Estimation of Parameters of a Mixed Failure Time Distribution Which is a Mixture of Degenerate (Degenerate at Zero) and I. G. Distribution

The problem of estimation of parameters of a mixture of degenerate (at zero) and exponential distribution is considered by Jayade and Prasad (1990). The sampling scheme proposed in it is extended in this paper to a mixture of degenerate and Inverse Gaussian distribution. The Inverse Gaussian distribution is very relevant for studying reliability and life-testing problems. The inverse Gaussian being the first passage time distribution for Wiener process makes it particularly appropriate for failure or reaction time data analysis.     

Analysis of Order Statistics from Distributions with Regularly Varying Tails

In this article, necessary conditions for comparing order statistics from distributions with regularly varying tails are discussed in terms of various stochastic orders. A necessary and sufficient condition for stochastically comparing tail behaviors of order statistics is derived. The main results generalize and recover some results in Kleiber (2002 Kleiber, C. (2002). Variability ordering of heavy-tailed distributions with applications to order statistics. Statist. Probab. Lett. 58:381388.[Crossref], [Web of Science ®] , [Google Scholar], 2004 Kleiber, C. (2004). Lorenz ordering of order statistics from log-logistic and related distributions. J. Statist. Plann. Infer. 120:2004.[Crossref], [Web of Science ®] , [Google Scholar]). Extensions to coherent systems are mentioned as well.     

A comparison of systems and outcomes for safeguarding children in Australia and Norway

Using aggregated national data, this paper compares outcomes of Australian ‘child protection’ (CP) and Norwegian ‘child welfare services’ (CWS). We highlight each nation's context and key elements of their CP/CWS organizations, with emphasis on policy and programme orientation. System outcomes are examined along with the implications of their different approaches. The main policy focus in Australia is protection and risk, while Norway's systemic approach stresses prevention, early intervention and support. These differences influence practitioner's intervention strategies and how the needs of children and parents are met. In Norway, approximately 80% of the children in the CWS receive some sort of supportive services. In contrast, Australian services for supporting families are narrowly targeted. Both countries share the ‘best interest of the child’ principle and an increased focus on children's rights, and have experienced increased service demands and rates of children in out‐of‐home care. The paper explores the relative merits of these systems.     

新一代的光网络自动交换网络

对自动交换光网络(ASON)这一概念的提出做了简要的描述,介绍了ASON的主要特点、功能、接口、组成、以及实现ASON的核心协议GMPLS.     

企业关键智力资本识别的社会网络分析法研究

在知识经济社会环境下,智力资本作为企业的主导生产要素,已经成为企业创造价值和获取竞争优势的重要源泉。如何识别企业智力资本,尤其是对企业实现其战略目标具有重要作用的关键智力资本,是企业智力资本管理不得不面对的重要问题。文章引入社会网络分析法(SNA)识别企业关键智力资本,采用理论研究与案例研究相结合的方法,分析了企业智力资本的动态性和网络属性,对现有企业智力资本识别理论进行了回顾,简要介绍了社会网络分析的理论内涵及其分析方法之一——中心性分析法;从战略分析、智力资本分析、关联分析、矩阵分析等方面构建了基于SNA的企业关键智力资本识别模式;并运用中国企业的实例进行说明。文章在理论上拓展了社会网络分析法的应用范围,同时为企业智力资本管理提供了新的研究思路。     

A meso measure? Examination of the levels of analysis of the Multifactor Leadership Questionnaire (MLQ)

Critical review of the Multifactor Leadership Questionnaire, Form 5X (MLQ5X), reveals serious problems related to specification of the theoretical level of analysis at which it measures its underlying constructs. Data from two separate samples indicate that items of the commonly used MLQ5X are ambiguous with respect to level of analysis. It appears unclear in many instances whether the items reflect individual, group, or organizational referents. Based upon our analyses and the literature, we present specific propositions concerning the level(s) at which each MLQ5X dimension appears most appropriately conceptualized and measured, along with suggestions for future research and revision of the MLQ5X.     

以学科定位视角审视科学哲学的新走向

科学哲学的定位问题必须从学科的角度加以分析.在科学哲学的历史中一直有逻辑经验主义和历史主义两种传统,前者主张科学的哲学(Scientific Philosophy),后者主张有关科学的哲学(Philosophy ofScience).科学的哲学从元学科的角度认为科学就是元学科,即物理学和数学.一个是元内容,一个是元形式.科学哲学就是元学科的哲学.有关科学的哲学,认为从学科群的角度看,科学是以学科的相对独立性为基础的,以学科间的相互联系、相互作用为特征的"学科域"动态的学科分化和整合过程.科学既包括学科(不同)的分支,又包括学科间的一体化趋势;既有经典性的学科,也有处于研究阶段的研究性学科.科学哲学既包括学科哲学,也包括跨学科的哲学.学科哲学是有关科学的哲学的过度形态,是暂时的,而跨学科(学科域)研究代表了科学哲学发展的新方向.     

Abel series distributions with applications to fluctuations of sample functions of stochastic processes

A two-parameter class of discrete distributions, Abel series distributions, generated by expanding a suitable pa,rametric function into a series of Abel polynomials is discussed. An Abel series distribution occurs in fluctuations of sample functions of stochastic processes and has applications in insurance risk, queueing, dam and storage processes. The probability generating function and the factorial moments of the Abel series distributions are obtained in closed forms. It is pointed out that the name of the generalized Poisson distribution of Consul and Jain is justified by the form of its generating function. Finally it is shown that this generalized Poisson distribution is the only member of the Abel series distributions which is closed under convolution.     

Robust durbin's and portmanteau goodness-of-fit test statistics and their limit distributions

Robust analogue of Durbin's(1970)statistic is derived and its limiting distribution is obtained under both null and alternative hypotheses. Also, robust version of the portmanteau goodness-of-fit test statistic for AR(p)model is given and the asymptotic distribution is derived.