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Design and analysis of evaluation studies

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English / 01/01/2003

Propensity score matching without conditional independence assumption - with an application to the gender wage gap in the UK

revised version of Discussion paper 2002-08#### Propensity score matching is frequently used for estimating average treatment effects. Its applicability, however, is not confined to treatment evaluation. In this paper it is shown that propensity score matching does not hinge on a selection on observables assumption and can be used to estimate not only adjusted means but also their…

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English / 01/01/2003

The Trade Act Of 2002: The New Fast-track Authority And Its Implications For The WTO E-commerce Negotiations

Preliminary Draft of PhD Thesis' Chap. 4, Version of December 20, 2002####

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English / 01/01/2003

A Cybernetic Model to Enhance Organizational Intelligence

The present paper focuses on the modeling of cognitive processes in organizations. This issue is approached from the perspective of Organizational Cybernetics, the science of control and communication applied to the management of organizations. First, the Team Syntegrity Model is described, which provides a structural architecture for processes of planning, knowledge generation and…

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English / 01/01/2003

Modeling with Archetypes: An Effective Approach to Dealing with Complexity

In the face of growing complexities, agents who lead or manage organizations must revert to better models. This proposition is based on the Conant/Ashby Theorem, which says that the results of a management process are determined by the quality of the model on which that process is based. The author proposes that archetype-based modeling is a promising way to enhance the behavioral…

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English / 01/01/2003

Public Policy for Efficient Education

We study the role of public policy in promoting efficiency in human capital accumulation. Agents accumulate human capital by allocating time to home study and school attendance. The return to time spent in school is subject to congestion. The individual also faces an aggregate externality in skill accumulation. We find that a tuition fee combined with personal stipends can correct…

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English / 01/11/2002

Relative Implied-Volatility Arbitrage with Index Options

This study investigates the efficiency of markets as to the relative pricing of similar risk by using implied volatilities of options on highly correlated indexes and a statistical arbitrage strategy to profit from potential mispricings. It first analyzes the interrelationships over time of the 3 most highly correlated and liquid pairs of US stock indexes. Based on this analysis, the…

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English / 01/11/2002

The Impact of Economic Sanctions on South African Exports

In the mid-1980s many nations imposed sanctions on South African exports, most of which were subsequently removed during 1991-3. I estimate the effect of eight industrialized economies' sanctions on their imports from South Africa. Outliers are found to strongly influence the parameter estimates. Failure to take account of them leads to the conclusion that sanctions by the (then…

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English / 01/11/2002

Self-confrontation interview with suicide attempters

Psychiatric and psychological assessment after parasuicide is characterized by a number of difficulties. The interview is a strategically complex task for the patients trying to accommodate the wishes of the psychiatrist/psychologist and their own goals. The psychiatrist/ psychologist on the other hand needs to gain information about the event and the patient's mental state, has…

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English / 12/10/2002

Microeconometric Evaluation of the Active Labour Market Policy in Switzerland

In the second part of the 1990's Switzerland conducted an ambitious active labour market policy (ALMP) encompassing a wide variety of programmes. We evaluate the effects of these programmes on the individual employment probability of potential participants. Our econometric analysis uses unusually informative data origi-nating from administrative unemployment and social security…

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English / 01/10/2002

‘Thou art a scholar, speak to it' - On Spaces of Speech : A Script

This article argues, based on the work of Bakhtin and de Certeau, that there is no aesthetics without politics and that all academic discourse and practices are enacted through aesthetic forms with inherently political and ethical effects. The article is written in a script-form with indications on how to perform it, acting out or ‘performing' in a direct way rather than adding…

English / 01/07/2002

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