The second method , known as event - driven processing , is more efficient but also more complex to implement 第二種方法(稱為事件驅(qū)動(dòng)處理)效率較高,但實(shí)現(xiàn)起來也較為復(fù)雜。
In the case of event - driven processing , you need a signaling mechanism to control when a particular thread should run 在事件驅(qū)動(dòng)處理的情況下,需要一種發(fā)信機(jī)制來控制某一特定線程何時(shí)應(yīng)該運(yùn)行。
An event - driven process chain ( epc ) model for product development was discussed and a formal representation of epc presented 摘要研究了事件驅(qū)動(dòng)的過程鏈模型及其相關(guān)概念,給出了過程鏈模型的形式化表達(dá)。
Then the author analyses the current situation and development trend of workflow technology . and the author also researches the workflow management system and the workflow reference model of wfmc in - depth . in the following part , the article analyses the implementation mechanism of windchill wfms , and researches the process model - epc ( event - driven process chain ) model , organization model and resource model then the author further analyses the implementation of windchill wfms with ooa , introduces the implementation of workflow engine , activity and connector of workflow , robot 本文從企業(yè)信息化的發(fā)展現(xiàn)狀及趨勢(shì)出發(fā),分析了在制造業(yè)中積極引入pdm的必要性,并著重介紹了工作流管理系統(tǒng)( wfms )在pdm實(shí)施中的重要地位;對(duì)國內(nèi)外工作流技術(shù)的現(xiàn)狀及趨勢(shì)進(jìn)行了分析;然后對(duì)wfmc工作流管理系統(tǒng)及參考模型進(jìn)行了深入研究;在此基礎(chǔ)之上分析了windchill的工作流管理系統(tǒng)的實(shí)現(xiàn)機(jī)制,引入了epc過程模型,自行定義了組織模型及資源模型,并采用面向?qū)ο蟮姆治龇椒ㄟM(jìn)一步對(duì)windchill的wfms的實(shí)現(xiàn)進(jìn)行了深入闡述,介紹了工作流引擎、活動(dòng)、自動(dòng)機(jī)、連接符等對(duì)象的實(shí)現(xiàn)。
Then monte - carlo simulation , the thinking foundation of process simulation is introduced . finally , simulation strategies based on event - driven process simulation are researched . simulation strategy adopted in process simulation system is confirmed , according to the process and the process simulation ' s characteristic 結(jié)合實(shí)例討論了事件驅(qū)動(dòng)的過程仿真中描述過程結(jié)構(gòu)模型及過程仿真模型的基本概念和思想基礎(chǔ);重點(diǎn)討論了事件驅(qū)動(dòng)的過程仿真的仿真策略,針對(duì)過程、過程仿真的特點(diǎn),確定了過程管理集成支撐軟件中仿真系統(tǒng)所采用的仿真策略。