BPR项目的实施:革命性变革和渐进性变革

进入变化时代后,如何应对变化是公司的每一位成员必须面对的现实。理论界一直争论的革命性变化和渐进性变化两种策略各有其长,各有优势。本文探讨了这两种变化策略的特点,比较了它们的异同之处,并且总结了几条如何正确应用革命性变化和渐进性变化这两种策略的规则,为企业正确实施变化管理提供一定的参考价值。     

On Inverse Problems of Optimum Perfect Matching

As far as we know, for most polynomially solvable network optimization problems, their inverse problems under l ₁ or l norm have been studied, except the inverse maximum-weight matching problem in non-bipartite networks. In this paper we discuss the inverse problem of maximum-weight perfect matching in a non-bipartite network under l ₁ and l norms. It has been proved that the inverse maximum-weight perfect matching under l norm can be formulated as a maximum-mean alternating cycle problem of an undirected network, and can be solved in polynomial time by a binary search algorithm and in strongly polynomial time by an ascending algorithm, and under l ₁ norm it can be solved by the ellipsoid method. Therefore, inverse problems of maximum-weight perfect matching under l ₁ and l norms are solvable in polynomial time.     

简洁风格的辨析

通过对手工业时代的审美特征的反思,指出了简洁风格是技术进步创造的,是符合潮流的一种本质上的新的追求.论述了简洁风格的利弊,指出新的工业化成衣是"服装服务于人"这一理念的实现.     

舞阳贾湖龟甲与伏羲氏画八卦

河南舞阳贾湖裴里岗文化遗址发现的龟占器具和卦象文字,是伏羲氏“画八卦、造书契”的有力佐 证,它拉开了中华民族五千年文明的序幕,在中华文明起源和发展史上具有划时代的意义。     

“复调”和“狂欢化”——巴赫金的“超技术(语言)”批评及其在巴赫金文论思想体系中的地位

本文从巴赫金的“技术”思想出发 ,对其“复调理论”和“狂欢化理论”给予了定位 ,并对其表现出的“超技术 (语言 )”批评的特点进行了分析。本文认为 ,在巴赫金的文论中贯穿着他对“技术”问题的思考 ,依次表现为他的“艺术中的技术”概念的提出、“超语言学”的理论建构和他的“超技术 (语言 )”批评的实践。“复调”和“狂欢化”作为其中的代表充分体现了“超技术 (语言 )”批评的基本特点     

异体字("重文")漫议

<说文>的异体字("重文")和现代异体字有着错综复杂的对应关系.就现代异体字情况看,它与繁简字、古今字、通假字、分化字、错讹字、新旧字形等多种文字现象有关涉.异体字是有历史层次的,应从历史发展的观点看待异体字.从研读古籍和文字使用方面看,应分清全同异体字和部分异体字.从整理异体字角度看,<说文>是历史上第一次对异体字进行了大规模的整理,开创了历史的先例,给我们很多有益的启示.     

元赋“祖骚宗汉”论

文章认为,“祖骚宗汉”实质上是元人不满于律赋的偏尚俳偶与文赋的倾于理趣,却又缺少情感或藻彩而提出的一个辞赋革新的口号。在这面旗帜下,元赋作家学习楚辞,宣泄失志之悲,驰骋想象,展开入地升天的描写;也学习汉赋的颂美皇家和铺陈讽谏。这些努力强化了元赋的抒情性和生动性,复兴了古赋的宏大气势,使之获得较高的文学价值,并奠定了明清辞赋以古为主的格局。元赋的不足是思想境界稍欠高迥,也缺少全新的创造。     

The power and limits of ethnonationalism: Palestinians and Eastern Jews in Israel, 1974-1991

The relative standings of four ethnic groups - Muslim Palestinians, Christian Palestinians, Asian-African Jews, European Jews -were compared, using mobility data from 1974 and 1991. The findings show that despite the lack of government support and the prevalence of inexorable discrimination against Israeli Palestinians, they have narrowed the gap with Asian-African Jews in both education and occupational prestige. This finding demonstrates that ideological and political hegemony is not always effective in improving the socio-economic standing of preferred minorities (Asian-African Jews), and that social and economic structures may counterbalance the anti-Palestinian nationalist ideology. The analysis suggests that residential and educational segregation of Palestinians protects them from direct competition with European Jews, whereas Asian-African Jews have to compete with this dominant group in schools, as well as in the labour market.     

(Q,r)库存中的提前期压缩问题研究

本文在提出了新的具有分段可微特征的提前期压缩成本函数的基础上,构建了一个两阶段(Q,r)库存模型。并在一定服务水平约束条件下,进一步利用成本函数分段可微的特性结合数学分析的理论将原问题分解为一个无约束问题和一个等式约束问题。理论分析及算例表明,可以通过合理的确定模型中的订货量Q、订货点r、提前期加速因子τ等参数值使得在服务水平得到一定提高的同时成本也得到优化。     

The densest <Emphasis Type="Italic">k</Emphasis>-subgraph problem on clique graphs

The Densest k-Subgraph (DkS) problem asks for a k-vertex subgraph of a given graph with the maximum number of edges. The problem is strongly NP-hard, as a generalization of the well known Clique problem and we also know that it does not admit a Polynomial Time Approximation Scheme (PTAS). In this paper we focus on special cases of the problem, with respect to the class of the input graph. Especially, towards the elucidation of the open questions concerning the complexity of the problem for interval graphs as well as its approximability for chordal graphs, we consider graphs having special clique graphs. We present a PTAS for stars of cliques and a dynamic programming algorithm for trees of cliques. M.L. is co-financed within Op. Education by the ESF (European Social Fund) and National Resources. V.Z. is partially supported by the Special Research Grants Account of the University of Athens under Grant 70/4/5821.