“风险”中的男客:关于风险感知与行动的多维度理解

将社会学、心理学、人类学视角应用到对性产业中男客风险感知与应对的研究中。在其风险感知中,对家的秩序的维护,推动男客主动选择和建构性病的风险;在风险管理中,直观思维、时空脱域和对本土医疗资源的熟悉,构成个体层面对风险的心理解读。而宏观上,有限的抽象思维能力、快速的社会变迁、生涩的本土健康服务,将这一群体置于风险的社会结构之中。     

Too Scared or Too Capable? Why Do College Students Stay Away from the H1N1 Vaccine?

Although college students were among the populations that had the highest frequency of infection for H1N1 influenza, only 8% of them received H1N1 vaccine this past flu season nationwide. During the peak of this pandemic, information about H1N1 vaccine was widely available. However, knowledge test and behavioral data indicated that most college students were not equipped with basic facts about H1N1 and the H1N1 vaccine. To investigate socio‐psychological factors that might have deterred this high‐risk population from learning about and getting the H1N1 vaccine, this study tested the utility of a risk information seeking model in addressing this health communication problem. Data collected from an online survey of 371 college students showed that respondents seemed to overestimate how much they knew about the vaccine. Risk information seeking, however, positively influenced their intentions to get the vaccine. Results suggested that to communicate effectively to this population, it is important to emphasize the difference between perceived knowledge and actual knowledge, monitor emotional responses to potential risks, and promote getting flu vaccination as a socially desirable behavior.     

Composite quantile regression for massive datasets

Analysis of massive datasets is challenging owing to limitations of computer primary memory. Composite quantile regression (CQR) is a robust and efficient estimation method. In this paper, we extend CQR to massive datasets and propose a divide-and-conquer CQR method. The basic idea is to split the entire dataset into several blocks, applying the CQR method for data in each block, and finally combining these regression results via weighted average. The proposed approach significantly reduces the required amount of primary memory, and the resulting estimate will be as efficient as if the entire data set is analysed simultaneously. Moreover, to improve the efficiency of CQR, we propose a weighted CQR estimation approach. To achieve sparsity with high-dimensional covariates, we develop a variable selection procedure to select significant parametric components and prove the method possessing the oracle property. Both simulations and data analysis are conducted to illustrate the finite sample performance of the proposed methods.     

多元主体视角下的学前教育质量评价

学前教育质量评价是提高学前教育质量的有效途径，但我国尚未建立起客观地评价学前教育质量的标准和体系。学前教育质量评价具有复杂性和多元性，牵涉到内部和外部的众多利益相关者，因而建立多元主体视角下的学前教育质量评价体系，对提高我国学前教育质量至关重要。学前教育的内部评价主体包括幼儿和教师，而外部的评价主体则包括政府部门以及家庭和社区。实施基于多元主体视角的学前教育质量评价能充分反映各方的利益和需求，具有较好的实践和操作意义。     

鲜活水产品双渠道供应链定价与新鲜度研究

构建了一个鲜活水产品的双渠道供应链模型,建立了集中决策和分散决策下的决策模型,并通过分析水产品的销售价格和新鲜程度间的关系,发现集中决策模型的销售价格和新鲜程度均高于分散决策.最后通过数值算例分析验证了结论.     

Affiliation networks with an increasing degree sequence

Affiliation network is one kind of two-mode social network with two different sets of nodes (namely, a set of actors and a set of social events) and edges representing the affiliation of the actors with the social events. Although a number of statistical models are proposed to analyze affiliation networks, the asymptotic behaviors of the estimator are still unknown or have not been properly explored. In this article, we study an affiliation model with the degree sequence as the exclusively natural sufficient statistic in the exponential family distributions. We establish the uniform consistency and asymptotic normality of the maximum likelihood estimator when the numbers of actors and events both go to infinity. Simulation studies and a real data example demonstrate our theoretical results.     

在公正与效率之间:证人出庭作证制度的困境和出路

证人出庭作证问题,涉及证明标准与法律假设、法律规则与法律标准、诉讼效率与诉讼成本、自利偏见与社会效应等诸多方面。证人不出庭作证的规范依据仍然存在、证人出庭作证的权利和义务不对等、配套措施不完善等原因,导致证人不愿意出庭。美国辩诉交易制度在很大程度上减少了开庭刑事案件的数量,其关于书面陈述的规定也减少了证人出庭作证的需求,在一定程度上实现了被告人人权保护和公共利益的平衡,值得借鉴。完善证人出庭作证制度,应以案件"客观需要"为标准,以追求事实真相为出发点,以人权保护和人性回归为落脚点,遵循限制性处罚原则和禁止利益冲突原则,提高相关规定的可操作性。因此,不宜盲目追求证人高出庭作证率。     

论《不能承受的生命之轻》中的矛盾哲学

矛盾是一个普遍存在的哲学命题,也是很多经典文学作品中的一个重要母题。在世界文学大师米兰·昆德拉的代表作《不能承受的生命之轻》中,存在着多组对立统一的矛盾,其中包括轻与重、肉与灵、偶然与必然、梦境与现实以及谎言与真实。这些多元共生的矛盾体相互作用,它们的对立、转化和消解推动了情节的发展,也加深了作品的哲学内涵。通过分析这些矛盾体,可以从中管窥出昆德拉的许多哲学理念,这对于研究他的创作与思想有着重要意义。     

企业核心人才流出问题浅析

企业核心人才的流出不仅对员工个人、企业 ,而且对社会 ,也会产生一定的影响。因此 ,要解决此问题 ,企业首先要树立良好的企业形象 ;其次要做好服务和引导工作 ,为他们提供一个良好的工作环境 ,而非采取一些逼迫性的强制措施     

二元实函数与复变函数的关系

结合二元实函数和复变函数的概念以及性质,分别从连续性、可导性、可微性、解析性方面讨论了二者的联系,并举例说明二者的关系.