The density of social networks moderates effects of intergroup contact

This study tests how the density of the social network in which intergroup contact takes place might affect the extent to which contact improves intergroup attitudes. Having contact with more outgroup members in dense social networks, in which everybody knows each other, may reinforce contact's positive effect. In this case, outgroup contact is shared with ingroup members, which suggests positive ingroup norms toward the outgroup. Alternatively, more contact in denser networks may improve intergroup attitudes less because density may increase subtyping or reduce the salience of ethnic group memberships. These competing hypotheses are tested among white American adults in a nonprobability online sample (N = 305) and in a representative national sample (N = 1270). In both studies, contact is associated with more positive attitudes toward racial outgroups but the positive contact effect is weakened if that contact takes place in a denser social network.     

论强国富民离不开美育

美育有助于提高生产力.从社会的发展趋势来看,美育和科学技术愈来愈紧密地融合.美育和科学技术融合有深厚的理论基础.培养人才离不开美育,美育和创造性人才有内在的心理联系.将美育真正融入学校、家庭、社会,全面提升学生素质是切实可行的.     

Simulation of Fragment Impact on Multi-Layer Targets Using Contact Method

Cased explosives generate highly energetic fragments as their casing breaks up. Due to the complexity of casing fragment related behavior such as embedment, perforation and ricochet, it may be insufficient to use equivalent triangular pressure loading in fragment impact simulations. This simplified method may over- or under-predict the target response. Recently, a procedure using contact techniques has been proposed to overcome such difficulties. It has been shown that the new method has the inherent capability in modeling the multi-piece and multi-hit fragment impact problems in a more realistic way. To investigate the applicability of the proposed method to simulations involving multi-layer penetration, the selected problems of fragment impact on multi-layer targets are described in this paper. It is demonstrated that this method is capable of predicting the complicated multi-layer structural response caused by fragment impact and penetration. Modeling procedures and some technical issues are also discussed.     

好氧生物处理实验的研究

介绍了具有代表性的好氧生物处理的两个典型实验的方法,讨论了作为研究生阶段开设这两个实验的具体的实验内容以及最佳运行方案。     

保险合同中违反告知义务的构成要件分析

保险合同中违反如实告知义务的构成要件是：违反如实告知义务的主体是投保人或被保险人；违反告知义务的范围仅限于保险人询问的范围；过失违反告知义务的事实应当是重要事实；投保人、被保险人违反告知义务是出于主观上的故意或过失。     

《史记》中所见的关中方言词语

《史记》中采用了大量方言,特别是关中方言词语。在前辈时哲的基础上摭拾“禳”、“刳”、“傭”等6个《史记》中所见的关中方言词语,从民俗等角度进行考释,并从共时平面分析关中方言对宁夏南部山区方言的影响,对《史记》词汇的研究和汉语方言的研究有一定的价值。     

啤酒工业废水处理工艺进展及比较浅析

分析了啤酒工业废水的来源和性质特点,从厌氧、好氧生物处理两方面介绍了啤酒废水处理的主要技术及应用效果,并浅析了5种较成熟的啤酒废水处理工艺流程 最后,对未来的治理方向提出了几点建议     

吴语处州方言豪肴二韵的分合

通过实地调查，运用地理语言学的研究方法，平面揭示吴语处州方言豪、肴二韵的语音特点，并对其历史层次进行分析。处州方言豪、肴二韵的今读状态，是其自身演变和受外来方言影响的结果。     

五十年来青海汉语方言研究述评

本全面系统地评述了五十年来青海汉语方言研究的进展情况。认为五十年来青海汉语方言研究具有从无到有的开创性质，参加人数不算少、论数量也不算少、内容涉及面也不算窄，但比起兄弟省市来看，相当滞后。目前存在一些亟待解决的问题，诸如：培养后继队伍的问题；缺乏方言研究的组织领导和专门研究机构问题；如何将研究内容引向纵深的问题等等。     

论地理教学中的学科横向联系

地理学科综合性、边缘性、现实性的特点, 使地理知识与其他学科有广泛的联系, 使地理教学中的学科横向联系成为必然。以地理教学为平台, 加强学科知识间的渗透融通, 对学生发展综合的思维能力、形成有机的知识体系、适应新的高考形势具有积极的作用。