A new approach to prove the expectancy formula on the sum of stochastic variables 隨機(jī)多個隨機(jī)變量之和的期望公式的一種新證法
Computer simulation is known as an efficient method for dealing with stochastic variables in the inventory system 仿真被認(rèn)為是處理復(fù)雜庫存系統(tǒng)中隨機(jī)變量的有效方法。
Firstly , the article introduces the theory of system simulation and the stochastic numeral and the stochastic variable 本文首先介紹了系統(tǒng)模擬理論,以及產(chǎn)生隨機(jī)數(shù)從而生成需要的隨機(jī)變量的方法。
By contrast , the paper calculated the reliability index of the abutment after changing variable quotiety of the stochastic variable 作為對比,本文還在改變各隨機(jī)變量變異系數(shù)的前提下,計算了壩肩巖體各高程的可靠指標(biāo)。
The theory of reliability is based on the probability . it considers the variability of all stochastic variable and use taut probability to measure 可靠度理論是建立在概率論基礎(chǔ)上,考慮了影響滑坡體穩(wěn)定的各項(xiàng)隨機(jī)變量的變異性,并用嚴(yán)格的概率來度量。
The waste load is regarded as a stochastic variable following the log - normal probability distribution based on statistical data , and the constrains on water quality levels are expressed in a probability form 假設(shè)排污量是服從對數(shù)正態(tài)分布的隨機(jī)變量,并且以潮周期內(nèi)水質(zhì)達(dá)標(biāo)的概率作為衡量控制點(diǎn)達(dá)標(biāo)的依據(jù)。
But as the ship structure system is very big and complicated , and there are many stochastic variables , not much progress have been made in application the structural reliability base on sfem to the ship structure 但由于船舶結(jié)構(gòu)體系龐大,隨機(jī)變量眾多,基于隨機(jī)有限元的可靠度分析在船舶結(jié)構(gòu)中應(yīng)用緩慢。
Under the consideration of the uncertainty of the water environmental system , both the observed data of the river water quality and the parameters for the river water quality model are processed as the stochastic variables herein 摘要考慮到水環(huán)境系統(tǒng)的不確定性,把河流水質(zhì)觀測數(shù)據(jù)和水質(zhì)模型參數(shù)都作為隨機(jī)變量來處理。
This paper is mainly concerned with the dynamic reliability of massive - head dam under earthquake . during the analyses , it considers the effect of variability 、 relevance and truncate of the stochastic variable 本文主要研究在地震作用下大頭壩的動力可靠性,在計算中還考慮了隨機(jī)變量的變異,相關(guān),截尾對其可靠度的影響。