The present utilization and existing problems in water resource of the north of huaihe river in anhui are introduced . based on such research objects as northern guo river of bozhou , jiangtang of fuyang and key city zones , a mathematical model with systems engineering viewpoint is established and used to investigate in water resource problems in the area . the main contents are as following : ( 1 ) groundwater resource and present utilization ; ( 2 ) mensuration of calculational parameters of groundwater and calculational methods ; ( 3 ) economic parameters of irrigation areas ; ( 4 ) establishing northern wo river forecast model with finite element method , areal well - group method and water balance method ; ( 5 ) establishing optimal water resource allocating model for northern jiangtang and new cihuaixin river irrigation area and investigating in the combination of surface water and groundwater , optimal agricultural planting - mode and optimal distribution proportion of various water sources ; ( 6 ) some existing exploitation problems and advices about water resource in the area 本論文針對(duì)淮北地區(qū)水資源開(kāi)發(fā)利用現(xiàn)狀及存在問(wèn)題,以安徽亳州渦河以北地區(qū)、阜陽(yáng)姜堂鄉(xiāng)和重點(diǎn)城市區(qū)為研究對(duì)象,運(yùn)用系統(tǒng)工程觀點(diǎn),采用數(shù)學(xué)模型方法,對(duì)該區(qū)水資源問(wèn)題進(jìn)行了綜合研究,主要內(nèi)容為: ( 1 )地下水資源及開(kāi)發(fā)利用現(xiàn)狀; ( 2 )地下水計(jì)算參數(shù)測(cè)定和計(jì)算方法; ( 3 )灌區(qū)經(jīng)濟(jì)參數(shù); ( 4 )采用有限單元法、面狀井系法、水均衡法,建立亳州渦河以北地下水位預(yù)測(cè)模型; ( 5 )建立阜陽(yáng)姜堂及茨淮新河北部的農(nóng)灌區(qū)水資源優(yōu)化配置模型,應(yīng)用系統(tǒng)分析的方法,研究地表水與地下水聯(lián)合運(yùn)用,農(nóng)業(yè)最優(yōu)種植模式及各種水源的最佳分配比例; ( 6 )淮北地區(qū)水資源開(kāi)發(fā)利用存在問(wèn)題及建議。
In the fifth chapter , we present the t - j model that is an important model in the system of strongly correlated electron and high temperature superconductivity at first . then , by using the ren ormalization group method , we investigate the t - j model and obtain the elementary excitation energy spectrum of it 在第五章中首先介紹了強(qiáng)關(guān)聯(lián)電子和高tc超導(dǎo)的理論的一個(gè)重要模型即t - j模型,然后采用重整化群流方程方法研究t - j模型,導(dǎo)出出t - j模型的流方程,再由流方程求解出t - j模型的元激發(fā)能譜。
Traditional grouping method could not use all attributes of entity and fuzzy correlation space based approach needed more match computation . fuzzy grouping method added two new techniques based on the fuzzy correlation space approach : fuzzy consistent relation based weight distribution and grid based preprocessing 由于傳統(tǒng)的分組方法不能充分利用實(shí)體所有的屬性,而基于模糊關(guān)聯(lián)空間的分組方法需要過(guò)多的運(yùn)算量,本文提出一種模糊分組方法,該分組方法在基于模糊關(guān)聯(lián)空間方法的基礎(chǔ)上加入基于模糊一致性的權(quán)值分配方法和基于格子的預(yù)處理分組方法。
Client - server setting , dr algorithm , grouping method and special transmission protocol etc . ) came into being to increase system ' s consistency and scalability . however , with the increase of system participant and task interaction , these technologies and methods could not meet dve system ' s request 為了使同一個(gè)虛擬環(huán)境中的用戶能夠共享相同的時(shí)間和空間,不同的技術(shù)和方法(如:客戶機(jī)?服務(wù)器設(shè)置, dr算法,分組方法和專用傳輸協(xié)議等)被用來(lái)提高系統(tǒng)的一致性和可擴(kuò)展性。