The Rise,Fall and Rebirth of Polish Political Geography

The article presents an outline of the history of Polish political geography. Its development as a science in fact began in the nineteenth century and its golden age lasted all the way through to the fall of the Polish state in 1939. The loss of independence in the period 1939/1945–1989 also brought with it the fall of political geography in Poland. After 1989, along with the restoration of freedom of research in Poland, a new period started in the history of Polish political geography.     

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?     

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.     

Estimation of demand and supply functions from univariate sample with known separation

It is shown that the joint unconditional density function of demand and supply is a computable function of parameters of the conditional density function of the observed quantity. Propositions of formulating unconditional and conditional disequilibrium measures are suggested.     

Does the use of professional legal assistance bring measurable benefits?

In this paper, the first attempt to quantify measurable effects of using legal advisory services is made with the use of a random sample and advanced econometric methods (robust MM-estimator). The estimates of parameters of an extended Mincer equation indicate that the appearance of legal problems results in lower earnings per person in a household and the choice of an active reaction to this legal problem results in a substantial reduction of losses.     

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.     

Market failure and stagflation: Some aspects of privatisation in Poland

The paper investigates causes of the stagflation phenomena which appeared in Poland in the period after the shortageflation, i.e. after February 1990. It is conjectured that one of the primary reasons for the appearance of the stagflation was substantial market uncertainty, which led to a market failure. The theoretical analysis is based on the Newbery-Stiglitz model of futures trading. This reveals that, in the presence of huge price variations a market is likely to fail if a substantial backwardation accompanies negative correlation between prices and quantities. The empirical evidence consists of testing market efficiency (weak and semi-strong forms) and the rational expectations hypothesis for the Polish consumption market and inflation in the period of shortageflation. It is found that the market survives the tests for weak efficiency but fails the test for semi-strong efficiency and rational expectations.     

Global stability of dynamic models

A necessary and sufficient condition for global stability of dynamic models is summability to one of the long-run elasticities and cointegration. The short-run coefficients automatically satisfy the homogeneity condition. A relevant restriction has to be imposed in the parameter estimation process; otherwise, the ratios of variables appearing in the model will tend to either infinity or zero, which is economic nonsense in most cases. This conclusion is particularly important for the ECM or VEC (SVEC) models that decompose behavior into long and short-run parts.