普遍型模糊随机规划

本文提出了一种求解多目标模糊随机规划问题的普遍方法。这种方法在同一个理论框架内处理约束与目标中的随机性和模糊性,因此它具有相当的普遍性。确定性规划,模糊规划和随机规划都可看成是它的特例。     

一种解带补偿的随机规划的逼近方法

其中f(x)∈C~1且f(x)为凸函数,A∈IR~(m×n),x∈IR~n,b∈IR~m.(1)的一般形式可用可行方向法(Topkis-Veinott情形)得到一个Fritz-John点.但当f(x)或△f(x)太复杂以致难以计算时,此方法就不适当.为此考虑逼近问题:     

地区中长期发展规划模型研究

针对一个地区研究制定中长期发展规划的需要，建立了一模型系列，利用它们可对该地区未来１５年国民经济和社会发展进行动态的系统分析。     

几何规划的序列线性方程组解法

1 引 言 众所周知,几何规划是非线性规划中的一类特殊规划。数学规划的前辈,早已预料:若对几何规划能探索出有效可行的算法,必将把非线性规划,特别是分式规划的算法推向新的台阶,即任何非线性规划问题,在一定的条件下,都可用一串几何规划去逼近,正因为如此,近几年,我们对几何规划的理论和算法,再一次产生了浓厚的兴趣,获得了一些新的结果,写此文目的,是想引起更多的规划专家的注意和重视,把冷落了近二十年的几何规划,推向新的台阶,为非线性规划的求解开辟新的途径。 几何规划的一般形式为     

模拟退火算法的改进及其应用

模拟退火算法是随机优化近似算法。本文首先介绍其物理背景和一般形式，然后通过对算法增加记忆和返回两个功能以及在算法之后链接一个局部搜索过程，改善了算法性能，接着将改进算法应用于解旅游商问题，最后对该算法作简要的性能评论。     

背包问题的两阶段动态规划算法

本文通过理论分析给出了背包问题的两阶段动态规划算法，用例题说明了其求解过程。在计算机上运用本文所述算法和背包问题的动态规划算法求解了大量例题。解题实践说明，对于大中型背包问题，两阶段动态规划算法由于只要求对少量变量进行排序而使解题时间大为缩短，是一种值得推荐的算法。     

A Dynamic Programming Algorithm for the κ-Haplotyping Problem

The Minimum Fragments Removal （MFR） problem is one of the haplotyping problems： given a set of fragments, remove the minimum number of fragments so that the resulting fragments can be partitioned into k classes of non-conflicting subsets. In this paper, we formulate the κ-MFR problem as an integer linear programming problem, and develop a dynamic programming approach to solve the κ-MFR problem for both the gapless and gap eases.     

油田稳产措施规划数学模型

措施规划是油田开发领域的一项极为重要的工作,它对于延长油田稳产年限,合理地安排稳产措施是十分必要的.本文对措施规划的几类数学模型进行了分析,提出了对不确定性因素的处理--随机规划的建立与求解方法.     

RECENT PROGRESS ON SPHERICAL HARMONIC APPROXIMATION MADE BY BNU RESEARCH GROUP ——In memory of Professor Sun Yongsheng

As early as in 1990, Professor Sun Yongsheng, suggested his students at Beijing Normal University to consider research problems on the unit sphere. Under his guidance and encouragement his students started the research on spherical harmonic analysis and approximation. In this paper, we incompletely introduce the main achievements in this area obtained by our group and relative researchers during recent 5 years （2001-2005）. The main topics are： convergence of Cesaro summability, a.e. and strong summability of Fourier-Laplace series; smoothness and K-functionals; Kolmogorov and linear widths.     

On a class of self-similar processes with stationary increments in higher order Wiener chaoses

We study a class of self-similar processes with stationary increments belonging to higher order Wiener chaoses which are similar to Hermite processes. We obtain an almost sure wavelet-like expansion of these processes. This allows us to compute the pointwise and local Hölder regularity of sample paths and to analyse their behaviour at infinity. We also provide some results on the Hausdorff dimension of the range and graphs of multidimensional anisotropic self-similar processes with stationary increments defined by multiple Wiener–Itô integrals.     

A REPRESENTATION FORMULA RELATED TO SCHR(O)DINGER OPERATORS

Schr(o)dinger operator is a central subject in the mathematical study of quantum mechanics.Consider the Schrodinger operator H = -△ V on R, where △ = d2/dx2 and the potential function V is real valued. In Fourier analysis, it is well-known that a square integrable function admits an expansion with exponentials as eigenfunctions of -△. A natural conjecture is that an L2 function admits a similar expansion in terms of "eigenfunctions" of H, a perturbation of the Laplacian (see [7], Ch. Ⅺ and the notes), under certain condition on V.     

On a class of Riemann surfaces

It is considered the class of Riemann surfaces with dimT1 = 0, where T1 is a subclass of exact harmonic forms which is one of the factors in the orthogonal decomposition of the spaceΩH of harmonic forms of the surface, namely The surfaces in the class OHD and the class of planar surfaces satisfy dimT1 = 0. A.Pfluger posed the question whether there might exist other surfaces outside those two classes. Here it is shown that in the case of finite genus g, we should look for a surface S with dimT1 = 0 among the surfaces of the form Sg\K , where Sg is a closed surface of genus g and K a compact set of positive harmonic measure with perfect components and very irregular boundary.     

Boundedness for commutators of multipliers on Hardy type spaces

In this paper, we study the commutators generalized by multipliers and a BMO function. Under some assumptions, we establish its boundedness properties from certain atomic Hardy space Hb^p（R^n） into the Lebesgue space L^p with p 〈 1.     

A unified approach to certain problems of best local approximation

In this paper we study best local quasi-rational approximation and best local approximation from finite dimensional subspaces of vectorial functions of several variables. Our approach extends and unifies several problems concerning best local multi-point approximation in different norms.     

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

<正>August 10-14,2015Beijing,ChinaThe 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     

Towards Excellence in Science Chinese Academy of Sciences

<正>May 26,2014,Beijing Science is a human enterprise in the pursuit of knowledge.The scientific revolution that occurred in the 17th Century initiated the advances of modern science.The scientific knowledge system created by