Higher-order learning

Experimental Economics - We design a novel experiment to study how subjects update their beliefs about the beliefs of others. Three players receive sequential signals about an unknown state of the...     

Some remarks on lower hemicontinuity of convex multivalued mappings

Summary. For a multifunction a condition sufficient for lower hemicontinuity is presented. It is shown that under convexity of graph it is possible for a multifunction to be not continuous only when a special representation of points of its domain is not feasible.Received: 4 September 2004, Revised: 10 January 2005, JEL Classification Numbers: C61.     

A FEW CRITICAL REMARKS ON GLOBALISATION, DEMOCRACY AND SPATIALITY

Globalisation has come in for a lot of criticism. With its emphasis on the unimpeded circulation of capital, it is increasingly regarded as a negative phenomenon that prompts 'creative destruction' of politico-economic spaces at various geographical scales. Globalisation is also thought to cause wage stagnation, widening inequalities, higher unemployment and greater insecurity as well as to undermine local democracy and environmental sustainability. This paper argues that those criticisms should not be unproblematically accepted and makes a case for a less biased and more nuanced interpretation.     

External Openness and Economic Growth in Developing Countries

This paper investigates empirically the relationship between two channels of external openness: international trade, foreign direct investment (FDI), and the rate of economic growth implied by the leader–follower model. The predictions of the theory are tested for the group of 97 developing countries in the period of 1974–2006 using static and dynamic panel data estimation methods. The estimation results show that both international trade and FDI positively contribute to growth.     

Copula dynamics in CDOs

Values of tranche spreads of collateralized debt obligations (CDOs) are driven by the joint default performance of the assets in the collateral pool. The dependence between the entities in the portfolio mainly depends on current economic conditions. Therefore, a correlation implied from tranches can be seen as a measure of the general situation of the credit market. We analyse the European market of standardized CDOs using tranches of the iTraxx index in the periods before and during the global financial crisis. We investigate the evolution of the correlations using different copula models: the standard Gaussian, the NIG, the double-t, and the Gumbel copula model. After calibration of these models, one obtains a time varying vector of parameters. We analyse the dynamic pattern of these coefficients. That enables us to forecast future parameters and consequently calculate Value-at-Risk measures for iTraxx Europe tranches.     

Remarks on the application of statistical games to technological development forecasting

This work presents the probability of determining a quantitative forecast of technological development S(t) defined by a set m of parameters S⁽¹⁾(t),S⁽²⁾(t),…,S^(m)(t), based on statistical game theory. Assuming that the coordinates S⁽ⁱ⁾(t) (i = 1, 2,…,m) of a forecasted vector S(t) are stochastic processes with given probabilistic characteristics, a formula of a function forecasting the value of a coordinate S⁽ⁱ⁾(t) of this vector can be obtained. This formula permits to determine a vector of forecasts _τT(x) of technological development S(t) at a given moment t = τ+T.     

Resultant forecasts

This article presents 1) the definition of a resultant forecasting function for a stochastic case, 2) construction of a function forecasting a stochastic process, and 3) construction, therefore, of a resultant forecasting function for two criteria and associated operations: minimum of the total probability of error and minimum risk function. The applicational significance of a resultant forecast is discussed in view of hierarchical systems design.     

Towards an accessible hotel: a case study of Scandic

This paper focuses on the issue of hotel accessibility and offers a case study of Scandic. Drawing on a qualitative-cum-quantitative methodology, it argues for a holistic approach to the idea of an accessible hotel. Specifically, it is based on semi-structured interviews and a questionnaire survey conducted among elderly and disabled guests. Accordingly, it underscores not only the importance of a corporate social responsibility (CSR)-centred organizational culture and employee extra-role behaviours, but also of customer satisfaction, loyalty and trust. This paper proposes an original and evidence-based conceptualization of hotel accessibility and offers several practical recommendations intending to turn hotels into truly accessible facilities.     

A proposition of generalized stochastic Milevsky–Promislov mortality models

The aim of this article is to propose a new approach to the estimation of the mortality rates based on two extended Milevsky and Promislov models: the first one with colored excitations modeled by Gaussian linear filters and the second one with excitations modeled by a continuous non-Gaussian process. The exact analytical formulas for theoretical mortality rates based on Gaussian linear scalar filter models have been derived. The theoretical values obtained in both cases were compared with theoretical mortality rates based on a classical Lee–Carter model, and verified on the basis of empirical Polish mortality data. The obtained results confirm the usefulness of the switched model based on the continuous non-Gaussian process for modeling mortality rates.     

The Reconstruction of South East Europe,the Stability Pact and the Role of the EU: An Overview

In the aftermath of the Kosovo crisis, the international community agreed on a Stability Pact to provide a framework that will contribute to the long-term security and stability of the whole region of South-East Europe (SEE). The idea is to bring the region closer to the European integration process through new institutional relations with the European Union (EU), as well as through the provision of assistance for reconstruction and development. As a contribution to the Stability Pact, the EU has announced the upgrading of its regional approach to the countries of the so called Western Balkans: Albania, Bosnia-Herzegovina, Croatia, Macedonia (FYROM), and Federal Republic of Yugoslavia (Serbia/Montenegro). Under the new Stabilization and Association Process all these countries could in principle become eligible to start negotiations for a new type of association agreement with the EU. The new Stabilization and Association Agreements would offer the countries in the region improved prospects for international trade with the EU, which would potentially provide increased export revenues to finance the reconstruction of the region from its own resources. However, in keeping with the previous regional approach, strict conditions have been laid down for countries to open negotiations on the new association agreements, including progress in democratization and economic reform. In addition, the new policy framework also emphasises the need for the development of intra-regional cooperation between the countries concerned. The paper presents a discussion and evaluation of the new policy approach towards regional cooperation and prospects for European integration in the context of the problems of economic reconstruction, democratic transition and consolidation in South East Europe.