考虑通信质量的网络最小主控集生成算法

无人移动平台无线ad hoc网络在实际应用中经常会出现由于电磁环境、干扰等因素导致通信质量不稳定的情况,在上述条件下传统的基于节点覆盖度的最小主控集（MCS）生成算法难以获得具有较好稳定性、健壮性的最小主控集。为此,提出了一种考虑通信质量的网络最小主控集生成算法,将链路的通信质量纳入网络最小主控集构造的考虑因素,使网络拓扑与链路通信质量特性保持一致;并通过对候选节点集及拟覆盖节点集的压缩,有效控制了网络最小主控集的节点数目。仿真表明,对敏感于通信质量的应用,该算法较基于节点覆盖度算法能取得更好效果。     

A unified approach to systemic risk measures via acceptance sets

We specify a general methodological framework for systemic risk measures via multidimensional acceptance sets and aggregation functions. Existing systemic risk measures can usually be interpreted as the minimal amount of cash needed to secure the system after aggregating individual risks. In contrast, our approach also includes systemic risk measures that can be interpreted as the minimal amount of cash that secures the aggregated system by allocating capital to the single institutions before aggregating the individual risks. An important feature of our approach is the possibility of allocating cash according to the future state of the system (scenario‐dependent allocation). We also provide conditions that ensure monotonicity, convexity, or quasi‐convexity of our systemic risk measures.     

Data mining framework based on rough set theory to improve location selection decisions: A case study of a restaurant chain

Location selection plays a crucial role in the retail and service industries. A comprehensive location selection model and appropriate analytical technique can improve the quality of location decisions, attracting more customers and substantially impacting market share and profitability. This study developed a data mining framework based on rough set theory (RST) to support location selection decisions. The proposed framework consists of four stages: (1) problem definition and data collection; (2) RST analysis; (3) rule validation; and (4) knowledge extraction and usage. An empirical study focused on a restaurant chain to demonstrate the validity of the proposed approach. Twenty location variables relevant to five location aspects were examined, and the results indicated that latent knowledge can be identified to support location selection decisions.     

关于我国建立遗产税制的几点思考

遗产税是一个古老的、世界各国普遍征收的一种税,是调节社会成员财富分配的一种税收手段。中国在20世纪40年代曾开征过遗产税,新中国建立初期也设计过遗产税,但由于条件不具备而没有开征。改革开放以后,随着经济的迅速发展,各项改革的逐步深入,收入的不断增长,居民个人财富的拥有量在逐渐增加,以存量收入的财产为课征对象的遗产税的开征显得非常必要。     

CAD中图层图块在机械图样中的应用

以法兰盘零件图为例,描述了图层、图块的功能,同时描述了图层设置方法,图块设置方法。探讨了绘制零件图时图层、图块应用方法与技巧。     

符合当代人生活方式的茶具价值指标深析

中国茶叶品类繁盛,且在品饮中,特别讲究色、香、味、形,因此需要一系列能充分发挥各类茶叶特质的器具,这就使得中国的茶具异彩纷呈。无论是造型的优美,质地的精良,都有它的独到之处。中国茶具构成了中国茶文化不可分割的重要组成部分。     

Stochastic labelling of biological images

Many hypotheses made by experimental researchers can be formulated as a stochastic labelling of a given image. Some stochastic labelling methods for random closed sets are proposed in this paper. Molchanov (I. Molchanov, 1984, Theor. Probability and Math. Statist. 29 , 113–119) provided the probabilistic background for this problem. However, there is a lack of specific labelling models. Ayala and Simó (G. Ayala and A. Simó, 1995, Advances in Applied Probability 27 , 293–305) proposed a method in which, given the whole set of connected components, every component is classified in a certain phase or category in a completely random way. Alternative methods are necessary in case the random labelling hypothesis is not reliable. A different kind of labelling method is proposed that considers the environment: the type of every connected component is a function of its location.
Two different biphase images are studied: a cross section of a nerve from a rat, and a cross section of an optic nerve from a lizard.     

领导干部要在密切联系群众方面做表率

党员领导干部必须加强对党的作风建设的认识,认识党和职工群众血肉相联系的重要性,坚持党的群众路线,做到深入、关心、依靠职工群众,在密切联系群众中把党的作风建设的各项要求落到实处。     

Assessing Different Spatial Grouping Algorithms: An Application to the Design of Australia's New Statistical Geography

Abstract

Algorithms have been used to assist in the design of statistical geographies which define areal groupings for which official data are collected. Typically the groupings based on different parameter values or different algorithms are not formally compared, but summary statistics based on each solution can be constructed, some of which are based on fuzzy set principles. These principles can also be used to make incremental adjustments to solutions, based on different criteria. In this paper, we adopt the above methodology to compare the new statistical geography for New South Wales developed by the Australian Bureau of Statistics with that generated by an amended version of the Coombes algorithm.

RÉSUMÉ On a utilisé des algorithmes pour faciliter la conception de géographies statistiques définissant des groupements par zone pour lesquels des données officielles sont recueillies. En général, on ne compare pas officiellement les groupements basés sur différentes valeurs paramétriques ou différents algorithmes, mais il est possible de créer des statistiques sommaires sur la base de chaque solution, certaines desquelles sont fondées sur des ensembles de principes flous. Ces principes peuvent également être utilisés pour effectuer des modifications progressives sur des solutions, sur la base de différents critères. Dans la présente communication, nous adoptons la méthodologie susmentionnée pour comparer la nouvelle géographie statistique pour la province des Nouvelles Galles du Sud, créée par l'Australian Bureau of Statistics, avec celle qui a été produite par une version modifiée de l'algorithme de Coombes.

EXTRACTO Se han utilizado algoritmos para ayudar en el diseño de geografías estadísticas que definan los agrupamientos de áreas para los que se recopilan datos oficiales. Típicamente, los agrupamientos basados en valores de parámetros diferentes o algoritmos diferentes no se comparan formalmente, pero pueden construirse estadísticas resumidas basadas en cada solución, algunas de las cuales se basan en principios establecidos difusos. Estos principios también pueden emplearse para hacer ajustes incrementales a soluciones, basados en diferentes criterios. En este estudio, adoptamos la metodología anterior para comparar la nueva geografía estadística aplicable a Nueva Gales del Sur, desarrollada por la Australian Bureau of Statistics, con la generada por una versión modificada del algoritmo de Coombes.

摘要 : 在统计地理学设计中人们引入一些算法来定义采集官方数据的不同区域

分组 。通 常情况下 ' 基于不同参数或者算法的分组方式之间不会进行正式比较 ' 但是我们可以基于每种方法构建统计概要 ' 其中有一些使用了模糊集合理论 。这些理论也可用来根据不同准则对方案进行增量调整 。本文中 ' 我们使用上述方法比较了澳大利亚统计局为新南威尔士州建立的新统计地理学和采用修订的Coombes算法 得到的统计地理学 。