Stability estimate for the aligned magnetic field in a periodic quantum waveguide from dirichlet-to-neumann map

In this article, we study the boundary inverse problem of determining the aligned magnetic fiaeld appearing in the magnetic Schr\"odinger equation in a periodic quantum cylindrical waveguide. Provided that the Dirichlet-to-Neumann map of the magnetic Schr\"odinger equation. We prove a Holder stability estimate with respect to the Dirichlet-to-Neumann map, by means of the geometrical optics solutions of the magnetic Schrodinger equation.Comment: 19 pages. arXiv admin note: text overlap with arXiv:1306.6601 by other author

Efficient Decoding Algorithms for the Compute-and-Forward Strategy

We address in this paper decoding aspects of the Compute-and-Forward (CF) physical-layer network coding strategy. It is known that the original decoder for the CF is asymptotically optimal. However, its performance gap to optimal decoders in practical settings are still not known. In this work, we develop and assess the performance of novel decoding algorithms for the CF operating in the multiple access channel. For the fading channel, we analyze the ML decoder and develop a novel diophantine approximation-based decoding algorithm showed numerically to outperform the original CF decoder. For the Gaussian channel, we investigate the maximum a posteriori (MAP) decoder. We derive a novel MAP decoding metric and develop practical decoding algorithms proved numerically to outperform the original one

AN INFORMATION SYSTEM DESIGN FRAMEWORK FOR ENVIRONMENTAL RISK AND EMERGENCY MANAGEMENT

Monitoring environmental risks for public safety applications (i.e. fire prediction, landslides forecasting, sea/river monitoring, etc.) requires an accurate model of involved phenomenological aspects, entities, actors, stakeholders as well as their articulated interactions. Due to the multidisciplinary nature of such scenarios several models are typically developed to address both concerns and information needs of heterogeneous skilled actors (e.g. geologists, geophysicists, chemists, managers, etc.), generally resulting in a fragmented process design. This paper goes in the opposite direction, i.e., we introduce a framework for designing collaborative processes for environmental risk and emergency management processes at multiple levels of detail. More specifically, through the use of UML models we provide a detailed description of ”the system of systems” articulated scenario which proves to be effective in designing risk evaluation and assessment processes. The application case is that of the rock face collapse forecasting in the alps, where the hydrogeological risk affects urban areas implemented into a multidisciplinary research project, namely PROMETEO, that focused on civil and public protection. As further work we aim to describe the framework as an extension to the Unified Modeling Language (UML)

Figement, défigement et traduction. Problématique théorique

Se trata de analizar los conceptos de fijación y de desautomatización bajo la perspectiva de la traducción. Después de haber entresacado los mecanismos que rigen cada proceso, mostraremos en qué medida la fijación determina la estrategía de la traducción.Il s'agit d'interroger les concepts de figement et de défigement sous l'angle de la traduction. Après avoir dégagé les mécanismes qui régissent chaque processus, nous montrerons en quoi la saisie de la fixité détermine la stratégie de traduction