应力为复合x~2-更新过程时结构可靠度的一致估计

本文讨论强度为随机变量X,应力为复合x2-更新过程Y（t）的半随机过程可靠性模型的结构可靠度一致估计问题．获得在设计基准期[0,T]内结构可靠度表达式和结构可靠度的一致估计．     

正态—复合Weibull过程模型结构可靠性当量正态设计

本文讨论强度R～N(μR,σ_R~2),应力为{S(t),t∈[0,T]}为复合Weibull过程模型结构可靠性当量正态设计,获得应力在设计基准期[0,T]内的最大值概率分布及统计参数估计,正态—复合Weibull过程模型结构可靠度和结构可靠性当量正态设计表达式。     

应力为复合χ^2—更新过程时结构可靠度的一致估计

本文讨论强度为随机变量Ｘ,应力为复合χ＾２－更新过程Ｙ（ｔ）的半随机过程可靠性模型的结构可靠度一致估计问题。获得在设计基准期［０,Ｔ］内结构可靠度表达式和结构可靠度的一致估计。     

应力S(t)为复合χ^2更新过程时结构可靠度渐近正态估计

该文讨论强度为随机变量X,应力为复合χ２ 更新过程｛Y（t）,t∈ ［０,T］｝时结构可靠度的渐近正态性问题．获得在设计基准期［０,T］内结构可靠度表达式和结构可靠度渐近正态估计．     

利用Weibull分布对飞机某部件的金属材料的疲劳寿命的可靠性估计

本文在Weibull分布下对飞机的某关键部件的金属材料的疲劳寿命进行可靠性估计。并给出了部分可靠度和可靠寿命的估计结果．     

应力S(t)为复合x~2-更新过程时结构可靠度渐近正态估计

该文讨论强度为随机变量Ｘ　应力为复合ｘ２－更新过程｛Ｙ（ｔ）,ｔ ∈［０,Ｔ］｝时结构可靠度的 渐近正态性问题．获得在设计基准期［０,Ｔ］ 内结构可靠度表达式和结构可靠度渐近正态估计．     

正态—平稳二项过程模型结构可靠度的最小方差无偏估计

本文讨论强度随机变量Ｘ服从正态分布,应力｛Ｙ（ｔ）,ｔ∈［０,Ｔ］｝为平稳二项随机过程模型结构可靠度的最小方差无偏估计．     

由 Weibull 子系统数据综合的系统可靠度的置信下界限

§1.前言以往对系统可靠度的置信区间估计方法,主要是利用各个子系统的寿命试验的数据,通过系统的可靠性结构模型,进行可靠性综合的方法来得到系统可靠度的置信区间估计.关于这方面的若干情况可参阅文章[1]的概况介绍.从所查阅到的文献来看,主要是各子系统的寿命试验数据为成败型的或是指数分布类型的情况,至于各子系统的寿命分布是Weibull 分布的情况的文章较少,主要原因是,问题解决的困难和计算上产生的困难等,甚至于无法计算,不得不采用 Monte-Carlo 方法.本文中所讨论的问题,是 Weibull 子系统的情况,其方法的计算困难程度可以得到改善.     

缺失数据下WEIBULL分布的统计推断

本文给出了定数截尾缺失数据下Weibull分布参数的点估计和区间估计以及可靠度、失效率的置信限。     

通用系统模糊可靠度计算模型

对系统组成单元的含义作了新的定义,建立了单元模糊可靠度及其置信区间的估计模型;建立了常见通用系统的模糊可靠度估计模型;通过对单元模糊可靠度的直接估计,利用所建立的估计模型可以快速方便地预测出系统的模糊可靠度.实例分析给出了估计模型的使用方法,并显示了模型的有效性.     

Instructions for Authors

<正>Submission Authors must use LaTeX for typewriting,and visit our website www.actamath.com to submit your paper.Our address is Editorial Office of Acta Mathematica Sinica,Academy of Mathematics and Systems Science,Chinese Academy of Sciences,Beijing 100190,P.R.China.     

THE 8~(th) INTERNATIONAL CONGRESS ON INDUSTRIAL AND APPLIED MATHEMATICS

正August 10-14,2015Beijin,China The International Congress on Industrial and Applied Mathematics(ICIAM)is the premier international congress in the field of applied mathematics held every four years under the auspices of the International Council for Industrial and Applied Mathematics.From August 10 to 14,2015,mathematicians,scientists     

FRACTIONAL INTEGRALS OF THE WEIERSTRASS FUNCTIONS： THE EXACT BOX DIMENSION

The present paper investigates the fractal structure of fractional integrals of Weierstrass functions. The ezact box dimension for such functions many important cases is established. We need to point out that, although the result itself achieved in the present paper is interesting, the new technique and method should be emphasized. These novel ideas might be useful to establish the box dimension or Hausdorff dimension (especially for the lower bounds) for more general groups of functions.     

English Series

正1 Aims and Scope Acta Mathematicae Applicatae Sinica(English Series)is a quarterly journal established by the Chinese Mathematical Society.The journal publishes high quality research papers from all branches of applied mathematics,particularly welcomes those from partial differential equations,computational mathematics,applied probability,mathematical finance,statistics,dynamical systems,optimization and management science.     

CHINESE ANNALS OF MATHEMATICS SERIES B Volume 35 · 2014 TOTAL CONTENTS

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Congruences,ideals and annihilators in standard QBCC-algebras

We characterize congruence lattices of standard QBCC-algebras and their connection with the congruence lattices of congruence kernels. Work on the paper was supported by Council of Czech Government No J14/98:153100011.     

A decomposition of continuity via ideals

A new class of sets in ideal topological spaces is introduced and using these sets, a decomposition of continuity is given.      

When a compact (countably compact) set is closed. II

We obtain (a) necessary and sufficient conditions and (b) sufficient conditions for a compact (countably compact) set to be closed in products (sequential products) and subspaces (sequential subspaces) of normal spaces. As a consequence of these, sufficient conditions are obtained for (i) the closedness of arbitrary (countable) union of closed sets and (ii) the equality of the union of the closures and the closure of the union of arbitrary (countable) families of sets in these spaces. It is also shown that these results do not hold for quotients of even T ₄,-spaces.     

ASYMPTOTIC BEHAVIOR OF ECKHOFF＇S METHOD FOR FOURIER SERIES CONVERGENCE ACCELERATION

The current paper considers the problem of recovering a function using a limited number of its Fourier coefficients. Specifically, a method based on Bernoulli-like polynomials suggested and developed by Krylov, Lanczos, Gottlieb and Eckhoff is examined. Asymptotic behavior of approximate calculation of the so-called ＂jumps＂ is studied and asymptotic L2 constants of the rate of convergence of the method are computed.