Discrete particle models can be classified into deterministic method and stochastic method in accounting for the particle collisions 在離散顆粒模型中,根據(jù)對(duì)顆粒間碰撞過程的處理方法的不同可分為確定性模型和隨機(jī)性模型。
The factor of this transformation is often stochastic ; it is difficult to reflect the factor of this stochastic transformation in using deterministic methods 這種變化的因素往往是隨機(jī)的,用確定性方法難于反映這種隨機(jī)性變化因素的影響。
Because of the drawbacks in the deterministic methods , the reliability analysis in the stability of slide has been greatly developed and is paid largely attention to 由于確定性方法的缺點(diǎn),滑坡穩(wěn)定的可靠度分析方法,得到了重視和發(fā)展。
Compared with commonly used deterministic methods , the stochastic hydrogeology method is a more rational resort for solving the flow and transport problems in the heterogeneous aquifers 摘要隨機(jī)水文地質(zhì)學(xué)方法,較傳統(tǒng)的確定性方法而言,是解決非均質(zhì)含水層中水流和溶質(zhì)運(yùn)移問題的一種更為合理的手段。
Secondly , in order to study the stochastic method , the deterministic methods for seepage inverse problem are studied in detail . in this chapter , the sensitivity problem of observation data and the disposal problem of measurement points are also studied 在討論確定性反演的同時(shí),本文還分析了觀測(cè)數(shù)據(jù)的敏感性問題和最優(yōu)測(cè)點(diǎn)布置問題,給出算例說明敏感性分析在滲透系數(shù)反演中的重要性。
To change the method of the railway track structures " design from deterministic method into reliability method not only is the development trend of the railway ' s technique , but also is the imperative demand of the present railway traffic 結(jié)構(gòu)可靠度設(shè)計(jì)是目前國內(nèi)外結(jié)構(gòu)設(shè)計(jì)的主要發(fā)展方向。實(shí)現(xiàn)軌道設(shè)計(jì)山定值設(shè)計(jì)向可靠度設(shè)計(jì)的轉(zhuǎn)變,不僅符合結(jié)構(gòu)設(shè)計(jì)和我國鐵路技術(shù)發(fā)展的大方向,同時(shí)也是當(dāng)前鐵路運(yùn)輸?shù)钠惹行枰?
In this part , another global optimization method , direct is also tested . it is a deterministic method , not as ga , therefore possessing relatively stronger robustness . though the precision of the optimum it finds usually is not high , it has fast convergence rate and is also an appropriate choice for many engineering problems 在此部分還測(cè)試了另外一種全局優(yōu)化方法direct ,該方法不同于遺傳算法,是一種確定性算法,有較強(qiáng)的健壯性,雖找到的最優(yōu)解的精度不高,但收斂比較快,對(duì)于一般的工程問題也是一種合適的選擇。
This paper discussed two problems in current seismic safety evaluation for engineering site , i . e . , the requirements of seismotectonic investigations and evaluation in near site area ( near region ) at the different seismic work levels ; and consistency between seismogenic structure and potential earthquake source with deterministic method and probabilistic method in engineering site seismic work at i - level 摘要本文討論了目前工程場(chǎng)地地震安全性評(píng)價(jià)工作中大家關(guān)心的兩個(gè)問題:不同級(jí)別地震工作的近場(chǎng)區(qū)(近區(qū)域)地震構(gòu)造調(diào)查和評(píng)價(jià)的不同要求以及級(jí)工作中確定論和概率論分析方法中發(fā)震構(gòu)造與潛在震源區(qū)的統(tǒng)一性。
Thus the non - deterministic methods such as the information theory , time - space series and complexity are used to analyze , pick up and integrate the geological , geochemical , geopgysical and remote sensing information . at the same time , synthesis mineral resource information analysis and predication system ( smr1aps ) has been written 因而本文結(jié)合高松礦田實(shí)際情況,對(duì)信息論、時(shí)空序列、復(fù)雜性等非確定性分析方法進(jìn)行了發(fā)展,并應(yīng)用于地質(zhì)、物探、化探、遙感信息的分析、提取和綜合中,最后編制了綜合礦產(chǎn)資源信息分析與預(yù)測(cè)系統(tǒng)。