Because the pseudo random numbers are periodic and predictable , in the field of encryption , we must choose the unpredictable , truly random numbers to guarantee the security of the information 由于偽隨機(jī)數(shù)是有規(guī)律可循的;因此在加密領(lǐng)域,就必須應(yīng)用不可預(yù)測的真隨機(jī)數(shù)來保證信息安全。
In this paper , we use computer to generate pseudo random number and low - discrepancy sequences . on this foundation , monte carlo integration and quasi - monte carlo integration are researched 摘要在本文中,我們利用計(jì)算機(jī)分別產(chǎn)生了偽隨機(jī)數(shù)序列和低差異數(shù)序列。在此基礎(chǔ)上,我們研究了蒙特卡羅積分與擬蒙特卡羅積分。
In this paper , a sheet metal assembly is as to the study object . msc / patran is used to modeling , calculating , and analyzing . the assembly variation is calculated using finite element method and pseudo random numbers which are produced by number theoretic method 本文以金屬薄板為研究對象,利用有限元軟件msc / patran對其進(jìn)行建模、計(jì)算與分析,利用數(shù)論方法產(chǎn)生的偽隨機(jī)點(diǎn)與有限元法相結(jié)合計(jì)算薄壁件的裝配公差。
Based on the randomicity of the alignment errors , the method called " pseudo random number " is presented to simulate pseudo alignment errors . the theory of producing pseudo random number has been studied systematically . the method above - developed can be used to simulate pseudo alignment errors , and an example illustrates the method 分析了安裝誤差對結(jié)構(gòu)/機(jī)構(gòu)的影響,針對安裝誤差隨機(jī)性的特點(diǎn)提出了用偽隨機(jī)數(shù)生成的方法來模擬產(chǎn)生“偽安裝誤差”的思想;全面系統(tǒng)地研究了偽隨機(jī)數(shù)的產(chǎn)生理論和方法,同時(shí)闡述了安裝誤差的統(tǒng)計(jì)原理;開發(fā)了一個(gè)能夠用于模擬產(chǎn)生偽安裝誤差的應(yīng)用軟件,并給出了安裝誤差模擬的算例。