Implementation of simultaneous execution phases in the concurrent engineering (CE) needs careful planning when the downstream phase could be activated as the upstream phase developed to a certain point. The determinat...Implementation of simultaneous execution phases in the concurrent engineering (CE) needs careful planning when the downstream phase could be activated as the upstream phase developed to a certain point. The determination of startup time of overlapping jobs in CE has long been a disturbance in manufacturing industry implementing CE programs. A novel model based on both fuzzy logic and neural network is proposed to mathematically formulate the inter-connective information between the two coupled phases in CE projects, and to determine the startup time of downstream phases in real time. The information transferring between the two coupled phases is quantified by using the negative Shannon entropy. Based on this algorithm, a PDM-based framework is proposed to narrow the gap between pro-duct design and manufacture, in which five modules are built to monitor, reshuffle and implement the simultaneous executing processes. Finally, an example is given to illustrate applications of the algorithm in the real world.展开更多
目的采用数据挖掘方法探索肾综合征出血热(HFRS)的中药复方用药规律。方法检索中国知识资源总库(CNKI)、中国学术期刊数据库(万方数据)、中文科技期刊数据库(维普网)、中国生物医学文献数据库(CBM)、PubMed、Web of Science和Wiley Onli...目的采用数据挖掘方法探索肾综合征出血热(HFRS)的中药复方用药规律。方法检索中国知识资源总库(CNKI)、中国学术期刊数据库(万方数据)、中文科技期刊数据库(维普网)、中国生物医学文献数据库(CBM)、PubMed、Web of Science和Wiley Online Library收录的1989年1月1日-2019年6月1日中医治疗HFRS的临床研究文献,人工阅读文献后收集中药复方,经过数据规范化处理后建立中药复方数据库,然后运用BK算法和复杂系统熵网络方法挖掘其用药规律。结果共筛选出文献469篇,涉及中药复方216首。筛选出气营两燔证24个高频药物、15个核心药对和5个基本方,瘀热互结、阴伤津亏证22个高频药物、19个核心药对和3个基本方,肾气不固证16个高频药物、8个核心药对和1个基本方,气阴两伤证17个高频药物和4个核心药对。结论HFRS发热期治以清气解毒、凉营活血,用药以清营汤为主,佐以疏散风热、活血止血等药物;少尿期治以泄热通腑,凉血逐瘀,兼顾养阴,用药参照犀角地黄汤、桃核承气汤、调胃承气汤等,重视清热凉血药、泻下药和利水渗湿药的配伍;多尿后期肾气不固者治以补肾培元、固摄保津,用药以补益药、收涩药为主;恢复期治以益气养阴、扶助正气,用药以益气养阴药为主,佐以理气、化湿药。展开更多
文摘Implementation of simultaneous execution phases in the concurrent engineering (CE) needs careful planning when the downstream phase could be activated as the upstream phase developed to a certain point. The determination of startup time of overlapping jobs in CE has long been a disturbance in manufacturing industry implementing CE programs. A novel model based on both fuzzy logic and neural network is proposed to mathematically formulate the inter-connective information between the two coupled phases in CE projects, and to determine the startup time of downstream phases in real time. The information transferring between the two coupled phases is quantified by using the negative Shannon entropy. Based on this algorithm, a PDM-based framework is proposed to narrow the gap between pro-duct design and manufacture, in which five modules are built to monitor, reshuffle and implement the simultaneous executing processes. Finally, an example is given to illustrate applications of the algorithm in the real world.
文摘目的采用数据挖掘方法探索肾综合征出血热(HFRS)的中药复方用药规律。方法检索中国知识资源总库(CNKI)、中国学术期刊数据库(万方数据)、中文科技期刊数据库(维普网)、中国生物医学文献数据库(CBM)、PubMed、Web of Science和Wiley Online Library收录的1989年1月1日-2019年6月1日中医治疗HFRS的临床研究文献,人工阅读文献后收集中药复方,经过数据规范化处理后建立中药复方数据库,然后运用BK算法和复杂系统熵网络方法挖掘其用药规律。结果共筛选出文献469篇,涉及中药复方216首。筛选出气营两燔证24个高频药物、15个核心药对和5个基本方,瘀热互结、阴伤津亏证22个高频药物、19个核心药对和3个基本方,肾气不固证16个高频药物、8个核心药对和1个基本方,气阴两伤证17个高频药物和4个核心药对。结论HFRS发热期治以清气解毒、凉营活血,用药以清营汤为主,佐以疏散风热、活血止血等药物;少尿期治以泄热通腑,凉血逐瘀,兼顾养阴,用药参照犀角地黄汤、桃核承气汤、调胃承气汤等,重视清热凉血药、泻下药和利水渗湿药的配伍;多尿后期肾气不固者治以补肾培元、固摄保津,用药以补益药、收涩药为主;恢复期治以益气养阴、扶助正气,用药以益气养阴药为主,佐以理气、化湿药。
