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DIW Discussion Papers 880 / 2009
A budget-constrained buyer wants to purchase items from a shortlisted set. Items are differentiated by quality and sellers have private reserve prices for their items. Sellers quote prices strategically, inducing a knapsack game. The buyer's problem is to select a subset of maximal quality. We propose a buying mechanism which can be viewed as a game theoretic extension of Dantzig's greedy heuristic ...
2009| Ludwig Ensthaler, Thomas Giebe
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DIW Discussion Papers 862 / 2009
This paper outlines the importance of labor mobility for the improvement in allocating and distributing economic resources. We are faced with an increasing lack of skilled workers and a growing tendency of unemployment amongst the low-skilled. A central political objective for the future will not only be education policy but also the recruitment of high-skilled workers from international and European ...
2009| Klaus F. Zimmermann
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DIW Discussion Papers 850 / 2008
This paper analyzes the early research performance of PhD graduates in labor economics, addressing the following questions: Are there major productivity differences between graduates from American and European institutions? If so, how relevant is the quality of the training received (i.e. ranking of institution and supervisor) and the research environment in the subsequent job placement institution? ...
2008| Ana Rute Cardoso, Paulo Guimarães, Klaus F. Zimmermann
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DIW Discussion Papers 849 / 2008
The 2004 and 2007 enlargements of the European Union were unprecedented in a number of economic and policy aspects. This essay provides a broad and in-depth account of the effects of the post-enlargement migration flows on the receiving as well as sending countries in three broader areas: labour markets, welfare systems, and growth and competitiveness. Our analysis of the available literature and empirical ...
2008| Martin Kahanec, Klaus F. Zimmermann
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DIW Discussion Papers 815 / 2008
In this paper I assert that the entrepreneurial spirit can also exist in salaried jobs. I study the determinants of wages and the labor market success of two kinds of entrepreneurial women in Germany - self-employed and salaried businesswomen - and investigate whether ethnicity is important in these challenging jobs. Employing data from the German Socioeconomic Panel I estimate selection adjusted ...
2008| Amelie Constant
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DIW Discussion Papers 812 / 2008
The paper studies opinions and attitudes towards immigrants and minorities and their interactions with other barriers to minorities' economic integration. Specifically, we consider the minority experts' own perceptions about these issues, the veracities and repercussions of unfavorable attitudes of natives. Employing newly available data from the IZA Expert Opinion Survey 2007 we depict main trends ...
2008| Amelie Constant, Martin Kahanec, Klaus F. Zimmermann
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DIW Discussion Papers 809 / 2008
Our paper deals with modeling the effects of introducing a market-based tool for improving end-users' efficiency in an energy market which is already regulated through a cap-and-trade system for green house gas emissions and a quota system meant to improve competitiveness of energy produced using renewable resources. Our results show that the regulation of energy demand achieves its underlying objects ...
2008| Georg Meran, Nadine Wittmann
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DIW Discussion Papers 790 / 2008
In this paper we develop a dynamic structural life-cycle model of labor supply behavior which fully accounts for the effects of income tax and transfers on labor supply incentives. Additionally, the model recognizes the demand side driven rationing risk that might prevent individuals from realizing their optimal labor supply state, resulting in involuntary unemployment. We use this framework to study ...
2008| Peter Haan, Victoria Prowse, Arne Uhlendorff
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DIW Discussion Papers 781 / 2008
Mobility of workers involves flows of labour, human capital and other production factors and thus contributes to a more efficient allocation of resources. Besides these effects on allocative efficiency, migrant flows affect relative wages and also change the international and national distribution of skills and thereby equality in the receiving society. This paper suggests that skilled immigration ...
2008| Martin Kahanec, Klaus F. Zimmermann
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DIW Discussion Papers 760 / 2008
Vor zehn Jahren hat der deutsche Wissenschaftsrat mit seiner Forderung nach einer Verstärkung der akademischen Forschungsleistungen an den deutschen Wirtschaftsforschungsinstituten einen Regimewechsel eingeleitet. Der Anstoß wurde von der Leibniz-Gemeinschaft, der Dachgesellschaft der Institute, aufgenommen und in den regelmäßigen Evaluationsprozess eingebracht. Er gründet auf der zwingenden Erkenntnis, ...
2008| Rolf Ketzler, Klaus F. Zimmermann