Initial directors of international R&D laboratories

Technology intensive companies establish new R&D laboratories in regions of high innovation and near centers of scientific excellence. Identifying the right R&D director to head up such greenfield investments is central to the success or failure of the new lab. Analyzing 162 interviews with senior R&D managers, we identify eight different directorship profiles. Examples of new R&D sites and their directors include IBM, Daimler, Leica, Microsoft, Xerox, Lucent and Ciba. The initial mission and the intraorganizational and intraregional integration of the new lab are principal factors for director selection, determining expatriate or national management, cultural and ethnic familiarity, as well as local or international transfers. The analysis of succeeding R&D directors indicates a trend towards locally rooted yet organizationally competent R&D managers. The paper concludes with desired qualifications of director candidates for newly established international R&D sites.     

Public input competition and agglomeration

This paper analyzes the impact of public input competition in a New Economic Geography framework. It is shown that regional competition yields an overprovision of public inputs if trade costs are sizable while it leads to underprovision if regions are highly integrated. Moreover, public input competition assures a dispersion of industry as long as trade costs are high but induces agglomeration even for ex ante identical regions if trade costs have fallen below a certain value. Finally, a trade-off between regional convergence and efficiency arises since the efficient distribution of regional infrastructure requires full agglomeration for sufficiently low trade costs.     

Optimal portfolios when stock prices follow an exponential Lévy process

We investigate some portfolio problems that consist of maximizing expected terminal wealth under the constraint of an upper bound for the risk, where we measure risk by the variance, but also by the Capital-at-Risk (CaR). The solution of the mean-variance problem has the same structure for any price process which follows an exponential Lévy process. The CaR involves a quantile of the corresponding wealth process of the portfolio. We derive a weak limit law for its approximation by a simpler Lévy process, often the sum of a drift term, a Brownian motion and a compound Poisson process. Certain relations between a Lévy process and its stochastic exponential are investigated.Received: January 2003Mathematics Subject Classification: Primary: 60F05, 60G51, 60H30, 91B28; secondary: 60E07, 91B70JEL Classification: C22, G11, D81We would like to thank Jan Kallsen and Ralf Korn for discussions and valuable remarks on a previous version of our paper. The second author would like to thank the participants of the Conference on Lévy Processes at Aarhus University in January 2002 for stimulating remarks. In particular, a discussion with Jan Rosinski on gamma processes has provided more insight into the approximation of the variance gamma model.     

Mehr Beschäftigung durch weitere Arbeitsmarktreformen?

Die „Agenda 2010“ hat den Arbeitsmarkt in Deutschland tiefgreifend reformiert. Basiert der jüngste Aufschwung auf diesen Reformen? Sollten die Reformen fortgeführt werden? Wie beschreibt die moderne Arbeitsmarkttheorie den Zusammenhang zwischen Arbeitsmarktinstitutionen und Arbeitslosigkeit? Was ergeben empirische Untersuchungen dieses Zusammenhangs und was l?sst sich daraus für die deutsche Wirtschafts- und Sozialpolitik ableiten? Erik Kl?r, 29, Dipl.-Volkswirt, ist Doktorand an der Universit?t Trier, Lehrstuhl für Geld, Kredit und W?hrung; Dr. Ulrich Fritsche, 39, ist Juniorprofessor an der Universit?t Hamburg, Department Wirtschaft und Politik und Mitarbeiter des Deutsches Instituts für Wirtschaftsforschung (DIW Berlin).     

EXPLORING ALL VAR ORDERINGS FOR CALCULATING SPILLOVERS? YES,WE CAN!—A NOTE ON DIEBOLD AND YILMAZ (2009)

Diebold and Yilmaz (Economic Journal 2009; 119 ; 158–171) introduce the spillover index to measure linkages between international financial markets. As their index depends on the ordering of the variables in the underlying VAR model, they check robustness by computing the index for a small number of randomly chosen permutations, stating that it was impossible to explore the huge number of renumerations. Building on a new divide‐and‐conquer strategy, we provide an algorithm for swiftly calculating the spillover index's maximum and minimum over all renumerations. Using this new algorithm, we find that the true range of the spillover index can be up to three times as large as estimated by Diebold and Yilmaz. Copyright © 2013 John Wiley & Sons, Ltd.     

The Business Value of Process Flexibility

Promising to cope with increasing demand variety and uncertainty, flexibility in general and process flexibility in particular are becoming ever more desired corporate capabilities. During the last years, the business process management and the production/operations management communities have proposed numerous approaches that investigate how to valuate and determine an appropriate level of process flexibility. Most of these approaches are very restrictive regarding their application domain, neglect characteristics of the involved processes and outputs other than demand and capacity, and do not conduct a thorough economic analysis of process flexibility. Against this backdrop, the authors propose an optimization model that determines an appropriate level of process flexibility in line with the principles of value-based business process management. The model includes demand uncertainty, variability, criticality, and similarity as process characteristics. The paper also reports on the insights gained from applying the optimization model to the coverage switching processes of an insurance broker pool company.     

Investition in die Zukunft? Zur Entwicklung des deutschen Auslandsvermögens

Germany’s substantial current account surpluses are an ongoing subject of debate, both at the domestic and the European/ global level. Advocates of high surpluses emphasise the need to accumulate foreign wealth in order to finance future investment and consumption expenditures of an ageing population. This contribution gauges the profitability of Germany’s foreign wealth. It identifies large valuation losses to the tune of half a trillion euros in recent years as well as a persistently adverse trend in previous decades. This unfavourable development as well as historically low refinancing costs point to the comparatively greater benefits of a domestic investment offensive aiming to equip Germany for central long-term challenges.