Climate change, irrigation, and Israeli agriculture: Will warming be harmful?

This paper utilizes a Ricardian model to test the relationship between annual net revenues and climate across Israeli farms. The study finds that it is important to include the amount of irrigation water available to each farm in order to measure the response of farms to climate. With irrigation water omitted, the model predicts climate change is strictly beneficial. However, with water included, the model predicts that only modest climate changes are beneficial while drastic climate change in the long run will be harmful. Using the AOGCM Scenarios we show that farm net revenue is expected to increase. Although Israel has a relatively warm climate a mild increase in temperature is beneficial due to the ability to supply international markets with farm product early in the season.     

基于博弈视角的供应链伙伴关系研究

科学技术的飞速发展、经济的全球化以及竞争的日益激烈，使得企业要想在市场上取得成功，就必须和供应商、客户建立紧密的伙伴关系，通过整体协作增强各节点企业的竞争力。对于供应链伙伴关系，可以从交易费用、资源观、博弈论等到不同视角进行研究，本文将从博弈的视角，通过企业间博弈的不同阶段，包括囚徒困境、鹿的陷阱以及单方承诺三个阶段，对供应链内企业间的伙伴关系进行探讨，揭示其内在规律。     

Domestic Support and Border Measures for Processed Horticultural Products

In horticultural markets, trade barriers often apply to the processed products whereas domestic support applies to farm-produced raw commodities. Here we assess the effects of such trade barriers and domestic support by simulating the effects of policy reform on global processing tomato markets, which are faced with modest processed product tariffs and high domestic support in the European Union (EU). Both protection and EU subsidy drive down world welfare, but we find that reducing import tariffs for tomato products would yield greater effects on markets and larger welfare impacts outside Europe than would reductions in EU domestic support.     

Research on principal-agency of stockholders and managers under asymmetric information condition

In modem enterprises, a separation of the right of ownership and management results in asymmetric information problems between stockholders and managers. In conditions of principal-agency relationship, the game behaviors between principle and agency within enterprises are impacted by asymmetric information. This study discusses the game behaviors between stockholders and managers by using information economic theories from the perspective of asymmetric information. Based on the model of the principal-agency relationship between stockholders and managers, our research uses quantitative analysis to reveal how to achieve maximum profit expected of stockholders through an incomplete contract, under asymmetric information condition.     

蒙代尔-弗莱明模型在发展中大国的适用与延伸

M-F模型是开放经济宏观经济学的基本模型,其存在的缺陷和局限是理论拓展的主要方向。本文对M-F模型的前提假定和分析过程作出了放松和修正,使其适用于发展中大国的情形。并在M-F模型的货币政策效应分析基础上,提出M-F模型在发展中大国的延伸分析方法,即Semi-M-F模型分析方法,指出发展中大国的货币政策是部分起作用的。最后,对Semi-M-F模型分析方法在中国的应用进行评述。     

基于引力模型的中美农产品贸易边境效应研究

针对中美两国在农产品贸易上的新变化,应用引力模型的派生模型——边境效应引力模型对中美两国农产品贸易的流量和流向进行理论和实证研究。首先介绍了边境效应引力模型基本模型的推导过程,并引入了调整模型。然后采用1987至2005年其中5年的截面数据进行计算,结果发现:中美农产品贸易的边境效应显著存在,且呈逐年下降趋势;两国之间的农产品贸易边境效应存在流向和区域上的差异;距离的平方并不影响模型的可靠性。     

Control of intellectual assets in client relationships: implications for innovation

This empirical study of business‐to‐business service firms examines the determinants and effects of control rights to intellectual assets in a property rights theoretic framework. Regression analyses using survey data suggest that service suppliers that retain control over their intellectual output are more innovative. In long‐term relationships, service firms' clients may thus be better off balancing their need to control outsourced activities with the suppliers' incentives to invest in learning and innovation. Additionally, and aligned with property rights theoretic predictions, service suppliers' bargaining power and their indispensability in service projects are positively associated with their ability to retain control rights. In contrast, innovation capabilities are not very significant in determining control rights allocation between service suppliers and their clients. Copyright © 2008 John Wiley & Sons, Ltd.     

The adequacy of asymptotic approximations in the near-integrated autoregressive model with dependent errors

We consider the normalized least squares estimator of the parameter in a nearly integrated first-order autoregressive model with dependent errors. In a first step we consider its asymptotic distribution as well as asymptotic expansion up to order O_p(T⁻¹). We derive a limiting moment generating function which enables us to calculate various distributional quantities by numerical integration. A simulation study is performed to assess the adequacy of the asymptotic distribution when the errors are correlated. We focus our attention on two leading cases: MA(1) errors and AR(1) errors. The asymptotic approximations are shown to be inadequate as the MA root gets close to −1 and as the AR root approaches either −1 or 1. Our theoretical analysis helps to explain and understand the simulation results of Schwert (1989) and DeJong, Nankervis, Savin, and Whiteman (1992) concerning the size and power of Phillips and Perron's (1988) unit root test. A companion paper, Nabeya and Perron (1994), presents alternative asymptotic frameworks in the cases where the usual asymptotic distribution fails to provide an adequate approximation to the finite-sample distribution.     

对中国形成世界制造中心进程的冷思考

改革开放以来，我国迅速成为制造业大国，但还远远不是制造业的世界中心。只有认清我国制造业存在的预期利润低、结构不合理、产业链的低端定位、边际效应递减、研究与开发费用不足以及教育结构对制造业的瓶颈效应等问题，并对症下药，才能将我国的制造业真正做大做强。     

中小企业融资与发展中小金融机构

一个国家的经济稳定持续增长离不开数量众多的中小企业，特别是在稳定经济、吸纳就业、出口创汇和提供社会服务等方面，中小企业的作用是不可或缺的。我国中小企业的发展状况与美国相比，相距甚远，研究美国中小企业的融资模式对解决我国现存的中小企业融资困境具有一定的参考价值。本文就中小企业融资与发展中小金融机构提高了我国相应的几点建议与对策。