Perception of value congruence and interethnic behavioral intentions

Two studies were conducted to investigate the effects of ethnocentrism, cognitive differentiation and extent of contact/information experienced with three stimulus groups varying in ethnicity on (a) respondents' perceptions of similarity in personal values between themselves and members of these ethnic groups, and (b) social distance orientations toward these groups. None of the predictor variables systematically induced differential attributions of value similarity. Ethnocentrism was found to be the most potent determinant of social distance, with low ethnocentric persons showing less social distance toward ethnic outgroups. The results were generally compatible with the notion of social competition proposed by Turner (1975) as a relevant factor in interethnic relations and are discussed in relation to the belief differences theory of prejudice (Rokeach, Smith & Evans, 1960) and the concept of positive prejudice (Dienstbier, 1970; Dutton, 1976).     

Analogy in William Rowan Hamilton's New Algebra

This essay offers the first analysis of analogy in research-level mathematics, taking as its case the 1837 treatise of William Rowan Hamilton. Analogy spatialized Hamilton's key concepts—knowledge and time—in culturally familiar ways, creating an effective landscape for thinking about the new algebra. It also structurally aligned his theory with the real number system so his objects and operations would behave customarily, thus encompassing the old algebra while systematically bringing into existence the new.     

论哈密尔顿图的判定问题

本文探讨了哈密顿图的性质，并根据这些性质给出了若干种判定非哈密顿图的方法。     

GRIN光学中光线追迹的一种新方法

由Hamilton光学中的Lagrange方程推出光线方程，用Runge-Kutta方法求解光线方程，给出光线追迹的新方法。     

Fuzzy有向图中有向路及有向圈存在的条件

对Fuzzy有向图定义了邻接矩阵,并通过对邻接矩阵幂的讨论,探讨了Fuzzy有向图中从有向途径中分离有向路的条件,有向圈及有向Hamilton圈存在的条件。     

边q≥Cp^2-1＋1的（p，q）图的泛圈性

该文给出了n阶（p，q）图当q≥Cp^2-1＋1时G为泛圈图的充要条件．     

Hamilton图的判定算法

Hamilton问题是图论的一个重要问题,判定一个图是否是Hamilton图虽然已找到了几个充分条件和必要条件,但不是充要条件,而且用这些条件来判定一个图是否是Hamilton图非常不好用,本文给出一个算法,对于任意给定的无向简单连通图可以判定其是否是Hamilton图,如果是Hamilton图,还可给出Hamilton回路。     

Hamilton算子的几个交换性质在谐变场中对波动方程的简化

本文证明了Hamilton算子的几个交换运算性质(n为自然数),并指出它们在电磁学谐变场中有重要的应用。     

货郎担问题的指派解法

货郎担问题是组合优化中的著名问题，到目前为止它还没有一个有效算法。本文把它转化为增加限制条件的指派问题，对图邻接矩阵形对角进行分析，给出了这一问题的一个较好近似算法。     

包含连通度的Hamilton图

设G是一个 2连通简单图 ,具有阶n和连通度k .Bauer等人已证明 :如果对任意三点独立集S =u ,v ,w ,都有d(u) +d(v) +d(w)≥n +k ,则G是Hamilton图 .本文改进了这个结果 .如果一个独立集S中存在距离为 2的 2点 ,则称S是一个 2独立集 .本文证明了如下结果 :如果对任意 3点 2独立集S =u ,v ,w ,都有d(u) +d(v) +d(w)≥n +k .则G是Hamilton图 .这个结果意味我们仅需要检查所有 2独立集是否满足条件