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。     

美国钢铁贸易保护争端及其对世界经济贸易的影响

美国钢铁保障措施的出台是经济衰退期外贸政策保护主义倾向进一步加强的具体表现。作为WTO成员，美国按国内法201条款实施的钢铁保障措施必须符合WTO保障措施规则。但美国钢铁保障措施即使符合WTO规则，也是通过损害其钢铁贸易伙伴正当利益来追求本国利益最大化。因此，在全球贸易体制约束下，美国的行为必然引起各相关方与美国之间运用全球贸易规则的利益博弈，并由此对世界经济贸易产生重大影响。     

钱包赌戏悖论及其行为的经济学意义

本文对行为经济学的一个重要微观模型———钱包赌戏悖论建立了认知分析框架 ,不仅彻底消解了该悖论 ,还发现了与效用和概率均无关的一种新的非理性效应。这一效应既可能导致无帕累托效率的交易陷阱 ,也可能与效用歧化和概率误判等已知的行为经济学效应协同作用 ,产生更复杂的非理性决策。     

From T-Bills to Stocks: Seasonal Anomalies Revisited

This paper employed eleven data series which consist of stocks, bonds, bills, equity premiums, term premiums, and various default premiums to investigate whether January seasonality reported in existing literature is robust across different states of the economy as this has important trading implications. For the periods 1926–1990, small stocks, small stock premiums, low grade bonds, and default premiums (spread between high grade, low grade and government bonds) reveal January seasonality and that the seasonality is robust across different states of the economy except for low grade bond returns and default premiums. January seasonality for low grade bond returns and low grade bond default premiums are primarily driven by results found during periods of economic expansion. Overall, January seasonality is more evident during the economic expansion periods although the magnitude of default premiums is larger during periods of economic contraction. Furthermore, prior findings of strong summer equity returns are primarily driven by the results found during the periods of economic contraction. It is also found that equity returns are generally higher during periods of economic expansion.     

Dominance Statistics: A Simulation Study on the d Statistic

Quality &; Quantity - Cliff (1993) has proposed the use of a measure of effect size alternative to traditionalmean differences: δ {? = Pr(xi1 &;gt; xj2) - Pr(xi1 &;lt; xj2)}which,...     

封闭式基金的市场流动性研究

本文在给出一个改进流动性指标的基础上 ,利用该指标对封闭式基金的市场流动性进行了分析。研究发现 :封闭式基金市场流动性不存在周内效应 ,周内也无显著的变动模式 ;封闭式基金流通股本规模对市场流动性有显著影响 ,市场偏好次小盘基金 ;封闭式基金市场流动性总体上对基金折价没有显著影响。     

Adjustment, Stabilisation and the Analysis of the Employment Structure in Turkey: An Input- Output Approach

The aim of the paper is to examine the effects on employment of the large-scale structural adjustment programme undertaken by Turkey from the early 1980s onwards. In this respect, we particularly analyse how appropriate the choices of factor intensity after structural adjustment programme have been in the domestic production in comparison with the availability of domestic factor endowment. Our findings show that foreign trade in intermediate goods creates extra use of domestic labour, which can be considered as the labour cost of importing intermediate goods. This is the case in the majority of industries in the pre- and post-liberalisation period in Turkey. However, the capacity of using extra labour as a result of importing intermediate goods appeared to have decreased in the post-liberalisation period.     

对供应链中"牛鞭效应"综合治理策略的探讨

通过文献综述,讨论了供应链中牛鞭效应的现象和成因，提出了减轻和消除该效应的对策以及进一步研究方向。     

The topography of metropolitan employment: Identifying centers of employment in a polycentric urban area

While it is well recognized that US metropolitan areas are polycentric, there is little consensus as to the appropriate method for identifying concentrations of employment within them. Existing methods suffer from strong assumptions about parametric form, misspecification, or reliance on local knowledge to calibrate model parameters. This paper introduces a new nonparametric method for identifying subcenters. Results indicate that this, more flexible, nonparametric approach yields greater accuracy with regard to both urban and suburban centers compared with other approaches. This approach should provide better data for the numerous topics that depend on the spatial accounting of employment within metropolitan areas.     

[火用]经济学思想在供应链管理中的应用

在[火用]经济学分析的基础上,综合考虑环境因素对供应链系统的影响,引入了环境负效应因子的概念,并运用系统科学的广义子系统理论,对供应链系统中的各股[火用]流进行分析,建立了供应链广义子系统[火用]经济学模型.