异构小蜂窝网络移动性管理研究综述

新一代移动通信网络不断演进为高密集、无定型、立体分层的异构网络,移动性管理旨在保证用户设备（user equipment,UE）移动通信服务的连续性和无缝切换及降低信令开销等。移动性管理问题正成为异构小蜂窝网络（heterogeneous and small cell networks,HetNets）中无线资源管理需要应对的关键性挑战之一。阐述了移动性管理的一般性问题,根据移动性管理的主要特征给出了一个综合分类：整体切换性能增强、小蜂窝发现与识别增强和无线链路失效（radio link failure,RLF）恢复增强。此外,依据此分类对近年来第三代合作伙伴计划（3rd genera-tion partnership project,3GPP）成员在无线接入网（radio access network,RAN）标准化工作组历次会议中提出的主要移动性管理增强方案进行了分类阐述和性能对比。对异构小蜂窝网络的移动性管理所面临的挑战和未来研究的趋势进行展望,并在此基础上进行了总结。     

中国政治传播学研究：回顾与展望

中国政治传播学研究在政治传播学学科基本理论、政治传播的范畴和个案研究方面取得了不少成果。提出了相应的理论观点。学者们对政治传播学的研究,初步构建了中国政治传播学学科体系,拓展了政治学研究领域和方法,也为促进政治发展作出了应有贡献,但还存在着体系不完善、理论高度不够和基本概念不清晰、研究方法有待拓展等问题。政治传播学有重要的研究价值,学术界应在构建本土化的政治传播学科、网络政治传播和国际政治传播等方面深化研究。     

经济政治学:政治-经济关系研究的新视角

经济政治学是政治学与经济学相互渗透融合的产物,是经济的政治学,它既研究经济现象中的政治问题,也研究政治现象中的经济问题,揭示经济现象与政治现象之间的本质联系。经济政治学以政治与经济之间的互动关系为其研究的出发点和目的,它倡导一种动态平衡的经济政治观。与传统的政治学相比较,经济政治学是思考角度、思维模式的一种转换,是在政治学领域确立经济理性和经济价值的变革,也是综合运用经济政治分析方法研究政治问题的一种尝试。     

A comparison of network sampling designs for a hidden population of drug users: Random walk vs. respondent-driven sampling

Both random walk and respondent-driven sampling (RDS) exploit social networks and may reduce biases introduced by earlier methods for sampling from hidden populations. Although RDS has become much more widely used by social researchers than random walk (RW), there has been little discussion of the tradeoffs in choosing RDS over RW. This paper compares experiences of implementing RW and RDS to recruit drug users to a network-based study in Houston, Texas. Both recruitment methods were implemented over comparable periods of time, with the same population, by the same research staff. RDS methods recruited more participants with less strain on staff. However, participants recruited through RW were more forthcoming than RDS participants in helping to recruit members of their social networks. Findings indicate that, dependent upon study goals, researchers' choice of design may influence participant recruitment, participant commitment, and impact on staff, factors that may in turn affect overall study success.     

The dual contingencies of ethnoraciality: Status-context disparities in health information sources among sexual minorities

Researchers often explore health (care) beliefs as a function of individual characteristics; yet, few consider the role of context in shaping both beliefs and the behaviors that are informed by them. As a sociopolitical construct, ethnoraciality provides a concerning source of bias in studies of health (care) beliefs because it inhabits both individual and contextual forms. This study examines whether the ethnoracial context of the residential area where sexual minorities live is associated with a particular health (care) belief – sources of trustworthy health information – and considers how ethnoracial group membership status differentiates these ecological associations drawing on mediation and moderation models. Using data from the 2010 Social Justice Sexuality Project, our analysis shows that sexual minorities who live with high concentrations of Latinos and Whites are less likely to rely exclusively on medical professionals for trustworthy health information than those who live with high concentrations of Blacks. Moreover, exclusive reliance on medical professionals for health information among Black and Latino sexual minorities is stronger in co-ethnic communities (predominately Black and Latino areas, respectively). The analysis also documents status and contextual differentials and status-context contingencies of reliance on the Internet, social networks, and multiple agents (“triangulation”) as sources of health information. Findings suggest that place-based co-ethnic networks may facilitate disease prevention among Black and Latino sexual minorities by improving the quality of their relationships with sick role gatekeepers and breaking down the silos of the medical complex. The study concludes by considering the value of a place-based approach to alleviating health disparities among sexual minorities vis-à-vis the health care system.     

Also on the Attitude,Position and Methods of Sinology:Comments on Liang Tao's Sinological View of Confucian Theory of Great Harmony

Mr.Liang Tao recently wrote an article the attitude,position and methods of Guoxue(国学)study:Comments on Mr.Liu Zehua's 'Guoxue view' of Royal power doctrine ,which was published in the Guoxue edition of Guangming Daily,December 7,2009.As Liang's article involved the question how to think about the current Guoxue hot,     

Resources,homophily, and dependence: Organizational attributes and asymmetric ties in human service networks

This paper examines the effects of organizational attributes on power/dependence relations in interorganizational dyads. Exchange and homophily theories are discussed as two alternative perspectives on the processes that give rise to such effects. The data pertain to interagency ties in three community-based networks of youth service agencies and are analyzed via a new strategy of linear modeling dyadic relations. The results of the analysis suggest that size, administrative position, and justice system connections condition the extent to which an agency initiates and receives ties of influence, assistance, and support. Moreover, these relations are more frequent between agencies with similar treatment ideologies and client racial makeup. Finally, size and justice system access are found to reduce agency dependence on a network's administrative core. In the course of the discussion, a number of related issues and findings are discussed.     

“社区支持农业”模式的可持续发展研究

工业化的发展导致了农业模式发生了根本性的改变,同时,也给我们带来了生态、环境、食品安全、诚信、健康等诸多可持续发展问题。社会的发展总是在冲突当中前行的,解决好工业化特征的农业发展问题是我们获得可持续发展的根本途径, "社区支持农业"模式的产生与发展为我们提供了一种很好的思路。文章就"社区支持农业"模式的可持续发展问题解释了农业模式转型发展的内在涵义,提出了在发展工业化农业模式的同时,必须注重生态农业模式发展的观点,二者缺一不可。     

自由意志与道德判断的实验研究

自由意志与道德判断问题是西方哲学中最古老、最有争议的热点问题之一。近年来学者们开始采用实验方法,考察普通民众在自由意志与道德判断上的相关直觉,并围绕初步结果进行了讨论,提出了一些解释。虽然哲学家们对这类实验研究的局限性和重要性仍然存在争议,但它显然对自由意志与道德责任的哲学讨论具有重要意义。     

墨家语义学思想初探

语义问题是人们认识事物、交流思想和表达情感的基本问题。墨家创造了中国古代逻辑最高成就,初步探讨了语义学基本问题。他们讨论了符号与指称关系,语词和语句的意义,注重对语义解释方法的提炼和运用。     

神经网络计算与生物神经活动

讨论了生物神经网络活动对神经网络计算的启发:神经元在大脑皮层上的拓朴结构,启发了多层神经网络计算;神经元的显微结构以及神经元的活动方式,启发了神经网络计算中权值矩阵的运用;神经活动的联想假说,启发了神经网络中的联想计算。     

网络行为的若干道德评价难题

网络行为是人在智能时代的普遍行为方式,网络伦理是使网络行为文明化的道德规范。网络空间与现实世界之间既相关联又区别很大,这使得网络行为所面临的伦理问题既新颖又复杂。从网络行为中所包含的基于元伦理的善恶难辨,到基于效果论和义务论的原则悖反,再到基于道德主体不同的角色冲突,都是网络行为道德评价中所面临的难题,也是建构网络伦理、导引网络文明行为而需要加以深入探讨并寻求基本共识的重要问题。     

The ‘friendship dynamics of religion,’ or the ‘religious dynamics of friendship’? A social network analysis of adolescents who attend small schools

Longitudinal social network data on adolescents in seven schools are analyzed to reach a new understanding about how the personal and interpersonal social dimensions of adolescent religion intertwine together in small school settings. We primarily address two issues relevant to the sociology of religion and sociology in general: (1) social selection as a source of religious homophily and (2) friend socialization of religion. Analysis results are consistent with Collins’ interaction ritual chain theory, which stresses the social dimensions of religion, since network-religion autocorrelations are relatively substantial in magnitude and both selection and socialization mechanisms play key roles in generating them. Results suggest that socialization plays a stronger role than social selection in four of six religious outcomes, and that more religious youth are more cliquish. Implications for our understanding of the social context of religion, religious homophily, and the ways we model religious influence, as well as limitations and considerations for future research, are discussed.     

PPE的历史机缘及其时代任务——新文科建设的三大转向

PPE作为一门跨学科专业蕴含着20世纪以来世界高等本科教育改革中的三大转向:从传统到现代的转向;从单学科到多学科、交叉学科、跨学科的转向;从纯知识探究到知识与能力并重的转向。高等学校新文科建设必须更为关注理解和解决现实世界问题、更加重视多学科和跨学科的知识交叉、更有效地提高培养人才的理论素养和实践能力。新文科的"新"在于能否将其建设为多学科互补的知识平台和学科交叉的创新过程。     

Peer influence on protest participation: Communication and trust between co-workers as inhibitors or facilitators of mobilization

In this article, we investigate how communication and trust networks between employees affect participation in a strike. We analyze whether the strength of network relations is related to congruence in strike behavior using social network data on 59 Dutch workers. We find that private communication networks and trust networks lead to similar strike behavior. This finding indicates that networks not only promote protest mobilization but are also vehicles for demobilization, albeit through different network relations.     

Gender and homosexuality attitudes across religious groups from the 1970s to 2014: Similarity,distinction, and adaptation

This study uses General Social Survey data to compare gender and homosexuality across American religious groups from the 1970s to 2014, examining three possible patterns for how evangelical attitudes relate to those of other groups: (1) they are similar; (2) they are different, but move together over time; (3) they are different and converge or diverge over time. Evangelical gender attitudes regarding work and family issues are more conservative than those of all other groups, but are adaptive to broad trends, changing at a rate similar to those of other groups. Evangelical attitudes toward the morality of homosexuality and same-sex marriage are more conservative than those of all other religious groups, and their rate of change is slower over time. Separate trends on the two issues suggest that gender and sexuality attitude change is decoupled, especially among evangelicals who are adapting more on gender while increasingly distinguishing themselves on same-sex relationships. A three-stage process of religious tension appears to characterize evangelical identity-building: (1) similarity, (2) distinction, and (3) adaptation.     

农村旅游景观设计浅探

本文从景观设计的相关定义人手,逐步谈论了农村旅游景观设计的要点、原则、一般程序、方法、相关技术指标（参数）等,阐述了如何设计旅游景观和如何利用景观发展旅游的一些方法和技术性问题,可资相关部门制定政策时参考,     

概念隐喻在英汉经济语篇中的共时对比研究

本研究以英汉经济语篇为研究对象,,基于自建语料库、运用共时对比、定性和定量相结合的方法总结归纳共享的隐喻模式,分析隐喻对理解抽象经济概念的作用,挖掘两种语篇中隐喻异同的深层次文化根源。研究表明,概念隐喻普遍存在于两种语篇中,相似和相异的的隐喻模式分别体现了人类思维的共性和差异性。这种思维共性和差异性的深层次根源分别在于文化的趋同性和差异性。研究结果对英、汉经济语篇的学习有重要的启示作用。学习者如能在学习经济语篇时有意识地运用隐喻思维,将零散的语言现象通过隐喻组织起来,形成语义网络,找出规律性,可以从宏观和整体上很好地把握语篇的脉络,更好地理解隐喻的意义,深入地了解某一时期的经济、社会问题。     

从拉美改革看我国社会主义和谐社会的构建

新自由主义主导下的拉关现代化改革进程出现了国民经济结构失衡、贫富悬殊、失业人口增多、生态环境恶化等一系列问题。拉美与我国同属发展中国家,都在积极探索自身发展模式,拉关国家在发展道路上的一系列经验教训,为我国构建社会主义和谐社会提供了重要启示。