Metropolregionen: Impulsgeber für Strukturwandel und wirtschaftliche Entwicklung

Urban centres and their surroundings often act as highly dynamic economic areas. Due to continuing urban migration, population growth as well as their heightened potential for employment, they have significant impact on Germany’s overall economic performance. Cities benefit from their neighbouring regions via a division of labour based on functional and spatial comparative advantages. Jobs in the service sector are concentrated in the city, while surrounding regions show a relatively high specialisation in the industrial sector. The economic development of metropolitan regions can be fostered particularly by improving supra-regional metropolitan functions related to education and to research and development. Moreover, the improvement of the intra-regional infrastructure also contributes to the economic strength of the whole metropolitan area.     

Europe's Leading Cities – Success Factors and Policy Perspectives

In Europe, economic activity is concentrated more and more in the major urban centres. At the same time, these cities are in a competition with one another. Across Europe they are contending for investors and qualified workers and searching for the most successful path to a dynamic economic future. Which cities in Europe have made the greatest economic progress in the past? What are the factors that have made some cities more successful than others? And what action can cities take to achieve greater economic growth in the future?     

Capital Cities in the New EU States—Economic Status Quo and Current Trends

In the course of the economic catching-up process of the new EU states, the capital cities of the countries in central and eastern Europe were the economically most successful regions in their countries. How distinct are economic disparities between the capitals and the rest of the countries today? What were the determinants of the related economic developments? And do current economic trends support the leading position of the capital cities in the new member states?      

Pricing and Cost Recovery for Internet Services: Practical Review,Classification, and Application of Relevant Models

Suitable pricing models for Internet services represent one of the main prerequisites for a successfully running implementation of a charging and accounting system. This paper introduces general aspects influencing the choice of a pricing model in practical situations and presents a survey as well as a classification of relevant and advanced approaches to be found in the scientific literature. First performance results on charging extensions within the Internet are presented, which are completed by a set of market price simulations for dynamic pricing models within the same implementation environment. Based on cost model investigations some detailed insights into price and cost issues from an Internet Service Provider's (ISP) point of view are given. Moreover, current challenges as well as problems are discussed in a practical context as investigated in the Swiss National Science Foundation project Charging and Accounting Technology for the Internet (CATI).     

Strukturwandel im deutschen Verarbeitenden Gewerbe

Auch wenn die Globalisierung gegenw?rtig aufgrund der Wirtschafts- und Finanzkrise an Dynamik verloren hat, wird sie die weltweite wirtschaftliche Entwicklung zukünftig weiterhin ma?geblich pr?gen. Mittel- bis langfristig wird die Internationalisierung der Wirtschaftsbeziehungen über den Handel und den Kapitalverkehr weiter voranschreiten und die Nachfrage nach Produkten des Verarbeitenden Gewerbes weltweit wieder expandieren. Hiervon k?nnen Industriestandorte in Deutschland profitieren, wenn ihnen der Strukturwandel gelingt. Dieser wird getragen von dem zunehmenden Gewicht forschungs- und wissensintensiver Branchen sowie von technologischen Ver?nderungen.     

Territorial disparities in Europe

Traditionally, EU policies have been focused on economic and social cohesion. Recently, the territorial dimension of regional disparities as an aspect of EU policy has gained importance. The European Spatial Development Perspective (ESDP), adopted in 1999, is meant to support a balanced development of the EU territory. Moreover, the European Commission addressed issues of territorial cohesion in its latest cohesion report. The present paper deals with territorial disparities and their current development in the EU. It analyses which kinds of region develop dynamically and offer favourable labour market conditions. The differences between rural and urban areas are a fundamental feature of territorial disparities in the EU and are of essential significance for the ESDP. The analysis deals with the question whether disparities between poor and rich regions as well as different growth trends and labour market conditions are still marked by the dualism between city and countryside. The authors would like to thank Elena Tcharykova for her excellent research assistance.     

Arrow: A flexible architecture for an accounting and charging infrastructure in the Next Generation Internet

Current pricing and charging methods for the Internet are not based on actual usage of this service, which leads to unfairness and more important, it does not deliver the right signals through financial incentives to network providers to upgrade critical links of their networks. The development of new multimedia applications and the convergence to an integrated services network will foster the tremendous growth of the Internet even more. With the Next Generation Internet not only technical services like bandwidth reservation will be introduced, but also new applications will emerge within the Internet. Charging the Internet in a fashion that provides feedback to users and providers has been proposed since the early '90s, however, only a few implementations and real-world examples are known today. This is due to subsidizing the Internet in its early stages and due to a technical development that did not care much about charging. With the recent redesign of the Internet protocol suite and discussions on multiple service classes in the Internet, architectures for charging and accounting have to be revisited, too. Economic models for the Internet cannot be tested fully and validated in non-real-world environments, because of the unknown user behavior. With this uncertainty over what models and pricing schemes to choose, it is evident that a specific charging and accounting platform will never be accepted by the community. In this paper a novel and flexible architecture for charging and accounting is proposed that provides a wide range of mechanisms and lets researchers experiment in an environment as close as possible to the targeted system. As a first step, four different pricing schemes are described, qualitatively assessed on the proposed platform, and a prototypical implementation performed. One of the economic models that have been implemented on Arrow is based on different service classes including reservation and recalculates prices dynamically depending on the traffic situation. This revised version was published online in August 2006 with corrections to the Cover Date.