The construction projects’ dynamic and interconnected nature requires a comprehensive understanding of complexity during pre-construction. Traditional tools such as Gantt charts, CPM, and PERT often overlook uncertai...The construction projects’ dynamic and interconnected nature requires a comprehensive understanding of complexity during pre-construction. Traditional tools such as Gantt charts, CPM, and PERT often overlook uncertainties. This study identifies 20 complexity factors through expert interviews and literature, categorising them into six groups. The Analytical Hierarchy Process evaluated the significance of different factors, establishing their corresponding weights to enhance adaptive project scheduling. A system dynamics (SD) model is developed and tested to evaluate the dynamic behaviour of identified complexity factors. The model simulates the impact of complexity on total project duration (TPD), revealing significant deviations from initial deterministic estimates. Data collection and analysis for reliability tests, including normality and Cronbach alpha, to validate the model’s components and expert feedback. Sensitivity analysis confirmed a positive relationship between complexity and project duration, with higher complexity levels resulting in increased TPD. This relationship highlights the inadequacy of static planning approaches and underscores the importance of addressing complexity dynamically. The study provides a framework for enhancing planning systems through system dynamics and recommends expanding the model to ensure broader applicability in diverse construction projects.展开更多
Taking Scientific Outlook on Development as the guiding principle,this paper introduced the principles of innovation,coordination,green,openness and sharing. Based on gifted advantages of selenium-enriched soil and se...Taking Scientific Outlook on Development as the guiding principle,this paper introduced the principles of innovation,coordination,green,openness and sharing. Based on gifted advantages of selenium-enriched soil and selenium-enriched industry development in Guangxi,it discussed current practice,stressed green,ecological,characteristic demonstration,transformation and upgrading,and targeted poverty alleviation. Finally,it came up with perspective,practical,and operational strategies and recommendations for development of selenium-enriched industry,to provide reference for sustainable development of selenium-enriched functional industry in Guangxi.展开更多
The author discusses the application of System Dynamics to high-level strategic simulation in construction. In particular, System Dynamics' strength on representing feedback processes, aggregation, soft variables,...The author discusses the application of System Dynamics to high-level strategic simulation in construction. In particular, System Dynamics' strength on representing feedback processes, aggregation, soft variables,and continuous simulation clock for high-level simulation are discussed using real modeling examples. From this exercise, it is concluded that System Dynamics offers a great potential for strategic simulation in construction.Further, the author proposes a comprehensive simulation framework that integrates System Dynamics and Discrete Event Simulation for a strategic decision making process in construction where operational details should be taken into account.展开更多
Modern international project management has entered the phase of precise and accurate project management after the global financial crisis broke out at the beginning of the 21 stcentury. However, its development has f...Modern international project management has entered the phase of precise and accurate project management after the global financial crisis broke out at the beginning of the 21 stcentury. However, its development has faced new challenges since there has been lack of explicitly unanimous definition for the capability dimensions of precise and accurate project management, as well as the models and their process control parameters. The required core capabilities based on the precise and accurate project management for various rings are involved in the project life cycle, namely, the required internationally core competences and their components for the phases of project strategic planning and decision making in the early project phase, as well as the value engineering, and the project supervision and controls during the execution phase.Through studying the effects of the internationally core competences based on precise and accurate project management capabilities for the success and excellence of projects and configuring such models, the goal is to help the main contractors continuously obtain project success and excellence, thus improve its internationally core competences with continuous project success and excellence.展开更多
文摘The construction projects’ dynamic and interconnected nature requires a comprehensive understanding of complexity during pre-construction. Traditional tools such as Gantt charts, CPM, and PERT often overlook uncertainties. This study identifies 20 complexity factors through expert interviews and literature, categorising them into six groups. The Analytical Hierarchy Process evaluated the significance of different factors, establishing their corresponding weights to enhance adaptive project scheduling. A system dynamics (SD) model is developed and tested to evaluate the dynamic behaviour of identified complexity factors. The model simulates the impact of complexity on total project duration (TPD), revealing significant deviations from initial deterministic estimates. Data collection and analysis for reliability tests, including normality and Cronbach alpha, to validate the model’s components and expert feedback. Sensitivity analysis confirmed a positive relationship between complexity and project duration, with higher complexity levels resulting in increased TPD. This relationship highlights the inadequacy of static planning approaches and underscores the importance of addressing complexity dynamically. The study provides a framework for enhancing planning systems through system dynamics and recommends expanding the model to ensure broader applicability in diverse construction projects.
基金Supported by Key Science and Technology Project for Innovation-driven Development of Guangxi"High Efficient and Safe Use of Selenium-enriched Soil Resources"(2017AA19015)Scientific Research and Technological Development Program Project of Guangxi Province(Gui Ke He 415104001-22)+2 种基金Key Research and Development Program of Guangxi(Gui Ke AB16380088 and Gui Ke AB16380164)Scientific Research and Technological Development Program Project of Nanning City(20152054-13)Scientific Research and Technological Development Program of Xixiangtang District of Nanning City(2015312)
文摘Taking Scientific Outlook on Development as the guiding principle,this paper introduced the principles of innovation,coordination,green,openness and sharing. Based on gifted advantages of selenium-enriched soil and selenium-enriched industry development in Guangxi,it discussed current practice,stressed green,ecological,characteristic demonstration,transformation and upgrading,and targeted poverty alleviation. Finally,it came up with perspective,practical,and operational strategies and recommendations for development of selenium-enriched industry,to provide reference for sustainable development of selenium-enriched functional industry in Guangxi.
文摘The author discusses the application of System Dynamics to high-level strategic simulation in construction. In particular, System Dynamics' strength on representing feedback processes, aggregation, soft variables,and continuous simulation clock for high-level simulation are discussed using real modeling examples. From this exercise, it is concluded that System Dynamics offers a great potential for strategic simulation in construction.Further, the author proposes a comprehensive simulation framework that integrates System Dynamics and Discrete Event Simulation for a strategic decision making process in construction where operational details should be taken into account.
文摘Modern international project management has entered the phase of precise and accurate project management after the global financial crisis broke out at the beginning of the 21 stcentury. However, its development has faced new challenges since there has been lack of explicitly unanimous definition for the capability dimensions of precise and accurate project management, as well as the models and their process control parameters. The required core capabilities based on the precise and accurate project management for various rings are involved in the project life cycle, namely, the required internationally core competences and their components for the phases of project strategic planning and decision making in the early project phase, as well as the value engineering, and the project supervision and controls during the execution phase.Through studying the effects of the internationally core competences based on precise and accurate project management capabilities for the success and excellence of projects and configuring such models, the goal is to help the main contractors continuously obtain project success and excellence, thus improve its internationally core competences with continuous project success and excellence.
