In recent years , weng cycle life model , logistic mode , grey model , two - way control model , random method etc . are often used to study oil and gas reserves and output 近年來國內(nèi)外對油氣儲量、產(chǎn)量及需求量常用的預測方法主要有翁氏生命旋回模型、邏輯斯諦logistic模型、灰色系統(tǒng)方法、 “儲?產(chǎn)量”雙向控制方法、隨機方法等。
The conclusion is that the back analysis results have the character of unbiasedness , efficiency and consistency . bayes random method which considers the prior errors is better in the back analysis of embankment dam ' s nonlinear materials 結(jié)論認為bayes隨機反演結(jié)果具有無偏性、有效性和一致性的特點;在土石壩等非線性材料反演分析中,考慮先驗信息誤差的bayes隨機反分析方法具有較好的適用性。
Abstract : a fuzzy and random method for estimating the three parameters ofweibull distribution was put forward . the method was tested and verified by the random samples obtained by monte carlo method . and the results showed that the estimating values of the parameters are close to the theoretical value 文摘:提出了威布爾分布三參數(shù)估計的模糊?隨機方法,并對蒙特卡羅方法產(chǎn)生的隨機樣本進行了驗證;結(jié)果表明,求得的參數(shù)估計值十分接近理論值。