Publications des institutions partenaires
Correcting for CBC model bias: a hybrid scanner data - conjoint model
This paper proposes a new model for studying the new product development process in an artificial environment. We show how connectionist models can be used to simulate the adaptive nature of agents' learning exhibiting similar behavior as practically experienced learning curves. We study the impact of incentive schemes (local, hybrid and global) on the new product development...
Institution partenaire
English / 01/01/2001
Strategic diversification and capacity utilization
This paper analyzes acquisitions resulting in a product line expansion of a firm. When the firm faces a non-stationary and stochastic demand in both the current and the new product line, switching between the production facilities may give diversification advantages. Switching between production facilities is similar to holding an inventory for both products. A case in the beverages...
Institution partenaire
English / 01/01/2001
Satiation in an international economy
The purpose of this paper is to explore the role of changes in the sectoral structure of world demand for the welfare implications of trade and international specialization. A two-countries two-goods model with external economies of scale is presented. Demand develops according to non-linear Engel-curves with phases of expansion and saturation. The economies of scale are exploited by...
Institution partenaire
English / 01/01/2001
A note on the common support problem in applied evaluation studies
Not available in German. This paper advocates the use of a nonparametric bounds analysis to check the robustness of the results of applied evaluation studies to the problem of a lack of common support. The typical responses by researchers of either ignoring it, or obtaining estimates only for the subpopulation within the common support, can both be misleading: Ignoring the problem...
Institution partenaire
English / 01/01/2001
Social Networks and Individual Perceptions: Explaining Differential Participation in Social Movements
This paper seeks to explain differential participation in social movements. It does so by attempting to bridge structural-level and individual-level explanations. We test a number of hypotheses drawn from the social networks and the rationalist perspectives on individual engagement by means of survey data on members of a major organization of the Swiss solidarity movement. Both...
Institution partenaire
English / 01/01/2001
Different issues, same process: Solidarity and ecology movements in Switzerland
Institution partenaire
English / 01/01/2001
Robust Lorenz Curves: A Semi-Parametric Approach
Lorenz curves and second-order dominance criteria are known to be sensitive to data contamination in the right tail of the distribution. We propose two ways of dealing with the problem: (1) Estimate Lorenz curves using parametric models for income distributions, and (2) Combine empirical estimation with a parametric (robust) estimation of the upper tail of the distribution using the...
Institution partenaire
English / 01/01/2001
Resistant Selection of the Smoothing Parameter for Smoothing Splines
Robust automatic selection techniques for the smoothing parameter of a smoothing spline are introduced. They are based on a robust predictive error criterion and can be viewed as robust versions of C p and cross-validation. They lead to smoothing splines which are stable and reliable in terms of mean squared error over a large spectrum of model distributions.
Institution partenaire
English / 01/01/2001
Robust Inference for Generalized Linear Models
By starting from a natural class of robust estimators for generalized linear models based on the notion of quasi-likelihood, we define robust deviances that can be used for stepwise model selection as in the classical framework. We derive the asymptotic distribution of tests based on robust deviances, and we investigate the stability of their asymptotic level under contamination. The...
Institution partenaire
English / 01/01/2001
Putting Robust Statistical Methods into Practice: Poverty Analysis in Tunisia
Poverty analysis often results in the computation of poverty indexes based on so-called poverty lines which can be region speci…c poverty lines. The poverty lines are made of two components, namely the amount of income to satisfy the food and the non food needs. For both components, one needs to estimate quantities such as local prices or the consummers' average basket, and this...
Institution partenaire
English / 01/01/2001
Distributional Dominance with Dirty Data
Distributional dominance criteria are commonly applied to draw welfare inferences about comparisons, but conclusions drawn from empirical implementations of dominance criteria may be inßuenced by data contamination. We examine a non-parametric approach to reÞning Lorenz-type comparisons and apply the technique to two important examples from the LIS data-base.
Institution partenaire
English / 01/01/2001
Stochastic Optimization in Asset & Liability Management: A Model for Non-Maturing Accounts
Institution partenaire
English / 01/01/2001
Stochastic linear programs with recourse and arbitrary multivariate distributions
Institution partenaire
English / 01/01/2001
The Impact of Non-profit Temping Agencies on Individual Labour Market Success in the West German State of Rhineland-Palatinate
The paper presents an econometric evaluation of the effects of subsidised non-profit temporary employment agencies - a programme of the West German active labour market policy - on individual labour market outcomes. The empirical analysis is based on individual data from files for computer-assisted job brokering in Rhineland-Palatine. Econometric estimates based on matching methods...
Institution partenaire
English / 01/01/2001
Public Sector Sponsored Continuous Vocational Training in East Germany: Institutional Arrangements, Participants, and Results of Empirical Evaluations
Not available in German. After unification of the East and West German economies in July 1990 the public sector devoted substantial resources to train the labour force of the former centrally planned East German economy. In this paper we describe the basic trends of the rules and regulations governing these efforts. We supplement this description with empirical stylized facts....
Institution partenaire
English / 01/01/2001
Identification and Estimation of Causal Effects of Multiple Treatments under the Conditional Independence Assumption
Not available in German. The assumption that the assignment to treatments is ignorable conditional on attributes plays an important role in the applied statistic and econometric evaluation literature. Another term for it is conditional independence assumption. This paper discusses identification when there are more than two types of mutually exclusive treatments. It turns out that...
Institution partenaire
English / 01/01/2001
The process of understanding in qualitative social research.
Institution partenaire
English / 01/01/2001
Picking winners or creating them? Revisiting the benefits of FDI in the Czech Republic
We examine whether publicly-traded Czech firms that received foreign direct investment (FDI) before the end of 1995 had higher levels of total factor productivity during 1995-8. Preliminary data analysis reveals that, as restructuring occurred, many Czech firms left the sample during 1995-8 and that the recipients of FDI tended to be larger firms. We show that failing to tackle the...
Institution partenaire
English / 01/01/2001
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