Social contracts,markets and efficiency: Groundwater irrigation in North India

This paper uses primary data to analyze the institutions and informal markets that govern groundwater allocation in a sugarcane-cultivating village in North India. We find that, in contrast to earlier literature, the observed water trades result in efficient water allocation across farms. We interpret this and other stylized facts in terms of a social contract using a simple bargaining model with limited inter-player transfers. Poor functioning of the power sector leads to reduced pumping and a water supply constraint. Simulations show that power supply reform can significantly increase farm yields, and be financed out of increased farm profits.     

A STATE‐LEVEL ANALYSIS OF BUSINESS CYCLE ASYMMETRY

This paper provides a comprehensive examination of asymmetry in US state‐level business cycles. We consider two different types of asymmetry in the adjustment process of a stationary time series: deepness and steepness. The data used in the study are a comparable set of state‐level coincident indexes (SCIs) developed by the Federal Reserve Bank of Philadelphia. Specifically, results from using the momentum‐threshold autoregressive model provide evidence of asymmetry in the growth rate of 23 SCIs as well as the equivalent national coincident index.     

Investigating regional house price convergence in the United States: Evidence from a pair-wise approach

In this paper we examine long-run house price convergence across US states using a novel econometric approach advocated by Pesaran (2007) and Pesaran et al. (2009). Our empirical modelling strategy employs a probabilistic test statistic for convergence based on the percentage of unit root rejections among all state house price differentials. Using a sieve bootstrap procedure, we construct confidence intervals and find evidence in favour of convergence. We also conclude that speed of adjustment towards long-run equilibrium is inversely related to distance.     

我国C2C电子商务的地理格局及其演化机制

从空间计量经济学的角度,从省域和市域两个空间层次对中国的C2C电子商务发展极其演化机制进行实证研究。研究结果表明,中国的C2C电子商务发展存在由东部沿海到内陆地区梯度降低的空间分布趋势,空间集聚程度非常高,且对当地物流行业发展起到推动作用。C2C电子商务水平与当地的经济发达程度高度相关,社会经济观念的转变、居民受教育程度的提高、互联网相关技术的普及、物流业的迅猛发展以及适当的地方产业集聚等都是促进C2C电子商务发展的重要因素。     

How effective is European merger control?

This paper applies an intuitive approach based on stock market data to a unique dataset of large concentrations during the period 1990–2002 to assess the effectiveness of European merger control. The basic idea is to relate announcement and decision abnormal returns. Under a set of four maintained assumptions, merger control might be interpreted to be effective if rents accruing due to the increased market power observed around the merger announcement are reversed by the antitrust decision, i.e. if there is a negative relation between announcement and decision abnormal returns. To clearly identify the events' competitive effects, we explicitly control for the market expectation about the outcome of the merger control procedure and run several robustness checks to assess the role of our maintained assumptions. We find that only outright prohibitions completely reverse the rents measured around a merger's announcement. On average, remedies seem to be only partially capable of reverting announcement abnormal returns. Yet they seem to be more effective when applied during the first rather than the second investigation phase and in subsamples where our assumptions are more likely to hold. Moreover, the European Commission appears to learn over time.     

基于MIDP2.0的坦克大战手机游戏的设计

随着无线网络技术的不断发展,手机及其他无线设备的普及将成为一种趋势。由于的手机的携带方便,手机游戏又具有娱乐的功能,和J2ME技术的跨平台特性,使得越来越多的国内外厂商开始开发基于J2ME平台的无线应用服务。文章着眼于J2ME技术在手机游戏开发上的应用,在结合实际的开发经验与一些MIDP2.0新技术的基础上,讲述一款自主研发的基于MIDP2.0的坦克大战手机游戏设计。     

电子商务B2C模式在乌鲁木齐旅行社的应用

发展电子商务是旅行社从传统经济时代过渡到网络经济时代的必需,也是参与市场竞争的取胜之道。乌鲁木齐旅行社在应用电子商务B2C模式的过程中还存在着一些不足。实践证明,加强宏观环境建设、增强信息意识、完善网络建设和加大人才培养是发展电子商务的有效途径。     

中国服装业营销模式探索：VANCL品牌营销案例

进入数字化时代,电子商务正改变着工业化社会传统的、物化的营销模式,消费者可以直接通过网络完成购买行为,市场营销走入了新的阶段——网络营销阶段。以中国服装行业为背景,在分析服装行业的特点及经营模式的基础上,探讨了B2C网络营销模式的关键影响因素,最后以VANCL为例,分析其取得成功的原因及如何保持有效的竞争力。     

Evaluating Projects in a Dynamic Economy: Some New Envelope Results

Abstract. This paper deals with the modern theory of social cost–benefit analysis in a dynamic economy. The theory emphasizes the role of a comprehensive, forward-looking, dynamic welfare index within the period of the project rather than that of a project's long-term consequences. However, what constitutes such a welfare index remains controversial in the recent literature. In this paper, we attempt to shed light on the issue by deriving three equivalent cost–benefit rules for evaluating a small project. In particular, we show that the direct change in a net national product (NNP) qualifies as a convenient welfare index without involving any other induced side effects. The project evaluation criterion thus becomes the present discounted value of the direct changes in NNP over the project period. We also illustrate the application of this theory in a few stylized examples.