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Showing papers in "Journal of Management in Engineering in 2015"


Journal ArticleDOI
TL;DR: In this article, the authors investigated the major factors inhibiting the adoption of off-site construction with reference to the Chinese construction market and identified 30 factors influencing the use of OSC through a literature review, questionnaire survey, and face-to-face interview with professionals in the construction industry.
Abstract: Off-site construction (OSC) has been regarded as an effective means of improving construction quality and efficiency. The adoption of OSC has been slower in developing countries such as China than in developed countries, and research on the barriers inhibiting the sector’s growth is inadequate. This paper aims to investigate the major factors inhibiting the adoption of OSC with reference to the Chinese construction market. Thirty factors influencing the use of OSC were identified through a literature review, questionnaire survey, and face-to-face interview with professionals in the construction industry. A questionnaire was sent out to developers in China, and 83 completed questionnaires were retrieved. Ranking analysis was used to identify 18 critical factors. The top three barriers are “absence of government regulations and incentives,” “high initial cost,” and “dependence on traditional construction methods.” Factor analysis enables grouping of the 18 critical factors into five categories, name...

289 citations


Journal ArticleDOI
TL;DR: An acceptance model for BIM in construction organizations using structural equation modeling (SEM) is proposed, including the BIM acceptance model (BAM), which was identified through a literature review about technology acceptance-behavior related theories.
Abstract: Substantial research has been performed on the data standards and exchanges in the Architectural, Engineering, Construction/Facility Management (AEC/FM) industry over the past several years. The growing popularity of building information modeling (BIM) technology is based heavily upon the perception that it can facilitate the sharing and reuse of information during a project life cycle. Although many researchers and practitioners are in agreement about the potential applicability and benefit of BIM in construction, it is still unclear why BIM is adopted, and what factors enhance implementation of BIM. Thus, BIM acceptance and use remains a central concern of BIM research and practice. Therefore, we propose an acceptance model for BIM in construction organizations using structural equation modeling (SEM). The key components, including the BIM acceptance model (BAM), are identified through a literature review about technology acceptance-behavior related theories, and was then consolidated by intervi...

197 citations


Journal ArticleDOI
TL;DR: In this paper, the relationship between management behavior and employees' individual behavior in construction has been clearly studied and precisely depicted, and two dimensions of supervisory behavior were identified, namely (1) training and preventive action, and (2) reactive...
Abstract: As a major organizational antecedent of worker safety behavior (WSB), management behavior is drawing more and more academic attention because it tends to be the root cause of occupational safety accidents. The current behavior-based safety (BBS) practices in construction do not sufficiently take management behavior into consideration, which leads to superficial and nonpersistent intervention impacts on unsafe behavior. In academia, the relationship between management behavior and employees’ individual behavior in construction has not been clearly studied and precisely depicted. This paper is aimed at discovering those management behaviors which can significantly impact worker safety behavior in construction projects and depict the exact impacting paths. Supervisors were on the focus because they interact with workers most profoundly and frequently among all levels of the management. Two dimensions of supervisory behavior were identified, namely (1) training and preventive action, and (2) reactive ...

194 citations


Journal ArticleDOI
TL;DR: In this article, the status and the trends in megaproject research were investigated by conducting a structured literature review and a total of 85 relevant articles identified from eight peer-reviewed CEM journals between 2000 and 2010 were analyzed.
Abstract: The rapid growth of construction megaprojects worldwide has triggered a growing number of papers published in this area in the past two decades, suggesting that construction megaproject management has become an emerging area in the field of construction engineering and management (CEM). This study aims to investigate the status and the trends in megaproject research by conducting a structured literature review. A total of 85 relevant articles identified from eight peer-reviewed CEM journals between 2000 and 2010 were analyzed based on the number of articles published annually, institutional and regional contributions, citations, and categorization of research interests and methodologies. Analysis results indicated that developed countries, such as the United Kingdom, the United States, and Australia, have enjoyed significant advantages in megaproject research because of their greater experience, while megaproject research in developing countries, such as Russia, India, Turkey, and Vietnam, remains...

161 citations


Journal ArticleDOI
TL;DR: In this article, the critical success factors (CSFs) of PPP infrastructure projects under the auspices of the project management success perspective are identified and examined, and a life-cycle CSF framework with embedded learning mechanisms is developed.
Abstract: Public-private partnerships (PPPs) have been widely used in the procurement of economic and social infrastructure projects. Since the operation of more and more PPP projects, there have been a number of explorations on the factors that contribute to their success. Project success is often expressed by the quality of the product and project management success. Bearing in mind these perspectives, the critical success factors (CSFs) of PPP infrastructure projects under the auspices of the project management success perspective are identified and examined. A life-cycle CSF framework with embedded “learning mechanisms” is developed. The proposed framework will enable public and private sector stakeholders to possess an ameliorated understanding of the factors that are critical to successfully implementing a PPP contract strategy.

149 citations


Journal ArticleDOI
TL;DR: In this article, the authors highlight the risks associated with highway construction projects in the United Arab Emirates (UAE) and identify the most significant risks through a detailed literature review and a questionnaire is developed to solicit the opinion of construction professionals as to the probability and impact of those risks in addition to their proper allocation.
Abstract: Highway construction projects carry substantial risks. This paper highlights the risks associated with highway construction projects in the United Arab Emirates (UAE). Thirty-three risks are identified through detailed literature review. A questionnaire is then developed to solicit the opinion of construction professionals as to the probability and impact of those risks in addition to their proper allocation. Fifty-one surveys were completed and used in the analysis. The priority of each risk is calculated by multiplying the probability with the impact for each risk. The priority helps identify the most significant risks. The relative importance index (RII) for the risk priority is calculated based on all responses for each risk. The most significant risks include inefficient planning, unexpected ground utilities, quality and integrity of design, delays in approvals, and delays in expropriations. Internal project risks are found to be more significant than external risks. Contractors and consultan...

147 citations


Journal ArticleDOI
TL;DR: In this paper, a system dynamics model for the causation of unsafe behaviors (SD-CUB) is developed to characterize the causal structure of the system, which involves relationships among management, individuals, and environmental conditions that can eventually lead to workers' unsafe behaviors.
Abstract: The unsafe behaviors of construction workers are often the immediate causes of construction accidents, but the underlying causation of such behaviors are not well understood. This research regards the management of construction safety as a system, and seeks to use system dynamics to demonstrate how the system influences construction workers in terms of unsafe behaviors. First, individual and environmental conditions that can lead to an unsafe behavior are identified through a holistic cognitive analysis and management conditions that affect such conditions are identified. Second, a system dynamics model for the causation of unsafe behaviors (SD-CUB) is developed to characterize the causal structure of the system. The SD-CUB model involves relationships among management, individuals, and environmental conditions that can eventually lead to workers’ unsafe behaviors. Third, a variety of model tests are conducted to build the confidence of the SD-CUB model. A five-week survey and observation on a bui...

138 citations


Journal ArticleDOI
TL;DR: In this article, the authors investigated the causes of delay in construction projects in oil and gas processing facilities in Oman and serves as a case study for the Gulf Cooperation Council (GCC) countries.
Abstract: Several studies investigating the causes of delay in projects in the construction industry have been conducted worldwide. This study investigates the causes of delay in construction projects in oil and gas processing facilities in Oman and serves as a case study for the Gulf Cooperation Council (GCC) countries. Using a questionnaire, data were collected from 59 project managers employed in different organizations in the oil and gas industry in Oman. The survey results showed a high degree of agreement among the perceptions of project stakeholders, clients, contractors, and consultants on the causes of project delay, and there is no evidence to suggest that the causes of project delay differ significantly according to organization size or organizational ownership. Moreover, seven factors were identified as the major causes of project delay. Although six of these identified elements are general factors that can account for delay in any project in any industry, one of them—poor interaction with vendors in the engineering and procurement stages—is found to be unique to construction projects in the oil and gas industry. The findings of this study could be of value to organizations that are planning to conduct construction projects for oil and gas processing facilities in Oman and other nations with similar environments, such as the GCC countries.

131 citations


Journal ArticleDOI
TL;DR: An in-depth review of mainstream studies of ICT-supported AEC organizations published in last 15 years (1998–2012) is presented and lessons learned from ICT practical implementation are learned.
Abstract: Information and communication technology (ICT) has had enormous effects on the development of architecture, engineering, and construction (AEC) organizations in past decades. The effects have resonated in various disciplines, such as organizational efficiency, communication approach, and employee behavior. However, a comprehensive and in-depth review of the ICT applied in the AEC organization is missing from the current literature. To fill this gap, this paper presents an in-depth review of mainstream studies of ICT-supported AEC organizations published in last 15 years (1998–2012). A total of 145 articles from 12 construction and IT-related journals are identified and have been thoroughly reviewed. This review is divided into four parts: (1) synthesis and general trend of existing literature; (2) lessons learned from ICT practical implementation; (3) enabling technologies of ICT applications; and (4) ICT-induced organizational outcomes. Throughout this paper the authors summarize and categorize d...

115 citations


Journal ArticleDOI
TL;DR: In this paper, a holistic approach that strategically plans for BIM execution in green building projects is proposed, where the authors find that green BIM can improve project outcomes, and facilitate the accomplishment of established sustainability goals.
Abstract: Companies that embrace both building information modeling (BIM) and green building are making conscientious efforts to pursue the synergies between the two, namely the green BIM practice. When done right, project teams find that green BIM can improve project outcomes, and facilitate the accomplishment of established sustainability goals. Nevertheless, green BIM remains an emerging trend to the majority of the industry, and its full potential is yet to be explored according to recent market research reports. The hypothesis of this research is that for companies to succeed in practicing green BIM, a holistic approach that strategically plans for BIM execution in green building projects is needed. The BIM project execution planning guidelines (PEPG) is widely adopted today to offer general guidance and standardized workflow of strategic BIM implementation. PEPG is not meant to and lacks the specificity to address green building projects in particular. However, the popularity of PEPG is conceived as a...

110 citations


Journal ArticleDOI
TL;DR: Wang et al. as mentioned in this paper investigated the causes of rework in construction projects and identified a total of 39 causes through a comprehensive literature review and semistructured interviews with 13 experienced construction professionals in China.
Abstract: Although rework is a common phenomenon in the Chinese construction industry and significantly affects project success, the reasons for rework remain largely unknown and most construction companies are unable to manage the issue effectively. To investigate the causes of rework in construction projects, a total of 39 causes were first identified through a comprehensive literature review and semistructured interviews with 13 experienced construction professionals in China. A questionnaire survey was further conducted to prioritize these causes, in which unclear project process management, poor quality of construction technology, and the use of poor construction materials rank the highest. Finally, a factor analysis revealed 11 major underlying dimensions of these causes, relating to design management, communication management, field management, project scope management, project process management, active rework, project plan changes, subcontractor management, contract management, owner capability, an...

Journal ArticleDOI
TL;DR: In this article, the authors explore the implementation of BIM through a sociotechnical systems (STS) perspective, with particular focus on multidisciplinary intraorganizational construction organization.
Abstract: The implementation of rapidly evolving building information modeling (BIM) technology is widely seen to increase the level of integration within the construction sector. However, even with the plethora of research and investment in the development and deployment of BIM, its use is not mainstream construction practice and the practicality of the implementation process is not well understood. The purpose of this paper is to explore the implementation of BIM through a sociotechnical systems (STS) perspective, with particular focus on multidisciplinary intraorganizational construction organization. The paper uses a case study approach to analyze the introduction of BIM in a multidisciplinary construction organization that has recently undergone a transition in its BIM implementation process. The STS approach demonstrates how technological implementation and its effects cannot be understood separately from the context of the implementing organization. The analysis shows that, due to the nature of the c...

Journal ArticleDOI
TL;DR: In this paper, the authors proposed a decision support tool for contractors before the bidding stage to quantify the probability of delay in construction projects in Turkey by using the relative importance index (RII) method incorporated into fuzzy logic.
Abstract: The aim of this paper is to propose a decision support tool for contractors before the bidding stage to quantify the probability of delay in construction projects in Turkey by using the relative importance index (RII) method incorporated into fuzzy logic. For this purpose, 83 delay factors were identified, categorized into 9 major groups through a detailed literature review process as well as interviews with experts from the construction industry. The relative importance of these delay factors and groups was quantified by using the relative importance index method. The ranking of the factors and groups was demonstrated according to their level of effect on delay. A delay assessment model was proposed using the fuzzy set theory by taking into account the delay factors characterized in construction projects. The assessment model was developed using a commercial software product. The proposed methodology was tested in a real case study; and the probability of the delay of the project was evaluated by...

Journal ArticleDOI
TL;DR: SimulEICon is an extension of BIM designed specifically to aid in the decision-making process during the design stage of a construction project, and it uses Microsoft Access for database-related operation...
Abstract: Sustainable construction is critical to the architecture-engineering-construction (AEC) industry. The consideration and selection of optimal building components is necessary in order to fulfill multiple objectives of sustainable construction, which are often conflicting. Today, information and communication technologies (ICT) such as building information modeling (BIM) are widely used in the construction industry for decision making during design and construction. However, due to the complexity of building and construction, supporting multiple-objective decision making is not trivial. Currently, BIM has limited capability to support such a process. This paper introduces Simulation of Environmental Impact of Construction (SimulEICon), which is an extension of BIM designed specifically to aid in the decision-making process during the design stage of a construction project. SimulEICon is an add-on to the Autodesk Revit Architecture software, and it uses Microsoft Access for database-related operation...

Journal ArticleDOI
TL;DR: In this paper, the authors present a systematic and generic framework reference for the practice of stakeholder management in the construction industry, which includes findings from empirical studies, comprising six interviews, a pilot study, a questionnaire survey in Hong Kong, and 15 interviews in Australia.
Abstract: This paper presents a systematic and generic framework reference for the practice of stakeholder management in the construction industry. It contains findings from empirical studies, comprising six interviews, a pilot study, a questionnaire survey in Hong Kong, and 15 interviews in Australia. Six activity groups (i.e., precondition, project data identification, stakeholder estimation, decision making, action and evaluation, and sustainable support) and a total of 18 activities within these groups and their interrelations formulate the main body of the framework. The proposed framework was validated by five real-life projects, the results of which confirm the applicability of the proposed framework. This study serves as a reference for project-management teams to systematically manage stakeholders in construction projects.

Journal ArticleDOI
TL;DR: A comprehensive review of traditional and emerging procurement practices in the construction industry can be found in this article, where the current procurement practices are analyzed by separating into three segments; processes, methods, and policies.
Abstract: Procurement is a key process in a construction project that creates and manages contacts. Procurement activities span from identification of requirements to project closeout, making it a perfect mode for integrating organizational strategic directions. Lately, the strategic importance of procurement has been widely acknowledged by academics as well as industry professionals. Construction procurement is a complex process with a large number of available options and directions. Ad hoc statistics show that modern initiatives such as sustainability, life-cycle costing, and standardization are getting integrated with procurement. However, there is no unified view in the construction industry on procurement as a project process. This paper presents a comprehensive review of traditional and emerging procurement practices in the construction industry. The current procurement practices are analyzed by separating into three segments; processes, methods, and policies. Furthermore, strengths and weaknesses of...

Journal ArticleDOI
TL;DR: In this article, the authors investigated the actions and decisions of private-sector partners by evaluating 35 failed public-private partnership (PPP) systems around the world, identifying a set of drivers responsible for the failures of transportation PPPs.
Abstract: Public-private partnership (PPP) models for public infrastructure delivery are becoming popular among government institutions around the world, due to their embedded potential value for money (VFM) to the public and governments themselves. The experience with infrastructure PPPs internationally have demonstrated many problems and partnership failures, where both the public and private sectors suffered huge losses. Motivated by a number of these failures, this study investigates the actions and decisions of private-sector partners by evaluating 35 failed transportation PPPs around the world. This paper identifies a set of drivers responsible for the failures of transportation PPPs, discusses the causal relationships between them, and finally evaluates a set of failure mechanisms initiated by the private-sector partners. It sheds light on the role of private-sector partners in terms of triggering failure mechanisms in transportation PPP failures. The identification of failure mechanisms discloses th...

Journal ArticleDOI
TL;DR: This research contributes an efficient and cost-effective solution to integrate BIM into MAR by developing a method and workflow that practitioners can use to consolidate, optimize, and visualize their data and models in an MAR environment.
Abstract: Mobile augmented reality (MAR) provides an easy-to-learn and easy-to-use method of accessing information in an intuitive way by visually parsing the environment and relating information in the form of augmentations to specific objects in specific places through handheld mobile devices. With the architecture, engineering, construction, and operation (AECO) industry widely adopting building information modeling (BIM) technologies, this research contributes an efficient and cost-effective solution to integrate BIM into MAR by developing a method and workflow that practitioners can use to consolidate, optimize, and visualize their data and models in an MAR environment. Moreover, a real-world application of this method, called BIM2MAR, within facility management practices is described in this paper. In the future, this research will investigate the integration of the BIM2MAR method into cloud computing, as well as conducting user-centered evaluation.

Journal ArticleDOI
TL;DR: In this paper, the authors presented a brief description of some chosen models aiding the bid/no bid decision that have been proposed in previous studies and designed their own model based on the fuzzy set theory.
Abstract: Deciding whether to take part in a bidding has a significant influence on the condition of a construction company. Not bidding deprives the contractor of the possibility of completing a given building project, yet the contractor has to consider whether, for example, he or she has the capability of carrying out a particular project. This paper presents a brief description of some chosen models aiding the bid/no bid decision that have been proposed in previous studies. Moreover, the authors designed their own model based on the fuzzy set theory. The basis of the decision model became the previous selection of factors influencing the decision. To achieve this, the authors conducted a study among contractors in 2010–2011 in Southern Poland. One hundred and fifty surveys were sent, providing 41% of answers. Based on the analysis of the surveys, according to the contractors, the top three most vital factors influencing the bid/no bid decision are (1) the type of work, (2) experience in similar projects,...

Journal ArticleDOI
TL;DR: In this article, the authors developed a transaction cost economics (TCE)-based theory of public-private partnership (PPP) as a governance structure and proposed an opportunism-focused transaction cost analysis (OTCA) to answer why and when PPPs may become a costly governance structure.
Abstract: While the higher efficiency due to better pooling of resources is greatly emphasized in public–private partnerships (PPPs), the embedded transaction inefficiencies are often understated or even ignored. Through the lens of transaction cost economics (TCE), this paper aims to answer why and when PPPs may become a costly governance structure. Specifically, the authors develop a TCE-based theory of PPPs as a governance structure. This theory suggests that three major opportunism problems embedded in infrastructure PPPs are possible to cause substantial transaction costs and render PPPs a costly governance structure. The three main opportunism problems are principal–principal problem, firm’s hold-up problem, and government-led hold-up problem. Moreover, project and institutional characteristics that may lead to opportunism problems are identified. Based on these characteristics, an opportunism-focused transaction cost analysis (OTCA) of PPPs as a governance structure is proposed to supplement the curr...

Journal ArticleDOI
TL;DR: In this paper, the green building certification process of existing buildings in developing countries is investigated, and a qualitative case study methodology has been employed to gain a better understanding of the critical success factors of the greening and certification process.
Abstract: Sustainability has become a major concern for the construction industry. There has been a growing emphasis on green buildings in the last decade. Renovation is critical in terms of improving the energy efficiency of the building stock. In this paper, the green building certification process of existing buildings in developing countries is investigated. A qualitative case study methodology has been employed to gain a better understanding of the critical success factors of the greening and certification process. In this respect, six leadership in energy and environmental design (LEED)-certified projects in Turkey are examined. A framework is used to analyze the components of this process, including the drivers, resources, green implementations, barriers, enablers, benefits, and impacts. Unavailability of approved materials, poor design of the buildings, and difficulties with the documentation process have been major barriers. The barriers have been overcome through the commitment of the owners, top ...

Journal ArticleDOI
TL;DR: In this paper, the authors investigate the VM implementation status in building projects in Singapore, to identify the critical success factors for VM, and to assess the potential risk factors associated with VM studies.
Abstract: Value management (VM) has been recognized as an effective method for achieving best value-for-money for clients in the construction industry. This study aims to investigate the VM implementation status in building projects in Singapore, to identify the critical success factors for VM, and to assess the potential risk factors associated with VM studies. To achieve these objectives, a comprehensive literature review was carried out and a questionnaire survey was performed with 50 professionals. The analysis results indicated that VM implementation was relatively low in the Singapore building projects and was significantly associated with project size. In addition, this study reported “communication and interaction among participants” as the most important factor for VM success. Furthermore, potential risk factors were assessed in different VM phases, and the analysis results suggested that “inadequate experience in VM” was the most critical risk factor and that there was agreement on the risk rankin...

Journal ArticleDOI
TL;DR: In this article, a methodology whereby a dynamic graphical description of 3D visualization is applied to simulate various scenarios with different crane models and types in order to select the most effective and efficient crane operation is presented.
Abstract: In heavy industrial construction, the on-site approach to construction is being gradually replaced by the off-site (modular-based) construction method, which is faster, results in better-quality products, and is more environmentally friendly. Given this trend, cranes have an increasingly strong influence on successful completion of modular-based construction projects with respect to project productivity and safety. However, in order to achieve safe and efficient equipment utilization, lift engineers and project managers face the challenge of designing collision-free crane operations prior to construction. This paper proposes a methodology whereby a dynamic graphical description of three-dimensional (3D) visualization is applied to simulate various scenarios with different crane models and types in order to select the most effective and efficient crane operation. It also presents the capabilities and limitations of 3D visualization in the application of crane lift planning. The case study demonstra...

Journal ArticleDOI
TL;DR: In this paper, the degree, betweenness, and closeness centrality measures of the project participants in a wayfinding signage project at a major airport construction project are calculated using social network analysis on the e-mail communication network between the participants.
Abstract: Building design and construction require the collective effort of diverse project participants. The coordination performance of these project participants is important for effective management and needs to be assessed periodically. However, there is no uncomplicated quantitative way to measure coordination. Measuring coordination is cumbersome and time-consuming particularly during the project execution phase. This study proposes an easy procedure for monitoring the coordinative performance of project participants. The degree, betweenness, and closeness centrality measures of the project participants in a wayfinding signage project at a major airport construction project are calculated using social network analysis on the e-mail communication network between the participants. A centrality index is defined for each firm based on the average of these three centrality measures. The firm’s coordination score is also calculated based on content analysis of the sent and received e-mails between the part...

Journal ArticleDOI
TL;DR: In this article, the authors identify the principal program organization factors (POFs) that are determinants of the program organization established by a client to manage a construction megaproject.
Abstract: Program management is increasingly regarded as a key approach to improving the performance of a construction megaproject through the coordinated management of its constituent projects. However, previous studies have seldom provided a pragmatic program management framework that can fully address the requirements of clients in managing construction megaprojects. Therefore, based on a case study of the Shanghai Expo construction, this study aims to identify the principal program organization factors (POFs) that are determinants of the program organization established by a client to manage a megaproject. Mixed research methods, such as case study, literature review, interviews, Delphi survey, and archival methods, are employed in this study. Consequently, 12 principal POFs, grouped under three main categories (environmental capability, core capacity, and motivational capability of the client’s program organization to manage its construction megaproject), are identified: (1) contextual understanding, (...

Journal ArticleDOI
TL;DR: In this paper, a mixed method of mathematical and simulation modeling was used to analyze performance and productivity at both the trade and project levels of a residential construction project, and performance metrics such as completion times, work-in-process levels, and delays were then measured in different real-life production scenarios.
Abstract: The meeting of milestones presents a constant challenge in construction projects. One root cause behind this challenge is the presence of variability in the project workflow. In fact, impacts of variability at both the trade contractor level and project level remain difficult to manage. This paper aims to analyze impacts of variability in the workflow caused by rework and fluctuating work quantities. Toward this end, production data of two residential construction companies were collected, and a mixed method of mathematical and simulation modeling was used to analyze performance and productivity at both the trade and project levels. Performance metrics such as completion times, work-in-process levels, and delays were then measured in different real-life production scenarios. The findings clearly show that the workflow variability significantly downgrades performance metrics by causing inflated completion times, longer queues of uncompleted jobs, and excessive delays, resulting in productivity loss...

Journal ArticleDOI
TL;DR: In this paper, the authors investigate and classify the types of visual devices that can be used in construction sites through multiple case studies carried out in nine construction companies actively implementing visual management (VM).
Abstract: Visual management (VM) is the managerial strategy of consciously integrating visual tools in workspaces with the aim of increasing transparency on construction sites. Several VM tools and approaches that had been originally developed in the manufacturing context were implemented in construction. However, research on the application of VM in construction as a managerial strategy is scarce. This paper aims to investigate and classify the types of visual devices that can be used in construction sites through multiple case studies carried out in nine construction companies actively implementing VM. It also discusses strategies for the implementation of VM in construction. The main contributions of this investigation are: (1) a VM tools taxonomy that can be used to identify VM application opportunities, providing a basis for evaluating the level of VM implementation in construction; and (2) identification of critical factors for the implementation and various features of the VM strategy in construction.

Journal ArticleDOI
TL;DR: A hybrid strategy based on genetic algorithms, and simulated annealing is presented for the resource-constrained project scheduling problem, which improves convergence of sole genetic algorithm and provides a competitive alternative for the RCPSP.
Abstract: Resource-constrained project scheduling problem (RCPSP) is a very important optimization problem in construction project management. Despite the importance of the RCPSP in project scheduling and management, commercial project management software provides very limited capabilities for the RCPSP. In this paper, a hybrid strategy based on genetic algorithms, and simulated annealing is presented for the RCPSP. The strategy aims to integrate parallel search ability of genetic algorithms with fine tuning capabilities of the simulated annealing technique to achieve an efficient algorithm for the RCPSP. The proposed strategy was tested using benchmark test problems and best solutions of the state-of-the-art algorithms. A sole genetic algorithm, and seven heuristics of project management software were also included in the computational experiments. Computational results show that the proposed hybrid strategy improves convergence of sole genetic algorithm and provides a competitive alternative for the RCPSP...

Journal ArticleDOI
TL;DR: In this article, the authors focused on the owner's characteristics and researched the key factors affecting the decision-making of the PDSs; other two aspects will be studied in the subsequent research.
Abstract: Decision-making of the project delivery system (PDS) is an important link in the entire lifecycle of a project and is one of the critical factors leading to project success. Traditionally, PDSs are usually chosen based on the decision-makers’ experience and knowledge and the project’s information, without exploring the inherent dependencies between influencing factors and the PDSs. Presently, the researches on the factors affecting the choice of PDSs are primarily concentrated on the owner’s characteristics, the project’s characteristics, and the project’s external environment. This paper mainly aimed at the owner’s characteristics and researched the key factors affecting the decision-making of the PDSs; other two aspects will be studied in the subsequent research. Twenty-two influencing factors of owner’s characteristics are summarized through a literature review, and 14 relatively important and high frequency factors with high frequency are chosen after discussion with specialists. Based on this...

Journal ArticleDOI
TL;DR: In this paper, a theoretical model of innovation in construction is developed on the basis of fifth-generation innovation research and 58 thought leaders from across the Australian and United Kingdom construction industries were interviewed.
Abstract: Despite what many researchers, governments, and commentators say, there is a considerable amount of innovation that occurs in the construction industry. Negative opinions of construction innovation are often misinformed by data and methodologies designed to measure innovation in other sectors and by a misunderstanding of the realities of innovation in the construction industry. A theoretical model of innovation in construction is developed on the basis of fifth-generation innovation research. Through interviews with 58 thought leaders from across the Australian and United Kingdom construction industries, this model is contrasted with what happens in practice to refine a model of innovation that can form the conceptual basis for future research. The findings support but also contrast many aspects of the mainstream innovation literature around fifth-generation innovation. In particular, ideas around systemizing innovation do not sit comfortably with the way that innovation happens in practice in the...