On approximating the Indirect Malmquist Productivity Indices by Fisher indices

In this paper it is shown that under certain assumptions the Cost Indirect Malmquist Productivity Index, which is a natural productivity measure for a cost constrained firm, can be approximated as the ratio of the Fisher output quantity index and the cost index.The views expressed in this paper are those of the author and do not necessarily reflect the policies of Statistics Netherlands.     

Core and competitive equilibria of a coalitional exchange economy with infinite time horizon

The core and competitive equilibria of a large exchange economy on the commodity space ?^∞${?}^{\infty }$ will be discussed. We define the economy as a measure on the space of consumers’ characteristics following Hart and Kohlberg (1974), and prove the existence of competitive equilibria and their equivalence with the core without assuming the convexity of preferences.     

The equilibrium set of infinite dimensional Walrasian economies and the natural projection

The natural projection plays a fundamental role to understand the behavior of the Walrasian economies. In this paper, we extend this method to analyze the behavior of infinite dimensional economies. We introduce the definition of the social equilibrium set, and we show that there exists a bijection between this set and the Walrasian equilibrium set of an infinite dimensional economy. In order to describe the main topological characteristics of both sets, we analyze the main differential characteristics of the excess utility function and then, we extend the method of the natural projection as suggested by Y. Balasko.     

我国城市经济增长效率与城市化效率比较分析

利用数据包络分析的曼奎斯特指数方法测算了2000-2008年我国248个城市的经济增长效率和城市化效率,比较分析了不同区域、不同等级城市的效率表现。研究发现,我国城市经济增长效率持续提高,但城市化长期处于低效率状态,严重滞后于经济增长;地级市两种效率的初始领先地位已逐渐被直辖市所取代;东部地区城市的效率表现优于其他地区,但不同等级城市之间差异较大,城市化严重滞后和轻微滞后的城市数量都比较多。认为通过合理的空间规划和产业引导,提高城市化效率、促进城市化与国民经济增长协调发展,是下一阶段城市发展要解决的关键问题。     

A necessary and sufficient condition for the positivity of the growth rate in the Neumann–Gale model of economic growth

In the paper I will discuss an extension of the classical problem of the positivity of the growth rate in the Gale–Neumann model. I will show that the exploitation of the labour is a necessary and sufficient condition for the positivity of the growth rate.     

On testing for lorenz ordering

Summary A nonparametric asymptotically distribution free approach for testing for Lorenz ordering is presented. Both the one-sample case and the two sample case are considered. This research was supported by an NSERC Canada operating grant at the University of Alberta and Research grant SM065 of Kuwait University.     

An elementary proof that additive i-likelihood characterizes the supports of consistent assessments

I prove a convenient reformulation of Kreps and Wilson (1982, Lemma A1), whose proof has a nontrivial gap. Essentially, the support of a consistent assessment is characterized by the additive representability of the infinite-relative-likelihood relation that the support implies. My proof is unexpectedly elementary, for it relies solely on a classic result about additive representation, which in turn relies solely on Farkas’ Lemma.     

Testing for infinite order stochastic dominance with applications to finance, risk and income inequality

In this paper we develop a test of infinite order degree stochastic dominance based on the use of the empirical Laplace transform function. Two applications are considered. One uses the income data of Anderson (Econometrica 64:1183–1193, 1996) and derives results consistent with his. In the other application we examine the dominance between the U.S. and U.K. stock markets. Using data on the S&P 500 and the FTALL-Share we show that the U.S. displays infinite order degree stochastic dominance of the U.K.

北京市运输业竞争力现状及提升对策

利用进出口数据对北京市运输服务贸易的贸易竞争力指数、比较优势指数和出口优势变差指数进行分析,并将这些指标相互联系和印证,从不同侧面反映北京运输服务贸易的国际竞争力情况;进而从扩大国内运输企业规模效益、提高运输企业技术水平与服务质量、加强运输领域高素质人才培养、健全综合运输服务网络,以及通过运贸一体化把握国际运输主动权等方面,提出提升北京市运输业竞争力的具体对策。     

Risk-neutral skewness and market returns: The role of institutional investor sentiment in the futures market

This paper investigates the effect of index risk-neutral skewness on subsequent market returns and explores whether this effect will vary with various types of institutional investor sentiment in the futures market. Using index futures returns as the proxy of market returns, the empirical results show that the index risk-neutral skewness has a significantly negative effect on subsequent index futures returns. Moreover, the effect of institutional investor sentiment on subsequent index futures returns varies with various types of institutional investor sentiment. Finally, the effect of index risk-neutral skewness on subsequent index futures returns relies on various types of institutional investor sentiment.     

我国沿海省市制造业集聚变动的实证分析

我国沿海省市制造业有明显的产业集聚现象.以新经济地理学模型为基本理论框架,借助产业空间集中程度(SP指数)和绝对集中度(CRn)两项指标,计算1998-2006制造业内部28个行业变化趋势,尝试对我国东部沿海省市制造业近年来的发展状态进行定量评价.结果显示:随着我国东部沿海省市经济的发展,各行业的集中趋势仍是主流,绝大部分行业呈集聚加强趋势,而在区域空间方面出现集聚和衰退两种发展趋势.     

Heterogeneity in Economics

This paper argues that heterogeneity of agents’ characteristics plays a fundamental role in the economy and should do so in economic models. Three aspects are considered. Firstly the notion that assuming heterogeneity was a solution to the problem posed by the results of Sonnenschein Mantel and Debreu is considered and it is suggested that the more pragmatic approach adopted by Hildenbrand is likely to be more productive. Next the role of adaptation and evolution which necessarily involve variety or heterogeneity is examined. It is suggested that heterogeneity will persist since agents will only slowly learn to adapt and that in the meantime the environment will change. Lastly the role of heterogeneity in financial markets is examined. It is suggested that heterogeneous and varying expectations may account for many of the stylised facts which do not seem to be consistent with the standard financial markets model.“Variety is the spice of life”     

杭州土地市场景气指数构建研究

杭州土地市场是目前我国市场化程度最高的区域土地市场之一,其运行轨迹表现出剧烈的周期性波动。本文的研究目的：对土地市场进行有效的监测预警、为政府利用土地参与宏观调控提供决策支持。研究方法：根据景气指数研究思路,运用合成指数研究方法。研究结果：以杭州土地市场为研究对象,在定性与定量分析相结合的基础上构建了杭州市土地市场景气指数。研究结论：经过半年多的追踪,该指数体系能够较好地评价及预测土地市场发展态势。