本文分析了现阶段主流PDM(Product Data Management)系统的管理方式与特点,通过对PDM系统架构设计、数据组织、数据一致性管理等方面的研究,提出了一种基于Web Service技术的异构PDM系统集成技术.设计并开发了基于Web Service技术的异构...本文分析了现阶段主流PDM(Product Data Management)系统的管理方式与特点,通过对PDM系统架构设计、数据组织、数据一致性管理等方面的研究,提出了一种基于Web Service技术的异构PDM系统集成技术.设计并开发了基于Web Service技术的异构PDM系统接口程序,实现了异构PDM系统产品数据集成交互,支撑了型号项目研制.展开更多
Generally,one of the most difficult works at scheduling is to estimate the duration of activities and linkages between them because the possibility that the duration and linkages could be exposed to the uncertainties ...Generally,one of the most difficult works at scheduling is to estimate the duration of activities and linkages between them because the possibility that the duration and linkages could be exposed to the uncertainties is very high.When estimating project duration,therefore,the probabilistic estimation of the duration as well as the probabilistic estimation of the linkages between activities should be considered concurrently.The Project Evaluation and Review Technique(PERT)that is considered to be one of the most popular techniques applied for the probabilistic estimation of a project duration cannot consider the uncertainties of the linkages because it only estimates the probabilistic duration limited to“FS0”relationship.The purpose of this study is to propose the new method,the Probabilistic Linkage Evaluation Technique(PLET),for probabilistically estimating the project duration based on the probabilistic estimation of the BDM’s relationships,and also provide more wide and various probabilistic information about the project duration.展开更多
文摘本文分析了现阶段主流PDM(Product Data Management)系统的管理方式与特点,通过对PDM系统架构设计、数据组织、数据一致性管理等方面的研究,提出了一种基于Web Service技术的异构PDM系统集成技术.设计并开发了基于Web Service技术的异构PDM系统接口程序,实现了异构PDM系统产品数据集成交互,支撑了型号项目研制.
文摘Generally,one of the most difficult works at scheduling is to estimate the duration of activities and linkages between them because the possibility that the duration and linkages could be exposed to the uncertainties is very high.When estimating project duration,therefore,the probabilistic estimation of the duration as well as the probabilistic estimation of the linkages between activities should be considered concurrently.The Project Evaluation and Review Technique(PERT)that is considered to be one of the most popular techniques applied for the probabilistic estimation of a project duration cannot consider the uncertainties of the linkages because it only estimates the probabilistic duration limited to“FS0”relationship.The purpose of this study is to propose the new method,the Probabilistic Linkage Evaluation Technique(PLET),for probabilistically estimating the project duration based on the probabilistic estimation of the BDM’s relationships,and also provide more wide and various probabilistic information about the project duration.