研究生就业形势及策略

自1999年研究生大规模扩招以来,毕业生数量激增,研究生“天之骄子”的地位不复存在,如何有效面对就业形势,转变就业观念,提高就业策略是本文探讨的主要内容。     

Short Positions in the First Principal Component Portfolio

Insurance companies and pension plans typically hold well-diversified equity portfolios. These institutions are also often restricted from taking short positions. The diversification requirement operates on the portfolio level, while the short sale constraint is at the individual security level. We examine an investment strategy that exposes a tension between these two requirements. This strategy uses the first principal component to construct the portfolio and by design meets the first requirement. Empirical portfolios based on the first principal component do an excellent job of capturing market exposure and minimizing diversifiable risk. However, in practice such portfolios sometimes contain a few short positions. So this strategy does not always meet the second requirement. We examine which features of stock returns give rise to short positions when a portfolio is based on the first principal component, and we are able to identify the characteristics of the stocks that are responsible for the short positions. These stocks tend to have negative correlations with the majority of other stocks. In contrast such stocks would typically be held long in a Markowitz portfolio. We discuss and explain this puzzle.     

退休老年人身体形态与力量素质相关关系的研究

近年来老年人的身体健康现状日益成为人们关注的焦点问题之一,为了对退休老年人的身体健康状况有进一步的了解,对58-68年龄段退休老年人进行身体形态和力量素质的测试。研究发现身高与握力（r=0.659）、体重和握力（r=0.655）均有显著相关性,且呈正相关趋势,身高与体重（r=-0.243）呈负相关。因此在适度原则下,应加强以力量素质为主的体育锻炼,其对于提高身体素质,增进健康有非常重要的意义。     

Appraisal Accuracy and Automated Valuation Models in Rural Areas

The Journal of Real Estate Finance and Economics - Accurate and unbiased property value estimates are essential to credit risk management. Along with loan amount, they determine a mortgage’s...     

我国大中型工业企业的现状、问题及建议

通过第一次全国经济普查,可以发现我国大中型工业企业多聚集于重工行业,非公经济成为重要骨干力量,大中型工业企业在中西部作用更为突出。目前我国大中型工业企业与国际大企业比差距较为明显,企业创新能力差,研究开发费用投入不足,吸纳劳动力能力不强。需要把企业做强,坚持自主创新,建立一批收纳就业能力较强的大企业集团。     

现阶段我国民营企业的社会责任及其培育

企业社会责任是企业在追求利润最大化的同时负有的维护和增进社会利益的义务。《中华人民共和国合伙企业法》第七条规定:合伙企业及其合伙人必须遵守法律、行政法规,遵守社会公德、商业道德,承担社会责任。我国民营企业总体而言其社会责任感不强,当前有必要强化民营企业的社会责任,强化其社会责任必须明确社会责任的内容。民营企业能否可持续发展与其企业能否承担应该的社会责任有很大的关系,企业社会责任的建构,不仅需要政府、市场和非政府组织三个部门积极的参入,还依赖于企业自身。     

Assessing the role of components of life satisfaction

Factors affecting subjective well-being and their gross effect measurement have been widely studied. However, how people derive utility from these factors has not been fully explored. This article provides a way to decompose the gross effect of major determinants on life satisfaction into direct and indirect effects and make inference for the latter. Because the indirect effect is nonlinear in parameters associated with different models in an equation system, it creates a problem in estimating the standard error. Besides, the categorical nature in survey data further introduces bias to the covariance estimation even asymptotically. To address these issues without knowing the form of heteroskedasticity under the null hypothesis, we propose to extend the wild bootstrap procedure in this particular context. Its robustness against various data properties is validated via several simulation experiments. Using three recent waves of World Values Survey, we find that the relative importance of life control has significantly increased recently, and endowing citizens with the right to enjoy their freedoms and liberties is a more effective policy in raising life satisfaction than promoting national income.     

从竞争战略到价值革新战略的转变

目前企业战略管理基本都是以竞争为中心，这种基于竞争的战略是一种“零和”战略。企业采用竞争战略是受古典经济学的影响和由传统生产要素的稀缺性所决定的。随着IT技术的进一步发展和知识经济的到来，知识已经取代传统的资金、设备等成为主要的生产要素．知识的非稀缺性使得基于竞争的战略再没有生存的空间。本文讨论了一种新的战略即基于价值革新的战略，并对这两种战略的形成机制进行了分析和比较，最后重点讨论了价值革新战略的管理和运作．认为企业必须转向价值革新的战略。     

2006年纺织品出口形势预测

2006年全球纺织服装业有望迎来进出口贸易的大变局时代。目前已经有很多内贸企业开始经营外贸业务，外贸企业也开始返航内地争夺内贸空间……[编者按]     

我国特许经营业试水国际化扩张

自2003年我国特许经营逐渐开始对外开放以来，各类特许经营项目成为中小投资者自主创业最具潜力的领域。