电力系统同步网的建设与思考

数字同步网已经成为了通信网营运的重要支柱之一。针对电力系统通信业务面向市场开放的需求 ,阐述了建设电力系统同步网的重要性 ;研究和分析了同步网中时钟配置、链路选择和同步方式、网络管理等技术问题 ,并对电力系统中同步网的发展提出了一些建议。     

论风险投资的退出机制

风险资本的退出是风险投资运作的最后一个环节,风险投资的成败在很大程度上取决于风险投资家能否成功地退出投资。文章在参考国内外有关文献的基础上,对风险投资退出方式、退出时机、退出程度,以及退出决策进行较为系统的评述,以期促进我国风险投资业的发展。     

Race and Population Change: A Longitudinal Look at Cleveland Neighborhoods

This paper investigates the relationship of racial composition to neighborhood population change from 1910 to 1990 in the Cleveland metropolitan area. To better understand the long-term dynamics of urban neighborhood change, we focus our analysis upon the longitudinal relationship of race, socioeconomic status, and life cycle stage to changes in neighborhood population densities. First, we find that the more established neighborhoods of the African-American community have experienced dramatic declines in population since 1950, a pattern that represents a clear change from the earlier part of the twentieth century. Second, population loss is experienced through a variety of mechanisms, including the demolition of dwellings, the increase in housing vacancy, and the decline of household size. Third, much of this population loss should be interpreted within the context of high economic distress, occurring most frequently in older African-American communities. Over time, economic distress appears to be more important than race in and of itself in leading to the loss of neighborhood populations.     

The transition to parenthood in Puerto Rico: Occupational status and the timing of first births

This study examines the relationship between occupational status and fertility timing during a period of rapid development in Puerto Rico. Our fundamental hypothesis is that women with higher status occupations face greater opportunity costs than those with less valued jobs and therefore will be more likely to postpone parenthood until later ages than women without such high costs. We test this hypothesis using event history techniques with data from the 1982 Puerto Rico Fertility and Family Planning Assessment, an island-wide survey of women between the ages of 15 and 49. The analysis examines the effects of occupational status on the timing of first births, and finds strong support for the basic hypothesis, especially regarding the post-ponement of teen births. After the teen years, the effects are less pronounced. Overall, it appears that employment opportunities have played an important role in childbearing decisions in Puerto Rico.An earlier version of this paper was presented at the annual meeting of the Population Association of America, Denver, Colorado, 30 April–2 May 1992.     

产融结合退出及影响因素分析——基于参股非上市金融公司视角的实证研究

以2007—2014年发生的我国A股上市公司参股非上市金融公司事件作为研究样本，对企业退出产融结合的现象进行了探讨，实证结果表明：每股收益越低、资产负债率越高、协同费用率越高、产融结合年限越短，企业越有可能退出产融结合。研究能帮助企业在实施产融结合后更有针对性地关注自身运营状况和财务状况，也为其建立健全风险监督与防范机制提供了一定的政策支持。     

Pre-term Foetal Life Times in Scotland

A proportional hazards model was used to evaluate the association between ten categorical covariates and the risk of pre-term delivery for women having their first child and women in subsequent pregnancies. An adaptation of the model for use with grouped survival times made it possible to model foetal life times between 28 and 36 completed weeks of gestation for 67,000 Scottish singleton births in 1981. The use of the model was justified by testing time-dependent effects. For both groups of women age, and a history of abortion, were major factors associated with increased hazard. For women experiencing a second or higher-order birth a history of perinatal death was also associated with substantially increased hazard to the pregnancy.     

如何解释资本结构的调整方式和速度--基于福耀玻璃的案例分析与讨论

以现有资本结构理论为基础,试图寻找能解释各种典型公司资本结构调整方式和速度的理论框架。首先以案例分析为基础分析了主流资本结构理论对案例公司资本结构调整方式的解释程度和解释异同。然后结合公司的财务政策,定性分析了主流理论对于资本结构调整方式存在解释异同的背后原因以及将主流理论融合的理论框架。认为从资金供需的角度理解权衡理论和优序融资理论以及市场择时理论,可以将这些主流理论统一起来解释各种典型的资本结构调整方式。同时,发现以计量模型估算的资本结构调整速度推断资本结构调整到目标水平所需的时间,会误导人们对于资本结构调整方式的理解。     

论融资约束下企业最优投资时机选择

利用企业投资的三期静态模型,考察了企业投资额、自有资金与外部融资之间的关系。通过比较企业在不同期间即时投资和延迟投资的投资收益,求解得到企业在融资约束下的投资临界值,进而得出了企业在投资可延迟条件下的最优投资时机和投资规则。     

A critical approach to wage devaluation: The case of Spanish economic recovery

In line with the orientation of EU economic policy, the Spanish government has favoured a strategy of internal devaluation as a way of adjusting price levels within the currency union. The results of empirical studies indicate that the internal devaluation applied in Spain does not seem to have attained the desired goals in terms of reducing the relative prices of exports and consolidating a model of growth based on external demand. Indeed, the estimates drawn up show that tailwinds – the depreciation of the euro and the fall in risk premium as results of the measures taken by the ECB, greater economic activity by trading partners and the fall in the price of oil – exercised a decisive influence in the trends followed by the prices of exports and the balance of trade during the period of crisis management in Spain.     

健全党员能进能出机制问题研究

中国共产党的党员能进能出机制,是党在领导中国革命、建设和改革开放的历程中形成和建立起来的,是我们党健康发展的重要条件。《中国共产党发展党员工作细则》更是首次提出慎重均衡发展中共党员。但目前,一些地方的做法与当前党员队伍建设面临的新形势、新情况还存在不相适应的地方,仍然存在党员入口把关不严、党员教育流于形式、党员监督管理虚化弱化、不合格党员处置相对偏软等问题。为此,我们应当从严把入口、强化监管、畅通出口等方面着手,健全党员队伍的进出口机制,保持党的先进性和纯洁性,增强党组织的战斗力。