Aim at the deficiency - the tardiness of the algorithm , it provided a new method - improved simulated annealing algorithm to improve this algorithm and concrete method to realize this thought . then the new method was used to three classic mathematic functions 重點針對其搜索過程慢的缺點,提出了改進模擬退火算法的思路和具體實現(xiàn)方法,并通過三個經(jīng)典數(shù)學函數(shù)進行了檢驗。
It is difficult for us to find a mathematic function existed to explain the relation ship between the parameters of the load factor and the life spsan , we had to establish a mathematic model to explain the relation ship between the parameters of the load factor and the life span 此外,很難找到失效負載與被求參數(shù)的函數(shù)關系,解決這一問題的最佳辦法就是采用數(shù)學建模的思想,建立可靠性模型,通過對模型的求解,外推出真實情況下的失效參數(shù),計算可靠性指標。
Further , in light of the mathematic functions among price , efficiency and equity , the effects / impacts of water pricing methodologies on efficiency and equity in water resources reallocation have been analyzed , the results are that different pricing methods have distinguish impacts on efficiency for water resources uses while they have few impacts on equity for incomes due to reallocation of water resources . fourthly , because the regional water resources have some features of river basin , an integrated water resources management ( iwrm ) has been suggested for the efficient management of regional water resources , where the basic criteria and intensions of iwrm have been analyzed . in order to the iwrm for regional water resources , the enabling environments , the institutional roles and the management instruments will be needed 再根據(jù)交易中的水價與效率及公平性關系的數(shù)學模型,分析不同的水價制定方法對水資源再分配(水權交易)的效率與公平性影響,提出的不同的定價方法對水資源使用效率有顯著影響,而對公平性基本沒有影響;針對區(qū)域水資源具有流域特征的實際情況,提出了區(qū)域水資源綜合管理( iwrm )的模式,分析了iwrm的基本原則和包含的內容,進行了為實施iwrm的關鍵措施和體制安排,要實現(xiàn)區(qū)域水資源的綜合管理就必須具有寬松的環(huán)境、充分發(fā)揮管理機構的作用和靈活運用先進的管理手段;根據(jù)區(qū)域水資源的特點和可持續(xù)利用原則,進行了區(qū)域張仁田:區(qū)域水資源可持續(xù)利用研究水資源開發(fā)利用戰(zhàn)略方針的研究,按照制定的19項戰(zhàn)略方針,對一特定的區(qū)域進行了不同水用戶水資源需水量的中、長期預測,其中包括生態(tài)環(huán)境需水量,并采用iqqm模型進行供需平衡分析,提出在工程設施保證、技術措施和體制及法律保障到位的情況下,遠期能夠實現(xiàn)供需平衡。
Established the model of product quality - bom facing full - life cycle ? ? iqbom , designed the storage structure of iqbom and the data structure of its node - information . according to analyzing the character and the relation of product - bom as well as dbom and pbom , brought forward the arithmetic of iqbom integration and the mathematic functions and arithmetic of integration , distilling and backdating about product quality - information 建立了面向全壽命周期過程的產(chǎn)品集成質量bom的模型iqbom ,設計了iqbom的存儲結構和它的節(jié)點的數(shù)據(jù)結構;在分析了設計bom和工藝bom的特點之后,建立了iqbom集成方法中所涉及算法的數(shù)學模型,并進行了必要的推理和證明。