ZEW Discussion Papers

Researchers at the ZEW participate in scientific debates by publishing their papers. The papers are predominantly in English (marked). For the German papers an English abstract is available. The contributions are intended for a final publication in special interest titles. The discussion papers can be downloaded as PDF or PostScript files starting from 1.1.1998. They aimed at national and international target groups.

  1. ZEW Discussion Paper No. 98-22 // 1998

    Industrial Change, Stability of Relative Earnings, and Substitution of Unskilled Labor in West-Germany

    The differential labor market developments in Germany and in the United States are often cited to support the hypothesis of a trade-off between more jobs for unskilled workers on the one hand, and a less equal…

  2. ZEW Discussion Paper No. 98-21 // 1998

    Lending Relationships in Germany - Empirical Evidence from Survey Data

    We examine empirically the role of lending relationships in determining the costs and collateral requirements for external funds. The data originate from a recently concluded survey of small and medium-sized…

  3. ZEW Discussion Paper No. 98-20 // 1998

    Hedging Langfristiger Lieferverpflichtungen mit kurzfristigen Futures : Möglich oder Unmöglich ?

    Since the crisis of the Metallgesellschaft AG in 1993, their roll over hedging strategy with short-term oil futures has been a subject of controversal debate. Main issues of this controversy are whether a woll…

  4. ZEW Discussion Paper No. 98-19 // 1998

    Electoral Competition under Media Influence

    We suggest a model of electoral competition between two parties which is extended by a third player: mass media. The classical one-dimensional competition model is changed by introducing an issue-specific…

  5. ZEW Discussion Paper No. 98-18 // 1998

    Why Hedge ? - A Critical Review of Theory and Empirical Evidence

    Finance theory does not provide a comprehensive framework for explaining risk management within the imperfect financial environment in which firms operate. Corporate managers, however, rank risk management as…

  6. ZEW Discussion Paper No. 98-16 // 1998

    Socio-economic and demographic factors of crime in Germany: Evidence from panel data of the German States

    Our study is based on the traditional Becker-Ehrlich deterrence model, but we analyse the model in the face of currently discussed factors of crime like demographic changes, youth-unemployment and income…

  7. ZEW Discussion Paper No. 98-15 // 1998

    Tradable SO2-Permits in the European Union: A Practicable Scheme for Public Utilities

    In this paper, a practicable scheme of SO2-emission permits for European power producers is developed. Background is the second UN-ECE Sulphur Protocol from 1994 (Protocol of Oslo). After discussing some…

  8. ZEW Discussion Paper No. 98-14 // 1998

    Innovationsstrategien und Forschungsaktivitäten ostdeutscher Unternehmen

    This paper deals with the innovation behavior and the R&D activities at the firm level in East Germany. The theoretical and empirical analyses lead to the conclusion that the relatively low level of the R&D…