论高校体育教师素质培养与队伍建设

针对高校体育教学改革以及对高校体育教师素质方面提出的各项要求,从高校体育教师综合素质培养与提高、高校体育教师队伍建设应采取的措施等方面入手对高校体育教师素质培养与队伍建设进行了探讨。提出了体育教师要更新观念,注重自身修养等建议,为高等体育教育提供诸多借鉴和参考。     

Inefficient Job Destructions and Training with Hold‐up

This paper develops an equilibrium search model with endogenous job destructions and where firms decide at the time of job entry how much to invest in match‐specific human capital. We first show that job destruction and training investment decisions are strongly complementary. It is possible that there are no firings at equilibrium. Further, training investments are confronted to a hold‐up problem making the decentralized equilibrium always inefficient. We show therefore that both training subsidies and firing taxes must be implemented to bring back efficiency.     

Social security policy with public debt in an aging economy

This paper analyzes a social security policy with public debt in an overlapping generations growth model. In particular, the paper considers a situation in which population aging causes a heavy burden of social security payments where public debt is issued by the government to finance the payment. In the model presented below, an economy with an aging population may achieve two dynamically inefficient equilibria. Under certain conditions, the effects of pension reform and population aging on capital accumulation are entirely different between the two equilibria. Received: 23 July 2001/Accepted: 22 August 2002 I am deeply grateful to an anonymous referee and Professor A. Cigno, the Editor of this journal, for their valuable comments and suggestions. I am also grateful to Kazuyo Tanimoto and Kiheiji Nishida for their research assistance. Any remaining errors are my own. The research reported here was conducted as part of a larger study, the “Project on Intergenerational Equity” at the Institute of Economic Research, Hitotsubashi University. Financial support from Kani Hoken Bunka Zaidan is also gratefully acknowledged. Responsible editor: Alessandro Cigno.     

珠江三角洲和长江三角洲会展业发展比较研究

珠江三角洲地区和长江三角洲地区是我国会展业较为发达的地区。珠三角与长三角在发展会展业上各有其优劣势。促进两区域会展业的更快发展 ,需要进一步明确各自的发展定位 ,加强相互间的协作与合作 ,与旅游业的发展紧密结合 ,不断提高会展业的质量和效益     

数据电文的应用所带来的若干法律问题探析

电子商务中数据电文的应用 ,一方面对传统的法律制度提出了挑战 ,另一方面 ,在数据电文传递过程中又产生了一些新的法律问题。本文结合联合国贸法会《电子商务法范法》及有关国家的电子商务国内立法之相关条文 ,首先对解决数据电文法律问题的基本方法———功能等同法予以分析 ,然后对数据电文传递中的数据电文的归属、发送与接收及确认等问题作了探讨 ,并剖析了我国新《合同法》中的有关规定。     

高校开展软式排球的可行性研究

通过对无排球技术基础学生在教学中试用软、硬两种排球的对比教学分析,探讨软式排球在我国高校开展的可行性。研究结果表明:软式排球较硬式排球技术更容易学习掌握,在我国高校开展是可行的。     

我国电子商务法制环境研究

电子商务是一个正在蓬勃发展的产业。在影响电子商务发展的诸多要素中 ,缺乏相关的法律法规是主要的原因。发达国家电子商务法制环境建设已相对完善 ,分析其现状及发展趋势 ,对剖析我国电子商务法制环境建设中存在的问题及研究发展对策 ,具有理论借鉴意义。     

MEASURING INTERTEMPORAL SUBSTITUTION: THE IMPORTANCE OF METHOD CHOICES AND SELECTIVE REPORTING

I examine 2,735 estimates of the elasticity of intertemporal substitution in consumption (EIS) reported in 169 published studies. The literature shows strong selective reporting: researchers discard negative and insignificant estimates too often, which pulls the mean estimate up by about 0.5. The reporting bias dwarfs the effects of methods, with the exception of the choice between micro and macro data. When I correct the mean for the bias, for macro estimates I get zero, even though the reported t‐statistics are on average two. The corrected mean of micro estimates of the EIS for asset holders is around 0.3–0.4. Calibrations greater than 0.8 are inconsistent with the bulk of the empirical evidence.     

MANAGING CREDIT BUBBLES

We study a dynamic economy where credit is limited by insufficient collateral and, as a result, investment and output are too low. In this environment, changes in investor sentiment or market expectations can give rise to credit bubbles, that is, expansions in credit that are backed not by expectations of future profits (i.e., fundamental collateral), but instead by expectations of future credit (i.e., bubbly collateral). Credit bubbles raise the availability of credit for entrepreneurs: this is the crowding‐in effect. However, entrepreneurs must also use some of this credit to cancel past credit: this is the crowding‐out effect. There is an “optimal” bubble size that trades off these two effects and maximizes long‐run output and consumption. The equilibrium bubble size depends on investor sentiment, however, and it typically does not coincide with the “optimal” bubble size. This provides a new rationale for macroprudential policy. A credit management agency (CMA) can replicate the “optimal” bubble by taxing credit when the equilibrium bubble is too high and subsidizing credit when the equilibrium bubble is too low. This leaning‐against‐the‐wind policy maximizes output and consumption. Moreover, the same conditions that make this policy desirable guarantee that a CMA has the resources to implement it.