线偏振光电矢量与入射面有夹角入射时的偏振态

讨论线偏振光入射 ,其电矢量与入射面有夹角 (该夹角称线偏振光的振动方位角 )时 ,反射光与折射光的偏振态 ,以及在全反射条件下 ,反射光的偏振态和获得圆偏振光的条件     

光纤扭转对循环延迟线偏振控制系统特性影响的研究

借助模式耦合理论和矩阵光学的知识,对引入光纤扭转机构后的延迟线偏振控制系统的偏振转换特性进行了分析,推导出了描述该系统偏振特性的琼斯矩阵,得到了光纤扭转对系统偏振特性影响的理论模型。     

就近半城市化与去城市两级分化

农民以家庭为单位普遍选择的就近半城市化路径中,人口迁徙具有可逆性：一是从城市回流到农村的可逆性,二是从大城市回流到中小城市的可逆性。这两种可逆性勾勒着我国城市化进程中的“去城市两极分化”机制：类贫民窟作为物理载体仍然会在城市化的过程中存在,但在可逆过程中,它并不会形成一个刚性的城市社会贫民阶层,进而这种可逆性成为城市社会两极分化结构中的弹性要素;特大城市也会产生,但在可逆的过程中,作为纯资源接受者的中小城市将获得人口集聚和经济发展的契机,从而这种可逆性也构成了城市体系两极分化结构中的弹性要素。     

Measuring Social Tension from Income Class Segregation

We develop an index that effectively measures the level of social tension generated by income class segregation. We adopt the basic concepts of between-group difference (or alienation) and within-group similarity (or identification) from the income [bi]polarization literature; but we allow for asymmetric degrees of between-group antagonism in the alienation function, and construct a more effective identification function using both the relative degree of within-group clustering and the group size. To facilitate statistical inference, we derive the asymptotic distribution of the proposed measure using results from U-statistics. As the new measure is general enough to include existing income polarization indices as well as the Gini index as special cases, the asymptotic result can be readily applied to these popular indices. Evidence from the Panel Study of Income Dynamics data suggests that, while the level of social tension shows an upward trend over the sample period of 1981 to 2005, government’s taxes and transfers have been effective in reducing the level of social tension significantly.     

中国快递业发展的区域不平衡性测度研究

选取大陆31个省份2007—2014年样本数据,分别测算三区域、八区域分组下快递业发展的不平衡性及极化趋势。研究结果表明:中国快递业发展存在较强的区域不平衡性,且这种不平衡性还呈现不断加大趋势;东中西快递业发展不平衡性明显,总体呈现东部强中西部弱的特点,基尼系数分解结果显示,东中西组间差异为不平衡性贡献了70%以上的份额,同时东部和西部地区内部也存在相当程度的不平衡性;八区域不平衡性也非常明显,总体呈现沿海强内陆弱、东强西弱、南强北弱的基本格局,组间差异贡献了88%左右的份额,就区域内而言,南部沿海和西北地区不平衡性较强,东部沿海、长江中游及东北地区则较为平衡;三区域及八区域分组下快递业不平衡发展均呈现出不断增强的极化趋势。     

An Experiment on the Social Facilitation of Gambling Behavior

Research and theory regarding the social facilitation effect generates the expectation that the presence of other gamblers (or co-actors) in a gaming venue is likely to intensify individual gambling behavior and magnify losses. Fifty male and 66 female participants (116 total) played a computer-simulated electronic gaming machine with a fixed winning sequence, followed by an indefinite losing sequence. Measures of the intensity of gambling behavior included the final payout (a direct measure of losses), average bet-size, number of trials played, and the speed of play. Some participants received false feedback from the computer designed to suggest that other gamers in adjacent rooms were playing and sometimes winning at the same game. Persons who received both sight and sound information, including winning bells and instant messages regarding the wins of other (fake) players, placed more bets and lost more money compared to the other conditions with less information.     

Child protection decision-making

The effects of interagency collaboration on risk assessment in child protection practice were analysed in respect of the decision-making processes in child death inquiries. Universal features in the assessment of risk as identified in psychological literature were applied; in particular, the concepts of ‘groupthink’, the ‘certainty effect’ and ‘group polarization’. It is suggested that case conference decisions are inherently more risky than those taken by professionals with individual responsibility because of the way in which cases are framed in terms of losses.     

社会工作两极化趋势及专业定位的反思

社会工作专业从产生之初就产生了两极化的趋势,即萌生于慈善组织会社的注重提供个人服务的取向和产生于睦邻组织的注重环境的改造及建立共同利益的取向。Spetch和Courtney在《背叛的天使》一书中批判了社会工作者心理治疗化的现象,认为社会工作者是背叛的天使,远离了自己的服务对象,背叛了社会工作的使命。本文通过回顾社会工作两极化产生的历史,分析社会工作心理治疗化的原因及限制,同时通过回顾中国大陆社会工作产生的背景,反思社会工作专业化的定位。     

热点公共事件群体极化：表征、影响及其应对

作为舆情异化的热点公共事件群体极化,具有蔓延负面情绪、筑设思维壁垒、滋生集体暴力等系列表征,呈现模糊核心议题、消解协商机制、扭曲良性意识、诱发公共危机等负面效应。究其因由,可溯源至信息泛滥作祟、公众心理失衡、社会撕裂激发、政民关系滑坡等不同维度。防范和化解热点公共事件群体极化,须从国家、社会、公民三重视域着手,多管齐下、规制导引,以净化舆论生态、凝聚社会共识。     

领域分化后的道德寓所——兼论公共行政的道德原则

人类社会经历了农业社会和工业社会的历史阶段,现在正处于后工业化的过程中。在农业社会,社会的一体性决定了它的制度是“权制”的,它的治理模式是“权治”的,道德的因素在不同的社会阶层中会有着不同的要求和表现。工业社会是一个社会分化的过程,特别是领域的分化,把道德主要限制在日常生活领域之中。私人领域也要求道德的支持,但是,自利的追求往往把道德置于客观结果的位置上。至于公共领域,则是一个非道德的领域。在后工业化的进程中,出现了领域的融合,从而为普适性道德的出现提供了历史前提,也为在道德发展最新成果的基础上进行道德制度和德治体系的设计提供了契机。