水果摊的机会

以前，一个水果摊的老板因为年岁大了，无法久站招呼客人，于是就发启事招聘一名店员。
　　来了一个30多岁的男子，问老板一个月用多少钱请他来帮忙，老板笑着说：“我这小摊生意，哪里付得出月薪，当然是看你的努力了，一天能卖多少水果，收到的钱就给你十分之一，每天领现。”这个男子听了，上下打量打量小水果摊，说太没保障了，掉头走了。     

危机应对术

回忆去年的情况，用一段比较流行的话来说，基本上眼睛一闭一睁，发现世界变了，箭头的方向变了，指标的颜色变了，公司的形势变了，经营业绩变了。     

多目标装配线平衡的优化算法

在生产制造系统中，装配线的平衡需要针对多个目标，传统的装配线平衡问题，优化单一目标，忽略了目标之间的联系。优化一个目标的同时，劣化了另外一个目标。章研究了多目标装配线平衡问题，探讨了这些目标之间的联系，设计了禁忌搜索算法求解多目标装配线的平衡问题。章从生产管理系统的角度优化多目标装配线平衡，与单一目标相比，具有显的改进。     

外星人的游戏机（下）

五、勇斗粘丝怪
　　杀掉巨蟒怪物后，杰克突然感觉自己比以前强壮了许多，并且还得到了一把弓箭。他不敢耽搁，拿起弓箭，继续自己的征程。
　　走了一会儿，杰克的四肢酸软起来，他只好停了下来，靠着一棵大树，一边擦着脸上的汗水，一边大口地喘着粗气。     

本期知识整合与能力提升

同学们，朋友们，通过本期的学习，我们认识了数的又一次扩展，理解了坐标的意义及函数关系，会进一步整理数据，知道了相似三角形的特征与识别方法，明确了直角三角形的边角关系，掌握了解决一些简单实际问题的方法，收获可真不小。     

模糊Bayes检验

本文对原假设和备择假设中参数是模糊子集的假设检验问题，引入了模糊Ｂａｙｅｓ检验的概念，对简单模糊假设，给出了求模糊Ｂａｙｅｓ检验的方法，讨论了它的性质，并针对一类特殊的隶属函数，得出了检验的具体公式。最后，通过几个数值实例，表明了模糊Ｂａｙｅｓ检验的优良性。     

尚志市认真开展海峡两岸珠算比赛活动

为弘扬中华民族传统文化，庆港回归．加强海峡两岸学术文化交流，提高两岸学子学习珠算的兴趣，尚志市财政局按省璩算协会的要求．进行了广泛宣传，认真发动，精心组织，在尚志市职业教育中心学校、石头河子镇小学、供销合作联社学校积极开展了海峡两岸璩算通信比赛活动。参赛者热情高涨、精神振奋、严肃认真，赛出了风格，赛出了水平，再现了中华儿女的精神风貌。     

王承志同志在省珠协三届一次理事会议预备会上的讲话

今天，我主要来看看大家。明天，省委召开副厅级以上干部会议，传达党的十三居四中全会精神，我也参加不上了。因为，国务院来了20多位同志，检查工作。所以，省珠协的会议也参加不上了，今晚，借着预备会的机会，提前来说一说。     

含T—fuzzy数据的聚类与识别模型

本文给出了Ｔ－ｆｕｚｚｙ数据的定义，性质及度量公式，并用正规标准化方法统一量纲。首先探讨了Ｍｉｎ－Ｍａｘ传递闭包和α（或β）阈值原理，提出了求传递背包的简捷算法，首次，建立了含Ｔ－ｆｕｚｚｙ数据的聚类分析模型，最后，提出了含Ｔ－ｆｕｚｚｙ数据的模式识别模型及其三种算法，实例说明，用本文算法，其结果与实际基本吻合。     

影响珠心算教学的主要心理因素

一位优秀教师在介绍工作经验时说：“文化大革命’中，我这个教了十几年的中学教师，也被称为学术权威，而且是‘反动的学术权威，，拉下讲台，成天劳动，打扫厕所，受尽责骂和侮辱。我经过了风风雨雨的严峻考验，并暗下决心，要忍辱负重，勇敢地活下去，还要重上讲台。为了提高教学质量，曾制订了     

Qualitative Analysis of Bifurcating Solutions in the Lengyel-Epstein Model

One of the most fundamental problems in theoretical biology is to explain the mechanisms by which patterns and forms are created in the＇living world. In his seminal paper ＂The Chemical Basis of Morphogenesis＂, Turing showed that a system of coupled reaction-diffusion equations can be used to describe patterns and forms in biological systems. However, the first experimental evidence to the Turing patterns was observed by De Kepper and her associates（1990） on the CIMA reaction in an open unstirred reactor, almost 40 years after Turing＇s prediction. Lengyel and Epstein characterized this famous experiment using a system of reaction-diffusion equations. The Lengyel-Epstein model is in the form as follows     

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 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.     

(0,1 ;0)-INTERPOLATION ON INFINITE INTERVAL (-∞, +∞)

In this paper, we study the explicit representation and convergence of (0, 1; 0)-interpolation on infinite interval, which means to determine a polynomial of degree ≤ 3n - 2 when the function values are prescribed at two set of points namely the zeros of Hn(x) and H′n(x) and the first derivatives at the zeros of H′n(x).     

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.     

CONTENTS OF VOLUME 30

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Instructions for contributions

正Applied Mathematics-A Journal of Chinese Universities,Series B(Appl.Math.J.Chinese Univ.,Ser.B)is a comprehensive applied mathematics journal jointly sponsored by Zhejiang University,China Society for Industrial and Applied Mathematics,and Springer-Verlag.It is a quarterly journal with     

Journal of Mathematical Research with Applications Guide for Authors

正Journal overview:Journal of Mathematical Research with Applications(JMRA),formerly Journal of Mathematical Research and Exposition(JMRE)created in 1981,one of the transactions of China Society for Industrial and Applied Mathematics,is a home for original research papers of the highest quality in all areas of mathematics with applications.The target audience comprises:pure and applied mathematicians,graduate students in broad fields of sciences and technology,scientists and engineers interested in mathematics.     

Staircase transportation problems with superadditive rewards and cumulative capacities

A cumulative-capacitated transportation problem is studied. The supply nodes and demand nodes are each chains. Shipments from a supply node to a demand node are possible only if the pair lies in a sublattice, or equivalently, in a staircase disjoint union of rectangles, of the product of the two chains. There are (lattice) superadditive upper bounds on the cumulative flows in all leading subrectangles of each rectangle. It is shown that there is a greatest cumulative flow formed by the natural generalization of the South-West Corner Rule that respects cumulative-flow capacities; it has maximum reward when the rewards are (lattice) superadditive; it is integer if the supplies, demands and capacities are integer; and it can be calculated myopically in linear time. The result is specialized to earlier work of Hoeffding (1940), Fréchet (1951), Lorentz (1953), Hoffman (1963) and Barnes and Hoffman (1985). Applications are given to extreme constrained bivariate distributions, optimal distribution with limited one-way product substitution and, generalizing results of Derman and Klein (1958), optimal sales with age-dependent rewards and capacities.To our friend, Philip Wolfe, with admiration and affection, on the occasion of his 65th birthday.Research was supported respectively by the IBM T.J. Watson and IBM Almaden Research Centers and is a minor revision of the IBM Research Report [6].