Kopenhagen und die Folgen – die Zukunft internationaler Klimapolitik – ein Kommentar
Wilfried Ehrenfeld
Wirtschaft im Wandel,
No. 1,
2010
Abstract
Viel Lärm um sehr wenig – so könnte man das Ergebnis der am 18. Dezember 2009 zu Ende gegangenen UN-Klimakonferenz zusammenfassen. In Kopenhagen trafen sich Vertreter aus fast 200 Staaten, um über die Zukunft der internationalen Klimapolitik zu verhandeln. Zentrales Ergebnis dieser Verhandlungen ist der „Copenhagen Accord“ – ein zwölf Punkte umfassendes kurzes Dokument. Im Wesentlichen enthält es das bereits Mitte 2009 in L’Aquila von den emissions-intensivsten Staaten beschlossene Ziel, die globale Erwärmung um nicht mehr als 2°C gegenüber vorindustriellen Zeiten ansteigen zu lassen, sowie die Erkenntnis, dass hierzu tiefe Einschnitte bei den Emissionen notwendig sind. Allerdings wurde weder das bereits 2007 festgelegte Ziel erreicht, bis Ende 2009 ein völkerrechtliches Nachfolgeabkommen für das Kyoto-Protokoll zu vereinbaren, noch enthält das Papier das im Vorfeld der Konferenz wiederholt genannte Ziel einer Halbierung des CO2-Ausstoßes bis 2050. Das Ergebnis von Kopenhagen kann bestenfalls die Grundlage für weitere internationale Verhandlungen sein. Wie bereits auf dem Weg zum Kyoto-Protokoll gestalten sich die Verhandlungen schwieriger und langwieriger als erhofft – ein kritisches Zeichen angesichts der immer schneller steigenden Emissionen in den Schwellenländern und den immer noch sehr hohen Emissionen in den Industriestaaten.
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Forecasting the CO2 certificate price risk
Henry Dannenberg, Wilfried Ehrenfeld
IWH Discussion Papers,
No. 5,
2008
Abstract
Die Modellierung des CO2Zertifikatepreisrisikos ist ein wichtiger Teilaspekt eines ganzheitlichen Managements von mit dem Emissionshandel verbundenen Unternehmensrisiken. Das Papier diskutiert ein Preisbildungsmodell, auf dessen Grundlage das Zertifikatepreisrisiko bewertet werden kann. Es wird davon ausgegangen, dass der Zertifikatepreis durch die erwarteten Grenzvermeidungskosten der Handelsperiode determiniert wird und stochastisch um dieses Niveau schwankt. Dieses Verhalten wird mit einem Mean-Reversion-Prozess modelliert. Aufgrund von Unsicherheiten bezüglich künftiger Umweltzustände ist jedoch zu vermuten, dass innerhalb einer Handelsperiode durch das Bekanntwerden neuer Informationen sprunghafte Veränderungen der erwarteten Grenzvermeidungskosten auftreten können, womit sprunghafte Verschiebungen des erwarteten Preisniveaus einhergehen. Neben der ParameterSchätzung ist es daher auch ein Ziel der Arbeit, den Mean-Reversion-Prozess so zu modifizieren, dass solche sprunghaften Veränderungen des erwarteten Reversion-Niveaus abgebildet werden können.
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An Assessment of Bank Merger Success in Germany
Michael Koetter
German Economic Review,
No. 2,
2008
Abstract
German banks have experienced a merger wave since the early 1990s. However, the success of bank mergers remains a continuous matter of debate.This paper suggests a taxonomy to evaluate post-merger performance on the basis of cost and profit efficiency (CE and PE). I identify successful mergers as those that fulfill simultaneously two criteria. First, merged institutes must exhibit efficiency levels above the average of non-merging banks. Second, banks must exhibit efficiency changes between merger and evaluation year above efficiency changes of non-merging banks. I assess the post-merger performance up to 11 years after the mergers and relate it to the transfer of skills, the adequacy to merge distressed banks and the role of geographical distance. Roughly every second merger is a success in terms of either CE or PE. The margin of success in terms of CE is narrow, as efficiency differentials between merging and non-merging banks are around 1 and 2 percentage points. PE performance is slightly larger. More importantly, mergers boost in particular the change in PE, thus indicating persistent improvements of merging banks to improve the ability to generate profits.
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The Role of the Human Capital and Managerial Skills in Explaining the Productivity Gaps between East and West
Wolfgang Steffen, Johannes Stephan
IWH Discussion Papers,
No. 11,
2007
Abstract
This paper assess determinants of productivity gaps between firms in the European transition countries and regions and firms in West Germany. The analysis is conducted at the firm level by use of a unique database constructed by field work. The determinants tested in a simple econometric regression model are focussed upon the issue of human capital and modern market-oriented management. The results are novel in as much as a solution was established for the puzzling results in related research with respect to a comparison of formal qualification between East and West. Furthermore, the analysis was able to establish that the kind of human capital and expertise mostly needed in the post-socialist firms are related to the particular requirements of a competitive marketbased economic environment. Finally, the analysis also finds empirical support for the role of capital deepening in productivity catch-up, as well as the case that the gaps in labour productivity are most importantly rooted in a more labour-intense production, which does not give rise to a competitive disadvantage.
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Stochastische Unternehmensmodelle als Kern innovativer Ratingsysteme
Ulrich Blum, Werner Gleißner, Frank Leibbrand
IWH Discussion Papers,
No. 6,
2005
Abstract
Auf der Grundlage einer Stichprobe von 105 sächsischen Unternehmen wird deren Zukunftsfähigkeit mit Hilfe einer neuen Ratingtechnologie analysiert. Diese basiert – neben klassischen Analysewerkzeugen – auf einer direkten Einbeziehung von Risikogesichtspunkten und einer stochastischen Unternehmensmodellierung. Die Ergebnisse belegen, daß das Verfahren gegenüber den bisherigen Ansätzen zusätzlichen und ökonomisch bedeutsamen Erklärungsgehalt besitzt. Über den Aspekt Basel-II hinaus ist es insbesondere möglich, langfristige strategisch angelegte Entwicklungsprozesse nachzuzeichnen.
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Firm-Specific Determinants of Productivity Gaps between East and West German Industrial Branches
Johannes Stephan, Karin Szalai
IWH Discussion Papers,
No. 183,
2003
Abstract
Industrial productivity levels of formerly socialist economies in Central East Europe (including East Germany) are considerably lower than in the more mature Western economies. This research aims at assessing the reasons for lower productivities at the firm level: what are the firm-specific determinants of productivity gaps. To assess this, we have conducted an extensive field study and focussed on a selection of two important manufacturing industries, namely machinery manufacturers and furniture manufacturers, and on the construction industry. Using the data generated in field work, we test a set of determinant-candidates which were derived from theory and prior research in that topic. Our analysis uses the simplest version of the matched-pair approach, in which first hypothesis about relevant productivity level-determinants are tested. In a second step, positively tested hypothesis are further assessed in terms of whether they also constitute firm-specific determinants of the apparent gaps between the firms in our Eastern and such in our Western panels. Our results suggest that the quality of human capital plays an important role in all three industrial branches assessed. Amongst manufacturing firms, networking activities and the use of modern technologies for communication are important reasons for the lower levels of labour productivity in the East. The intensity of long-term strategic planning on behalf of the management turned out to be relevant only for machinery manufacturers. Product and process innovations unexpectedly exhibit an ambiguous picture, as did the extent of specialisation on a small number of products in the firms’ portfolio and the intensity of competition.
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FDI Subsidiaries and Industrial Integration of Central Europe: Conceptual and Empirical Results
Boris Majcen, Slavo Radosevic, Matija Rojec
IWH Discussion Papers,
No. 177,
2003
Abstract
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Environmental policy under product differentiation and asymmetric costs - Does leapfrogging occur and is it worth it?
Jacqueline Rothfels
IWH Discussion Papers,
No. 124,
2000
Abstract
This paper studies the influence of environmental policies on environmental quality, domestic firms, and welfare. Point of departure is Porter’s hypothesis that unilateral environmental regulation may enhance the competitiveness of domestic firms. This hypothesis has recently received considerable support in theoretical analyses, especially if imperfectly competitive markets with strategic behavior on behalf of the agents are taken into account. Our work contributes to this literature by explicitely investigating the implications of asymmetric cost structures between a domestic and a foreign firm sector. We use a partial-equilibrium model of vertical product differentiation, where the consumption of a product causes environmental harm. Allowing for differentiated products, the domestic industry can either assume the market leader position or lag behind in terms of the environmental quality of the produced product. Assuming as a benchmark case that the domestic industry lags behind, we investigate the possibility of the government to induce leapfrogging of the domestic firm, i.e. a higher quality produced by the domestic firm after regulation than that of the competitor prior to regulation. It is shown that in the case of a cost advantage for the domestic firm in the production process the imposition of a binding minimum quality standard can serve as a tool to induce leapfrogging. In case of a cost disadvantage the same result can be achieved through an adequate subsidization of quality dependend production costs. Thus, careful regulation enables the domestic firm in both scenarios to better its competitive position against foreign competitors and to earn larger profits. Additionally, environmental quality and welfare can be enhanced.
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Explaining Regional Disparities in Housing Prices across German Districts
Lars Brausewetter, Stephan L. Thomsen, Johannes Trunzer
IZA Institute of Labor Economics,
March
2022
Abstract
Over the last decade, German housing prices have increased unprecedentedly. Drawing on quality-adjusted housing price data at the district level, we document large and increasing regional disparities: growth rates were higher in 1) the largest seven cities, 2) districts located in the south, and 3) districts with higher initial price levels. Indications of price bubbles are concentrated in the largest cities and in the purchasing market. Prices seem to be driven by the demand side: increasing population density, higher shares of academically educated employees and increasing purchasing power explain our findings, while supply remained relatively constrained in the short term.
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