我国企业家队伍建设问题探讨

企业家的角色主要定位于企业的决策者、企业的创新者,企业风险的承担者。我国企业家队伍随着改革开放与市场经济发展起来,基本现状为:队伍不断发展壮大,成长环境不断改善提高;才能得到发挥,价值得到一定体现;但部分企业家自身素质依然低下。问题形成主要来自于三大机制因素:选拔任用机制不健全;监督约束机制不健全;激励机制不完善。解决问题的关键当然在于三大缺陷机制的健全完善,加强对企业家与世贸规则接轨的素质的全面培训。     

Iran and COVID-19: A Bottom-up,Faith-Driven,Citizen-Supported Response

Public Organization Review - The COVID-19 pandemic cast doubts on governments' traditional crisis responses and sparked a surge in citizen-led, participatory, bottom-up responses. Iran's...     

读《永生医院》，想象“永生”——从“写什么”说到“生生”

文章以郝景芳在《永生医院》中遭遇到的"永生"问题为切入点,在中西方生命哲学的大背景下,对当代科技手段制造出来的"新人"所带来的文化冲击和个体生命的意义危机进行了深入的思考。作者从中国传统的"生生"哲学出发,深入剖析了以技艺人的工作经验为基础的古希腊"制造"哲学借助于当代科技手段造成的生命哲学危机,指出"永生"不是生命的最高目标,唯有在变动不息的"生生"之中,才有生命的真实意义。     

国外城市雨洪管理再认识及其启示

针对近年中国城市雨洪灾害频发、灾害危害严重,以及雨洪管理理念和方法仍在摸索阶段的现实,文章通过横向对比发达国家雨洪管理过程、阶段,探索总结了国外雨洪管理体系的阶段性与多元化、发展历程的过程性和演进性、治理模式的综合性、空间特征的地域趋同性特征,并系统剖析其形成的深层城市发展原因,结合中国的城市实际情况,提出了未来城市雨洪管理可发展方向的思考,认为未来在多尺度水文条件下的雨洪灾害形成内因探索、复杂环境下多要素集成分析、多过程连续的雨洪灾害发生动力机制等方面是研究发展方向之一.     

农村老年人日常生活家庭照料与社会照料关系研究——基于多层回归模型的分析

文章利用中国健康与养老追踪调查 2011—2012 年的基线调查数据,运用多层回归模型,通过分析社会照料对农村老年人家庭照料获得的影响,探讨家庭照料与社会照料的关系。 回归估计结果显示,个人层次上的年龄、居住状况、失能情况和社区层次上的老龄补贴、经济状况对农村老年人获得家庭照料有不同程度的影响,而代表社会照料的变量在统计上均不显著。 回归估计结果说明,社会照料并不能对缺位的家庭照料起到补充作用,更不会起到替代作用,两者呈现一种非此即彼的“无关系”。 文章的政策启示是,打破家庭照料与社会照料的壁垒,构建一个“流动”的老年照料体系。     

地方普通本科院校办学定位及分类发展研究--以广西为例

通过非介入性研究方法，对广西普通本科院校办学定位进行分析，从办学目标、办学类型、办学层次、人才培养、服务面向等六个方面论述办学定位现状，分析定位特征及其存在的问题。     

Inferences on the ratio of two generalized variances: independent and correlated cases

Statistical inferences about the dispersion of multivariate population are determined by generalized variance. In this article, we consider constructing a confidence interval and testing the hypotheses about the ratio of two independent generalized variances, and the ratio of two dependent generalized variances in two multivariate normal populations. In the case of independence, we first propose a computational approach and then obtain an approximate approach. In the case of dependence, we give an approach using the concepts of generalized confidence interval and generalized p value. In each case, simulation studies are performed for comparing the methods and we find satisfactory results. Practical examples are given for each approach.     

Semi-doubly optimal concentric circles fitting with presence of heteroscedasticity

Previous studies focus on homogeneous and isotropic assumptions about the noisy data. Many methods have been developed recently for fitting concentric circles to data. In this paper, these statistical assumptions have been relaxed. To the best of our knowledge, only one iterative method has been recently developed. Due to its complexity, no such algorithm is available to compute the reliable maximum likelihood estimator (MLE). Accordingly, we have developed four new methods that outperform the existing methods including the orthogonal distance regression (ODR). We also discuss which of these methods is superior according to the four principles: statistical efficiency, accuracy, robustness, and computational efficiency. Numerical experiments on synthetic and real images have been conducted to validate our findings.