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An Optimized Constraint Decomposition Method in Concurrent Engineering
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作者 常天庆 Xu Wensheng +1 位作者 Xiong Guangleng Xing Siming 《High Technology Letters》 EI CAS 2003年第2期72-77,共6页
In order to facilitate solution, a complex problem is normally decomposed into many small sub-problems during product development process. Teams are formed to resolve each sub-problem. The original problem is resolved... In order to facilitate solution, a complex problem is normally decomposed into many small sub-problems during product development process. Teams are formed to resolve each sub-problem. The original problem is resolved from solutions of sub-problems. Ideally, sub-problems are not only mutually independent but also inherent parameters of original problem. Solution of original problem can be directly derived from the collection of solutions from simplified sub-problems. In practice, the degree of interdependency is indeed reduced, sub-problems are neither totally independent nor all inherent parameters of original problem. This paper discusses team coordination under this condition and design solution from each team, which not only satisfies total requirements but also is an optimal one. The suggested optimized constraint decomposition method will insure workable Pareto solution. 展开更多
关键词 constraint Satisfaction Problems constraint decomposition Concurrent Engineering constraint management
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Innovate Triple Constraints Model for Better Construction Project Results
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作者 Nouri Fouad Nouri Robert Marshal 《Journal of Civil Engineering and Architecture》 2013年第3期341-349,共9页
The continuous changing impacts appeared in all solution understanding approaches in the projects management field (especially in the construction field of work) by adopting dynamic solution paths. The paper will de... The continuous changing impacts appeared in all solution understanding approaches in the projects management field (especially in the construction field of work) by adopting dynamic solution paths. The paper will define what argue to be a better relational model for project management constraints (time, cost and scope). This new model will increase the success factors of any complex program/project. This is a qualitative research adopting a new avenue of investigation by following different approach of attributing project activities with social phenomena, and supporting phenomenon with field of observations rather than mathematical method by emerging solution from human, and ants' colonies successful practices. The results will show the correct approach of relation between the triple constraints considering the relation as multi agents system having specified communication channels based on agents locations. Information will be transferred between agents, and action would be taken based on constraint agents locations in the project structure allowing immediate changes abilities in order to overcome issues of over budget, behind schedule and additional scope impact. This is complex adaptive system having self organized technique, and cybernetic control. Resulted model can be used for improving existing project management methodologies. 展开更多
关键词 Ants complex system multi agent system project management triple constraints
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