使用差价补偿策略的寡头竞争模型

差价补偿策略,是近年来在国内兴起的一种企业间竞争策略。从博弈论角度来看,对消费者承诺差价补偿,即是向竞争对手发出了一种不打价格战的可置信的威胁信号,可以有效地避免企业间的价格竞争;从市场营销角度来看,差价补偿策略会影响消费者行为,改变消费者预期,最终促使市场竞争向着企业有利的方向发展。本文对差价补偿策略建立了一个数学模型,分析企业采用差价补偿策略的原因以及竞争双方博弈的均衡结果。     

论我国农业企业化经营的实现途径

实现农业企业化经营,对我国发展现代农业具有十分重要的意义.但是在我国现有条件下,由于农业融资不畅、小农生产方式阻碍分工、剩余劳动力难寻出路、路径依赖作用和小农意识刚性等方面的原因,农业企业化经营的实现途径不可能是自发的.因此,实现农业企业化经营,只能走政府扶持企业、企业扶持农户的路子.只有政府扶持企业,才能引导资金流向农业生产,才能突破路径依赖的瓶颈,才能使企业有效地扶持农户,才能打破劳动力转移在宏观上的胶着状态,从而尽快实现农业的企业化经营.     

“定量宽松”政策的实质及对中国的影响

在当前的国际经济与金融危机环境下,美国等西方国家通过扩大货币的发行量大规模增加时资本市场货币的供应,货币政策的重心向"定量宽松"政策倾斜.关于"定量宽松"货币政策的实质以及对中国的影响,我国经济学界已经展开了广泛的热议.本文认为,对这一问题应据据中国人民银行行长周小川提出的构建"超主权国际储备货币"的建议进行更深入探讨,本文在现有研究基础上,对此进行了进一步分析.     

Will Sub-Prime be a Twin Crisis for the United States?

We identify incentives generated by the Bretton Woods II system that may have contributed to the sub-prime liquidity crisis now working its way through the international monetary system. We then evaluate the persistent conjecture that the liquidity crisis is or will become a balance of payments crisis for the United States. Given that it happens, the additional costs associated with a sudden stop of net capital flows to the United States could be quite substantial. But we observe that emerging market governments have continued to acquire US assets even as yields have fallen, and the incentives for continuing to do so remain strong. Moreover, the Bretton Woods II system, which has clearly been the most resilient of the forces driving current markets, continues to generate low real interest rates in industrial countries and growth in emerging markets that will help limit the damage from the liquidity crisis.     

On monopolistic competition and optimal product diversity: workers' rents also matter

Abstract .  In the Dixit-Stiglitz model of monopolistic competition, entry of firms is socially too small. Other authors have shown that excess entry is also a possibility with other preferences for diversity. We show that workers' rents also contribute to explain excess entry through a general equilibrium mechanism. Larger wages indeed raises the aggregate earnings and firms sales and profits, which entices too many firms to enter. We discuss the possibility of over-provision of varieties by comparing the equilibrium to unconstrained and constrained social optima and to other regulatory frameworks where wages are not controlled.     

一个并购交易案例中的目标企业价值估算

以实证为例,通过真实评价目标企业的内在价值,来研究并购交易中目标企业价值估算应所选择的评价方法及其合理性,为并购交易提供合理的投资决策依据。     

ACCOUNTING FOR HOUSEHOLD PRODUCTION: A PROTOTYPE SATELLITE ACCOUNT USING THE AMERICAN TIME USE SURVEY

This paper presents a satellite account where households are treated as production units. It extends previous work that treats consumer durables as investment and that values nonmarket household production activities such as cooking, cleaning, and childcare. Services from consumer durables and government capital related to household production are also valued. In constructing the updated accounts, this paper incorporates new time use data from the American Time Use Survey (ATUS) and the harmonized time use data from the Multinational Time Use Study (MTUS). This paper also discusses and incorporates recommendations made by the U.S. National Academies panel on nonmarket accounts.     

COALITION GOVERNMENTS AND SOVEREIGN DEBT CRISES

This article examines the domestic politics of sovereign debt crises. I focus on two alternative mechanisms that aggregate the preferences of domestic actors over debt repayment: single-party versus multiparty coalition governments. I uncover a very strong empirical regularity using cross-national data from 48 developing countries between 1971 and 1997. Countries that are governed by a coalition of parties are less likely to reschedule their debts than those under single-party governments. The effect of multiparty coalitions on sovereign defaults is quantitatively large and roughly of the same order of magnitude as liquidity factors such as debt burden and debt service. These results are robust to numerous specifications and samples.     

Bank loan portfolios and the Canadian monetary transmission mechanism

Abstract .  Following a monetary tightening, bank loans to consumers decrease. This is true for both mortgage and non-mortgage loans, and it is true for a tightening by the Bank of Canada that is, and is not, a response to a tightening by the Federal Reserve System. In contrast, business loans increase following a monetary tightening. The 'perverse' response of business loans cannot be explained by an increase in the demand for funds due to a reduction in real activity. These results are consistent with a change in bank portfolio behaviour in favour of business loans in response to a monetary tightening.     

The asymptotic shapley value for a simple market game

We consider the game in which b buyers each seek to purchase 1 unit of an indivisible good from s sellers, each of whom has k units to sell. The good is worth 0 to each seller and 1 to each buyer. Using the central limit theorem, and implicitly convergence to tied down Brownian motion, we find a closed form solution for the limiting Shapley value as s and b increase without bound. This asymptotic value depends upon the seller size k, the limiting ratio b/ks of buyers to items for sale, and the limiting ratio of the excess supply relative to the square root of the number of market participants. This work was sponsered in part by NSF Grant DMS-03-01795.