海外子公司东道国网络结构与网络学习效果——网络学习方式是调节变量吗

本文通过阐明网络位置对网络成员决策和资源获取的影响,提出了"位置嵌入"概念,由此把社会嵌入的"关系一结构"构成理论发展为"关系-位置-结构"构成理论.在此基础上,解析了海外子公司的东道国网络结构,分析了网络学习方式在东道国网络结构与网络学习效果间的调节效应,以123家跨国公司在华子公司为样本的实证检验发现:(1)探索型学习负向调节了关系嵌入强度与网络学习效果间的关系;(2)探索型学习正向调节了网络密度与网络学习效果间的关系;(3)利用型学习正向调节了网络密度与网络学习效果问的关系;(4)利用型学习正向调节了群体中心度与网络学习效果间的关系.     

Designing Referral Network Structures and Decision Rules to Streamline Provision of Urgent Health and Human Services*

This study uses fully factorial computer simulation to identify referral network attributes and referral decision rules that streamline the routing of people to urgent, limited services. As an example of a scenario, the model represents vaccine delivery in a city of 100,000 people during the first 30 days of a pandemic. By modeling patterns of communication among health care providers and daily routing of overflow clients to affiliated organizations, the simulations determine cumulative effects of referral network designs and decision rules on citywide delivery of available vaccines. Referral networks generally improve delivery rates when compared with random local search by clients. Increasing the health care organizations’ tendencies to form referral partnerships from zero to about four partners per organization sharply increases vaccine delivery under most conditions, but further increases in partnering yield little or no gain in system performance. When making referrals, probabilistic selection among partner organizations that have any capacity to deliver vaccines is more effective than selection of the highest‐capacity partner, except when tendencies to form partnerships are very low. Implications for designing health and human service referral networks and helping practitioners optimize their use of the networks are discussed. Suggestions for using simulations to model comparable systems are provided.     

DEA and ranking with the network-based approach: a case of R&D performance

This study enhances the network-based approach, which is a novel method to increase discrimination in data envelopment analysis. The enhancements include removing the bias caused by a scale difference among organizations and highlighting the approach's ability to identify the strengths and weaknesses of each organization. The former makes the approach applicable to both the constant returns of scale (CRS) and the variable returns of scale (VRS) models. The network-based approach applies the centrality concept developed in social network analysis to discriminate efficient decision making organizations as determined by standard data envelopment analysis (DEA). More specifically, the results of data envelopment analysis are transformed into a directed and weighted network in which each node represents a decision making organization and the link between a pair of node represents the referencing relationship between the pair. The centrality value for each efficient organization provides the base for discrimination and ranking. This network-based approach suggests aggregating DEA results of different input/output combinations such that the merits of each organization under various situations can be considered. The final ranking of this approach favors organizations that have their strengths evenly spread and tends to screen out specialized efficient organizations. As a real world example, the approach is applied to evaluate and rank the R&D (research and development) performance of Taiwan's government-supported research institutes. The cross-organizations and within-organization strengths for each efficient research institute are identified after applying the approach. A two-stage R&D evaluation model separates the R&D process into the technology development and technology diffusion stage. The resulting performance map differentiates the research institutes into four categories—Achievers, Marketers, Innovators, and Underdogs.     

奥巴马政府的核政策与朝核问题

第二届首尔核安全峰会的召开,激起国际社会对朝核问题的关注。作为重要的国际核安全问题,朝鲜核问题在美国新的核安全政策中处于何种地位,奥巴马政府将如何处理朝核问题成为国际社会关注热点。本文旨在探讨朝核问题自身的特殊性,分析奥巴马政府核安全政策的本质与内在矛盾,进而揭示美国新的核安全政策仍旧很难解决其在朝核问题上面临的困境。     

网络条件下大学语文课程创新建设研究

网络环境给大学语文课程刨新建设提供了许多便利,利用网络条件,可以开拓教学资源、改进教学方法、创新评价体系、建构新型师生关系,从而将大学语文教改推向深入。     

社交网络对大学生人格和价值观的影响

以建立和维系社会关系为目标的社交网络,特别受到当代大学生的青睐,从国外的Twitter、Facebook、MSN,到国内的实名认证的人人网、拥有庞大用户的腾讯QQ、热火兴起的微博,都是大学生们常常用到的社交网站。人们运用社交网络来维系社会实体关系、展现自我个性、表达利益诉求,随着社交网络在大学生生活中扮演的重要性的逐日提高,对当代大学生的人格和价值观也产生的一些影响,值得我们分析、重视。     

博客环境下大学英语过程写作实证研究

本文基于英语过程写作理论,借助博客带来的技术与资源优势,对博客环境下写作能力的培养模式进行了教学实践探索,同时利用SPSS16.0对试验组和控制组学生在写作教学试验推行前后的英语写作情况进行了统计分析。结果表明,本文设计的大学英语写作教学模式有助于大学英语写作能力的培养和水平的提高。     

转型期我国社保基金的增值机制与路径选择

转型期我国社保基金的运行状况不容乐观,必须遵循渐进和配套完善的原则进行改革.加拿大CPPIB的运作模式因其优良的效果和完善的机制不失为我国社保基金运作的一条改革路径.据此,笔者认为,根据国际经验以及我国的实践,我国社保基金投资宜选择投资指数基金.原因在于,一方面可以有效降低运行成本,另一方面有利于管理层的监督,从而确保社保基金对安全性和盈利性的双重要求.     

中国雾霾污染的空间关联研究

本文利用非线性Granger因果检验识别了中国279个城市间雾霾污染的空间依赖关系,结合多样化的网络分析方法与滚动窗口技术揭示出雾霾污染空间关联的整体特征与微观模式,进而基于指数随机图模型考察了雾霾污染空间关联的影响因素及作用机制。研究发现：样本城市间普遍存在雾霾污染依赖关系并且这种空间关联的紧密程度逐渐上升,近年来中国大范围雾霾污染的频繁爆发与雾霾污染区域性特征的日趋强化密切相关。除了自然因素之外,人类经济社会活动在雾霾污染空间关联的形成中发挥了重要作用。本文的研究结论对雾霾污染及其区域传输的还原论、自然决定论等观点进行了有力的反驳,有助于确立人在雾霾治理中的主观能动性。     

研究性学习信息支持网的建构

信息技术的发展带来了丰富的学习资源和多样化的学习方式,研究性学习与信息网络技术紧密相关.本文从研究性学习的客观要求出发,就如何建构研究性学习信息支持网展开深入研究,研究性学习信息支持网的建构将为"师-生"、"生-生"之间更广泛、方便、及时地进行学术交流提供理想的场所.