Generating Ordered Families of Lorenz Curves by Strongly Unimodal Distributions

From any strongly unimodal density on the real line, it is possible to generate a one-parameter family of Lorenz curves. The resulting families of Lorenz curves are Lorenz ordered with respect to the indexing parameter. Symmetry of the unimodal density results in the generation of symmetric Lorenz curves. A related characterization of the normal distribution is presented.     

组织冲突的结构因素研究

本文通过问卷调查的方式对组织冲突、组织结构因素以及它们之间的关系等方面的假设进行了实证考察,指出了组织冲突水平的衡量标准、管理层次、生命周期阶段、业务流程依存性等组织结构因素与组织冲突的关系。最后,提出了在组织冲突和组织结构因素等方面的管理政策建议。     

基于EOQ的集成供应成本分摊问题研究

第三方物流的集成供应是降低供应链成本的有效途径,而集成供应成本在各供应商企业之间的分摊是需要解决的核心问题.本文详细阐述了第三方物流的集成供应问题,基于合作博弈理论建立了第三方物流集成供应的成本分摊模型.在采用夏普利值法对该模型进行求解的过程中,针对夏普利值法难以赋值的问题,引入集成供应的经济订货批量模型,有效解决了了第三方物流供应成本分摊问题.最后,用算例对该方法进行了说明.     

A graphical method for comparing trends in series of events

This paper describes a new graphical method for comparing trends in two or more series of events. The method is applicable,e.g., to observations such as the successive times to failure of two or more devices and the arrival times on succeeding days at a service facility. The graphs provide information about the rela-tive trend and can be used to order several series with respect to rates of occurrence of events. The series are assumed independent of one another and are assumed to follow nonhomogeneous Poisson processes with mean functions and rate functions unspeci-fied.     

C434. Local bounds on power of T2 in scale families

In this paper, we have developed a likelihood ratio factorization technique for variable selection for multiple observations model. The asymptotic distribution of the selection criterion is also given. This technique has been applied to a marketing data set for illustration of the technique developed.     

Order preserving property of moment estimators

Balakrishnan and Mi (2001) considered order preserving property of maximum likelihood estimators. In this paper there are given conditions under which the moment estimators have the property of preserving stochastic orders. The preserving property for the usual stochastic order as well as for likelihood ratio one is considered. Sufficient conditions are established for some parametric families of distributions.     

Monotonicity and unbiasedness of tests via a. S,constructions

It is shown that the coupling of distributions by their quantile transforms leads to simple and unifying proofs of monotonicity and unbiasedness properties of tests in many nonparametric testing problems     

Sample size selection in clinical trials when population means are subject to a partial order: one-sided ordered alternatives

The statistical methodology under order restriction is very mathematical and complex. Thus, we provide a brief methodological background of order-restricted likelihood ratio tests for the normal theoretical case for the basic understanding of its applications, and relegate more technical details to the appendices. For data analysis, algorithms for computing the order-restricted estimates and computation of p-values are described. A two-step procedure is presented for obtaining the sample size in clinical trials when the minimum power, say 0.80 or 0.90 is specified, and the normal means satisfy an order restriction. Using this approach will result in reduction of 14-24% in the sample size required when one-sided ordered alternatives are used, as illustrated by several examples.     

Exponential random graph model specifications for bipartite networks—A dependence hierarchy

In this paper, we review the development of dependence structures for exponential random graph models for bipartite networks, and propose a hierarchy of dependence structures within which different dependence assumptions may be located. Based on this hierarchy, we propose a new set of model specifications by including bipartite graph configurations involving more than four nodes. We discuss the theoretical significance of the various effects that the extended models afford, and illustrate application of this hierarchy of models to several bipartite networks related to the political mobilization in Brazil in the early 1990s (Mische, 2007).     

ON BECOMING DISABLED AND ARTICULATING ALTERNATIVES

The topic of this article is the ordering of disability. The question is how people become, and are made, disabled. This is linked with a further question about how to investigate and represent differences such as those between ability and disability. How can studies that aim to contribute to opening up and remaking the conditions of possibility for disability avoid reproducing the same differences and distributions of power and agency? Indeed, disability studies have contributed to denaturalizing ability as well as disability. Many of these studies owe much to genealogical approaches focusing on the descent, regulation, and generative power of discourse. But then the problematic inference is drawn that this discourse imposes itself to order how people perceive and think, materializes in bodies and practices, and does so in a coherent manner. The objective in this article is to pursue a different approach that investigates ordering in practice, brings out the existing alternatives and explores the possibilities for articulating these. For this endeavour, the author mobilizes a specific strand of Foucauldian work and reworkings of it in science and technology studies. Drawing on a study of life after road traffic accidents in Norway, this article explores the following: how disability becomes enacted in everyday practices; the character of the modes of ordering that emerge in these practices; how this ordering is achieved; and the nature of the relations and interferences between these ways of becoming disabled. The argument is that in practice people slip and move between multiple modes of ordering that co-exist, are partially related in complex ways, and even folded into each other. Finally, the article considers the relation between openness and multiplicity – and their study – in view of possibilities for articulating alternatives.