亳州中药材市场电子商务发展模式研究

随着网络和通讯技术不断提高,互联网向商业化、社会化发展,中药材的交易市场也迎来了电子商务时代。在电子商务环境下,缩短中间交易环节,降低交易成本,提高交易速度,减少税收流失,构建中药材的电子交易平台是本文的研究内容。分析了中药材的交易现状,并从四个层面论述了建设中药材电子交易平台的支撑环境;最后从中药材交易的电子商务化角度出发,针对目前亳州中药材交易现状和出现的问题,提出解决方法和电子商务发展模式。     

Revisiting Savage in a conditional world

Summary. I present an axiomatization of subjective expected utility and Bayesian updating in a conditional decision problem. This result improves our understanding of the Bayesian standard from two perspectives: 1) it uses a set of axioms which are weak and intuitive; 2) it provides a formal proof to results on the relation between dynamic consistency, expected utility and Bayesian updating which have never been explicitly proved in a fully subjective framework. Received: December 1, 2000; revised version: February 26, 2001     

企业转让制度之比较研究

企业转让是指为了一定的营业目的通过签定合同将企业作为一个有机组织体的全部财产或部分重要财产进行有偿转让的活动。它是企业的所有权在不同的市场主体之间的移转,既不同于货物买卖也不同于企业财产的转让。企业转让制度在《德国商法典》、《日本商法典》和《韩国商法典》中都有专门规定,但在《澳门商法典》中规定的更为全面,主要涉及商号、债权债务关系、竞业禁止和劳动关系内容。建立企业转让制度是市场经济的内在体现,对我国发展经济和解决就业有着重要的现实意义,同时也符合我国建立现代产权制度的要求。     

中国期权市场运作规则的制定与验证研究

笔者以郑商所期权核心规则制定和期权模拟测试结果为例进行分析。介绍中国期权市场运作研究项目背景,研究期权市场的重要功能、期权市场与期货市场关系,探讨中国期权上市的可行性以及如何进一步做好期权上市准备工作、加快上市步伐等实际运作问题。     

阻碍资本外流契约对区域经济的影响

阻碍资本外流契约不仅影响资本优化配置,也削弱代理人在优惠回报契约中的谈判力,从而使区域经济难以实现效用最大化.同时,在存在代理人道德风险的情况下,阻碍资本外流契约所规定的撤资高额违约金会妨碍区域经济总效用最大化的实现.应从制度上消除区域内外资本的等级差别,规定区域融资契约合理的法定有效期,并制定强有力的法律来制止区域融资主体迫使投资者与之签订只体现自己意愿的阻碍资本外流契约.     

Frictions, Heterogeneity and Optimality in Mortgage Modeling

The purpose of this article is to provide a unified framework for incorporating frictions into a theoretical options-pricing model (OPM) for mortgages. This article presents formulation for a frictions-adjustable mortgage model that integrates borrower heterogeneity while simultaneously preserving prepayment and default financial decisions. Our model demonstrates the flexibility of the OPM by simulating separate and concurrent effects of three categories of frictions on the mortgage and mortgage components. Researchers can use our example formulation to determine the effects of specific borrower characteristics on mortgage values without destroying the options theoretic framework.     

我国涉外企业外汇交易风险研究

随着世界经济逐步向全球一体化的方向发展以及我国对WTO相关条款的逐步履行,我国与其他国家的经济往来也变得更加频繁。更为重要的是,我国外汇管理体制改革的进一步深化和外汇市场的发展和完善,使得人民币汇率开始走向市场,汇率变动的频率和范围将大大增强。因此,在这一背景下,本文以科学性和前瞻性为指导原则,通过阐述我国涉外企业面临的外汇交易风险现状和问题,揭示这类企业加强外汇交易风险管理的必要性,在此基础上,来探讨外汇交易风险对我国涉外企业净利润的影响,最终结合我国外汇管理体制改革的实践,提出有效防范和规避外汇交易风险的建议和对策。     

Behavioral assumptions and theory development: the case of transaction cost economics

From a critical realist perspective, I discuss the role played by behavioral assumptions in organization theories, and use transaction cost economics as an illustrative example. Core behavioral assumptions often constitute the foundation of the mechanismic explanations of a theory, and thus should play a pivotal role in theory development. I distinguish between assumption‐based and assumption‐omitted theory testing, and show that empirical research in transaction cost economics has been dominated by assumption‐omitted testing. To establish a solid foundation for a new theory, management researchers should pay more attention to assumption‐based testing. Copyright © 2006 John Wiley & Sons, Ltd.     

我国现行融资制度功能的理论及实证分析

内生于经济增长的融资制度应具备筹资功能、降低交易成本功能、价格发现功能、流动性功能和风险转移功能等五方面的功能.我国现行融资制度基本能够有效地进行储蓄动员,但在向资本转化方面存在着一定的障碍;作为公共资源的政府融资仍然发挥着相当重要的作用,但金融市场对经济的促进作用有进一步弱化的趋势;在地区间和企业间存在着资源的逆配置现象,总体上资本的运用效率较低,而非正规金融发挥了不可或缺的作用;严格的利率管制使中介的价格发现功能几乎没有,而市场的价格发现功能一直较弱;此外,存在较高的交易成本,流动性水平整体较低,风险转移功能也相对缺乏.     

An optimization approach to business buyer choice sets: How many suppliers should be included?

In many new or repeat purchasing situations, business buyers must decide how many suppliers to consider (a “choice set”) in determining which supplier(s) to actually buy from or contract with. This paper develops an optimization approach to determining the size of the choice set, taking into consideration buyer utility and search and evaluation costs. A theoretical model is developed for both one-time and repeat purchase situations. The model is estimated using empirical data received from bids received for procurement auctions. In these auctions, suppliers provide bids for steel pipe based on two product attributes (price and delivery time). Model sensitivity to small changes in parameters is also tested.