社会资本、融资结网与企业间风险传染——浙江案例研究

以往的社会资本研究大多关注于积极效应,较少提及其可能的负面效应。本文通过案例研究方法,以浙江的绍兴和台州为研究对象,分析了社会资本、融资风险网络结构和风险传染之间的关系,为社会资本负面效应的理论研究提供了实证支持。研究发现,高社会资本会提高融资风险网络的平均中心度,降低网络破碎程度,并会致使网络凝聚程度提升,进而加剧企业间风险传染。据此,本文从社会资本角度对发生于我国实体经济中的风险传染现象做出了理论解释。     

Neighborhood-based uncertainty generation in social networks

Imprecision, incompleteness and dynamic exist in a wide range of network applications. It is difficult to decide the uncertainty relationship among nodes since traditional models are not meaningful in uncertain networks, and the inherent computational complexity of the problems with uncertainty is always intractable. In this paper, we study how to capture uncertainty in networks by transforming a series of snapshots of a network to an uncertain graph. A novel sampling scheme is also proposed which enables the development of efficient algorithms to measure uncertainty in networks. Considering the practical aspects of neighborhood relationship in real networks, a framework is introduced to transform an uncertain network into a deterministic weighted network where the weights on edges can be measured by Jaccard-like index. The comprehensive experimental evaluation results on real data demonstrate the effectiveness and efficiency of our algorithms.     

东北地区社会保障适度水平分析

本文应用社会保障水平理论与适度水平测算模型 ,对东北三省社会保障支出水平的适度性问题进行了系统分析 ,得出基本结论即保障水平偏低且结构不合理。在此基础上 ,从东北社会保障体制中的缺陷出发分析造成保障水平现状的原因 ,并应用社会保障水平供求平衡理论和社会保障水平效率标准 ,提出了完善社会保障水平的建议和措施。     

中国柯尔克孜族人口变迁、分布及特点

柯尔克孜族是一个原生跨界类跨国民族,中国境内的柯尔克孜族77.4%分布在新疆的克孜勒苏柯尔克孜自治州境内,是我国少数几个仍然以畜牧业为主的民族。柯尔克孜族的人口发展和变迁具有自己的一些特点。在与世界接轨的今天,柯尔克孜族和我国所有民族一样,正处于艰难的人口转型之中。     

中国职业技术教育的发展与挑战——基于全国32所职业院校的调查

文章通过对全国32所职业技术院校的深入调研,分析、总结了中国职业技术教育的发展现状。研究表明,目前中国职业技术教育在发展中存在着社会歧视、资金“瓶颈”、教师素质欠缺、学生能力建设不足和就业服务不到位等问题与挑战。在此基础上,作者进一步探讨了中国职业技术教育可持续发展的战略路径,并提出相应的政策建议。     

产业结构与城市化:美国的“去工业化”和“再城市化”现象及其启示

美国 2 0世纪产业结构变化的突出现象是“去工业化”和与信息产业相关的新兴产业的崛起。伴随产业结构变化 ,人口区域分布也经历了“非都市转折”和“再城市化”的过程。产业结构的变化是城市兴衰的决定性因素。对我国来说 ,重视城市化发展过程中的产业支撑 ,根据区域发展格局的调整和产业结构的演进实施不同的城市化发展模式 ,尤为重要。     

The pattern of birth spacing during Taiwan's demographic transition

This paper considers the impact of an extended family structure on the fertility behavior of married women in Taiwan. A sequential duration model is applied to identify the differences in fertility behavior during the early and latter stages of a woman's reproductive period. Heterogeneity adjustments which correct the respondent-specific characteristics are also implemented. It is found that living with the husband's parents has an impact on the wife's fertility only at the early stage of her childbearing period, and that the subjective son preferences together with the objective fact of no son in the previous 2 births do force a wife to expedite her third birth. These results are robust across different cohorts during the demographic transition and under different specifications of hazard functions. We thank an anonymous referee for his or her valuable comments and suggestions. Responsible editor: Junsen Zhang.     

Coresidence With Elderly Parents: A Comparative Study of Southeast China and Taiwan

Using recent survey data from the Panel Study of Family Dynamics (PSFD) on 1,655 married persons born in 1964-1976 in southeastern China and Taiwan, we studied coresidence with elderly parents using a multinomial probit model for coresidence type and an ordered probit model for residential distance. The study yielded four findings: (a) Patrilocal coresidence was more prevalent in Taiwan than in China; (b) matrilocal coresidence was more prevalent in China; (c) practical factors mattered in both places; (d) in Taiwan only, a couple's economic resources facilitated breaking away from patrilocal coresidence. The findings suggest that, although economic development does not necessarily result in less traditional familial culture, personal economic resources may enable individual couples to deviate from tradition.     

京津滨产业带战略性新兴产业发展与布局研究

一、京津滨产业带是京津冀产业发展的主体京津塘高速公路开通以来,带动了沿线城镇和产业园区的发展,形成了一个带形发展区域。笔者认为,目前从北京、天津到天津滨海新区的沿线地区已经发展成为一条全新的产业带———京津滨产业带。