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Ethnic entrepreneurship: A theoretical framework

(from the introduction:)
With the recent growth of new ethnic populations in Western societies, ethnic business is no longer a matter of strictly historical interest; neither is it parochial American concern. Because new ethnic populations have grown at a time when Western economies are in a phase of slow growth and massive technological challenge, ethnic adaptation and…

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English / 01/01/2007

On the Name of Social Entrepreneurship: Business School Teaching, Research, and Development Aid

The concept ‘social entrepreneurship' is virtually proliferating like a virus, elating and inspiring people in such diverse spheres as politics, the media, the non-profit sector as well as academia. Despite the rather young pedigree of the term, social entrepreneurship today is predominantly construed as a positive sign, a genuine ‘hurray word', so to speak. In an effort to…

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English / 01/01/2007

A Management Rule of Thumb in Property-Liability Insurance

Due to substantial changes in competition, capital market conditions, and supervisory frameworks, holistic analysis of an insurance company’s assets and liabilities takes on special relevance. An important tool in this context is dynamic financial analysis (DFA). DFA is a systematic approach to financial modeling in which financial figures are projected under a variety of possible…

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English / 01/01/2007

The Conglomerate Discount: A New Explanation Based on Credit Risk

We present a simple new explanation for the diversification discount in the valuation of firms. We demonstrate that, ceteris paribus, limited liability of equity holders is sufficient to explain a diversification discount. To derive this result, we use a credit risk model based on the value of the firm's assets. We show that a conglomerate can be regarded as an option on a…

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English / 16/12/2006

Suicide Attempts as Social Goal-Directed Systems of Joint Careers, Projects, and Actions

In the present study we examined to what extent persons who attempt suicide describe their attempt in terms of social, joint processes. Psychotherapists interviewed 40 patients hospitalized in a general hospital for a few days after an attempted suicide. The content of the interviews was analyzed for the level of systemic processes the patients referred to (that is, action, project,…

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English / 07/12/2006

Are the effects of training programmes in Germany sensitive to the choice and measurement of labour market outcomes?

We reconsider the evidence of Lechner, Miquel and Wunsch (2004, 2005) on the effectiveness of training programmes for the unemployed conducted in East and West Germany in the period 1993-1994 by investigating whether, and if so, how overall policy conclusions depend on the particular choice of the outcome variable. We find that different measures of employment and earnings provide…

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English / 01/12/2006

Performance Measurement of Hedge Funds Using Data Envelopment Analysis

Data envelopment analysis (DEA) is a nonparametric method from the area of operations research that measures the relationship of produced outputs to assigned inputs and determines an efficiency score. This efficiency score can be interpreted as a performance measure in investment analysis. Recent literature contains intensive discussion of using DEA to measure the performance of…

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English / 01/12/2006

Trade Conflicts: The Role of WTO Dispute Settlement

Role of WTO dispute settlement for the steel industry.

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English / 09/11/2006

Jay W. Forrester - Operational Researcher: Creator of the System Dynamics Field Joins IFORS' OR Hall of Fame

Jay Wright Forrester's distinghished career at MIT led to his founding the field of system dynamics. By adopting servomechanistic ideas he created a new approach to simulating the behavior of social systems, to explaining that behavior and to crafting effective long-term policies. he established the subject as an academic discipline at MIT's Sloan School and led high-…

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English / 01/11/2006

Analyzing Active Investment Strategies

The article examines strategies for making financial investments by using a decomposition of the non-central tracking error variance to indicate how actively assets are managed. This method examines how much risk the asset manager takes in investments by analyzing positive and negative returns. Two mathematical models are presented to analyze the active management of investments. The…

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English / 21/10/2006

Changing Gender: The Discursive Construction of Equal Opportunities

This article provides a discursive perspective on the dilemmas of sameness and difference feminisms and their consequences for change projects. It explores how equal opportunity officers dealing with gender issues and introducing equality legislation in practice construct the meaning of equal opportunities. The analysis of the interpretative repertoires and ideological dilemmas drawn…

English / 10/10/2006

The Evolution of Organizational Cybernetics

The purpose of this contribution is to give an overview of the origins and further developments of Organizational Cybernetics, its transdisciplinary nature and its links to different areas of science, i.e., both natural sciences and the humanities.

[http://www.jams.or.jp/scm/contents/e-2006-8/2006-78.pdf]

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English / 28/09/2006

Bias Reducing Estimation of Treatment Effects in the Presence of Partially Mismeasured Data

Labor market policy evaluation studies often rely on a merged database from different administrative entities, where part of the information might be archived with varying quality in different sources. Suppose that one observes inter alia a variable of dubious quality for the entire population and the same variable for a subgroup, say the treated, with good quality from an extra…

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English / 24/09/2006

Financial performance of privately held family firms

The present text examines how the organizational input variable "family" and the financial output variable "return" are interrelated. This question is crucial since there are serious doubts brought forward by Schulze et al. (2003) whether family firms really exhibit the ideal precondition of low agency costs as hypothesized by Fama and Jensen (1983a and 1983b).…

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English / 18/09/2006

The Effect of Market Regimes on Style Allocation

We analyse time-varying risk premia and the implications for portfolio choice. Using Markov Chain Monte Carlo (MCMC) methods, we estimate a multivariate regime-switching model for the Carhart (1997) four factor model. We find two clearly separable Regimes with different mean returns, volatilities and correlations. In the High-Variance Regime, only value stocks deliver a good…

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English / 16/09/2006

The Simple Analytics of U.S. Antidumping Orders: Bureaucratic Discretion, Anti-Importer Bias, and The Byrd Amendment

Using a standard linear version of the Bertrand duopoly model of competition, I analyse the effect on firm pricing behaviour of three prominent features of the U.S. antidumping system. I identify the circumstances under which these features eliminate dumping entirely as well as their effects on the profitability of the import-competing and foreign firms. The Byrd Amendment, which has…

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English / 01/09/2006

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