Last 7 days
Bookmark and Share    
See detailAuf dem Weg zur mehrsprachigen Bildung in der frühen Kindheit
Kirsch, Claudine UL

in Universität Luxembourg (Ed.) Bildungsbericht.Bildungsverläufe und Bildungserfolge (2018)

Detailed reference viewed: 27 (1 UL)
Peer Reviewed
See detail‘Pas de fraises pour Noël’. Le rôle de la régionalité locavore dans la (re)prise de conscience de la saisonnalité des aliments 
Reckinger, Rachel UL

in Adamiec, Camille; Julien, Marie-Pierre; Régnier, Faustine (Eds.) L’alimentation au fil des saisons. La saisonnalité des pratiques alimentaires (2018)

Detailed reference viewed: 24 (0 UL)
Peer Reviewed
See detailThe Metonymical Institutionnalisation of Wine Production and Consumption in Luxembourg. Convergence of Terroir Typicity, Political Symbolism, Regulations and Scientific Knowledge
Reckinger, Rachel UL

in Tedeschi, Paolo (Ed.) The Evolution of the Viticulture and Winemaking in Europe: Production, Retail System, Oenological Techniques, Terroir and Local Culture (19th-20th Centuries) (2018)

Detailed reference viewed: 12 (0 UL)
Full Text
Peer Reviewed
See detailA Contribution to Cyber-Physical Systems Security: an Event-based Attack-tolerant Control Approach
Bezzaoucha, Souad UL; Voos, Holger UL

in Proceedings of 10th IFAC Symposium on Fault Detection, Supervision and Safety for Technical Processes, SAFEPROCESS 2018 (2018, August 29)

In the present paper, a model-based fault/attack tolerant scheme is proposed to deal with cyber-threats on Cyber Physicals Systems. A common scheme based on observers is designed and a state feedback ... [more ▼]

In the present paper, a model-based fault/attack tolerant scheme is proposed to deal with cyber-threats on Cyber Physicals Systems. A common scheme based on observers is designed and a state feedback control based on an event-triggered framework is given with control synthesis and condition on the switching time. An event-based implementation is proposed in order to achieve novel security strategy. Observer and controller gains are deduced by solving su cient Bilinear Matrix Inequality (BMI) condition. Simulation results on a real-time laboratory three tank system are given to show the attack-tolerant control ability despite data deception attacks on both actuators and sensors. [less ▲]

Detailed reference viewed: 30 (5 UL)
Full Text
Peer Reviewed
See detailA Decoupling Approach to Design Observers for Polytopic Takagi-Sugeno Models Subject to Unknown Inputs
Bezzaoucha, Souad UL; Voos, Holger UL; Davila, Jorge et al

in Proceedings of the 2018 American Control Conference (2018, June 27)

A decoupling approach for state estimation of nonlinear systems represented in the polytopic Takagi-Sugeno with unmeasurable premise variables subject to unknown inputs is proposed in this paper. The idea ... [more ▼]

A decoupling approach for state estimation of nonlinear systems represented in the polytopic Takagi-Sugeno with unmeasurable premise variables subject to unknown inputs is proposed in this paper. The idea consists in defining a state and unknown input transformations in order to divide the state vector into two parts, a measurable part and an observable one (decoupled from the unknown input). A classical Luenberger observer to estimate the unmeasurable part is then designed and given in terms of Linear Matrix Inequalities (LMIs) conditions. A numerical example is also presented in order to illustrate the proposed approach. [less ▲]

Detailed reference viewed: 17 (1 UL)
Full Text
Peer Reviewed
See detailCyber Security and Vulnerability Analysis of Networked Control System subject to False-Data injection
Gerard, Benjamin; Bezzaoucha, Souad UL; Voos, Holger UL et al

in Proceedings of the 2018 American Control Conference (2018, June 27)

In the present paper, the problem of networked control system (NCS) cyber security is considered. The geometric approach is used to evaluate the security and vulnerability level of the controlled system ... [more ▼]

In the present paper, the problem of networked control system (NCS) cyber security is considered. The geometric approach is used to evaluate the security and vulnerability level of the controlled system. The proposed results are about the so-called false data injection attacks and show how imperfectly known disturbances can be used to perform undetectable, or at least stealthy, attacks that can make the NCS vulnerable to attacks from malicious outsiders. A numerical example is given to illustrate the approach. [less ▲]

Detailed reference viewed: 24 (2 UL)
Full Text
Peer Reviewed
See detailORBIT - Overcoming Breakdowns in Teams with Interactive Tabletops
Sunnen, Patrick UL; Arend, Béatrice UL; Maquil, Valérie

in Kay, Judy; Luckin, Rose (Eds.) Rethinking learning in the digital age: Making the Learning Sciences count (2018, June)

ORBIT implements and studies a joint problem-solving activity at an interactive tabletop providing participants with the opportunity to develop their collaboration methods by jointly overcoming breakdowns ... [more ▼]

ORBIT implements and studies a joint problem-solving activity at an interactive tabletop providing participants with the opportunity to develop their collaboration methods by jointly overcoming breakdowns. The design and the research process relies on user-centered design methods and on an ethnomethodological conversation analytic framework. The project will generate scientific knowledge on participants’ collaboration methods and create a powerful collaborative learning tool. [less ▲]

Detailed reference viewed: 57 (9 UL)
Full Text
Peer Reviewed
See detailThrough a century of change: portrait of a pragmatic visionary
Danescu, Elena UL

in Journal of European Integration History = Zeitschrift für Geschichte der Europäischen Integration = Revue d'Histoire de l'Intégration Européenne (2018)

As Prime Minister and Finance Minister of Luxembourg over several decades, Pierre Werner shaped the future of his country and was one of the rare statesmen to play a part in the progress of European ... [more ▼]

As Prime Minister and Finance Minister of Luxembourg over several decades, Pierre Werner shaped the future of his country and was one of the rare statesmen to play a part in the progress of European integration until the mid-1980s. He played a major role in regional integration (BLEU, Benelux) and in EEC policy-making and gained a strong reputation for forging a political consensus between larger powers (Germany and France)and between diametrically opposed positions (‘economists’ vs ‘monetarists’). In this way he succeeded in defending Luxembourg’s vital interests, from the financial centre to the seats of the European institutions. Werner was involved in the major ideological debates of the time. Although initially in favour of a monetary approach, Werner was one of the first to develop arguments for a symmetrical economic and monetary union. [less ▲]

Detailed reference viewed: 6 (1 UL)
Full Text
Peer Reviewed
See detail« La double démocratie. Une Europe politique pour la croissance » (Michel Aglietta et Nicolas Leron, 2017)
Danescu, Elena UL

in Journal of European Integration History = Zeitschrift für Geschichte der Europäischen Integration = Revue d'Histoire de l'Intégration Européenne (2018)

Ce texte receille des notes de lecture critiques relatives à l'analyse interdisciplinaire réalisée par Michel Aglietta et Nicolas Lerron dans leur ouvrage « La double démocratie. Une Europe politique pour ... [more ▼]

Ce texte receille des notes de lecture critiques relatives à l'analyse interdisciplinaire réalisée par Michel Aglietta et Nicolas Lerron dans leur ouvrage « La double démocratie. Une Europe politique pour la croissance », récemment publié aux Éditions du Seuil. Les auteurs placent leur analyse dans une perspective historique, avec l’objectif d’expliquer pourquoi l’Europe est plus vulnérable que les autres région du monde et d’identifier les moyens de donner de nouvelles impulsions au projet européen. Le constat des auteurs est sans appel : l’Union européenne et la zone euro sont aujourd’hui en impasse. Parmi les principales causes, ils identifient l’impuissance publique, les interdépendances négatives entre les États membres et le caractère incomplet de l’UEM. Ils mettent également en lumière une crise de la méthode de l’intégration européenne, vu que le postulat de l’engrenage, ou encore celui des petits pas prôné par Jean Monnet semblent avoir épuisé toutes leurs potentialités. [less ▲]

Detailed reference viewed: 18 (1 UL)
Full Text
Peer Reviewed
See detailComputationally and Energy Efficient Symbol-Level Precoding Communications Demonstrator
Krivochiza, Jevgenij UL; Merlano Duncan, Juan Carlos UL; Andrenacci, Stefano UL et al

in Physical Communication (2018), 28

We present a precoded multi-user communication test-bed to demonstrate forward link interference mitigation techniques in a multi-beam satellite system scenario, which will enable a full frequency reuse ... [more ▼]

We present a precoded multi-user communication test-bed to demonstrate forward link interference mitigation techniques in a multi-beam satellite system scenario, which will enable a full frequency reuse scheme. The developed test-bed provides an end-to-end precoding demonstration, which includes a transmitter, a multi-beam satellite channel emulator and user receivers. Each of these parts can be reconfigured accordingly to the desired test scenario. Precoded communications allow full frequency reuse in multiple-input multiple-output (MIMO) channel environments, where several coordinated antennas simultaneously transmit to a number of independent receivers. The developed real-time transmission test-bed assist in demonstrating, designing and benchmarking of the new Symbol-Level Precoding (SLP) techniques, where the data information is used, along with the channel state information, in order to exploit the multi-user interference and transform it into the useful power at the receiver side. The demonstrated SLP technique is designed in order to be computationally efficient, and can be generalized to others multi-channel interference scenarios. [less ▲]

Detailed reference viewed: 49 (8 UL)
Full Text
Peer Reviewed
See detailA Mathematical Model and a Firefly Algorithm for an Extended Flexible Job Shop Problem with Availability Constraints
Tessaro Lunardi, Willian UL; Cherri, Luiz Henrique; Voos, Holger UL

in 17th International Conference on Artificial Intelligence and Soft Computing, Zakopane, Poland, June 3-7, 2018 (2018, June)

Manufacturing scheduling strategies have historically ignored the availability of the machines. The more realistic the schedule, more accurate the calculations and predictions. Availability of machines ... [more ▼]

Manufacturing scheduling strategies have historically ignored the availability of the machines. The more realistic the schedule, more accurate the calculations and predictions. Availability of machines will play a crucial role in the Industry 4.0 smart factories. In this paper, a mixed integer linear programming model (MILP) and a discrete firefly algorithm (DFA) are proposed for an extended multi-objective FJSP with availability constraints (FJSP-FCR). Several standard instances of FJSP have been used to evaluate the performance of the model and the algorithm. New FJSP-FCR instances are provided. Comparisons among the proposed methods and other state-of-the-art reported algorithms are also presented. Alongside the proposed MILP model, a Genetic Algorithm is implemented for the experiments with the DFA. Extensive investigations are conducted to test the performance of the proposed model and the DFA. The comparisons between DFA and other recently published algorithms shows that it is a feasible approach for the stated problem. [less ▲]

Detailed reference viewed: 28 (6 UL)
Peer Reviewed
See detailLe rapport Werner en suspens. Les débats autour de l'Union économique et monétaire en 1973
Danescu, Elena UL

in Wilkens, Andreas (Ed.) Une année particulière: 1973 et les tourments de l'Europe (2018)

Detailed reference viewed: 56 (14 UL)
See detailLe discours rapporté… une question de temps
Barthelmebs-Raguin, Hélène UL; Komur-Thilloy, Greta; Marnette, Sophie et al

Book published by Classiques Garnier (2018)

Detailed reference viewed: 28 (4 UL)
Full Text
Peer Reviewed
See detailLes bourgeois de Bohême et l’impossible légitimation ? La conjuration de Prague et de Kutná Hora de février 1309
Vomacka, Eloïse UL

in Contester au Moyen Âge : de la désobéissance à la révolte (2018, May 23)

Detailed reference viewed: 23 (1 UL)
See detailDystonie und Neurochirurgie
Hertel, Frank UL

in Bächli, Heidi; Lütschg, Jürg; Messing-Jünger, Martina (Eds.) Pädiatrische Neurochirurgie (2018)

Praxisorientiert und reich bebildert sind alle Erkrankungen, die bei Kindern einen neurochirurgischen Eingriff erforderlich machen, in diesem Buch beschrieben. Der Schwerpunkt liegt auf den diagnostischen ... [more ▼]

Praxisorientiert und reich bebildert sind alle Erkrankungen, die bei Kindern einen neurochirurgischen Eingriff erforderlich machen, in diesem Buch beschrieben. Der Schwerpunkt liegt auf den diagnostischen und therapeutischen Entscheidungen sowie auf den zahlreichen Unterschieden, die bei Kindern im Vergleich zum Vorgehen bei Erwachsenen zu berücksichtigen sind. Neben den Indikationen zur Operation sind mit dem Ziel übergreifender Therapiekonzepte auch die konservativen Behandlungsmöglichkeiten berücksichtigt. Experten aus dem ganzen deutschsprachigen Raum konnten als Autoren für die Kapitel zu den einzelnen Themen gewonnen werden. [less ▲]

Detailed reference viewed: 6 (0 UL)
Full Text
Peer Reviewed
See detailTowards the Systematic Analysis of Non-Functional Properties in Model-Based Engineering for Real-Time Embedded Systems
Brau, Guillaume UL; Navet, Nicolas UL; Hugues, Jérôme

in Science of Computer Programming (2018), 156

The real-time scheduling theory provides analytical methods to assess the temporal predictability of embedded systems. Nevertheless, their use is limited in a Model-Based Systems Engineering approach. In ... [more ▼]

The real-time scheduling theory provides analytical methods to assess the temporal predictability of embedded systems. Nevertheless, their use is limited in a Model-Based Systems Engineering approach. In fact, the large number of applicability conditions makes the use of real-time scheduling analysis tedious and error-prone. Key issues are left to the engineers: when to apply a real-time scheduling analysis? What to do with the analysis results?} This article presents an approach to systematize and then automate the analysis of non-functional properties in Model-Based Systems Engineering. First, preconditions and postconditions define the applicability of an analysis. In addition, contracts specify the analysis interfaces, thereby enabling to reason about the analysis process. We present a proof-of-concept implementation of our approach using a combination of constraint languages (REAL for run-time analysis) and specification languages (Alloy for describing interfaces and reasoning about them). This approach is experimented on architectural models written with the Architecture Analysis and Design Language (AADL). [less ▲]

Detailed reference viewed: 31 (2 UL)
Full Text
Peer Reviewed
See detailTime to Clean Your Test Objectives
Marcozzi, Michaël; Bardin, Sébastien; Kosmatov, Nikolai et al

in 40th International Conference on Software Engineering, May 27 - 3 June 2018, Gothenburg, Sweden (2018, May)

Detailed reference viewed: 29 (1 UL)
Full Text
Peer Reviewed
See detailLate heartbeat-evoked potentials are associated with survival after cardiac arrest
Schulz, André UL; Stammet, P.; Dierolf, A. M. et al

in Resuscitation (2018), 126(1), 7-13

RATIONALE: Cardiac arrest (CA) is a serious condition characterized by high mortality rates, even after initial successful resuscitation, mainly due to neurological damage. Whether brain-heart ... [more ▼]

RATIONALE: Cardiac arrest (CA) is a serious condition characterized by high mortality rates, even after initial successful resuscitation, mainly due to neurological damage. Whether brain-heart communication is associated with outcome after CA is unknown. Heartbeat-evoked brain potentials (HEPs) represent neurophysiological indicators of brain-heart communication. The aim of this study was to address the association between HEPs and survival after CA. METHODS: HEPs were calculated from resting EEG/ECG in 55 CA patients 24 hours after resuscitation. All patients were treated with targeted temperature management and a standardized sedation protocol during assessment. We investigated the association between HEP amplitude (180- 320 ms, 455-595 ms, 860-1000 ms) and 6-month survival. RESULTS: Twenty-five of 55 patients (45%) were still alive at 6-month follow-up. Survivors showed a higher HEP amplitude at frontopolar and frontal electrodes in the late HEP interval than non-survivors. This effect remained significant after controlling for between-group differences in terms of age, Fentanyl dose, and time lag between resuscitation and EEG assessment. There were no group differences in heart rate or heart rate variability. CONCLUSION: Brain-heart communication, as reflected by HEPs, is associated with survival after CA. Future studies should address the brain-heart axis in CA. [less ▲]

Detailed reference viewed: 38 (3 UL)