Counter-intuitive effects of domestic law enforcement policies in the United States

In spite of the increase in domestic law enforcement policies in the U.S. drug related crime has followed a non-monotonic trend and cocaine and heroin prices, instead of increasing, have been dropping or remained stable over time. All this in a context of an increase in these drugs’ consumption during the 1980s and a small decrease during the 1990s. This paper provides an explanation to these counter-intuitive effects of domestic law enforcement policies. We model how drug lords respond to this type of policy within a conflict framework over the control of distribution activities for illegal drugs, which is novel. The model predicts drug distribution activities, drug prices and drug consumption. These predictions appear to be consistent with the empirical evidence in the United States.     

Evaluation of American option prices in a path integral framework using Fourier–Hermite series expansions

In this paper we review the path integral technique which has wide applications in statistical physics and relate it to the backward recursion technique which is widely used for the evaluation of derivative securities. We formulate the pricing of equity options, both European and American, using the path integral framework. Discretising in the time variable and using expansions in Fourier–Hermite series for the continuous representation of the underlying asset price, we show how these options can be evaluated in the path integral framework. For American options, the solution technique facilitates the accurate determination of the early exercise boundary as part of the solution. Additionally, the continuous representation of the state variable allows the relatively accurate and efficient evaluation of the option prices and the delta hedge ratio.     

Semiotische und verbandstheoretische Grundzüge einer elementaren Statistik

Zusammenfassung Die Statistik wird als ein formalisiertes Sprachsystem gedeutet und verschiedene Statistikalgorithmen werden über einenBooleschen Verband gebildet. Es werden nur nichtstochastische Probleme behandelt.

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Summary Statistic is considered a formalized language system. Some statistical algorithms are interpreted in aBoolean lattice. Only nonstochastical problems are considered.

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Der erste Teil dieser Abhandlung über eine attributive Statistik alsBoolescher Verband wurde im Heft Nr. 2 (1964) der Metrika als Festbeitrag zum 80. Geburtstag des Jubilars Hofrat Prof. Dr. Dr. h. c.Wilhelm Winkler ver?ffentlicht. Statistische Ma?verb?nde erscheinen über eine quasiadditive Bewertung eingeführt. Im vorliegenden zweiten Teil der Arbeit werden die Beziehungen der Statistik zurβ-Informationstheorie und einer speziellen Semiotik kurz er?rtert und die Algebraisierungs-beziehungsweise Geometrisierungsversuche betreffend die statistischen Forschungsmethoden weitergeführt.     

Competition,Strategy, Technology and People: The Challenges Facing PR

A recent survey of leading UK PR practitioners has identified a dynamic, swiftly evolving environment for the public relations industry. Heightened competition, wide-ranging new opportunities and threats stemming from the perceived need to internationalize, the desire for more influence in clients' business strategy formulation, training and recruitment dilemmas, ever-changing technology and an increasing requirement to evaluate the worth of PR are only some of the most pressing issues. This article reviews the survey's findings—revealing a complex and swiftly evolving marketplace—before drawing out some of the principal implications. There are interesting parallels with events in advertising.     

Not Featherbedding,but Feathering the Nest: Human Resource Management and Investments in Information Technology

This study draws on employment relations and management theory, claiming that certain innovative employment practices and work structures pave the way for organizational innovation, namely investments in information technology (IT). It then finds support for the theory in a cross‐section of UK workplaces. The findings suggest that firms slow to adopt IT realize that their conventional employment model hinders their ability to make optimal use of new technologies. Therefore, the paper advances the literature beyond studies of unionization's impact on business investment to a broader set of issues on the employment relations features that make organizations ripe for innovation.     

Financial integration and the term structure of interest rates

This paper presents a model of the term structure for an open economy. A flexible VAR approach is used to model macroeconomic growth, inflation, short rate and the yield spread. Then the term structure is built given restrictions implied by the no-arbitrage condition. Contrary to previously proposed macrofinance models of the term structure, the model suggested here explicitly accounts for financial and real spillovers between economies. As documented in the paper, foreign macroeconomic factors contain a lot of information about the domestic term structure of yields. Put to data, the model explains the dynamics of yields very well. It provides better out-of-sample forecasting results than the closed economy models. Openness induces more variability in the estimated term premia of yields with shorter maturities.     

Live Broadcasting,Gate Revenue,and Football Club Performance: Some Evidence

This paper presents new evidence concerning the main argument of the English Premier League for collective arrangements in selling television broadcast rights. Matches that are broadcast live on television can be considered as a substitute for watching at the stadium. New panel-data show that broadcasting live has a small negative effect on gate revenue for the best performing clubs and a much larger effect for the worst performing clubs. However, the marginal cost is outweighed by the marginal revenue, concluding that restrictions on quantity stemming from collective arrangements are detrimental to the consumers, broadcasters, and clubs themselves.     

Understanding evolutionary processes in non-manufacturing industries: Empirical insights from the shakeout in pharmaceutical wholesaling

Although the empirical pattern of industry shakeout has been documented for many manufacturing industries, we know little about the processes by which market structure evolves in non-manufacturing service industries. This paper establishes detailed empirical observations about the consolidation of a single non-manufacturing industry, the wholesale distribution of pharmaceuticals. These observations are used to explore differences between manufacturing and wholesaling in both the patterns and explanations for consolidation and analyze the explanatory power of theories that link consolidation to technological change. The analysis demonstrates that theories developed to explain consolidation in new manufacturing industries have varying degrees of applicability to the consolidation of drug wholesaling. The observed patterns of exit, innovation, and growth suggest important modifications to evolutionary theories of market structure.