Leader-member exchange and organizational citizenship behaviors: Contextual effects of leader power distance and group task interdependence

In this paper we explore the context of the relationship between leader-member exchange and organizational citizenship behaviors (OCB). We maintain that workgroup leader's power distance and the extent of task interdependence in the group exert cross-level effects on the LMX-OCB relationship. We assert that leader power distance attenuates the relationship between LMX and OCB, and this effect is stronger in workgroups with high degree of task interdependence. Results of hierarchical linear modeling analysis of data gathered from 245 employees nested in 54 workgroups supported our hypotheses. LMX-OCB relationship was weaker in workgroups led by high power distance leaders. Further, the three-way cross-level interaction between LMX, leader power distance and group task interdependence demonstrated that the tendency for LMX to have a stronger positive effect on OCB when leader power distance was low rather than high was more pronounced in high task interdependence teams.     

Data tilting for time series

Summary. We develop a general methodology for tilting time series data. Attention is focused on a large class of regression problems, where errors are expressed through autoregressive processes. The class has a range of important applications and in the context of our work may be used to illustrate the application of tilting methods to interval estimation in regression, robust statistical inference and estimation subject to constraints. The method can be viewed as 'empirical likelihood with nuisance parameters'.     

工厂供电课程教学方法探讨

工厂供电课程存在着教学任务肾、课时少的现象,按传统的讲授法进行教学,会出现教不好、学不透的两难境地。为避免此类现象的发生,提出了引导法、角色转换法、对比论证法、现代教育法等多种教学方法。经过教学实践证明,这些方法能有效地提高学生的学习效率,促进学生综合能力的提高。     

论语文素质教育背景下的新诗教学

本文以语文素质教育为背景 ,联系中国诗教传统、新诗创作的发展和当代教育的历史转型 ,论述新诗的审美教育价值 ,包括培植理想精神、开启个体心智、蕴蓄生命激情和提升艺术地驾驭母语能力等方面 ,均有其他文体所无法取代的独特的美育价值。在此基础上 ,倡导注重美读、点拨和陶冶这些新诗教学的基本方法。     

现阶段村民自治运作中的权力博弈

村民自治的运作实际是村落场域内各权力主体之间的博弈过程。在现阶段中国农村村民自治运作中,权力博弈场内的主要局中人是政府、村干部、头面人物、普通村民。由于受村落场域多元性的影响,各类村庄权力主体在不同村庄的公共权力体系中所处的地位和发挥的作用有所差异,因此形成了干部支配型、精英主导型、群众自治型等多种村庄权力结构。村民自治运作中的权力博弈势必导致各类权力主体在村庄公共权力体系中的地位和作用的改变,并引起村庄权力结构的变迁。     

从创新中塑造企业核心竞争力

在市场边界瞬息万变的复杂商业环境下 ,只有真正具有核心竞争力的企业才可能驾驭市场 ,实现可持续发展。而核心竞争力来自于不断的创新 ,企业的核心竞争力要从技术、产品、管理和营销的创新中加以创造     

A toolbox for public relations: The oeuvre of Michel Foucault

In this article, we provide a brief introduction to the work of Michel Foucault. Our focus is on the major themes of Foucault's work: discourse, power/knowledge and subjectivity. We demonstrate the rich contribution that Foucauldian theory can make to public relations practice and scholarship by moving beyond a focus on excellence towards an understanding of public relations as a discourse practice with power effects.     

公共行政道德建设浅析

实现以德治国,提升整个社会的道德水准,只有加快以限权为中心的政府体制改革,改变政府的不道德作为,推进行政道德的法制化建设,加强行政人员的思想道德教育,建立道德的社会惩戒机制,把道德考核作为职务晋升的重要依据,才能实现高度的政治文明、精神文明和物质文明。     

Which Wald statistic? Choosing a parameterization of the Wald statistic to maximize power in k-sample generalized estimating equations

The Wald statistic is known to vary under reparameterization. This raises the question: which parameterization should be chosen, in order to optimize power of the Wald statistic? We specifically consider k-sample tests of generalized linear models (GLMs) and generalized estimating equations (GEEs) in which the alternative hypothesis contains only two parameters. An example is presented in which such an alternative hypothesis is of interest. Amongst a general class of parameterizations, we find the parameterization that maximizes power via analysis of the non-centrality parameter, and show how the effect on power of reparameterization depends on sampling design and the differences in variance across samples. There is no single parameterization with optimal power across all alternatives. The Wald statistic commonly used under the canonical parameterization is optimal in some instances but it performs very poorly in others. We demonstrate results by example and by simulation, and describe their implications for likelihood ratio statistics and score statistics. We conclude that due to poor power properties, the routine use of score statistics and Wald statistics under the canonical parameterization for GEEs is a questionable practice.     

用于分散电压控制的规则库法

电力系统正常运行时,无功/电压控制目的是安全经济供电.而在紧急情况下,首要目标是运行的安全性,其次才是经济性.本文提出的局部网概念及其灵敏度矩阵,以及对电压违限严重性的分级和控制战略,使控制更为快速有效.此法更适用于当事故引起全系统运行数据不全时对局部网的电压控制.