How Does Industry Specialization Affect the Efficiency of Regional Innovation Systems?
Michael Fritsch, Viktor Slavtchev
Jena Economic Research Papers, Nr. 2008-058,
No. 58,
2008
Abstract
This study analyzes the relationship between the specialization of a region in certain industries and the efficiency of the region in generating new knowledge. The efficiency measure is constructed by relating regional R&D input and output. An inversely u-shaped relationship is found between regional specialization and R&D efficiency, indicating the presence of externalities of both Marshall and Jacobs’ type. Further factors influencing efficiency are spillovers within the private sector as well as from public research institutions. The impact of both the specialization and the additional factors is, however, different for regions at different efficiency levels.
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Capital Stock Approximation using Firm Level Panel Data: A Modified Perpetual Inventory Approach
Steffen Müller
Jahrbücher für Nationalökonomie und Statistik,
No. 4,
2008
Abstract
Many recent studies exploring conditional factor demand or factor substitution issues use firm level panel data. A considerable number of establishment panels contains no direct information on the capital input, necessary for production or cost function estimation. Incorrect measurement of capital leads to biased estimates and casts doubt on any inference on output elasticities or input substitution properties. The perpetual inventory approach, commonly used for long panels, is a method that attenuates these problems. In this paper a modified perpetual inventory approach is proposed. This method provides more reliable measures for capital input when short firm panels are used and no direct information on capital input is available. The empirical results based on a replication study of Addison et al. (2006) support the conclusion that modified perpetual inventory is superior to previous attempts in particular when fixed effects estimation techniques are used. The method thus makes a considerable number of recently established firm panels accessible to more sophisticated production function or factor demand analyses.
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Has the International Fragmentation of German Exports Passed its Peak?
Udo Ludwig, Hans-Ulrich Brautzsch
Intereconomics,
No. 3,
2008
Abstract
In the second half of the nineties the import content of German exports increased considerably. The article examines whether this trend has continued up to the present. A second question concerns the purpose of the imports. Are they intermediate inputs for the production of export goods or imports destined for immediate re-exports? Finally, it must be asked whether these events are singular: Is only Germany among the industrially developed West European countries affected by this development, or are other nations also? These issues are studied by means of tables and the standard static open model of input-output-analysis.
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The Stability of Bank Efficiency Rankings when Risk Preferences and Objectives are Different
Michael Koetter
European Journal of Finance,
No. 2,
2008
Abstract
We analyze the stability of efficiency rankings of German universal banks between 1993 and 2004. First, we estimate traditional efficiency scores with stochastic cost and alternative profit frontier analysis. Then, we explicitly allow for different risk preferences and measure efficiency with a structural model based on utility maximization. Using the almost ideal demand system, we estimate input- and profit-demand functions to obtain proxies for expected return and risk. Efficiency is then measured in this risk-return space. Mean risk-return efficiency is somewhat higher than cost and considerably higher than profit efficiency (PE). More importantly, rank–order correlation between these measures are low or even negative. This suggests that best-practice institutes should not be identified on the basis of traditional efficiency measures alone. Apparently, low cost and/or PE may merely result from alternative yet efficiently chosen risk-return trade-offs.
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Neuere Anwendungsfelder der Input-Output-Analyse in Deutschland
Udo Ludwig
IWH-Sonderhefte,
No. 3,
2007
Abstract
Der vorliegende Band umfasst die aktualisierte Fassung aller Vorträge, die auf dem Workshop vom 16. bis 17. Februar 2006 zu drei thematischen Schwerpunkten gehalten worden sind: Erstellung von Input-Output-Tabellen, Anwendungen der Input-Output-Methode und Preise in der Input-Output-Rechnung. Schon traditionell gibt einer der Autoren aus dem Statistischen Bundesamt im ersten Schwerpunkt einen Überblick zum aktuellen Stand der amtlichen Input-Output-Rechnung in Deutschland. Im Mittelpunkt des Beitrages von P. Bleses steht dabei das Berichtsjahr 2002, für das die einzelnen Tabellentypen – Aufkommenstabelle, Verwendungstabelle und symmetrische Güterverflechtungstabelle – in aggregierter Form dargestellt und erläutert werden. Im zweiten Beitrag berichten R. Fremdling und R. Stäglin über Fortschritte bei der Erstellung einer historischen Input-Output-Tabelle für das Deutsche Reich im Jahr 1936. Sie präsentieren einen aktualisierten Ausschnitt ihrer Tabelle und stellen Vergleiche mit der Industriestruktur im früheren Bundesgebiet zu Beginn der 1950er Jahre an. Sie zeigen den Einfluss von Aufrüstung, Krieg und Zerstörung auf die wirtschaftliche Entwicklung in Deutschland in zwei Jahrzehnten. Der zweite Schwerpunkt liegt auf verschiedenen Anwendungsfeldern der Input-Output-Methode. Ein Beitrag kommt aus den Umweltökonomischen Gesamtrechnungen. H. Mayer greift sich die Abbildung des Bereichs Energie heraus und führt eine energetische Input-Output-Analyse aus. Im zweiten Beitrag geht A. Diekmann dem Zusammenhang zwischen Konsum und Verkehr nach. Auf der Grundlage der deutschen Input-Output-Tabelle für das Jahr 2000 wird nicht nur die von den Ausgaben der privaten Haushalte für Verkehrsleistungen ausgehende direkte Abhängigkeit der einzelnen Verkehrszweige vom Konsum, sondern auch die indirekte, die in den anderen Güterkäufen und in deren Wert enthalten ist, untersucht. Der dritte Schwerpunkt wendet sich der Rolle der Preise bei der Abbildung der Transaktionen in den Volkswirtschaftlichen Gesamtrechnungen und den Input-Output-Tabellen zu. Die offenen Flanken der Deflationierung anhand der Vorjahrespreisbasis diskutiert U.-P. Reich in seinem Beitrag und setzt ihr die Idee der Volumensrechnung in Vorjahrespreisen mit anschließender Deflationierung anhand der im Zeitablauf geänderten Kaufkraftparitäten entgegen. Anders als in der Konzeptdebatte greift der Beitrag von H.-U. Brautzsch und U. Ludwig auf eine Zeitreihe von deutschen Input-Output-Tabellen für die 1990er Jahre zurück, die anhand einer Festpreisbasis, nämlich der Preise aus dem Jahr 1995, deflationiert wurden. Am Beispiel der in den vergangenen Jahren heftig diskutierten Importabhängigkeit der deutschen Exporte zeigen sie, dass die grundsätzliche Aussage zum Anstieg des Importgehalts der Exportgüterproduktion auf gesamtwirtschaftlicher Ebene invariant gegenüber der Analyse zu jeweiligen oder konstanten Preisen ist.
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Globalisierung und Beschäftigung – eine Untersuchung mit der Input-Output-Methode.
Udo Ludwig, Hans-Ulrich Brautzsch
IMK Studies Nr. 1/2008,
No. 1,
2008
Abstract
In the course of globalization imports play a more and more important role as inputs for national production. In the wake of this development, domestic products are substituted by imported goods and jobs are moved abroad. However, this enables domestic companies to become more competitive and to improve their position in national and international markets. Applying input-output techniques this paper shows that, although imports have risen considerably, the increase in domestic production induced by exports had an overall positive impact on the German economy. This holds not only for the trade balance of production sectors that are oriented to export activities, but for the trade balance as a whole. Overall, high export surpluses were accompanied by increases in value added. Furthermore, especially in the second half of the last decade employment benefited much; while the rising import of intermediate and finished goods has caused many job cuts, on balance the increase in employment in the wake of the strong export expansion has outdone the losses.
Even though many industrialized economies in Europe have made similar experiences, the impacts on job markets differed considerably. For example, while the strength of the increase in employment in the Netherlands was similarly to that in Germany, labour market improvements in France were much weaker, not least due to noticeably lower export surpluses.
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Estimating Monetary Policy Rules for South Africa
Tobias Knedlik
South African Journal of Economics,
2006
Abstract
The paper combines the estimation of the Monetary Conditions Index (MCI) with the theoretic modelling of optimal monetary policy in South Africa. The idea that monetary policy is not only interested in optimal monetary conditions but also in external stability, provides the basis for the analysis. The paper introduces the concept of the MCI and estimates the relative influence of interest rates and exchange rates on the output gap. The estimated weights are 1.9:1. This estimation result is used to specify operating target rules for South African monetary policy.
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Threshold for employment and unemployment. A spatial analysis of German RLM's 1992-2000
Christian Dreger, Reinhold Kosfeld
External Publications,
2006
Abstract
Changes in production and employment are closely related over the course of the business cycle. However, as exemplified by the laws of Verdoorn (1949, 1993) and Okun (1962, 1970), thresholds seem to be present in the relationship. Due to capacity reserves of the firms, output growth must exceed certain levels for the creation of new jobs or a fall in the unemployment rate. While Verdoorn's law focuses on the growth rate of output sufficient for an increase in employment, in Okun's law, the fall in the unemployment rate becomes the focus of attention. In order to assess the future development of employment and unemployment, these thresholds have to be taken into account. They serve as important guidelines for policymakers. In contrast to previous studies, we present joint estimates for both the employment and unemployment threshold. Due to demographic patterns and institutional settings on the labour market, the two thresholds can differ, implying that minimum output growth needed for a rise in employment may not be sufficient for a simultaneous drop in the unemployment rate. Second, regional information is considered to a large extent. In particular, the analysis is carried out using a sample of 180 German regional labour markets, see Eckey (2001). Since the cross-sections are separated by the flows of job commuters, they correspond to travel-to-work areas. Labour mobility is high within a market, but low among the entities. As the sectoral decomposition of economic activities varies across the regions, the thresholds are founded on a heterogeneous experience, leading to more reliable estimates.The contribution to the literature is twofold. First, to the best of our knowledge, no previous paper has investigated a similar broad regional dataset for the German economy as a whole before. By using a panel dataset, information on the regional distributions around the regression lines as well as theirs positional changes is provided for each year. Second, the methods applied are of new type. They involve a mixture of pooled and spatial econometric techniques. Dependencies across the regions may result from common or idiosyncratic (region specific) shocks. In particular, the eigenfunction decomposition approach suggested by Griffith (1996, 2000) is used to identify spatial and non-spatial components in regression analysis. As the spatial pattern may vary over time, inference is conducted on the base of a spatial SUR model. Due to this setting, efficient estimates of the thresholds are obtained. With the aid of a geographic information system (GIS) variation of the spatial components can be made transparent. With Verdoorn’s and Okun’s law the figures show some significant patterns become obvious over time. In respect to Verdoorn’s law, for instance, a stripe of high values in the north-western part from Schleswig-Holstein via Lower Saxony and North Rhine Westfalia to Rhineland Palatinate is striking in all years but 1994 and 1995. In most periods the spatial component is likewise concentrated in Saxony. Clusters of low values can be found in northern Bavaria and, in some periods, in Thüringen and Mecklenburg-Vorpommern. Other parts of Germany appear to be more fragmented consisting of relative small clusters of low, medium and high values of the spatial component. With Okun’s law some changing spatial patterns arise. In all, spatially filtering provides valuable insights into the spatial dimensions of the laws of Verdoorn and Okun.
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The relationship between unemployment and output in post-communist countries
Hubert Gabrisch, Herbert Buscher
Post-Communist Economies,
2006
Abstract
Unemployment is still disappointingly high in most Central and East European countries, and might be a reflection of the ongoing adjustment to institutional shocks resulting from systemic transition, or it may be caused by high labour market rigidity, or aggregate demand that is too weak. In this paper we have investigated the dynamics of unemployment and output in those eight post-communist countries, which entered the EU in 2004. We used a model related to Okun’s Law; i.e. the first differences in unemployment rates were regressed on GDP growth rates. We estimated country and panel regressions with instrument variables (TSLS) and applied a few tests to the data and regression results. We assume transition of labour markets to be accomplished when a robust relationship exists between unemployment rate changes and GDP growth. Moreover, the estimated coefficients contain information about labour market rigidity and unemployment thresholds of output growth. Our results suggest that the transition of labour markets can be regarded as completed since unemployment responds to output changes and not to a changing institutional environment that destroys jobs in the state sector. The regression coefficients have demonstrated that a high trend rate of productivity and a high unemployment intensity of output growth have been occurring since 1998. Therefore, we conclude that labour market rigidities do not play an important role in explaining high unemployment rates. However, GDP growth is dominated by productivity progress and the employment-relevant component of aggregate demand is too low to reduce the high level of unemployment substantially.
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