Local Government Control and Efficiency of the Water Industry: An Empirical Analysis of Water Suppliers in East Germany
Peter Haug
IWH Discussion Papers,
Nr. 3,
2007
Abstract
The paper deals with the effects of local governments’ interference with business affairs of publicly owned utilities. A partial model is presented to illustrate the consequences of “democratic control” for the public managers’ effort and the efficiency of local public production. To check the theoretical results empirically, a two-stage data envelopment analysis (DEA) is carried out for a sample of East German water suppliers. The organisational form is used as a measure for the degree of municipal control. The results of the OLS- and Tobit regression indicate an efficiency-enhancing effect of organisational forms with less distinctive control options for local politicians.
Artikel Lesen
Measurement Matters — Alternative Input Price Proxies for Bank Efficiency Analyses
Michael Koetter
Journal of Financial Services Research,
Nr. 2,
2006
Abstract
Most bank efficiency studies that use stochastic frontier analysis (SFA) employ each bank’s own implicit input price when estimating efficient frontiers. But at the same time, most studies are based on cost and/or profit models that assume perfect input markets. Traditional input price proxies therefore contain at least substantial measurement error. We suggest here two alternative input market definitions to approximate exogenous input prices. We have access to Bundesbank data, which allows us to cover virtually all German universal banks between 1993 and 2003. The use of alternative input price proxies leads to mean cost efficiency that is significantly five percentage points lower compared to traditional input prices. Mean profit efficiency is hardly affected. Across models, small cooperative banks located in large western states perform best while large banks and those located in eastern states rank lowest.
Artikel Lesen
The Effects of Shared ATM Networks on the Efficiency of Turkish Banks
H. Evren Damar
Applied Economics,
Nr. 6,
2006
Abstract
This study investigates whether forming shared ATM networks has yielded positive benefits for banks in Turkey by increasing their productive efficiency. Using a Data Envelopment Analysis (DEA) approach, pure technical and scale efficiency scores of Turkish banks are estimated and analysed for the period 2000–2003. The results suggest that although it is possible to realize positive effects through ATM sharing arrangements, there are multiple factors that determine which banks realize such benefits. The geographical distribution of shared ATMs between urban and rural markets and the level of competition between banks within urban areas are shown to be important determinants of differences in bank efficiency. This discrepancy between the gains associated with ATM sharing may have important implications concerning the adoption and sharing of new technology by banks in developing countries.
Artikel Lesen
Excess Volatility in European Equity Style Indices - New Evidence
Marian Berneburg
IWH Discussion Papers,
Nr. 16,
2006
Abstract
Are financial markets efficient? One proposition that seems to contradict this is Shiller’s finding of excess volatility in asset prices and its resulting rejection of the discounted cash flow model. This paper replicates Shiller’s approach for a different data set and extends his analysis by testing for a long-run relationship by means of a cointegration analysis. Contrary to previous studies, monthly data for an integrated European stock market is being used, with special attention to equity style investment strategies. On the basis of this analysis’ results, Shiller’s findings seem questionable. While a long-run relationship between prices and dividends can be observed for all equity styles, a certain degree, but to a much smaller extent than in Shiller’s approach, of excess volatility cannot be rejected. But it seems that a further relaxation of Shiller’s assumptions would completely eliminate the finding of an overly strong reaction of prices to changes in dividends. Two interesting side results are, that all three investment styles seem to have equal performance when adjusting for risk, which by itself is an indication for efficiency and that market participants seem to use current dividend payments from one company as an indication for future dividend payments by other firms. Overall the results of this paper lead to the conclusion that efficiency cannot be rejected for an integrated European equity market.
Artikel Lesen
Economies of Scope in European Railways: An Efficiency Analysis
Christian Growitsch, Heike Wetzel
IWH Discussion Papers,
Nr. 5,
2006
Abstract
In the course of railway reforms in the end of the last century, national European governments, as well the EU Commission, decided to open markets and to separate railway networks from train operations. Vertically integrated railway companies – companies owning a network and providing transport services – argue that such a separation of infrastructure and operations would diminish the advantages of vertical integration and would therefore not be suitable to raise economic welfare. In this paper, we conduct a pan-European analysis to investigate the performance of European railways with a particular focus on economies of vertical integration. We test the hypothesis that integrated railways realise economies of joint production and, thus, produce railway services on a higher level of efficiency. To determine whether joint or separate production is more efficient we apply a Data Envelopment Analysis super-efficiency bootstrapping model which relates the efficiency for integrated production to a virtual reference set consisting of the separated production technology. Our findings are that in a majority of European Railway companies exist economies of scope.
Artikel Lesen
Ineffiziente Strukturen in der deutschen Kommunal-
wirtschaft? – Das Beispiel der Trinkwasserversorgung in Ostdeutschland
Peter Haug
Wirtschaft im Wandel,
Nr. 2,
2006
Abstract
Die kleinteilig strukturierte deutsche Wasserwirtschaft wird von Ökonomen gerne als Beispiel für erhebliche Effizienzsteigerungspotentiale durch Unternehmenskonzentration angesehen, was sich beispielsweise mit der Ausnutzung von Größenvorteilen (economies of scale) und folglich einer kostengünstigeren Versorgung der Bevölkerung rechtfertigen lasse. Demgegenüber stehen aber die Ergebnisse etlicher empirischer Untersuchungen im Ausland, deren Befunde keine eindeutigen Rückschlüsse auf das Vorhandensein von Größenvorteilen in der öffentlichen Wasserversorgung zulassen. Eine aktuelle Untersuchung des IWH für die ostdeutsche Wasserwirtschaft liefert nun Ergebnisse einer Effizienzanalyse für deutsche Wasserversorger. Zu diesem Zweck wurde eine Data-Envelopment- Analyse (DEA) durchgeführt, wobei hier das Hauptaugenmerk auf der Abhängigkeit der sog. Skaleneffizienz von der Unternehmensgröße lag. Zur Absicherung der Ergebnisse wurden außerdem die Parameter einer aggregierten Produktionsfunktion der Wasserversorger mittels Regressionsanalyse geschätzt und daraus Rückschlüsse auf die Skalenelastizität gezogen. Die Ergebnisse der Data Envelopment Analyse legen nahe, daß nur sehr kleine Wasserversorger (jährliche Wasserabgabe weniger als 0,5 Mio. m3) mit Effizienzgewinnen durch Unternehmenszusammenschlüsse oder andere Formen der Ausweitung der Wasserabgabemenge rechnen können. Die Schätzergebnisse der aggregierten Produktionsfunktion bestätigten die Hypothese vom Vorliegen von signifikanten Größenvorteilen in der ostdeutschen Wasserversorgung ebenfalls nicht. Unter dem Gesichtspunkt einer möglichst kostengünstigen Versorgung der Bevölkerung durch Nutzung potentieller Größenvorteile kann zumindest auf der Basis dieser Ergebnisse und in Bezug auf die Trinkwasserversorgung nur eine flexiblere Handhabung, nicht jedoch eine Aufhebung des Örtlichkeitsprinzips der kommunalen Wirtschaftstätigkeit befürwortet werden.
Artikel Lesen
Factors accounting for the enactment of a competition law – an empirical analysis
Franz Kronthaler, Johannes Stephan
Einzelveröffentlichungen,
Nr. 6,
2005
Abstract
The paper is concerned with the factors that account for decisions to enact a national competition law. In a first step, the paper updates and enlarges the existing data bases of countries that have enacted a competition law. The paper then identifies and discusses possible factors that influence the decision to enact a competition law. In a third step, the method of panel-data logit analysis is employed to test a set of hypothesis pertaining to the factors across the time dimension and across countries. The results of this analysis are interpreted in terms of significance and in terms of the sign of their influence on the probability of a country to enact. Given generality of the analysis, the results can shed light on the probability of individual countries, and in particular developing countries, to actually take the step of enactment.
Artikel Lesen
Eastern Germany in the process of catching-up: the role of foreign and Western German investors in technological renewal
Jutta Günther, Oliver Gebhardt
Eastern European Economics,
Nr. 3,
2005
Abstract
Foreign direct investment as a means to support system transformation and the ongoing process of catching-up development has caught researcher’s attention for a number of Central and Eastern European countries. Not much research, however, has been carried out for East Germany in this respect although FDI plays an important role in East Germany too. Descriptive analysis by the use of unique survey data shows that foreign and West German affiliates perform much better with respect to technological capability and labor productivity than domestic companies in East Germany. The results of the regression analysis, however, show that it is not the status of ownership as such that forms a significant determinant of innovativeness in East Germany but rather general firms specific characteristics attached to it such as firm size, export-intensity, technical state of the equipment, and R&D activities. Due to the fact that foreign and West German affiliates perform better with respect to exactly all of these characteristics, they can be considered as a means to support the process of technological renewal and economic development.
Artikel Lesen
Cross-border Banking and Transmission Mechanisms in Europe: Evidence from German Data
Claudia M. Buch
Applied Financial Economics,
Nr. 16,
2004
Abstract
International activities of commercial banks play a potential role for the transmission of shocks across countries. This paper presents stylized facts of the integration of European banking markets and analyses the potential of banks to transmit shocks across countries. Although the openness of banking systems has increased, bilateral financial linkages among EU countries are relatively small. The exceptions are claims of German banks on a number of smaller countries. These data are used for an analysis of the determinants of cross-border lending patterns.
Artikel Lesen
Technological capability of foreign and West German investors in East Germany
Jutta Günther
IWH Discussion Papers,
Nr. 189,
2004
Abstract
Foreign direct investment (FDI) plays an important role for countries or regions in the process of economic catching-up since it is assumed – among other things – that FDI brings in new production technology and knowledge. This paper gives an overview about the development of FDI in East Germany based on official data provided by the Federal Bank of Germany. The investigation also includes a comparison of FDI in East Germany to Central East European countries. But the main focus of the paper is an analysis of the technological capability comparing majority foreign and West German owned firms to majority East German owned firms. It shows that foreign and West German subsidiaries in East Germany are indeed characterized by superior technological capability with respect to all indicators looked at (product innovation, research & development, organizational changes etc.).
Artikel Lesen
