Habilitation von Ralf Hohlfeld

Ohne Zusammenfassung     

Borda's method applied — the right to make a proposal

Borda's vote method was used by the French Academy from 1796 to 1803 when Napoleon got it abolished. In the laws and regulations of the Academy there are stipulations regarding the election of new members. The practice is demonstrated by some examples from the protocols. In fact, Borda presented two vote methods which he showed would give the same conclusion. The method which has not been in the limelight proves to be the same one as is used for selecting the best player in chess tournaments.     

DOES ORGANIZATION MATTER? A STUDY OF PHYSICIANS' IDEAL ORGANIZATION

It is a known phenomenon that it is difficult to make organizational changes within professional organizations. One recurring observation and experience from health care studies is that it is difficult to discuss the last organizational change with professionals because the most recent change is always perceived as the worst. In order to avoid this routine response, the authors of this article asked 56 senior physicians from the Swedish health care sector what their ideal organization looks like. The authors note that there is a strong institutionalized idea among the physicians of how health care should be organized. The image is not particularly complicated: the organization should be based on the meeting between doctor and patient. One conclusion in the article is that professionals dislike change, but nevertheless, they still want it. Actual change is not the problem – only changes that are not in compliance with the professionals' opinions of organization and management.     

Extending working hours: why not work 42 h rather than 38?—a CGE analysis for Germany

Faced with a record level of unemployment, the present debate in Germany is to extend the weekly hours of work. In this paper the employment effects of an economy-wide increase in weekly hours are quantified on the basis of a computable general equilibrium model for different specifications of the wage setting rule and the use of additional policy-induced public income. The simulation results back the argument of the opponents of longer working time that not more jobs will be created. However, when the higher tax revenues from GDP growth are used to reduce social security contributions, then the claim of the proponents that more jobs will be created can be supported.     

IS EQUALITY OF OPPORTUNITY POLITICALLY FEASIBLE?

We develop a political-economy model where the amount of education subsidies is determined in a majority vote and spending is financed by revenues from taxation. Our analysis demonstrates that limiting the extent of subsidization and thus excluding the poor from gaining enough education can be a political equilibrium. Despite being the main beneficiaries of subsidies, the politically decisive middle class hesitates to extend monetary benefits, since improved access to higher education diminishes the return to education. Moreover, a non-monotone relation between inequality and the extent of redistribution through tax-financed educational subsidies obtains.     

Derivation of the unconditional state-covariance matrix for exact maximum-likelihood estimation of ARMA models

Analytical expressions for the unconditional state-covariance matrix are combined with an efficient scheme for computing theoretical autocovariances, to simplify the exact maximum-likelihood estimation of multivariate ARMA models. Alternative state-space representations for pure AR and pure MA processes, giving rise to straightforward expressions for their unconditional state covariance, are suggested.     

Banana policy: a European perspective

European Union banana policies do not make economic sense, and hence criticism of these policies is justified. Some facts should, though, be remembered. If the EU had chosen free trade in bananas when the Single Market was established, certain producers both inside and outside the EU would have lost income, and it proved politically impossible to choose direct financial compensation. Also, the quantitative implications of the new EU banana regime may be less than sometimes assumed, as trade has not been reduced very much. The WTO's role is not to judge the economic merits of these policies, but their legal justification.