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See detailModeling Exception Handling: a UML2.0 Platform Independent Profile for CAA
Capozucca, Alfredo UL; Gallina, Barbara UL; Guelfi, Nicolas UL et al

in Proceedings of ECOOP 2005 Workshop on Exception Handling in Object Oriented Systems (2005, July)

Complex fault-tolerant distributed systems have a growing need of new functional and quality requirements. An immediate consequence of this is an increasing need of new methods for developing complex ... [more ▼]

Complex fault-tolerant distributed systems have a growing need of new functional and quality requirements. An immediate consequence of this is an increasing need of new methods for developing complex fault-tolerant distributed applications. Coordinated Atomic Actions (CAAs), making use of exception handling mechanism, offer an approach to ensure the needed requirements of reliability, availability and fault tolerance. Unfortunately, there is currently no method for the high-level modeling of such systems. In this paper, in order to offer an instrument for modeling exception handling, we propose a UML2.0 Platform Independent Profile for CAAs that allows designers to describe complex systems separating the specification from the implementation on a specific technology platform. [less ▲]

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See detailA complete description of comparison meaningful functions
Marichal, Jean-Luc UL; Mesiar, Radko; Rückschlossová, Tatiana

in Proc. 3rd Int. Summer School on Aggregation Operators and their Applications (AGOP 2005), Lugano, Switzerland (2005, July)

Comparison meaningful functions acting on some real interval E are completely described as transformed coordinate projections on minimal invariant subsets. The case of monotone comparison meaningful ... [more ▼]

Comparison meaningful functions acting on some real interval E are completely described as transformed coordinate projections on minimal invariant subsets. The case of monotone comparison meaningful functions is further specified. Several already known results for comparison meaningful functions and invariant functions are obtained as consequences of our description. [less ▲]

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See detailLerntagebücher als Instrumente der Förderung und Evaluierung selbständigen Lernens
Bund, Andreas UL

in Gogoll, André; Menze-Sonneck, Andreas (Eds.) Qualität im Schulsport (2005, June)

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See detailNumerical Velocity determination and Calibration Methods for CHAMP Using the Energy Balance Approach
Weigelt, Matthias UL; Sneeuw, N.

in Jekeli, Christopher; Bastos, Luisa; Fernandes, Joana (Eds.) Gravity, Geoid and Space Missions (2005, June)

More than two years of data of the champ satellite mission is available and the usage of the energy balance approach for global gravity field recovery has been successfully implemented by several groups ... [more ▼]

More than two years of data of the champ satellite mission is available and the usage of the energy balance approach for global gravity field recovery has been successfully implemented by several groups around the world. This paper addresses two important aspects of the data processing. First, high-quality gravity recovery requires numerical differentiation of kinematic positions. Two methods are investigated using simulated and real dynamic data. It is shown that a third order Taylor differentiator is sufficient to reach good results. Second drift due to the accelerometer bias has to be corrected. Two possible approaches are discussed: cross-over calibration on the one hand calibration w.r.t. a reference model on the other hand. Currently the crossover calibration fails due to the insufficient accuracy of the crossover determination whereas the calibration w.r.t. a reference model gives good results. [less ▲]

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See detailPrüfung eines Modells zum selbstgesteuerten Bewegungslernen
Bund, Andreas UL; Ferwagner, Dirk

in Seelig, Harald; Göhner, Wiebke; Fuchs, Reinhard (Eds.) Selbststeuerung im Sport (2005, May)

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See detailZum Kontext-Interferenz-Effekt beim Fertigkeitserwerb beim Bodenturnen
Ata, Sobhi; Bund, Andreas UL; Wiemeyer, Josef

in Gabler, Hartmut; Göhner, Ulrich; Schiebl, Frank (Eds.) Zur Vernetzung von Forschung und Lehre in Biomechnik, Sportmotorik und Trainingswissenschaft (2005, February)

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See detailSelbstgesteuertes Bewegungslernen: Gegenwart und Perspektiven
Bund, Andreas UL

in Gabler, Hartmut; Göhner, Ulrich; Schiebl, Frank (Eds.) Zur Vernetzung von Forschung und Lehre in Biomechnik, Sportmotorik und Trainingswissenschaft (2005, February)

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See detailOntological perspective in metamodeling for model transformations
Göknil, Arda UL; Topaloglu, Y.

in Proceedings of the 2005 symposia on Metainformatics 2013-12-05 15:39:27 +0000 (2005)

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See detailCoping and Subjective Well-being in Old Age
Ferring, Dieter UL

in Abstracts of the 9th European Congress of Psychology, Granada (Spain), 3.-7. July 2005. (2005)

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See detailUn framework multi-agent pour algorithmes génétiques coévolutionnaires distribués
Danoy, Grégoire UL; Bouvry, Pascal UL; Boissier, Olivier

in Proceedings of the ROADEF (2005)

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See detailLibertas ecclesiae. Réformes monastiques et relecture de l'histoire dans l'espace lotharingien (Xe-XIIe siècles). Le cas de l'abbaye d'Echternach
Margue, Michel UL

in Ecrire son histoire. Les communautés régulières face à leur passé . Actes du 5e colloque international du CERCOR, Saint-Etienne, 6-8 novembre 2002 (2005)

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See detailLa ratification de la Convention de la Haye sur le trust par le Grand-Duché du Luxembourg
Prüm, André UL; Witz, Claude

in La ratification de la Convention de la Haye sur le trust par le Grand-Duché du Luxembourg (2005)

Le présent ouvrage reproduit les actes du colloque de Luxembourg du 11 décembre 2003 consacré au trust et à la nouvelle fiducie luxembourgeoise. D'éminents spécialistes du trust et de la Convention de La ... [more ▼]

Le présent ouvrage reproduit les actes du colloque de Luxembourg du 11 décembre 2003 consacré au trust et à la nouvelle fiducie luxembourgeoise. D'éminents spécialistes du trust et de la Convention de La Haye du 1er juillet 1985 éclairent utilement cette institution clé des pays de Common Law et les solutions de droit international posées par la Convention. La confrontation du trust avec les pays de droit civil est approfondie à la lumière de l'expérience du Grand-Duché qui a ratifié la Convention de La Haye tout en procédant à une réforme substantielle de la fiducie luxembourgeoise. Les auteurs de l'avant-projet de loi présentent en détail la loi du 27 juillet 2003 relative au trust et aux contrats fiduciaires dont l'étude est complétée par l'examen du traitement fiscal. L'ouvrage s'adresse à tous ceux qui s'intéressent au trust et à la fiducie notamment en France, en Belgique et en Suisse où l'on songe à ratifier la Convention de La Haye et à consacrer législativement la fiducie. [less ▲]

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See detailAuthentification Distribuée sur Grille de Grappes basée sur LDAP
Varrette, Sébastien UL; Georget, S.; Roch, J.-L. et al

in Proc. des 16èmes rencontres francophones du parallélisme (RenPar'16) (2005)

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See detailEvolutionary fuzzy system for architecture control in a constructive neural network
Calvo, R.; Figueiredo, M.; Antonelo, Eric Aislan UL

in 2005 International Symposium on Computational Intelligence in Robotics and Automation (2005)

This work describes an evolutionary system to control the growth of a constructive neural network for autonomous navigation. A classifier system generates Takagi-Sugeno fuzzy rules and controls the ... [more ▼]

This work describes an evolutionary system to control the growth of a constructive neural network for autonomous navigation. A classifier system generates Takagi-Sugeno fuzzy rules and controls the architecture of a constructive neural network. The performance of the mobile robot guides the evolutionary learning mechanism. Experiments show the efficiency of the classifier fuzzy system for analyzing if it is worth inserting a new neuron into the architecture. [less ▲]

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See detailAn XML Format Secure protocol-OpenSST
Zhang, Xinhua UL; Jiang, Chunyan; Meinel, Christoph

in The 3rd ACS/IEEE International Conference on Computer Systems and Applications (2005)

OpenSST (Open Simple Secure Transaction) is a free software project and aims to create an efficient, open and secure alternative to the secure proprietary transaction protocol. OpenSST uses XML syntax to ... [more ▼]

OpenSST (Open Simple Secure Transaction) is a free software project and aims to create an efficient, open and secure alternative to the secure proprietary transaction protocol. OpenSST uses XML syntax to specify its message format, and relies on prevalent cryptographic algorithms to secure the transaction. OpenSST is designed to provide user with the guarantee on confidentiality, integrity, authenticity and non-repudiation. One feature of OpenSST's is that it defines a simple message structure so that it can easily be integrated into different usage frameworks. This paper mainly describes OpenSST's logic architecture and message format through an http-based prototype. [less ▲]

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See detailTransition école - vie active : une typologie des mesures pour les jeunes sans qualification
Meyers, Raymond UL

in Actes de l'Université européenne d'été de la FREREF (2005)

Comme dans tous les pays européens, un grand nombre de mesures à destination des jeunes sortis du système scolaire sans qualification ont été mises en place au Luxembourg. Une étude systématique par ... [more ▼]

Comme dans tous les pays européens, un grand nombre de mesures à destination des jeunes sortis du système scolaire sans qualification ont été mises en place au Luxembourg. Une étude systématique par interview semi-dirigée a été réalisée auprès des responsables formation de l'ensemble des 32 dispositifs répertoriés au Luxembourg, en distinguant les mesures spécifiquement destinées aux jeunes et celles destinées pour tout âge, jeunes compris. L'enquête visait surtout à déterminer les caractéristiques des pratiques pédagogiques mises en oeuvre avec les publics concernés. A partir du dépouillement du matériel recueilli, une typologie en trois catégories a été élaborée. Celle-ci est construite sur 10 indicateurs importants : pré-requis, statut de l'apprenant, profil de l'apprenant, activités de remotivation, description de la formation (contenus et méthodes), suivi, stages, formateurs, qualification/certification, débouchés. Elle distingue les formations par le travail (formation "sur le tas" permettant d'apprendre des tâches professionnelles spécifiques ainsi que des compétences sociales de base), les formations d'insertion socio-professionnelle (formations se basant sur un programme de formation défini et donnent droit à une attestation en fonction d'une évaluation) et les formations qualifiantes (formations permettant d'obtenir un diplôme ou un certificat officiel du ministère et donnant droit à un barème salarial légal). Chacun de ces dispositifs a une logique de fonctionnement propre, une certaine cohérence en fonction du profil du groupe cible, des objectifs visés et de la démarche socio-pédagogique adoptée. Chacun de ces dispositifs correspond à des possibilités de travail avec une certaine partie du groupe cible. Situées à des distances spécifiques sur l'axe de transition entre la formation initiale et la vie active, ces types de mesures combinent de façon variable des caractéristiques spécifiques du champ scolaire et du champ professionnel. [less ▲]

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See detailKrise der Demokratie und Krise der juristischen Demokratielehre in Frankreich
Heuschling, Luc UL

in Bauer, Hartmut; Huber, Peter Michael; Sommermann, Karl-Peter (Eds.) Demokratie in Europa (2005)

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See detailSCTL: A StateChart Transformation Language for Test Sets Reduction
Guelfi, Nicolas UL; Ries, Benoît UL

in ERCIM Workshop on Dependable Software Intensive Embedded Systems, workshop of the 31st EUROMICRO Conference on Software Engineering and Advanced Appli (2005)

Specification and testing activities are key phases in embedded systems development life cycles. In specification-based testing approaches, test cases are solely generated from the system specification ... [more ▼]

Specification and testing activities are key phases in embedded systems development life cycles. In specification-based testing approaches, test cases are solely generated from the system specification. Test cases are often too numerous to be executed exhaustively. In practice, test engineers often select test cases based on informal approximations. We aim at improving these activities by formulating abstraction hypotheses on system specifications, to reduce generated test sets. Our general application framework is the automotive industry, and we aim the specific domain of small-sized real-time embedded systems that must be highly reliable. The main result presented in this paper is a model transformation language that helps test engineers to select test cases based on system specifications. [less ▲]

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See detailRecours aux psychotropes chez les seniors : " c'est une béquille pour faire face …"
Baumann, Michèle UL

in Scientific, Committee (Ed.) Diffraction normative, comportements cachés et identités transverses (2005)

Aujourd'hui l'analyse sociologique permet d'envisager la consommation de psychotropes par les seniors comme une caractéristique de nos sociétés modernes contemporaines. Le recours à ces médicaments est ... [more ▼]

Aujourd'hui l'analyse sociologique permet d'envisager la consommation de psychotropes par les seniors comme une caractéristique de nos sociétés modernes contemporaines. Le recours à ces médicaments est devenu l'une des clefs de la compréhension des comportements occidentaux où la recherche de bien-être physique, mental et social à tout prix est ressentie comme une nécessité avérée.Comment les consommateurs parviennent-ils à gérer leur consommation au point de la considérer comme non problématique ? Quelles attitudes pratiques et symboliques mettent-ils en œuvre pour y parvenir ? Est-il réellement possible de gérer son rapport à des produits intrinsèquement générateurs de dépendance ? Existe-t-il vraiment des personnes capables de contrôler leur consommation de psychotropes au point de la rendre compatible avec un mode de vie détaché de la dépendance à ce produit ? Existe-t-il une consommation invisible en raison même de son caractère non problématique pour les seniors ? Avec l'aide du psychotrope ne s'agit-il donc pas de rendre supportable et acceptable les effets du stigmate vécus par les seniors qui glissent peu à peu hors de la sphère productive ? La prescription de ces médicaments n'amène-t-elle pas à traduire des défaillances personnelles, des problèmes d'ordre social en besoin de solutions biomédicales ? Au-delà de cette médicalisation, ne doit-on pas également voir ces substances comme des moyens permettant de mieux répondre à la demande de performance définissant la normativité contemporaine ? Cette consommation ne révèle-t-elle pas une attitude de démission thérapeutique de la part des professionnels de la santé ? Les objectifs de ce travail ont été d’analyser les valeurs attribuées aux psychotropes, à la dépendance et le sens que les consommateurs et les consommatrices ayant une trajectoire continue ou occasionnelle donnent aux recours à ces médicaments. [less ▲]

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See detailThe Implementation of the ECGN Stations--Status of the 1st Call for Participation
Ihde, Johannes; Baker, Trevor; Bruyninx, Carine et al

in Torres, João Agria; Hornik, Helmut (Eds.) EUREF Publication No. 14 (2005)

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See detailÜberlegungen zum Thema „Bildungsstandards“ in fremd- und zweitsprachlichen Kontexten.
Hu, Adelheid UL

in Bausch, K.-R.; Burwitz-Meltzer, E.; Königs, F. (Eds.) et al Dokumentation der Frühjahrskonferenz zur Erforschung des Fremdsprachenlernens Februar 2005 (2005)

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See detailL’élargissement et les coopérations renforcées : de nouvelles complications dans l’action internationale des Communautés et de l’Union européennes ?
Neframi, Eleftheria UL

in Andriantsimbazovina, Joël (Ed.) Les Communautés et l’Union européennes face aux défis de l’élargissement (2005)

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See detail„Ich glaub’, sie wollen uns mehr integrieren...“ Ausgewählte Ergebnisse einer qualitativ-empirischen Studie zu schulischem Sprachenunterricht und migrationsbedingter Mehrsprachigkeit.
Hu, Adelheid UL

in Wolff, A.; Ostermann, T. (Eds.) Integration durch Sprache. Dokumentation der 31. Jahrestagung DaF 2003 (2005)

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See detailResults of the international comparison of absolute gravimeters in Walferdange (Luxembourg) of November 2003
Francis, Olivier UL; van Dam, Tonie UL; Amalvict, M. et al

in Jekeli, C.; Bastos, L.; Fernandes, J. (Eds.) Gravity, Geoid and Space Missions - GGSM 2004 (2005)

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See detailLa personnalité juridique de l’Union
Neframi, Eleftheria UL

in Maison, Rafaëlle (Ed.) Les mots de la Constitution européenne (2005)

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See detailWeb Hacking
Dagorn, Nathalie; Bernard, Nicolas UL

in Proceedings of the Fourth IADIS International Conference on the World Wide Web and the Internet (Internet/www 2005) (2005)

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See detailOn the complexity of representing sets of vertices in the n-cube
Couceiro, Miguel UL; Foldes, Stephan; Lehtonen, Erkko UL

in Tsitouras, C.; Simos, T. E.; Psihoyios, G. (Eds.) ICNAAM 2005 (2005)

Representations of an arbitrary set of vertices of an n-dimensional cube in terms of convex sets are compared with respect to their complexity. The notion of complexity used in the representations is ... [more ▼]

Representations of an arbitrary set of vertices of an n-dimensional cube in terms of convex sets are compared with respect to their complexity. The notion of complexity used in the representations is based on the union, symmetric difference and ternary median operations. Convexity of a set of vertices refers to Hamming distance or, equivalently, to the intersection of cubes with supporting hyperplanes. [less ▲]

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See detailIntelligent autonomous navigation for mobile robots: spatial concept acquisition and object discrimination
Antonelo, Eric Aislan UL; Figueiredo, Mauricio; Baerlvedt, Albert-Jan et al

in Proceedings of the 6th IEEE International Symposium on Computational Intelligence in Robotics and Automation (2005)

An autonomous system able to construct its own navigation strategy for mobile robots is proposed. The navigation strategy is molded from navigation experiences (succeeding as the robot navigates ... [more ▼]

An autonomous system able to construct its own navigation strategy for mobile robots is proposed. The navigation strategy is molded from navigation experiences (succeeding as the robot navigates) according to a classical reinforcement learning procedure. The autonomous system is based on modular hierarchical neural networks. Initially the navigation performance is poor (many collisions occur). Computer simulations show that after a period of learning the autonomous system generates efficient obstacle avoidance and target seeking behaviors. Experiments also offer support for concluding that the autonomous system develops a variety of object discrimination capability and of spatial concepts. [less ▲]

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See detailUtile coordination: Learning interdependencies among cooperative agents
Kok, Jelle R.; Hoen, Eter Jan; Bakker, Bram et al

in EEE Symp. on Computational Intelligence and Games, Colchester, Essex (2005)

We describe Utile Coordination, an algorithm that allows a multiagent system to learn where and how to coordinate. The method starts with uncoordinated learners and maintains statistics on expected ... [more ▼]

We describe Utile Coordination, an algorithm that allows a multiagent system to learn where and how to coordinate. The method starts with uncoordinated learners and maintains statistics on expected returns. Coordination dependencies are dynamically added if the statistics indicate a statistically significant benefit. This results in a compact state representation because only necessary coordination is modeled. We apply our method within the framework of coordination graphs in which value rules represent the coordination dependencies between the agents for a specific context. The algorithm is first applied on a small illustrative problem, and next on a large predator-prey problem in which two predators have to capture a single prey. [less ▲]

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See detailEine adaptive Produktentwicklungsmethodik als Beitrag zur Prozessgestaltung in der Produktentwicklung
Meißner, Moritz; Gericke, Kilian UL; Gries, Bruno et al

in Proceedings of 16th Symposium Design for X (2005)

In den letzen Jahrzehnten ist eine Vielzahl von Modellen zur methodischen Unterstützung des Produktentwicklungsprozesses (PEP) entstanden. Diese präskriptiven Modelle beinhalten oft den impliziten ... [more ▼]

In den letzen Jahrzehnten ist eine Vielzahl von Modellen zur methodischen Unterstützung des Produktentwicklungsprozesses (PEP) entstanden. Diese präskriptiven Modelle beinhalten oft den impliziten Anspruch, in jeder Branche und auf die Entwicklung jeder Art von Produkten anwendbar zu sein. Um dem gerecht zu werden, beschreiben die Modelle den PEP auf einem relativ abstrakten Niveau. Eine Anpassung an den Kontext der Produktentwicklung erfolgt in der Regel nicht. Existierende Ansätze ermöglichen eine Analyse des Kontexts aus verschiedenen Blickwinkeln, bieten jedoch keine konkreten Vorschläge, wie diese Analyse in den Prozess der Produktentwicklung einfließen kann. Welche Auswirkungen ausgewählte Kontextfaktoren auf tatsächliche PEP haben, geht aus einer schriftlichen Befragung von 1000 deutschen Unternehmen des produzierenden Gewerbes hervor. Es werden die Grundlagen einer Vorgehensweise beschrieben, welche basierend auf dem Kontext der Produktentwicklung die Gestaltung effektiver, effizienter, transparenter und methodisch unterstützter Produktentwicklungsprozesse ermöglichen soll. [less ▲]

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See detailSocial and temporal comparisons, health and life satisfaction old age
Ferring, Dieter UL

in Abstracts of the 9th European Congress of Psychology, Granada (Spain), 3.-7. July 2005. (2005)

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See detailVon der Fremdenherberge zum Seniorenheim: Funktionswandel in mittelalterlichen Hospitälern an ausgewählten Beispielen aus dem Maas-Mosel-Rhein-Raum
Pauly, Michel UL

in Matheus, Michael (Ed.) Funktions- und Strukturwandel spätmittelalterlicher Hospitäler im europäischen Vergleich (2005)

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See detailPlanning with Continuous Actions in Partially Observable Environments
Spaan, M. T. J.; Vlassis, Nikos UL

in Proc. IEEE Int. Conf. on Robotics and Automation (2005)

We present a simple randomized POMDP al gorithm for planning with continuous actions in partially observable environments. Our algorithm operates on a set of reachable belief points, sampled by letting ... [more ▼]

We present a simple randomized POMDP al gorithm for planning with continuous actions in partially observable environments. Our algorithm operates on a set of reachable belief points, sampled by letting the robot interact randomly with the environment. We perform value iteration steps, ensuring that in each step the value of all sampled belief points is improved. The idea here is that by sampling actions from a continuous action space we can quickly improve the value of all belief points in the set. We demonstrate the viability of our algorithm on two sets of experiments: one involving an active localization task and one concerning robot navigation in a perceptually aliased of fice environment. [less ▲]

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See detailComment apprendre à goûter la qualité ? Le cours du soir en œnologie : entre mots et perceptions
Reckinger, Rachel UL

in Blogowski, Alain; Lagrange, Louis; Valceschini, Egizio (Eds.) Actes du colloque international SFER (Société Français d’Economie Rurale) : Au nom de la qualité. Quelle(s) qualité(s) demain, pour quelle(s) demande(s) ? (2005)

It is becoming increasingly accepted that the wine we drink should be ‘quality wine’, but judging and communicating that quality to others are not so straightforward. Hence the success of adult evening ... [more ▼]

It is becoming increasingly accepted that the wine we drink should be ‘quality wine’, but judging and communicating that quality to others are not so straightforward. Hence the success of adult evening classes in wine tasting for beginners. In Luxembourg, they are organised by oenologists who use varying methodological approaches, which all share the development of consumer autonomy via cognition and especially sensorial training. The latter destabilises the learners who have to call upon differentiated learning tactics. [less ▲]

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See detailKann Erkenntnis kreativ sein? Die produktive Einbildungskraft in der Erkenntnistheorie und Ästhetik Kants
Heidemann, Dietmar UL

in Akten des XX. Deutschen Kongress für Philosophie (2005)

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See detailComment évaluer l’intérêt pour les branches scientifiques et techniques ?
Kerger, Sylvie UL

in Actes du 18èmes Colloque international de l'ADMEE (2005)

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See detailUnified European Gravity Reference Network 2002 (UEGN02)—Status 2004
Boedecker, G.; Francis, Olivier UL; Kenyeres, A.

in Jekeli, C.; Bastos, L.; Fernandes, J. (Eds.) Gravity, Geoid and Space Missions - GGSM 2004 (2005)

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See detailRobot planning in partially observable continuous domains
Porta, Josep M.; Spaan, Matthijs T. J.; Vlassis, Nikos UL

in Proc. Robotics: Science and Systems (2005)

We present a value iteration algorithm for learning to act in Partially Observable Markov Decision Processes (POMDPs) with continuous state spaces. Mainstream POMDP research focuses on the discrete case ... [more ▼]

We present a value iteration algorithm for learning to act in Partially Observable Markov Decision Processes (POMDPs) with continuous state spaces. Mainstream POMDP research focuses on the discrete case and this complicates its application to, e.g., robotic problems that are naturally modeled using continuous state spaces. The main difficulty in defining a (belief-based) POMDP in a continuous state space is that expected values over states must be defined using integrals that, in general, cannot be computed in closed from. In this paper, we first show that the optimal finite-horizon value function over the continuous infinite-dimensional POMDP belief space is piecewise linear and convex, and is defined by a finite set of supporting α-functions that are analogous to the α-vectors (hyperplanes) defining the value function of a discrete-state POMDP. Second, we show that, for a fairly general class of POMDP models in which all functions of interest are modeled by Gaussian mixtures, all belief updates and value iteration backups can be carried out analytically and exact. A crucial difference with respect to the α-vectors of the discrete case is that, in the continuous case, the α-functions will typically grow in complexity (e.g., in the number of components) in each value iteration. Finally, we demonstrate PERSEUS, our previously proposed randomized point-based value iteration algorithm, in a simple robot planning problem with a continuous domain, where encouraging results are observed. [less ▲]

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See detailNewscast EM
Kowalczyk, W.; Vlassis, Nikos UL

in Advances in Neural Information Processing Systems 17 (2005)

We propose a gossip-based distributed algorithm for Gaussian mixture learning, Newscast EM. The algorithm operates on network topologies where each node observes a local quantity and can communicate with ... [more ▼]

We propose a gossip-based distributed algorithm for Gaussian mixture learning, Newscast EM. The algorithm operates on network topologies where each node observes a local quantity and can communicate with other nodes in an arbitrary point-to-point fashion. The main difference between Newscast EM and the standard EM algorithm is that the M-step in our case is implemented in a decentralized manner: (random) pairs of nodes repeatedly exchange their local parameter estimates and combine them by (weighted) averaging. We provide theoretical evidence and demonstrate experimentally that, under this protocol, nodes converge exponentially fast to the correct estimates in each M-step of the EM algorithm. [less ▲]

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See detailPractical Authentication in Distributed Environments
Dagorn, Nathalie; Bernard, Nicolas UL; Varrette, Sébastien UL

in Proceedings of the First International Computer System and Information Technology Conference (ICSIT'05) (2005)

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See detailA Probabilistic Approach for Task and Result Certification of Large-scale Distributed Applications in Hostile Environments
A.Krings; Roch, J.-L.; Jafar, S. et al

in Proc. of the European Grid Conference (EGC2005) (2005)

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See detailOntology based Model Transformation Infrastructure
Göknil, Arda UL; Topaloglu, N. Y.

in Proceedings of the Joint Workshop on Web Services and Model-Driven Enterprise Information Services (WSMDEIS) 2013-12-05 15:41:26 +0000 (2005)

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See detailJustice constitutionnelle et justice ordinaire. Epistémologie d’une distinction théorique
Heuschling, Luc UL

in Grewe, Constance; Jouanjan, Olivier; Maulin, Eric (Eds.) et al La notion de justice constitutionnelle (2005)

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See detailLa nouvelle fiducie luxembourgeoise
Prüm, André UL; Witz, Claude

in La nouvelle fiducie luxembourgeoise (2005)

Le présent ouvrage reproduit les actes du colloque de Luxembourg du 11 décembre 2003 consacré au trust et à la nouvelle fiducie luxembourgeoise. D'éminents spécialistes du trust et de la Convention de La ... [more ▼]

Le présent ouvrage reproduit les actes du colloque de Luxembourg du 11 décembre 2003 consacré au trust et à la nouvelle fiducie luxembourgeoise. D'éminents spécialistes du trust et de la Convention de La Haye du 1er juillet 1985 éclairent utilement cette institution clé des pays de Common Law et les solutions de droit international posées par la Convention. La confrontation du trust avec les pays de droit civil est approfondie à la lumière de l'expérience du Grand-Duché qui a ratifié la Convention de La Haye tout en procédant à une réforme substantielle de la fiducie luxembourgeoise. Les auteurs de l'avant-projet de loi présentent en détail la loi du 27 juillet 2003 relative au trust et aux contrats fiduciaires dont l'étude est complétée par l'examen du traitement fiscal. L'ouvrage s'adresse à tous ceux qui s'intéressent au trust et à la fiducie notamment en France, en Belgique et en Suisse où l'on songe à ratifier la Convention de La Haye et à consacrer législativement la fiducie. [less ▲]

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See detailDeveloping empowerment of prisoners for supporting their employability : evaluating the implementation of EQUAL-RESET.
Baumann, Michèle UL; Tapsoba, H.; Haas, Claude UL

in Scientific, Committee (Ed.) Research and Innovations in Lifelong Learning. (2005)

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See detailAnnäherung und Differenz: Geschlechterdifferenzen im Bildungsverhalten, in den Wertorientierungen und dem Freizeitverhalten der Jugendlichen
Willems, Helmut UL; Weis, Christiane UL; Meyers, Christiane UL

in Milmeister, Marianne (Ed.) Aspects de la recherche jeunesse: Diversité et genre. Documents de la Journée CESIJE du 17 décembre 2004 (2005)

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See detailDévelopper l’employabilité et favoriser la mobilité professionnelle par l’étude et la prise en compte du contexte de travail
Pignault, Anne UL; Loarer, Even; Loss, Isabelle

in Collectif sous la coordination de François GUERIN (Ed.) Actes du 40ème Congrès de la SELF (2005)

Un nombre considérable d’études menées dans différents champs de la psychologie ou en ergonomie ont permis de mettre en évidence le caractère spécifique et contextualisé de l’activité ... [more ▼]

Un nombre considérable d’études menées dans différents champs de la psychologie ou en ergonomie ont permis de mettre en évidence le caractère spécifique et contextualisé de l’activité professionnelle et de la compétence. Toutefois, cette notion de contexte de travail, largement présente dans la littérature, demeure encore largement absente des pratiques de mobilité professionnelle. Le travail présenté s’appuie sur l’hypothèse générale selon laquelle l’analyse et la prise en compte des contextes de travail peut améliorer l’efficacité des démarches d’aide à la mobilité professionnelle. Cette recherche a commencé par la mise au point, à partir de l’analyse de différents types d’emplois, d’une première typologie d’éléments de contexte susceptibles de jouer un rôle dans la mobilité. Ensuite, ces éléments de contexte ont été intégrés dans une méthodologie « systématique » d’aide à la mobilité intégrant la prise en compte du contexte dans l’analyse de l’expérience. Une étude de validation a été menée auprès de 68 personnes salariées d’entreprises de travail temporaire, 39 personnes suivies par divers centres de bilan et d’orientation et 10 personnes salariées d’une grande entreprise industrielle ; un suivi de ces personnes est effectué. Les données fournies par cette étude confirment l’intérêt qu’il y a à prendre en compte l’expérience du contexte pour la construction de parcours professionnels. [less ▲]

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See detailHow companies learn from design flaws: results from an empirical study of the german manufacturing industry
Gries, Bruno; Gericke, Kilian UL; Blessing, Lucienne UL

in Proceedings of the 15th International Conference on Engineering Design (2005)

Design flaws often become apparent at a time when the product is already in use and its development process, which in many cases includes extensive testing of parts, components and prototypes, is ... [more ▼]

Design flaws often become apparent at a time when the product is already in use and its development process, which in many cases includes extensive testing of parts, components and prototypes, is considered complete. Such flaws may reach from poor ergonomics to the total failure of the product. Often, especially when user safety is at risk, design flaws are so severe that companies are forced to announce a product callback. Petroski suggests that many (if not most) products, which we are familiar with today, have a long history of previously flawed designs [3]. This implies that designers did indeed learn from design flaws in both senses of the word “learn”: discovering the flaw and utilizing the knowledge gained about it to find a solution. As far as discovering a design flaw is concerned, it can be assumed that the feedback from those who interact with the physical products in practice – the individuals who maintain, repair, recycle but essentially use the products – plays an important role. In their previous work, the authors pointed out hat this feedback information could not only be vital for identifying potential product hazards but helps designers to review the effects of their design measures and therefore to improve their products from generation to generation [4]. In order to obtain a better understanding of how designers learn from design flaws, a mail survey was conducted that aimed at investigating company-, process- and product-related factors of this phenomenon and to answer (among others) the following research questions: • To what extent are design flaws of a company’s (or a competitor’s) product a driving force in the development of new products? • How do the designers of a company become aware of design flaws of their products? • How successful are companies in correcting design flaws? • How do successful and unsuccessful companies differ in terms of size, activity profile of their designers and characteristics of their products? • What are possible factors that influence the success in correcting a design fault? [less ▲]

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See detailA Probabilistic Approach for Task and Result Certification of Large-scale Distributed Applications in Hostile Environments
Krings, Axel; Roch, Jean-Louis; Jafar, Samir et al

in Proc. of the European Grid Conference (EGC2005) (2005)

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See detailHigh-accuracy measurement of the spin-dependent neutron scattering length of the deuteron
van den Brandt, B.; Hautle, P.; Kohlbrecher, J. et al

in Proceedings of the 16th International Spin Physics Symposium and Workshop on Polarized Electron Sources and Polarimeters (2005)

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See detailReachability analysis of continuous time piecewise linear systems
Hamadeh, A. O.; Goncalves, Jorge UL

in Proceedings of the 44th IEEE Conference on Decision and Control and European Control Conference (2005)

This paper presents a new approach to the reachability problem for a class of hybrid systems called Piecewise Linear Systems (PLS). The principal tool used is the impact map between switching surfaces ... [more ▼]

This paper presents a new approach to the reachability problem for a class of hybrid systems called Piecewise Linear Systems (PLS). The principal tool used is the impact map between switching surfaces. The method consists of specifying a ellipsoidal set on the initial switching surface and finding upper- and lower-bound estimates of the possible reach sets using tools such as the S-procedure to set up linear matrix inequalities, of which numerical solutions are then computed. [less ▲]

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See detailForever young? Subjective age and life satisfaction in old age
Ferring, Dieter UL; Petit, C.

in Abstracts of the 9th European Congress of Psychology, Granada (Spain), 3.-7. July 2005. (2005)

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See detailMotivation and Exchange of emails between students
Gomez-Fernandez, Roberto UL

in 3rd International Conference on Multimedia and Information & Communication Technologies in Education (2005)

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See detailRoman des Amerikanismus. Bernhard Kellermanns "Der Tunnel"
Heimböckel, Dieter UL

in Erfahrung der Fremde (2005)

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See detailTrust et Fiducie au Luxembourg
Prüm, André UL

in Trust et Fiducie au Luxembourg (2005)

L’internationalisation des rapports juridiques conduit de plus en plus à une imbrication des systèmes juridiques et à la nécessité de reconnaître des institutions juridiques venus d’ailleurs. L’une de ces ... [more ▼]

L’internationalisation des rapports juridiques conduit de plus en plus à une imbrication des systèmes juridiques et à la nécessité de reconnaître des institutions juridiques venus d’ailleurs. L’une de ces institutions, le trust, né dans le système de la common law, s’exporte de plus en plus dans les pays de tradition civiliste. Pour faciliter son acclimatation, la Convention de la Haye relative à la loi applicable au trust et à sa reconnaissance a été adoptée le 1er juillet 1985. Cette Convention entend à la fois permettre la reconnaissance de cette institution par des ordres juridiques qui ne la connaissent pas et fixer à l'égard des pays signataires la loi applicable au trust. A l’aube de sa ratification par la Suisse, des experts venus de différents pays se sont réunis à l’Institut suisse de droit comparé (Lausanne) le 18 mars 2005 pour partager les expériences nationales. Le présent ouvrage publie les rapports exposés à cette occasion. [less ▲]

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See detailDafo, a multi-agent framework for decomposable functions optimization
Danoy, Grégoire UL; Bouvry, Pascal UL; Boissier, Olivier

in 9th International Conference on Knowledge-Based Intelligent Information and Engineering Systems (KES 2005) (2005)

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See detailBubble Caster – a mixed reality children application for interactive shadow play
Winkler, Thomas; Arend, Sonja; Hadley, Lia et al

in Proceedings of IDC 2005, Boulder, Colorado, USA (2005)

In this paper, we describe how the mixed reality application, Bubble Caster, technically works and how we involved children ages 7 to 8 in the design process. The children used their storytelling and ... [more ▼]

In this paper, we describe how the mixed reality application, Bubble Caster, technically works and how we involved children ages 7 to 8 in the design process. The children used their storytelling and programming skills to produce the interactive, mixed reality shadow play, The Magic Cauldron. The project enabled the children to acquire elementary programming skills in a playful learning environment. [less ▲]

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See detailk-intolerant capacities and Choquet integrals
Marichal, Jean-Luc UL

in Barthélemy, Jean-Pierre; Lenca, Philippe (Eds.) Advances in Multicriteria Decision Aid - Progrès en Aide Multicritère à la Décision (ENST Bretagne, 2005) (2005)

We define an aggregation function to be (at most) k-intolerant if it is bounded from above by its kth lowest input value. Applying this definition to the discrete Choquet integral and its underlying ... [more ▼]

We define an aggregation function to be (at most) k-intolerant if it is bounded from above by its kth lowest input value. Applying this definition to the discrete Choquet integral and its underlying capacity, we introduce the concept of k-intolerant capacities which, when varying k from 1 to n, cover all the possible capacities on n objects. Just as the concepts of k-additive capacities and p-symmetric capacities have been previously introduced essentially to overcome the problem of computational complexity of capacities, k-intolerant capacities are proposed here for the same purpose but also for dealing with intolerant or tolerant behaviors of aggregation. We also introduce axiomatically indices to appraise the extent to which a given capacity is k-intolerant and we apply them on a particular recruiting problem. [less ▲]

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See detailAgrégation sur des échelles ordinales finies par des fonctions indépendantes des échelles
Marichal, Jean-Luc UL; Mesiar, Radko

in Actes des "Rencontres francophones sur la logique floue et ses applications" (LFA 2004), Nantes, France, Nov. 18-19, 2004 (2004, November)

We give an interpretation of order invariant functions as scale independent functions for the aggregation on finite ordinal scales. More precisely, we show how order invariant functions can act, through ... [more ▼]

We give an interpretation of order invariant functions as scale independent functions for the aggregation on finite ordinal scales. More precisely, we show how order invariant functions can act, through discrete representatives, on ordinal scales represented by finite chains. In particular, this interpretation allows us to justify the continuity property for certain order invariant functions in a natural way. [less ▲]

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See detailFemale entrepreneurs and financing
Constantinidis, Christina UL; Cornet, Annie

in RENT XVIII Proceedings (2004, November)

Our paper presents some results from a research on women's entrepreneurship in Belgium, which is part of a wider project called “Diane”, which took place within the framework of an equal opportunity ... [more ▼]

Our paper presents some results from a research on women's entrepreneurship in Belgium, which is part of a wider project called “Diane”, which took place within the framework of an equal opportunity action. We choose to expose one of the most interesting aspects of this research on women’s entrepreneurship : financing. The main question of our research was to enquire whether there are any specificities in the women’s entrepreneurship in Belgium as regards the financing of their firms. First, we investigated the amounts that female entrepreneurs invested for the start-up and development of their firms. Second, we aimed to determine which financing sources were used by female entrepreneurs. Finally, we enquired whether they had access to external financing, and more specifically to bank loans. Our results show that female entrepreneurs have mainly recourse to their personal savings or to family and friends’ loans to finance the company start-up and development. But they use also bank loans in a great extent for their firm launching. Nevertheless, it seems that they apply for bank loans only if they have no other choice, due to their strong risk-aversion and their lack of trust toward bankers. These reasons also lead them to invest lower amounts in the start-up and development of their companies. Female entrepreneurs face a lot of barriers to bank financing. There are several specific financing problems for female entrepreneurs, related to some of their firm’s characteristics, especially the field of activity and the size. Some gender characteristics can also be barriers to financing. On the basis of our results, we draw some recommendations for public authorities. [less ▲]

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See detailA complete description of comparison meaningful functions
Marichal, Jean-Luc UL; Mesiar, Radko; Rückschlossová, Tatiana

in Bouyssou, Denis; Janowitz, Mel; Roberts, Fred (Eds.) et al Annales du LAMSADE No 3 - Octobre 2004 (2004, October)

Comparison meaningful functions acting on some real interval E are completely described as transformed coordinate projections on minimal invariant subsets. The case of monotone comparison meaningful ... [more ▼]

Comparison meaningful functions acting on some real interval E are completely described as transformed coordinate projections on minimal invariant subsets. The case of monotone comparison meaningful functions is further specified. Several already known results for comparison meaningful functions and invariant functions are obtained as consequences of our description. [less ▲]

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See detailSelbstgesteuertes Lernen im Sport: Eine Synopsis der sportpädagogischen und bewegungswissenschaftlichen Problemanalyse.
Bund, Andreas UL

in Schierz, Matthias; Frei, Peter (Eds.) Sportpädagogisches Wissen. Spezifik - Transfer - Transformationen (2004, September)

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See detailk-intolerant bi-capacities and veto criteria
Grabisch, Michel; Labreuche, Christophe; Marichal, Jean-Luc UL et al

in López-Díaz, Miguel Concepcion; Gil, Maria Angeles; Grzegorzewski, Przemyslaw (Eds.) et al Soft Methodology and Random Information Systems (2004, July 30)

We present the notion of k-intolerant bi-capacity, extending to the case of bipolar scales the notion of k-intolerant capacity recently proposed by Marichal. In a second part, we extend to the bipolar ... [more ▼]

We present the notion of k-intolerant bi-capacity, extending to the case of bipolar scales the notion of k-intolerant capacity recently proposed by Marichal. In a second part, we extend to the bipolar case the notion of veto criteria. [less ▲]

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See detailAxiomatic characterizations of probabilistic and cardinal-probabilistic interaction indices
Fujimoto, Katsushige; Kojadinovic, Ivan; Marichal, Jean-Luc UL

in Proc. 10th Int. Conf. on Information Processing and Management of Uncertainty in Knowledge-Based Systems (IPMU 2004), Perugia, Italy, July 4-9, 2004 (2004, July)

In the framework of cooperative game theory and multicriteria decision making, the concept of interaction index, which can be regarded as an extension of that of value, has been recently proposed to ... [more ▼]

In the framework of cooperative game theory and multicriteria decision making, the concept of interaction index, which can be regarded as an extension of that of value, has been recently proposed to measure the interaction phenomena among players or criteria. Axiomatizations of two classes of interaction indices, namely probabilistic interaction indices and cardinal-probabilistic interaction indices, generalizing probabilistic values and semivalues, respectively, are first proposed. Three existing instances of cardinal-probabilistic interaction indices encountered thus far in the literature are also axiomatized. [less ▲]

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See detailk-intolerant capacities and Choquet integrals
Marichal, Jean-Luc UL

in Proc. 10th Int. Conf. on Information Processing and Management of Uncertainty in Knowledge-Based Systems (IPMU 2004), Perugia, Italy, July 4-9, 2004 (2004, July)

We define an aggregation function to be (at most) k-intolerant if it is bounded from above by its kth lowest input value. Applying this definition to the discrete Choquet integral and its underlying ... [more ▼]

We define an aggregation function to be (at most) k-intolerant if it is bounded from above by its kth lowest input value. Applying this definition to the discrete Choquet integral and its underlying capacity, we introduce the concept of k-intolerant capacities which, when varying k from 1 to n, cover all the possible capacities on n objects. Just as the concepts of k-additive capacities and p-symmetric capacities have been previously introduced essentially to overcome the problem of computational complexity of capacities, k-intolerant capacities are proposed here for the same purpose but also for dealing with intolerant or tolerant behaviors of aggregation. We also introduce axiomatically indices to appraise the extent to which a given capacity is k-intolerant. [less ▲]

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See detailAggregation on finite ordinal scales by scale independent functions
Marichal, Jean-Luc UL; Mesiar, Radko

in Proc. 10th Int. Conf. on Information Processing and Management of Uncertainty in Knowledge-Based Systems (IPMU 2004), Perugia, Italy, July 4-9, 2004 (2004, July)

We give an interpretation of order invariant functions as scale independent functions for the aggregation on finite ordinal scales. More precisely, we show how order invariant functions can act, through ... [more ▼]

We give an interpretation of order invariant functions as scale independent functions for the aggregation on finite ordinal scales. More precisely, we show how order invariant functions can act, through discrete representatives, on ordinal scales represented by finite chains. In particular, this interpretation allows us to justify the continuity property for certain order invariant functions in a natural way. [less ▲]

Detailed reference viewed: 72 (0 UL)
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See detailSelf-controlled learning of the forehand topspin stroke in table tennis
Bund, Andreas UL

in Kahn, Jean-Francois; Lees, Adrian; Maynard, Ian (Eds.) Science and Racket Sports III (2004, February)

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See detailk-intolerant capacities and Choquet integrals
Marichal, Jean-Luc UL

in Klement, Erich Peter; Pap, Endre (Eds.) Proc. 25th Linz Seminar on Fuzzy Set Theory (LINZ 2004): Mathematics of Fuzzy Systems (2004, February)

We define an aggregation function to be (at most) k-intolerant if it is bounded from above by its kth lowest input value. Applying this definition to the discrete Choquet integral and its underlying ... [more ▼]

We define an aggregation function to be (at most) k-intolerant if it is bounded from above by its kth lowest input value. Applying this definition to the discrete Choquet integral and its underlying capacity, we introduce the concept of k-intolerant capacities which, when varying k from 1 to n, cover all the possible capacities on n objects. Just as the concepts of k-additive capacities and p-symmetric capacities have been previously introduced essentially to overcome the problem of computational complexity of capacities, k-intolerant capacities are proposed here for the same purpose but also for dealing with intolerant or tolerant behaviors of aggregation. [less ▲]

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See detailOn a natural fuzzification of Boolean logic
Bisdorff, Raymond UL

in Klement, Erich Peter, Pap, Endre (Ed.) Proceedings of the 25th Linz Seminar on Fuzzy Set Theory, Mathematics of Fuzzy Systems (2004, February)

In this communication we propose two logically sound fuzzification and defuzzifi- cation techniques for implementing a credibility calculus on a set of propositional expressions. Both rely on a ... [more ▼]

In this communication we propose two logically sound fuzzification and defuzzifi- cation techniques for implementing a credibility calculus on a set of propositional expressions. Both rely on a credibility evaluation domain using the rational in- terval [−1, 1] where the sign carries a split truth/falseness denotation. The first technique implements the classic min and max operators where as the second technique implements Bochvar-like operators. Main interest in the communica- tion is given to the concept of natural fuzzification of a propositional calculus. A formal definition is proposed and the demonstration that both fuzzification techniques indeed verify this definition is provided. [less ▲]

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See detailInfluence of doping density on small and large signal characteristics of AlGaN/GaN/SiC HEMTs
Fox, A.; Marso, Michel UL; Bernát, J. et al

in Proc. 5th Intern. Conf. Advanced Semicon. Dev. & Microsystems ASDAM’04 (2004)

The small signal S-parameter and load pull measurements on AlGaN/GaN HEMTs with different doping densities are reported. The cut-off frequencies ft and fmax of 38 and 67 GHz respectively, and the maximal ... [more ▼]

The small signal S-parameter and load pull measurements on AlGaN/GaN HEMTs with different doping densities are reported. The cut-off frequencies ft and fmax of 38 and 67 GHz respectively, and the maximal output powers of 4.9 and 3.8 W/mm at 2 and 7 GHz respectively, were achieved. The parameter extraction from small signal S-parameters shows an increase of gate-source capacitance and transconductance with the doping concentration and hence its influence on small signal (ft and fmax) and power performance. [less ▲]

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See detailA Specification for Underground Tank Monitoring System (UTMS) Using Real-Time Process Algebra (RTPA)
Nguyen, Thanh-Phuong UL; Nguyen, Ngoc Binh

in The procedding of the IEEE RIVF 2004 conference (2004)

Detailed reference viewed: 47 (1 UL)
See detailMehrsprachigkeit als Voraussetzung und Ziel von Sprachenunterricht in der Schule.
Hu, Adelheid UL

in Bausch, K.-R.; Königs, F.G.; Krumm, H.-J. (Eds.) Mehrsprachigkeit. Dokumentation der Frühjahrskonferenz zur Erforschung des Fremdsprachenlernens Februar 2004 (2004)

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See detailSecure Architecture for Clusters and Grids
Varrette, Sébastien UL; Roch, J.-L.; Denneulin, Y. et al

in Proc. of the 2nd Int. Conf. on Critical Infrastructures (CRIS 2004) (2004)

Detailed reference viewed: 51 (2 UL)
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See detailAnytime Algorithms for Multiagent Decision Making Using Coordination Graphs
Vlassis, Nikos UL; Elhorst, R.; Kok, J. R.

in Proceedings of the International Conference on Systems, Man and Cybernetics (2004)

Coordinationgraphsprovideatractableframe- work for cooperative multiagent decision making by decom- posing the global payoff function into a sum of local terms. In this paper we review some distributed ... [more ▼]

Coordinationgraphsprovideatractableframe- work for cooperative multiagent decision making by decom- posing the global payoff function into a sum of local terms. In this paper we review some distributed algorithms for ac- tion selection in a coordination graph and discuss their pros and cons. For real-time decision making we emphasize the need for anytime algorithms for action selection: these are algorithms that improve the quality of the solution over time. We describe variable elimination, coordinate ascent, and the max-plus algorithm, the latter being an instance of the be- lief propagation algorithm in Bayesian networks. We discuss some interesting open problems related to the use of the max- plus algorithm in real-time multiagent decision making. [less ▲]

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See detailAnalyzing Design Process and Experiments on the AnITA Generic Tutoring System
Brust, Matthias R. UL; Rothkugel, Steffen UL

in Proceedings of International Conference on Education and Information Systems, Orlando (EISTA 04) (2004)

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See detailEngineering of Dependable Complex Business Processes using UML and Coordinated Atomic Actions
Guelfi, Nicolas UL; Le Cousin, Guillaume UL; Ries, Benoît UL

in International Workshop on Modeling Inter-Organizational Systems (MIOS'04) (2004)

For many companies, it is widely recognized that languages and methods for modeling and analyzing distributed business processes are becoming more and more important. For improving efficiency, the ... [more ▼]

For many companies, it is widely recognized that languages and methods for modeling and analyzing distributed business processes are becoming more and more important. For improving efficiency, the modeling language should provide reusability, easy understanding by business analysts, and should ease the validation and verification tasks. In this paper, we present an approach for developing dependable complex business processes using UML that satisfies these requirements. The proposed UML notation is designed to be directly integrated with COALA, a syntactically and semantically well-defined fault-tolerant advanced transaction model based on Coordinated Atomic Actions. Structuring concepts like nested business processes and fault-tolerance through exception handling are first class concepts brought by our approach that are crucial for modeling cross-enterprise business processes. The modeling phase is followed by a validation phase by business analysts through animation of the business process model in a workflow environment. Due to the precise notation used, automatic verification of crucial properties is accessible through integration with an automatic verifier. [less ▲]

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See detailADS as Information Management Service in an M-Learning Environment
Brust, Matthias R. UL; Görgen, Daniel; Hutter, Christian UL et al

in Proceedings of 8th International Conference on Knowledge-Based Intelligent Information & Engineering Systems (KES2004) (2004)

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See detailNon-linear CCA and PCA by Alignment of Local Models
Verbeek, J. J.; Roweis, S. T.; Vlassis, Nikos UL

in Advances in Neural Information Processing Systems 16 (2004)

We propose a non-linear Canonical Correlation Analysis (CCA) method which works by coordinating or aligning mixtures of linear models. In the same way that CCA extends the idea of PCA, our work extends ... [more ▼]

We propose a non-linear Canonical Correlation Analysis (CCA) method which works by coordinating or aligning mixtures of linear models. In the same way that CCA extends the idea of PCA, our work extends recent methods for non-linear dimensionality reduction to the case where multiple embeddings of the same underlying low dimensional coordinates are observed, each lying on a different high dimensional manifold. [less ▲]

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See detailDie Rolle der Landwirtschaft in der Eigenständigen Regionalentwicklung der Region "West" Irlands"
Sprenger, Birte UL

in Bröckling, Frank; Grabski-Kieron, Ulrike; Krajewski, Christian (Eds.) Stand und Perspektiven der deutschsprachigen Geographie des ländlichen Raumes (2004)

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See detailMSM varactor diodes based on AlGaN/GaN/SiC HEMT layer structures
Marso, Michel UL; Bernát, J.; Javorka, P. et al

in Proc. 5th Intern. Conf. Advanced Semicon. Dev. & Microsystems ASDAM’04 (2004)

The influence of a carrier supply layer on the electrical properties of MSM diodes based on AlGaN/GaN HEMT layer structures is investigated. The voltage dependence of the Schottky contact capacitance ... [more ▼]

The influence of a carrier supply layer on the electrical properties of MSM diodes based on AlGaN/GaN HEMT layer structures is investigated. The voltage dependence of the Schottky contact capacitance allows the use of the device as varactor diode with CMAX / CMIN ratios up to 17, tuneable by contact geometry. The carrier supply doping determines the sheet carrier density of the twodimensional electron gas channel, which is responsible for the transition voltage and the series resistance of the MSM diode. A device based on the highest doped layer structure shows a cutoff frequency as high as 65 GHz. [less ▲]

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See detailA Study of Mobile Internet Technologies for Secure e-commerce Applications Development
Guelfi, Nicolas UL; Pruski, Cédric UL; Ries, Benoît UL

in Techniques and Applications for Mobile Commerce (TAMOCO) part of Multi-Konferenz Wirtschaftsinformatik 2004 (2004)

With mobile e-commerce, mobile user can buy or trade for things or services when on the move, anywhere and at anytime. Mobile e-commerce will contribute to raise the user’s standard of living. However, to ... [more ▼]

With mobile e-commerce, mobile user can buy or trade for things or services when on the move, anywhere and at anytime. Mobile e-commerce will contribute to raise the user’s standard of living. However, to reach this objective, security measures have to be strong in order to conquer the users’ trust. The objective of this paper is to present how we could adapt an architectural framework to support the development of secure m-commerce applications. This is done based on our case study, called Luxdeal and our study of the current mobile Internet technologies. [less ▲]

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See detailGeneration of 1 THz radiation by photomixing in low-temperature-grown MBE GaAs
Mikulics, M.; Camara, I.; Marso, Michel UL et al

in Proc. 5th Intern. Conf. Advanced Semicon. Dev. & Microsystems ASDAM’04 (2004)

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See detailGaN Nanocolumns on Si(111) Grown b Molecular Beam Epitaxy
Calarco, Raffaella; Marso, Michel UL; Meijers, R. et al

in Proc. 5th Intern. Conf. Advanced Semicon. Dev. & Microsystems ASDAM’04 (2004)

GaN nanocolumns are reproducibly grown by plasma-assisted molecular beam epitaxy on Si(111). The nanocolumn density and diameter, 20–150 nm, are controlled by means of the III/V ratio. The nanocolumns ... [more ▼]

GaN nanocolumns are reproducibly grown by plasma-assisted molecular beam epitaxy on Si(111). The nanocolumn density and diameter, 20–150 nm, are controlled by means of the III/V ratio. The nanocolumns grow parallel to the [111] direction of the Si substrate. The columns have been transferred to a Si(100) substrate covered with a layer of 300nm SiO2; single nanowire devices have been fabricated using finger shaped electrical contacts (Ti/Au) obtained by e-beam patterning technique. The electrical transport properties of the resulting metal–semiconductor–metal nanostructures are analyzed by means of current– voltage measurements with and without UV-illumination. [less ▲]

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See detailInteractions des rôles médecins et pharmaciens dans la mise en place et le suivi des traitements
Baumann, Michèle UL; Manache, L.

in XVII° Congrès International AISLF (2004)

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See detailCooperative and Mobile Learning in Ad-Hoc Networks
Brust, Matthias R. UL; Rothkugel, Steffen UL

in Proceedings of World Conference on Engineering and Technology Education (WCETE 2004) (2004)

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See detailLa distribution spatio-temporelle des hôpitaux entre Rhin et Meuse au Moyen ge
Pauly, Michel UL

in Montaubin, Pascal (Ed.) Hôpitaux et maladreries au Moyen Âge : espace et environnement. Actes du colloque international d’Amiens-Beauvais, 22, 23 et 24 novembre 2002 (2004)

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See detailThe interactive and multi-protagonist film: A hypermovie on DVD
Melzer, André UL; Hasse, Sebastian; Jeskulke, Oliver et al

in Rauterberg, M. (Ed.) ICEC2004, LNCS 3166, Eindhoven 1-3 September 2004 (2004)

The interactive and multi-protagonist (IMP) film is a novel concept that extends the hypermovie genre. The IMP film is based on the common structures of linear narrative storytelling and provides the ... [more ▼]

The interactive and multi-protagonist (IMP) film is a novel concept that extends the hypermovie genre. The IMP film is based on the common structures of linear narrative storytelling and provides the viewer with various decision points within the evolving story that support an active choice among different protagonists’ views. The viewer will thus be elevated to the role of a decision maker. They individually and actively determine the story flow. The IMP film substantially extends the currently offered interactivity of DVDs which is primarily limited to navigation. The production process of an IMP film will be illustrated by presenting Deine Wahrheit (Your Truth), a DVD-based movie. The results of an empirical study support the advantages of the IMP film compared to a traditional single-protagonist version of the film. The potential of the IMP film as a new genre in hypermovie will be discussed. [less ▲]

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See detailNitrogen implanted GaAs for ultrafast photodetectors and photomixers
Mikulics, M.; Wolter, M. J.; Marso, Michel UL et al

in Proc. 5th Intern. Conf. Advanced Semicon. Dev. & Microsystems ASDAM’04 (2004)

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See detailSources of social Support in six European countries
Paulsson, C.; Burholt, Vanessa; Wenger, Clare et al

in Conference Abstract Book (2004)

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See detailDer interaktive Perspektivenfilm als Hyperfilm auf Video-DVD
Jeskulke, Oliver; Hasse, Sebastian; Melzer, André UL et al

in In R. Keil–Slawik, H. Selke, & G. Szwillus (Hrsg.), Mensch und Computer 2004: Allgegenwärtige Interaktion (S. 169-178) (2004)

Der interaktive Perspektivenfilm (IPF), eine besondere Form des Hyperfilms, unterstützt unter Beibehaltung der bewährten linearen Erzählweise des Mediums Film zu verschiedenen Zeitpunkten des Verlaufs ... [more ▼]

Der interaktive Perspektivenfilm (IPF), eine besondere Form des Hyperfilms, unterstützt unter Beibehaltung der bewährten linearen Erzählweise des Mediums Film zu verschiedenen Zeitpunkten des Verlaufs einer Geschichte die aktive Auswahl aus konkurrierenden Erzählperspektiven. Der Zuschauer wird auf diese Weise zum Entscheidungsträger und Gestalter des Informationsflusses. Die bisher weitestgehend auf Navigation reduzierte Interaktivität des Mediums Video-DVD wird somit wesentlich erweitert. Anhand des Filmprojekts „Deine Wahrheit“ wird der Produktionsprozess eines IPF von der Konzeption der Charaktere über das Verfassen des Drehbuchs und der digitalen-technischen Produktion und Nachbearbeitung des Filmmaterials sowie dem abschließenden DVD-Authoring vorgestellt. Belege für den Mehrwert des IPF resultieren aus dem empirischen Vergleich mit einer herkömmlichen, perspektivisch-linearen Version des Films. Das Potenzial dieses neuen Genres wird diskutiert. [less ▲]

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See detailConcept and Status of the ECGN Project
Ihde, J.; Baker, T. F.; Bruyninx, C. et al

in Torres, João Agria; Hornik, Helmut (Eds.) EUREF Publication No. 13 (2004)

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See detailFinding surface Lyapunov functions through sum-of-squares Programming
Spanos, D.; Goncalves, Jorge UL

in Proceedings of the American Control Conference 2004 (2004)

This work presents a sum-of-squares method to construct polynomial surface Lyapunov functions (SuLF) of arbitrary order for the impact maps of limit cycles in piecewise linear systems (PLS). This work ... [more ▼]

This work presents a sum-of-squares method to construct polynomial surface Lyapunov functions (SuLF) of arbitrary order for the impact maps of limit cycles in piecewise linear systems (PLS). This work extends previous results on stability analysis of such limit cycles, which utilized quadratic SuLFs. This paper also discusses an initial study of hierarchical jump linear systems where the switching is driven by feedback of low-level dynamical system states and a Markovian process. [less ▲]

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See detailDie Verbreitung von Leprosorien und Kriterien zu ihrer Klassifizierung unter räumlichen Aspekten - Das Beispiel der Rheinlande
Uhrmacher, Martin UL

in Montaubin, Pascal (Ed.) Hôpitaux et Maladreries au Moyen Âge: Espace et Environnement. Actes du colloque international d'Amiens-Beauvais 22, 23 et 24 novembre 2002 (2004)

Der Beitrag stellt die Geschichte der Leprosorien in den Rheinlanden vom 12. bis zum 18. Jahrhundert vor. Im ersten Teil der Untersuchung wird die Entstehung von Leprosorien, ihre zunehmende räumliche ... [more ▼]

Der Beitrag stellt die Geschichte der Leprosorien in den Rheinlanden vom 12. bis zum 18. Jahrhundert vor. Im ersten Teil der Untersuchung wird die Entstehung von Leprosorien, ihre zunehmende räumliche Verbreitung und schließlich das Ende der Einrichtungen untersucht. Insgesamt konnten im Untersuchungsraum 181 Lepro¬sorien nachgewiesen werden. Die ältesten Belege stammen aus dem späten 12. und dem frühen 13. Jahrhundert: Köln (1180), Malmedy (1188) und Aachen (1230). Zur zeitlichen Differenzierung wurden drei Zeitstufen definiert: In der ersten Zeitstufe bis 1350 lassen sich 18 Leprosorien nachweisen, zwischen 1351 und 1550 sind 60 Einrichtungen erstmals erwähnt und nach 1551 konnten weitere 69 Leprosorien dokumentiert werden. Hinzu kommen noch 34 nicht datierte Einrichtungen. Die kartographische Umsetzung (siehe Karte 1) zeigt eine starke Verbreitung von Leprosorien in den klimatisch und verkehrsgeographisch begünstigten Regionen nördlich der Mittelgebirge und entlang der Flußtäler, in den Höhenlagen finden sich dagegen fast keine Leprosenhäuser. Im zweiten Teil des Aufsatzes werden typische Kriterien definiert, die die wichtigsten Merkmale eines voll ausgebildeten rheinischen Leprosoriums umfassen; an diesem Vergleichsmaßstab können dann die in Größe und Ausstattung stark variierenden Leprosorien gemessen werden. Hierzu zählen zunächst die charakteristischen Standortfaktoren: Die Lage außerhalb der Siedlungen und an wichtigen Straßen, die Nähe zu einem Wasserlauf, die Umfriedung des Leprosoriums, die Existenz einer Kapelle und eines Friedhofs, getrennte Wohnstätten für die Leprosen und ihre Bediensteten und die Nähe zu einer Hochgerichtsstätte. Darüber hinaus lassen sich weitere Kriterien bestimmen, die hinsichtlich der Organisationsformen Aufschluß über die Größe und Bedeutung eines Leprosoriums geben: Die Durchführung der Lepraschau, die Existenz schriftlich fixierter Statuten, die Funktion als Sitz einer überregionalen Leprosenbruderschaft, das Vorhandensein von Provisoren und speziellen Bediensteten und schließlich die Besitz eines Siegels. Die Untersuchung aller rheinischen Leprosorien zeigt, daß Umfang und Ausstattung eines Leprosoriums direkt von der Größe und Bedeutung der zugehörigen Stadt abhängig waren. Das beste Beispiel hierfür ist das Leprosorium Melaten bei Köln, der mit Abstand größten Stadt des Untersuchungsraumes. Die herausgehobene Bedeutung von Köln-Melaten gegenüber allen anderen rheinischen Leprosorien zeigt sich besonders an dem großen Einzugsbereich der hier praktizierten Lepraschau (vgl. Karte 2). Die Folgen des Rückgangs der Lepraerkrankungen lassen sich im Untersuchungsraum ab dem Ende des 16. Jahrhunderts deutlich nachweisen. Es kam zunächst zur Unterbelegung und später zum Verfall, zur Auflösung oder zur Zweckentfremdung der Leprosorien. Die Einkünfte, Renten und Stiftungen der Einrichtungen fielen dann meist anderen sozialen Einrichtungen zu. [less ▲]

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See detailDC and Pulsed Behaviour of Undoped and Doped AlGaN/GaN/SiC HEMTs before and after Si3N4 passivation
Bernát, J.; Marso, Michel UL; Fox, A. et al

in Proc. 5th Intern. Conf. Advanced Semicon. Dev. & Microsystems ASDAM’04 (2004)

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See detailAgent-Based Optimization of Business Functions Using Coevolutionary Algorithms
Danoy, Grégoire UL; Bouvry, Pascal UL; Seredynski, Franciszek

in Proceedings of the International Conference on Information and Knowledge Engineering (2004)

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See detailA Formal Approach for the Specification and the Verification of UML Structural Properties: Application to E-Business Domain
Guelfi, Nicolas UL; Mammar, Amel UL; Ries, Benoît UL

in International Workshop on Software Verification and Validation (SVV 2004), workshop of ICFEM'04 (2004)

This paper presents a formal approach for the specification and the verification of UML diagrams against a set of structural properties. This work is part of the E-fficient research project, aiming at ... [more ▼]

This paper presents a formal approach for the specification and the verification of UML diagrams against a set of structural properties. This work is part of the E-fficient research project, aiming at building correct e-business processes. An e-business process is described using class and activity diagrams. The verification of structural properties gives a degree of confidence regarding the correctness of the related business process. Our proposal is based on the formal approach promoted by the USE tool. The USE approach aims at validating a particular state of an object model against properties described in OCL. The contributions of this paper are: the introduction of meta-model based on class diagrams for UML diagrams to be verified, rules for the translation of the class, object and activity diagrams into USE specifications, and the specification of structural properties in OCL. [less ▲]

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See detailUsing Data-Flow Analysis for Resilence and Result Checking in Peer to Peer Computations
Jafar, S.; Varrette, Sébastien UL; Roch, J.-L.

in Proc. of the 1th Intl. Workshop on Grid and Peer-to-Peer Computing Impacts on Large Scale Heterogeneous Distributed Database Systems (GLOBE'04) (2004)

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See detailADS: Directory Services for Mobile Ad-Hoc Networks Based on an Information Market Model
Hutter, Christian UL; Brust, Matthias R. UL; Rothkugel, Steffen UL

in Proceedings of 1st International Workshop on Ubiquitous Computing (IWUC-2004) held in conjunction with the 6th International Conference on Enterprise Information Systems (ICEIS 2004) (2004)

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See detailSparse Cooperative Q-learning
Kok, Jelle R.; Vlassis, Nikos UL

in Proc. 21st Int. Conf. on Machine Learning, Banff, Canada, (2004)

Learning in multiagent systems suffers from the fact that both the state and the action space scale exponentially with the number of agents. In this paper we are interested in using Q-learning to learn ... [more ▼]

Learning in multiagent systems suffers from the fact that both the state and the action space scale exponentially with the number of agents. In this paper we are interested in using Q-learning to learn the coordinated actions of a group of cooperative agents, using a sparse representation of the joint stateaction space of the agents. We first examine a compact representation in which the agents need to explicitly coordinate their actions only in a predefined set of states. Next, we use a coordination-graph approach in which we represent the Q-values by value rules that specify the coordination dependencies of the agents at particular states. We show how Q-learning can be efficiently applied to learn a coordinated policy for the agents in the above framework. We demonstrate the proposed method on the predator-prey domain, and we compare it with other related multiagent Q-learning methods. [less ▲]

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