Downward wage rigidity and job mobility

Using data from the German Socio-Economic Panel (GSOEP) we study whether being individually affected by downward wage rigidity has an effect on layoffs, quits and intra-firm mobility. Within a structural empirical model we estimate the individual extent of wage rigidity. This is expressed by the wage sweep-up, which measures by how much individual wage growth increases through the effect of downward wage rigidity when compared to a counterfactual labour market with flexible wage setting. We find robust negative effects of wage sweep-up on quits and layoffs and some evidence for a positive association of wage sweep-up and promotion opportunities. This is consistent with a core-periphery view of the labour force, where a core work force is protected from layoffs and wage cuts and at the same time enjoys good promotion opportunities. On the other side a peripheral work force provides a buffer for adjustment and suffers from both flexible wages, more insecure jobs and less internal promotion opportunities.      

Market efficiency in the Spanish derivatives markets: An empirical analysis

This paper analyzes Granger caUSAlity between daily prices of the Spanish stock index (Ibex 35) and its futures contract using Johansen cointegration methodology. The study differentiates between short-run and long-run caUSAlity. The empirical results prove that, in the short run, the futures price causes the spot price. However, the opposite is not true. On the other hand, long-run caUSAlity is embodied in the response of futures prices after deviations from the long-run equilibrium. These results say that during the period of study, the Spanish futures market behaved as an efficient market.     

Organizational identification as a determinant of customer orientation in service organizations

The marketing literature suggests that frontline employees are the central determinant of how customer-oriented a service organization is perceived to be by its customers. However, little is known about the contingencies of employees’ customer orientation (CO) beyond personality traits and broadly construed work attitudes. Based on the social identity approach, the present article develops a multilevel model whereby CO is the result of identity-based management of frontline employees. Two empirical studies in the travel industry show that employees’ CO depends on employees’ organizational identification and their leaders’ acting as role models of CO.     

Isolating the geodemographic characterisation of retail format choice from the effects of spatial convenience

The authors analyze the relationship between the geodemographic profile of consumers and retail format choice while accounting for the effects of spatial convenience. The proposed analytic model assumes that format choice is an implicit portion of store choice, such that a geodemographic profile functions as a determinant of format choice, and spatial convenience is a determinant of store choice. The results show that some geodemographic dimensions capture preferences for certain store formats and thereby facilitate retailers’ selection of geographic markets. The results also indicate that obviating the effect of spatial convenience may lead to biased estimations.     

The WTO Compatibility of the Economic Partnership Agreements between the EU and the ACP Countries

The economic partnership agreements (EPAs) to be negotiated between the European Union and six different ACP regions under the Cotonou Agreement are intended to be in conformity with WTO rules, i.e. satisfy GATT Article XXIV and GATS Article V. To what extent is this realistic? What would be the effects on the ACP countries?

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This article summarises the following study: A. Borrmann, H. Gro?mann, and G. Koopmann: The WTO Compatibility of the Economic Partnership Agreement between the EU and the ACP States, Study on behalf of the Federal Ministry of Economic Cooperation and Development and the Deutsche Gesellschaft für Technische Zusammenarbeit (GTZ) GmbH, Eschborn 2005, http://www.gtz.de/de/dokumente/enwto-epa-acp-2005.pdf.     

微生物强化采油技术研究现状及应用前景

介绍了微生物强化采油技术的基本概念、机理和发展现状，讨论了该技术的研究方法、优点及应用条件，并展望了微生物强化采油技术的应用前景。