自由：当代灾疫防治应遵循的伦理原理

当代灾疫防治所遵循的伦理原理,只能是自由原理,因为当代灾疫防治必须进行生境重建才能实现家园重建并开辟生境化的生态文明道路。重建生境,就是实现自然、生命、人、社会的共在互存、共生互生,因而,它必须遵循宇宙律令、自然法则、生命本性。而自由恰恰是宇宙的神圣律令、自然的最高法则和生命的内在本性。     

基于网络心理再整合营销模型的实施风险分析

根据网络整合营销理论和市场心理学知识,创建了网络心理再整合营销模型。借助风险理念和项目网络图对网络心理再整合营销的实施风险进行测评分析,并结合实际案例研究了此营销实施的可行性和有效性。以此指导企业或商家实施有效的网络营销工作,推动我国电子商务健康有序地发展。     

如何做英语“完形填空”试题

完形填空题是一种立意新、要求高的综合性语言测试题。它既能考查学生的语言知识水平,又能检测他们的分析判断能力和综合运用语言的实践能力。本人试图从命题趋势、解题思路、解题步骤诸方面分析、探究该题型的特点、规律及解题技巧,以便使考生能更好地了解掌握该题型,提高语言综合运用能力。     

地下钱庄案频发的思考

以广东“杜氏地下钱庄”案和上海“罗怀韬地下钱庄”案为例,对当前地下钱庄案频发冲击金融市场及经济秩序、助长国内非法资金清洗出境、影响房地产和资本市场等危害性进行了分析,提出了多部门配合打击、实施“疏”的手段、健全完善相关法律规定等有关建议,以期对当前反洗钱工作有所裨益。     

林业生态工程与项目管理

林业生态工程是改善生态环境的有效之举 ,它对传统的、粗放的林业管理方式提出了挑战。本文主要论证了林业生态工程实行项目管理的必要性、存在问题及建议     

影响学术期刊质量的因素及其对策研究

高等学校学报质量是学报工作的重点,以《湖北民族学院学报(自然科学版)》为例,对影响学报质量的因素进行了全面的分析,提出在众多因素中学术质量是影响学报质量最主要的因素,并提出了相应的对策。     

民国时期河北水灾频发的原因探析

河北地处华北,按其地理位置和气候特征而言,应以旱灾为主。但是民国38年间,河北的水灾竟超过旱灾,打破了传统＂南涝北旱＂的说法,成为对河北危害最大的灾种。文章通过对民国38年河北水灾情况进行简单梳理分析发现：民国时期河北水灾的发生多是由于连降大雨、河流溃堤决口造成,这除了与河北的地形条件、季风气候特点、河流的分布状况等自然因素有一定关系外,主要还与民国时期政府不重水利、战乱年代对水利设施和森林植被严重破坏等社会因素有重要关系。所以,预防灾害并非难事,只要国家稳定,注重水利建设和自然环境保护,很多灾害是可以避免的。     

Inferential Theory for Factor Models of Large Dimensions

This paper develops an inferential theory for factor models of large dimensions. The principal components estimator is considered because it is easy to compute and is asymptotically equivalent to the maximum likelihood estimator (if normality is assumed). We derive the rate of convergence and the limiting distributions of the estimated factors, factor loadings, and common components. The theory is developed within the framework of large cross sections (N) and a large time dimension (T), to which classical factor analysis does not apply. We show that the estimated common components are asymptotically normal with a convergence rate equal to the minimum of the square roots of N and T. The estimated factors and their loadings are generally normal, although not always so. The convergence rate of the estimated factors and factor loadings can be faster than that of the estimated common components. These results are obtained under general conditions that allow for correlations and heteroskedasticities in both dimensions. Stronger results are obtained when the idiosyncratic errors are serially uncorrelated and homoskedastic. A necessary and sufficient condition for consistency is derived for large N but fixed T.     

灰色信息系统中的优势粗糙集模型

文章将一种新的优势关系引入到区间集灰色信息系统中,定义了对象灰度与对象确定度、整体灰度与整体确定度等概念,建立了基于优势关系的粗糙集模型,由此得出一系列相关性质与定理,最后用一实例进行了说明。     

Exploring the consequences of a recalibration of causal conditions when assessing sufficiency with fuzzy set QCA

The use of Charles Ragin’s Qualitative Comparative Analysis (QCA) is increasing in the social sciences. However, some of its characteristics, especially those of its fuzzy set variant, are still not well understood by users. QCA, a set theoretic method, aims to describe, in a Boolean form, the configurations of conditions that are necessary and/or sufficient for some outcome. The calibration of set memberships is a central feature. We discuss how two alternative calibrations of a condition affect the assessment of consistency with sufficiency. Using first an abstract example and then an empirical one from the sociology of education, we explain why “stricter” calibration of conditions results in higher consistency with sufficiency. We demonstrate that conventional truth table analysis is not an ideal way to compare the analytic consequences of alternative calibrations and therefore employ an alternative which allows a more direct comparison of consistency indices while keeping comparative configurational contexts intact.