov (United States)

    Oman, Kyle A.; Hudson, Michael J.

    2016-12-01

    We measure the star formation quenching efficiency and time-scale in cluster environments. Our method uses N-body simulations to estimate the probability distribution of possible orbits for a sample of observed Sloan Digital Sky Survey galaxies in and around clusters based on their position and velocity offsets from their host cluster. We study the relationship between their star formation rates and their likely orbital histories via a simple model in which star formation is quenched once a delay time after infall has elapsed. Our orbit library method is designed to isolate the environmental effect on the star formation rate due to a galaxy's present-day host cluster from `pre-processing' in previous group hosts. We find that quenching of satellite galaxies of all stellar masses in our sample (109-10^{11.5}M_{⊙}) by massive (> 10^{13} M_{⊙}) clusters is essentially 100 per cent efficient. Our fits show that all galaxies quench on their first infall, approximately at or within a Gyr of their first pericentric passage. There is little variation in the onset of quenching from galaxy-to-galaxy: the spread in this time is at most ˜2 Gyr at fixed M*. Higher mass satellites quench earlier, with very little dependence on host cluster mass in the range probed by our sample.

  14. 23 CFR 661.41 - After a bridge project has been completed (either PE or construction) what happens with the...

    Science.gov (United States)

    2010-04-01

    ... ADMINISTRATION, DEPARTMENT OF TRANSPORTATION ENGINEERING AND TRAFFIC OPERATIONS INDIAN RESERVATION ROAD BRIDGE PROGRAM § 661.41 After a bridge project has been completed (either PE or construction) what happens with... 23 Highways 1 2010-04-01 2010-04-01 false After a bridge project has been completed (either PE or...

  15. Enterprise Level Status and Control of Multi-Satellite Operations Project

    Data.gov (United States)

    National Aeronautics and Space Administration — The objective of this project is to take information from multiple operational environments and securely deliver it in a graphically useful manner to the end user....

  16. Telerobotic Satellite Servicing for Space System Life Extension and Performance Enhancement Project

    Data.gov (United States)

    National Aeronautics and Space Administration — By examining the occurrence rates and types of actual on-orbit failures, a failure servicing industry can be projected. Similarly, by examining the lifetimes of...

  17. An Appraisal of Project Procurement Methods in the Nigerian Construction Industry

    Directory of Open Access Journals (Sweden)

    Ujaddughe I.C.

    2010-01-01

    Full Text Available The aim of every client at the beginning of any project is to have at the end of the day a quality structure delivered on time and within budget. However, researches have shown that in most cases this aim is not met. The aim of the study that formed the basis for this paper was to identify and assess procurement methods in use in the Nigerian construction industry and identify the factors that affect the choice of the variants under the traditional and the non-conventional procurement methods. Data were collected using well-structured questionnaires administered to professionals in Lagos metropolis. Data collected were analyzed using descriptive and inferential statistics. The study reveals that the variants of traditional method of contract procurement are the most adopted in project execution in Nigeria. In making choice of procurement method, the study reveals that project completion at estimated time ranks as the highest factor considered for traditional method, while quality assurance ranks highest with non-conventional method.

  18. The effect of Problem/Project-Based Learning on a desired skill set for construction professionals

    Science.gov (United States)

    Sirotiak, Todd L.

    The purpose of this study was to investigate if a Problem/Project-Based Learning (PBL) approach can affect certain non-technical, "soft" skills of construction engineers. Such skills include leadership, adaptability, and stress management. In mixed design research, quantitative and qualitative data are assembled and analyzed collectively. For this study, two separate assessment tools were used for the quantitative portion, while open-ended written reflections and a partially closed-ended senior questionnaire were implemented for the qualitative portion. A hypothetical model was used to investigate certain soft skills based on prior research documenting need. Skills investigated were confidence, stress coping, leadership, communication skills, adaptability, and management skills. Descriptive statistics, open-ended final written reflections, and a partially closed-ended senior questionnaire were used to analyze the data. PBL is a process in which the students are challenged to develop realistic solutions on open, less structured, real world type problems. The results of this study performed with the combined count of nearly 60 students suggest that PBL can influence several soft skills of senior construction engineers. Specifically, these findings demonstrate the following: (a) PBL appears to affect students' soft skills; (b) students appear to recognize the realism and "real world" applicability that PBL brings to their skill development; and (c) the data suggest that the experience is holistic and offers opportunities for balanced growth in several ways. Some key competencies such as communication and leadership indicated significant enhancements. Although this study was limited to one academic year of the university's construction engineering program, it provides interesting insight to changes within the time period investigated. This study should be replicated in other construction engineering environments to investigate a larger population sample. In addition

  19. Financial and tax risks at implementation of "Chayanda- Lensk" section of "Sila Sibiri" gas transportation system construction project

    Science.gov (United States)

    Sharf, I. V.; Chukhareva, N. V.; Kuznetsova, L. P.

    2014-08-01

    High social and economic importance of large-scale projects on gasification of East Siberian regions of Russia and diversifying gas exports poses the problem of complex risk analysis of the project. This article discusses the various types of risks that could significantly affect the timing of the implementation and effectiveness of the project for the construction of the first line of "Sila Sibiri", the "Chayanda-Lensk" section. Special attention is paid to financial and tax aspects of the project. Graphically presented analysis of the dynamics of financial indicators reflect certain periods of effectiveness in implementing the project. Authors also discuss the possible causes and consequences of risks.

  20. Whole-House Design and Commissioning in the Project Home Again Hot-Humid New Construction Community

    Energy Technology Data Exchange (ETDEWEB)

    Kerrigan, P.

    2012-09-01

    BSC has been working with Project Home Again since 2008 and has consulted on the design of around 100 affordable, energy efficient new construction homes for victims of hurricanes Katrina and Rita. This report details the effort on the final two phases of the project: Phases V and VI which resulted in a total of 25 homes constructed in 2011. The goal of this project was to develop and implement an energy efficiency package that will achieve at least 20% whole house source energy savings improvement over the B10 Benchmark.

  1. Whole-House Design and Commissioning in the Project Home Again Hot-Humid New Construction Community

    Energy Technology Data Exchange (ETDEWEB)

    Kerrigan, Philip [Building Science Corporation, Somerville, MA (United States)

    2012-09-01

    Building Science Corporation has been working with Project Home Again since 2008 and has consulted on the design of around 100 affordable, energy efficient new construction homes for victims of hurricanes Katrina and Rita. This report details the effort on the final two phases of the project: Phases V and VI, which resulted in a total of 25 homes constructed in 2011. The goal of this project was to develop and implement an energy efficiency package that will achieve at least 20% whole house source energy savings improvement over the B10 Benchmark.

  2. Savannah River Plant engineering, design, and construction history of ``S`` projects and other work, January 1961--December 1964. Volume 2

    Energy Technology Data Exchange (ETDEWEB)

    1970-03-01

    The work described in this volume of ``S`` Projects History is an extension of the type of work described in Volume I. E.I. du Pont de flemours & Company had entered into Contract AT (07-2)-l with the United States Atomic Energy Commission to develop, design, construct, install, and operate facilities to produce heavy water, fissionable materials, and related products. Under this contract,, Du Pont constructed and operated the Savannah River Plant. The engineering, design, and construction for most of the larger ``S`` projects was performed by the Engineering DeDartment. For some of the large and many of the smaller projects the Engineering Department was responsible only for the construction because the Atomic Energy Division (AED) of the Explosives Department handled the other phases. The Engineering Department Costruction Division also performed the physical work for many of the plant work orders. This volume includes a general description of the Du Pont Engineering Department activities pertaining to the engineering, design, and construction of the ``S`` projects at the Savannah River Plant; brief summaries of the projects and principal work requests; and supplementary informaticn on a few subjects in Volume I for which final data was not available at the closing date. Projects and other plant engineering work which were handled entirely by the Explosives Department -- AED are not included in this history.

  3. Integration and Testing Challenges of Small, Multiple Satellite Missions: Experiences from the Space Technology 5 Project

    Science.gov (United States)

    Sauerwein, Timothy A.; Gostomski, Thomas

    2008-01-01

    The ST5 technology demonstration mission led by GSFC of NASA's New Millennium Program managed by JPL consisted of three micro satellites (approximately 30 kg each) deployed into orbit from the Pegasus XL launch vehicle. In order to meet the launch date schedule of ST5, a different approach was required rather than the standard I&T approach used for single, room-sized satellites. The three spacecraft were designed, integrated, and tested at NASA Goddard Space Flight Center. It was determined that there was insufficient time in the schedule to perform three spacecraft I&T activities in series using standard approaches. The solution was for spacecraft #1 to undergo integration and test first, followed by spacecraft #2 and #3 simultaneously. This simultaneous integration was successful for several reasons. Each spacecraft had a Lead Test Conductor who planned and coordinated their spacecraft through its integration and test activities. One team of engineers and technicians executed the integration of all three spacecraft, learning and gaining knowledge and efficiency as spacecraft #1 integration and testing progressed. They became acutely familiar with the hardware, operation and processes for I&T, thus had the experience and knowledge to safely execute I&T for spacecraft #2 and #3. The integration team was extremely versatile; each member could perform many different activities or work any spacecraft, when needed. ST5 was successfully integrated, tested and shipped to the launch site per the I&T schedule that was planned three years previously. The I&T campaign was completed with ST5's successful launch on March 22, 2006.

  4. Adaptation of the ISCCP cloud detection algorithm to combined AVHRR and SMMR arctic data. [International Satellite Cloud Climatology Project

    Science.gov (United States)

    Key, J.; Barry, R. G.

    1989-01-01

    The International Satellite Cloud Climatology Project (ISCCP) cloud detection algorithm is applied to artic data, and modifications are suggested. Both Advanced Very High Resolution Radiometer (AVHRR) and Scanning Multichannel Microwave Radiometer (SMMR) data are examined. Synthetic AVHRR and SMMR data are also generated. Modifications suggested include the use of snow and ice data sets for the estimation of surface parameters, additional AVHRR channels, and surface class characteristic values when clear sky values cannot be obtained. Greatest improvement in computed cloud fraction is realized over snow and ice surfaces; over other surfaces all versions perform similarly. Since the use of SMMR for surface analysis increases the computational burden, its use may be justified only over snow and ice-covered regions.

  5. User-inspired design methodology using Affordance Structure Matrix (ASM for construction projects

    Directory of Open Access Journals (Sweden)

    Maheswari J. Uma

    2017-01-01

    Full Text Available Traditionally, design phase of construction projects is often performed with incomplete and inaccurate user preferences. This is due to inefficiencies in the methodologies used for capturing the user requirements that can subsequently lead to inconsistencies and result in non-optimised end-result. Iterations and subsequent reworks due to such design inefficiencies is one of the major reasons for unsuccessful project delivery as they impact project performance measures such as time and cost among others. The existing design theories and practice are primarily based on functional requirements. Function-based design deals with design of artifact alone, which may yield favourable or unfavourable consequences with the design artifact. However, incorporating other interactions such as interactions between user & designer is necessary for optimised end-result. Hence, the objective of this research work is to devise a systematic design methodology considering all the three interactions among users, designers and artefacts for improved design efficiency. In this study, it has been attempted to apply the theory of affordances in a case project that involves the design of an offshore facility. A step-by-step methodology for developing Affordance Structure Matrix (ASM, which integrates House of Quality (HOQ and Design Structure Matrix (DSM, is proposed that can effectively capture the user requirements. HOQ is a popular quality management tool for capturing client requirements and DSM is a matrix-based tool that can capture the interdependency among the design entities. The proposed methodology utilises the strengths of both the tools, as DSM compliments HOQ in the process. In this methodology, different affordances such as AUA (Artifact-User-Affordance, AAA (Artifact-Artifact-Affordance and DDA (Designer-Designer-Affordance are captured systematically. Affordance is considered to be user-driven in this context that is in contrast to prevailing design

  6. Implementation of Case-Based Reasoning System for Knowledge Management of Power Plant Construction Projects in a Korean Company

    Science.gov (United States)

    Jang, Gil-Sang

    Recently, plant construction industries are enjoying a favorable business climate centering around developing countries and oil producing countries rich in oil money. This paper proposes a methodology of implementing corporation-wide case-based reasoning (CBR) system for effectively managing lessons learned knowledge like experiences and know-how obtained in performing power plant construction projects. Our methodology is consisted of 10 steps: user requirement analysis, information modeling, case modeling, case base design, similarity function design, user interface design, case base building, CBR module development, user interface development, integration test. Also, to illustrate the usability of proposed methodology, the practical CBR system is implemented for the plant construction business division of ’H’ company which has international competitiveness in the field of plant construction industry. At present, our CBR system is successfully utilizing as storing, sharing, and reusing the knowledge which is accumulated in performing power plant construction projects in the target enterprise.

  7. The Efficacy of Waste Management Plans in Australian Commercial Construction Refurbishment Projects

    Directory of Open Access Journals (Sweden)

    Mary Hardie

    2012-11-01

    Full Text Available Renovation and refurbishment of the existingcommercial building stock is a growing area oftotal construction activity and a significantgenerator of waste sent to landfill in Australia. Awritten waste management plan (WMP is awidespread regulatory requirement forcommercial office redevelopment projects. Thereis little evidence, however, that WMPs actuallyincrease the quantity of waste that is ultimatelydiverted from landfill. Some reports indicate anabsence of any formal verification or monitoringprocess by regulators to assess the efficacy ofthe plans. In order to gauge the extent of theproblem a survey was conducted of twenty fourconsultants and practitioners involved incommercial office building refurbishment projectsto determine the state of current practice withregard to WMPs and to elicit suggestions withregard to ways of making the process moreeffective. Considerable variation in commitmentto recycling policies was encountered indicatinga need to revisit waste minimisation practices ifthe environmental performance of refurbishmentprojects is to be improved.

  8. Curriculam change: construction of a new pedagogical training project in the field of Speech Therapy

    Directory of Open Access Journals (Sweden)

    Maria Cecília Bonini Trenche

    2008-01-01

    Full Text Available The first year of implementation of the new pedagogical project for the Speech Therapy course at the Catholic University of São Paulo (PUC-SP is analyzed. The aim was not only to analyze the changes in pedagogical concepts and practices, but also to construct collective work by the social body of the course. The results indicated that the new pedagogical activities (seminars, tutorials, workshops and instructive experiences were important tools for achieving the proposed changes in the new curricular model. Highlighted among other advances were: greater integration between basic disciplines and professionalizing activities; better comprehension by students of the importance of training based on the population's needs; greater linkage between teaching, research and extension activities; interaction among students at various levels of training, regarding health promotion and disease prevention actions; planning of supplementary pedagogical activities according to students' needs detected in educational assessments.

  9. Constructing and Representing: a New Project for 3d Surveying of Yazilikaya - HATTUŠA

    Science.gov (United States)

    Repola, L.; Marazzi, M.; Tilia, S.

    2017-05-01

    Within the cooperation project between the University Suor Orsola Benincasa of Naples and the archaeological mission in Hattuša of the German Archaeological Institute of Istanbul, directed by Andreas Schachner, in agreement with the Turkish Ministry of Culture and Tourism, the workgroup of the University of Naples, has carried out, in September 2015, a first survey campaign of the whole rocky site of Yazılıkaya. The experimentation has been finalized at constructing a global 3D territorial and monumental model of the site, capable that is, through the application of differing scanning procedures, according to the different components (topography, rocky complex, the cultural spaces therein, complex of sculptural reliefs, inscriptions accompanying the divine representations), of virtually reproducing in detail, for safegaurd, exhibition and study purposes (in particular from an epigraphical and historic-artistic point of view) all the aspects characterizing the artefact and not completely visible to the naked eye today.

  10. Expanding uses of building information modeling in life-cycle construction projects.

    Science.gov (United States)

    Hannele, Kerosuo; Reijo, Miettinen; Tarja, Mäki; Sami, Paavola; Jenni, Korpela; Teija, Rantala

    2012-01-01

    BIM is targeted at providing information about the entire building and a complete set of design documents and data stored in an integrated database. In this paper, we study the use of BIM in two life-cycle construction projects in Kuopio, Finland during 2011. The analysis of uses of BIM and their main problems will constitute a foundation for an intervention. We will focus on the following questions: (1) How different partners use the composite BIM model? (2) What are the major contradictions or problems in the BIM use? The preliminary findings reported in this study show that BIM has been adopted quite generally to design use but the old ways of collaboration seem to prevail, especially between designers and between designers and building sites. BIM has provided new means and demands for collaboration but expansive uses of BIM for providing new interactive processes across professional fields have not much come true.

  11. Formation of new methodological approaches to determining the cost of equipment for capital construction projects

    Directory of Open Access Journals (Sweden)

    Didkovskaya Olga

    2017-01-01

    Full Text Available The article presents author’s ideas on the transformation of methodological approaches to determining the cost of technological equipment associated with capital construction objects. Diagnostics showed that the estimated norms for the installation of equipment in the current estimate and regulatory database contain hundreds of obsolete items. At the same time monitoring of the equipment market and comparison of its result with the norms show the absence of even more positions necessary for calculating the cost of modern equipment for capital construction projects. The proposed changes in the existing practice of standardizing the costs of installing equipment using obsolete estimates are based on the results of the author’s analysis. The analysis is carried out in the form of continuous diagnostics of existing standards and their comparison with modern market indicators and methods of determining the cost of technological equipment, its installation and commissioning. Authors propose to revise the methodological approaches to determining the estimated cost of industrial equipment, bringing it closer to the real market pricing conditions. The formation of current standards should be made on the basis of analysis and processing of information from manufacturers/suppliers and collective peer reviews, i.e. through analytical, statistical and expert methods.

  12. Application of project risk management and performance indices in the construction sector: a case study

    Directory of Open Access Journals (Sweden)

    Andrea Ciaramella

    2013-10-01

    Full Text Available In the construction sector, proper risk management may contribute effectively to improving decision-making processes. Principals and operators (businesses and professionals may derive benefits from reducing environmental variability and uncertainty, limiting costsdue to errors and the improper use of resources and significantly improving the quality of information streams. The article illustrates the results of two studies, the first conducted in the United Arab Emirates and the second carried out in Italy, with a similar methodological approach and objectives: verifying the nature of the main risks in construction, identifying to which party (owner or contractor responsibility for such risks is assigned in practice, representing the circumstances in which responsibility is to be considered shared and emphasising the risks with the greatest probability of occurrence. The classification of identified risks allowsprincipals not so much to prevent occurrences that may have impacts on a project as to limit and contain the events (risk reduction, partly through constant monitoring and control of activities, which is the most important critical factor to success.

  13. Application of Earned Value Method for evaluation the Time/Cost Consequences of Variation Orders in a Construction Project

    Science.gov (United States)

    Czemplik, Andrzej

    2017-10-01

    The decision-making process of acceptance of the variations order (VO) for running construction project is always subjected to the risk of consequences, which are difficult to be defined. But, even having all the technical and organizational consequences identified, their impact on the project completion date and final project cost, is not easy to state. The practical methodology of using the Earned Value Method (EVM) as a tool supporting the acceptance decision of the VO being considered during construction works, is presented in the paper. The main strength of the presented concept is a quick prognosis of the final project completion date and the final project cost in case the VO is accepted.

  14. INFORMATIONAL COMMUNICATION BETWEEN THE PARTICIPANTS OF A CONSTRUCTION PROJECT AS AN ADDITIONAL FACTOR IN EVALUATING THE ORGANIZATIONAL AND TECHNOLOGICAL CAPACITY

    Directory of Open Access Journals (Sweden)

    Lapidus Azariy Abramovich

    2016-06-01

    Full Text Available The current trends of dynamic implementation of new materials, equipment and organizational and technological solutions in the construction lead to increase of information volume. Although the great amount of information flows isn’t fixed in the final variant of design documentation or doesn’t reach the construction site as instructions. This problem is most pressing for major construction projects. The main reason for such a loss of information is inefficiency of data management. The article discusses the influence of the interaction between the participants of a construction project on the effectiveness of the use of information flows within the construction project. The article also indicates the justification of such influence for organizational and technological building project evaluation, which is formed on the basis of information flows. The basic components of the information flow and conditions of effective transfer to final recipient are given. The concept of the role of a participant of building project is introduced as social component of information flow transfer is.

  15. Project W-320, 241-C-106 sluicing: Construction specification W-320-C5

    Energy Technology Data Exchange (ETDEWEB)

    Bailey, J.W.

    1998-07-20

    This supporting document has been prepared to make the construction specifications for Project W-320 readily available. Project W-320, Waste Retrieval Sluicing System (WRSS), specification is for procurement, fabrication and installation of equipment at the C Tank Farm, including Operator Station and some equipment just outside the C Tank Farm fence, necessary to support the sluicing operation. Work consists of furnishing labor, equipment, and materials to provide the means to procure materials and equipment, fabricate items, excavate and place concrete, and install equipment, piping, wiring, and structures in accordance with the Contract Documents. Major work elements include: Excavation for process and fire protection piping, electrical conduit trenches, and foundations for small structures; Placement of concrete cover blocks, foundations, and equipment pads; Procurement and installation of double walled piping, electrical conduit, fire and raw water piping, chilled water piping, and electrical cable; Procurement and installation of above-ground ventilation system piping between the (HVAC) Process building and Tank C-106; Core drill existing concrete; Furnish and installation of electrical distribution equipment; Installation of the concrete foundation, and assembly installation of the two Seismic Shutdown Systems with Environmental Enclosures; Fabrication and installation of in-pit pipe jumpers, including related valves, instruments and wiring; and Installation of a vertical submersible pump, horizontal booster pump, and winch assembly into tank access riser pits.

  16. Project W-320, 241-C-106 sluicing: Construction specification W-320-C7

    Energy Technology Data Exchange (ETDEWEB)

    Bailey, J.W.

    1998-07-20

    This supporting document has been prepared to make the construction specifications for Project W-320 readily available. Project W-320, Waste Retrieval Sluicing System (WRSS), specification is for procurement, fabrication and installation of equipment at the C Tank Farm, including Operator Station and some equipment just outside the C Tank Farm fence, necessary to support the sluicing operation. Work consists of furnishing labor, equipment, and materials to provide the means to procure materials and equipment, fabricate items, excavate and place concrete, and install equipment, piping, wiring, and structures in accordance with the Contract Documents. Major work elements include: Excavation for process and fire protection piping, electrical conduit trenches, and foundations for small structures; Placement of concrete cover blocks, foundations, and equipment pads; Procurement and installation of double walled piping, electrical conduit, fire and raw water piping, chilled water piping, and electrical cable; Procurement and installation of above-ground ventilation system piping between the (HVAC) Process building and Tank C-106; Core drill existing concrete; Furnish and installation of electrical distribution equipment; Installation of the concrete foundation, and assembly installation of the two Seismic Shutdown Systems with Environmental Enclosures; Fabrication and installation of in-pit pipe jumpers, including related valves, instruments and wiring; and Installation of a vertical submersible pump, horizontal booster pump, and winch assembly into tank access riser pits.

  17. Project W-320, 241-C-106 sluicing: Construction specification W-320-C2

    Energy Technology Data Exchange (ETDEWEB)

    Bailey, J.W.

    1998-07-20

    This supporting document has been prepared to make the construction specifications for Project W-320 readily available. Project W-320, Waste Retrieval Sluicing System (WRSS), specification is for procurement, fabrication and installation of equipment at the C Tank Farm, including Operator Station and some equipment just outside the C Tank Farm fence, necessary to support the sluicing operation. Work consists of furnishing labor, equipment, and materials to provide the means to procure materials and equipment, fabricate items, excavate and place concrete, and install equipment, piping, wiring, and structures in accordance with the Contract Documents. Major work elements include: Excavation for process and fire protection piping, electrical conduit trenches, and foundations for small structures; Placement of concrete cover blocks, foundations, and equipment pads; Procurement and installation of double walled piping, electrical conduit, fire and raw water piping, chilled water piping, and electrical cable; Procurement and installation of above-ground ventilation system piping between the (HVAC) Process building and Tank C-106; Core drill existing concrete; Furnish and installation of electrical distribution equipment; Installation of the concrete foundation, and assembly installation of the two Seismic Shutdown Systems with Environmental Enclosures; Fabrication and installation of in-pit pipe jumpers, including related valves, instruments and wiring; and Installation of a vertical submersible pump, horizontal booster pump, and winch assembly into tank access riser pits.

  18. Project W-320, 241-C-106 sluicing: Construction specification W-320-C6

    Energy Technology Data Exchange (ETDEWEB)

    Bailey, J.W.

    1998-07-20

    This supporting document has been prepared to make the construction specifications for Project W-320 readily available. Project W-320, Waste Retrieval Sluicing System (WRSS), specification is for procurement, fabrication and installation of equipment at the C Tank Farm, including Operator Station and some equipment just outside the C Tank Farm fence, necessary to support the sluicing operation. Work consists of furnishing labor, equipment, and materials to provide the means to procure materials and equipment, fabricate items, excavate and place concrete, and install equipment, piping, wiring, and structures in accordance with the Contract Documents. Major work elements include: Excavation for process and fire protection piping, electrical conduit trenches, and foundations for small structures; Placement of concrete cover blocks, foundations, and equipment pads; Procurement and installation of double walled piping, electrical conduit, fire and raw water piping, chilled water piping, and electrical cable; Procurement and installation of above-ground ventilation system piping between the (HVAC) Process building and Tank C-106; Core drill existing concrete; Furnish and installation of electrical distribution equipment; Installation of the concrete foundation, and assembly installation of the two Seismic Shutdown Systems with Environmental Enclosures; Fabrication and installation of in-pit pipe jumpers, including related valves, instruments and wiring; and Installation of a vertical submersible pump, horizontal booster pump, and winch assembly into tank access riser pits.

  19. Early Involvement and Integration in Construction Projects: The Benefits of DfX in Elimination of Wastes

    Directory of Open Access Journals (Sweden)

    Heikki Halttula

    2017-12-01

    Full Text Available Typical construction processes provide waste: material waste but especially process-related waste. The majority of this waste can be avoided with efficient planning in the front end of projects. The main aim is to describe how the concept of Design for Excellence (DfX can reduce the most severe waste in construction projects. Based on a literature review of waste and requirements that aid early involvement and integration, we created a survey for analyzing and prioritizing types of waste in the construction industry. We describe how DFX reduces this waste, especially through the use of early involvement and integration. When applied, DfX creates incentives for project stakeholders to eliminate waste automatically through early involvement and integration.

  20. Use of technology during planning and construction of a 15 MW hydroelectric project : yesterday, today, and tomorrow

    Energy Technology Data Exchange (ETDEWEB)

    Colwell, D.E. [Construction Technology Centre Atlantic, Fredericton, NB (Canada); Waugh, L.M. [New Brunswick Univ., Fredericton, NB (Canada)

    2007-07-01

    A case study of the technology aspects of a 15 megawatt dam re-development project located in St. George, New Brunswick was presented. The paper provided an overview of the project and identified technologies implemented during the project. The project used 21 innovative and traditional technologies that played an integral role in the project, such as: remote video; digital cameras; a public web site; scheduling software; and cost accounting. The technologies were described and categorized by type, by role, and by purpose. Type categories included hardware, software, LAN/Web, and telecommunications. Role categories include: project management, engineering, and construction. Purpose categories included general, analysis, documentation, interactive, and sharing. Based on the predominate technologies identified in the study and the expertise of the authors, three technologies were selected that had a high potential to be implemented today due to their evolution and for changes in the costs and infrastructure requirements of these technologies. These technologies were interactive whiteboards, web-based collaboration, and virtual reality panoramas. The paper made several recommendations such as continued research on the implementation of technologies for dam projects to identify trends and to suggest technologies that add value to the project, and on the technology adoption cycle within projects, within individual firms, and within specific industries such as dam construction. 17 refs., 2 tabs., 8 figs.