我国闲置土地处置中的政府功能与政策选择分析

目前我国土地闲置现象触目惊心,造成实质的资源浪费和损失。从性质上来分析,土地闲置也属于土地市场失灵,需要由行使公共职能的政府给予矫正。在目前的各种矫正措施中,有偿收回是一种较为可行的措施。有偿收回,既可提高闲置土地的处置效率,使土地效益尽早实现,又能降低博弈和交易成本,有利于维护当地的投资环境、更有利于稳定土地需求预期、端正投资动机,对地方的财政收入及经济社会平稳健康发展都具有正面价值。     

中国郑州棉花期货市场的国际定价功能研究

本文借助计量经济学的分析方法,对郑州商品交易所、纽约期货交易所期棉价格与国内棉花现货价格这三者的关系进行了研究,并测算了郑州商品交易所与纽约期货交易所在价格发现中的贡献份额。研究结果表明,三者之间存在协整关系,纽约期货市场在国际棉花定价体系中占有主导地位,而导致郑州棉花期货市场国际定价功能弱化的原因则是国内棉花期货市场与现货市场缺乏有机联系。     

Data Fixation and the Use of Traditional Versus Activity-Based Costing Systems

An important debate in the contemporary accounting literature relates to the relative merits of activity-based versus volume-based product costing methodologies. Traditional volume-based costing systems are said to be flawed and may seriously mislead strategic decision making. Such arguments assume that decision makers use such information in an unproblematic way. This article reports on an experiment designed to investigate whether decision makers are able to overcome data fixation in a setting involving the use of product cost information. In response to criticisms of previous accounting studies of data fixation, subjects received some feedback after each decision, and were rewarded based on performance. The experiment involved subjects making a series of production output decisions based on detailed case information of a hypothetical firm facing different market conditions for each decision. A between-subjects design was utilized with two cost system treatments: activity-based costing (ABC) and traditional costing (TC). It was hypothesized that the group provided with ABC cost data would make 'optimal' decisions and the group provided with TC cost data would overcome fixation. The results of the experiment indicated that there was, in general, evidence of data fixation among TC subjects, but a small number of subjects did adjust to ABC costs. These results are discussed in the light of previous research and some future directions are outlined.     

Rates of Return to Schooling in China

This study uses data from a 1988 survey of Chinese individuals to estimate rates of return to schooling in China. The Mincer-type rate of return to schooling was estimated at 4.02 percent in the rural areas and 3.29 percent in the urban areas; these are fairly low estimates compared with similar estimates in other countries. The rate of return to schooling for females was significantly higher than that for males in urban areas. In addition, members of the Communist Party in urban areas had significantly lower returns to schooling compared with non-members.     

Self‐Fulfilling Early‐Contracting Rush*

In markets for entry‐level professionals, the insurance motive drives some participants to sign early contracts. The rush to early contracting can be self‐fulfilling, as both its effect on expectations about demand–supply balance in the subsequent spot market and the effect on it from changes in the demand–supply balance can be nonmonotone. Matching markets with more risk‐averse participants, a greater uncertainty regarding relative supply of positions, or a more polarized distribution of applicant qualities are more vulnerable to self‐fulfilling early‐contracting rushes. Employers can have a collective interest in preventing early offers to a few promising applicants from starting the rushes.     

Why managers divest—Evidence from New Zealand's largest companies

Chief Executives from New Zealand's largest companies were surveyed to distinguish divesting and nondivesting companies, and to identify the relative importance of the factors and motives which led to the divestment of 208 business units in the period 1985 through 1990. The divesting companies were considerably larger and faster growing than nondivestors. The typical divestment was motivated by the need to convert unattractive assets into liquid form which could then be held to strengthen the balance sheet, or reinvested in either the core business or new areas.     

经济全球化时代的企业核心竞争力

随着经济全球化进程的加快，我国企业日益步入信息技术极速发展、技术升级日新月异、世界市场自由开放、各国竞争激烈残酷、机遇挑战同时并存的新环境。企业意欲在这样错综复杂的市场竞争中立于不败之地并谋求长期生存与稳步发展，就必须深刻认识到核心竞争力是其长期竞争优势的源泉，是其获得成功的关键要素。     

大型现浇混凝土工程给水管道预埋问题的研究

文章对大型混凝土现浇工程中给水管道预埋应注意的几个问题进行了详细的分析和总结,为推广应用混凝土现浇工程管道同步预埋提供了提高工程质量、加快施工进度的指导方法。     

2010年北京三次产业发展预测与研究

本文通过对北京三次产业发展的现状分析,研究了三次产业的生产结构、分配结构、经济效 益和经济结构的演变过程,指出目前存在的主要问题并结合模型对2010年北京的三次产业做了预测展望。     

以非线性理论阐述反馈振荡器的频率与幅度的稳定性

本文首先对线性的频率稳定理论用于近似正弦反馈振荡器的线性频率稳定理论,进行了评论性的回顾。在这方面,解释所谓的线性振荡器是清楚的。其后,是应用描述函数法和判决方程法所得到新的表达式,去阐述反馈振荡器考虑成一个非线性网络时的振荡频率和振荡幅度的稳定性。