基于局部社团结构平衡的双模符号网络链路预测研究

随着互联网产业的高速发展,双模符号网络已经成为一类常见的复杂网络,然而针对此 类网络的分析较少。本文在传统非符号网络局部社团理论和符号网络结构平衡理论的基础上,首次提出了双模符号网络下的局部社团理论。这一理论不仅考虑了符号网络中共同邻居的信息,还引入了共同邻居间存在的连接。进一步地,本文推导出符号网络中基于局部社团信息的加权平衡回路增益指数,该指标可以表示双模符号网络中用户节点和产品节点间的符号关系。为了将该指标更好地应用于双模 符号网络链路预测问题,本文提出了加权平衡回路增益分类器算法。实验结果表明,相比其他经典链路预测算法,新算法具有更好的预测能力。     

Network diversity,contact diversity,and status attainment

We propose that diversity in social relations measured by network diversity and cross-race/cross-gender contacts affords job seekers higher contact status that in turn brings better status attainment outcomes. Controlling for traditional strength of tie measures and other confounders, the empirical study confirms that (1) network diversity in race and gender are significantly associated with actual utilization of cross-race/cross-gender contacts in job search, (2) use of cross-race/cross-gender contacts is significantly related to higher contact status for nonwhite and female job seekers, but (3) contact status (activated social capital) partially provides jobs of higher SEI scores for white job seekers. Similarly, male job seekers obtain better jobs through female contacts, but the same does not apply to female job seekers. These findings show relative return deficits of social capital experienced by racial minorities and females even when they exert extra effort to obtain heterogeneous social relations and contacts.     

试析新媒介环境下的网络问政

"网络问政"已经成为政府执政的重要补充方式,且作用日益显著。本文界定了网络问政的内涵,分析了网络问政的三种主要形式,并进而对政务微博的发展概况和运用中的关系把握做了尝试性探讨。     

理论与实践:译者的纯语言——以许渊冲《唐诗三百首》为例

许渊冲对诗歌的贡献不仅在于翻译理论,也在于他的翻译实践。根据本雅明对翻译中纯语言的论述,即上帝的语言是纯粹的,人类的语言因带有偏见,是不纯粹的为依据,再次探索翻译理论与翻译实践的关系,以许渊冲唐诗三百首中《送孟浩然之广陵》译文为例,肯定许渊冲的翻译硕果,同时兼顾翻译理论发展与翻译实践的译者的影响力。     

基于图式理论的公安行业英语口语教学策略研究

本文运用图式理论探讨有效进行公安行业英语口语教学的相关策略。     

社交网络时代大学生政治参与及引导机制研究

社交网络时代,网络成为大学生政治参与的新载体,大学生通过社交网络参与政治社会生活积极性高,原因在于:通过网络参与的及时性;同辈交流自由化,长幼交流隐私化;接受信息私己性与自我满足性。因此,可构建大学生网络政治参与引导互动模型,包含动力机制、协调机制、导向机制、效能机制以及交互机制等内容。     

Do resources of network members help in help seeking? Social capital and health information search

Does social capital as resources of network members affect health information search? Analyzing data from the 2004 General Social Survey in the United States, this study measures two social capital indicators (average education of network members and proportion of network members with a high school degree or higher) using the name generator. Most results are consistent using those two indicators. Both indicators are positively associated with frequency of health information seeking and seekers’ frequency of use of two sources (friends or relatives and the Internet). Also average education of network members is positively associated with seekers’ diversity of used sources and frequency of consultation with medical professionals. But neither indicator is associated with seekers’ frequency of use of other four sources (health-related magazines or newsletters, general magazines, daily newspapers, and radio or television programs). The findings demonstrate the theoretical utility of social capital in the social dynamics of medical help-seeking.     

Statistical estimation of internal available bandwidth

This paper presents a method for using end-to-end available bandwidth measurements in order to estimate available bandwidth on individual internal links. The basic approach is to use a power transform on the observed end-to-end measurements, model the result as a mixture of spatially correlated exponential random variables, carryout estimation by moment methods, then transform back to the original variables to get estimates and confidence intervals for the expected available bandwidth on each link. Because spatial dependence leads to certain parameter confounding, only upper bounds can be found reliably. Simulations with ns2 show that the method can work well and that the assumptions are approximately valid in the examples.     

浅析社会工作的结构化过程

本文旨在分析社会工作的运行机制,试图溯源社会工作广泛的主客体关系,借助吉登斯的结构化理论,反思社会工作领域内的多重解释和二元对立,并将社会工作的运行机制归结到结构化的构成之中,在密布资源和规则的结构之中发现充满"实践意识"的行动者,从而感应社会工作发展的脉动。     

Toward a model of school inspections in a polycentric system

Many education systems are developing towards more lateral structures where schools collaborate in networks to improve and provide (inclusive) education. These structures call for bottom-up models of network evaluation and accountability instead of the current hierarchical arrangements where single schools are evaluated by a central agency. This paper builds on available research about network effectiveness to present evolving models of network evaluation. Network effectiveness can be defined as the achievement of positive network level outcomes that cannot be attained by individual organizational participants acting alone. Models of network evaluation need to take into account the relations between network members, the structure of the network, its processes and its internal mechanism to enforce norms in order to understand the achievement and outcomes of the network and how these may evolve over time. A range of suitable evaluation models are presented in this paper, as well as a tentative school inspection framework which is inspired by these models. The final section will present examples from Inspectorates of Education in Northern Ireland and Scotland who have developed newer inspection models to evaluate the effectiveness of a range of different networks.