我国城市外来人口社会保障问题研究

研究我国城市外来人口现行的社会保障问题。方法:采用随机抽样中的非概率抽样对北京等14个城市的7000名外来人口的年龄结构、文化程度、职业特征、收入状况和参与社会保险的状况进行问卷调查和统计,用SPSS软件进行相关性分析。结果:我国城市外来人口以青壮年为主,从业范围集中在制造、建筑等行业;外来人口养老、医疗、工伤、失业、女职工生育保险的参保率分别为13.3%、28.5%、31.1%、8.8%、0%。结论:我国城市外来人口各类保险的购买率普遍偏低;参保率与社会保险制度、企业因素、收入水平和外来人口自身等因素之间具有显著的相关性(P<0.01)。     

安全情报概念的由来、演进趋势及涵义——来自安全科学学理角度的思辨

[目的/意义]安全问题是当前国家、政府、企业、社会、大众及学界广泛关注的一个重要现实问题，而安全情报是保障安全的必用之宝，故安全情报研究具有十分重要的理论与现实意义。[方法/过程]运用文献分析法和思辨法，从安全科学学理角度出发，论证基于安全科学视角解读与界定安全情报概念的必要性、重要性与紧迫性，探讨安全情报概念的由来与演进趋势，并分析安全情报的涵义。[结果/结论]从安全科学学理角度看，从安全信息到安全情报的安全管理新认识是提出安全情报概念的根本动力，安全情报概念的总体演进趋势是从分散到统一。同时，从系统安全学角度看，安全情报是指所有影响系统安全行为的安全信息。     

印度嫁妆制度的嬗变

印度从20世纪中期以来就开始了一次次的婚姻家庭法改革。但是在传统习俗的束缚、宗教私法的干涉和印度教原教旨主义的影响下,总是屡屡受挫,它决心消除的嫁妆制度不但依然存在,反而在有些偏远地区愈演愈烈。本文按照时间顺序梳理了印度嫁妆制度的由来与历史嬗变,旨在增加人们对印度文化中这一怪诞现象的认识,唤起人们对印度女性婚姻家庭地位的关注与同情。     

The effect of television viewing on ethnic prejudice against immigrants: A study in the Italian context

Television viewers construct many different meanings from the programs they watch. Here, we investigated whether ethnic prejudice is differentially influenced by the genre of television programs in their portrayal of ethnic minorities. We also wanted to determine whether a higher educational level reduces ethnic prejudice and television use. A self-reported questionnaire was administered to 401 Italian adults. Structural equation modeling was used to analyze the relationships between ethnic prejudice and television program contents and educational level. Viewing Reality and Variety Shows was positively related to ethnic prejudice, News and Public Affairs was negatively related, and Films and TV series had no apparent influence on prejudice. Educational level was negatively related to both ethnic prejudice and watching Reality and Variety Shows, and positively related to viewing News and Public Affairs and Films and TV series programs.     

4-16世纪中国史家对于社会结构与历史演进的理解

历史认识中人本思想提升的一个理论结果,是史学家、思想家对于包括社会结构与历史演进等理论的思考获得深入。古代中国史学家、思想家对于社会结构与历史演进的理论思考,与早熟、发达的国家制度有关,与古代中国特有的史官制度及其文化形态、史学文化传统也有密切的关系。从公元4世纪到16世纪这1000多年观念的发展来看,史家对于社会结构的认识,大致延续了《史记》、《汉书》的传统,体现了大体一致的对社会结构的认识,即呈天、地、人、政治、经济、刑法、军事、政治制度、选官制度、文化的结构顺序。随着社会的发展,中国的史学家、思想家对于社会结构及其历史演进的理解亦不断深化,尤其是对社会经济及其历史意义的认识更是日益丰富。     

一类时滞双曲型微分方程系统的振动性

建立了一类具有连续分布滞量的双曲型微分方程系统解的振动的若干充分条件 ,并对主要结果举例说明     

四言诗的发展历程和衰落原因

本文通过对四言诗发展脉络的梳理，探讨了四言诗由盛到衰的三方面原因：相对于五、七言诗，它的音节节奏和拍节节奏单一，典重板滞而变化不足；创作过程中，“伤渊雅之致”，失去了四言诗的本色；古代诗体演变和进化的规律的结果。     

Smart structures and materials

A structure is an assembly that serves an engineering function. It is reasonable to expect that all engineering design should be smart, and not dumb. But one can still make a distinction between smartly designed structures and smart structures. The latter term has acquired a specific technical meaning over the last few decades. A smart structure is that which has the ability to respond adaptively in a pre-designed useful and efficient manner to changes in environmental conditions, including any changes in its own condition; the response is adaptive in the sense that two or more stimuli or inputs may be received as anticipated and yet there is a single response function as per design. Smartness ensures that the structure gives optimum performance under a variety of environmental conditions. While structures with some degree of smartness have been designed from times immemorial, the current activity and excitement in this field derives its impetus from the level of sophistication achieved in materials science, information technology, measurement science, sensors, actuators, signal processing, nanotechnology, cybernetics, artificial intelligence, and biomimetics.     

一类Riccati型方程的可积判据

对一类Riccati微分方程引入特征方程的概念，给出了该类方程一个实用的可积充分判撮，从而得到了Riccati地方程的一个新的可积类．     

辐射场的量子化哈密顿正则法

对光学问题进行全量子化处理,必须对辐射场进行量子化.文章用矢势和哈密顿正则方程的方法,将辐射场量子化.