The random position of aggregate was generated by monte carlo method . furthermore , the random aggregate model was established 采用蒙特卡羅方法,產(chǎn)生骨料顆粒在試件中的隨機(jī)位置,建立混凝土隨機(jī)骨料模型。
By means of the oriented object technique of vb on the window platform , a fortran program and matlab software can be called to generate and visualize the aggregate models 利用面向?qū)ο蟮膙b語言界面編程技術(shù),編寫了實(shí)現(xiàn)windows視窗環(huán)境的vb程序,并在該環(huán)境下調(diào)用生成骨料模型的fortran計(jì)算程序和matlab骨料模型圖形繪制程序。
The insurance company can also acquire various insurance products with stochastic interest by different combinations of parameters . establish a stochastic optimization model based on aggregate model of life insurance with stochastic interest 保險(xiǎn)公司通過參數(shù)的組合選擇,得到不同的隨機(jī)利率下的保險(xiǎn)產(chǎn)品;同時(shí),建立了隨機(jī)優(yōu)化模型。
The simulation result of performance of concrete was compared with that of the experiments . furthermore , the three - dimensional random aggregate model was established and the three - dimensional mesh of simple supported beam was generated automatically 混凝土的破壞,實(shí)際上是由于其內(nèi)部的微裂縫的萌生、擴(kuò)展、相互匯合,進(jìn)而形成宏觀裂縫貫穿混凝土而導(dǎo)致其失穩(wěn)破壞的過程。
3 aggregate model of life insurance with stochastic interest construct an aggregate model of life insurance with stochastic interest aiming at both the randomness of interest in practice and the importance of stochastic interest in life insurance 3隨機(jī)利率下的綜合人壽保險(xiǎn)模型傳統(tǒng)的精算理論中,都是假定利率是確定的,然而實(shí)際上利率具有隨機(jī)性。壽險(xiǎn)中的利率隨機(jī)性是風(fēng)險(xiǎn)產(chǎn)生的重要因素。
The details as followed : 1 . summarize and analyze the methods of meso - mechanics of concrete and researching documents on the theory of damage of concrete ; 2 . based on the packing approach of spherical aggregates , a method generating polygon aggregate model of concrete was presented , by which the codes of aggregate packing and meso - meshes of finite element plotting were designed taking into account the actual aggregate content , grading , and aggregate configuration 具體工作由以下幾個(gè)方面: 1 .分析總結(jié)了混凝土細(xì)觀力學(xué)分析方法和現(xiàn)有混凝土材料損傷破壞理論的研究成果; 2 .在研究圓形骨料投放方法的基礎(chǔ)上,提出了一種多邊形隨機(jī)骨料投放方法,并編制了凸多邊形模型生成程序和細(xì)觀有限元剖分程序。這種生成方法所得到的凸多邊形骨料模型既反映了骨料的實(shí)際形態(tài)又維持骨料的實(shí)際級(jí)配和含量。
In chapter 5 , according to the characteristic in the stage of concept evaluation of product design , the quality attribute preference aggregate model which support multi - attribute and group decision is set forth . according to the model , preference aggregation method based on evidential reasoning and rough set theory and rational evaluation method of multi - attribute and multi - evaluator are put forward . consider the wave of evaluator ' s preference caused by uncertainty , robust of quality attribute and concept in the stage of concept evaluation are put forward for the first time 第五章根據(jù)產(chǎn)品設(shè)計(jì)方案評(píng)價(jià)的特點(diǎn),提出了支持多屬性群組評(píng)價(jià)的質(zhì)量屬性偏好聚合模型,并提出了基于證據(jù)推理與粗集理論的質(zhì)量屬性偏好聚合方法和理性化的偏好聚合方法;針對(duì)由不確定性引起的評(píng)價(jià)者偏好的波動(dòng),首次在方案設(shè)計(jì)階段根據(jù)偏好波動(dòng)提出了質(zhì)量屬性和方案魯棒性的概念,給出了質(zhì)量屬性魯棒性的數(shù)學(xué)描述和方案魯棒性的計(jì)算方法;并且進(jìn)行了實(shí)例應(yīng)用。
4 the optimal insurance based on game theory study the above aggregate model of life insurance by applying the game theories . the insurance process is characterized by the game of two - person zero - sum for the first time : the existence of the optimal value of premium in the model and how to obtain the optimal value are analyzed in detail based on the game theories 4基于對(duì)策理論的最優(yōu)保險(xiǎn)將對(duì)策理論應(yīng)用于保險(xiǎn)實(shí)踐中,投保過程可以由二人零和對(duì)策來描述,應(yīng)用二人零和對(duì)策理論討論模型中保險(xiǎn)費(fèi)的最優(yōu)值存在性及如何得到保險(xiǎn)費(fèi)的最優(yōu)解。
2 the aggregate model of life insurance establish an aggregate model of life insurance by applying the alien modernly insurance actuarial theories and techniques , including deferred life annuities , whole life insurance and returnable premiums . the model has the following properties : ( a ) through the regulation of various parameters in the model , various insurance products can be obtained ; ( b ) the introduction of whole life annuities in the model eases economic predicament when the insured retire ; ( c ) a returnable premium part in the model makes the insurance products have double functions of insurance and savings ; ( d ) an endowment insurance actuarial model also can be gotten when annuity is continuous . and construct an optimization model based on aggregate model of life insurance 這個(gè)保險(xiǎn)精算模型具有如下性質(zhì): ( a )保險(xiǎn)公司可以根據(jù)實(shí)際情況調(diào)整參數(shù),不同參數(shù)的組合可以得到不同的保險(xiǎn)產(chǎn)品,靈活適用性較強(qiáng); ( b )年金的引入,可以緩解投保人退休后的經(jīng)濟(jì)窘境,避免或減小因退休而面臨的經(jīng)濟(jì)影響,保險(xiǎn)的社會(huì)保障性得到了很好的體現(xiàn); ( c )模型中的還本部分,使得這種保險(xiǎn)產(chǎn)品具有儲(chǔ)蓄和保險(xiǎn)的雙重功能,不僅擴(kuò)大了保險(xiǎn)的社會(huì)職能,而且對(duì)于投保人來說,多了一種安全的投資選擇; ( d )年金連續(xù)的情況下,建立了具有儲(chǔ)蓄功能的養(yǎng)老保險(xiǎn)精算模型。
A good model of the full - grade aggregate concrete with high aggregate content is precondition to successfully execute concrete meso - mechanical simulation , so that the main work in the dissertation is focused on the following study concerning the random aggregate model of dam fully - graded concrete : ( 1 ) based on the topology of spherical aggregates , an algorithm of the random convex polyhedron aggregate model was presented considering the actual aggregate content , grading , and aggregate shape , and corresponding fortran program was developed to generate random convex polyhedron aggregate 針對(duì)全級(jí)配大壩混凝土的實(shí)際骨料含量和骨料形態(tài),本文做了以下主要工作: ( 1 )在一種高效率生成的隨機(jī)球骨料模型的基礎(chǔ)上,形成隨機(jī)凸多面體骨料模型,同時(shí)研究了細(xì)觀單元屬性判別方法,編制了對(duì)含有凸多面體骨料的細(xì)觀區(qū)域進(jìn)行結(jié)構(gòu)性有限元網(wǎng)格剖分程序。本文給出的三維隨機(jī)骨料模型算法不但考慮了混凝土的骨料的實(shí)際級(jí)配和含量,而且計(jì)及了骨料的實(shí)際形態(tài)。