WorldWideScience

Sample records for events project construction

  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. Project and construction of a sequential counter with RAM chips random events

    International Nuclear Information System (INIS)

    Bertini, J.

    1985-01-01

    The project and construction of an electronic system to observe random events, which frequency is registered in successive time intervals with predetermined duration time are presented. The system was developed to study decay of radioactive nuclei with half lives is between 10 -6 s and 10 4 s. The chip MOS RAM - 2114 - 2 which is slow and cheap was used. The register time is twc=200ns. (M.C.K.) [pt

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

    International Nuclear Information System (INIS)

    Abbrescia, M.; An, S.; Antolini, R.; Badala, 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.

    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

  4. 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.

  5. Reduced analysis and confirmatory research on co-adaptability theoretical solution to conflicting events in construction engineering projects

    Institute of Scientific and Technical Information of China (English)

    2010-01-01

    The co-adaptability theoretical solution to conflicting events in construction engineering projects has three problems. First, the transformation of constraint conditions of theoretical solution is very difficult in practical engineering applications; second, some coefficients are difficult to be determined; third, there are overfull circular arithmetic operations involved in it. To resolve these problems, a new method to reduce the theoretical solution complications is proposed. By analyzing the operating mechanism of theoretical solution model, redundancies in the theoretical solution can be eliminated, and the ISM mapping with the co-adaptability solution can be set up. Based on this approach, a procedure to solve practical conflicting events in construction projects is established by replacing characteristic variables with mathematic variables. The research results show that the procedure can replace the co-adaptability theoretical solution effectively and solve practical conflicting events in construction projects.

  6. 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...

  7. CRITICAL EVENTS IN CONSTRUCTION PROCESS

    DEFF Research Database (Denmark)

    Jørgensen, Kirsten; Rasmussen, Grane Mikael Gregaard

    2009-01-01

    cause-effects of failures and defects in the construction industry by using an analytical approach (The bowtie model) which is developed in the accident research. Using this model clarifies the relationships within the chain of failures that causes critical events with undesirable consequences......Function failures, defects and poor communication are major problems in the construction industry. These failures and defects are caused by a row of critical events in the construction process. The purpose of this paper is to define “critical events” in the construction process and to investigate....... In this way the causes of failures and the relationships between various failures are rendered visible. A large construction site was observed from start to finish as the empirical element in the research. The research focuses on all kinds of critical events identified throughout every phase during...

  8. Organizational analysis of construction projects

    OpenAIRE

    Hughes, Will

    1989-01-01

    This research project is about the analysis of construction project organizations. The work is based on organizational theory and is a development of Linear Responsibility Analysis (LRA). The aim is to assess the extent to which project success is affected by organizational structure. The analysis of four public sector case studies raises several issues. First is the need for a systematic model of describing and analysing construction project environments. A framework has been developed that ...

  9. Radioactive materials in construction projects

    International Nuclear Information System (INIS)

    Herrmann, Ralf; Ohlendorf, Frank; Kaltz, Andrea Christine

    2014-01-01

    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.

  10. Project and Sports Events Management

    OpenAIRE

    Sebastian Madalin MUNTEANU

    2011-01-01

    This paper tries to capture the importance it holds the project management in socio-cultural sector which stands out when we refer to the sport. So when we talk about project management in sport, to consider a much larger vision, a new project management perspective, they involve a responsibility for the implementation of an event with global impact on very long term. Sports projects, as history shows us, played a significant role in developing societies. Also, all major sports industry proje...

  11. Social cost in construction projects

    Energy Technology Data Exchange (ETDEWEB)

    Çelik, Tolga, E-mail: tolga.celik@emu.edu.tr [Department of Civil Engineering, Eastern Mediterranean University, Famagusta, T.R. North Cyprus, Via Mersin 10 (Turkey); Kamali, Saeed, E-mail: saeedkamali2002@gmail.com [Civil Engineering Department, Middle East Technical University, 06800 Ankara (Turkey); Arayici, Yusuf, E-mail: yusuf.arayici@hku.edu.tr [Department of Civil Engineering, Hasan Kalyoncu University, Gaziantep (Turkey)

    2017-05-15

    Despite the fact that completion of construction projects has a direct positive impact on the growth of national and local economies as well as humans' wellbeing, construction projects, especially in the urban areas, generate serious environmental nuisances for the adjacent residents and have unintentional adverse impacts on their surrounding environment. Construction causative adverse impacts on the neighbouring communities are known as the social costs. This study aims to present a state-of-the-art overview of social costs in construction industry in terms of definition, consideration, classification and quantification. Furthermore, it is aimed to bring the construction social cost phenomenon for the agenda of Environmental Impact Assessors.

  12. Social cost in construction projects

    International Nuclear Information System (INIS)

    Çelik, Tolga; Kamali, Saeed; Arayici, Yusuf

    2017-01-01

    Despite the fact that completion of construction projects has a direct positive impact on the growth of national and local economies as well as humans' wellbeing, construction projects, especially in the urban areas, generate serious environmental nuisances for the adjacent residents and have unintentional adverse impacts on their surrounding environment. Construction causative adverse impacts on the neighbouring communities are known as the social costs. This study aims to present a state-of-the-art overview of social costs in construction industry in terms of definition, consideration, classification and quantification. Furthermore, it is aimed to bring the construction social cost phenomenon for the agenda of Environmental Impact Assessors.

  13. 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.

  14. EPR project construction cost control

    International Nuclear Information System (INIS)

    Duflo, D.; Pouget-Abadie, X.; Dufour, A.; Kauffmann, G.

    2001-01-01

    The EPR project is now managed by EDF in cooperation with the German Utilities. The main engineering activities for this period are related to the preparation of construction project management, deepening of some safety issues, definition of the project technical reference. The EPR project concerns the so-called reference unit, that is an isolated first-off unit, with unit electrical power of about 1500 MW. The construction costs evaluated are those of the nuclear island, the conventional island, site facilities, installation work and the administrative buildings. The EPR project construction cost evaluation method applies to all the equipment installed and commissioned. It requires the availability of a preliminary project detailed enough to identify the bill of quantities. To these quantities are then assigned updated unit prices that are based either on cost bases for similar and recent facilities or taken from request for quotation for similar equipment or result from gains due to contractual conditions benefiting from simplifications in the functional and technical specifications. The input and output data are managed in a model that respects the breakdown on which the evaluation method is based. The structural organization of this method reflects a functional breakdown on the one hand (nuclear island, conventional island, common site elements) and on the other hand a breakdown according to equipment or activity (civil engineering, mechanics, electricity, instrumentation and control). This paper discusses the principle and the method of construction cost evaluation carried out, the cost data base and input and output parameters as well as results and oncoming cost analysis tasks. (author)

  15. Quality planning in Construction Project

    Science.gov (United States)

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

    2017-12-01

    The purpose of this paper is to investigate deeper on the factors that contribute to the effectiveness of quality planning, identifying the common problems encountered in quality planning, practices and ways for improvements in quality planning for construction projects. This paper involves data collected from construction company representatives across Malaysia that are obtained through semi-structured interviews as well as questionnaire distributions. Results shows that design of experiments (average index: 4.61), inspection (average index: 4.45) and quality audit as well as other methods (average index: 4.26) rank first, second and third most important factors respectively.

  16. Constructing Identities through Literacy Events in HIV/AIDS Education

    Science.gov (United States)

    Higgins, Christina

    2014-01-01

    This article examines the literacy events in HIV/AIDS education in Tanzania to investigate how they construct social identities for participants and to what extent they provide opportunities for critical health literacies. The projects took place as collaborative research partnerships with local Tanzanian NGOs in an effort to analyse and improve…

  17. Construction of the STAR Event Plane Detector

    Science.gov (United States)

    Adams, Joseph

    2017-09-01

    The Event Plane Detector (EPD) is an upgrade to the STAR experiment at RHIC, providing high granularity and acceptance in the forward (2.2 run for commissioning. In this talk I will discuss the construction of the EPD, the installation of the quarter wheel, and plans for full installation in 2018.

  18. Constructive use of holographic projections

    International Nuclear Information System (INIS)

    Schroer, Bert

    2008-01-01

    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)

  19. 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)

  20. Attack Graph Construction for Security Events Analysis

    Directory of Open Access Journals (Sweden)

    Andrey Alexeevich Chechulin

    2014-09-01

    Full Text Available The paper is devoted to investigation of the attack graphs construction and analysis task for a network security evaluation and real-time security event processing. Main object of this research is the attack modeling process. The paper contains the description of attack graphs building, modifying and analysis technique as well as overview of implemented prototype for network security analysis based on attack graph approach.

  1. 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...

  2. Environmental standards and project construction: A review

    International Nuclear Information System (INIS)

    Mason, P.F.; Thornberry, H.L.

    1991-01-01

    In the past decade, changes have occurred in the area of environmental regulation. This paper identifies the typical environmental standards applicable to project construction, recent environmental regulatory issues and trends, and identifies new environmental issues which must be considered in project construction. These include (1) handling hazardous chemicals in the workplace, (2) construction at formerly utilized sites, (3) disposal of debris, construction materials and hazardous waste, and (4) training and experience of construction personnel in environmental issues

  3. Constructing Dynamic Event Trees from Markov Models

    International Nuclear Information System (INIS)

    Paolo Bucci; Jason Kirschenbaum; Tunc Aldemir; Curtis Smith; Ted Wood

    2006-01-01

    In the probabilistic risk assessment (PRA) of process plants, Markov models can be used to model accurately the complex dynamic interactions between plant physical process variables (e.g., temperature, pressure, etc.) and the instrumentation and control system that monitors and manages the process. One limitation of this approach that has prevented its use in nuclear power plant PRAs is the difficulty of integrating the results of a Markov analysis into an existing PRA. In this paper, we explore a new approach to the generation of failure scenarios and their compilation into dynamic event trees from a Markov model of the system. These event trees can be integrated into an existing PRA using software tools such as SAPHIRE. To implement our approach, we first construct a discrete-time Markov chain modeling the system of interest by: (a) partitioning the process variable state space into magnitude intervals (cells), (b) using analytical equations or a system simulator to determine the transition probabilities between the cells through the cell-to-cell mapping technique, and, (c) using given failure/repair data for all the components of interest. The Markov transition matrix thus generated can be thought of as a process model describing the stochastic dynamic behavior of the finite-state system. We can therefore search the state space starting from a set of initial states to explore all possible paths to failure (scenarios) with associated probabilities. We can also construct event trees of arbitrary depth by tracing paths from a chosen initiating event and recording the following events while keeping track of the probabilities associated with each branch in the tree. As an example of our approach, we use the simple level control system often used as benchmark in the literature with one process variable (liquid level in a tank), and three control units: a drain unit and two supply units. Each unit includes a separate level sensor to observe the liquid level in the tank

  4. Understanding Applications of Project Planning and Scheduling in Construction Projects

    OpenAIRE

    AlNasseri, Hammad Abdullah

    2015-01-01

    Construction project life-cycle processes must be managed in a more effective and predictable way to meet project stakeholders’ needs. However, there is increasing concern about whether know-how effectively improves understanding of underlying theories of project management processes for construction organizations and their project managers. Project planning and scheduling are considered as key and challenging tools in controlling and monitoring project performance, but many worldwide constru...

  5. Causes of Construction Delays in Qatar Construction Projects

    OpenAIRE

    Murat Gunduz; Mohanad H. A. AbuHassan

    2016-01-01

    Construction industry mainly focuses on the superstructure, infrastructure, and oil and gas industry. The development of infrastructure projects in developing countries attracted a lot of foreign construction contractors, consultants, suppliers and diversified workforce to interfere and to be evolved in such huge investment. Reducing worksite delays in such projects require knowledge and attention. Therefore, it is important to identify the influencing delay attributes affecting construction ...

  6. 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.

  7. 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...

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

    African Journals Online (AJOL)

    Keywords: Communication skills and leadership model, construction project ..... help a manager handle stress and break tension (Gido & Clements,. 2012: 331; Harrin .... production and management of projects, the higher the demand for.

  9. Construction and Updating of Event Models in Auditory Event Processing

    Science.gov (United States)

    Huff, Markus; Maurer, Annika E.; Brich, Irina; Pagenkopf, Anne; Wickelmaier, Florian; Papenmeier, Frank

    2018-01-01

    Humans segment the continuous stream of sensory information into distinct events at points of change. Between 2 events, humans perceive an event boundary. Present theories propose changes in the sensory information to trigger updating processes of the present event model. Increased encoding effort finally leads to a memory benefit at event…

  10. Qinshan CANDU project open top construction method

    International Nuclear Information System (INIS)

    Petrunik, K.J.; Wittann, K.; Khan, A.; Ricciuti, R.; Ivanov, A.; Chen, S.

    2003-01-01

    The significant schedule reductions achieved on the Qinshan CANDU Project were due in large part to the incorporation of advanced construction technologies in project design and delivery. For the Qinshan Project, a number of key advantages were realized through the use of the 'Open Top' construction method. This paper discusses the Qinshan Phase III CANDU Project Open Top implementation method. The Open Top method allowed major equipment to be installed simply, via the use of a Very Heavy Lift (VHL) crane and permitted the use of large-scale modularization. The advantages of Open Top construction, such as simplified access, more flexible project scheduling, improved construction safety and quality, and reduced labours are presented. The large-scale modularization of the Reactor Building Dousing System and the Open Top installation method and advantages relative to traditional CANDU 6 construction practices are also presented. Finally, major improvements for future CANDU plant construction using the Open Top method are discussed. (author)

  11. The RESET project: constructing a European tephra lattice for refined synchronisation of environmental and archaeological events during the last c. 100 ka

    Czech Academy of Sciences Publication Activity Database

    Lowe, J. J.; Ramsey, C. B.; Housley, R. A.; Lane, C. S.; Tomlinson, E. L.; Stringer, C.; Davies, W.; Barton, N.; Pollard, M.; Gamble, C.; Menzies, M.; Rohling, E.; Roberts, A.; Blockley, S.; Cullen, V.; Grant, K.; Lewis, M.; MacLeod, A.; White, D.; Albert, P.; Hardiman, M.; Lee, S.; Oh, A.; Satow, C.; Cross, J. K.; Bramham Law, C.; Todman, A.; Bourne, A.; Matthews, I.; Müller, W.; Smith, V.; Wulf, S.; Anghelinu, M.; Antl-Weiser, W.; Bar-Yosef, O.; Borić, D.; Boscato, P.; Ronchitelli, A.; Chabai, V.; Veselsky, A.; Uthmeier, T.; Farrand, W.; Gjipali, I.; Ruka, R.; Güleç, E.; Karavanić, I.; Karkanas, P.; King, T.; Komšo, D.; Koumouzelis, M.; Kyparissi, N.; Lengyel, G.; Mester, Z.; Neruda, P.; Nigst, P.; Haesaerts, P.; Panagopoulou, E.; Shalamanov-Korobar, L.; Tolevski, I.; Sinitsyn, A.; Sirakov, N.; Guadelli, A.; Guadelli, J.-L.; Ferrier, C.; Škrdla, Petr; Slimak, L.; Soler, N.; Soller, J.; Soressi, M.; Tushabramishvilii, N.; Zilhão, J.; Angelucci, D.; Cullen, V. L.; Lincoln, P.; Staff, R.; Flower, K.; Aouadi-Abdeljaouad, N.; Belhouchet, L.; Barker, G.; Bouzouggar, A.; Van Peer, P.; Kindermann, K.; Gerken, K.; Niemann, H.; Tipping, R.; Saville, A.; Ward, T.; Clausen, I.; Weber, M.-J.; Kaiser, K.; Torksdorf, J. F.; Turner, F.; Veil, S.; Nygaard, N.; Pyne-O'Donnel, S. D. F.; Masojć, M.; Nalepka, D.; Jurochnik, A.; Kabaciński, J.; Antoine, P.; Olive, M.; Christensen, M.; Bodu, P.; Debout, G.; Orliac, M.; De Bie, M.; Van Gils, M.; Paulissen, E.; Brou, L.; Leesch, D.; Hadorn, P.; Thew, N.; Riede, F.; Heinen, M.; Joris, O.; Richter, J.; Knipping, M.; Stika, H.-P.; Friedrich, M.; Conard, N. J.; Malina, M.; Kind, C.-J.; Beutelspacher, T.; Mortensen, M. F.; Burdukiewicz, J. M.; Szynkiewicz, A.; Połtowicz-Bobak, M.; Bobak, D.; Wiśniewski, A.; Przeździecki, M.; Valde-Nowak, P.; Muzyczuk, A.; Davies, L.; Morgan, P.; Aydar, E.; Çubukçu, E.; Brown, R.; Coltelli, M.; Lo Castro, D.; Cioni, R.; DeRosa, R.; Donato, P.; Di Roberto, A.; Gertisser, R.; Giordano, G.; Branney, M.; Jordan, N.; Keller, J.; Kinvig, H.; Gottsman, J.; Blundy, J.; Marani, M.; Orsi, G.; Civetta, L.; Arienzo, I.; Carandente, A.; Rosi, M.; Zanchetta, G.; Seghedi, I.; Szakacs, A.; Sulpizio, R.; Thordarson, T.; Trincardi, F.; Vigliotti, L.; Asioli, A.; Piva, A.; Andrič, M.; Brauer, A.; de Klerk, P.; Filippi, M.-L.; Finsinger, W.; Galović, L.; Jones, T.; Lotter, A.; Müller, U.; Pross, J.; Mangerud, J.; Lohne, Ø.; Pyne-O'Donnell, S.; Markovic, S.; Pini, R.; Ravazzi, C.; Theuerkauf, M.; Tzedakis, C.; Margari, V.; Veres, D.; Wastegård, S.; Ortiz, J. E.; Torres, T.; Díaz-Bautista, A.; Moreno, A.; Valero-Garcés, B.; Lowick, S.; Ottolini, L.

    2015-01-01

    Roč. 118, 15 June 2015 (2015), s. 1-17 ISSN 0277-3791 Institutional support: RVO:68081758 Keywords : Last Glacial stage * Dansgaard-Oeschger and Heinrich events * Abrupt environmental transitions (AETs) * Middle to Upper Palaeolithic * Volcanic ash isochrons * Tephra geochemistry * Tephra database Subject RIV: AC - Archeology, Anthropology, Ethnology Impact factor: 4.521, year: 2015

  12. Construction and updating of event models in auditory event processing.

    Science.gov (United States)

    Huff, Markus; Maurer, Annika E; Brich, Irina; Pagenkopf, Anne; Wickelmaier, Florian; Papenmeier, Frank

    2018-02-01

    Humans segment the continuous stream of sensory information into distinct events at points of change. Between 2 events, humans perceive an event boundary. Present theories propose changes in the sensory information to trigger updating processes of the present event model. Increased encoding effort finally leads to a memory benefit at event boundaries. Evidence from reading time studies (increased reading times with increasing amount of change) suggest that updating of event models is incremental. We present results from 5 experiments that studied event processing (including memory formation processes and reading times) using an audio drama as well as a transcript thereof as stimulus material. Experiments 1a and 1b replicated the event boundary advantage effect for memory. In contrast to recent evidence from studies using visual stimulus material, Experiments 2a and 2b found no support for incremental updating with normally sighted and blind participants for recognition memory. In Experiment 3, we replicated Experiment 2a using a written transcript of the audio drama as stimulus material, allowing us to disentangle encoding and retrieval processes. Our results indicate incremental updating processes at encoding (as measured with reading times). At the same time, we again found recognition performance to be unaffected by the amount of change. We discuss these findings in light of current event cognition theories. (PsycINFO Database Record (c) 2018 APA, all rights reserved).

  13. 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 ...

  14. Biomass furnace: projection and construction

    Energy Technology Data Exchange (ETDEWEB)

    Melo, Fernanda Augusta de Oliveira; Silva, Juarez Sousa e; Silva, Denise de Freitas; Sampaio, Cristiane Pires; Nascimento Junior, Jose Henrique do [Universidade Federal de Vicosa (DEA/UFV), MG (Brazil). Dept. de Engenharia Agricola

    2008-07-01

    Of all the ways to convert biomass into thermal energy, direct combustion is the oldest. The thermal-chemical technologies of biomass conversion such as pyrolysis and gasification, are currently not the most important alternatives; combustion is responsible for 97% of the bio-energy produced in the world (Demirbas, 2003). For this work, a small furnace was designed and constructed to use biomass as its main source of fuel, and the combustion chamber was coupled with a helical transporter which linked to the secondary fuel reservoir to continually feed the combustion chamber with fine particles of agro-industrial residues. The design of the stove proved to be technically viable beginning with the balance of mass and energy for the air heating system. The proposed heat generator was easily constructed as it made use of simple and easily acquired materials, demanding no specialized labor. (author)

  15. Construction Management of Electromechanical Engineering Project in Petrochemical Construction

    Directory of Open Access Journals (Sweden)

    Xi Tao

    2017-03-01

    Full Text Available Petrochemical industry as a basic industry, occupies a pivotal position in the national economy, with the continuous development of science and technology, electromechanical automation in the petrochemical industry has been widely used to save a lot of labor but also greatly improve the oil Chemical industry production efficiency. Therefore, in the construction of petrochemical industry, mechanical and electrical engineering as part of it. It plays a vital role. Petrochemical industry with the production of high temperature and high pressure and flammable and explosive gas, can strengthen the construction of mechanical and electrical engineering specialization and construction management of scientific, has become the relationship between the smooth development of mechanical and electrical engineering and engineering quality of the key, A direct impact on the petrochemical construction of the overall construction quality. To this end, it is necessary for the construction of petrochemical construction of electromechanical engineering construction management to promote the construction of mechanical and electrical engineering management level gradually increased. This article on the machine Electric engineering project construction management were discussed with a view to the petrochemical construction in the relevant aspects of the need to provide reference for reference.

  16. MULTIPLE PROJECT MANAGEMENT IN THE CONSTRUCTION INDSUTRY

    Directory of Open Access Journals (Sweden)

    Luciana Hazin Alencar

    2010-06-01

    Full Text Available The field of project management has historically focused on the administration of one project at a time, a focus that is insufficient given the growing need for organizations to manage multiple projects simultaneously. The requirements of Multiple Project Management (MPM involves demands and practices that are different from those of single projects. MPM poses a special need for coordination of shared resources across multiple projects in a way that can maintain the firm’s strategic focus and facilitate effective decision making. The construction industry is noteworthy for its frequent need for the management of multiple projects. This paper offers a review of the last five years of indexed literature related to multiple project management in the construction industry, identifies gaps and suggests promising new avenues of inquiry.

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

    African Journals Online (AJOL)

    Log in or Register to get access to full text downloads. ... (decision-making, problem-solving, listening, verbal competency, motivation, persuasion, ... Keywords: Communication skills and leadership model, construction project management, ...

  18. 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)

  19. Delivering construction projects using innovative building technologies

    CSIR Research Space (South Africa)

    Ampofo-Anti, Naalamkai

    2017-07-01

    Full Text Available . Figure 1: IBT delivery flowchart Proceedings 11th Built Environment Conference 6 th August – 8 th August 2017 Delivering construction projects using innovative building technologies Durban, South Africa 5. REFERENCES Ampofo-Anti, N...

  20. Prototypical Rod Construction Demonstration Project

    International Nuclear Information System (INIS)

    1993-05-01

    The objective of Phase 3 of the Prototypical Rod consolidation Demonstration Project (PRCDP) was to procure, fabricate, assemble, and test the Prototypical Rod consolidation System as described in the NUS Phase 2 Final Design Report. This effort required providing the materials, components, and fabricated parts which makes up all of the system equipment. In addition, it included the assembly, installation, and setup of this equipment at the Cold Test Facility. During the Phase 3 effort the system was tested on a component, subsystem, and system level. This volume 1, discusses the PRCDP Phase 3 Test Program that was conducted by the HALLIBURTON NUS Environmental Corporation under contract AC07-86ID12651 with the United States Department of Energy. This document, Volume 1, Book 3 discusses the following topics: Downender Test Results and Analysis Report; NFBC Canister Upender Test Results and Analysis Report; Fuel Assembly Handling Fixture Test Results and Analysis Report; and Fuel Canister Upender Test Results and Analysis Report

  1. 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.

  2. Knowledge Management Practice on Construction Project ...

    African Journals Online (AJOL)

    Likewise, the results further indicated 19 benefits of KM practice for improving construction project performance and include: improve project quality, cost and time; practice and process improvement; encourage effective teamwork and innovation; improve the client satisfaction; boost productivity of employees and processes; ...

  3. 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...

  4. 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.

  5. Bi-project management in engineering complex industrial construction projects

    NARCIS (Netherlands)

    Velde, Robert R. van der; Donk, Dirk Pieter van

    2000-01-01

    Engineering large industrial construction projects is usually a complex task with several co-operating actors. This paper investigates such projects, characterised by two main actors: the owner of the installation (the client organisation) responsible for the engineering of the production process,

  6. 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.

  7. 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...... Fixed Link construction project. Finally on this basis the concluding remarks are pointing to the main theoretical problems and their practical implementations for the introduction of a technology management discipline in construction....... in a schematic theoretical framework. Hereafter the general characteristics of construction are examined from the point of view of serving as an empirical field for technology management analysis. In the second section the technology management theme is associated with the empirical properties of the Great Belt...

  8. 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.

  9. Scenario evolution: Interaction between event tree construction and numerical analyses

    International Nuclear Information System (INIS)

    Barr, G.E.; Barnard, R.W.; Dockery, H.A.; Dunn, E.; MacIntyre, A.T.

    1990-01-01

    Construction of well-posed scenarios for the range of conditions possible at any proposed repository site is a critical first step to assessing total system performance. Event tree construction is the method that is being used to develop potential failure scenarios for the proposed nuclear waste repository at Yucca Mountain. An event tree begins with an initial event or condition. Subsequent events are listed in a sequence, leading eventually to release of radionuclides to the accessible environment. Ensuring the validity of the scenarios requires iteration between problems constructed using scenarios contained in the event tree sequence, experimental results, and numerical analyses. Details not adequately captured within the tree initially may become more apparent as a result of analyses. To illustrate this process, the authors discuss the iterations used to develop numerical analyses for PACE-90 (Performance Assessment Calculational Exercises) using basaltic igneous activity and human-intrusion event trees

  10. Waste diminution in Construction projects: Environmental Predicaments

    Science.gov (United States)

    Gharehbaghi, Koorosh; Scott-Young, Christina

    2018-03-01

    Waste diminution in construction projects is not only a behavioural issue, but also an energy consumption and reduction concern. With construction waste equating to the significant amount of exhausted energy together with increased pollution, this contributes to a series of environmental predicaments. The overall goal of construction solid Waste Management is to collect, treat and dispose of solid wastes generated by project activities in an environmentally and socially satisfactory manner, using the most economical means available. As cities expand, their construction activities and consumption patterns further drive up the solid waste quantities. Governments are usually authorized to have responsibility for providing solid Waste Management services, and various administrative laws give them exclusive ownership over the waste produced. In addition, construction waste processing can be further controlled and minimized according to specialized authorities such as Environmental Protection Agencies (EPA) and their relevant acts and regulations. Moreover, a Construction Environmental Management Plan (CEMP) can further control the treatment of waste and therefore, reduce the amount produced. Key elements of a CEMP not only include complying with relevant legislation, standards and guidance from the EPA; however, also to ensuring that there are systems in place to resolve any potential problems associated with site activities. Accordingly, as a part of energy consumption and lessening strategies, this paper will discuss various effective waste reduction methods for construction projects. Finally, this paper will also examine tactics to further improve energy efficiency through innovative construction Waste Management strategies (including desirability rating of most favourable options) to promote the lessening of overall CO2production.

  11. JET Project: progress in construction and management

    International Nuclear Information System (INIS)

    Bertolini, E.

    1978-01-01

    The JET Project of the European Community aims to construct and operate one of the largest Tokamak Devices foreseen at present in the field of Fusion Research. The aim of the experiment is to produce and study plasma conditions approaching those needed in a thermonuclear reactor and therefore will involve operation with deuterium--tritium gas

  12. Scenario evolution: Interaction between event tree construction and numerical analyses

    International Nuclear Information System (INIS)

    Barr, G.E.; Barnard, R.W.; Dockery, H.A.; Dunn, E.; MacIntyre, A.T.

    1991-01-01

    Construction of well-posed scenarios for the range of conditions possible at any proposed repository site is a critical first step to assessing total system performance. Even tree construction is the method that is being used to develop potential failure scenarios for the proposed nuclear waste repository at Yucca Mountain. An event tree begins with an initial event or condition. Subsequent events are listed in a sequence, leading eventually to release of radionuclides to the accessible environment. Ensuring the validity of the scenarios requires iteration between problems constructed using scenarios contained in the event tree sequence, experimental results, and numerical analyses. Details not adequately captured within the tree initially may become more apparent as a result of analyses. To illustrate this process, we discuss the iterations used to develop numerical analyses for PACE-90 using basaltic igneous activity and human-intrusion event trees

  13. 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, wh...... that accordingly theories must change with the process, that they are dissolving in praxis. Keywords: arrangement, common cause, concept, conflictual cooperation, contradictions, design of square, praxis, procedure, resources, theory....

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

    African Journals Online (AJOL)

    a project environment. Since projects are complicated, experience ... work, delays trigger cost overruns in construction projects (African. Development Bank ..... quantity surveying, contract management, and engineering. Table 4: Research ..... professionals at the business and operational levels of construction management.

  15. 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.

  16. 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.

  17. Lessons Learned from Past and Ongoing Construction Projects

    International Nuclear Information System (INIS)

    Tabatabai, Omid

    2011-01-01

    Full text of publication follows: The nuclear industry in the U.S. faced many construction quality and design issues in the 1970's and 1980's. In 1984, the NRC issued NUREG-1055, 'Improving Quality and the Assurance of Quality in the Design and Construction of Nuclear Power Plants,' to document the lessons learned from nuclear power plant (NPP) construction in the U.S. In recent years, several countries have begun either planning for or actually constructing new NPPs. For instance, in the U.S., the nuclear industry has submitted several combined license and design certification applications to the NRC for licensing reviews and approval to build 30+ new NPP units. Latest construction experience from countries that are currently building new NPPs indicate that these countries are dealing with challenges that are similar to those issues that caused major quality assurance problems, delays, or even termination of several projects in U.S. in the 70's and 80's. The U.S. NRC is pro-actively taking measures to improve its regulatory programs as well as construction oversight activities before new NPPs construction begin in the U.S. In late 2007, the U.S. NRC's Office of New Reactors established a construction experience program (ConE) to obtain and evaluate construction and operating experience events and to identify the lessons learned from these events. In March 2009, the NRC published an Office Instruction to provide a process for incorporating the lessons learned and insights from the design, construction, and operation of the international and domestic NPPs into the licensing reviews, inspections, and construction of new reactors in the U.S. Additionally, the ConE program staff developed a Web-enabled database to store, manage, and make construction experience information available to all NRC technical reviewers as well as inspectors. Because this database contains information from other countries' regulators that are considered

  18. 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.

  19. 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.

  20. 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...

  1. 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.

  2. Application of value engineering technique in construction project

    International Nuclear Information System (INIS)

    Chen Changbing

    2003-01-01

    The author introduces how to apply the theories and methods of the value engineering in construction project. In the construction of a test device of the thermal hydrodynamic process, the authors have greatly reduced the construction cost and shortened the construction period by using the value engineering analyzing method. The application of value engineering in the project management is innovative. This practice indicates that the value engineering is important in many construction projects

  3. Construction Managers’ Perception of the Factors Affecting Sustainability in Construction Projects

    OpenAIRE

    Reza Taheriattar; Morvarid Farzanehrafat

    2014-01-01

    Sustainable construction is a comprehensive concept which requires long-term planning. Moreover, construction managers play a key role in leading, planning and scheduling of a construction project. As a result, sustainability of construction projects can be affected by construction managers’ decisions. In addition, for greater development of sustainable construction, affecting factors should firstly be notified. Therefore, it seems necessary to investigate construction managers’ perception of...

  4. Nuclear power project construction quality acceptance standards Implementation and discussion

    International Nuclear Information System (INIS)

    Lai Shifu

    2013-01-01

    Project quality construction acceptance is an important element of nuclear power project quality management. Based on characteristics of NPP construction and refer to national construction quality acceptance code and industry regulation, this paper introduces and discusses NPP construction quality acceptance regulation improvement and implementation under current situation. (authors)

  5. Bayesian-network-based safety risk analysis in construction projects

    International Nuclear Information System (INIS)

    Zhang, Limao; Wu, Xianguo; Skibniewski, Miroslaw J.; Zhong, Jingbing; Lu, Yujie

    2014-01-01

    This paper presents a systemic decision support approach for safety risk analysis under uncertainty in tunnel construction. Fuzzy Bayesian Networks (FBN) is used to investigate causal relationships between tunnel-induced damage and its influential variables based upon the risk/hazard mechanism analysis. Aiming to overcome limitations on the current probability estimation, an expert confidence indicator is proposed to ensure the reliability of the surveyed data for fuzzy probability assessment of basic risk factors. A detailed fuzzy-based inference procedure is developed, which has a capacity of implementing deductive reasoning, sensitivity analysis and abductive reasoning. The “3σ criterion” is adopted to calculate the characteristic values of a triangular fuzzy number in the probability fuzzification process, and the α-weighted valuation method is adopted for defuzzification. The construction safety analysis progress is extended to the entire life cycle of risk-prone events, including the pre-accident, during-construction continuous and post-accident control. A typical hazard concerning the tunnel leakage in the construction of Wuhan Yangtze Metro Tunnel in China is presented as a case study, in order to verify the applicability of the proposed approach. The results demonstrate the feasibility of the proposed approach and its application potential. A comparison of advantages and disadvantages between FBN and fuzzy fault tree analysis (FFTA) as risk analysis tools is also conducted. The proposed approach can be used to provide guidelines for safety analysis and management in construction projects, and thus increase the likelihood of a successful project in a complex environment. - Highlights: • A systemic Bayesian network based approach for safety risk analysis is developed. • An expert confidence indicator for probability fuzzification is proposed. • Safety risk analysis progress is extended to entire life cycle of risk-prone events. • A typical

  6. Project and construction of a digital chronoanalyser

    International Nuclear Information System (INIS)

    Cavalcante, M.A.

    1983-01-01

    The project, the construction and the operation tests of a new electronic system for measuring half-lives of nuclear excited states in the range from 10 -7 to 10 -5 seconds are presented. The proposed method uses logic circuits of the TTL family. The time scale is obtained from a phase locked-loop quartz oscillator; the formation instant of excited state of interest is obtained by JK flip-flop through its negative transition edge. This system uses ten channels of frequency counters, controlled by logic gates, to measure successively gamma rays emitted between the instant of birth of an excited state and its de excitation time. The performance of system was verified by gamma ray decay from 137 Cs and 60 Co. (Author) [pt

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

    African Journals Online (AJOL)

    Journal Home > Vol 22, No 1 (2015) > ... Construction project managers in the built environment come from various backgrounds and knowledge bases; therefore, the project managers' project ... Industry-specific guidelines for construction project management (PMBOK and SACPCMP) were obtained and analysed.

  8. Constructions and classifications of projective Poisson varieties

    Science.gov (United States)

    Pym, Brent

    2018-03-01

    This paper is intended both as an introduction to the algebraic geometry of holomorphic Poisson brackets, and as a survey of results on the classification of projective Poisson manifolds that have been obtained in the past 20 years. It is based on the lecture series delivered by the author at the Poisson 2016 Summer School in Geneva. The paper begins with a detailed treatment of Poisson surfaces, including adjunction, ruled surfaces and blowups, and leading to a statement of the full birational classification. We then describe several constructions of Poisson threefolds, outlining the classification in the regular case, and the case of rank-one Fano threefolds (such as projective space). Following a brief introduction to the notion of Poisson subspaces, we discuss Bondal's conjecture on the dimensions of degeneracy loci on Poisson Fano manifolds. We close with a discussion of log symplectic manifolds with simple normal crossings degeneracy divisor, including a new proof of the classification in the case of rank-one Fano manifolds.

  9. Constructions and classifications of projective Poisson varieties.

    Science.gov (United States)

    Pym, Brent

    2018-01-01

    This paper is intended both as an introduction to the algebraic geometry of holomorphic Poisson brackets, and as a survey of results on the classification of projective Poisson manifolds that have been obtained in the past 20 years. It is based on the lecture series delivered by the author at the Poisson 2016 Summer School in Geneva. The paper begins with a detailed treatment of Poisson surfaces, including adjunction, ruled surfaces and blowups, and leading to a statement of the full birational classification. We then describe several constructions of Poisson threefolds, outlining the classification in the regular case, and the case of rank-one Fano threefolds (such as projective space). Following a brief introduction to the notion of Poisson subspaces, we discuss Bondal's conjecture on the dimensions of degeneracy loci on Poisson Fano manifolds. We close with a discussion of log symplectic manifolds with simple normal crossings degeneracy divisor, including a new proof of the classification in the case of rank-one Fano manifolds.

  10. Construction Project Leadership from the Perspective of Islam

    OpenAIRE

    MUHAMAD ROSDI SENAM; KHAIRUDDIN ABDUL RASHID; AZILA AHMAD SARKAWI; RAPIAH MOHD. ZAINI

    2014-01-01

    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 managem...

  11. Event-based soil loss models for construction sites

    Science.gov (United States)

    Trenouth, William R.; Gharabaghi, Bahram

    2015-05-01

    The elevated rates of soil erosion stemming from land clearing and grading activities during urban development, can result in excessive amounts of eroded sediments entering waterways and causing harm to the biota living therein. However, construction site event-based soil loss simulations - required for reliable design of erosion and sediment controls - are one of the most uncertain types of hydrologic models. This study presents models with improved degree of accuracy to advance the design of erosion and sediment controls for construction sites. The new models are developed using multiple linear regression (MLR) on event-based permutations of the Universal Soil Loss Equation (USLE) and artificial neural networks (ANN). These models were developed using surface runoff monitoring datasets obtained from three sites - Greensborough, Cookstown, and Alcona - in Ontario and datasets mined from the literature for three additional sites - Treynor, Iowa, Coshocton, Ohio and Cordoba, Spain. The predictive MLR and ANN models can serve as both diagnostic and design tools for the effective sizing of erosion and sediment controls on active construction sites, and can be used for dynamic scenario forecasting when considering rapidly changing land use conditions during various phases of construction.

  12. REVIEW ON CONSTRUCTION PROJECT MANAGEMENT SOFTWARE PRIMAVERA P6

    OpenAIRE

    Piyush Pramod Bagade* & Prof. Abhijit Bhirud

    2018-01-01

    Planning, scheduling and Resource levelling plays an important role in any construction project maybe it is construction of building or construction of road. In absence of proper planning, scheduling and resource levelling construction industry does not get profit over the project. For this purpose, proper software’s and techniques must be utilize. This paper is focussing on the advantages of Oracle Primavera P6 Software. The latest version of Primavera is P6-17. In any construction work huge...

  13. Knowledge Discovery in Data in Construction Projects

    Directory of Open Access Journals (Sweden)

    Szelka J.

    2016-06-01

    Full Text Available Decision-making processes, including the ones related to ill-structured problems, are of considerable significance in the area of construction projects. Computer-aided inference under such conditions requires the employment of specific methods and tools (non-algorithmic ones, the best recognized and successfully used in practice represented by expert systems. The knowledge indispensable for such systems to perform inference is most frequently acquired directly from experts (through a dialogue: a domain expert - a knowledge engineer and from various source documents. Little is known, however, about the possibility of automating knowledge acquisition in this area and as a result, in practice it is scarcely ever used. It has to be noted that in numerous areas of management more and more attention is paid to the issue of acquiring knowledge from available data. What is known and successfully employed in the practice of aiding the decision-making is the different methods and tools. The paper attempts to select methods for knowledge discovery in data and presents possible ways of representing the acquired knowledge as well as sample tools (including programming ones, allowing for the use of this knowledge in the area under consideration.

  14. 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…

  15. Projected changes of rainfall event characteristics for the Czech Republic

    Directory of Open Access Journals (Sweden)

    Svoboda Vojtěch

    2016-12-01

    Full Text Available Projected changes of warm season (May–September rainfall events in an ensemble of 30 regional climate model (RCM simulations are assessed for the Czech Republic. Individual rainfall events are identified using the concept of minimum inter-event time and only heavy events are considered. The changes of rainfall event characteristics are evaluated between the control (1981–2000 and two scenario (2020–2049 and 2070–2099 periods. Despite a consistent decrease in the number of heavy rainfall events, there is a large uncertainty in projected changes in seasonal precipitation total due to heavy events. Most considered characteristics (rainfall event depth, mean rainfall rate, maximum 60-min rainfall intensity and indicators of rainfall event erosivity are projected to increase and larger increases appear for more extreme values. Only rainfall event duration slightly decreases in the more distant scenario period according to the RCM simulations. As a consequence, the number of less extreme heavy rainfall events as well as the number of long events decreases in majority of the RCM simulations. Changes in most event characteristics (and especially in characteristics related to the rainfall intensity depend on changes in radiative forcing and temperature for the future periods. Only changes in the number of events and seasonal total due to heavy events depend significantly on altitude.

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

    OpenAIRE

    Alhaji Ali Zannah; Aryani Ahmad Latiffi; Abdulazeez Umar Raji; Abdullahi Abba Waziri; Usman Mohammed 4

    2017-01-01

    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 achie...

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

    OpenAIRE

    P.P.Mane; J.R.Patil

    2015-01-01

    The best quality, time and cost are the important aspects of successful construction project which fulfills the main goal of construction industry. 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. The role of quality management for a construction company is not an isolated activity, but intertwined with all the operational and managerial...

  18. 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 ...

  19. An examination of fuel consumption trends in construction projects

    International Nuclear Information System (INIS)

    Peters, Valerie A.; Manley, Dawn K.

    2012-01-01

    Recent estimates of fuel consumption in construction projects are highly variable. Lack of standards for reporting at both the equipment and project levels make it difficult to quantify the magnitude of fuel consumption and the associated opportunities for efficiency improvements in construction projects. In this study, we examined clusters of Environmental Impact Reports for seemingly similar construction projects in California. We observed that construction projects are not characterized consistently by task or equipment. We found wide variations in estimates for fuel use in terms of tasks, equipment, and overall projects, which may be attributed in part to inconsistencies in methodology and parameter ranges. Our analysis suggests that standardizing fuel consumption reporting and estimation methodologies for construction projects would enable quantification of opportunities for efficiency improvements at both the equipment and project levels. With increasing emphasis on reducing fossil fuel consumption, it will be important to quantify opportunities to increase fuel efficiency, including across the construction sector. - Highlights: ► An analysis of construction projects reveals inconsistencies in fuel use estimates. ► Fuel consumption estimates for similar construction equipment can vary greatly. ► Standards would help to quantify efficiency opportunities in construction.

  20. Client's Constraining Factors to Construction Project Management

    African Journals Online (AJOL)

    factors as a significant system that constrains project management success of public and ... finance for the project and prompt payment for work executed; clients .... consideration of the loading patterns of these variables, the major factor is ...

  1. 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.

  2. 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.

  3. 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.

  4. Development of Earned Value Management System in PP Construction Project

    Energy Technology Data Exchange (ETDEWEB)

    Lee, Sang-Hyun; Moon, Byeong-Suk [KHNP-CRI, Daejeon (Korea, Republic of)

    2014-10-15

    The NPP construction project has been determined in the form of a rather lump-sum contract with little details in resource requirements and estimations. Therefore, Earned Value Management System (EVMS) needs to be applied to the NPP projects in order to incorporate scope, schedule and cost targeting efficient and to control effective resource. The NPP projects in Korea have not applied EVMS. EVMS has phased in NPP construction project by Korea Hydro and Nuclear Power Co., Ltd (KHNP), playing the role of project master manager in NPP construction in Korea. This study presented the EVMS unlike other system. Accordingly, EVMS is expected to reduce risks and increase efficiency in the NPP project. The NPP construction project is a technology ntensive multi-construction project that should be based on economics and stability and that takes over ten years to complete, requiring investment of billions of dollars, a great number of persons concerned, and a vast store of human and material resources. KHNP is phasing EVMS in NPP construction project for overseas contracts and the efficient management, the paper presented the pilot EVMS in KHNP. It expected to control and identify of NPP construction projects by using EVMS as a computerized management tool which is quantitative and objective management criteria. It is necessary to improve of the contract system related EVM for enterprise system, and the effort will be required, such as on-site support and training so that this can be done in collaboration with the relevant stakeholders.

  5. Trevino Project: a fast-track approach for a small construction project

    International Nuclear Information System (INIS)

    Schick, C.J.; Lynn, N.S.

    1982-01-01

    The approach to a construction project can vary according to the size, location, and degree of difficulty associated with the project. This paper deals with one approach that can be taken to a small construction project, the fast-track approach. A small construction project can be defined as a project having less than $20 million capital cost or a project with a low degree of difficulty. This approach is very applicable to in-situ leaching uranium projects, small precious metal operations, etc. The approach to the small project is that of fast-tracking the project in order to minimize the time over which capital expenditure occurs and also to reduce the indirect costs of field expense, construction supplies, construction equipment, etc. In order to fast-track a project it is necessary to do a very precise job on the preliminary phases of the project such as preliminary engineering, plant site location, environmental permits, etc. 2 figures, 2 tables

  6. 7 CFR 1726.403 - Project construction contract closeout.

    Science.gov (United States)

    2010-01-01

    ... 7 Agriculture 11 2010-01-01 2010-01-01 false Project construction contract closeout. 1726.403... § 1726.403 Project construction contract closeout. This section is applicable to contracts executed on... American” certificate. (iii) RUS Form 224, Waiver and Release of Lien, from each manufacturer, supplier...

  7. 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.

  8. 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 ...

  9. 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

  10. 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....

  11. 42 CFR 137.327 - May multiple projects be included in a single construction project agreement?

    Science.gov (United States)

    2010-10-01

    ... 42 Public Health 1 2010-10-01 2010-10-01 false May multiple projects be included in a single construction project agreement? 137.327 Section 137.327 Public Health PUBLIC HEALTH SERVICE, DEPARTMENT OF...-GOVERNANCE Construction Project Assumption Process § 137.327 May multiple projects be included in a single...

  12. 78 FR 18348 - Submission for OMB Review; Use of Project Labor Agreements for Federal Construction Projects

    Science.gov (United States)

    2013-03-26

    ...: There is no existing Governmentwide data base that collects PLAs and specifically the number submitted... Project Labor Agreements for Federal Construction Projects AGENCY: Department of Defense (DOD), General... information collection requirement regarding Use of Project Labor Agreements for Federal Construction Projects...

  13. Construction project investment control model based on instant information

    Institute of Scientific and Technical Information of China (English)

    WANG Xue-tong

    2006-01-01

    Change of construction conditions always influences project investment by causing the loss of construction work time and extending the duration. To resolve such problem as difficult dynamic control in work construction plan, this article presents a concept of instant optimization by ways of adjustment operation time of each working procedure to minimize investment change. Based on this concept, its mathematical model is established and a strict mathematical justification is performed. An instant optimization model takes advantage of instant information in the construction process to duly complete adjustment of construction; thus we maximize cost efficiency of project investment.

  14. The study of the risk management model of construction project

    International Nuclear Information System (INIS)

    Jiang Bo; Feng Yanping; Liu Changbin

    2010-01-01

    The paper first analyzed the development of the risk management of construction project and the risk management processes, and then briefly introduced the risk management experience of foreign project management. From the project management by objectives point of view, the greatest risk came from the lack of clarity of the objectives in the project management, which led to the project's risk emergence. In the analysis of the principles of the project objectives identification and risk allocation, the paper set up a project management model which insurance companies involved in the whole process of the project management, and simply analyzed the roles of insurance company at last. (authors)

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

    OpenAIRE

    Ngah Nasaruddin Nur Ain; Abdul Rahman Ismail

    2016-01-01

    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. ...

  16. 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.

  17. 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.

  18. Global Database of Events, Language, and Tone (GDELT Project)

    Data.gov (United States)

    World Wide Human Geography Data Working Group — The Global Database of Events, Language, and Tone (GDELT Project) monitors the world's broadcast, print, and web news from nearly every corner of every country in...

  19. Conjoint utility analysis of technical maturity and project progress of construction project

    Directory of Open Access Journals (Sweden)

    Ma Wei

    2016-01-01

    Full Text Available In this paper, taking construction project as the research object, the relationship between the project maturity index calculated by the construction project technical risks with different fine degree and the project progress index is studied, and the equilibrium relationship between the Party A’s utility curve and the Party B’s cost curve of using project maturity index and project progress index as the research variables is analyzed. The results show that, when the construction project technical risk division is more precise, the conjoint utility of the project's technical maturity index and the project progress is higher, and the project’s Party A and Party B two sides are closer to the optimal equilibrium. This shows that the construction project technical risk must be finely divided, and managed and controlled respectively, which will help to improve the conjoint utility of the project Party A and Party B two sides.

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

    African Journals Online (AJOL)

    Impact of Construction Health & Safety Regulations on Project Parameters in Nigeria: Consultants and Contractors View. ... The study recommends that better attention is given to health and safety should as a project parameter and that related practice notes and guidelines should be evolved for all project stakeholders.

  1. Project Structuring and Risk Allocation for NPP Construction

    International Nuclear Information System (INIS)

    Kaser, Greg

    2013-01-01

    This presentation treats of the project risks and how to mitigate major risks and structure a new project. It also talks about the contract implications to handle the specificities of a new project: design complexities, interface between the engineering, procurement and constructing contractors, and finally discusses the necessity of a stable regulatory environment and the role of government

  2. Case studies of selected Project "Flash" events

    Directory of Open Access Journals (Sweden)

    K. A. Nicolaides

    2009-03-01

    Full Text Available Flooding is a consequence of the prevailing meteorological situation, the intensity and duration of precipitation, geomorphology, human activities over a geographical region and other factors. Floods result in damage and destruction of infrastructure and private property and, in some cases, in fatalities. Flash floods are sudden and quite localized in extend, characterized by excessive amounts of rainfall within a short period of time and are distinguished from other floods by their degree of severity. The broader knowledge concerning flash floods is useful for the better understanding of the underlying thermodynamic and dynamic mechanisms, as well as the associated physical processes. The wider understanding of flashfloods can form part of an integrated system for short and very short forecasting of these events. In the present study, the synoptic, dynamic and thermodynamic conditions during the development of a baroclinic depression which affected the area of Cyprus on 6 November 2005 are studied. The depression was associated with extreme weather phenomena, such as thunderstorms, a water spout and high precipitation accumulations. The results indicate the importance of the dynamic parameters in the system's development and the thermodynamic analysis has shown the convective potential of the atmosphere.

  3. Factors influencing cost over-run in Indian construction projects

    Directory of Open Access Journals (Sweden)

    Cindrela Devi A.

    2017-01-01

    Full Text Available Construction cost is the most important criteria of project success and hence the construction project performance is generally expressed in terms of cost and its variance from the budget. In spite of having extant literature, cost estimation methods, cost indices etc., construction projects rarely meet the budgeted cost. This research study focuses on the construction cost overrun and to identify the various factors that affects the construction cost performance. Based on an extensive literature review and input from industry experts, sixty eight factors that causes cost overrun were identified for investigation. Further, a structured questionnaire survey was conducted among the industry experts and the collected data has been analysed statistically. It is concluded that the factors namely scope creep, construction delays, rework and practise of awarding the contract to the lowest bidder are most significant factors for construction cost overrun in non-infrastructural Indian projects. The relative importance of the listed factors used to guide the project team in addressing the cost related risks involved in the projects. The findings are expected to bridge the gap in the current construction cost management practices.

  4. Influential Factors Affecting Materials Management in Construction Projects

    Directory of Open Access Journals (Sweden)

    Jusoh Zairra Mat

    2017-12-01

    Full Text Available Construction projects are more often than not plagued by poor performances such as delays, cost overrun, low productivity, construction wastes and compromised quality. Amongst the critical contributory factors of poor project performances, is the ineffectiveness of materials management occurring in the construction sites. Indeed, materials management is a very important component for construction projects. However, there are only limited numbers of research available regarding this topic. Thus, this research focuses its study on materials management, specifically in identifying the influential factors that affect materials management in the construction project activities. Literatures from books, journal articles and conference papers related to poor project performances and materials management have been reviewed. Consequently, this study sorted the salient influential factors and categorized them based on their specific group. Out of 47 factors identified, they are classified into 8 groups. They are (1 site condition; (2 planning and handling on site; (3 management; (4 materials; (5 supplier and manufacturer default; (6 transportation; (7 contractual; and (8 governmental interferences. In conclusion, this study contends that by identifying the influential factors affecting materials management, it will help construction players to avoid the occurrence of those factors and will minimize the negative impacts on the overall performance of construction projects. Hence, the handling-over of project will be according to schedule and not delayed by materials mismanagement.

  5. Appendix VI: KHNP staffing plan of construction site office: ULCHIN 5 and 6 construction project (ROK)

    International Nuclear Information System (INIS)

    2008-01-01

    KHNP, as an owner/operator organization, is responsible for all project activities including design, procurement, construction, and commissioning, for Korea's nuclear power plant (NPP) construction projects. Four separate functional offices of KHNP are set up to complete the construction management work. These offices are (1) home office, (2) field construction office, (3) field quality assurance office, and (4) field startup/commissioning office. This paper presents a staffing plan for the field construction office starting initial project implementation to final turnover to operations stages. It is recognized that the plan may not be applicable to other utility situations in terms of project management of site activity depending upon how the overall project contract is structured

  6. 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.

  7. 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…

  8. CLAIMS IN INTERNATIONAL CONSTRUCTION PROJECTS IN ...

    African Journals Online (AJOL)

    The most significant effect-of claims in international projects in Ethiopia has ... however, do not accept the decision of the Engineer, then an .... The original design of the roof framing for the ..... have experienced tIus problem making it a prime.

  9. Construction of special structures for nuclear power projects

    International Nuclear Information System (INIS)

    Raghavan, N.

    2003-01-01

    Construction is a very important stage in the course of realization of Nuclear Power Projects and as much care has be devoted to this stage as to the planning and engineering stages. While the setting up of nuclear power projects used to take over seven years in the past, the time period has now been considerably reduced to about five years with advancements in construction engineering, project management and design techniques, on the basis of new initiatives from the owner agency, Nuclear Power Corporation of India. In this article, the constructional aspects of the specialized structures for nuclear power generation are looked into. (author)

  10. Portfolio management for investment projects in the construction industry

    Directory of Open Access Journals (Sweden)

    Kozlov Alexander

    2017-01-01

    Full Text Available The Russian business community has realized the need for project/targeted programme management procedures; therefore, the demand for customized project-oriented management methods goes up. In the meantime, this demand is not supplied in full, and the supply is far from being efficient. Project management methodologies need further improvement, including development of portfolio management processes applicable to investment projects developed and implemented in the construction industry. The article considers General approaches to the formalization of the management of portfolios of investment–construction projects. For the main groups of processes portfolio management (“Formation and alignment”, “Monitoring and control” and “Support and development” deals with their constituent sub-processes. The proposed decomposition can be used for both portfolio construction and investment projects and also has an invariant character, which allows extending the proposed approaches to other system target–oriented and project–oriented management.

  11. Cost diviation in road construction projects: The case of Palestine

    Directory of Open Access Journals (Sweden)

    Ibrahim Mahamid

    2012-02-01

    Full Text Available This paper investigates the statistical relationship between actual and estimated cost of road construction projects using data from road construction projects awarded in the West Bank in Palestine over the years 2004–2008. The study is based on a sample of 169 road construction projects. Based on this data, regression models are developed. The findings reveal that 100% of projects suffer from cost diverge, it is found that 76% of projects have cost under estimation while 24% have cost over estimation. The discrepancy between estimated and actual cost has an average of 14.6%, ranging from -39% to 98%. The relation between the project size (length and width and the cost diverge is discussed.

  12. 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

  13. [Adverse events management. Methods and results of a development project].

    Science.gov (United States)

    Rabøl, Louise Isager; Jensen, Elisabeth Brøgger; Hellebek, Annemarie H; Pedersen, Beth Lilja

    2006-11-27

    This article describes the methods and results of a project in the Copenhagen Hospital Corporation (H:S) on preventing adverse events. The aim of the project was to raise awareness about patients' safety, test a reporting system for adverse events, develop and test methods of analysis of events and propagate ideas about how to prevent adverse events. H:S developed an action plan and a reporting system for adverse events, founded an organization and developed an educational program on theories and methods of learning from adverse events for both leaders and employees. During the three-year period from 1 January 2002 to 31 December 2004, the H:S staff reported 6011 adverse events. In the same period, the organization completed 92 root cause analyses. More than half of these dealt with events that had been optional to report, the other half events that had been mandatory to report. The number of reports and the front-line staff's attitude towards reporting shows that the H:S succeeded in founding a safety culture. Future work should be centred on developing and testing methods that will prevent adverse events from happening. The objective is to suggest and complete preventive initiatives which will help increase patient safety.

  14. Construction Project Performance Improvement through Radio Frequency Identification Technology Application on a Project Supply Chain

    Science.gov (United States)

    Wang, Heng

    2017-01-01

    Construction project productivity typically lags other industries and it has been the focus of numerous studies in order to improve the project performance. This research investigated the application of Radio Frequency Identification (RFID) technology on construction projects' supply chain and determined that RFID technology can improve the…

  15. 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.

  16. 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.

  17. Construction of hydroelectric project generation: Focuses of the option value

    International Nuclear Information System (INIS)

    Villegas P, Clara Ines

    2002-01-01

    Work present work aims at the development of an analysis, that using the option value approach allows finding the optimal moment (from the environmental point of view), for the construction of an electrical project generation in a zone with determined environmental characteristics. The construction of the project, constitutes an irreversible decision and with uncertainty associated. The evolution of the environmental damage of the zone can be attracting through the variable C of environmental damage. The analysis developed here allows the characterization of a rule (or a barrier of environmental damage called C, which determines when, is optimal to construct the generation project or to conserve the ecosystems of the zone of location. Over this barrier, the construction of the project becomes optimal and below her the conservation of the ecosystems of the zone is privileged

  18. 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.

  19. 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

  20. The impact of project management on nuclear construction lead times

    International Nuclear Information System (INIS)

    Radlaver, M.A.; Bauman, D.S.; Chapel, S.W.

    1985-01-01

    A two-year study of lead times for nuclear power plants found that construction time is affected by six fundamental influences. One of the six is project management. An analysis of construction management teams at 26 nuclear units found that many of the most successful shared five general characteristics: nuclear power experience, skill in project control, adaptability and initiative, commitment to success, and communication and coordination skill

  1. 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....

  2. 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.

  3. 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.

  4. Planning construction of integrative schedule management for nuclear power project

    International Nuclear Information System (INIS)

    Zeng Zhenglin; Wang Wenying; Peng Fei

    2012-01-01

    This paper introduces the planning construction of integrative schedule management for Nuclear Power Project. It details schedule management system and the requirement of schedulers and the mode of three schedule management flats. And analysis it combing with the implementation of construction water and all special schedules before FCD to further propose the improving and researching direction for the integrative schedule management. (authors)

  5. 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

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

    African Journals Online (AJOL)

    participants, including contractors, quantity surveyors, project managers, architects, and ..... (2004: 1) report that the global construction industry is plagued with ..... 1.2. Construction consultant/Developer. 2. 1.2. Engineering. 2. 1.2. Logistics. 2. 1.2 ...... supplychain/PPPFA%20-%20media.pdf> [Accessed: 2 June 2011].

  7. 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.

  8. Assessing the costs attributed to project delay during project pre-construction stages.

    Science.gov (United States)

    2016-03-01

    This project for the Texas Department of Transportation (TxDOT) developed a simple but sound : methodology for estimating the cost of delaying most types of highway projects. Researchers considered the : cost of delays during the pre-construction pha...

  9. 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 ...

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

    Indian Academy of Sciences (India)

    Swapnil P Wanjari

    Cost overrun in India; ANOVA; factor analysis; construction projects. 1. Introduction ... gramme Implementation in India [2], projects of public .... case if a respondent never came across of such factor. ..... The co-relation matrix for variables of cost overruns was ..... There are various problems observed due to communication.

  11. 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 ...

  12. A new framework for construction project definition stage

    DEFF Research Database (Denmark)

    Pikas, Ergo; Oehmen, Josef; Koskela, Lauri

    2018-01-01

    One major reason for the poor performance of construction project delivery is related to the 'ill'- performed project definition stage. The emphasis on rational decision-making and methods have stifled the creativity important to problem structuring and solution generation. Problem is in the poor...

  13. 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

  14. Financial and organizational models of NPP construction projects

    International Nuclear Information System (INIS)

    Ivanov, Timur

    2010-01-01

    The recent evolution of financial and organizational models of NPP projects can be truly reputed to open a new page of the world market of NPP construction. The definition of the concrete model is based mostly on specific cooperation backgrounds and current terms and conditions under which the particular NPP project is being evolved. In this article the most commonly known strategies and schemes of financing structuring for export NPP construction projects are scrutinized. Special attention is paid to the analysis of BOO/BOT models which are based on the public-private partnership. Most BOO/BOT projects in the power sector has Power Purchase Agreements (PPA) as an integral part of them. The PPA key principles are studied here as well. The flexibility and adaptability of the public-private partnership models for financing and organization of the NPP projects contributes substantially to the competitiveness of the NPP projects especially under current economic conditions. (orig.)

  15. 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.

  16. 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.

  17. Project for construction of a new nuclear unit in Armenia

    International Nuclear Information System (INIS)

    2010-01-01

    WorleyParsons Project Description Scope of work: Management Services for Implementation of the Project on Construction of New Nuclear Unit(s) in the Republic of Armenia. Client: Ministry of Energy and Natural Resources (MENR), Republic of Armenia •Contract signed on 29 of May 2009 •Project divided into 4 Phases. Addendum 1 covers phase I and II signed on 27 of July. Contract entered into force 7 of August

  18. Project assessment for construction of new nuclear facility

    International Nuclear Information System (INIS)

    2013-01-01

    Project risk management is an important and integral part of project and quality management. It is also a key part of the due diligence process in making informed project decisions where in addition to the qualitative assessments quantitative ones shall be used to the extend practical. As part of the risk management process, risk identification, evaluation and mitigation must be an on-going activity at senior management levels throughout the planning, design, construction and commissioning phases of a new NPP

  19. Categorization of potential project cost overrun factors in construction industry

    Science.gov (United States)

    Karunakaran, P.; Abdullah, A. H.; Nagapan, S.; Sohu, S.; Kasvar, K. K.

    2018-04-01

    Cost overrun has been severely hit down the economy and reputations for many construction industry around the world. Many project management tools developed to control the budget of a project. However, the cost management is still considered poor as there are many cost overrun issues occurred in the construction industry. Thus, this paper aims to identify and cluster the potential construction project cost overrun factors according to their originating groups using the thematic approach. Basically, through literature review, all the potential factors that may cause cost overrun were screened thoroughly before they were clustered into seven (7) groups of the originating factors, namely project, contract, client, contractor, consultant, labour and external. Each potential factor was explained clearly with some examples based on the Malaysian case studies to illustrate the cost overrun scenario. These findings may aid in the future to highlight on how to mitigate the critical potential factors of cost overrun to reduce or overcome its impact on all the stakeholders involved.

  20. 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.

  1. A study for EVMS application to NPP construction project

    International Nuclear Information System (INIS)

    Roh, M. S.; Kwak, J. K.

    2016-01-01

    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

  2. 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.

  3. Management and marketing of sporting events: Nike Premier Cup Project

    OpenAIRE

    Nedbal, Jakub

    2008-01-01

    Title: Management and marketing ofsporting events: Nike Premier Cup project Points of thesis: Publish the Nike Premier Cup promotion campaign project and point out improvement possibilities for upcoming years based on analysis ofpast and present state. Methods: Data will be obtained by interview, observation, description analysis and SWOT analysis Results: Promotion campaign, improvement possibilities, final day schedule Keywords: SWOT analysis, promotion, management, marketing, Nike Premier ...

  4. 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.

  5. Construction Project Success ranking through the Data Envelopment Analysis

    Directory of Open Access Journals (Sweden)

    Mazyar Zahedi-Seresht

    2014-09-01

    Full Text Available The purpose of this paper is to rank construction projects' success in a post delivery phase. To attain this objective, a data envelopment analysis (DEA approach is used. The model's output is a project success index which is calculated based on five project success criteria. These criteria which are determined by a two-round Delphi questionnaire survey are time performance, cost performance, quality, HSE, and customer satisfaction. The input factors which have effects on the output measures are Organizational Sponsorship, Project Manager Competency, Customer Organization, Project Operational Environment and Organizational Experience. The tool adopted to determine these factors is questionnaire. This model is applied for 9 projects with different importance of output and input factors and the reasonable result is achieved for ranking these projects.

  6. Hacking events. Project development practices and technology use at hackathons

    NARCIS (Netherlands)

    Richterich, Annika

    2017-01-01

    Hackathons are techno-creative events during which participants get together in a physical location. They may be hosted by civic communities, corporations or public institutions. Working individually or in teams, usually for several days, participants develop projects such as hardware or software

  7. 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.

  8. The Construction of Macro-events. A typological perspective

    DEFF Research Database (Denmark)

    Pedersen, Johan

    2009-01-01

    languages. The discussion originates in a contrastive analysis of a short story by H. C. Andersen available in six parallel versions: the original Danish version, an English, a German, a Spanish, an Italian and a French version. The paper argues that the generalized version of the typology (Talmy 1991, 2000....... Constructions of the main information (MIC) and the supportive information (SIC), of varying degree of specificity, are the basic constituents of the typology. From this point of view, Germanic languages tend to map the main information (MI) onto a complex schematic construction and the supportive information...... (SI) onto a lexical (verbal) construction. Romance languages tend to map the MI onto the verb, while the SI may be mapped onto a complex schematic construction. The paper hypothesizes that MIC and SIC stem from generalizations from usage, that they have their own, procedural role in grammar...

  9. Incentive Model Based on Cooperative Relationship in Sustainable Construction Projects

    Directory of Open Access Journals (Sweden)

    Guangdong Wu

    2017-07-01

    Full Text Available Considering the cooperative relationship between owners and contractors in sustainable construction projects, as well as the synergistic effects created by cooperative behaviors, a cooperative incentive model was developed using game theory. The model was formulated and analyzed under both non-moral hazard and moral hazard situations. Then, a numerical simulation and example were proposed to verify the conclusions derived from the model. The results showed that the synergistic effect increases the input intensity of one party’s resource transfer into the increase of marginal utility of the other party, thus the owner and contractor are willing to enhance their levels of effort. One party’s optimal benefit allocation coefficient is positively affected by its own output efficiency, and negatively affected by the other party’s output efficiency. The effort level and expected benefits of the owner and contractor can be improved by enhancing the cooperative relationship between the two parties, as well as enhancing the net benefits of a sustainable construction project. The synergistic effect cannot lower the negative effect of moral hazard behaviors during the implementation of sustainable construction projects. Conversely, the higher levels of the cooperative relationship, the wider the gaps amongst the optimal values under both non-moral hazard and moral hazard situations for the levels of effort, expected benefits and net project benefits. Since few studies to date have emphasized the effects of cooperative relationship on sustainable construction projects, this study constructed a game-based incentive model to bridge the gaps. This study contributes significant theoretical and practical insights into the management of cooperation amongst stakeholders, and into the enhancement of the overall benefits of sustainable construction projects.

  10. Effectiveness of Quality Management System (QMS) on Construction Projects

    OpenAIRE

    Behnam Neyestani

    2016-01-01

    Quality management system (QMS) provides generic guidance and requirements for establishing an appropriate quality management procedure, in order to lower cost, increase productivity, customer's satisfaction, and market share in the organizations since the last two-decade. In construction industry, it can assist the companies to achieve successfully their objectives, and ensure that all phases of construction project consistently meet client's requirements (need). The main aim of this article...

  11. 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.

  12. 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.

  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. 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

  15. 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

  16. An Agent Based Approach for Project Management in Construction

    OpenAIRE

    Sencer, Safiye; Turgay, Tahsin

    2013-01-01

    Project management has an important role in terms of time, cost and flexibility. An agentbased architecture provides additional robustness, scalability, flexibility that is particularly appropriate for problems with a dynamic and distributed nature. Integrated agent based project management covers design and construction planning. It is combined with plan execution, tolerating both the design and plan, which may be changed as necessary. In this reason, the decision making process requires tha...

  17. Design basis event consequence analyses for the Yucca Mountain project

    International Nuclear Information System (INIS)

    Orvis, D.D.; Haas, M.N.; Martin, J.H.

    1997-01-01

    Design basis event (DBE) definition and analysis is an ongoing and integrated activity among the design and analysis groups of the Yucca Mountain Project (YMP). DBE's are those that potentially lead to breach of the waste package and waste form (e.g., spent fuel rods) with consequent release of radionuclides to the environment. A Preliminary Hazards Analysis (PHA) provided a systematic screening of external and internal events that were candidate DBE's that will be subjected to analyses for radiological consequences. As preparation, pilot consequence analyses for the repository subsurface and surface facilities have been performed to define the methodology, data requirements, and applicable regulatory limits

  18. Methodology of project management at implementation of projects of high-rise construction

    Science.gov (United States)

    Papelniuk, Oksana

    2018-03-01

    High-rise construction is the perspective direction in urban development. An opportunity to arrange on rather small land plot a huge number of the living and commercial space makes high-rise construction very attractive for developers. However investment projects of high-rise buildings' construction are very expensive and complex that sets a task of effective management of such projects for the company builder. The best tool in this area today is the methodology of project management, which becomes a key factor of efficiency.

  19. 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.

  20. Tool for Constructing Data Albums for Significant Weather Events

    Science.gov (United States)

    Kulkarni, A.; Ramachandran, R.; Conover, H.; McEniry, M.; Goodman, H.; Zavodsky, B. T.; Braun, S. A.; Wilson, B. D.

    2012-12-01

    Case study analysis and climatology studies are common approaches used in Atmospheric Science research. Research based on case studies involves a detailed description of specific weather events using data from different sources, to characterize physical processes in play for a given event. Climatology-based research tends to focus on the representativeness of a given event, by studying the characteristics and distribution of a large number of events. To gather relevant data and information for case studies and climatology analysis is tedious and time consuming; current Earth Science data systems are not suited to assemble multi-instrument, multi mission datasets around specific events. For example, in hurricane science, finding airborne or satellite data relevant to a given storm requires searching through web pages and data archives. Background information related to damages, deaths, and injuries requires extensive online searches for news reports and official storm summaries. We will present a knowledge synthesis engine to create curated "Data Albums" to support case study analysis and climatology studies. The technological challenges in building such a reusable and scalable knowledge synthesis engine are several. First, how to encode domain knowledge in a machine usable form? This knowledge must capture what information and data resources are relevant and the semantic relationships between the various fragments of information and data. Second, how to extract semantic information from various heterogeneous sources including unstructured texts using the encoded knowledge? Finally, how to design a structured database from the encoded knowledge to store all information and to support querying? The structured database must allow both knowledge overviews of an event as well as drill down capability needed for detailed analysis. An application ontology driven framework is being used to design the knowledge synthesis engine. The knowledge synthesis engine is being

  1. causes of conflicts in construction projects in nigeria

    African Journals Online (AJOL)

    user

    NIGERIA. 2 DEPARTMENT OF ARCHITECTURE AND CIVIL ENGINEERING, CITY ... Thus, this study was aimed at identifying and assessing causes of conflicts in Nigeria .... technical specification, government intervention, ..... scale construction projects: A case study,” Constr. ... study of Bygga Villa, a Swedish triple helix e-.

  2. The use of interorganisational ICT in United States construction projects

    NARCIS (Netherlands)

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

    2010-01-01

    In recent research, the use of ICT applications in real time construction projects have been documented and analysed extensively. However, there is a need for identifying and analysing in-depth the mechanisms influencing the use of interorganisational ICT applications and for solutions to eliminate

  3. A Model Suggestion to Predict Leverage Ratio for Construction Projects

    Directory of Open Access Journals (Sweden)

    Özlem Tüz

    2013-12-01

    Full Text Available Due to the nature, construction is an industry with high uncertainty and risk. Construction industry carries high leverage ratios. Firms with low equities work in big projects through progress payment system, but in this case, even a small negative in the planned cash flows constitute a major risk for the company.The use of leverage, with a small investment to achieve profit targets large-scale, high-profit, but also brings a high risk with it. Investors may lose all or the portion of the money. In this study, monitoring and measuring of the leverage ratio because of the displacement in cash inflows of construction projects which uses high leverage and low cash to do business in the sector is targeted. Cash need because of drifting the cash inflows may be seen due to the model. Work should be done in the early stages of the project with little capital but in the later stages, rapidly growing capital need arises.The values obtained from the model may be used to supply the capital held in the right time by anticipating the risks because of the delay in cashflow of construction projects which uses high leverage ratio.

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

    NARCIS (Netherlands)

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

    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

  5. 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.

  6. 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

  7. 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.

  8. 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...

  9. Construction project of Flamanville 3 NPP. The participation of Iberdrola engineering and Construction

    International Nuclear Information System (INIS)

    Diaz Prada, J. I.; Cubian, B.

    2014-01-01

    Iberdrola Engineering and Construction (IIC) leads several projects mini EPC for the EPR Flamanville 3 NPP for providing important for safety components and auxiliary systems in the pump house and in the turbine island. The realization of this new nuclear project has been a challenge from the technical and organizational perspective because the plant is the first of the new nuclear station (FDAKE) type EPR 1700 MWe series in a highly restrictive environment due to to the large number of particular requirements from the final customer and the meager degree of progress of the design to the date of commencement of construction. (Author)

  10. Projected changes of rainfall event characteristics for the Czech Republic

    Czech Academy of Sciences Publication Activity Database

    Svoboda, V.; Hanel, M.; Máca, P.; Kyselý, Jan

    2016-01-01

    Roč. 64, č. 4 (2016), s. 415-425 ISSN 0042-790X R&D Projects: GA ČR(CZ) GA14-18675S Institutional support: RVO:68378289 Keywords : rainfall event * hourly rainfall * regional climate model * climate change Subject RIV: DG - Athmosphere Sciences, Meteorology Impact factor: 1.654, year: 2016 https://www.degruyter.com/view/j/johh.2016.64.issue-4/johh-2016-0036/johh-2016-0036.xml

  11. A status report on the PBFA II construction project

    International Nuclear Information System (INIS)

    Barr, G.W.; Furaus, J.P.; Cook, D.L.; Shirley, C.G.

    1985-01-01

    The Particle Beam Fusion Accelerator II (PBFA II) is under construction at Sandia National Laboratories (SNL). PBFA II contains 36 individual power modules configured in a stacked radial geometry and synchronized to provide greater than 3.5 MJ of energy into the vacuum section in a single 55-ns-wide 90-TW peak power pulse. This R and D construction project is being implemented in a fast track schedule mode in which final design of the accelerator components occurs in parallel with the construction of the laboratory building and the accelerator tank. PBFA II is scheduled to become operational in January 1986 with its first multi-module shot into an applied-B ion diode that will generate and transport a beam of lithium ions. Plans are now being made for experimental work on PBFA II beyond the construction phase

  12. CONSTRUCTION PROJECTS VERSUS THE PROTECTION OF NATURE AND ENVIRONMENT

    Directory of Open Access Journals (Sweden)

    Elżbieta Hanna Szafranko

    2017-02-01

    Full Text Available Construction investments are related to the economic development of each country. Expansion of towns and settlements, construction, industrial, commercial and recreational objects and the communication network is necessary and results from regional development strategies. For their implementation it is necessary to prepare the area designated for their development. In many regions of our country area suitable for construction are increasingly limited, and furthermore investors often looks for an attractive investment location. For this reason, more and more construction projects dangerously close to areas of high natural value and protected and often are entering the these areas. To minimize the negative investment impact on the environment there are developed several variants of investment. Next, assessing the positive and negative effects, we choose the best, from the point of view of the surrounding environment solution. To illustrate the procedure example of analysis using the method proposed by the author, the indicator is shown.

  13. Anomalies and contradictions in an airport construction project: a historical analysis based on Cultural-Historical Activity Theory.

    Science.gov (United States)

    Lopes, Manoela Gomes Reis; Vilela, Rodolfo Andrade de Gouveia; Querol, Marco Antônio Pereira

    2018-02-19

    Large construction projects involve the functioning of a complex activity system (AS) in network format. Anomalies such as accidents, delays, reworks, etc., can be explained by contradictions that emerge historically in the system. The aim of this study was to analyze the history of an airport construction project to understand the current contradictions and anomalies in the AS and how they emerged. A case study was conducted for this purpose, combining Collective Work Analysis, interviews, observations, and analysis of documents that provided the basis for sessions in the Change Laboratory, where a participant timeline was elaborated with the principal events during the construction project. Based on the timeline, a historical analysis of the airport's AS revealed critical historical events and contradictions that explained the anomalies that occurred during the project. The analysis showed that the airport had been planned for construction with politically determined deadlines that were insufficient and inconsistent with the project's complexity. The choice of the contract modality, which assigned responsibility to a joint venture for all of the project's phases, was another critical historical event, because it allowed launching the construction before a definitive executive project had been drafted. There were also different cultures in companies working together for the first time in the context of a project with time pressures and outsourcing of activities without the necessary coordination. Identifying these contradictions and their historical origins proved essential for understanding the current situation and efforts to prevent similar situations in the future.

  14. 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.

  15. Intelligent Materials Tracking System for Construction Projects Management

    Directory of Open Access Journals (Sweden)

    Narimah Kasim

    2015-05-01

    Full Text Available An essential factor adversely affecting the performance of construction projects is the improper handling of materials during site activities. In addition, paper-based reports are mostly used to record and exchange information related to the material components within the supply chain, which is problematic and inefficient. Generally, technologies (such as wireless systems and RFID are not being adequately used to overcome human errors and are not well integrated with project management systems to make tracking and management of materials easier and faster. Findings from a literature review and surveys showed that there is a lack of positive examples of such tools having been used effectively. Therefore, this research focused on the development of a materials tracking system that integrates RFID-based materials management with resources modelling to improve on-site materials tracking. Rapid prototyping was used to develop the system and testing of the system was carried out to examine the functionality and working appropriately. The proposed system is intended to promote the employment of RFID for automatic materials tracking with integration of resource modelling (Microsoft (R Office Project in the project management system in order to establish which of the tagged components are required resources for certain project tasks. In conclusion, the system provides an automatic and easy tracking method for managing materials during materials delivery and inventory management processes in construction projects.

  16. 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.

  17. Application of ABWR construction database to nuclear power plant project

    International Nuclear Information System (INIS)

    Takashima, Atsushi; Katsube, Yasuhiko

    1999-01-01

    Tokyo Electric Power Company (TEPCO) completed the construction of Kashiwazaki-Kariwa Nuclear Power Station Unit No. 6 and No. 7 (K-6/7) as the first advanced boiling water reactors (ABWR) in the world successfully. K-6 and K-7 started their commercial operations in November, 1996 and in July, 1997 respectively. We consider ABWR as a standard BWR in the world as well as in Japan because ABWR is highly reputed. However, because the interval of our nuclear power plant construction is going to be longer, our engineering level on plant construction will be declining. Hence it is necessary for us to maintain our engineering level. In addition to this circumstance, we are planning to wide application of separated purchase orders for further cost reduction. Also there is an expectation for our contribution to ABWR plant constructions overseas. As facing these circumstances, we have developed a construction database based on our experience for ABWR construction. As the first step of developing the database for these use, we analyzed our own activities in the previous ABWR construction. Through this analysis, we could define activity units of which the project consists. As the second step, we clarified the data which are treated in each activity unit and the interface among them. By taking these steps, we could develop our database efficiently. (author)

  18. Environmental impact management during construction of the limestone project

    International Nuclear Information System (INIS)

    Windsor, D.C.

    1988-01-01

    The Limestone Generating Station is being constructed on the Nelson River in Northern Manitoba, and will consist of a 10 unit powerhouse, 5 gate concrete spillway and earthfill dam spanning the 1.5 km width of the Nelson River. Environmental concerns associated with the project included insufficient pre- and post-construction monitoring documenting resources present or magnitude of impacts, impacts on brook trout and lake sturgeon resources, wildlife habitat loss due to construction activities, destruction or disturbance of historic or archaeological sites, degradation of nearby water courses and fish habitat by aggregate removal, in-migration of construction personnel, and various other socio-economic impacts. An overview is provided of monitoring activities and results in the above areas, which involved numerous consultants and government agencies. The project administration and workers did not find the environmental programs, including inspection and enforcement activities, to be onerous or an impediment to the project. On the contrary, the environmental requirements assisted in the general planning for certain activities, and in the general criteria for the conduct of the activities. The work permit process was particularly useful as it defined the requirements of both parties and provided the specific standards necessary determining the acceptability of the activities. 14 refs., 1 fig

  19. Identification of critical factors affecting flexibility in hospital construction projects.

    Science.gov (United States)

    Olsson, Nils E O; Hansen, Geir K

    2010-01-01

    This paper analyzes the dynamics relating to flexibility in a hospital project context. Three research questions are addressed: (1) When is flexibility used in the life cycle of a project? (2) What are the stakeholders' perspectives on project flexibility? And (3) What is the nature of the interaction between flexibility in the process of a project and flexibility in terms of the characteristics of a building? Flexibility is discussed from both a project management point of view and from a hospital architecture perspective. Flexibility in project life cycle and from a stakeholder perspective is examined, and the interaction between flexibility in scope lock-in and building flexibility is investigated. The results are based on case studies of four Norwegian hospital projects. Information relating to the projects has been obtained from evaluation reports, other relevant documents, and interviews. Observations were codified and analyzed based on selected parameters that represent different aspects of flexibility. One of the cases illustrates how late changes can have a significant negative impact on the project itself, contributing to delays and cost overruns. Another case illustrates that late scope lock-in on a limited part of the project, in this case related to medical equipment, can be done in a controlled manner. Project owners and users appear to have given flexibility high priority. Project management teams are less likely to embrace changes and late scope lock-in. Architects and consultants are important for translating program requirements into physical design. A highly flexible building did not stop some stakeholders from pushing for significant changes and extensions during construction.

  20. The Impact of Project Organizational Culture on the Performance of Construction Projects

    Directory of Open Access Journals (Sweden)

    Luong Hai Nguyen

    2017-05-01

    Full Text Available Cultural influence has recently received significant attention from academics due to its vital role in the success or failure of a project. In the construction industry, several empirical investigations have examined the influence of culture on project management. The aim of this study is to determine the impact of project organizational culture on the performance of construction projects. A total of 199 completed construction projects in Vietnam with specific data gathering through questionnaires were analyzed. The findings reveal that contractor commitment to contract agreements is the most significant cultural factor affecting project performance. Goal alignment and reliance, contractor commitment, and worker orientation (i.e., commitment to workers contribute to improved overall performance and participant satisfaction. Contractor commitment and cooperative orientation enhance labor productivity, whereas goal alignment and trust and contractor commitment ensure learning performance (i.e., learning from experience. The findings of this study may assist construction professionals in implementing practices that can contribute to the sustainability and success of construction projects.

  1. Alternate performance standard project: Interpreting the post-construction test

    International Nuclear Information System (INIS)

    Williamson, A.D.; McDonough, S.E.

    1993-01-01

    The paper describes the results of a project commissioned by the State of Florida, in cooperation with the US Environmental Protection Agency, as one portion of the Florida Radon Research Program (FRRP). The purpose of the FRRP is to provide technical support for a statewide Building Standard for Radon-Resistant Construction currently in the rulemaking process. In this case the information provides technical background for a post-construction radon test specified as a performance element of the code which accompanies the prescriptive alternative that does not incorporate active radon reduction systems

  2. A Model Suggestion to Predict Leverage Ratio for Construction Projects

    OpenAIRE

    Özlem Tüz; Şafak Ebesek

    2013-01-01

    Due to the nature, construction is an industry with high uncertainty and risk. Construction industry carries high leverage ratios. Firms with low equities work in big projects through progress payment system, but in this case, even a small negative in the planned cash flows constitute a major risk for the company.The use of leverage, with a small investment to achieve profit targets large-scale, high-profit, but also brings a high risk with it. Investors may lose all or the portion of th...

  3. Characteristics of worker accidents on NYSDOT construction projects.

    Science.gov (United States)

    Mohan, Satish; Zech, Wesley C

    2005-01-01

    This paper aims at providing cost-effective safety measures to protect construction workers in highway work zones, based on real data. Two types of accidents that occur in work zones were: (a) construction work area accidents, and (b) traffic accidents involving construction worker(s). A detailed analysis of work zone accidents involving 36 fatalities and 3,055 severe injuries to construction workers on New York State Department of Transportation (NYSDOT) construction projects from 1990 to 2001 established that five accident types: (a) Struck/Pinned by Large Equipment, (b) Trip or Fall (elevated), (c) Contact w/Electrical or Gas Utility, (d) Struck-by Moving/Falling Load, and (e) Crane/Lift Device Failure accounted for nearly 96% of the fatal accidents, nearly 63% of the hospital-level injury accidents, and nearly 91% of the total costs. These construction work area accidents had a total cost of $133.8 million. Traffic accidents that involve contractors' employees were also examined. Statistical analyses of the traffic accidents established that five traffic accident types: (a) Work Space Intrusion, (b) Worker Struck-by Vehicle Inside Work Space, (c) Flagger Struck-by Vehicle, (d) Worker Struck-by Vehicle Entering/Exiting Work Space, and (e) Construction Equipment Struck-by Vehicle Inside Work Space accounted for nearly 86% of the fatal, nearly 70% of the hospital-level injury and minor injury traffic accidents, and $45.4 million (79.4%) of the total traffic accident costs. The results of this paper provide real statistics on construction worker related accidents reported on construction work zones. Potential preventions based on real statistics have also been suggested. The ranking of accident types, both within the work area as well as in traffic, will guide the heavy highway contractor and owner agencies in identifying the most cost effective safety preventions.

  4. 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.

  5. ELIMINATION OF THE DISADVANTAGES OF SCHEDULING-NETWORK PLANNING BY APPLYING THE MATRIX OF KEY PROJECT EVENTS

    Directory of Open Access Journals (Sweden)

    Morozenko Andrey Aleksandrovich

    2017-07-01

    Full Text Available The article discusses the current disadvantages of the scheduling-network planning in the management of the terms of investment-construction project. Problems associated with the construction of the schedule and the definitions of the duration of the construction project are being studied. The problems of project management for the management apparatus are shown, which consists in the absence of mechanisms for prompt response to deviations in the parameters of the scheduling-network diagram. A new approach to planning the implementation of an investment-construction project based on a matrix of key events and a rejection of the current practice of determining the duration based on inauthentic regulatory data. An algorithm for determining the key events of the project is presented. For increase the reliability of the organizational structure, the load factor of the functional block in the process of achieving the key event is proposed. Recommendations for improving the interaction of the participants in the investment-construction project are given.

  6. 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.

  7. Critical Success Factors in Construction Projects (Governmental Projects as a Case Study)

    OpenAIRE

    Hatem Khaleefah Al-Ageeli; Abdul Salam J. Ali Alzobaee

    2016-01-01

    The importance of the construction sector and its Great role in the provision of services and infrastructure, reduce poverty, improve living conditions and improve the economic situation in the country, impose attention to the way in which the projects implemented for its improvement and to get successful projects. The objective of this research was to determine the criteria for success as well as critical success and failure factors that have a significant impact on project success. A select...

  8. 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.

  9. Issues and measures in the design process from the perspective of risk management of construction projects. study of power plant construction projects accident cases

    International Nuclear Information System (INIS)

    Iwahara, Hirohiko; Shiraki, Wataru; Inomo, Hitoshi; Hasegawa, Syuichi

    2015-01-01

    Construction of power plants, foundation work, consisting of a wide variety of construction work, such as plant equipment work. And, civil engineering, technician electrical such as different engineering field, is a comprehensive construction project that works for the design conditions of the structure. However, if the cooperation design conditions is not sufficient, as a construction project, the optimal structures may not be said to have been built. As a result, total cost or increased, including the initial cost of the end construction projects, it is be a cause of the accident. Previous studies, plant equipment construction, is related to safety management and risk of foundation work such as individual construction were many. In this paper, as an example the power plant construction, and performs the following discussion from the point of view of risk management of large-scale construction projects that these individual construction work together with each other. The importance of design conditions cooperation, (1) 'Challenges and countermeasures of ordering method of construction projects', to verify from the (2) 'actually happened substation foundation displacement accident'. And on whether or not the construction project order institutions can be involved in the design from the site preparation stage, we study (3) for 'construction work scope and risk control the construction project ordering institutions to implement' the risk to the natural disaster (earthquake). From these, we describe the challenges and measures in the construction project of the design process. (author)

  10. 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.

  11. 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...... awareness about the potential ‘pit-falls’ observed in the case-studies by means of three metaphors for reflection and design-group adjustment. These are: (1) Part-whole conversation, (2) Game of persuasion and (3) Hyper-reality. Reflection and adjustment may require the inclusion of a facilitator....... In addition, concrete suggestions for further development of the design management concept, the workshop model, are provided. In general, the thesis contributes to the emerging literature on construction design man-agement, which is still in its infancy. In addition, the theory part of the thesis contrib...

  12. Construction and Quantification of the One Top model of the Fire Events PSA

    International Nuclear Information System (INIS)

    Kang, Dae Il; Lee, Yoon Hwan; Han, Sang Hoon

    2008-01-01

    KAERI constructed the one top model of the fire events PSA for Ulchin Unit 3 and 4 by using the 'mapping technique'. The mapping technique was developed for the construction and quantification of external events PSA models with a one top model for an internal events PSA. With 'AIMS', the mapping technique can be implemented by the construction of mapping tables. The mapping tables include fire rooms, fire ignition frequency, related initiating events, fire transfer events, and the internal PSA basic events affected by a fire. The constructed one top fire PSA model is based on previously conducted fire PSA results for Ulchin Unit 3 and 4. In this paper, we introduce the construction procedure and quantification results of the one top model of the fire events PSA by using the mapping technique. As the one top model of the fire events PSA developed in this study is based on the previous study, we also introduce the previous fire PSA approach focused on quantification

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

    Science.gov (United States)

    Hatmoko, Jati Utomo Dwi; Hidayat, Arif; Setiawati, Apsari; Prasetyo, Stefanus Catur Adi

    2018-02-01

    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.

  14. 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.

  15. Design iteration in construction projects – Review and directions

    Directory of Open Access Journals (Sweden)

    Purva Mujumdar

    2018-03-01

    Full Text Available Design phase of any construction project involves several designers who exchange information with each other most often in an unstructured manner throughout the design phase. When these information exchanges happen to occur in cycles/loops, it is termed as design iteration. Iteration is an inherent and unavoidable aspect of any design phase which requires proper planning. Till date, very few researchers have explored the design iteration (“complexity” in construction sector. Hence, the objective of this paper was to document and review the complexities of iteration during design phase of construction projects for efficient design planning. To achieve this objective, exhaustive literature review on design iteration was done for four sectors – construction, manufacturing, aerospace, and software development. In addition, semi-structured interviews and discussions were done with a few design experts to verify the different dimensions of iteration. Finally, a design iteration framework was presented in this study that facilitates successful planning. Keywords: Design iteration, Types of iteration, Causes and impact of iteration, Models of iteration, Execution strategies of iteration

  16. Croatian repository construction project - present status and main obstacles

    International Nuclear Information System (INIS)

    Kucar Dragicevic, S.; Subasic, D.; Schaller, A.; Lokner, V.; Cerskov Klika, M.

    1999-01-01

    Croatia has been preparing backgrounds for the construction of the repository for low and intermediate radioactive waste on its territory, almost for a decade, now. In the name of Hrvtaska elektroprivreda, the co-owner of the NE Krsko, APO has been co-ordinating and organising numerous activities and projects during that time period. Siting process, safety assessment, disposal technology and repository design and public acceptance issues are the main fields of activities. The overall status of the project at the moment, including the overview of the present status of the main four aspects of activities, will be presented. Relatively, big and important progress made on the project work out during the last two years, as well as the main obstacles we were faced with during that time period, will be discussed.(author)

  17. Critical Success Factors for Malaysian Construction Projects: An Investigative Review

    Directory of Open Access Journals (Sweden)

    Yee Cheong Yong

    2017-05-01

    Full Text Available Construction projects play an important role in the advancement of a nation through infrastructure development that leads to economic growth. They are planned carefully to accomplish certain goals. However, not all the projects achieved the goals as per planned. Many factors contribute to the successes and failures, and it becomes an interesting arena for research. The primary objective of this paper is to outline the development trend of project success measurement globally and locally. The research method employed was to make selected reviews on critical success factors' (CSFs literature and to compare international standards and progress in incorporating human behavioural aspects of project management to the situation in Malaysia. A somewhat similar pattern can be observed in Malaysia where the studies have departed from the usual criteria of time, cost and quality, to define project success in a more holistic way. However, the domestic industry has failed to respond to the emerging trend globally as there has yet been any widely published research on the importance of human-related factors towards project success. A consolidated framework of CSFs has therefore, been proposed in responding to the findings. This paper fulfils an identified need as there has been a dearth of research on the subject matter locally.

  18. Identifying Issues in Applying Integrated Project Delivery to Domestic Nuclear Power Plant Construction Projects

    Energy Technology Data Exchange (ETDEWEB)

    Kim, Young Joo [Korean Nuclear Society, Daejeon (Korea, Republic of)

    2016-05-15

    Integrated Project Delivery (IPD) is defined as that people, systems, business structures, and practices of key stakeholders are incorporated into a single-team, with a single process, which executes a project in a way of optimizing the project's outcome, increasing values delivered to the end user, reducing waste, and maximizing efficiency throughout the phases of engineering to construction. The researcher had carried out literature review in terms of IPD to identify major characteristics of IPD which are presented in the following section and had compared such characteristics against peculiarities of nuclear power plant (NPP) construction projects in order to shed light on obstacles in possible application of IPD method to domestic NPP construction projects in the coming days. In this research, three (3) major characteristics of IPD were identified: 1) key stakeholders signing one balanced contract, forming de facto one body, sharing risk and reward 2) an integrated project team being formed in the early stage of a project and providing input to minimize time and cost loss from rework downstream 3) team members co-locating, having open and direct communication, making decisions on time, and pursuing the success of the project itself.

  19. 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.

  20. Analytic expressions for the construction of a fire event PSA model

    International Nuclear Information System (INIS)

    Kang, Dae Il; Kim, Kil Yoo; Kim, Dong San; Hwang, Mee Jeong; Yang, Joon Eon

    2016-01-01

    In this study, the changing process of an internal event PSA model to a fire event PSA model is analytically presented and discussed. Many fire PSA models have fire induced initiating event fault trees not shown in an internal event PSA model. Fire-induced initiating fault tree models are developed for addressing multiple initiating event issues. A single fire event within a fire compartment or fire scenario can cause multiple initiating events. As an example, a fire in a turbine building area can cause a loss of the main feed-water and loss of off-site power initiating events. Up to now, there has been no analytic study on the construction of a fire event PSA model using an internal event PSA model with fault trees of initiating events. In this paper, the changing process of an internal event PSA model to a fire event PSA model was analytically presented and discussed. This study results show that additional cutsets can be obtained if the fault trees of initiating events for a fire event PSA model are not exactly developed.

  1. Analytic expressions for the construction of a fire event PSA model

    Energy Technology Data Exchange (ETDEWEB)

    Kang, Dae Il; Kim, Kil Yoo; Kim, Dong San; Hwang, Mee Jeong; Yang, Joon Eon [KAERI, Daejeon (Korea, Republic of)

    2016-05-15

    In this study, the changing process of an internal event PSA model to a fire event PSA model is analytically presented and discussed. Many fire PSA models have fire induced initiating event fault trees not shown in an internal event PSA model. Fire-induced initiating fault tree models are developed for addressing multiple initiating event issues. A single fire event within a fire compartment or fire scenario can cause multiple initiating events. As an example, a fire in a turbine building area can cause a loss of the main feed-water and loss of off-site power initiating events. Up to now, there has been no analytic study on the construction of a fire event PSA model using an internal event PSA model with fault trees of initiating events. In this paper, the changing process of an internal event PSA model to a fire event PSA model was analytically presented and discussed. This study results show that additional cutsets can be obtained if the fault trees of initiating events for a fire event PSA model are not exactly developed.

  2. 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

  3. Treatment of complementary events in event trees in constructing linked fault trees for level 1 and level 2 PRA

    International Nuclear Information System (INIS)

    Jo, Y. G.

    2008-01-01

    Complementary events in the event trees for a PRA model should be treated properly in order to evaluate plant risk correctly. In this study, the characteristics of the following three different cut-set generation methods were investigated first in order to find the best practical way for treating complementary events: 1) exact method which treats complementary events logically, 2) no-delete term method which does not treat complementary events at all, and 3) delete term method which treats complementary events by deleting nonsense cut-sets which are generated as a result of ignoring complementary events. Then, practical methods for treating complementary events in constructing linked fault trees for level 1 and level 2 PRA in EPRI R and R workstation software environment, where CAFTA is the fault tree editor and FORTE is the cut-set engine, were suggested and demonstrated. The suggested methods deal with the following selected four typical cases: Case 1: an event tree event (E) is represented by a fault tree gate whose inputs consist of only fault tree gates, Case 2: E is represented by a single basic event, Case 3: E is represented by an OR fault tree gate which has a single basic event and a fault tree gate as inputs, and Case 4: E is represented by an AND fault tree gate which has a single basic event and a fault tree gate as inputs. In the suggested methods, first the high level logic structures of event tree events are examined and restructured, if needed. Then, the delete term method, the exact method, and the combination of the two methods are applied to Case 1, Case 2, and Cases 3 and 4, respectively. Also, it is recommended to treat complementary events, using the suggested methods, before level 1 and level 2 PRA fault trees are coupled. It should be noted that the selected four typical cases may not cover all different cases encountered in level 1 and level 2 PRA modeling. However, a process similar to the one suggested in this study may be used to find

  4. 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...

  5. A Hybrid MCDM Technique for Risk Management in Construction Projects

    Directory of Open Access Journals (Sweden)

    Kajal Chatterjee

    2018-02-01

    Full Text Available Multi-stakeholder based construction projects are subject to potential risk factors due to dynamic business environment and stakeholders’ lack of knowledge. When solving project management tasks, it is necessary to quantify the main risk indicators of the projects. Managing these requires suitable risk mitigation strategies to evaluate and analyse their severity. The existence of information asymmetry also causes difficulties with achieving Pareto efficiency. Hence, to ensure balanced satisfaction of all participants, risk evaluation of these projects can be considered as an important part of the multi-criteria decision-making (MCDM process. In real-life problems, evaluation of project risks is often uncertain and even incomplete, and the prevailing methodologies fail to handle such situations. To address the problem, this paper extends the analytical network process (ANP methodology in the D numbers domain to handle three types of ambiguous information’s, viz. complete, uncertain, and incomplete, and assesses the weight of risk criteria. The D numbers based approach overcomes the deficiencies of the exclusiveness hypothesis and completeness constraint of Dempster–Shafer (D–S theory. Here, preference ratings of the decision matrix for each decision-maker are determined using a D numbers extended consistent fuzzy preference relation (D-CFPR. An extended multi-attributive border approximation area comparison (MABAC method in D numbers is then developed to rank and select the best alternative risk response strategy. Finally, an illustrative example from construction sector is presented to check the feasibility of the proposed approach. For checking the reliability of alternative ranking, a comparative analysis is performed with different MCDM approaches in D numbers domain. Based on different criteria weights, a sensitivity analysis of obtained ranking of the hybrid D-ANP-MABAC model is performed to verify the robustness of the proposed

  6. Risk Evaluation on UHV Power Transmission Construction Project Based on AHP and FCE Method

    OpenAIRE

    Huiru Zhao; Sen Guo

    2014-01-01

    Ultra high voltage (UHV) power transmission construction project is a high-tech power grid construction project which faces many risks and uncertainty. Identifying the risk of UHV power transmission construction project can help mitigate the risk loss and promote the smooth construction. The risk evaluation on “Zhejiang-Fuzhou” UHV power transmission construction project was performed based on analytic hierarchy process (AHP) and fuzzy comprehensive evaluation (FCE) method in this paper. Afte...

  7. Projected large flood event sensitivity to projection selection and temporal downscaling methodology

    Energy Technology Data Exchange (ETDEWEB)

    Raff, D. [U.S. Dept. of the Interior, Bureau of Reclamation, Denver, Colorado (United States)

    2008-07-01

    Large flood events, that influence regulatory guidelines as well as safety of dams decisions, are likely to be affected by climate change. This talk will evaluate the use of climate projections downscaled and run through a rainfall - runoff model and its influence on large flood events. The climate spatial downscaling is performed statistically and a re-sampling and scaling methodology is used to temporally downscale from monthly to daily signals. The signals are run through a National Weather Service operational rainfall-runoff model to produce 6-hour flows. The flows will be evaluated for changes in large events at look-ahead horizons from 2011 - 2040, 2041 - 2070, and 2071 - 2099. The sensitivity of results will be evaluated with respect to projection selection criteria and re-sampling and scaling criteria for the Boise River in Idaho near Lucky Peak Dam. (author)

  8. Projected large flood event sensitivity to projection selection and temporal downscaling methodology

    International Nuclear Information System (INIS)

    Raff, D.

    2008-01-01

    Large flood events, that influence regulatory guidelines as well as safety of dams decisions, are likely to be affected by climate change. This talk will evaluate the use of climate projections downscaled and run through a rainfall - runoff model and its influence on large flood events. The climate spatial downscaling is performed statistically and a re-sampling and scaling methodology is used to temporally downscale from monthly to daily signals. The signals are run through a National Weather Service operational rainfall-runoff model to produce 6-hour flows. The flows will be evaluated for changes in large events at look-ahead horizons from 2011 - 2040, 2041 - 2070, and 2071 - 2099. The sensitivity of results will be evaluated with respect to projection selection criteria and re-sampling and scaling criteria for the Boise River in Idaho near Lucky Peak Dam. (author)

  9. 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.

  10. Selecting the right collaborative components in a construction project

    DEFF Research Database (Denmark)

    Bohnstedt, Kristian Ditlev; Wandahl, Søren

    2018-01-01

    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....... The questionnaire was distributed electronically to 440 respondents; after sorting a total of 288 valid responses were obtained. The result is a set of components in a model of structures of collaboration that facilitates a more efficient and effective situational collaboration (EESC), it is denoted as target areas...... structured in type of contract, party and component....

  11. IMAGE CONSTRUCTION TO AUTOMATION OF PROJECTIVE TECHNIQUES FOR PSYCHOPHYSIOLOGICAL ANALYSIS

    Directory of Open Access Journals (Sweden)

    Natalia Pavlova

    2018-04-01

    Full Text Available The search for a solution of automation of the process of assessment of a psychological analysis of the person drawings created by it from an available set of some templates are presented at this article. It will allow to reveal more effectively infringements of persons mentality. In particular, such decision can be used for work with children who possess the developed figurative thinking, but are not yet capable of an accurate statement of the thoughts and experiences. For automation of testing by using a projective method, we construct interactive environment for visualization of compositions of the several images and then analyse

  12. Probabilistic cost estimating of nuclear power plant construction projects

    International Nuclear Information System (INIS)

    Finch, W.C.; Perry, L.W.; Postula, F.D.

    1978-01-01

    This paper shows how to identify and isolate cost accounts by developing probability trees down to component levels as justified by value and cost uncertainty. Examples are given of the procedure for assessing uncertainty in all areas contributing to cost: design, factory equipment pricing, and field labor and materials. The method of combining these individual uncertainties is presented so that the cost risk can be developed for components, systems and the total plant construction project. Formats which enable management to use the probabilistic cost estimate information for business planning and risk control are illustrated. Topics considered include code estimate performance, cost allocation, uncertainty encoding, probabilistic cost distributions, and interpretation. Effective cost control of nuclear power plant construction projects requires insight into areas of greatest cost uncertainty and a knowledge of the factors which can cause costs to vary from the single value estimates. It is concluded that probabilistic cost estimating can provide the necessary assessment of uncertainties both as to the cause and the consequences

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

    Directory of Open Access Journals (Sweden)

    Ingeborg Wasif

    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

  14. 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.

  15. 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.

  16. 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.

  17. Treatment of complementary events in constructing the linked Level 1 and Level 2 fault trees

    International Nuclear Information System (INIS)

    Jo, Young G.; Ahn, Kwang-Il

    2009-01-01

    Complementary events in the event trees for a PRA model should be treated properly in order to evaluate plant risk correctly. In this paper, the characteristics of the following three different cutset generation methods were investigated first in order to find the best practical way for treating complementary events: (1) exact method which treats complementary events logically, (2) no-delete term method which does not treat complementary events at all, and (3) delete term method which treats complementary events by deleting nonsense cutsets which are generated as a result of ignoring complementary events. Then, practical methods for treating complementary events in constructing linked fault trees for Level 1 and Level 2 PRA were suggested and demonstrated. The suggested methods deal with the following selected four typical cases: (1) Case 1-an event tree event (E) is represented by a fault tree gate whose inputs consist of only fault tree gates, (2) Case 2-E is represented by a single basic event, (3) Case 3-E is represented by an OR fault tree gate which has a single basic event and a fault tree gate as inputs, and (4) Case 4-E is represented by an AND fault tree gate which has a single basic event and a fault tree gate as inputs. In the suggested methods, first the high level logic structures of event tree events are examined and restructured, if needed. Then, the delete term method, the exact method, and the combination of the two methods are applied to through Case 1 to Case 4, respectively. As a result, it is recommended to treat complementary events, using the suggested methods, before Level 1 and Level 2 PRA fault trees are coupled

  18. 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.

  19. 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.

  20. 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.

  1. Reactivation of nuclear power plant construction projects. Plant status, policy issues and regulatory options

    International Nuclear Information System (INIS)

    Spangler, M.B.

    1986-07-01

    Prior to the TMI-2 accident on March 28, 1979, four nuclear power plant units that had previously been issued a construction permit were cancelled, principally because of reduced projections of regional power demand. Since that time, an additional 31 units with CPs have been cancelled and eight units deferred. On December 23, 1985 one of the deferred units (Limerick-2) was reactivated and construction resumed. The primary objective of this policy study is to identify the principal issues requiring office-level consideration in the event of reactivation of the construction of one or more of the nuclear power plants falling into two categories: (1) LWR units issued a construction permit whose construction has been cancelled, and (2) LWR units whose construction has been deferred. The study scope is limited to identifying regulatory issues or questions deserving analysis rather than providing, at this time, answers or recommended actions. Five tasks are addressed: a tabulation and discussion of the status of all cancelled and deferred LWR units; and identification of potential safety and environmental issues; an identification of regulatory or policy issues and needed information to determine the desirability of revising certain rules and policies; and identification of regulatory options and decision criteria; and an identification of decision considerations in determining staff requirements and organizational coordination of LWR reactivation policy and implementation efforts. 41 refs

  2. The Application of the Real Options Method for the Evaluation of High-Rise Construction Projects

    Science.gov (United States)

    Izotov, Aleksandr; Rostova, Olga; Dubgorn, Alissa

    2018-03-01

    The paper is devoted to the problem of evaluation of high-rise construction projects in a rapidly changing environment. The authors proposed an algorithm for constructing and embedding real options in high-rise construction projects, which makes it possible to increase the flexibility of managing multi-stage projects that have the ability to adapt to changing conditions of implementation.

  3. 42 CFR 137.329 - What environmental considerations must be included in the construction project agreement?

    Science.gov (United States)

    2010-10-01

    ... must be included in the construction project agreement? The construction project agreement must include..., and (d) An assurance that no action will be taken on the construction phase of the project that would... 42 Public Health 1 2010-10-01 2010-10-01 false What environmental considerations must be included...

  4. 42 CFR 137.362 - May construction project agreements be amended?

    Science.gov (United States)

    2010-10-01

    ... 42 Public Health 1 2010-10-01 2010-10-01 false May construction project agreements be amended? 137... of the Secretary in Establishing and Implementing Construction Project Agreements § 137.362 May construction project agreements be amended? Yes, the Self-Governance Tribe, at its discretion, may request the...

  5. 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.

  6. Extreme heat event projections for a coastal megacity

    Science.gov (United States)

    Ortiz, L. E.; Gonzalez, J.

    2017-12-01

    As summers become warmer, extreme heat events are expected to increase in intensity, frequency, and duration. Large urban centers may affect these projections by introducing feedbacks between the atmosphere and the built environment through processes involving anthropogenic heat, wind modification, radiation blocking, and others. General circulation models are often run with spatial resolutions in the order of 100 km, limiting their skill at resolving local scale processes and highly spatially varying features such as cities' heterogeneous landscape and mountain topography. This study employs climate simulations using the Weather Research and Forecast (WRF) model coupled with a modified multi-layer urban canopy and building energy model to downscale CESM1 at 1 km horizontal resolution across three time slices (2006-2010, 2075-2079, and 2095-2099) and two projections (RCP 4.5 and 8.5). New York City Metropolitan area, with a population of over 20 million and a complex urban canopy, is used as a case study. The urban canopy model of WRF was modified to include a drag coefficient as a function of the building plant area fraction and the introduction of evaporative cooling systems at building roofs to reject the anthropogenic heat from the buildings, with urban canopy parameters computed from the New York City Property Land-Use Tax-lot Output (PLUTO). Model performance is evaluated against the input model and historical records from airport stations, showing improvement in the statistical characteristics in the downscaled model output. Projection results are presented as spatially distributed anomalies in heat wave frequency, duration, and maximum intensity from the 2006-2010 benchmark period. Results show that local sea-breeze circulations mitigate heat wave impacts, following a positive gradient with increasing distance from the coastline. However, end of century RCP 8.5 projections show the possibility of reversal of this pattern, sea surface temperatures increase

  7. AUTOET code (a code for automatically constructing event trees and displaying subsystem interdependencies)

    International Nuclear Information System (INIS)

    Wilson, J.R.; Burdick, G.R.

    1977-06-01

    This is a user's manual for AUTOET I and II. AUTOET I is a computer code for automatic event tree construction. It is designed to incorporate and display subsystem interdependencies and common or key component dependencies in the event tree format. The code is written in FORTRAN IV for the CDC Cyber 76 using the Integrated Graphics System (IGS). AUTOET II incorporates consequence and risk calculations, in addition to some other refinements. 5 figures

  8. Systematic Representation of Relationship Quality in Conflict and Dispute: for Construction Projects

    Directory of Open Access Journals (Sweden)

    Mostafa Babaeian Jelodar

    2015-03-01

    Full Text Available The construction industry needs to move towards more relational procurement procedures to reduce extensive losses of value and avoid conflicts and disputes. Despite this, the actual conceptualization and assessment of relationships during conflict and dispute incidents seem to be neglected. Via a review of literature, relationship quality is suggested as a systematic framework for construction projects. General system theory is applied and a framework consistent of four layers respectively labelled as triggering, antecedent, moderation and outcome is suggested. Two different case studies are undertaken to represent the systematic framework; which verifies that changes in contracting circumstances and built environment culture can affect the identified layers. Through system reliability theories a fault tree is derived to represent a systematic framework of relationship quality. The combinations of components, causes, and events for two case studies are mapped out through fault tree. By analysing the fault tree the combination of events that lead to relationship deterioration may be identified. Consequently the progression of simple events into failure is formulized and probabilities allocated. Accordingly the importance and the contribution of these events to failure become accessible. The ability to have such indications about relationship quality may help increase performance as well as sustainable procurement.  Paper Type: Research article

  9. CMHC research project: Testing of air barriers construction details: Report

    Energy Technology Data Exchange (ETDEWEB)

    1991-01-01

    This project was conducted to quantify the air leakage characteristics of the header joist, the electric outlets, and the window openings in wood-frame walls. The study evaluated the sealed internal membrane method, where polyethylene sheet and sealant provide the air barrier; the external air barrier method, which uses a continuous vapour permeable membrane (spun-bonded olefin film), sandwiched between two layers of external wall sheathing; and the airtight drywall method, where the interior gypsum board finish, together with framing materials and gaskets, are used as the air barrier. In addition, the traditional approach to wood-frame wall construction, where no special attention is given to achieving a continuous air barrier, was evaluated for comparison.

  10. 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

  11. 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.

  12. 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.

  13. On constructing optimistic simulation algorithms for the discrete event system specification

    International Nuclear Information System (INIS)

    Nutaro, James J.

    2008-01-01

    This article describes a Time Warp simulation algorithm for discrete event models that are described in terms of the Discrete Event System Specification (DEVS). The article shows how the total state transition and total output function of a DEVS atomic model can be transformed into an event processing procedure for a logical process. A specific Time Warp algorithm is constructed around this logical process, and it is shown that the algorithm correctly simulates a DEVS coupled model that consists entirely of interacting atomic models. The simulation algorithm is presented abstractly; it is intended to provide a basis for implementing efficient and scalable parallel algorithms that correctly simulate DEVS models

  14. Applications and Prospects of Modularization Technology in HTR Project Starting from Primary Loop Cavity Construction

    International Nuclear Information System (INIS)

    Yang Guokang; Chen Jing; Huang Wen; Lin Lizhi; Sun Yunlun; Chen Yan; Mao Jiaxin; Wang Yougang; Wang Jinwen; Lin Mingfeng; Yang Mingshan

    2014-01-01

    Primary loop cavity is one of the key areas and major difficulties in HTR-PM project construction. In order to shorten the construction schedule and improve the construction quality, researches on modular design and construction of primary loop cavity has been carried out and the results have been applied in HTR-PM project construction, and got significant application benefit. This paper summarizes the modularization technology application research and project implementation results of primary loop cavity, and analyzes the application and prospects of modularization technology in the HTR project construction. (author)

  15. 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.

  16. 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.

  17. Direct AFM observation of an opening event of a DNA cuboid constructed via a prism structure.

    Science.gov (United States)

    Endo, Masayuki; Hidaka, Kumi; Sugiyama, Hiroshi

    2011-04-07

    A cuboid structure was constructed using a DNA origami design based on a square prism structure. The structure was characterized by atomic force microscopy (AFM) and dynamic light scattering. The real-time opening event of the cuboid was directly observed by high-speed AFM.

  18. Defining a quantitative framework for evaluation and optimisation of the environmental impacts of mega-event projects.

    Science.gov (United States)

    Parkes, Olga; Lettieri, Paola; Bogle, I David L

    2016-02-01

    This paper presents a novel quantitative methodology for the evaluation and optimisation of the environmental impacts of the whole life cycle of a mega-event project: construction and staging the event and post-event site redevelopment and operation. Within the proposed framework, a mathematical model has been developed that takes into account greenhouse gas (GHG) emissions resulting from use of transportation fuel, energy, water and construction materials used at all stages of the mega-event project. The model is applied to a case study - the London Olympic Park. Three potential post-event site design scenarios of the Park have been developed: Business as Usual (BAU), Commercial World (CW) and High Rise High Density (HRHD). A quantitative summary of results demonstrates that the highest GHG emissions associated with the actual event are almost negligible compared to those associated with the legacy phase. The highest share of emissions in the legacy phase is attributed to embodied emissions from construction materials (almost 50% for the BAU and HRHD scenarios) and emissions resulting from the transportation of residents, visitors and employees to/from the site (almost 60% for the CW scenario). The BAU scenario is the one with the lowest GHG emissions compared to the other scenarios. The results also demonstrate how post-event site design scenarios can be optimised to minimise the GHG emissions. The overall outcomes illustrate how the proposed framework can be used to support decision making process for mega-event projects planning. Copyright © 2015 The Authors. Published by Elsevier Ltd.. All rights reserved.

  19. Influences of high-flow events on a stream channel altered by construction of a highway bridge: A case study

    Science.gov (United States)

    Hedrick, Lara B.; Welsh, Stuart A.; Anderson, James T.

    2009-01-01

    Impacts of highway construction on streams in the central Appalachians are a growing concern as new roads are created to promote tourism and economic development in the area. Alterations to the streambed of a first-order stream, Sauerkraut Run, Hardy County, WV, during construction of a highway overpass included placement and removal of a temporary culvert, straightening and regrading of a section of stream channel, and armourment of a bank with a reinforced gravel berm. We surveyed longitudinal profiles and cross sections in a reference reach and the altered reach of Sauerkraut Run from 2003 through 2007 to measure physical changes in the streambed. During the four-year period, three high-flow events changed the streambed downstream of construction including channel widening and aggradation and then degradation of the streambed. Upstream of construction, at a reinforced gravel berm, bank erosion was documented. The reference section remained relatively unchanged. Knowledge gained by documenting channel changes in response to natural and anthropogenic variables can be useful for managers and engineers involved in highway construction projects.

  20. Study on nuclear power plant project construction and management mode in China

    International Nuclear Information System (INIS)

    Wang Kai; Chen Lian

    2009-01-01

    Project management mode plays a key role in project construction, especially in nuclear power field. From the aspects of right, responsibility and benefit, this paper discussed the differences among the common used project management modes. Also the main kinds of the construction management modes used in China's nuclear power plants were summarized. At last, considering the experience of Ningde nuclear power plant, this paper put forward several perspectives about the selection of project management mode in nuclear power plant construction. (authors)

  1. 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.

  2. Engineer, procure, construct (EPC) for nuclear projects in OPG

    Energy Technology Data Exchange (ETDEWEB)

    Elliott, M. [Ontario Power Generation, Toronto, Ontario (Canada)

    2011-07-01

    OPG is exploring the use of EPC contracts for Nuclear Plant Design Modifications. Although OPG has used EPC outside of the nuclear island, this new initiative will begin to use EPC inside the plant, including upgrades to existing stations and mid-life refurbishment of Darlington. Benchmarking has shown that apart from new build, nuclear utilities rarely use this method inside the plant so OPG is using a step-by-step approach starting with projects with low complexity and low plant impact. The expected benefits are reduced interfaces and a simplified accountability model leading to schedule and cost improvements and lower rework. Design packages that incorporate construction input before issue will be a significant improvement. OPG's early challenges in moving to EPC include clearly defining roles, responsibilities and interfaces between the vendors and OPG, and modifying governance to match the new model. OPG intends to oversee the work while holding the vendor accountable for needs skill development on both sides. Vendors are expected to establish an engaged organization with complete knowledge of plant conditions, processes and streamlined methods to gain operations input. Vendors are also expected to identify and fix any quality issues before the modifications are commissioned and to have an in-house corrective action program to continuously improve. Vendors' early challenges include presenting one face to OPG rather than a collection of joint venture partners. This presentation describes OPG's plans and early feedback on this exciting new initiative.

  3. Engineer, procure, construct (EPC) for nuclear projects in OPG

    International Nuclear Information System (INIS)

    Elliott, M.

    2011-01-01

    OPG is exploring the use of EPC contracts for Nuclear Plant Design Modifications. Although OPG has used EPC outside of the nuclear island, this new initiative will begin to use EPC inside the plant, including upgrades to existing stations and mid-life refurbishment of Darlington. Benchmarking has shown that apart from new build, nuclear utilities rarely use this method inside the plant so OPG is using a step-by-step approach starting with projects with low complexity and low plant impact. The expected benefits are reduced interfaces and a simplified accountability model leading to schedule and cost improvements and lower rework. Design packages that incorporate construction input before issue will be a significant improvement. OPG's early challenges in moving to EPC include clearly defining roles, responsibilities and interfaces between the vendors and OPG, and modifying governance to match the new model. OPG intends to oversee the work while holding the vendor accountable for needs skill development on both sides. Vendors are expected to establish an engaged organization with complete knowledge of plant conditions, processes and streamlined methods to gain operations input. Vendors are also expected to identify and fix any quality issues before the modifications are commissioned and to have an in-house corrective action program to continuously improve. Vendors' early challenges include presenting one face to OPG rather than a collection of joint venture partners. This presentation describes OPG's plans and early feedback on this exciting new initiative.

  4. Yucca Mountain Site Characterization Project exploratory studies facilities construction status

    International Nuclear Information System (INIS)

    Allan, J.N.; Leonard, T.M.

    1993-01-01

    This paper discusses the progress to date on the construction planning and development of the Yucca Mountain Site Characterization Project (YMP) Exploratory Studies Facilities (ESF). The purpose of the ESF is to determine early site suitability and to characterize the subsurface of the Yucca Mountain site to assess its suitability for a potential high level nuclear waste repository. The present ESF configuration concept is for two main ramps to be excavated by tunnel boring machines (TBM) from the surface to the Topopah Spring Member of the Paintbrush Tuff Formation. From the main ramps, slightly above Topopah Spring level, supplemental ramps will be penetrated to the Calico Hills formation below the potential repository. There will be exploratory development drifts driven on both levels with the Main Test Area being located on the Topopah Spring level, which is the level of the proposed repository. The Calico Hills formation lies below the Topopah Spring member and is expected to provide the main geo-hydrologic barrier between the potential repository and the underlying saturated zones in the Crater Flat Tuff

  5. Critical Success Factors in Construction Projects (Governmental Projects as a Case Study

    Directory of Open Access Journals (Sweden)

    Hatem Khaleefah Al-Ageeli

    2016-03-01

    Full Text Available The importance of the construction sector and its Great role in the provision of services and infrastructure, reduce poverty, improve living conditions and improve the economic situation in the country, impose attention to the way in which the projects implemented for its improvement and to get successful projects. The objective of this research was to determine the criteria for success as well as critical success and failure factors that have a significant impact on project success. A selected 75 engineer (department managers, project managers and engineers are asked to fill the questionnaire form, Sixty-seven valid questionnaire forms were analyzed statistically to get search results, which were as follows : Twelve critical success factors, the most important factors of it were ("contractor financial efficiency ", " security ,political , economic stability ", "the project manager competence" and " Integration and clarity of contract documents " , thirteen critical failure factors, the most important factors of it were ("corruption " , " external circumstances ", "Financial difficulties of owner", and ten success criteria , the most important criteria of it were ("within allocated budget" , " within time period" , "Quality" .

  6. Risk Management System and Project Staff Education Program for Overseas Construction Project Using the Expert System

    OpenAIRE

    Hirota, Yoichi

    2007-01-01

    The turnover of the Japanese contractors and the consulting firms has kept the same level since 1983, in spite of the fact that the size of domestic market is shrinking. This is why they do not have a proper management system, especially risk management system for the overseas construction projects. This study aims at building risk management system and developing education program that can be applied to reinforcing the ability, based on the author’s experience. Risk is defined as “uncertain ...

  7. Project Management Life Cycle Models to Improve Management in High-rise Construction

    Science.gov (United States)

    Burmistrov, Andrey; Siniavina, Maria; Iliashenko, Oksana

    2018-03-01

    The paper describes a possibility to improve project management in high-rise buildings construction through the use of various Project Management Life Cycle Models (PMLC models) based on traditional and agile project management approaches. Moreover, the paper describes, how the split the whole large-scale project to the "project chain" will create the factor for better manageability of the large-scale buildings project and increase the efficiency of the activities of all participants in such projects.

  8. Project Management Life Cycle Models to Improve Management in High-rise Construction

    Directory of Open Access Journals (Sweden)

    Burmistrov Andrey

    2018-01-01

    Full Text Available The paper describes a possibility to improve project management in high-rise buildings construction through the use of various Project Management Life Cycle Models (PMLC models based on traditional and agile project management approaches. Moreover, the paper describes, how the split the whole large-scale project to the "project chain" will create the factor for better manageability of the large-scale buildings project and increase the efficiency of the activities of all participants in such projects.

  9. Remembering the past and imagining the future: common and distinct neural substrates during event construction and elaboration

    OpenAIRE

    Addis, Donna Rose; Wong, Alana T.; Schacter, Daniel L.

    2006-01-01

    People can consciously re-experience past events and pre-experience possible future events. This fMRI study examined the neural regions mediating the construction and elaboration of past and future events. Participants were cued with a noun for 20 seconds and instructed to construct a past or future event within a specified time period (week, year, 5–20 years). Once participants had the event in mind, they made a button press and for the remainder of the 20 seconds elaborated on the event. Im...

  10. 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...

  11. Assessing the influence of project management on quality during the early phases of construction projects

    Directory of Open Access Journals (Sweden)

    Ljevo Žanesa

    2018-12-01

    Full Text Available Although the quality of a process affects the quality of the end product, there is currently an insignif­icant amount of knowledge about the quality of project management (PM processes that directly affect the quality of the delivered product (constructed building. This study presents a proposal for modeling the impact of the quality of the PM process on the quality of the con­structed building. The quality of the PM process is rep­resented by the main quality factors and product quality indicators. It presents the results of the interviews that were conducted and study cases that were analyzed in Bosnia and Herzegovina with a variety of project partici­pants (with different managerial perspectives in terms of the indicators of quality of the delivered product. All par­ticipants, regardless of managerial perspective, believe that the most important indicator of the quality of prod­ucts for each phase of the project is “customer satisfaction in the end phase”, the measurement of which is different for each project phase that is presented. The results of the factor analysis of the definition and the planning phases show that 11 variables, namely, the quality factors of the PM process, can be grouped into three new factors, which is described as 66.61% (77.046% of the basic set of vari­ables.

  12. Qualitative Approach on Investigating Failure Factors of Yemeni Mega Construction Projects

    OpenAIRE

    Gamil Yaser; Abdul Rahman Ismail; Nagapan Sasitharan; Alemad Nashwan

    2017-01-01

    Large construction projects in Yemen face many impediments and challenges to be completed successfully. This article presents an investigative cases study of three mega construction projects which are considered failed to achieve their assigned plans and objectives. An exploratory interview was implied in this study via telephone to three construction experts who involved directly in these mega projects at the managerial level. Semi-structured questions based on literature were designed as gu...

  13. Research on Green Construction Technology Applied at Guangzhou Hongding Building Project

    Science.gov (United States)

    Lou, Yong Zhong

    2018-06-01

    The green construction technology is the embodiment of sustainable development strategy in the construction industry, and it is a new construction mode which requires a higher environmental protection. Based on the Hongding building project, this paper describes the application and innovation of technical in the process of implementing green construction in the project, as well as the difficulties and characteristics in the specific practice; .The economic and social benefits of green construction are compared to the traditional construction model; .The achievements and experience of the green construction technology are summarized in the project; The ideas and methods in the process of implementing green construction are abstracted; some suggestions are put forward for the development of green construction.

  14. GRAVITATIONAL MICROLENSING EVENTS AS A TARGET FOR THE SETI PROJECT

    Energy Technology Data Exchange (ETDEWEB)

    Rahvar, Sohrab, E-mail: rahvar@sharif.edu [Department of Physics, Sharif University of Technology, P.O. Box 11365–9161, Tehran (Iran, Islamic Republic of)

    2016-09-01

    The detection of signals from a possible extrasolar technological civilization is one of the most challenging efforts of science. In this work, we propose using natural telescopes made of single or binary gravitational lensing systems to magnify leakage of electromagnetic signals from a remote planet that harbors Extraterrestrial Intelligent (ETI) technology. Currently, gravitational microlensing surveys are monitoring a large area of the Galactic bulge to search for microlensing events, finding more than 2000 events per year. These lenses are capable of playing the role of natural telescopes, and, in some instances, they can magnify radio band signals from planets orbiting around the source stars in gravitational microlensing systems. Assuming that the frequency of electromagnetic waves used for telecommunication in ETIs is similar to ours, we propose follow-up observation of microlensing events with radio telescopes such as the Square Kilometre Array (SKA), the Low Frequency Demonstrators, and the Mileura Wide-Field Array. Amplifying signals from the leakage of broadcasting by an Earth-like civilization will allow us to detect them as far as the center of the Milky Way galaxy. Our analysis shows that in binary microlensing systems, the probability of amplification of signals from ETIs is more than that in single microlensing events. Finally, we propose the use of the target of opportunity mode for follow-up observations of binary microlensing events with SKA as a new observational program for searching ETIs. Using optimistic values for the factors of the Drake equation provides detection of about one event per year.

  15. Projecting labor demand and worker immigration at nuclear power plant construction sites: an evaluation of methodology

    International Nuclear Information System (INIS)

    Herzog, H.W. Jr; Schlottmann, A.M.; Schriver, W.R.

    1981-12-01

    The study evaluates methodology employed for the projection of labor demand at, and worker migration to, nuclear power plant construction sites. In addition, suggestions are offered as to how this projection methodology might be improved. The study focuses on projection methodologies which forecast either construction worker migration or labor requirements of alternative types of construction activity. Suggested methodological improvements relate both to institutional factors within the nuclear power plant construction industry, and to a better use of craft-specific data on construction worker demand/supply. In addition, the timeliness and availability of the regional occupational data required to support, or implement these suggestions are examined

  16. 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.

  17. 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.

  18. Progress in resolving construction issues on nuclear projects

    International Nuclear Information System (INIS)

    Reedy, R.F.

    1985-01-01

    The cost of nuclear plant construction in the United States can be drastically reduced. Progress is being made in the reduction of construction costs and with continuing effort much more can be done. The easiest way to attack high costs is to eliminate the unnecessary repairs and rework in construction, along with the time consuming evaluations and dispositions, and to use common sense in design practices. By doing this, millions of dollars could easily be cut from the cost of construction of nuclear powerplants

  19. The Influence of Trust on Project Management Practice within the Construction Industry

    OpenAIRE

    Strahorn, Scott; Brewer, Graham; Gajendran, Thayaparan

    2017-01-01

    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 specific...

  20. M.S. independent research study : partnering on small construction project

    OpenAIRE

    Conley, Michael A

    1997-01-01

    This investigation will address the possibility that partnering concepts are underutilized in small government projects. If Government Contracting Officers utilized partnering concepts on small construction projects, there could be a potential for saving millions of dollars annually. The primary objective of this report is to inform Contracting Officers of the benefits of partnering on small construction projects. Small projects will be considered to have a value of less than $3 million, mid-...

  1. Relationship between time management in construction industry and project management performance

    Science.gov (United States)

    Nasir, Najuwa; Nawi, Mohd Nasrun Mohd; Radzuan, Kamaruddin

    2016-08-01

    Nowadays, construction industry particularly in Malaysia struggle in achieving status of eminent time management for construction project. Project managers have a great responsibility to keep the project success under time of project completion. However, studies shows that delays especially in Malaysian construction industry still unresolved due to weakness in managing the project. In addition, quality of time management on construction projects is generally poor. Due to the progressively extended delays issue, time performance becomes an important subject to be explored to investigate delay factors. The method of this study is review of literature towards issues in construction industry which affecting time performance of project in general by focusing towards process involved for project management. Based on study, it was found that knowledge, commitment, cooperation are the main criteria as an overall to manage the project into a smooth process during project execution until completion. It can be concluded that, the strength between project manager and team members in these main criteria while conducting the project towards good time performance is highly needed. However, there is lack of establishment towards factors of poor time performance which strongly related with project management. Hence, this study has been conducted to establish factors of poor time performance and its relations with project management.

  2. Clinch River Breeder Reactor Plant Project: construction schedule

    International Nuclear Information System (INIS)

    Purcell, W.J.; Martin, E.M.; Shivley, J.M.

    1982-01-01

    The construction schedule for the Clinch River Breeder Reactor Plant and its evolution are described. The initial schedule basis, changes necessitated by the evaluation of the overall plant design, and constructability improvements that have been effected to assure adherence to the schedule are presented. The schedule structure and hierarchy are discussed, as are tools used to define, develop, and evaluate the schedule

  3. Water quality during storm events from two constructed wetlands receiving mine drainage

    International Nuclear Information System (INIS)

    Stark, L.R.; Brooks, R.P.; Williams, F.M.; Stevens, S.E. Jr.; Davis, L.K.

    1994-01-01

    Flow rates, pH, iron concentration, and manganese concentration were measured during several storm event at two constructed wetlands receiving mine water. During a substantial rain event, flow rates at both the wetland outlets surpassed flow rates at the wetland inlets, reflecting incident rainfall and differences in wetland area at the two sites. A significant positive correlation existed between local rainfall and outflow rates at the larger wetland, but not between rainfall and inflow rates. During storm events, outlet pH, relative to inlet pH, was slightly elevated at the larger wetland, and depressed at the smaller wetland. However, over the course of one year, rainfall was uncorrelated to outlet pH in the larger wetland. A substantial rain event at the smaller wetland resulted in a temporary elevation in outlet iron concentrations, with treatment efficiency reduced to near zero. However, in the larger wetland, outlet iron concentrations were not significantly affected by storm events. 14 refs., 7 figs., 4 tabs

  4. identifying the critical causes of conflict in construction projects

    African Journals Online (AJOL)

    user

    2016-04-02

    Apr 2, 2016 ... related phases- briefing, design, construction and .... in Nigeria using a mixed method research approach. Where mixed refers to all procedures collecting and analyzing both quantitative and qualitative data. An approach that ...

  5. 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.

  6. Critical Causes and Consequences of Construction Project Interruption: Client, Contractor, Consultant and External Factors Standpoints

    Directory of Open Access Journals (Sweden)

    Nurbasirah Mohamed Alias

    2013-09-01

    Full Text Available It should be pointed out that the dilemma of interruption and stoppage in the construction industry is a large-scale trend. Construction interruption and stoppage is considered one of the most recurring problems in the construction industry. Construction Interruption and stoppage is always measured as costly to all parties concerned in the projects and very often it will result in clash, claims, total desertion and much difficult for the feasibility and it slows the growth of construction sector. The objective of the research work that underpins this paper was to investigate the Factors and Consequences of construction projects on local contractors. A construction project is commonly acknowledged as successful when the aim of the project is achieved in terms of predetermined objectives that are mainly completed the project on time, within budget and specified quality in accordance with the specifications and to stakeholders’ satisfaction. One of the most important problems that may arise in the construction project is delays and the magnitude of these delays varies considerably from project to project. According to delay categories that were contractor related, client related, consultant related, labour related and external related, the study revealed the six major effects of delay that were time overrun, cost overrun, dispute, arbitration, total abandonment, and litigation.

  7. Discussion on the method of environmental radiological impact assessment for the highway construction project

    International Nuclear Information System (INIS)

    Qiu Guohua

    2008-01-01

    Based on the characteristics and environmental radiological impact of the highway construction project, the basic procedure of environmental radiological impact assessment for the highway construction project is put forward, including analysis and determination of contamination sources, selection of evaluation factors, determination of assessment range and dose limit, environmental investigation, environmental impact prediction and assessment. The working method of each procedure is analyzed. (authors)

  8. Assessing Environmental Impact Indicators in Road Construction Projects in Developing Countries

    Directory of Open Access Journals (Sweden)

    Mohamed Marzouk

    2017-05-01

    Full Text Available Environmental pollution is considered to be one of the main concerns in the construction industry. Environmental pollution has become a major challenge to construction projects due to the huge amount of pollution caused by construction projects. There are different types of environmental impact indicators, such as the greenhouse gas (GHG footprint, eutrophication potential (EP, acidification potential (AP, human health (HH particulate, ozone depletion, and smog. Each of these environmental impact indicators can be linked to different phases of the construction projects. The overall environmental impact indicators can be divided into direct, indirect, and operational emissions. This paper presents a Building Information Modeling (BIM-based methodology for the assessment of environmental impacts in road construction projects. The model takes into account the overall life cycle of the road construction project, which is divided into: manufacturing phase, transportation phase, construction phase, maintenance phase, operational phase, recycling phase, and deconstruction phase. A case study is presented to demonstrate the applicability of the proposed model. The proposed model solves a major problem for road construction project teams who want to assess the environmental impact indicators associated with their project prior to the start of the execution of their projects.

  9. 42 CFR 137.353 - What is contained in a construction project financial report?

    Science.gov (United States)

    2010-10-01

    ... financial report? 137.353 Section 137.353 Public Health PUBLIC HEALTH SERVICE, DEPARTMENT OF HEALTH AND... § 137.353 What is contained in a construction project financial report? Construction project financial reports contain information regarding the amount of funds expended during the reporting period, and...

  10. 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…

  11. From concept to construction: a 15 MW small hydro project

    Energy Technology Data Exchange (ETDEWEB)

    Stephens, S.; Neegan, K.

    1995-12-31

    An audio recording of an address by Chief Stanley Stephens and Deputy-Chief Ken Neegan of the Constance Lake First Nation, at the Renewable Energy Commercial Trade Show and Markets Conference was presented. The speech concerned development of a 15 MW hydro project on the reservation. Stephens recalled how initial opposition was overcome by addressing simple misconceptions about the project. The project was initiated by the Ontario Energy Corporation with a series of community discussions which addressed environmental impacts, and benefits that would result from the project. Neegan explained that after deliberation and negotiations, the Constance Lake First Nation was pleased with the project. This project was evidence that sound partnership could be formed between First Nations and hydro developers, while preserving respect for `Mother Earth` in the process. Trust between the community, the developers and government was considered to be the critical component of the project. Sound legal, technical, environmental and financial information was also indispensable in allowing the Constance Lake First Nation to make its decision to proceed with the project.

  12. From concept to construction: a 15 MW small hydro project

    International Nuclear Information System (INIS)

    Stephens, S.; Neegan, K.

    1995-01-01

    An audio recording of an address by Chief Stanley Stephens and Deputy-Chief Ken Neegan of the Constance Lake First Nation, at the Renewable Energy Commercial Trade Show and Markets Conference was presented. The speech concerned development of a 15 MW hydro project on the reservation. Stephens recalled how initial opposition was overcome by addressing simple misconceptions about the project. The project was initiated by the Ontario Energy Corporation with a series of community discussions which addressed environmental impacts, and benefits that would result from the project. Neegan explained that after deliberation and negotiations, the Constance Lake First Nation was pleased with the project. This project was evidence that sound partnership could be formed between First Nations and hydro developers, while preserving respect for 'Mother Earth' in the process. Trust between the community, the developers and government was considered to be the critical component of the project. Sound legal, technical, environmental and financial information was also indispensable in allowing the Constance Lake First Nation to make its decision to proceed with the project

  13. Risk Management in Complex Construction Projects that Apply Renewable Energy Sources: A Case Study of the Realization Phase of the Energis Educational and Research Intelligent Building

    Science.gov (United States)

    Krechowicz, Maria

    2017-10-01

    Nowadays, one of the characteristic features of construction industry is an increased complexity of a growing number of projects. Almost each construction project is unique, has its project-specific purpose, its own project structural complexity, owner’s expectations, ground conditions unique to a certain location, and its own dynamics. Failure costs and costs resulting from unforeseen problems in complex construction projects are very high. Project complexity drivers pose many vulnerabilities to a successful completion of a number of projects. This paper discusses the process of effective risk management in complex construction projects in which renewable energy sources were used, on the example of the realization phase of the ENERGIS teaching-laboratory building, from the point of view of DORBUD S.A., its general contractor. This paper suggests a new approach to risk management for complex construction projects in which renewable energy sources were applied. The risk management process was divided into six stages: gathering information, identification of the top, critical project risks resulting from the project complexity, construction of the fault tree for each top, critical risks, logical analysis of the fault tree, quantitative risk assessment applying fuzzy logic and development of risk response strategy. A new methodology for the qualitative and quantitative risk assessment for top, critical risks in complex construction projects was developed. Risk assessment was carried out applying Fuzzy Fault Tree analysis on the example of one top critical risk. Application of the Fuzzy sets theory to the proposed model allowed to decrease uncertainty and eliminate problems with gaining the crisp values of the basic events probability, common during expert risk assessment with the objective to give the exact risk score of each unwanted event probability.

  14. Working capital management in the process of financial support of investment and construction projects and of the construction material industry

    Science.gov (United States)

    Danilochkina, Nadezhda; Lukmanova, Inessa; Roshchina, Olga; Voytolovskiy, Nikolay

    2018-03-01

    The article presents the analysis of working capital in the process of financial support of high-rise construction investment projects. The factors influencing the choice of the working capital management model were analyzed, the reasons of the change in the requirement for the values of current assets in the process of construction of high-rise facilities were determined. The author has developed the scheme of interrelation between production, operational and financial activity cycles of enterprises implementing investment projects of unique buildings and structures and made a comparative description of their financing sources.

  15. Analysis of floor technology scheme in open-top construction of nuclear power project

    International Nuclear Information System (INIS)

    Zhang Shuxia; Lu Qinwu; Han Xiaoping

    2014-01-01

    Open-top construction is general technology in Ⅲ generation in nuclear power project. Because traditional floor structure and its form board upholding doesn't meet open-top construction, four floor scheme are presented, whose characters, advantages and disadvantages, and its application are summarized. The research results will help to the application of open-top construction. (authors)

  16. Construction and updating of a public events questionnaire for repeated measures longitudinal studies

    Directory of Open Access Journals (Sweden)

    Martha eNoone

    2014-03-01

    Full Text Available Impairments of retrospective memory and cases of retrograde amnesia are often seen in clinical settings. A measure of the proportion of memories retained over a specified time can be useful in clinical situations and public events questionnaires may be valuable in this respect. However, consistency of retention of public events memory has rarely been studied in the same participants. In addition, when used in a research context, public events questionnaires require updating to ensure questions are of equivalent age with respect to when the test is taken. This paper describes an approach to constructing and updating a Public Events Questionnaire (PEQ for use with a sample that is recruited and followed-up over a long time-period. Internal consistency, parallel-form reliability, test-retest reliability and secondary validity analyses were examined for three versions of the PEQ that were updated every six months. Versions 2 and 3 of the questionnaire were reliable across and within versions and for recall and recognition. Change over time was comparable across each version of the PEQ. These results show that PEQs can be regularly updated in a standardised fashion to allow use throughout studies with long recruitment periods.

  17. Construction and updating of a public events questionnaire for repeated measures longitudinal studies.

    Science.gov (United States)

    Noone, Martha; Semkovska, Maria; Carton, Mary; Dunne, Ross; Horgan, John-Paul; O'Kane, Breige; McLoughlin, Declan M

    2014-01-01

    Impairments of retrospective memory and cases of retrograde amnesia are often seen in clinical settings. A measure of the proportion of memories retained over a specified time can be useful in clinical situations and public events questionnaires may be valuable in this respect. However, consistency of retention of public events memory has rarely been studied in the same participants. In addition, when used in a research context, public events questionnaires require updating to ensure questions are of equivalent age with respect to when the test is taken. This paper describes an approach to constructing and updating a Public Events Questionnaire (PEQ) for use with a sample that is recruited and followed-up over a long time-period. Internal consistency, parallel-form reliability, test-retest reliability, and secondary validity analyses were examined for three versions of the PEQ that were updated every 6 months. Versions 2 and 3 of the questionnaire were reliable across and within versions and for recall and recognition. Change over time was comparable across each version of the PEQ. These results show that PEQs can be regularly updated in a standardized fashion to allow use throughout studies with long recruitment periods.

  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...... and constrained construction project. Even though several tools have attempted to add structure and to create order, to the complex, dynamic, and uncertain context in which constructions is conducted, none has yet fully succeeded in providing a robust production control system. With outset in the lean tool Last...

  19. Radiation environmental impact assessment of radioactive substances of an airport transit storage construction projects

    International Nuclear Information System (INIS)

    Zhang Baozeng; Xia Zitong; Zou Zhaozhuang

    2014-01-01

    Radioactive substances belong to dangerous goods transport aviation. Radioactive substances impoundments construction purpose is to ensure that the radioactive material during transport to transport and the public to achieve full or isolation, the effects of radiation on the human body, property and the environment caused by the control to an acceptable level. According to the relevant national standards and norms, for radiation protection evaluation of project construction of an airport radioactive impoundments, feasibility of the construction project radiation environment. (authors)

  20. Assessing Environmental Impact Indicators in Road Construction Projects in Developing Countries

    OpenAIRE

    Mohamed Marzouk; Mohamed El-zayat; Ahmed Aboushady

    2017-01-01

    Environmental pollution is considered to be one of the main concerns in the construction industry. Environmental pollution has become a major challenge to construction projects due to the huge amount of pollution caused by construction projects. There are different types of environmental impact indicators, such as the greenhouse gas (GHG) footprint, eutrophication potential (EP), acidification potential (AP), human health (HH) particulate, ozone depletion, and smog. Each of these environmenta...

  1. Quality assurance in the Antares laser fusion construction project

    International Nuclear Information System (INIS)

    Reichelt, W.H.

    1984-01-01

    The Antares CO 2 laser facility came on line in November 1983 as an experimental physics facility; it is the world's largest CO 2 laser fusion system. Antares is a major component of the Department of Energy's Inertial Confinement Fusion Program. Antares is a one-of-a-kind laser system that is used in an experimental environment. Given limited project funds and tight schedules, the quality assurance program was tailored to achieve project goals without imposing oppressive constraints. The discussion will review the Antares quality assurance program and the utility of various portions to completion of the project

  2. 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...

  3. 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.

  4. Nuclear civil construction, an essential activity dedicated to outstanding projects

    International Nuclear Information System (INIS)

    Herve, G.

    2016-01-01

    The complexity of nuclear civil construction is directly linked to the safety requirements imposed on nuclear facilities: durability in terms of time, stability, containment, tightness, managing cracking and leakages, quality controls... These requirements imply specific measures for instance the concrete that is used for the containment building has a particular composition that gives it an enhanced resistance or the substantial thickness of the foundation raft implies monitoring the temperature at which the concrete is poured. The construction of the EPR at the Flamanville site is taken as an example. This construction involves 120.000 tonnes of concrete-reinforcement steels, 400.000 m"3 of concrete, 400 km of pipes and 1600 km of cables. (A.C.)

  5. Purchasing management experience of Haiyang nuclear power project construction period

    International Nuclear Information System (INIS)

    Ma Yuqin

    2013-01-01

    Purchasing is one of the important aspects to ensure the safety and quality of the nuclear power plant. This paper, combining the purchasing peculiarity and purchasing process of Haiyang nuclear power project, summarizes experiences of Haiyang nuclear power project in promoting its purchasing management level in aspects of purchasing method choosing, purchasing plan management, purchasing process optimization, purchasing contract implementation and purchasing surveillance, etc. (author)

  6. Improvement of the cost-benefit analysis algorithm for high-rise construction projects

    Directory of Open Access Journals (Sweden)

    Gafurov Andrey

    2018-01-01

    Full Text Available The specific nature of high-rise investment projects entailing long-term construction, high risks, etc. implies a need to improve the standard algorithm of cost-benefit analysis. An improved algorithm is described in the article. For development of the improved algorithm of cost-benefit analysis for high-rise construction projects, the following methods were used: weighted average cost of capital, dynamic cost-benefit analysis of investment projects, risk mapping, scenario analysis, sensitivity analysis of critical ratios, etc. This comprehensive approach helped to adapt the original algorithm to feasibility objectives in high-rise construction. The authors put together the algorithm of cost-benefit analysis for high-rise construction projects on the basis of risk mapping and sensitivity analysis of critical ratios. The suggested project risk management algorithms greatly expand the standard algorithm of cost-benefit analysis in investment projects, namely: the “Project analysis scenario” flowchart, improving quality and reliability of forecasting reports in investment projects; the main stages of cash flow adjustment based on risk mapping for better cost-benefit project analysis provided the broad range of risks in high-rise construction; analysis of dynamic cost-benefit values considering project sensitivity to crucial variables, improving flexibility in implementation of high-rise projects.

  7. Improvement of the cost-benefit analysis algorithm for high-rise construction projects

    Science.gov (United States)

    Gafurov, Andrey; Skotarenko, Oksana; Plotnikov, Vladimir

    2018-03-01

    The specific nature of high-rise investment projects entailing long-term construction, high risks, etc. implies a need to improve the standard algorithm of cost-benefit analysis. An improved algorithm is described in the article. For development of the improved algorithm of cost-benefit analysis for high-rise construction projects, the following methods were used: weighted average cost of capital, dynamic cost-benefit analysis of investment projects, risk mapping, scenario analysis, sensitivity analysis of critical ratios, etc. This comprehensive approach helped to adapt the original algorithm to feasibility objectives in high-rise construction. The authors put together the algorithm of cost-benefit analysis for high-rise construction projects on the basis of risk mapping and sensitivity analysis of critical ratios. The suggested project risk management algorithms greatly expand the standard algorithm of cost-benefit analysis in investment projects, namely: the "Project analysis scenario" flowchart, improving quality and reliability of forecasting reports in investment projects; the main stages of cash flow adjustment based on risk mapping for better cost-benefit project analysis provided the broad range of risks in high-rise construction; analysis of dynamic cost-benefit values considering project sensitivity to crucial variables, improving flexibility in implementation of high-rise projects.

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

    OpenAIRE

    Li, Ming; Wu, Guangdong

    2014-01-01

    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 illus...

  9. A project management quality cost information system for the construction industry

    OpenAIRE

    Love, PED; Irani, Z

    2003-01-01

    A prototype Project Management Quality Cost System (PROMQACS) was developed to determine quality costs in construction projects. The structure and information requirements that are needed to provide a classification system of quality costs were identified and discussed. The developed system was tested and implemented in two case study construction projects to determine the information and management issues needed to develop PROMQACS into a software program. In addition, the system was used to...

  10. 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.

  11. 40 CFR 40.145-3 - Projects involving construction.

    Science.gov (United States)

    2010-07-01

    ... work may be negotiated when advertising for competitive bids is not feasible; however, the grantee must... to prior approval by the grants officer. (e) Construction work will be performed by the fixed-price...-of-cost method of contracting shall not be used. Adequate methods of advertising for and obtaining...

  12. Dictionary construction and identification of possible adverse drug events in Danish clinical narrative text.

    Science.gov (United States)

    Eriksson, Robert; Jensen, Peter Bjødstrup; Frankild, Sune; Jensen, Lars Juhl; Brunak, Søren

    2013-01-01

    Drugs have tremendous potential to cure and relieve disease, but the risk of unintended effects is always present. Healthcare providers increasingly record data in electronic patient records (EPRs), in which we aim to identify possible adverse events (AEs) and, specifically, possible adverse drug events (ADEs). Based on the undesirable effects section from the summary of product characteristics (SPC) of 7446 drugs, we have built a Danish ADE dictionary. Starting from this dictionary we have developed a pipeline for identifying possible ADEs in unstructured clinical narrative text. We use a named entity recognition (NER) tagger to identify dictionary matches in the text and post-coordination rules to construct ADE compound terms. Finally, we apply post-processing rules and filters to handle, for example, negations and sentences about subjects other than the patient. Moreover, this method allows synonyms to be identified and anatomical location descriptions can be merged to allow appropriate grouping of effects in the same location. The method identified 1 970 731 (35 477 unique) possible ADEs in a large corpus of 6011 psychiatric hospital patient records. Validation was performed through manual inspection of possible ADEs, resulting in precision of 89% and recall of 75%. The presented dictionary-building method could be used to construct other ADE dictionaries. The complication of compound words in Germanic languages was addressed. Additionally, the synonym and anatomical location collapse improve the method. The developed dictionary and method can be used to identify possible ADEs in Danish clinical narratives.

  13. 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.

  14. 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.

  15. Mapping of information and identification of construction waste at project life cycle

    Science.gov (United States)

    Wibowo, Mochamad Agung; Handayani, Naniek Utami; Nurdiana, Asri; Sholeh, Moh Nur; Pamungkas, Gita Silvia

    2018-03-01

    The development of construction project towards green construction is needed in order to improve the efficiency of construction projects. One that needs to be minimized is construction waste. Construction waste is waste generated from construction project activities, both solid waste and non solid waste. More specifically, the waste happens at every phase of the project life cycle. Project life cycle are the stage of idea, design, construction, and operation/maintenance. Each phase is managed by different stakeholders. Therefore it requires special handling from the involved stakeholders. The objective of the study is to map the information and identify the waste at each phase of the project life cycle. The purpose of mapping is to figure out the process of information and product flow and with its timeline. This mapping used Value Stream Mapping (VSM). Identification of waste was done by distributing questionnaire to respondents to know the waste according to owner, consultant planner, contractor, and supervisory consultant. The result of the study is the mapping of information flow and product flow at the phases of idea, design, construction, and operation/ maintenance.

  16. Exploitation of cloud computing in management of construction projects in Slovakia

    Directory of Open Access Journals (Sweden)

    Mandičák Tomáš

    2016-12-01

    Full Text Available 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 construction industry has not yet been carried out. The article discusses the issue of exploitation of cloud computing in construction project management in Slovakia. The main objective of the research is to confirm whether factors such as size of construction enterprise, owner of construction enterprise and participant of construction project have any impact on the exploitation level of cloud computing in construction project management. It includes confirmation of differences in use between different participants of the construction project or between construction enterprises broken down by size and shareholders.

  17. DISPUTE RESOLUTION MECHANISM IN COMMERCIAL CONSTRUCTION PROJECTS: A REVIEW

    OpenAIRE

    Priyanka Sakate*, Dr.Arun W. Dhawale

    2017-01-01

    The number and complexity of contract disputes have increased dramatically in recent years. At the same time, the delays and costs associated with litigation have become more significant. This section provides an overview of dispute resolution methods commonly used. The increasing trend to alternative methods of resolving disputes suggests a considerable dissatisfaction with the traditional litigation process, at least in certain types of construction cases. However, it must be emphasized tha...

  18. Green Performance Contracting Strategy for Highway Construction Projects

    OpenAIRE

    2014-01-01

    With the growing awareness of sustainability and global climate change, state highway agencies are taking essential steps to reduce carbon emissions from highway infrastructure on a life cycle basis. While much is known regarding climate change mitigation and adaption strategies during highway operation, very little is understood about how climate change issues should be integrated into highway planning, delivery, and construction processes. This paper presents the current contracting pra...

  19. Analysis of Air Force Wartime Contracted Construction Project Performance

    Science.gov (United States)

    2015-03-26

    KPIs ) identified in current literature. Chan’s meta-analysis of KPIs found that time and cost are the primary objective indicators of a successful...Smith, Currie & Hancock, 2009). 46 Key performance indicators ( KPI ) were also used as input factors to analyze differences between contracts...Chan, et al. (2002) performed a meta-analysis of KPIs , as determined by construction researchers. They found that the most predictive performance

  20. IT Requirements Integration in High-Rise Construction Design Projects

    Science.gov (United States)

    Levina, Anastasia; Ilin, Igor; Esedulaev, Rustam

    2018-03-01

    The paper discusses the growing role of IT support for the operation of modern high-rise buildings, due to the complexity of managing engineering systems of buildings and the requirements of consumers for the IT infrastructure. The existing regulatory framework for the development of design documentation for construction, including high-rise buildings, is analyzed, and the lack of coherence in the development of this documentation with the requirements for the creation of an automated management system and the corresponding IT infrastructure is stated. The lack of integration between these areas is the cause of delays and inefficiencies both at the design stage and at the stage of putting the building into operation. The paper proposes an approach to coordinate the requirements of the IT infrastructure of high-rise buildings and design documentation for construction. The solution to this problem is possible within the framework of the enterprise architecture concept by coordinating the requirements of the IT and technological layers at the design stage of the construction.

  1. The Construction Site Project: Transforming Early Childhood Teacher Practice

    Science.gov (United States)

    McNaughton, Kathryn; Krentz, Caroline

    2007-01-01

    The work of Malaguzzi (in Edwards, Gandini, & Forman, 1998; Fraser, 2006) has made the fundamentals of the preschools of Reggio Emilia familiar to many early childhood educators. The article describes an authentic project that enhanced undergraduate and postgraduate participants' understanding of the impact of collaboration, conversation, and…

  2. Infrastructure under construction: continuous improvement and learning in projects

    NARCIS (Netherlands)

    Gieskes, J.F.B.; ten Broeke, André M.

    2000-01-01

    Continuous improvement and learning are popular concepts in management literature and practice. Often they are situated in an environment where the work is of a repetitive nature. However, there are a lot of organisations where (part of) the primary processes are carried out by means of projects. An

  3. 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.

  4. Collaborative Management of Complex Major Construction Projects: AnyLogic-Based Simulation Modelling

    Directory of Open Access Journals (Sweden)

    Na Zhao

    2016-01-01

    Full Text Available Complex supply chain system collaborative management of major construction projects effectively integrates the different participants in the construction project. This paper establishes a simulation model based on AnyLogic to reveal the collaborative elements in the complex supply chain management system and the modes of action as well as the transmission problems of the intent information. Thus it is promoting the participants to become an organism with coordinated development and coevolution. This study can help improve the efficiency and management of the complex system of major construction projects.

  5. Risk assessment framework on time impact: Infrastructure projects in soft soil during construction stage

    Science.gov (United States)

    Low, W. W.; Wong, K. S.; Lee, J. L.

    2018-04-01

    With the growth of economy and population, there is an increase in infrastructure construction projects. As such, it is unavoidable to have construction projects on soft soil. Without proper risk management plan, construction projects are vulnerable to different types of risks which will have negative impact on project’s time, cost and quality. Literature review showed that little or none of the research is focused on the risk assessment on the infrastructure project in soft soil. Hence, the aim of this research is to propose a risk assessment framework in infrastructure projects in soft soil during the construction stage. This research was focused on the impact of risks on project time and internal risk factors. The research method was Analytical Hierarchy Process and the sample population was experienced industry experts who have experience in infrastructure projects. Analysis was completed and result showed that for internal factors, the five most significant risks on time element are lack of special equipment, potential contractual disputes and claims, shortage of skilled workers, delay/lack of materials supply, and insolvency of contractor/sub-contractor. Results indicated that resources risk factor play a critical role on project time frame in infrastructure projects in soft soil during the construction stage.

  6. 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.

  7. Geopolitical model of investment power station construction project implementation

    Science.gov (United States)

    Malafeyev, Oleg; Farvazov, Konstantin; Zenovich, Olga; Zaitseva, Irina; Kostyukov, Konstantin; Svechinskaya, Tatiana

    2018-04-01

    Two geopolitical actors implement a geopolitical project that involves transportaion and storage of some commodities. They interact with each other through a transport network. The network consists of several interconnected vertices. Some of the vetrices are trading hubs, storage spaces, production hubs and goods buyers. Actors wish to satify the demand of buyers and recieve the highest possible profit subject to compromise solution principle. A numerical example is given.

  8. Stakeholders Assessment of Constraints to Project Delivery in the Nigerian Construction Industry

    Directory of Open Access Journals (Sweden)

    Bruno L. Tanko

    2017-01-01

    Full Text Available The central goal of construction stakeholders is to successfully deliver projects to stated objective (s. However, for decades, construction projects have been plagued by perennial constraints of cost and time overruns, poor quality, and lack of sustainability. The objective of this paper is to identify and assess the constraints to construction project delivery, and to recommend solutions to enhance project performance. This paper adopted both quantitative and qualitative methods to establish the constraints in the Nigerian construction industry. A pilot survey and literature reviewed revealed a total of fifty (50 construction constraints, which were further classified into eight (8 major groups. Well-structured questionnaires were administered to construction stakeholders (client, consultant and contractor in Abuja, the federal capital city of Nigeria. Relative Importance Index (RII was used to analyze the data using Likert scale.  The results suggest that cost/time overrun related factors (inability to reduce project cost, Stakeholders interactive-related factors (inability to establish client value system, Client-related factors (Delay in interim payment and finance problem, and Labor/material-related factors (escalation of material prices and materials quality variability are the most prevalent constraints in the Nigerian construction environment.  To mitigate the effects of these challenges, it is suggested that a formal innovative approach should be used by stakeholders to address the problems of poor communication, high project cost, and delay. Clients should also take measures to provide adequate funding and should promptly honor interim certificates.

  9. 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.

  10. Project plan for PACS networking construction and cabling

    International Nuclear Information System (INIS)

    Luo Min; Wang Xiaolin; Luo Song; Lei Wenyong; Wang Xuejian; Wen Hongyue; Wu Hongxing

    2002-01-01

    Objective: To meet the networking requirement of the heave data flow, load balance, and potential networking storm during expanding the application of PACS. Methods: Intel Net Structure 480T Giga Switch was used as main switch and connected to each building by optical channel at 1 Giga speed to archive 100 MB/s to each port. At the same time, the in dependence of the original networking construction was physically kept. The layer 3 and 4 switchers was used as load balance to reduce the heavy load of the networking, and all the cabling for PACS used the super CAT5 along with the Intel Net Structure 1520 to prepare for the potential networking storm. Results: An advanced intranet was set up to fully meet the high standard requirement of PACS. The good foundation for upgrading the whole networking system to 1 Giga application was built for realized share and transmission of image, information, and patient data within the hospital. The base was established for the standardized management of the hospital. Conclusion: Good planning is the 1 st step in setting up PACS and the equipment are the platform to run PACS and all kinds of HIS. The networking construction is the foundation of e-hospitals

  11. A new approach for modelling variability in residential construction projects

    Directory of Open Access Journals (Sweden)

    Mehrdad Arashpour

    2013-06-01

    Full Text Available The construction industry is plagued by long cycle times caused by variability in the supply chain. Variations or undesirable situations are the result of factors such as non-standard practices, work site accidents, inclement weather conditions and faults in design. This paper uses a new approach for modelling variability in construction by linking relative variability indicators to processes. Mass homebuilding sector was chosen as the scope of the analysis because data is readily available. Numerous simulation experiments were designed by varying size of capacity buffers in front of trade contractors, availability of trade contractors, and level of variability in homebuilding processes. The measurements were shown to lead to an accurate determination of relationships between these factors and production parameters. The variability indicator was found to dramatically affect the tangible performance measures such as home completion rates. This study provides for future analysis of the production homebuilding sector, which may lead to improvements in performance and a faster product delivery to homebuyers.

  12. A new approach for modelling variability in residential construction projects

    Directory of Open Access Journals (Sweden)

    Mehrdad Arashpour

    2013-06-01

    Full Text Available The construction industry is plagued by long cycle times caused by variability in the supply chain. Variations or undesirable situations are the result of factors such as non-standard practices, work site accidents, inclement weather conditions and faults in design. This paper uses a new approach for modelling variability in construction by linking relative variability indicators to processes. Mass homebuilding sector was chosen as the scope of the analysis because data is readily available. Numerous simulation experiments were designed by varying size of capacity buffers in front of trade contractors, availability of trade contractors, and level of variability in homebuilding processes. The measurements were shown to lead to an accurate determination of relationships between these factors and production parameters. The variability indicator was found to dramatically affect the tangible performance measures such as home completion rates. This study provides for future analysis of the production homebuilding sector, which may lead to improvements in performance and a faster product delivery to homebuyers. 

  13. Engaged scholarship in construction management research: the adoption of information and communications technology in construction projects

    NARCIS (Netherlands)

    Voordijk, Johannes T.; Adriaanse, Adriaan Maria

    2016-01-01

    The objective is to explore what engaged scholarship (ES) could mean for construction management research in facilitating interactions between practice and theory. ES aims to develop knowledge that advances both science and practice through engagement of scholars with practice. Three types of ES are

  14. 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.

  15. Risk Consideration and Cost Estimation in Construction Projects Using Monte Carlo Simulation

    Directory of Open Access Journals (Sweden)

    Claudius A. Peleskei

    2015-06-01

    Full Text Available Construction projects usually involve high investments. It is, therefore, a risky adventure for companies as actual costs of construction projects nearly always exceed the planed scenario. This is due to the various risks and the large uncertainty existing within this industry. Determination and quantification of risks and their impact on project costs within the construction industry is described to be one of the most difficult areas. This paper analyses how the cost of construction projects can be estimated using Monte Carlo Simulation. It investigates if the different cost elements in a construction project follow a specific probability distribution. The research examines the effect of correlation between different project costs on the result of the Monte Carlo Simulation. The paper finds out that Monte Carlo Simulation can be a helpful tool for risk managers and can be used for cost estimation of construction projects. The research has shown that cost distributions are positively skewed and cost elements seem to have some interdependent relationships.

  16. Measurement plan and observational construction program on drift excavation at the Horonobe Underground Research Laboratory project

    International Nuclear Information System (INIS)

    Yamasaki, Masanao; Yamaguchi, Takehiro; Funaki, Hironori; Fujikawa, Daisuke; Tsusaka, Kimikazu

    2008-09-01

    The Horonobe URL Project is being pursued by the Japan Atomic Energy Agency (JAEA) to enhance the reliability of relevant disposal technologies through investigations of the deep geological environment within the host sedimentary formations at Horonobe, northern Hokkaido. The project consists of two major research areas, 'Geoscientific Research' and 'R and D' on Geological Disposal', and proceeds in three overlapping phases, 'Phase I: Surface-based investigation', 'Phase II: Construction' and 'Phase III: Operation', over a period of 20 years. On the Horonobe URL Project, 'Phase 1' was finished in 2005FY and construction of the underground facility was started since then. Now, 'Phase 2' (investigations during construction of the underground facilities) is on-going. On the 'Development of engineering techniques for use in the deep underground environment' in Phase 1, based on the various types of data acquired on investigations from the surface, the design of underground facility in advance was planned. At the inception of the Phase II investigations, an investigation report titled 'Measurement Plan and Observational Construction Program on Shaft Excavation at the Horonobe URL Project' (hereinafter referred to as 'Observational Construction Program') was published. The Observational Construction Program summarizes followings from the Phase I investigations: measurements for safety/reasonable construction, measurements for R and D on enhancement of shaft design/construction technology, and measurements for verification of the deep geological environment model estimated before shaft excavation, and it is on-going. This report summarizes the measurement plan during construction of drifts based on the design in advance and the observational construction program for feedback measurements data into design and construction on subsequent steps. This report also describes about design and construction management program of underground facility and R and D program on

  17. Dictionary construction and identification of possible adverse drug events in Danish clinical narrative text

    Science.gov (United States)

    Eriksson, Robert; Jensen, Peter Bjødstrup; Frankild, Sune; Jensen, Lars Juhl; Brunak, Søren

    2013-01-01

    Objective Drugs have tremendous potential to cure and relieve disease, but the risk of unintended effects is always present. Healthcare providers increasingly record data in electronic patient records (EPRs), in which we aim to identify possible adverse events (AEs) and, specifically, possible adverse drug events (ADEs). Materials and methods Based on the undesirable effects section from the summary of product characteristics (SPC) of 7446 drugs, we have built a Danish ADE dictionary. Starting from this dictionary we have developed a pipeline for identifying possible ADEs in unstructured clinical narrative text. We use a named entity recognition (NER) tagger to identify dictionary matches in the text and post-coordination rules to construct ADE compound terms. Finally, we apply post-processing rules and filters to handle, for example, negations and sentences about subjects other than the patient. Moreover, this method allows synonyms to be identified and anatomical location descriptions can be merged to allow appropriate grouping of effects in the same location. Results The method identified 1 970 731 (35 477 unique) possible ADEs in a large corpus of 6011 psychiatric hospital patient records. Validation was performed through manual inspection of possible ADEs, resulting in precision of 89% and recall of 75%. Discussion The presented dictionary-building method could be used to construct other ADE dictionaries. The complication of compound words in Germanic languages was addressed. Additionally, the synonym and anatomical location collapse improve the method. Conclusions The developed dictionary and method can be used to identify possible ADEs in Danish clinical narratives. PMID:23703825

  18. 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.

  19. 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.

  20. 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.

  1. Study on evaluation of construction reliability for engineering project based on fuzzy language operator

    Science.gov (United States)

    Shi, Yu-Fang; Ma, Yi-Yi; Song, Ping-Ping

    2018-03-01

    System Reliability Theory is a research hotspot of management science and system engineering in recent years, and construction reliability is useful for quantitative evaluation of project management level. According to reliability theory and target system of engineering project management, the defination of construction reliability appears. Based on fuzzy mathematics theory and language operator, value space of construction reliability is divided into seven fuzzy subsets and correspondingly, seven membership function and fuzzy evaluation intervals are got with the operation of language operator, which provides the basis of corresponding method and parameter for the evaluation of construction reliability. This method is proved to be scientific and reasonable for construction condition and an useful attempt for theory and method research of engineering project system reliability.

  2. Construction progress of the cooling & ventilation in the LHC project

    CERN Document Server

    Body, Y; Josa, F; Monsted, A; Pirollet, B; CERN. Geneva. ST Division

    2002-01-01

    After the LEP dismantling Phase the Cooling and Ventilation Group has started the LHC construction work. Year 2001 through to 2004 will certainly be the most important period of activity for the CV group in the erection phase The author will report on the current works that are in progress on the different LHC Points distinguishing between the Ventilation and the Water Cooling installations. The Ventilation work completed in the new surface buildings in Points 1, 4,5,6 and 8. The work for the Cooling plants comprehend to the pumping stations, the cooling towers and the chilled water production stations in Points 1 and 5, For all of these activities, an updated report of the progress the work, the planning and of the expenses are given. Finally, a brief overview of the future activities is presented.

  3. Evaluation of data requirements for computerized constructability analysis of pavement rehabilitation projects.

    Science.gov (United States)

    2013-08-01

    This research aimed to evaluate the data requirements for computer assisted construction planning : and staging methods that can be implemented in pavement rehabilitation projects in the state of : Georgia. Results showed that two main issues for the...

  4. 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.

  5. Radioactive environmental impact assessment for a highway construction project in Guangdong province

    International Nuclear Information System (INIS)

    Qiu Guohua

    2009-01-01

    Based on the field environmental investigation and monitoring result, the radioactive environmental impact for a highway construction project in Guangdong province has been analyzed and assessed and forecacted. (authors)

  6. Design and Implementation of Green Construction Scheme for a High-rise Residential Building Project

    Science.gov (United States)

    Zhou, Yong; Huang, You Zhen

    2018-06-01

    This paper mainly studies the green construction scheme of a high-rise residential building project. From "four sections one environmental protection", saving material, water saving, energy saving, economical use of land and environmental protection conduct analysis and research. Adopting scientific, advanced, reasonable and economical construction technology measures, implementing green construction method. Promoting energy-saving technologies in buildings, ensuring the sustainable use of resources, Maximum savings of resources and energy, increase energy efficiency, to reduce pollution, reducing the adverse environmental impact of construction activities, ensure construction safety, build sustainable buildings.

  7. Study on modular construction management in AP1000 nuclear plant project

    International Nuclear Information System (INIS)

    Fang Xiaopeng; Shen Wenrong; Sun Kebin; Wei Zhong

    2010-01-01

    The construction of AP1000 Nuclear Power Plant (NPP) has commenced in China. The AP1000 NPP features a passive design concept and modular construction technology. Based on the management of the construction of current AP1000 NNP, this paper describes the effects on Nuclear Island (NI) construction project management resulting from modular construction technology, as well as new construction techniques and methods. This paper puts forward new requirements for construction schedule management of the nuclear island construction at different levels. The AP1000 NI construction logic features the parallel construction of civil and structural erection as the main approach, with the integrated schedule of module fabrication, assembly and installation as support. The structural modules of AP1000 project are prefabricated in shop, delivered to site as sub-modules and assembled to integrated structural module. The assembled module is transported to the construction site, hoisted and finally set in NI. This paper illustrates how to ensure the construction quality of structural modules by analyzing the interface process and key links in the quality control program, and introduces how to ensure the safety of heavy structural components during various construction phases by evaluating and analyzing the construction safety process. This paper also makes an analysis of the safe environment for the assembly and installation of Containment Vessel, the management of product protection and personnel safety inside the Containment Building during 'Open Top' construction, raises to implement effective protection for the numerous pre-set mechanical modules and equipments, as well as personnel safety protection programs and measures. The modular construction feature of AP1000 NPP design requires technique improvement and management innovation during the NI construction. This paper makes a study and research on the control management of schedule, quality and safety of AP1000 NPP NI

  8. A Program Applying Professional Safety Basics in Construction Projects

    Directory of Open Access Journals (Sweden)

    Entisar Kadhim Rasheed

    2016-04-01

    Full Text Available When industrial and constructional renaissance started in the world, the great interest was going on towards the equipment’s, which was the first mean for production. After industry was settled the interest was going on towards the men ship which manpower on which the production depends. It was approved that it represents the basic part in all of the processes and the protection of those individuals against dangers of these equipment’s, industry and its accidents was the basic things which was studied in many researches until it crystallized in general principles for all industries and other take care in each industry. The professional safety is concerned as restrict which aims to take care of humanitarian and material principles also to raise the production of these principles, in the aspect of safety, health and providing the suitable healthy condition to the worker so he can feel safety, confidence and sociological settle, this will increase the production. So In order to maintain the manpower of business risks and to enable them to fulfill their role better to increase production and improve the quality and maintain the machine and supporting the national economy and keep pace with industrial developments and technological came the idea of research to focus on the importance of studying the subject of occupational safety by conducting a field survey to see the reality of professional safety in the relevant departments and work sites and through a questionnaire on the subject and conduct personal interviews with those concerned in this area and to prepare a program for the application of professional safety for each resource (labor, machines, materials, money in construction sites and departments concerned.

  9. The application of post-project reviews in events management by cultural operators

    OpenAIRE

    Benadict Rajasegaram, Annet

    2016-01-01

    Organisations have evidently shifted towards the projectification of their activities and operations across the world and across industries by which project management is not only limited to construction and engineering projects anymore. The projectification has shed light on the amount of project success and failure in which both have been noted to have a steep difference between each other. Whilst many factors have been discovered to be a trigger of failure or success one emerging subject t...

  10. 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

    that electronic communication technology was vital within the project. Additionally the SSETI EXPRESS project implied the following problems it didn’t fit to a standard semester - 18 months for the satellite project compared to 5/6 months for a “normal” semester project. difficulties in integrating the tasks......A LARGE SCALE PROBLEM BASED LEARNING INTER-EUROPEAN STUDENT SATELLITE CONSTRUCTION PROJECT This paper describes the pedagogical outcome of a large scale PBL experiment. ESA (European Space Agency) Education Office launched January 2004 an ambitious project: Let students from all over Europe build....... 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...

  11. Schema Driven Construction of Future Autobiographical Traumatic Events: The Future is Much More Troubling than the Past

    Science.gov (United States)

    Rubin, David C.

    2013-01-01

    Research on future episodic thought has produced compelling theories and results in cognitive psychology, cognitive neuroscience, and clinical psychology. To integrate these using basic concepts and methods from autobiographical memory research, 76 undergraduates remembered past and imagined future positive and negative events that had or would have a major impact on them. Correlations of the online ratings of visual and auditory imagery, emotion, and other measures demonstrated that individuals used the same processes to the same extent to remember past and construct future events. These measures predicted the theoretically important metacognitive judgment of past reliving and future ‘preliving’ in similar ways. Future negative events had much higher scores than past negative events on standardized tests of reactions to traumatic events, scores in the range that would qualify for a diagnosis of posttraumatic stress disorder (PTSD), which was replicated (n = 52) to check for order effects. Consistent with earlier work, future events had less sensory vividness. Thus, the imagined symptoms of future events were unlikely to be caused by sensory vividness. To confirm this, 63 undergraduates produced numerous added details between two constructions of the same negative future events, removing deficits in rated vividness with no increase in the standardized tests of reactions to traumatic events. Neuroticism predicted individuals’ reactions to negative past events but did not predict imagined reactions to future events. This set of novel methods and findings are interpreted in the contexts of the literatures of episodic future thought, autobiographical memory, PTSD, and classic schema theory. PMID:23607632

  12. 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

    Professional organizations, companies, educational and research institutions of the construction industry and the government have been driving initiatives and participated in the debate on the future of the construction industry. The state has participated in the construction industry development...... 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...

  13. Evaluating construction projects of hotels based on environmental sustainability with MCDM framework

    Directory of Open Access Journals (Sweden)

    Sarfaraz Hashemkhani Zolfani

    2018-03-01

    Full Text Available Environmental issues have got incredible attention among daily life activities. Sustainability penetrated in all society practices specially construction industry due to its substantial impact on the environment. Monitoring and controlling architectural project contains a decision problem with multi-varieties analysis. This study aimed to evaluate construction projects of hotels regarding environmental sustainability. To this end, a hybrid Multiple Criteria Decision Making (MCDM model is proposed. Step‐wise Weight Assessment Ratio Analysis (SWARA and Complex proportional assessment (COPRAS compose a unified framework. A private construction project is supposed as a case study. The project is based on establishing a five star hotel in Tehran, Iran. In this research SWARA produces criteria weights and COPRAS will rank decision alternatives. This study can be a strategic route for other similar researches in other fields. Keywords: Architecture projects, Sustainability, Environmental sustainability, SWARA, COPRAS

  14. 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…

  15. 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...

  16. 42 CFR 137.294 - What is the typical IHS environmental review process for construction projects?

    Science.gov (United States)

    2010-10-01

    ... SELF-GOVERNANCE Construction Nepa Process § 137.294 What is the typical IHS environmental review... impact on the environment, and therefore do not require environmental impact statements (EIS). Under current IHS procedures, an environmental review is performed on all construction projects. During the IHS...

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

    Science.gov (United States)

    2017-01-01

    welfare, and recreation activities such as recreation centers; food , beverage , and entertainment programs; and recreational lodging. Private...fast food restaurants. Because these projects are not authorized and funded through the regular appropriations process for military construction...commissaries.8 These funds can be used for various specified purposes, including the construction of commissaries.9 DOD commissaries are managed by

  18. Assessing construction project performance in Ghana : modelling practitioners' and clients perspectives

    NARCIS (Netherlands)

    Gyadu-Asiedu, W.

    2009-01-01

    Several countries at various levels of socio-economic development have recognised the need and importance of taking measures to improve the performance of their construction industry. One of the means to this end has been to ensure performance efficiency in construction project execution. As has

  19. Causes of delays on Construction Projects in Kuwait according to opinion of engineers working in Kuwait

    OpenAIRE

    Naser S. Almutairi

    2016-01-01

    This paper presents an investigation into analysis of the causes of delays on Construction Projects in Kuwait according to opinion of engineers working in Kuwait. This is achieved through identification of the major causes of delays in the construction industry as reported in literature and using a questionnaire survey to collect the views of the various key players in the Kuwaiti construction industry. The data is analyzed and the views of the groups surveyed discussed and the relative impor...

  20. A study of best management practices for enhancing productivity in building projects: construction methods perspectives

    OpenAIRE

    Gurmu, Argaw Tarekegn; Aibinu, Ajibade Ayodeji; Chan, Toong Khuan

    2016-01-01

    This research investigates management practices that have the potential to enhance productivity in building projects by focusing on construction methods. In phase 1 of the study, face-to-face interviews with nineteen experts were conducted to identify the best management practices for construction methods. The qualitative data analysis reached saturation and resulted in a list of best practices for construction methods that are relevant to the local industry. The second phase used an industry...

  1. Identification of risk factors affecting construction of projects: The case of emerging economy

    Directory of Open Access Journals (Sweden)

    Chipo Mellania Maseko

    2017-12-01

    Full Text Available Controlling project risks has become a daunting task in construction and this can be attributed to issues such as the nature of modern projects. The challenge is that risk appears unannounced at any project phase for various reasons and thereby affecting the performance and the success of unprepared projects. The current studies that explored risk matters include Pehlivan and Öztemir (2015, Katre, and Ghaitidak (2016 amongst others. However, there is absence of unanimity from these studies on risk factors in construction. Thus, this article was instigated in order to identify and classify risk factors that affect the chances of project success. The research methodology selected for this article comprised of peer-reviewed articles between the periods of 2007 to 2017. This approach involved a comprehensive scrutiny into scholarly articles to comprehend risks in construction projects. Following a conceptual analysis, eighty factors were identified and classified under the following; technical, construction, financial, socio-political, physical, organisational, and environmental and other risks. From these categories, political instability was, found to be the most influential risk factor in construction projects and this factor was classified within the socio-political category and this category has total of 11 factors. Finding suggests the need for further empirical study.

  2. Principles for the formation of an effective concept of multifunctional high-rise construction investment projects

    Directory of Open Access Journals (Sweden)

    Beliakov Sergei

    2018-01-01

    Full Text Available Investment projects of high-rise construction have a number of features that determine specific risks and additional opportunities that require analysis and accounting in the formation of an effective project concept. The most significant features of high-rise construction include long construction time, complexity of technical and technological solutions, complexity of decisions on the organization of construction and operation, high cost of construction and operation, complexity in determining the ratio of areas designed to accommodate different functional areas, when organizing and coordinating the operation of the facility, with internal zoning. Taking into account the specificity of high-rise construction, among the factors determining the effectiveness of projects, it is advisable to consider as key factors: organizational, technological and investment factors. Within the framework of the article, the author singled out key particular functions for each group of factors under consideration, and also developed a system of principles for the formation of an effective concept of multifunctional high-rise construction investment projects, including the principle of logistic efficiency, the principle of optimal functional zoning, the principle of efficiency of equipment use, the principle of optimizing technological processes, the principle maximization of income, the principle of fund management, the principle of risk management . The model of formation of an effective concept of investment projects of multifunctional high-rise construction developed by the author can contribute to the development of methodological tools in the field of managing the implementation of high-rise construction projects, taking into account their specificity in the current economic conditions.

  3. Principles for the formation of an effective concept of multifunctional high-rise construction investment projects

    Science.gov (United States)

    Beliakov, Sergei

    2018-03-01

    Investment projects of high-rise construction have a number of features that determine specific risks and additional opportunities that require analysis and accounting in the formation of an effective project concept. The most significant features of high-rise construction include long construction time, complexity of technical and technological solutions, complexity of decisions on the organization of construction and operation, high cost of construction and operation, complexity in determining the ratio of areas designed to accommodate different functional areas, when organizing and coordinating the operation of the facility, with internal zoning. Taking into account the specificity of high-rise construction, among the factors determining the effectiveness of projects, it is advisable to consider as key factors: organizational, technological and investment factors. Within the framework of the article, the author singled out key particular functions for each group of factors under consideration, and also developed a system of principles for the formation of an effective concept of multifunctional high-rise construction investment projects, including the principle of logistic efficiency, the principle of optimal functional zoning, the principle of efficiency of equipment use, the principle of optimizing technological processes, the principle maximization of income, the principle of fund management, the principle of risk management . The model of formation of an effective concept of investment projects of multifunctional high-rise construction developed by the author can contribute to the development of methodological tools in the field of managing the implementation of high-rise construction projects, taking into account their specificity in the current economic conditions.

  4. 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.

  5. Learning Based on the Project Entitled "Design and Construction of a Wooden Bridge"

    Science.gov (United States)

    Barris, Cristina; Torres, Lluís; Simon, Enric

    2016-01-01

    This article presents the results of a case involving the application of project-based learning carried out with students in the Mechanical Engineering degree program at the University of Girona. The project, entitled "Design and construction of a wooden bridge", was conducted at the Polytechnic School in the third-year Structures…

  6. 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…

  7. Effectiveness of innovation leadership styles: a manager's influence on ecological innovation in construction projects

    OpenAIRE

    Bossink, B.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...

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

    International Nuclear Information System (INIS)

    Huelsen, H.; Hayen, W.

    1987-01-01

    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.) [de

  9. Changes in record-breaking temperature events in China and projections for the future

    Science.gov (United States)

    Deng, Hanqing; Liu, Chun; Lu, Yanyu; He, Dongyan; Tian, Hong

    2017-06-01

    As global warming intensifies, more record-breaking (RB) temperature events are reported in many places around the world where temperatures are higher than ever before http://cn.bing.com/dict/search?q=.&FORM=BDVSP6&mkt=zh-cn. The RB temperatures have caused severe impacts on ecosystems and human society. Here, we address changes in RB temperature events occurring over China in the past (1961-2014) as well as future projections (2006-2100) using observational data and the newly available simulations from the Coupled Model Intercomparison Project Phase 5 (CMIP5). The number of RB events has a significant multi-decadal variability in China, and the intensity expresses a strong decrease from 1961 to 2014. However, more frequent RB events occurred in mid-eastern and northeastern China over last 30 years (1981-2010). Comparisons with observational data indicate multi-model ensemble (MME) simulations from the CMIP5 model perform well in simulating RB events for the historical run period (1961-2005). CMIP5 MME shows a relatively larger uncertainty for the change in intensity. From 2051 to 2100, fewer RB events are projected to occur in most parts of China according to RCP 2.6 scenarios. Over the longer period from 2006 to 2100, a remarkable increase is expected for the entire country according to RCP 8.5 scenarios and the maximum numbers of RB events increase by approximately 600 per year at end of twenty-first century.

  10. 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.

  11. Quantitative Decision Making Model for Carbon Reduction in Road Construction Projects Using Green Technologies

    Directory of Open Access Journals (Sweden)

    Woosik Jang

    2015-08-01

    Full Text Available Numerous countries have established policies for reducing greenhouse gas emissions and have suggested goals pertaining to these reductions. To reach the target reduction amounts, studies on the reduction of carbon emissions have been conducted with regard to all stages and processes in construction projects. According to a study on carbon emissions, the carbon emissions generated during the construction stage of road projects account for approximately 76 to 86% of the total carbon emissions, far exceeding the other stages, such as maintenance or demolition. Therefore, this study aims to develop a quantitative decision making model that supports the application of green technologies (GTs to reduce carbon emissions during the construction stage of road construction projects. First, the authors selected environmental soundness, economic feasibility and constructability as the key assessment indices for evaluating 20 GTs. Second, a fuzzy set/qualitative comparative analysis (FS/QCA was used to establish an objective decision-making model for the assessment of both the quantitative and qualitative characteristics of the key indices. To support the developed model, an expert survey was performed to assess the applicability of each GT from a practical perspective, which was verified with a case study using two additional GTs. The proposed model is expected to support practitioners in the application of suitable GTs to road projects and reduce carbon emissions, resulting in better decision making during road construction projects.

  12. 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.

  13. Study of Collaborative Management for Transportation Construction Project Based on BIM Technology

    Science.gov (United States)

    Jianhua, Liu; Genchuan, Luo; Daiquan, Liu; Wenlei, Li; Bowen, Feng

    2018-03-01

    Abstract. Building Information Modeling(BIM) is a building modeling technology based on the relevant information data of the construction project. It is an advanced technology and management concept, which is widely used in the whole life cycle process of planning, design, construction and operation. Based on BIM technology, transportation construction project collaborative management can have better communication through authenticity simulation and architectural visualization and can obtain the basic and real-time information such as project schedule, engineering quality, cost and environmental impact etc. The main services of highway construction management are integrated on the unified BIM platform for collaborative management to realize information intercommunication and exchange, to change the isolated situation of information in the past, and improve the level of information management. The final BIM model is integrated not only for the information management of project and the integration of preliminary documents and design drawings, but also for the automatic generation of completion data and final accounts, which covers the whole life cycle of traffic construction projects and lays a good foundation for smart highway construction.

  14. CORR Guidelines. Preparing and Conducting Review Missions of Construction Project Readiness for Nuclear Power Plants

    International Nuclear Information System (INIS)

    2013-01-01

    The construction readiness review (CORR) mission for nuclear power plant projects has been established with the aim of conducting peer reviews of construction projects related to nuclear power plants. Such a mission provides a detailed assessment of readiness for construction, construction progress, readiness for turnover, as well as recommendations for improvement. Organizations in Member States, such as nuclear utilities, owners, regulators and technical support organizations, can benefit from such reviews. A team of international experts with complementing specialities will conduct the CORR mission. The review is based on appropriate IAEA publications, such as IAEA Safety Standards Series Guides and IAEA Nuclear Energy Series publications, as well as on internationally recognized project and construction management guides. Mission findings are summarized in a mission report, which includes a list of recommendations, suggestions and identified good practices. The review is not intended to be a regulatory inspection or an audit against international codes and standards. Rather, it is a peer review aimed at improving implementation processes and procedures through an exchange of technical experiences and practices at the working level. The mission is applicable at any stage of a nuclear power plant construction project, although two specific phases are targeted: (1) start of construction mission (Phase 1 mission) and (2) an in-progress mission (Phase 2 mission). Missions are initiated when official requests are submitted by Member States through the appropriate IAEA channels

  15. Construction quality assurance program plan for the WIPP project, Carlsbad, NM

    International Nuclear Information System (INIS)

    1987-05-01

    The purpose of this plan is to describe the Quality Assurance (QA) Program to be established and implemented by the US Department of Energy (DOE) Waste Isolation Pilot Plant (WIPP) Project Office (WPO) and by the Major Project Participants: the Architect-Engineer (Bechtel), the Construction Manager (US Army Corps of Engineers), the Scientific Advisor (Sandia National Laboratory), and the Management and Operating Contractor (Westinghouse Electric Corporation). This plan addresses the construction, including site evaluation, design, and turnover phases of WIPP. Other work in progress during the same period is controlled by DOE documents applicable to that work effort. The prime responsibility for ensuring the quality of construction rests with the DOE WIPP Project Office and is implemented through the combined efforts of the Construction Manager, the Construction Contractors, the Management and Operating Contractor, and the Architect-Engineer. Inspection and burden of proof of acceptability rests with the Construction Contractor as defined by the technical provisions of the contract and as otherwise specified by the DOE WIPP Project Office on an individual work-package basis. To the maximum extent possible, acceptance of work will be based upon first-hand witnessing by the Construction Manager and other representatives of the DOE organization

  16. A Proactive Approach for Change Management and Control on Construction Projects

    OpenAIRE

    CHEN, CHAO

    2015-01-01

    Changes on construction projects present tough and controversial issues. Change is one of the primary reasons for schedule delay and cost overrun, which create negative impact on project performance and profitability. The liability of change and its consequences are major sources of disagreements between project participants, which often lead to disputes or claims.To answer the challenge of change, both industry and academia have developed change management techniques. Many studies have touch...

  17. Construction projects using alternative materials: a framework to assess their sustainability.

    OpenAIRE

    Fevre-Gautier , Anne-Lise; Beylot , Antoine; Vaxelaire , Stéphane; Michel , Pascale; Brullot , Sabrina; Lannou , Grégory; Stoos , Marion

    2012-01-01

    The increasing use of alternative materials and local solutions for construction projects raises questions about success conditions and criteria for the economic feasibility and global sustainability of such projects. Among others, how can design conditions - especially regarding the decision process - determine their success? We will present the results of a two-years project conducted from February 2010 to March 2012 in collaboration with ADEME (French agency of environment and energy contr...

  18. 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...

  19. Comparing Performance of Government and Private Clients in Construction Projects: Contractors’ Perspective

    OpenAIRE

    Jati Utomo Dwi Hatmoko; Riqi Radian Khasania

    2016-01-01

    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 respo...

  20. 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.

  1. 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.

  2. The quality control for biological-shield heavy concrete construction of nuclear power project

    International Nuclear Information System (INIS)

    Sun Hongjun; Ma Xinchao

    2012-01-01

    The paper introduces the function and characteristics of biological protective heavy-concrete, and its main application scope and role in Fangjiashan nuclear power project. From the aspects of raw material selection, mixing ratio test, heavy concrete production, the paper discusses the main control points of heavy concrete construction process, points out the basic characteristics of heavy concrete construction, and put forward measures to prevent density non-uniformity during heavy concrete construction and to control slump during transportation. Results prove that reasonable construction process control can assure the engineering quality. (authors)

  3. Construction strategies and lifetime uncertainties for nuclear projects: A real option analysis

    Energy Technology Data Exchange (ETDEWEB)

    Jain, Shashi, E-mail: s.jain@cwi.nl [TU Delft, Delft Institute of Applied Mathematics, Delft (Netherlands); Nuclear Research Group, Petten (Netherlands); Roelofs, Ferry, E-mail: roelofs@nrg.eu [Nuclear Research Group, Petten (Netherlands); Oosterlee, Cornelis W., E-mail: c.w.oosterlee@cwi.nl [CWI – Centrum Wiskunde and Informatica, Amsterdam (Netherlands); TU Delft, Delft Institute of Applied Mathematics, Delft (Netherlands)

    2013-12-15

    Highlights: • Real options can be used to value flexibility of modular reactors. • Value of NPPs increases with implementation of long term cost reductions. • Levels of uncertainties affect the choice between projects. -- Abstract: Small and medium sized reactors, SMRs (according to IAEA, ‘small’ are reactors with power less than 300 MWe, and ‘medium’ with power less than 700 MWe) are considered as an attractive option for investment in nuclear power plants. SMRs may benefit from flexibility of investment, reduced upfront expenditure, and easy integration with small sized grids. Large reactors on the other hand have been an attractive option due to economy of scale. In this paper we focus on the advantages of flexibility due to modular construction of SMRs. Using real option analysis (ROA) we help a utility determine the value of sequential modular SMRs. Numerical results under different considerations, like possibility of rare events, learning, uncertain lifetimes are reported for a single large unit and modular SMRs.

  4. Construction strategies and lifetime uncertainties for nuclear projects: A real option analysis

    International Nuclear Information System (INIS)

    Jain, Shashi; Roelofs, Ferry; Oosterlee, Cornelis W.

    2013-01-01

    Highlights: • Real options can be used to value flexibility of modular reactors. • Value of NPPs increases with implementation of long term cost reductions. • Levels of uncertainties affect the choice between projects. -- Abstract: Small and medium sized reactors, SMRs (according to IAEA, ‘small’ are reactors with power less than 300 MWe, and ‘medium’ with power less than 700 MWe) are considered as an attractive option for investment in nuclear power plants. SMRs may benefit from flexibility of investment, reduced upfront expenditure, and easy integration with small sized grids. Large reactors on the other hand have been an attractive option due to economy of scale. In this paper we focus on the advantages of flexibility due to modular construction of SMRs. Using real option analysis (ROA) we help a utility determine the value of sequential modular SMRs. Numerical results under different considerations, like possibility of rare events, learning, uncertain lifetimes are reported for a single large unit and modular SMRs

  5. 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.

  6. 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

  7. Effective Risk Management in Innovative Projects: A Case Study of the Construction of Energy-efficient, Sustainable Building of the Laboratory of Intelligent Building in Cracow

    Science.gov (United States)

    Krechowicz, Maria

    2017-10-01

    Many construction projects fail to meet deadlines or they exceed the assumed budget. This scenario is particularly common in the case of innovative projects, in which too late identification of a high risk of delays and exceeding the assumed costs makes a potentially profitable project untenable. A high risk level, far exceeding the level of risk in standard non-innovative projects, is a characteristic feature of the realization phase of innovative projects. This is associated not only with greater complexity of the design and construction phases, but also with the problems with application of new technologies and prototype solutions, lack of qualified personnel with suitable expertise in specialized areas, and with the ability to properly identify the gaps between available and required knowledge and skills. This paper discusses the process of effective risk management in innovative projects on the example of the realization phase of an innovative, energy-efficient and sustainable building of the Laboratory of Intelligent Building in Cracow - DLJM Lab, from the point of view of DORBUD S.A., its general contractor. In this paper, a new approach to risk management process for innovative construction projects is proposed. Risk management process was divided into five stages: gathering information, identification of the important unwanted events, first risk assessment, development and choice of risk reaction strategies, assessment of the residual risk after introducing risk reactions. 18 unwanted events in an innovative construction project were identified. The first risk assessment was carried out using two-parametric risk matrix, in which the probability of unwanted event occurrence and its consequences were analysed. Three levels of risks were defined: tolerable, controlled and uncontrolled. Risk reactions to each defined unwanted event were developed. The following risk reaction types were considered: risk retention, risk reduction, risk transfer and risk

  8. Student use of a Learning Management System for group projects: A case study investigating interaction, collaboration, and knowledge construction

    Science.gov (United States)

    Lonn, Steven D.

    Web-based Learning Management Systems (LMS) allow instructors and students to share instructional materials, make class announcements, submit and return course assignments, and communicate with each other online. Previous LMS-related research has focused on how these systems deliver and manage instructional content with little concern for how students' constructivist learning can be encouraged and facilitated. This study investigated how students use LMS to interact, collaborate, and construct knowledge within the context of a group project but without mediation by the instructor. The setting for this case study was students' use in one upper-level biology course of the local LMS within the context of a course-related group project, a mock National Institutes of Health grant proposal. Twenty-one groups (82 students) voluntarily elected to use the LMS, representing two-thirds of all students in the course. Students' peer-to-peer messages within the LMS, event logs, online surveys, focus group interviews, and instructor interviews were used in order to answer the study's overarching research question. The results indicate that students successfully used the LMS to interact and, to a significant extent, collaborate, but there was very little evidence of knowledge construction using the LMS technology. It is possible that the ease and availability of face-to-face meetings as well as problems and limitations with the technology were factors that influenced whether students' online basic interaction could be further distinguished as collaboration or knowledge construction. Despite these limitations, students found several tools and functions of the LMS useful for their online peer interaction and completion of their course project. Additionally, LMS designers and implementers are urged to consider previous literature on computer-supported collaborative learning environments in order to better facilitate independent group projects within these systems. Further research is

  9. Research on Risk Manage of Power Construction Project Based on Bayesian Network

    Science.gov (United States)

    Jia, Zhengyuan; Fan, Zhou; Li, Yong

    With China's changing economic structure and increasingly fierce competition in the market, the uncertainty and risk factors in the projects of electric power construction are increasingly complex, the projects will face huge risks or even fail if we don't consider or ignore these risk factors. Therefore, risk management in the projects of electric power construction plays an important role. The paper emphatically elaborated the influence of cost risk in electric power projects through study overall risk management and the behavior of individual in risk management, and introduced the Bayesian network to the project risk management. The paper obtained the order of key factors according to both scene analysis and causal analysis for effective risk management.

  10. 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.

  11. A team leadership approach to managing the transition from construction to operations for an environmental project

    International Nuclear Information System (INIS)

    Kelly, J.W.

    1994-06-01

    This presentation describes a team approach, at the totalproject level that focused team members with common objectives, for the transition to start-up and operation of the project. The Integrated Management Team (IMT) approach has been successful for this US Department of Energy (DOE) environmental restoration project at the Hanford Site in Richland, Washington. The $53.8-million project will collect, treat, and dispose of low-level mixed waste water discharges from the Hanford Site. Construction is scheduled for completion in September 1994 and facility start-up in June 1995. The project challenge is for leadership that is committed to the transition from construction to operation of the environmental restoration project

  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 quantitative analysis study on the implementation of partnering in the design and build construction project

    Science.gov (United States)

    Halil, F. M.; Nasir, N. M.; Shukur, A. S.; Hashim, H.

    2018-02-01

    Design and Build construction project involved the biggest scale of the cost of investment as compared to the traditional approach. In Design and Build, the client hires a design professional that will design according to the client’s need and specification. This research aim is to explore the concept of partnering implementation practiced in the design and build procurement approach. Therefore, the selection of design professionals such as Contractors and consultants in the project is crucial to ensure the successful project completion on time, cost, and quality. The methodology adopted using quantitative approach. Administration of the questionnaire was distributed to the public client by using postal survey. Outcomes of the results, the public clients agreed that project management capabilities and commitment to budget as a crucial element of partnering from the design professional in design and build construction project.

  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...... 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...... 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’....

  15. 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.

  16. 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.

  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. The S-curve for forecasting waste generation in construction projects.

    Science.gov (United States)

    Lu, Weisheng; Peng, Yi; Chen, Xi; Skitmore, Martin; Zhang, Xiaoling

    2016-10-01

    Forecasting construction waste generation is the yardstick of any effort by policy-makers, researchers, practitioners and the like to manage construction and demolition (C&D) waste. This paper develops and tests an S-curve model to indicate accumulative waste generation as a project progresses. Using 37,148 disposal records generated from 138 building projects in Hong Kong in four consecutive years from January 2011 to June 2015, a wide range of potential S-curve models are examined, and as a result, the formula that best fits the historical data set is found. The S-curve model is then further linked to project characteristics using artificial neural networks (ANNs) so that it can be used to forecast waste generation in future construction projects. It was found that, among the S-curve models, cumulative logistic distribution is the best formula to fit the historical data. Meanwhile, contract sum, location, public-private nature, and duration can be used to forecast construction waste generation. The study provides contractors with not only an S-curve model to forecast overall waste generation before a project commences, but also with a detailed baseline to benchmark and manage waste during the course of construction. The major contribution of this paper is to the body of knowledge in the field of construction waste generation forecasting. By examining it with an S-curve model, the study elevates construction waste management to a level equivalent to project cost management where the model has already been readily accepted as a standard tool. Copyright © 2016 Elsevier Ltd. All rights reserved.

  19. A Decision Model Assessing the Owner and Contractor’s Conflict Behaviors in Construction Projects

    Directory of Open Access Journals (Sweden)

    Guangdong Wu

    2018-01-01

    Full Text Available Considering the effects of the contractor’s conflict behaviors on the project benefit, a decision model between the owner and contractor’s conflict behaviors in construction projects was constructed using the principal-agent theory and game theory. The model was analyzed under nonconflicting and conflicting conditions, and a numerical simulation and example analysis were proposed to verify the constructed model’s conclusion. The results showed that the effort levels of the owner and contractor not only relate to benefit-sharing coefficient and effort outcome coefficient but also depend on the contractor’s ability of converting the conflict into benefit and the loss caused by conflict behaviors. A higher ability of converting conflicts into benefits and lower levels of the loss caused by conflict behaviors for the contractor lead to lower levels of the net benefit of the owner, conversely higher levels of the net benefit of the contractor. Balancing the contractor’s ability of converting conflicts into benefits and the loss caused by conflict behaviors lead to a more reasonable risk allocation between the owner and contractor, improving the effort level and net benefit. To add value to the construction project, the owner should establish an impartial and reasonable benefit-sharing mechanism, optimize the owner and contractor’s resource arrangement, maximize the positive effect of conflict on project benefits, and avoid the negative effect of conflict. Few studies to date have investigated the effects of conflict behaviors on project benefits in terms of modeling and simulation in construction projects. As such, this study bridges this gap and contributes significant theoretical and practical insights about managing conflict behaviors in an interorganizational context, thus enhancing performance in construction projects.

  20. Case study: Proposed application of project management techniques for construction of nuclear power plant in Malaysia

    International Nuclear Information System (INIS)

    Syahirah Abdul Rahman; Phongsakorn Prak Tom; Wan Abd Hadi Wan Abu Bakar; Shaharum Ramli

    2010-01-01

    This study discusses the techniques of project management for the construction of nuclear power plants that can be used in Malaysia. Nuclear power reactors are expected to apply is the categories of Gen III + reactor where it is safer and more modern than the first generation of reactors built in the 1970s. The objective of this study is that the construction of this reactor to be completed by the stipulated time and not exceed the cost estimates. In addition, project management is also able to meet all the specifications and achieve the quality standard. In this study, the techniques used in project management to ensure the success of construction projects of nuclear power plants are a Gantt Chart, CPM/ PERT and Microsoft Project. From the study, found that these techniques can assist in facilitating the management of the project for the construction of nuclear power plants to ensure that the estimated time and cost can be managed more effectively as well as quality of care. (author)

  1. The influence of client brief and change order in construction project

    Science.gov (United States)

    Mahat, N. A. A.; Adnan, H.

    2018-02-01

    Construction briefing is a statement of needs about intentions and projects objectives. Briefing process is the preliminary stage in the design process and successful briefing can achieve project delivery right on target time, cost and quality of project confidently. Although there are many efforts to approach client’s requirement and needs for a project, it is still not collected adequately to make proper solutions in design. Thus, these may lead the client to include change orders during the construction phase. This paper is concerned toward the influence of client’s briefing of a construction project that impact on the change order on the construction works. The research objective is to identify the influence of client’s brief on change orders, therefore, the aims of the research is to reduce change orders in project delivery. This research adopted both qualitative and quantitative data collection methods which are content analysis and semi structure interview. The findings highlight factors contributing to change orders and the essential attributes of clients during the briefing stage that may help minimise them.

  2. A study of best management practices for enhancing productivity in building projects: construction methods perspectives

    Directory of Open Access Journals (Sweden)

    Argaw Tarekegn Gurmu

    2016-09-01

    Full Text Available This research investigates management practices that have the potential to enhance productivity in building projects by focusing on construction methods. In phase 1 of the study, face-to-face interviews with nineteen experts were conducted to identify the best management practices for construction methods. The qualitative data analysis reached saturation and resulted in a list of best practices for construction methods that are relevant to the local industry. The second phase used an industry-wide survey to prioritize the best practices. Accordingly, project start-up plan, traffic control plan, machinery positioning strategy, project completion plan, and dynamic site layout plan were shown to be the top five best practices for construction methods. The study also revealed that high levels of implementation of best practices are associated with low levels of project delays. The use of best practices also varied according to the project costs. There were no discernible differences between the top five best practices. The authors suggest that they should be implemented jointly to improve productivity in building projects. Contractors could use the logistic regression model developed, to predict the probability of exceeding a baseline productivity factor and, on that basis, implement corrective actions to achieve the desired level of productivity.

  3. 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.

  4. Projects of Iberdrola Engineering and Construction on the Flamanville 3 EPR

    International Nuclear Information System (INIS)

    Zornoza, J.; Dumas, H.; Sesma, J. L.; Cubian, B.; Diaz, J. I.

    2013-01-01

    Iberdrola Engineering and Construction is participating during the last 5 years in 5 projects on the Flamanville 3 EPR, both in the nuclear island and conventional island and the pump house. These projects represent a challenge from the technical point of view due to the high requirements applicable to the project because of the experience feedback of the operator EDF and of compliance with new regulations that have emerged since the completion of the last nuclear power station in France. This paper presents the description of these projects, as well as its current status. (Author)

  5. Phase I of the Kissimmee River restoration project, Florida, USA: impacts of construction on water quality.

    Science.gov (United States)

    Colangelo, David J; Jones, Bradley L

    2005-03-01

    Phase I of the Kissimmee River restoration project included backfilling of 12 km of canal and restoring flow through 24 km of continuous river channel. We quantified the effects of construction activities on four water quality parameters (turbidity, total phosphorus flow-weighted concentration, total phosphorus load and dissolved oxygen concentration). Data were collected at stations upstream and downstream of the construction and at four stations within the construction zone to determine if canal backfilling and construction of 2.4 km of new river channel would negatively impact local and downstream water quality. Turbidity levels at the downstream station were elevated for approximately 2 weeks during the one and a half year construction period, but never exceeded the Florida Department of Environmental Protection construction permit criteria. Turbidity levels at stations within the construction zone were high at certain times. Flow-weighted concentration of total phosphorus at the downstream station was slightly higher than the upstream station during construction, but low discharge limited downstream transport of phosphorus. Total phosphorus loads at the upstream and downstream stations were similar and loading to Lake Okeechobee was not significantly affected by construction. Mean water column dissolved oxygen concentrations at all sampling stations were similar during construction.

  6. A Novel Evaluation Method for Building Construction Project Based on Integrated Information Entropy with Reliability Theory

    Directory of Open Access Journals (Sweden)

    Xiao-ping Bai

    2013-01-01

    Full Text Available Selecting construction schemes of the building engineering project is a complex multiobjective optimization decision process, in which many indexes need to be selected to find the optimum scheme. Aiming at this problem, this paper selects cost, progress, quality, and safety as the four first-order evaluation indexes, uses the quantitative method for the cost index, uses integrated qualitative and quantitative methodologies for progress, quality, and safety indexes, and integrates engineering economics, reliability theories, and information entropy theory to present a new evaluation method for building construction project. Combined with a practical case, this paper also presents detailed computing processes and steps, including selecting all order indexes, establishing the index matrix, computing score values of all order indexes, computing the synthesis score, sorting all selected schemes, and making analysis and decision. Presented method can offer valuable references for risk computing of building construction projects.

  7. A novel evaluation method for building construction project based on integrated information entropy with reliability theory.

    Science.gov (United States)

    Bai, Xiao-ping; Zhang, Xi-wei

    2013-01-01

    Selecting construction schemes of the building engineering project is a complex multiobjective optimization decision process, in which many indexes need to be selected to find the optimum scheme. Aiming at this problem, this paper selects cost, progress, quality, and safety as the four first-order evaluation indexes, uses the quantitative method for the cost index, uses integrated qualitative and quantitative methodologies for progress, quality, and safety indexes, and integrates engineering economics, reliability theories, and information entropy theory to present a new evaluation method for building construction project. Combined with a practical case, this paper also presents detailed computing processes and steps, including selecting all order indexes, establishing the index matrix, computing score values of all order indexes, computing the synthesis score, sorting all selected schemes, and making analysis and decision. Presented method can offer valuable references for risk computing of building construction projects.

  8. Cost estimation using ministerial regulation of public work no. 11/2013 in construction projects

    Science.gov (United States)

    Arumsari, Putri; Juliastuti; Khalifah Al'farisi, Muhammad

    2017-12-01

    One of the first tasks in starting a construction project is to estimate the total cost of building a project. In Indonesia there are several standards that are used to calculate the cost estimation of a project. One of the standards used in based on the Ministerial Regulation of Public Work No. 11/2013. However in a construction project, contractor often has their own cost estimation based on their own calculation. This research aimed to compare the construction project total cost using calculation based on the Ministerial Regulation of Public Work No. 11/2013 against the contractor’s calculation. Two projects were used as case study to compare the results. The projects were a 4 storey building located in Pantai Indah Kapuk area (West Jakarta) and a warehouse located in Sentul (West Java) which was built by 2 different contractors. The cost estimation from both contractors’ calculation were compared to the one based on the Ministerial Regulation of Public Work No. 11/2013. It is found that there were differences between the two calculation around 1.80 % - 3.03% in total cost, in which the cost estimation based on Ministerial Regulation was higher than the contractors’ calculations.

  9. 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.

  10. The research of electrical tracing system construction management and related questions of BOP project

    International Nuclear Information System (INIS)

    Wang Lining; Li Jingmin; Ma Ding; Tu Haitao

    2015-01-01

    Based on Hongyanhe nuclear power plant in Liaoning province, the paper studies the anti-freeze and heat tracing work of BOP project. It compares several different heat tracing solutions in terms of technicality and applicability, and gave the most suitable scheme by using electrical tracing. It also presents the construction details of the electrical tracing system, analyzes the key points of the construction management from quantity, safety and schedule aspects, and gave the improvement suggestions. (authors)

  11. Analisis Kecelakaan Kerja Pada Proyek Bangunan Gedung (Analysis of Work Accident on Building Construction Projects)

    OpenAIRE

    Ferdiansyah, Deni; Winarno, Setya; M, Faisol A

    2009-01-01

    Work accidents and fatalities often happen in construction industry, thus a study on this matter to promote safety management needs a thorough analysis of their elements. The purpose of this paper is to identify various types of accidents, cost of accident and insurance premium, and also the correlation between the types of accidents and their costs. The data was collected from thirty construction projects around Daerah Istimewa Yogyakarta province and surrounding areas. These data included t...

  12. A model of how features of construction projects influence accident occurrence

    OpenAIRE

    Manu, P.

    2017-01-01

    This book chapter in "Valuing People in Construction" (edited by Emuze, F. and Smallwood, J.) presents a study which sought empirical verification of a model of how construction project features (CPFs) influence accident occurrence. A qualitative strategy, in particular phenomenology, involving a range of in-depth interviews with practitioners was used and the findings were subsequently validated using a credibility check involving a survey. Altogether, the findings of the interviews and cred...

  13. Burrowing Owl and Other Migratory Bird Mitigation for a Runway Construction Project at Edwards AFB

    OpenAIRE

    Hoehn, Amber L.; Hagan, Mark; Bratton, Mark

    2009-01-01

    Edwards Air Force Base (AFB) scheduled the construction of a runway in the spring of 2007. The runway would be in an area that contained migratory birds and their habitat. The construction project would be near Edwards AFB main runway and had the potential not only to impact species protected under the Migratory Bird Treaty Act (MBTA), including the burrowing owl (Athene cunicularia), but also to increase bird and wildlife–aircraft strike hazards in the active flightline areas. To discourage ...

  14. Modelling of risk events with uncertain likelihoods and impacts in large infrastructure projects

    DEFF Research Database (Denmark)

    Schjær-Jacobsen, Hans

    2010-01-01

    to prevent future budget overruns. One of the central ideas is to introduce improved risk management processes and the present paper addresses this particular issue. A relevant cost function in terms of unit prices and quantities is developed and an event impact matrix with uncertain impacts from independent......This paper presents contributions to the mathematical core of risk and uncertainty management in compliance with the principles of New Budgeting laid out in 2008 by the Danish Ministry of Transport to be used in large infrastructure projects. Basically, the new principles are proposed in order...... uncertain risk events is used to calculate the total uncertain risk budget. Cost impacts from the individual risk events on the individual project activities are kept precisely track of in order to comply with the requirements of New Budgeting. Additionally, uncertain likelihoods for the occurrence of risk...

  15. 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.

  16. 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.

  17. Model and Algorithm for Substantiating Solutions for Organization of High-Rise Construction Project

    Directory of Open Access Journals (Sweden)

    Anisimov Vladimir

    2018-01-01

    Full Text Available In the paper the models and the algorithm for the optimal plan formation for the organization of the material and logistical processes of the high-rise construction project and their financial support are developed. The model is based on the representation of the optimization procedure in the form of a non-linear problem of discrete programming, which consists in minimizing the execution time of a set of interrelated works by a limited number of partially interchangeable performers while limiting the total cost of performing the work. The proposed model and algorithm are the basis for creating specific organization management methodologies for the high-rise construction project.

  18. Model and Algorithm for Substantiating Solutions for Organization of High-Rise Construction Project

    Science.gov (United States)

    Anisimov, Vladimir; Anisimov, Evgeniy; Chernysh, Anatoliy

    2018-03-01

    In the paper the models and the algorithm for the optimal plan formation for the organization of the material and logistical processes of the high-rise construction project and their financial support are developed. The model is based on the representation of the optimization procedure in the form of a non-linear problem of discrete programming, which consists in minimizing the execution time of a set of interrelated works by a limited number of partially interchangeable performers while limiting the total cost of performing the work. The proposed model and algorithm are the basis for creating specific organization management methodologies for the high-rise construction project.

  19. 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.

  20. 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.

  1. Valuation of Construction Projects Based on of Quantity Scale by using Expert System

    Directory of Open Access Journals (Sweden)

    Entisar Kadhim Rasheed

    2016-02-01

    Full Text Available The subject of an valuation of quality of construction projects is one of the topics which it becomes necessary of the absence of the quantity standards in measuring the control works and the quality valuation standards in constructional projects. In the time being it depends on the experience of the workers which leads to an apparent differences in the valuation. The idea of this research came to put the standards to evaluate the quality of the projects in a special system depending on quantity scale nor quality specifying in order to prepare an expert system “ Crystal “ to apply this special system to able the engineers to valuate the quality of their projects easily and in more accurate ways.

  2. Conformity Assessment as a Tool for Organizational Learning in Large Engineering and Construction Projects

    Directory of Open Access Journals (Sweden)

    Luciano Assalim

    2013-05-01

    Full Text Available For the successful realization of large engineering and construction projects (LECPs, a systemic organizational learning framework for institutional cooperation is critical. Due to the long project life-cycle of LECPs, this is particularly important for this kind of project. The objective of this paper is to analyze to what extent the conformity assessment of LECPs, carried out under Engineering, Procurement and Construction management (EPCm services, can be used as a tool for organizational learning and cooperation between typical stakeholders (project owners, engineering contractors, EPC contractors; subcontractors and certification bodies. The research, from which this paper emanates, was based on a case study concerning LECPs in an oil and gas company in Brazil. Based on its results, we suggest that the proposed organizational learning framework, supported by the conformity assessment rationale, constitutes an important management tool that can be disseminated in other organizational contexts where conformity assessments of LECPs take place.

  3. ELIMINATION OF THE DISADVANTAGES OF SCHEDULING-NETWORK PLANNING BY APPLYING THE MATRIX OF KEY PROJECT EVENTS

    OpenAIRE

    Morozenko Andrey Aleksandrovich; Krasovskiy Dmitriy Viktorovich

    2017-01-01

    The article discusses the current disadvantages of the scheduling-network planning in the management of the terms of investment-construction project. Problems associated with the construction of the schedule and the definitions of the duration of the construction project are being studied. The problems of project management for the management apparatus are shown, which consists in the absence of mechanisms for prompt response to deviations in the parameters of the scheduling-network diagram. ...

  4. Accident Investigation on a Large Construction Project: An Ethnographic Case Study

    OpenAIRE

    Oswald, David; Smith, Simon; Sherratt, Fred

    2015-01-01

    Unsafe acts are believed to account for approximately 80 to 90 percent of accidents. This paper will investigate this issue through exploring the reasoning behind the unsafe acts that resulted in a minor accident on a large construction project (+$1B) in the UK. The study described here, part of a wider PhD project, was undertaken using an ethnographic approach. Participant observation enabled the researcher to be involved in the whole accident investigation process including witness statemen...

  5. 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.

  6. 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.

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

    OpenAIRE

    Tiong Kung Leong; Norhayati Zakuan; Muhamad Zameri Mat Saman; Mohd. Shoki Md. Ariff; Choy Soon Tan

    2014-01-01

    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 sat...

  8. Construction of spaces of kinematic quantum states for field theories via projective techniques

    International Nuclear Information System (INIS)

    Okołów, Andrzej

    2013-01-01

    We present a method of constructing a space of quantum states for a field theory: given phase space of a theory, we define a family of physical systems each possessing a finite number of degrees of freedom, next we define a space of quantum states for each finite system, finally using projective techniques we organize all these spaces into a space of quantum states which corresponds to the original phase space. This construction is kinematic in this sense that it bases merely on the structure of the phase space of a theory and does not take into account possible constraints on the space. The construction is a generalization of a construction by Kijowski—the latter one is limited to theories of linear phase spaces, while the former one is free of this limitation. The method presented in this paper enables to construct a space of quantum states for the teleparallel equivalent of general relativity. (paper)

  9. 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.

  10. 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.

  11. A successful waste stream analysis on a large construction project in a radiologically controlled area

    International Nuclear Information System (INIS)

    Kennicott, M.; Richardson, D.; Starke, T.P.

    1997-01-01

    The Los Alamos National Laboratory (the Laboratory) Chemistry and Metallurgy Research (CMR) Facility, constructed in 1952, is currently under going a major, multi-year demolition and construction project. Many of the operations required under this project (i.e., design, demolition, decontamination, construction, and waste management) mimic the processes required of a large scale decontamination and decommissioning (D and D) job and are identical to the requirements of any of several upgrades projects anticipated for the laboratory and other Department of Energy (DOE) sites. For these reasons the CMR upgrades Project is seen as an ideal model facility--to test the application and measure the success of waste minimization techniques which could be implemented for any similar projects. The purpose of this paper will be to discuss the successful completion of a waste stream analysis. The analyses performed was to measure the potential impact of waste generation, in terms of volume and costs, for a reconfiguration option being considered to change the approach and execution of the original project

  12. 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.

  13. Extensive Analysis of Worldwide Events Related to The Construction and Commissioning of Nuclear Power Plants: Lessons Learned and Recommendations

    International Nuclear Information System (INIS)

    Noel, M.; Zerger, B.; Vuorio, U.; )

    2011-01-01

    Lessons learnt from past experience are extensively used to improve the safety of nuclear power plants (NPPs) worldwide. Although the process of analyzing operational experience is now widespread and well developed, the need for establishment of a similar process for construction experience was highlighted by several countries embarking on construction of new NPPs and in some international forums including the Working Group on the Regulation of New Reactors (WGRNR) of the OECD-NEA. In 2008, EU Member State Safety Authorities participating to the EU Clearinghouse on Operational Experience Feedback decided to launch a topical study on events related to pre-operational stages of NPPs. The aim of this topical study is to reduce the recurrence of events related to the construction, the initial component manufacturing and the commissioning of NPPs, by identifying the main recurring and safety significant issues. For this study, 1090 IRS event reports, 857 US Licensee Event Reports (LERs) and approximately 100 WGRNR reports have been preselected based on key word searches and screened. The screening period starts from the beginning of the databases operation (in the 1980's as far as IRS and LER database are concerned) and ends in November 2009. After this initial screening, a total of 582 reports have been found applicable (247 IRS reports, 309 LERs and 26 WGRNR reports). Events considered for this study were those which have been initiated before the start of commercial operation, and detected before or even long after commercial operation. The events have been classified into 3 main categories (construction, manufacturing and commissioning), and into further sub-categories (building structures, metallic liners, electrical components, anchors, I and C, penetrations and building seals, emergency diesel generators, pipes, valves, welds, pumps, etc.) in order to facilitate the detailed analysis with the final objective to formulate both equipment specific

  14. 41 CFR 102-74.135 - Who selects construction and alteration projects that are to be performed?

    Science.gov (United States)

    2010-07-01

    ... and alteration projects that are to be performed? 102-74.135 Section 102-74.135 Public Contracts and... construction and alteration projects that are to be performed? The Administrator of General Services selects construction and alteration projects to be performed. ...

  15. Active Construction of Profession-Related Events: The Priming Effect among Pre-service Teachers with Different Professional Identity.

    Science.gov (United States)

    Wang, Xin-Qiang; Zhu, Jun-Cheng; Liu, Lu; Chen, Xiang-Yu; Huo, Jun-Yu

    2018-01-01

    Pre-service teachers with different professional identity may actively construct different subjective profession-related events based on the same objective profession-related events. To explore the priming effect among pre-service teachers with different professional identity, this study examined the effect of positive, negative, or neutral priming sentences in an individualized narration of profession-related events through a priming paradigm. Forty-two female volunteers were asked to complete positive, negative, and neutral priming sentences describing profession-related events. The results showed that, relative to those with weak professional identity, participants with strong professional identity generated a higher number of positive items when primed with different stimuli and displayed greater positive priming bias for positive and neutral stimuli. In addition, relative to those with strong professional identity, participants with weak professional identity generated a higher number of neutral and negative items when primed with positive and negative stimuli, respectively, and displayed greater negative priming bias toward negative stimuli. These results indicate that pre-service teachers with strong professional identity were likely to have established positive self-schemas involving profession-related events, which facilitated active, positive construction of such events.

  16. Active Construction of Profession-Related Events: The Priming Effect among Pre-service Teachers with Different Professional Identity

    Directory of Open Access Journals (Sweden)

    Xin-qiang Wang

    2018-02-01

    Full Text Available Pre-service teachers with different professional identity may actively construct different subjective profession-related events based on the same objective profession-related events. To explore the priming effect among pre-service teachers with different professional identity, this study examined the effect of positive, negative, or neutral priming sentences in an individualized narration of profession-related events through a priming paradigm. Forty-two female volunteers were asked to complete positive, negative, and neutral priming sentences describing profession-related events. The results showed that, relative to those with weak professional identity, participants with strong professional identity generated a higher number of positive items when primed with different stimuli and displayed greater positive priming bias for positive and neutral stimuli. In addition, relative to those with strong professional identity, participants with weak professional identity generated a higher number of neutral and negative items when primed with positive and negative stimuli, respectively, and displayed greater negative priming bias toward negative stimuli. These results indicate that pre-service teachers with strong professional identity were likely to have established positive self-schemas involving profession-related events, which facilitated active, positive construction of such events.

  17. Prioritization of proposed waste management construction projects for the Waste Management program within the Department of Energy

    International Nuclear Information System (INIS)

    Johnson, J.V.

    1995-01-01

    A prioritization process is used to evaluate and rank proposed construction projects within the Department of Energy's Waste Management program. The process is used to determine which projects should proceed with conceptual design activities. The proposed construction projects are evaluated against a set of criteria which reflect Waste Management priorities. A management review team ranks and scores the projects thereby generating a prioritized list of projects. Despite decreasing budgets and changing political climates, the process has been a successful decision-aiding tool for selecting construction projects to carry out the Waste Management mission within the Department of Energy

  18. 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.

  19. 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.

  20. 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

  1. Defense Infrastructure: Actions Needed to Enhance Oversight of Construction Projects Supporting Military Contingency Operations

    Science.gov (United States)

    2016-09-01

    supporting documentation for reviews that the U.S. Forces-Afghanistan conducted beginning in November 2011 of planned or ongoing contingency ...12 Contingency basing includes the planning , designing, constructing, operating, managing, and transitioning or closing of a non-enduring location...2016). Background Definition of “ Contingency Construction” Project Page 7 GAO-16-406 Defense Infrastructure statutory authority

  2. 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

  3. Ross In Situ Uranium Recovery Project NESHAP Subpart W Construction Approval

    Science.gov (United States)

    On May 5, 2015, EPA issued a Construction Approval under the National Emission Standards for Hazardous Air Pollutants (NESHAPs) at 40 CFR Part 61, subpart W, to Strata Energy, Inc., for their Ross In Situ Recovery (ISR) Uranium Project in Crook County, WY.

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

    International Nuclear Information System (INIS)

    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)

  5. Some principles of automated control systems construction with project organizational structure

    OpenAIRE

    Kovalenko, Ihor I.; Puhachenko, Kateryna S.

    2013-01-01

    The main principles of automated control systems construction with project organizational structures have been considered and the process flow sheet  for organizational systems control has been proposed. The architectural elements of the organizational system have been introduced and described. The instrumental tools of the graphodynamic systems theory have been used for the simulation modeling of hierarchical structures.

  6. 25 CFR 1000.246 - Must an AFA that contains a construction project or activity incorporate provisions of Federal...

    Science.gov (United States)

    2010-04-01

    ... as possible in the construction process. If Tribal construction standards are consistent with or... 25 Indians 2 2010-04-01 2010-04-01 false Must an AFA that contains a construction project or activity incorporate provisions of Federal construction standards? 1000.246 Section 1000.246 Indians OFFICE...

  7. 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.

  8. Convolutional neural networks applied to neutrino events in a liquid argon time projection chamber

    International Nuclear Information System (INIS)

    Acciarri, R.; Adams, C.; An, R.; Asaadi, J.; Auger, M.

    2017-01-01

    Here, we present several studies of convolutional neural networks applied to data coming from the MicroBooNE detector, a liquid argon time projection chamber (LArTPC). The algorithms studied include the classification of single particle images, the localization of single particle and neutrino interactions in an image, and the detection of a simulated neutrino event overlaid with cosmic ray backgrounds taken from real detector data. These studies demonstrate the potential of convolutional neural networks for particle identification or event detection on simulated neutrino interactions. Lastly, we also address technical issues that arise when applying this technique to data from a large LArTPC at or near ground level.

  9. Convolutional neural networks applied to neutrino events in a liquid argon time projection chamber

    Energy Technology Data Exchange (ETDEWEB)

    Acciarri, R.; Adams, C.; An, R.; Asaadi, J.; Auger, M.; Bagby, L.; Baller, B.; Barr, G.; Bass, M.; Bay, F.; Bishai, M.; Blake, A.; Bolton, T.; Bugel, L.; Camilleri, L.; Caratelli, D.; Carls, B.; Fernandez, R. Castillo; Cavanna, F.; Chen, H.; Church, E.; Cianci, D.; Collin, G. H.; Conrad, J. M.; Convery, M.; Crespo-Anad?n, J. I.; Del Tutto, M.; Devitt, D.; Dytman, S.; Eberly, B.; Ereditato, A.; Sanchez, L. Escudero; Esquivel, J.; Fleming, B. T.; Foreman, W.; Furmanski, A. P.; Garvey, G. T.; Genty, V.; Goeldi, D.; Gollapinni, S.; Graf, N.; Gramellini, E.; Greenlee, H.; Grosso, R.; Guenette, R.; Hackenburg, A.; Hamilton, P.; Hen, O.; Hewes, J.; Hill, C.; Ho, J.; Horton-Smith, G.; James, C.; de Vries, J. Jan; Jen, C. -M.; Jiang, L.; Johnson, R. A.; Jones, B. J. P.; Joshi, J.; Jostlein, H.; Kaleko, D.; Karagiorgi, G.; Ketchum, W.; Kirby, B.; Kirby, M.; Kobilarcik, T.; Kreslo, I.; Laube, A.; Li, Y.; Lister, A.; Littlejohn, B. R.; Lockwitz, S.; Lorca, D.; Louis, W. C.; Luethi, M.; Lundberg, B.; Luo, X.; Marchionni, A.; Mariani, C.; Marshall, J.; Caicedo, D. A. Martinez; Meddage, V.; Miceli, T.; Mills, G. B.; Moon, J.; Mooney, M.; Moore, C. D.; Mousseau, J.; Murrells, R.; Naples, D.; Nienaber, P.; Nowak, J.; Palamara, O.; Paolone, V.; Papavassiliou, V.; Pate, S. F.; Pavlovic, Z.; Porzio, D.; Pulliam, G.; Qian, X.; Raaf, J. L.; Rafique, A.; Rochester, L.; von Rohr, C. Rudolf; Russell, B.; Schmitz, D. W.; Schukraft, A.; Seligman, W.; Shaevitz, M. H.; Sinclair, J.; Snider, E. L.; Soderberg, M.; S?ldner-Rembold, S.; Soleti, S. R.; Spentzouris, P.; Spitz, J.; St. John, J.; Strauss, T.; Szelc, A. M.; Tagg, N.; Terao, K.; Thomson, M.; Toups, M.; Tsai, Y. -T.; Tufanli, S.; Usher, T.; Van de Water, R. G.; Viren, B.; Weber, M.; Weston, J.; Wickremasinghe, D. A.; Wolbers, S.; Wongjirad, T.; Woodruff, K.; Yang, T.; Zeller, G. P.; Zennamo, J.; Zhang, C.

    2017-03-01

    We present several studies of convolutional neural networks applied to data coming from the MicroBooNE detector, a liquid argon time projection chamber (LArTPC). The algorithms studied include the classification of single particle images, the localization of single particle and neutrino interactions in an image, and the detection of a simulated neutrino event overlaid with cosmic ray backgrounds taken from real detector data. These studies demonstrate the potential of convolutional neural networks for particle identification or event detection on simulated neutrino interactions. We also address technical issues that arise when applying this technique to data from a large LArTPC at or near ground level.

  10. 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.

  11. 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.

  12. Projects Delay Factors of Saudi Arabia Construction Industry Using PLS-SEM Path Modelling Approach

    Directory of Open Access Journals (Sweden)

    Abdul Rahman Ismail

    2016-01-01

    Full Text Available This paper presents the development of PLS-SEM Path Model of delay factors of Saudi Arabia construction industry focussing on Mecca City. The model was developed and assessed using SmartPLS v3.0 software and it consists of 37 factors/manifests in 7 groups/independent variables and one dependent variable which is delay of the construction projects. The model was rigorously assessed at measurement and structural components and the outcomes found that the model has achieved the required threshold values. At structural level of the model, among the seven groups, the client and consultant group has the highest impact on construction delay with path coefficient β-value of 0.452 and the project management and contract administration group is having the least impact to the construction delay with β-value of 0.016. The overall model has moderate explaining power ability with R2 value of 0.197 for Saudi Arabia construction industry representation. This model will able to assist practitioners in Mecca city to pay more attention in risk analysis for potential construction delay.

  13. [Principles and methodology for ecological rehabilitation and security pattern design in key project construction].

    Science.gov (United States)

    Chen, Li-Ding; Lu, Yi-He; Tian, Hui-Ying; Shi, Qian

    2007-03-01

    Global ecological security becomes increasingly important with the intensive human activities. The function of ecological security is influenced by human activities, and in return, the efficiency of human activities will also be affected by the patterns of regional ecological security. Since the 1990s, China has initiated the construction of key projects "Yangtze Three Gorges Dam", "Qinghai-Tibet Railway", "West-to-East Gas Pipeline", "West-to-East Electricity Transmission" and "South-to-North Water Transfer" , etc. The interaction between these projects and regional ecological security has particularly attracted the attention of Chinese government. It is not only important for the regional environmental protection, but also of significance for the smoothly implementation of various projects aimed to develop an ecological rehabilitation system and to design a regional ecological security pattern. This paper made a systematic analysis on the types and characteristics of key project construction and their effects on the environment, and on the basis of this, brought forward the basic principles and methodology for ecological rehabilitation and security pattern design in this construction. It was considered that the following issues should be addressed in the implementation of a key project: 1) analysis and evaluation of current regional ecological environment, 2) evaluation of anthropogenic disturbances and their ecological risk, 3) regional ecological rehabilitation and security pattern design, 4) scenario analysis of environmental benefits of regional ecological security pattern, 5) re-optimization of regional ecological system framework, and 6) establishment of regional ecosystem management plan.

  14. Project planning and management techniques of the fast-paced TMX-Upgrade construction

    International Nuclear Information System (INIS)

    Seberger, C.D.; Chargin, A.K.

    1981-01-01

    The Tandem Mirror Experiment-Upgrade (TMX-Upgrade) construction will be completed in 18 months at a total cost of $14.5 million. This paper describes the project planning and the management techniques used to complete the TMX-Upgrade within its allocated cost and schedule. In the planning stages of a project, before approval of the proposal, we define major project objectives, create a work breakdown structure (WBS), detail a technical description for each level of the WBS, and provide detailed bottoms-up cost estimates and summary schedules. In the operating phase, which continues throughout the project, we establish budget and schedule baselines. The reporting phase includes The Department of Energy (DOE) reviews of project status at monthly, quarterly, and semiannual intervals. These reports include cost, schedule, manpower, major procurement, and technical status information

  15. 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.

  16. Evaluating aggregate terrestrial impacts of road construction projects for advanced regional mitigation.

    Science.gov (United States)

    Thorne, James H; Girvetz, Evan H; McCoy, Michael C

    2009-05-01

    This study presents a GIS-based database framework used to assess aggregate terrestrial habitat impacts from multiple highway construction projects in California, USA. Transportation planners need such impact assessment tools to effectively address additive biological mitigation obligations. Such assessments can reduce costly delays due to protracted environmental review. This project incorporated the best available statewide natural resource data into early project planning and preliminary environmental assessments for single and multiple highway construction projects, and provides an assessment of the 10-year state-wide mitigation obligations for the California Department of Transportation. Incorporation of these assessments will facilitate early and more strategic identification of mitigation opportunities, for single-project and regional mitigation efforts. The data architecture format uses eight spatial scales: six nested watersheds, counties, and transportation planning districts, which were intersected. This resulted in 8058 map planning units statewide, which were used to summarize all subsequent analyses. Range maps and georeferenced locations of federally and state-listed plants and animals and a 55-class landcover map were spatially intersected with the planning units and the buffered spatial footprint of 967 funded projects. Projected impacts were summarized and output to the database. Queries written in the database can sum expected impacts and provide summaries by individual construction project, or by watershed, county, transportation district or highway. The data architecture allows easy incorporation of new information and results in a tool usable without GIS by a wide variety of agency biologists and planners. The data architecture format would be useful for other types of regional planning.

  17. Evaluating Aggregate Terrestrial Impacts of Road Construction Projects for Advanced Regional Mitigation

    Science.gov (United States)

    Thorne, James H.; Girvetz, Evan H.; McCoy, Michael C.

    2009-05-01

    This study presents a GIS-based database framework used to assess aggregate terrestrial habitat impacts from multiple highway construction projects in California, USA. Transportation planners need such impact assessment tools to effectively address additive biological mitigation obligations. Such assessments can reduce costly delays due to protracted environmental review. This project incorporated the best available statewide natural resource data into early project planning and preliminary environmental assessments for single and multiple highway construction projects, and provides an assessment of the 10-year state-wide mitigation obligations for the California Department of Transportation. Incorporation of these assessments will facilitate early and more strategic identification of mitigation opportunities, for single-project and regional mitigation efforts. The data architecture format uses eight spatial scales: six nested watersheds, counties, and transportation planning districts, which were intersected. This resulted in 8058 map planning units statewide, which were used to summarize all subsequent analyses. Range maps and georeferenced locations of federally and state-listed plants and animals and a 55-class landcover map were spatially intersected with the planning units and the buffered spatial footprint of 967 funded projects. Projected impacts were summarized and output to the database. Queries written in the database can sum expected impacts and provide summaries by individual construction project, or by watershed, county, transportation district or highway. The data architecture allows easy incorporation of new information and results in a tool usable without GIS by a wide variety of agency biologists and planners. The data architecture format would be useful for other types of regional planning.

  18. Effect of organizational structures and types of construction on perceptions of factors contributing to project failure in pakistan

    International Nuclear Information System (INIS)

    Gazder, U.; Khan, R.A.

    2018-01-01

    The construction industry is viewed as the regulator of national economy globally. Its importance in Pakistan has increased greatly because of the involvement of international funding agencies in infrastructure projects. The feasibility of such projects is largely dependent upon the satisfaction of multiple stakeholders. Hence, it is important to explore the factors considered by different construction organizations in evaluating the failure of their projects. This study focuses on providing a rating of factors affecting construction project failures in the construction industry of Karachi. In addition to that, difference in perception between professionals belonging to different construction projects and organizational structures has also been evaluated. The results of this study show that factors related to project planning and management are rated higher by professionals in general. Secondly, it was also observed that client satisfaction and its related factors were rated higher by organizations with project based management structures. (author)

  19. 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

  20. World Cup Cities Project: movement by the sport legacy of sporting mega events

    Directory of Open Access Journals (Sweden)

    Rodrigo Pojar Paiva

    2013-11-01

    Full Text Available The achievement of sporting mega events is configured as an exceptional opportunity for the promotion of sports in the host cities. For this positive legacy to happen it must be previously planned, executed and monitored. This study aimed to present the national structure of the World Cup Cities Project and analyse the results obtained in six host cities of the FIFA World Cup 2014. The results showed that the social and sports legacy was not planned by public managers and there are no systems of control and evaluation of sport in any of the host cities, until the realization of the project World Cup Cities.

  1. Cosmic rays Monte Carlo simulations for the Extreme Energy Events Project

    CERN Document Server

    Abbrescia, M; Aiola, S; Antolini, R; Avanzini, C; Baldini Ferroli, R; Bencivenni, G; Bossini, E; Bressan, E; Chiavassa, A; Cicalò, C; Cifarelli, L; Coccia, E; De Gruttola, D; De Pasquale, S; Di Giovanni, A; D'Incecco, M; Dreucci, M; Fabbri, F L; Frolov, V; Garbini, M; Gemme, G; Gnesi, I; Gustavino, C; Hatzifotiadou, D; La Rocca, P; Li, S; Librizzi, F; Maggiora, A; Massai, M; Miozzi, S; Panareo, M; Paoletti, R; Perasso, L; Pilo, F; Piragino, G; Regano, A; Riggi, F; Righini, G C; Sartorelli, G; Scapparone, E; Scribano, A; Selvi, M; Serci, S; Siddi, E; Spandre, G; Squarcia, S; Taiuti, M; Tosello, F; Votano, L; Williams, M C S; Yánez, G; Zichichi, A; Zuyeuski, R

    2014-01-01

    The Extreme Energy Events Project (EEE Project) is an innovative experiment to study very high energy cosmic rays by means of the detection of the associated air shower muon component. It consists of a network of tracking detectors installed inside Italian High Schools. Each tracking detector, called EEE telescope, is composed of three Multigap Resistive Plate Chambers (MRPCs). At present, 43 telescopes are installed and taking data, opening the way for the detection of far away coincidences over a total area of about 3 × 10 5 km 2 . In this paper we present the Monte Carlo simulations that have been performed to predict the expected coincidence rate between distant EEE telescopes.

  2. 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

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

    International Nuclear Information System (INIS)

    Hossen, Muhammed Mufazzal; Kang, Sunkoo; Kim, Jonghyun

    2014-01-01

    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

  4. Designing Alternative Transport Methods for the Distributed Data Collection of ATLAS EventIndex Project

    CERN Document Server

    Fernandez Casani, Alvaro; The ATLAS collaboration

    2016-01-01

    One of the key and challenging tasks of the ATLAS EventIndex project is to index and catalog all the produced events not only at CERN but also at hundreds of worldwide grid sites, and convey the data in real time to a central Hadoop instance at CERN. While this distributed data collection is currently operating correctly in production, there are some issues that might impose performance bottlenecks in the future, with an expected rise in the event production and reprocessing rates. In this work, we first describe the current approach based on a messaging system, which conveys the data from the sources to the central catalog, and we identify some weaknesses of this system. Then, we study a promising alternative transport method based on an object store, presenting a performance comparison with the current approach, and the architectural design changes needed to adapt the system to the next run of the ATLAS experiment at CERN.

  5. An informatics structure for the component event data bank of the ERDS feasibility project

    International Nuclear Information System (INIS)

    Capobianchi, S.; Borella, A.

    1980-01-01

    The development of the ERDS involves complex problems in organisation and data processing and it has therefore been decided to proceed by means of pilot experiments in order to test in practice the proposed solutions. The first experiment is concerned with the development of a computerised model for collecting, handling and retrieving raw data events through an experimental Component Event Data Bank (CEDB). With CEDB this refers to organised information related to events such as failures, repairs, maintenance actions etc., concerning major LWR components of which the technical specification, operational requirements and environmental conditions are specified in detail. This pilot experiment is indeed the most challenging in the framework of the ERDS feasibility project. It is foreseen that the raw data will be supplied by national European data banks using forms and codes proper to each of them. The conversion and standardisation of these data into homogeneous 'European' codes and classifications is for the most part automatically performed. (author)

  6. 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.

  7. Constructing the Web of Events from Raw Data in the Web of Things

    Directory of Open Access Journals (Sweden)

    Yunchuan Sun

    2014-01-01

    Full Text Available An exciting paradise of data is emerging into our daily life along with the development of the Web of Things. Nowadays, volumes of heterogeneous raw data are continuously generated and captured by trillions of smart devices like sensors, smart controls, readers and other monitoring devices, while various events occur in the physical world. It is hard for users including people and smart things to master valuable information hidden in the massive data, which is more useful and understandable than raw data for users to get the crucial points for problems-solving. Thus, how to automatically and actively extract the knowledge of events and their internal links from the big data is one key challenge for the future Web of Things. This paper proposes an effective approach to extract events and their internal links from large scale data leveraging predefined event schemas in the Web of Things, which starts with grasping the critical data for useful events by filtering data with well-defined event types in the schema. A case study in the context of smart campus is presented to show the application of proposed approach for the extraction of events and their internal semantic links.

  8. Hydroelectric construction project on the Sheldrake River at Riviere-au-Tonnerre : public inquiry report

    International Nuclear Information System (INIS)

    2009-09-01

    The Societe d'Energie Riviere Sheldrake Inc. has proposed the construction of a hydroelectric facility on the Sheldrake River at Riviere-au-Tonnerre in the regional municipality of Minganie in Quebec. The project involves the construction of a headrace canal, intake, tunnel, powerhouse, access roads, electrical transmission line, spillway, weir and a bridge over the Sheldrake River. The proposed development was subject to an environmental evaluation process and public consultation. Quebec's environmental public hearing board held a public hearing on the draft development of the project to hear the concerns and views of the public and stakeholders. The hearing focused on a number issues, such as reasons for the project, its location and socio-economic impacts. The cumulative environmental effects of the project were also examined. The primary concerns were the economic repercussions of the project and its effect on tourism and fish, including salmon. The Board determined that the project would create jobs in a region affected by unemployment and the decay of its municipalities and that it would stimulate the local and regional economy. However, the Board determined that changes to the project are required to minimize impacts on the natural environment. The project proponent must monitor instream flows to ensure that fish passage facilities meet regulations. In addition, since the proposed project crosses 3 bogs, the developer must compensate for lost wetlands. A 10-year follow-up is required to assess the recovery of these environments. The developer must also maintain the aesthetic quality of the Courbe du Sault Falls in order to maintain the eco-tourism in the region. refs., figs.

  9. 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.

  10. Yield curve event tree construction for multi stage stochastic programming models

    DEFF Research Database (Denmark)

    Rasmussen, Kourosh Marjani; Poulsen, Rolf

    Dynamic stochastic programming (DSP) provides an intuitive framework for modelling of financial portfolio choice problems where market frictions are present and dynamic re--balancing has a significant effect on initial decisions. The application of these models in practice, however, is limited....... Indeed defining a universal and tractable framework for fully ``appropriate'' event trees is in our opinion an impossible task. A problem specific approach to designing such event trees is the way ahead. In this paper we propose a number of desirable properties which should be present in an event tree...

  11. 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.

  12. 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.

  13. The sequence coding and search system: an approach for constructing and analyzing event sequences at commercial nuclear power plants

    International Nuclear Information System (INIS)

    Mays, G.T.

    1990-01-01

    The U.S. Nuclear Regulatory Commission (NRC) has recognized the importance of the collection, assessment, and feedback of operating experience data from commercial nuclear power plants and has centralized these activities in the Office for Analysis and Evaluation of Operational Data (AEOD). Such data is essential for performing safety and reliability analyses, especially analyses of trends and patterns to identify undesirable changes in plant performance at the earliest opportunity to implement corrective measures to preclude the occurrence of a more serious event. One of NRC's principal tools for collecting and evaluating operating experience data is the Sequence Coding and Search System (SCSS). The SCSS consists of a methodology for structuring event sequences and the requisite computer system to store and search the data. The source information for SCSS is the Licensee Event Report (LER), which is a legally required document. This paper describes the objectives of SCSS, the information it contains, and the format and approach for constructing SCSS event sequences. Examples are presented demonstrating the use of SCSS to support the analysis of LER data. The SCSS contains over 30,000 LERs describing events from 1980 through the present. Insights gained from working with a complex data system from the initial developmental stage to the point of a mature operating system are highlighted. Considerable experience has been gained in the areas of evolving and changing data requirements, staffing requirements, and quality control and quality assurance procedures for addressing consistency, software/hardware considerations for developing and maintaining a complex system, documentation requirements, and end-user needs. Two other approaches for constructing and evaluating event sequences are examined including the Accident Precursor Program (ASP) where sequences having the potential for core damage are identified and analyzed, and the Significant Event Compilation Tree

  14. The influence of HIV disease events/stages on smoking attitudes and behaviors: project STATE (Study of Tobacco Attitudes and Teachable Events).

    Science.gov (United States)

    Vidrine, Damon J; Fletcher, Faith E; Buchberg, Meredith K; Li, Yisheng; Arduino, Roberto C; Gritz, Ellen R

    2014-02-11

    Given the increase in life expectancy among HIV-positive individuals attributable to antiretroviral therapies, cigarette smoking now represents one of the most salient health risks confronting the HIV-positive population. Despite this risk, very few efforts to date have been made to target persons living with HIV for smoking cessation treatment, and no efforts have been made to explore the role of cognitions and HIV disease events/stages on smoking outcomes. The purpose of the study, Project STATE (Study of Tobacco Attitudes and Teachable Events), is to prospectively examine the relationship between HIV events/stages, perceived impact of HIV disease, attitudes about cigarette smoking, and smoking behaviors. This study employs a prospective design. Patients are recruited at the time of their first physician visit at a large inner city HIV-clinic--Thomas Street Health Center (TSHC). Consenting participants then complete a baseline assessment. All participants are offered standard care smoking cessation treatment. Follow-up assessments are completed on four subsequent occasions: 3, 6, 9, and 12 months post-baseline. These follow-up assessments are scheduled to coincide with routine clinic appointments with their TSHC physicians. In addition, each participant is given a prepaid cell phone at the time of enrollment and asked to complete brief phone assessments weekly for the first three months of the study period. By evaluating events/stages of HIV disease as potential teaching moments for smoking cessation, findings from this study could be used to develop treatments tailored to an individual's stage of HIV disease. This study design will enable us to carefully track changes in smoking behavior over time, and to link these changes to both the course of HIV disease and/or to the participant's' perceived impact of HIV. By identifying optimal time points for intervention, the findings from this study will have the potential to maximize the efficiency and efficacy of

  15. Design, construction, and operation of the contact size reduction facility at the West Valley Demonstration Project

    International Nuclear Information System (INIS)

    Frank, D.E.; Reeves, S.R.; Valenti, P.J.

    1988-05-01

    This paper describes the design, construction and initial operation of the Contact-Handled Size Reduction Facility (CSRF) at the West Valley Demonstration Project. The facility was constructed to size reduce contaminated tanks, piping, and other metallic scrap and package the scrap for disposal. In addition, the CSRF has the capability to decontaminate scrap prior to disposal. The anticipated result of decontaminating the scrap is to reduce waste classified as transuranic or low-level Class B and C to Class A or release for unrestricted use as nonradioactive equipment. 10 figs., 1 tab

  16. Building defects in Danish construction: project characteristics influencing the occurrence of defects at handover

    DEFF Research Database (Denmark)

    Schultz, Casper Siebken; Jørgensen, Kirsten; Bonke, Sten

    2015-01-01

    Defects in construction have gained much attention from both the public and academia. Danish construction is no exception and a number of political initiatives have been established to address the unsatisfying amounts of defects. One of the political initiatives, benchmarking, collects and provides...... those with many and/or serious defects. The article reviews the results from studying two quantitative data sets: (I) benchmarking data from 329 building projects and 621 contracts and (II) questionnaire data from an electronic survey comprising 130 contractors. This study provides in-depth knowledge...

  17. 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.

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

    Science.gov (United States)

    Leong, Tiong Kung; Ariff, Mohd. Shoki Md.

    2014-01-01

    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. PMID:24701182

  19. 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.

  20. Using project performance to measure effectiveness of quality management system maintenance and practices in construction industry.

    Science.gov (United States)

    Leong, Tiong Kung; Zakuan, Norhayati; Mat Saman, Muhamad Zameri; Ariff, Mohd Shoki Md; Tan, Choy Soon

    2014-01-01

    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. 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.

  2. 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%.

  3. The Hydraulic Project Włocławek: Design, Studies, Construction and Operation

    Directory of Open Access Journals (Sweden)

    Wojciech Majewski

    2015-03-01

    Full Text Available The Hydraulic Project Włocławek was commissioned in 1970 as the first barrage of the Lower Vistula Cascade (LVC. The purpose of the LVC was to create an important source of hydro-energy and inland navigation route connecting central Poland with the port city of Gdańsk. Along the Lower Vistula (LV important cities and industrial centres are located. The Włocławek project still remains the only barrage on the LV thus creating a number of problems. The paper presents the basic hydrological and hydraulic data for the Vistula river, and describes the Włocławek project, hydraulic model investigations conducted in the design phase, the construction of the project and the main problems, attendant on its use, including the winter flood of 1982 in the upper part of the Włocławek reservoir. The paper ends with conclusions on project construction and exploitation. The next barrage downstream from Włocławek is proposed.

  4. Geological events in submerged areas: attributes and standards in the EMODnet Geology Project

    Science.gov (United States)

    Fiorentino, A.; Battaglini, L.; D'Angelo, S.

    2017-12-01

    EMODnet Geology is a European Project which promotes the collection and harmonization of marine geological data mapped by various national and regional mapping projects and recovered in the literature, in order to make them freely available through a web portal. Among the several features considered within the Project, "Geological events and probabilities" include submarine landslides, earthquakes, volcanic centers, tsunamis, fluid emissions and Quaternary faults in European Seas. Due to the different geological settings of European sea areas it was necessary to elaborate a comprehensive and detailed pattern of Attributes for the different features in order to represent the diverse characteristics of each occurrence. Datasets consist of shapefiles representing each event at 1:250,000 scale. The elaboration of guidelines to compile the shapefiles and attribute tables was aimed at identifying parameters that should be used to characterize events and any additional relevant information. Particular attention has been devoted to the definition of the Attribute table in order to achieve the best degree of harmonization and standardization according to the European INSPIRE Directive. One of the main objectives is the interoperability of data, in order to offer more complete, error-free and reliable information and to facilitate exchange and re-use of data even between non-homogeneous systems. Metadata and available information collected during the Project is displayed on the Portal (http://www.emodnet-geology.eu/) as polygons, lines and points layers according to their geometry. By combining all these data it might be possible to elaborate additional thematic maps which could support further research as well as land planning and management. A possible application is being experimented by the Geological Survey of Italy - ISPRA which, in cooperation with other Italian institutions contributing to EMODnet Geology, is working at the production of an update for submerged areas

  5. 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.

  6. 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.

  7. Towards the use of knotworking for increasing innovation in construction projects

    DEFF Research Database (Denmark)

    Klitgaard, Anne; Beck, Frederikke; Andersen, Michael

    2017-01-01

    Knotworking is an emerging collaboration form in the built environment, which promises to encourage innovation at Construction project level. This study of knotworking processes is part of a larger research program about collaboration in the built environment. In this study of Knotworking......, the focus has been on how the participating organizations and professionals can learn how to participate in knotworking. A facilitator was introduced to establish how facilitators can assist the participating organizations in a construction project to learn to produce knowledge and innovation through...... knotworking. The theoretical foundation is Activity Theory, the data collection method derives from applied ethnomethodology using a blend of video recording and participant observation. The data has been collected in a series of planning meetings and one workshop about building a new kindergarten...

  8. 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.

  9. 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.

  10. 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...

  11. The Jefferson Lab Quality Assurance Program for the SNS Superconducting Linac Construction Project

    International Nuclear Information System (INIS)

    Joseph Ozelis

    2003-01-01

    As part of a multi-laboratory collaboration, Jefferson Lab is currently engaged in the fabrication, assembly, and testing of 23 cryomodules for the superconducting linac portion of the Spallation Neutron Source (SNS) being built at Oak Ridge National Laboratory. As with any large accelerator construction project, it is vitally important that these components be built in a cost effective and timely manner, and that they meet the stringent performance requirements dictated by the project specifications. A comprehensive Quality Assurance (QA) program designed to help accomplish these goals has been implemented as an inherent component of JLab's SNS construction effort. This QA program encompasses the traditional spectrum of component performance, from incoming parts inspection, raw materials testing, through to sub-assembly and finished article performance evaluation

  12. 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.

  13. 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

  14. Development of a Blueprint Impact System of the risks on construction projects Implementation

    Directory of Open Access Journals (Sweden)

    Entisar Kadhim Rasheed

    2015-08-01

    Full Text Available In Production and Operations Management the specialists have tried to develop a strategy to counter the risks arising from the activities of the organization and of waste of various types and therefore the risk management in the contemporary framework represents a phenomenon of new quality, and can not be this phenomenon to take practical dimensions, but the development of culture of the organization towards the risks and deal with all aspects and paint ways to address them within an integrated program, and requires new skills and systems provide accurate information capable of coordination between the various parties within the organization. The research aims to develop a blue print to analyze the relationship between the impact of risk and stages of implementing of the project and, the effect of risk relationship with the type of contract, and the impact of risks to do with the type of construction works. In this paper a number of risks has been identified that have already occurred from the study of a number of construction projects completed and theoretical studies and interview a number of construction industry experts to determine the extent of the impact of these risks in each of these three axes in construction projects in Iraq for the purpose of responding and management. The study found a set of conclusions such as existing of priority in happiness of risks which proof that there is an relationship between the risks and sort of stage, contract and constructional work. In the light of what has been reached for the purpose of benefiting from the computer automated features a program have been used ( Vanguard Software System to build the decision tree in order to manage the risks according to their priority in happiness.

  15. FACTORS AFFECTING COST PERFORMANCE IN CONSTRUCTION PROJECTS WITHIN KELANTAN STATE IN MALAYSIA

    OpenAIRE

    ABDELNASER OMRAN; SITI NORHYDAYATON BINTI MAMAT

    2011-01-01

    This study investigates the factors affecting cost performance of construction projects in Kelantan State located in the east-coast part of Malaysia. It draws on relevant previous research in the theory of work on cost performance. Thirty-three contractors companies with different working grades in the state of Kelantan were participated in the study. Data were collected from the contractors using a questionnaire survey. The results indicated that the success factors affecting the cost perfor...

  16. 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.

  17. Application of Updated Construction and Demolition Waste Reduction Policy to Army Projects

    Science.gov (United States)

    2015-12-01

    recovering materials for reuse and recycling from demolition, new construction, and renovation and repurposing projects. In its efforts to improve the...Building contents; reuse and recycling potential (including the follow- ing specific materials, products and components that are potentially re- usable...conventional demolition. Implement deconstruction wherever markets or on-site reuse opportunities exist or are anticipated.  Page 24, 3-7 REDUCE

  18. The technique of the modified hamiltonian for construction of the spin-projected wave function

    International Nuclear Information System (INIS)

    Tsaune, A.Ya.; Glushkov, V.N.

    1991-01-01

    A method is suggested to construct the wave function, which is an eigenfunction for operator S 2 . A combination of Lowdin's projection operators and the method of taking into account the orthogonality conditions in variational problems previously developed by the authors is used for determination of the spin-current wave functions component. It is shown that the suggested method gives better results for the energies that the traditional restricted Hartee-Fock scheme

  19. Defense Infrastructure: In-Kind Construction and Renovation Projects Initiated by DOD during Fiscal Year 2013

    Science.gov (United States)

    2015-09-01

    nation funded constructione $8,298,953e 8. Army Garrison Humphreyse Project title: Construct Middle School and Elementary Schoole Purpose...Housing and communitye Description: Provide 875-student elementary school and 1,100-student middle schoole Yongsan Relocation Pland,e Host...a child development center with adjacent outdoor play area for 195 to 225 school -age (6 to10 years) childrene Yongsan Relocation Pland,e Host

  20. Effects of procurement on project performance:a survey of Swedish construction clients

    OpenAIRE

    Eriksson, Per-Erik; Vennström, Anders

    2009-01-01

    In order to increase the efficiency of the construction industry development and improvement of procurement procedures is vital. The purpose of this investigation is to increase the understanding of how procurement procedures affect project performance. A procurement model including eight hypotheses is first developed on the basis of a literature review and then tested through multivariate statistical techniques based on empirical data collected through a survey investigation of 106 Swedish c...

  1. Manhattan Project buildings and facilities at the Hanford Site: A construction history

    International Nuclear Information System (INIS)

    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

  2. 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

  3. 42 CFR 137.338 - Must funds from other sources be incorporated into a construction project agreement?

    Science.gov (United States)

    2010-10-01

    ... SELF-GOVERNANCE Construction Project Assumption Process § 137.338 Must funds from other sources be... 42 Public Health 1 2010-10-01 2010-10-01 false Must funds from other sources be incorporated into a construction project agreement? 137.338 Section 137.338 Public Health PUBLIC HEALTH SERVICE...

  4. 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...

  5. Events

    Directory of Open Access Journals (Sweden)

    Igor V. Karyakin

    2016-02-01

    Full Text Available The 9th ARRCN Symposium 2015 was held during 21st–25th October 2015 at the Novotel Hotel, Chumphon, Thailand, one of the most favored travel destinations in Asia. The 10th ARRCN Symposium 2017 will be held during October 2017 in the Davao, Philippines. International Symposium on the Montagu's Harrier (Circus pygargus «The Montagu's Harrier in Europe. Status. Threats. Protection», organized by the environmental organization «Landesbund für Vogelschutz in Bayern e.V.» (LBV was held on November 20-22, 2015 in Germany. The location of this event was the city of Wurzburg in Bavaria.

  6. 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.

  7. The application of the unmanned aerial vehicle remote sensing technology in the FAST project construction

    Science.gov (United States)

    Zhu, Boqin

    2015-08-01

    The purpose of using unmanned aerial vehicle (UAV) remote sensing application in Five-hundred-meter aperture spherical telescope (FAST) project is to dynamically record the construction process with high resolution image, monitor the environmental impact, and provide services for local environmental protection and the reserve immigrants. This paper introduces the use of UAV remote sensing system and the course design and implementation for the FAST site. Through the analysis of the time series data, we found that: (1) since the year 2012, the project has been widely carried out; (2) till 2013, the internal project begun to take shape;(3) engineering excavation scope was kept stable in 2014, and the initial scale of the FAST engineering construction has emerged as in the meantime, the vegetation recovery went well on the bare soil area; (4) in 2015, none environmental problems caused by engineering construction and other engineering geological disaster were found in the work area through the image interpretation of UAV images. This paper also suggested that the UAV technology need some improvements to fulfill the requirements of surveying and mapping specification., including a new data acquisition and processing measures assigned with the background of highly diverse elevation, usage of telephoto camera, hierarchical photography with different flying height, and adjustment with terrain using the joint empty three settlement method.

  8. 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.

  9. Delineating Supply Chain Management (SCM Features in Construction Project Delivery: The Nigerian Case

    Directory of Open Access Journals (Sweden)

    Benedict Amade

    2017-04-01

    Full Text Available This study sought to delineate SCM features using the analytical hierarchy process (AHP with a view to incorporating it into the delivery of construction projects in Nigeria. The study adopted an exploratory research design (quantitative and qualitative methods. A purposive and convenient sampling technique was deployed with the aid of semi-structured interview, case study; questionnaire survey in a construction firm in Port-Harcourt, Rivers State, Nigeria. Questionnaires were used to collect primary data after being pre-tested via a pilot study for validity and reliability. The data collected were analysed using the AHP. Findings from the study shows that the following features are key; Instituting trust and long term relationships amongst supply chain partners (ITP, supply chain finance (SCF, supply chain and continuous performance measurement (SCCPM, information technology (IT, quality management (QM, supply base management (SBM, senior management’s commitment (SMC and supply chain orientation (SCO. In delivering construction projects to success using the SCM approach, adequate attention and emphasis should be accorded to the aforementioned important features in the order they appear as they would aid in effecting the much needed success. It is also expected that the features would further be beneficial to construction firms as it would enable the firms to manage, measure and evaluate the gains ensuing from the deployment of SCM techniques.

  10. A review of the design, construction and development of the PUSPATI project

    International Nuclear Information System (INIS)

    Ahmad Tajuddin Ali.

    1983-01-01

    The setting up of the Tun Ismail Atomic Research Centre (PUSPATI) was decided upon in September 1972 and soon after, plans were underway for the purchase of a research reactor and the construction of a research centre to house it. The centre was originally planned to be located at Sungai Buloh about 20 km to the north-west of Kuala Lumpur. However, in September 1978, a decision was made to locate the centre at Bangi, about 32 km to south of Kuala Lumpur. Earth work was started in January 1979 with clearing of the forest at the proposed site. Building construction started in February 1980. By September 1981, the reactor building was practically completed and enable reactor construction to begin. This was finished on July 15, 1982 when the reactor was officially handed over to PUSPATI. Work on the rest of the complex fell behind schedule and was only completed in July 1983 when PUSPATI moved in to occupy the research laboratories. The implementation of the PUSPATI project has been completed not without its share of problems. Its completion also marks the beginning of a new era for the development of nuclear science and technology in this country. This paper reviews the design, construction and development of the entire project. (author)

  11. 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.

  12. Using Critical Thresholds to Customize Climate Projections of Extreme Events to User Needs and Support Decisions

    Science.gov (United States)

    Garfin, G. M.; Petersen, A.; Shafer, M.; MacClune, K.; Hayhoe, K.; Riley, R.; Nasser, E.; Kos, L.; Allan, C.; Stults, M.; LeRoy, S. R.

    2016-12-01

    Many communities in the United States are already vulnerable to extreme events; many of these vulnerabilities are likely to increase with climate change. In order to promote the development of effective community responses to climate change, we tested a participatory process for developing usable climate science, in which our project team worked with decision-makers to identify extreme event parameters and critical thresholds associated with policy development and adaptation actions. Our hypothesis is that conveying climate science and data through user-defined parameters and thresholds will help develop capacity to streamline the use of climate projections in developing strategies and actions, and motivate participation by a variety of preparedness planners. Our team collaborated with urban decision-makers, in departments that included resilience, planning, public works, public health, emergency management, and others, in four cities in the semi-arid south-central plains and intermountain areas of Colorado, New Mexico, Oklahoma, and Texas. Through an iterative process, we homed in on both simple and hybrid indicators for which we could develop credible city-specific projections, to stimulate discussion about adaptation actions; throughout the process, we communicated information about confidence and uncertainty, in order to develop a blend of historic and projected climate data, as appropriate, depending on levels of uncertainty. Our collaborations have resulted in (a) the identification of more than 50 unique indicators and thresholds across the four communities, (b) the development of adaptation action strategies in each community, and (c) the implementation of actions, ranging from a climate leadership training program for city staff members, to a rainwater capture project to improve responses to expected increases in both stormwater runoff and water capture for drought episodes.

  13. 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

  14. 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...

  15. 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.

  16. The Comparative Effectiveness of Variants of Construction of Electricity Export Projects

    Directory of Open Access Journals (Sweden)

    Anatoly Vladimirovich Lagerev

    2014-06-01

    Full Text Available The study describes a methodological approach that evaluates the comparative efficiency of construction of export-oriented power plants and transmission lines taking into account the development of power industry in the region and uncertainty (ambiguity of initial information. At the first stage the authors determine socio-economic effects of each project of construction of export-oriented power plants. With the help of optimization models they choose options that can guarantee the balanced and cost-effective development of the regional electric power system. Then using a simulation model the researchers assess commercial viability of previously selected projects. The article applies this approach for selecting the preferred option of electricity export from Eastern Siberia to China. This study shows that the project of CPP based on Kovykta natural gas with electricity transmission line to Chinese border (near Zabaikalsk is more preferable one in comparison with other projects (CPP based on Kansk-Achinsk coal in Krasnoyarsky krai; CPP based on coal in the Republic of Buryatia and Zabaikalsky krai (Olon-Shibirskaya CPP; New Kharanorskaya CPP; CPP based on Mugunsky coal in Irkutskaya oblast

  17. The FLARES project: An innovative detector technology for rare events searches

    Energy Technology Data Exchange (ETDEWEB)

    Capelli, S., E-mail: capelli@mib.infn.it [Dipatimento di Fisica, Università di Milano Bicocca, piazza della Scienza 3, 20126 Milano (Italy); INFN Sezione di Milano Bicocca, piazza della Scienza 3, 20126 Milano (Italy); Baldazzi, G. [Università di Bologna, Viale Berti Pichat 6/2, 40127 Bologna (Italy); INFN Sezione di Bologna, Viale Berti Pichat 6/2, 40127 Bologna (Italy); Beretta, M. [Dipatimento di Fisica, Università di Milano Bicocca, piazza della Scienza 3, 20126 Milano (Italy); INFN Sezione di Milano Bicocca, piazza della Scienza 3, 20126 Milano (Italy); Bonvicini, V. [Dipartimento di Scienza dei Materiali, Università di Milano Bicocca, Via Roberto Cozzi 55, 20126 Milano (Italy); Campana, R. [Università di Bologna, Viale Berti Pichat 6/2, 40127 Bologna (Italy); INFN Sezione di Bologna, Viale Berti Pichat 6/2, 40127 Bologna (Italy); Evangelista, Y. [INAF - IAPS, Via del Fosso del Cavaliere 100, I-00133, Roma (Italy); INFN Sezione di Roma Tor Vergata, Via della Ricerca Scientifica 1, I-00133 Roma (Italy); Fasoli, M. [INFN Sezione di Milano Bicocca, piazza della Scienza 3, 20126 Milano (Italy); Dipartimento di Scienza dei Materiali, Università di Milano Bicocca, Via Roberto Cozzi 55, 20126 Milano (Italy); Feroci, M. [INAF - IAPS, Via del Fosso del Cavaliere 100, I-00133, Roma (Italy); INFN Sezione di Roma Tor Vergata, Via della Ricerca Scientifica 1, I-00133 Roma (Italy); Fuschino, F. [INFN Sezione di Bologna, Viale Berti Pichat 6/2, 40127 Bologna (Italy); Università di Bologna, Viale Berti Pichat 6/2, 40127 Bologna (Italy); Gironi, L. [Dipatimento di Fisica, Università di Milano Bicocca, piazza della Scienza 3, 20126 Milano (Italy); INFN Sezione di Milano Bicocca, piazza della Scienza 3, 20126 Milano (Italy); and others

    2017-02-11

    FLARES is an innovative project in the field of rare events searches, such as the search for the neutrinoless double beta decay. It aims at demonstrating the high potential of a technique that combines ultra-pure scintillating crystals with arrays of high performance silicon drift detectors, operated at about 120 K, to reach a 1% level energy resolution. The proposed technique will combine in a single device all the demanding features needed by an ideal experiment looking for rare events. The performance of a first production of matrices of silicon drift detectors as well as first measurements of the low temperature light yield of a selection of high purity scintillating crystals will be presented and discussed.

  18. A Multi-Objective Trade-Off Model in Sustainable Construction Projects

    Directory of Open Access Journals (Sweden)

    Guangdong Wu

    2017-10-01

    Full Text Available Based on the consideration of the relative importance of sustainability-related objectives and the inherent nature of sustainable construction projects, this study proposes that the contractor can balance the levels of efforts and resources used to improve the overall project sustainability. A multi-objective trade-off model using game theory was established and verified through simulation and numerical example under a moral hazard situation. Results indicate that effort levels of the contractor on sustainability-related objectives are positively related to the outcome coefficient while negatively to the coefficients of effort cost of the relevant objectives. High levels of the relative importance of sustainability-related objectives contribute to high levels of effort of the contractor. With the variation in effort levels and the coefficient of benefit allocation, the project net benefit increases before declining. The function of project benefit has a marked peak value, with an inverted “U” shape. An equilibrium always exists as for the given relative importance and coefficients of the effort costs of sustainability-related objectives. Under this condition, the owner may offer the contractor a less intense incentive and motivate the contractor reasonably arranging input resources. The coefficient of benefit allocation is affected by the contractor characteristic factors and the project characteristic factors. The owner should balance these two types of factors and select the most appropriate incentive mechanism to improve the project benefit. Meanwhile, the contractor can balance the relative importance of the objectives and arrange the appropriate levels of effort and resources to achieve a sustainability-related objective. Very few studies have emphasized the effects of the relative importance of sustainability-related objectives on the benefits of sustainable construction projects. This study therefore builds a multi-objective trade

  19. Events

    Directory of Open Access Journals (Sweden)

    Marina Tkacheva

    2010-12-01

    Full Text Available Baikal Economic ForumInternational Scientific and Practical Conference"Culture of Wood - Wood in Culture"Summer Ateliers of UrbanistsMemorandum of Understanding between UIA and Active House AllianceKorean Team Wins the First Prize in the VELUX AwardUIA Professional Practice Commission"Zodchestvo 2010" International FestivalRainbow of "Zodchestvo 2010" in ManezhThree Opinions on One Book about Gogol's Two"Soviet Modernism" BookV Plenum of the Board of the Union of Architects of RussiaXXX Meeting of Chief ArchitectsCompetition of Graduation ProjectsInternational Day of Architecture

  20. 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.