The Impact of the 1994 Federal Assault Weapons Ban on Gun Markets: An Assessment of Short-Term Primary and Secondary Market Effects

The reactions of the gun market, including those of producers, wholesalers, retailers, and consumers, play an important role in shaping the potential impact of gun control policies on gun crime. As a case in point, this paper examines the federal Violent Crime Control and Law Enforcement Act of 1994, which bans a group of military-style semiautomatic firearms (i.e., assault weapons). Using a variety of national and local data sources, we assess the short-term (1994–1996) impact of the assault weapons ban on gun markets, examining trends in prices and production of the banned weapons in legal markets and assessing the availability of the banned weapons in illicit markets as measured by criminal use. Prices of assault weapons rose substantially around the time of the ban's enactment, reducing the availability of assault weapons to criminal users in the very short run. However, a surge in assault weapon production just before the ban caused prices to fall in the months following the ban. Implications of the findings for assessing this and other gun control policies are discussed.     

美国反垄断法对医院合并的适用分析

从上世纪80年代起,美国的医院经历了前所未有的合并浪潮,反垄断执法部门也开始将注意力集中在医疗领域。但是,由于反垄断法的主要目的和分析方法是用来针对传统的商业和贸易领域,而医疗机构并不是纯粹的商业机构,因此反垄断法在控制医院合并时产生了种种新问题。     

Forensic applications of stable isotope analysis: Case studies of the origins of water in mislabeled beer and contaminated diesel fuel

This paper describes the use of oxygen (¹⁸O) isotope analysis of water contained in two different materials — beer and diesel fuel — involved in the resolution of two separate cases. In the first case study, it was possible to demonstrate that a sample of beer labelled as premium brand in fact belonged to a cheap brand. The second case related to the contamination of diesel fuel from a service station. The diesel fuel contained visible amounts of water, which caused vehicles that had been filled up with it to become defective. For insurance purposes, it was necessary to determine the source of water. The δ¹⁸O values for the water of nearly all samples of diesel was close to the δ¹⁸O of local tap water at the filling station.     

A study of Spanish companies＇ hedging strategies in Latin America

This paper looks at the impact that unanticipated changes in the exchange rate, specifically the currency crises that took place in Latin America between 1998 and 2004, had on the value of Spanish companies in this emerging region. It also studies the strategies, decisions, measures and initiatives that these firms made to improve the effectiveness of their hedging activities. Building upon previous studies in industrialized countries, the study applies a broad perspective as it takes a cross-functional approach by including finance, strategic planning, marketing, and operations management in the analysis. The data was collected from interviews containing structured and open-ended questions with senior managers and directors of the largest Spanish investors in Latin America and then analyzed using quantitative and qualitative methods. The quantitative study involves a time series regression to calculate a foreign exchange exposure coefficient. The qualitative analysis uses a systematic approach to develop categories from the data gathered in the interviews. The research results suggest that foreign companies exposed to exchange risks in emerging markets gain resilience when decentralizing the decision-making and implementation of hedging initiatives to subsidiaries to： （1） Elaborate scenarios, （2） assess possible impacts of exchange rate variations, （3） design pre-emptive measures, and （4） set alternative strategies to mitigate potential impacts. This multi-functional and systemic approach to manage risks seems to offer companies higher flexibility and new knowledge that can be shared among subsidiaries working in similar economic and political environments.     

Comparative Analysis and Economic Policies with Special Reference to Financial Crises

Policies for preventing or mitigating unfavorable economic conditions, such as inflation, balance-of-payments deficits, and recessions are usually determined by successful policies used in the past, but these policies may not be relevant for certain problems in the future due to changes in conditions. In the past, developing countries with balance of payments problems seeking help from the IMF were usually required to reduce their budget deficits, restrict the money supply, and make other macroeconomic restrictions. However, financial crises experienced by the East Asian countries in 1995–1996 arose mainly from declines in their securities markets accompanied by capital exports and sharp currency depreciation. The IMF provided generous assistance conditioned on the recipients' applying restrictive macroeconomic measures, even though there was no inflation or excessive monetary expansion. The cause of the financial crises was primarily capital outflows generated by defaults on loans made by banks largely for real estate projects, and in some cases resulting bank failures. The capital outflow and the sharp depreciation of the currencies, coupled with macroeconomic restrictions, led to recession and unemployment in these countries. The article goes on to discuss the policies the IMF should have promoted. Its credits should have been used to sustain imports rather than to support currencies and maintain debt service repayments.     

Crime and Residential Choice: A Neighborhood Level Analysis of the Impact of Crime on Housing Prices

Crime serves as an important catalyst for change in the socio-economic composition of communities. While such change occurs over a long period of time, crime is capitalized into local housing markets quickly and thus provides an early indicator of neighborhood transition. Using hedonic regression, we quantify this “intangible cost” of crime and extend the crime-housing price literature in several important ways. First, we disaggregate crime to the census tract level. Second, using longitudinal data, we examine changes in crime in addition to the neighborhood levels of crime. Third, we differentiate between the effects of property crime and violent crime. Fourth, we also disaggregate our sample into groups based on per capita income of the census tract. Finally, we show that it is vital to account for the measurement error that is endemic in reported crime statistics. We address this with an instrumental variable approach. Our results indicate that the average impacts of crime rates on house prices are misleading. We find that crime is capitalized at different rates for poor, middle class and wealthy neighborhoods and that violent crime imparts the greatest cost.

Dominance in the Tetra Pak Case: An Empirical Approach

The 1991 decision of the European Commission on the Tetra Pak case was based on information which seemed to prove the firm's anti-competitive behavior. The Tetra Pak case is investigated here focusing on the meaning of multimarket dominance, using empirical techniques. We find that a more rigorous analysis of the data available would not confirm the Commission's assertions. That is, it cannot be concluded with certainty that the Commission was right to relate Tetra Pak's dominance in the aseptic sector to its market power in the non-aseptic sector. Our results suggest a general framework for the analysis of abusive transfer of market power across vertically or/and horizontally related markets.     

对我国《水法》关于水资源流域管理规定的思考

2 0 0 2年《水法》确立了水资源流域管理制度 ,设立了流域管理机构。本文认为《水法》对流域管理机构的规定在实践中难以真正落实流域管理制度 ,将导致流域管理机构的管理效果不显著 ,影响水法对正义价值的追求。建议建立健全具有权威性和独立性的科学的流域管理机构体系 ,强化流域水资源的宏观管理 ,弱化微观管理 ,增强服务功能。     

我国水污染物排放许可证制度的整合——基于《行政许可法》的思考

排污许可证制度在我国虽已确立,然而问题很多,<行政许可法>的颁布更凸显其不足.本文首先分析了现有水污染物排放许可证制度存在的问题与缺陷,指出完善的必要性,并对如何确立科不的水污染物排放许可证制度的基本原则和框架作出论述.最后就重新构建、整合水污染物排放许可证具体制度提出设想.     

Transboundary water interaction I: reconsidering conflict and cooperation

Whether the inter-state and sub-national tensions over transboundary waters will lead to greater conflict or increased cooperation remains a hotly debated issue. Most work on the subject situates transboundary water conflict and transboundary water cooperation at opposing ends of a continuum. The examination of either conflict or cooperation, we argue, refutes the reality of the vast majority of contexts where cooperation and conflict actually co-exist, and perpetuates the paradigm that any conflict is ‘bad’, and that all forms of cooperation are ‘good’. The efforts of the international water academic and practitioner communities may be better served through a combined reading of conflict and cooperation as transboundary water interaction. Mirumachi’s Transboundary Waters Interaction NexuS is offered as a robust method demonstrating that simultaneous consideration of conflict and cooperation is both insightful and possible. Transboundary water interaction is shown to be an inherently political process determined by the broader political context. We examine evidence suggesting that uncritical acceptance of traditional forms of ‘cooperative’ arrangements may in fact sustain the conflict it was intended to transform. Several other less well-known faces of ‘cooperation’ are discussed in detail, with examples of narrow, token and coercive cooperation derived from inter-state relations on the Jordan, Nile and Ganges rivers. With a view to paving the way for improved transboundary water sharing and governance, subjectively negative, neutral and positive forms of interaction are defined, and linked with a first approximation of their potential driving forces.