Search results

This paper seeks to present an overview and some preliminary results of the DAMe project. The main goal of this project was to define a unified authentication and authorisation system for federated services hosted in the eduroam network.

This paper presents the main initiatives and technologies related to the DAMe project and some first designs that show how the main goals are already being achieved.

At present, there are several activities of DAMe in progress, such as the design and implementation of a multiplatform PEAP supplicant, the middleware for managing the SSO tokens and the design of new common services for eduGAIN.

This paper is based on results from the DAMe project and the knowledge of the authors and will be of interest to those in the same field.

This paper aims to present a viable approach for designing and implementing a generic per‐fee‐link framework. It also aims to design this framework to be used with any payment protocol and test it with two existing ones.

The paper presents a per‐fee‐link framework based on several generic components. These components have been developed and tested in order to prove the viability of the proposed framework.

The results show that is possible to establish a per‐fee‐link framework. Four core components are defined: first, the different modules needed for browsers and web servers, second, an extended payment protocol (EPP), which negotiates the payment protocol to use and encapsulates its related messages, third, an API for e‐wallets, which is independent of the payment protocol, to incorporate the protocols to use with EPP and finally, the definition of a per‐fee‐link that associates payment information to a link.

The framework presented shows a uniform way of using payment protocols that can increase the trust of end users. Furthermore, it has been developed and tested.

The contribution describes the components needed for supporting the framework. Its feasibility has been checked through an implementation and it facilitates the payment for content on the web. Thus, content providers can obtain an alternative revenue source to advertisement or subscription. Furthermore, developers, vendors and customers can see that the incorporation of payment protocols to the system is facilitated. Finally, the users obtain a uniform way to make payments that increases the perception of trust.

The unequal distribution of economic activities, transposed in economic, social and territorial disparities is the general characteristic of the European economy. Gaps increased in the context of European Union (EU) enlargement towards Eastern and Central Europe and of the economic crisis, thus bringing new differentiations among member states’ economies. The main aim of the chapter is to emphasise the centre-periphery differentiations in the European economy, by using a composite index of peripherality, in order to better understand the determinants of growth and convergence in Central and Eastern European countries and to reach normative conclusions for increasing Cohesion Policy (CP) effectiveness. The first part of the chapter provides a short overview of the main theories and models of the peripherality analysis and the relationships between the centre and the periphery, in order to find out how this analysis relates to the research in the field. The second part provides a comparative analysis of the evolution of European economies during 2003–2014, in order to find out whether the EU enlargement process stabilised the EU core-periphery pattern or, on the contrary, the process of core-periphery structural convergence occurred. The third part includes the suggested model of analysis (methodology, data, and main results) from a multidisciplinary perspective, underlining the centre-periphery differentiations on the two axes, North–South and West–East. The results have been interpreted in conclusions, with a focus on their relevance for the European CP challenges.

This paper aims to apply the non-linear impedance boundary condition (IBC) for a linear piecewise B–H curve in frequency domain simulations to find the equivalent impedance of a simple induction heating system model.

An electromagnetic description of the inductor system is performed to substitute the effects of the induction load, for a mathematical condition, the so-called IBC. This is suitable to be used in electromagnetic systems involving high conductive materials at medium frequencies, as it occurs in an induction heating system.

A reduction of the computational cost of electromagnetic simulation through the application of the IBC. The model based on linear piecewise B–H curve simplifies the electromagnetic description, and it can facilitate the identification of the induction load characteristics from experimental measurements.

This work is performed to assess the feasibility of using the non-linear boundary impedance condition of materials with linear piecewise B–H curve to simulate in the frequency domain with a reduced computational cost compared to time domain simulations.

In this paper, the use of the non-linear boundary impedance condition to describe materials with B–H curve by segments, which can approximate any dependence without hysteresis, has been studied. The results are compared with computationally more expensive time domain simulations.