Spillover Effects among Financial Institutions: A State-dependent Sensitivity Value-at-Risk Approach
Z. Adams, R. Füss, Reint E. Gropp
Abstract
In this paper, we develop a state-dependent sensitivity value-at-risk (SDSVaR) approach that enables us to quantify the direction, size, and duration of risk spillovers among financial institutions as a function of the state of financial markets (tranquil, normal, and volatile). Within a system of quantile regressions for four sets of major financial institutions (commercial banks, investment banks, hedge funds, and insurance companies) we show that while small during normal times, equivalent shocks lead to considerable spillover effects in volatile market periods. Commercial banks and, especially, hedge funds appear to play a major role in the transmission of shocks to other financial institutions. Using daily data, we can trace out the spillover effects over time in a set of impulse response functions and find that they reach their peak after 10 to 15 days.
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Technological Intensity of Government Demand and Innovation
Viktor Slavtchev, Simon Wiederhold
Abstract
Governments purchase everything from airplanes to zucchini. This paper investigates whether the technological intensity of government demand affects corporate R&D activities. In a quality-ladder model of endogenous growth, we show that an increase in the share of government purchases in high-tech industries increases the rewards for innovation, and stimulates private-sector R&D at the aggregate level. We test this prediction using administrative data on federal procurement performed in US states. Both panel fixed effects and instrumental variable estimations provide results in line with the model. Our findings bring public procurement within the realm of the innovation policy debate.
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Delineation of City Regions Based on Commuting Interrelations: The Example of Large Cities in Germany
Albrecht Kauffmann
IWH Discussion Papers,
No. 4,
2012
Abstract
The comparison of cities with regard to their economic or demographic development may yield misleading results, if solely the cities in their administrative borders are the object of consideration. Frequently, historical borders of cities neither conform to the contemporary settlement structures, nor do they consider the mutual dependencies between cities and parts of their hinterland. Therefore, it is often claimed to use city regions as objects of comparison or for the sake of urban planning. Commonly, the delineation of functional regions is based on commuting flows from the municipalities in the hinterland of the core cities directed to the cores. A municipality is regarded as belonging to a certain city region if the share of out-commuters from this municipality to the respective core in the total mass of those employees who reside in that municipality is the largest one, and if this share exceeds a certain threshold value. However, commuting flows in the opposite direction are not considered. The method presented here delineates city regions on the base of bidirectional commuting flows. Hereby, various modifications regarding the characteristics of the employment base, the possibility of overlaps of regions, the formation of polycentric city regions, and of the minimum threshold value of mutual connectivity are applied to the sample of 81 German cities with more than 100 000 inhabitants. Finally, the effects of different kinds of regionalisation on the coefficients of regional specialisation of these cities and city regions are demonstrated.
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Im Fokus: Löhne in Deutschland: Spreizung zwischen den Branchen nimmt zu
Birgit Schultz
Wirtschaft im Wandel,
No. 6,
2012
Abstract
Die Reallöhne in Deutschland sind viele Jahre in Folge gesunken bzw. stagnierten. Dies wird häufig als Grund sowohl für die günstige Wettbewerbsposition im Exportbereich als auch für die Konsumzurückhaltung der privaten Haushalte angeführt. Der Beitrag beschreibt die Lohnentwicklung in Deutschland in den vergangenen Jahren. Dabei wird deutlich, dass sich in den letzten Jahren Niedrig- und Hochlohnbranchen herausgebildet haben. Diese Lohnspreizung wurde letztlich durch Marktmechanismen hervorgerufen. So erhöhten sich die Reallöhne in Branchen mit guter Nachfrage stärker als in Branchen in einem schwierigen Marktumfeld. Die Durchsetzbarkeit von höheren Preisen für die angebotenen Güter dürfte ebenso wie Knappheiten auf sektoralen Arbeitsmärkten bei der Lohnfindung eine Rolle spielen.
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Specialization versus Diversification: Perceived Benefits of Different Incubation Models
Michael Schwartz, Christoph Hornych
International Journal of Entrepreneurship and Innovation Management,
No. 3,
2012
Abstract
Business incubator initiatives are a widespread policy instrument for the promotion of entrepreneurship, innovation and the development of new technology-based firms. Recently, there has been an increasing tendency for the more traditional diversified incubators to be superseded by incubators focusing their support elements, processes and selection criteria on firms from one specific sector, and its particular needs. Despite the increasing importance of such specialized incubators in regional innovation strategies, the question of whether they are advantageous has neither been investigated empirically nor discussed theoretically in detail. Drawing on large-scale survey data from 161 firms incubated in either diversified or specialized incubators in Germany, we investigate the benefits to firms of being part of a specialized business incubator as opposed to being part of a generalized business incubator. The investigation of the value-added contribution of specialized incubators, in particular regarding hardware components, business assistance, networking and reputation gains, reveals considerable differences compared to the more diversified incubation model.
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The Halle Economic Projection Model
Sebastian Giesen, Oliver Holtemöller, Juliane Scharff, Rolf Scheufele
Economic Modelling,
No. 4,
2012
Abstract
In this paper we develop an open economy model explaining the joint determination of output, inflation, interest rates, unemployment and the exchange rate in a multi-country framework. Our model -- the Halle Economic Projection Model (HEPM) -- is closely related to studies published by Carabenciov et al. Our main contribution is that we model the Euro area countries separately. In doing so, we consider Germany, France, and Italy which represent together about 70 percent of Euro area GDP. The model combines core equations of the New-Keynesian standard DSGE model with empirically useful ad-hoc equations. We estimate this model using Bayesian techniques and evaluate the forecasting properties. Additionally, we provide an impulse response analysis and a historical shock decomposition.
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Foreword: Competing: Important Stimuli for Knowledge Cities to Become Prosperous
Peter Franz
T. Yigitcanlar, K. Metaxiotis, J. Carrillo (eds), Building Prosperous Knowledge Cities. Policies, Plans and Metrics,
2012
Abstract
The author discusses the role of competitions in urban development strategies based on the cooperation of higher education institutions. The experience with similar strategies in regional policy and in innovation policy is reflected upon. After the presentation of some cases, the advantages and disadvantages of development strategies based on competitions are compared.
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5. Konferenz „Analysen und Politik für Ostdeutschland – aus der Forschung des IWH“ – ein Bericht
Gerhard Heimpold, Marie Ebert
Wirtschaft im Wandel,
No. 2,
2012
Abstract
Der Beitrag berichtet über den Inhalt der Tagung „Analysen und Politik für Ostdeutschland – aus der Forschung des IWH“ am 21. September 2011, die – wie bereits die vier Vorgängerveranstaltungen seit 2007 – ein wirtschaftspolitisches Fachpublikum mit neuen Forschungsergebnissen des IWH vertraut machte. Im ersten Teil der Tagung lag, beginnend mit dem Eröffnungsvortrag der Ministerin für Wissenschaft und Wirtschaft des Landes Sachsen-Anhalt, Prof. Dr. Birgitta Wolff, der thematische Schwerpunkt bei Fragen der Innovationsförderung, des Technologietransfers und der Wissensflüsse. Diese Faktoren gelten – nicht nur in Ostdeutschland – als wichtig für die wirtschaftliche Konvergenz oder Divergenz von Regionen. Anschließend wurden auf der makroökonomischen Ebene Faktoren analysiert, die das Wirtschaftswachstum in Ostdeutschland beeinflussen. Es folgte ein Beitrag über die Effekte des Programms „Stadtumbau Ost“ für den Immobilienmarkt, bei dem Wirkungen von Abriss- und Aufwertungsmaßnahmen untersucht worden waren. Der abschließende Beitrag hatte die künftige Ausgestaltung der EU-Strukturpolitik zum Gegenstand, die bislang die wirtschaftliche Entwicklung in den Neuen Ländern massiv unterstützt hat.
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Intellectual Property Rights Policy, Competition and Innovation
Daron Acemoglu, Ufuk Akcigit
Journal of the European Economic Association,
No. 1,
2012
Abstract
To what extent and in what form should the intellectual property rights (IPR) of innovators be protected? Should a company with a large technology lead over its rivals receive the same IPR protection as a company with a more limited advantage? In this paper, we develop a dynamic framework for the study of the interactions between IPR and competition, in particular to understand the impact of such policies on future incentives. The economy consists of many industries and firms engaged in cumulative (step-by-step) innovation. IPR policy regulates whether followers in an industry can copy the technology of the leader. We prove the existence of a steady-state equilibrium and characterize some of its properties. We then quantitatively investigate the implications of different types of IPR policy on the equilibrium growth rate and welfare. The most important result from this exercise is that full patent protection is not optimal; instead, optimal policy involves state-dependent IPR protection, providing greater protection to technology leaders that are further ahead than those that are close to their followers. This is because of a trickle-down effect: providing greater protection to firms that are further ahead of their followers than a certain threshold increases the R&D incentives also for all technology leaders that are less advanced than this threshold.
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