国有企业CEO注意力对产品创新影响的研究

在探讨了CEO注意力、产品创新表现与企业绩效之间的关系的基础上,构建了有关理论模型,并通过问卷收集的方法对国有企业CEO进行了调研。研究结果表明,国有企业CEO对于外部的注意力普遍高于其对内部的注意力;外部注意力对于产品创新的技术表现和市场表现均有积极影响,内部注意力仅与产品创新的技术表现正向相关;产品创新的技术表现对于企业的财务绩效和非财务绩效均有积极影响,仅市场表现对企业非财务绩效有积极影响。     

德沃金的建构性解释与反思平衡

“反思平衡”是一种道德原则或道德理论的证立方法,其具体过程可以分为四个阶段.反思平衡包括狭窄的反思平衡和宽泛的反思平衡,二者追求的目标分别是局部融贯和整体融贯.德沃金的“建构性解释”方法是反思平衡在法理学中的应用.建构性解释中的“符合”和“最佳”维度分别体现了狭窄的反思平衡和宽泛的反思平衡的要求.     

Testing non-nested log-linear models with pseudo estimator

As the number of random variables for the categorical data increases, the possible number of log-linear models which can be fitted to the data increases rapidly, so that various model selection methods are developed. However, we often found that some models chosen by different selection criteria do not coincide. In this paper, we propose a comparison method to test the final models which are non-nested. The statistic of Cox (1961, 1962) is applied to log-linear models for testing non-nested models, and the Kullback-Leibler measure of closeness (Pesaran 1987) is explored. In log-linear models, pseudo estimators for the expectation and the variance of Cox's statistic are not only derived but also shown to be consistent estimators.     

审视与优化:对微博问政现象的反思

微博问政是在新的网络环境下公民对于行政权力与行政行为的一种监督方式。首先基于社会结构分析范式,运用精英理论、政策过程理论等理论工具,论述微博问政内在逻辑与具体作用;其次结合案例总结当前微博问政的现状、特点及存在的一些问题;最后探讨了完善微博问政的思路。     

Nonparametric regression with cross‐classified responses

In this article, we develop regression models with cross‐classified responses. Conditional independence structures can be explored/exploited through the selective inclusion/exclusion of terms in a certain functional ANOVA decomposition, and the estimation is done nonparametrically via the penalized likelihood method. A cohort of computational and data analytical tools are presented, which include cross‐validation for smoothing parameter selection, Kullback–Leibler projection for model selection, and Bayesian confidence intervals for odds ratios. Random effects are introduced to model possible correlations such as those found in longitudinal and clustered data. Empirical performances of the methods are explored in simulation studies of limited scales, and a real data example is presented using some eyetracking data from linguistic studies. The techniques are implemented in a suite of R functions, whose usage is briefly described in the appendix. The Canadian Journal of Statistics 39: 591–609; 2011. © 2011 Statistical Society of Canada     

“七月革命”与埃及现代化进程的路标性转换

19世纪上半期开始的埃及现代化进程由于英国殖民主义入侵和统治而中断,1952年以纳赛尔为首的自由军官组织领导"七月革命"成功,1953年埃及被宣布为共和国,标志着埃及现代化进程的新纪元.第一,它实现了埃及民族国家重建和主权独立;第二,它完成了埃及政治现代化模式的制度性转换,即把埃及从一个殖民性君主专制国家带入了共和制时代;第三,在经济上它使埃及摆脱了对外国资本的依附,走上改革振兴之路;第四,纳赛尔主义上升为国家意识形态的主流意识,指导着埃及国家的全面发展;第五,埃及由一个政教合一的封建制国家成为一个世俗化的现代国家.这些对埃及的现代化都具有深远的影响和意义.     

Hazards regression for freemium products and services: a competing risks approach

We propose a competing risks approach to analyse customer behaviours in freemium products and services. The event of interest is when a customer starts to pay for additional features or functionalities. The observation of such an event may be preempted by an event where the customer quits using the product before paying and consuming the additional features or functionalities. One such freemium service is the online game category. The Fine-Gray regression model was implemented for an online game player activity data to study how covariates affect the paying hazard. Some covariates are hypothesized to have different discrete effects at multiple change points. We extend the model to allow for possible change points in the analysis.     

新时期高校思想政治理论教育的创新

外部环境的变化和个体主体意识的觉醒促使思想政治理论教育必须革新传统的教育模式,从教育理念、教育过程、教育载体和学科自身等方面进行创新以提高教学效果。     

文明交往视野下中东战争与和平的思考

从第二次世界大战结束到进入21世纪,中东地区局势成为一个充满了冲突与战争的国际政治难题.2003年伊拉克战争以来,中东危机显得更加危急,主要表现为:伊拉克局势恶化、阿以和平进程停滞、伊朗核问题逐步升级.中东的冲突呈现明显的周期性、长期性特点,其最根本的原因在于美以特殊关系的形成以及由此导致的他们同中东伊斯兰世界的关系复杂化.展望未来,中东地区局势存在如下几个特点:引发战争的因素依然没有消除、阿拉伯世界分化趋势日渐明显、国际社会干预能力大打折扣、大国之间新的博弈正在展开.