Improving flexibility and efficiency by adding parallelism to genetic algorithms

In this paper we develop a study on several types of parallel genetic algorithms (PGAs). Our motivation is to bring some uniformity to the proposal, comparison, and knowledge exchange among the traditionally opposite kinds of serial and parallel GAs. We comparatively analyze the properties of steady-state, generational, and cellular genetic algorithms. Afterwards, this study is extended to consider a distributed model consisting in a ring of GA islands. The analyzed features are the time complexity, selection pressure, schema processing rates, efficacy in finding an optimum, efficiency, speedup, and resistance to scalability. Besides that, we briefly discuss how the migration policy affects the search. Also, some of the search properties of cellular GAs are investigated. The selected benchmark is a representative subset of problems containing real world difficulties. We often conclude that parallel GAs are numerically better and faster than equivalent sequential GAs. Our aim is to shed some light on the advantages and drawbacks of various sequential and parallel GAs to help researchers using them in the very diverse application fields of the evolutionary computation.     

古籍整理与方言的关系

本文分两个部分：第一部分讨论了古籍中因方言的存在而造成了异文和疑难词语的问题；第二部分讨论了古籍训诂应该重视方言的研究成果的问题。总之，本文旨在论述古籍整理与方言（包括古代和现代）研究的重要关系，不重视０方言研究的成果，就难以很好地做好古籍的校勘和训诂工作。     

分层总线式群集系统设计

给出了一种基于通信效率和群集度比(T_e/I_l)构建有限层总线式松耦合并行系统的一般模型,并详细描述下一个6×6群系统的设计思想和实现过程,工作结果将指导这类系统的集成。     

平行志愿背景下地方高校招生宣传策略探讨

文章分析了平行志愿招生办法的实施给地方高校招生及招生宣传工作带来的影响和挑战，并借鉴品牌学、市场营销学的相关策略，对平行志愿背景下如何开展招生宣传、切实增强招生宣传效果等问题作了探讨。     

新经济形势下的遗产税和赠与税

近年来,随着我国经济的发展,人民收入水平不断提高,贫富差距也逐渐扩大,使遗产税和赠与税开征有越来越重要的现实意义和必要性。而遗产税和赠与税应该配合征收,采用并行征税模式。这样能够在一定程度上完善我国现行的税收体制,促进我国经济的发展。     

A mathematical model and genetic algorithm-based approach for parallel two-sided assembly line balancing problem

Assembly lines are usually constructed as the last stage of the entire production system and efficiency of an assembly line is one of the most important factors which affect the performance of a complex production system. The main purpose of this paper is to mathematically formulate and to provide an insight for modelling the parallel two-sided assembly line balancing problem, where two or more two-sided assembly lines are constructed in parallel to each other. We also propose a new genetic algorithm (GA)-based approach in alternatively to the existing only solution approach in the literature, which is a tabu search algorithm. To the best of our knowledge, this is the first formal presentation of the problem as well as the proposed algorithm is the first attempt to solve the problem with a GA-based approach in the literature. The proposed approach is illustrated with an example to explain the procedures of the algorithm. Test problems are solved and promising results are obtained. Statistical tests are designed to analyse the advantage of line parallelisation in two-sided assembly lines through obtained test results. The response of the overall system to the changes in the cycle times of the parallel lines is also analysed through test problems for the first time in the literature.     

Characterizations based on Rényi entropy of order statistics and record values

Two different distributions may have equal Rényi entropy; thus a distribution cannot be identified by its Rényi entropy. In this paper, we explore properties of the Rényi entropy of order statistics. Several characterizations are established based on the Rényi entropy of order statistics and record values. These include characterizations of a distribution on the basis of the differences between Rényi entropies of sequences of order statistics and the parent distribution.     

信息控制与篇章构建

建构篇章以传递信息为目的。篇章是个控制论系统 ,信息编码者在操作时必须考虑解码者对所传递信息前提的认知能力以及对信息本身的解读能力 ,从而对编码方式做出调整。在宏观结构上 ,篇章的信息分布应表现出有序性并形成信息链 ;在信息编码处理上 ,利用删除规则、概括规则、组织规则、名词化等手段能增强信道的输送能力。以信息控制论参与语篇建构应遵循经济、适量、保真等原则 ,以达成信息传递的佳效。     

双轴平动椭圆振动筛设计中的有关问题

本文在首次提出双轴惯性振动筛“力心”概念的基础上,对双轴惯性椭圆振动筛设计中的有关分析进行了讨论,列举了若干算例,编制了相应的计算机软件,可供振动筛研制设计时应用。根据本文所述方法,已经研制成功了具有平动椭圆运动轨迹的PTZS振动筛。     

《庄子》同心圆寓言初探

围绕同一寓意而组织起来的若干篇寓言,即同心圆寓言。在对同心圆寓言作了界定的同时,对《庄子》同心圆寓言也进行了分析,认为《庄子》同心圆寓言可分为平列式、嵌入式和公转式三种类型。《庄子》同心圆寓言,既可以形象地表达思想,也能鞭辟入里地进行论辩,还有利于保存寓言珍品。