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Peer Reviewed
See detail"But I don’t have the time !" : time, learning and agency in the workplace
de Saint-Georges, Ingrid UL

Scientific Conference (2008, May)

Detailed reference viewed: 26 (0 UL)
Peer Reviewed
See detailBUT4Reuse Feature identifier: Identifying reusable features on software variants
Martinez, Jabier UL; Ziadi, Tewfik; Klein, Jacques UL et al

Poster (2014)

Detailed reference viewed: 156 (27 UL)
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See detailBuybacks around the world
Vermaelen, Theo UL; Peyer, Urs; Manconi, Alberto

E-print/Working paper (2013)

Detailed reference viewed: 65 (1 UL)
See detailLe bwatoo et les dialectes de la région de Koné (Nouvelle-Calédonie)
Rivierre, Jean-Claude; Ehrhart, Sabine UL; Diela, Raymond

Book published by Peeters (2006)

Detailed reference viewed: 52 (1 UL)
See detailBye bye, Siegfried : Der lange Abschied der Luxemburger Frauen vom Patriarchat
Wagener, Renée UL

in In: Not the girl you’re looking for : Melusina rediscovered : Objekt+ Subjekt Frau in der Kultur Luxemburgs. (2010)

Detailed reference viewed: 51 (3 UL)
See detailBypassing (a lack of) archives: a prosopography approach of the history of the European Court of Justice, 1950s-1970s
Fritz, Vera UL

Presentation (2018)

Ever since its landmark decisions Van Gend en Loos and Costa v. ENEL, the European Court of Justice (ECJ) has played a key role in the so-called ‘constitutionalization’ of the European legal order. The ... [more ▼]

Ever since its landmark decisions Van Gend en Loos and Costa v. ENEL, the European Court of Justice (ECJ) has played a key role in the so-called ‘constitutionalization’ of the European legal order. The fact that its jurisprudence has given EU law a proto-federal framework has been demonstrated, analyzed and commented in countless publications by legal scholars and social scientists, who have tried to grasp how the ECJ could consistently pursue its active prointegration path without provoking a rebellion by the Member States. In the historiography of the EU, however, the ECJ was for many decades largely absent. The main reason for this absence is the Court’s long-standing lack of willingness to give researchers access to its archives. It was only in 2016, that the first archival documents from the ECJ were made available to the public at the Historical Archives of the European Union in Florence. Long awaited, they reveal little about the functioning of the Court. This paper presents how I have in my research used a prosopographical approach to raise the following challenge: if the ECJ does not (really) let us inside via its archives, can we get inside by studying those who worked at the Court, and above all, the main protagonists behind its case law, the judges? Could an investigation of their social and professional backgrounds, a study of their networks and convictions towards European integration, the analysis of their academic writings and personal papers, give us an unprecedented peak behind the curtains of European judicial decision-making? This presentation shows that (and how) knowing more about the judges reveals a lot about the functioning of the ECJ in the period in which it laid the foundations of the constitutionalization (1950s to 1970s). By providing key insights on the visions that the first generations of judges had on Europe and their role in the European constructions process, it reveals the dynamics that prevailed inside the Court and explains why the bench of judges became outright provocative in the 1970s. The prosopographical approach also brings to the surface new knowledge on the Court’s relationship with the Member States of the European communities. By laying bare why the first and highly decisive European judicial decision-makers were chosen by the governments, the collective biographies give new insights into the Member States’ expectations with regard to the institution and their reaction towards its provocative case law. Finally, the prosopographical approach reveals that the ECJ had a very active political network, which it used to pursue its strategic legal and political interests, and make sure that it would in its jurisprudence not go to a point where it risked being overthrown by the governments. [less ▲]

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Peer Reviewed
See detailBypassing Federal Education Policies. The OECD and the Case of Switzerland
Bürgi, Regula UL

in IJHE Bildungsgeschichte (2012), 1(2), 24-35

Detailed reference viewed: 80 (9 UL)
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See detailBypassing the Combinatorial Explosion: Using Similarity to Generate and Prioritize T-wise Test Suites for Large Software Product Lines
Henard, Christopher UL; Papadakis, Mike UL; Perrouin, Gilles UL et al

Report (2012)

Software Product Lines (SPLs) are families of products whose commonalities and variability can be captured by Feature Models (FMs). T-wise testing aims at finding errors triggered by all interactions ... [more ▼]

Software Product Lines (SPLs) are families of products whose commonalities and variability can be captured by Feature Models (FMs). T-wise testing aims at finding errors triggered by all interactions amongst t features, thus reducing drastically the number of products to test. T-wise testing approaches for SPLs are limited to small values of t -- which miss faulty interactions -- or limited by the size of the FM. Furthermore, they neither prioritize the products to test nor provide means to finely control the generation process. This paper offers (a) a search-based approach capable of generating products for large SPLs, forming a scalable and flexible alternative to current techniques and (b) prioritization algorithms for any set of products. Experiments conducted on 124 FMs (including large FMs such as the Linux kernel) demonstrate the feasibility and the practicality of our approach. [less ▲]

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Peer Reviewed
See detailByzantine Resilient Protocol for the IoT
Fröhlich, Antônio Augusto; Scheffel, M.Roberto; Kozhaya, David et al

in IEEE Internet of Things Journal (2018)

Wireless sensor networks, often adhering to a single gateway architecture, constitute the communication backbone for many modern cyber-physical systems. Consequently, faulttolerance in CPS becomes a ... [more ▼]

Wireless sensor networks, often adhering to a single gateway architecture, constitute the communication backbone for many modern cyber-physical systems. Consequently, faulttolerance in CPS becomes a challenging task, especially when accounting for failures (potentially malicious) that incapacitate the gateway or disrupt the nodes-gateway communication, not to mention the energy, timeliness, and security constraints demanded by CPS domains. This paper aims at ameliorating the fault-tolerance of WSN based CPS to increase system and data availability. To this end, we propose a replicated gateway architecture augmented with energy-efficient real-time Byzantineresilient data communication protocols. At the sensors level, we introduce FT-TSTP, a geographic routing protocol capable of delivering messages in an energy-efficient and timely manner to multiple gateways, even in the presence of voids caused by faulty and malicious sensor nodes. At the gateway level, we propose a multi-gateway synchronization protocol, which we call ByzCast, that delivers timely correct data to CPS applications, despite the failure or maliciousness of a number of gateways. We show, through extensive simulations, that our protocols provide better system robustness yielding an increased system and data availability while meeting CPS energy, timeliness, and security demands. [less ▲]

Detailed reference viewed: 122 (9 UL)
See detailC wie C'est la vie
Heimböckel, Dieter UL

Article for general public (2012)

Detailed reference viewed: 69 (4 UL)
Peer Reviewed
See detail‘C'est canard’ – ‘C'est un vert’. Der Artikelgebrauch im frühen gesteuerten Erwerb des Französischen
Ziegler, Gudrun UL; Mutz, Katrin

in Zeitschrift für Literaturwissenschaft und Linguistik [= LiLi] (2003), 33(131), 76-105

At an early stage of instructed foreign language learning (French), young learners develop a simplest language which reflects similarities with adult learner varieties, Creole systems and strategies of ... [more ▼]

At an early stage of instructed foreign language learning (French), young learners develop a simplest language which reflects similarities with adult learner varieties, Creole systems and strategies of (first) language acquisition. Due to the fact that their L1 (German) has still to be extended, especially in terms of the written variety, learners interact in an environment with specific language use. Considering young learners language production, examples of article use in instructed interaction were investigated. [less ▲]

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See detailC'est quoi, ce mythe fondateur?
Scuto, Denis UL

Article for general public (2015)

Weekly column on contemporary history ("L'histoire du temps présent") in Luxembourg newspaper Tageblatt, here on the Second World War as founding myth for Luxembourg

Detailed reference viewed: 72 (2 UL)
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See detailC’était extrêmement violent» Il y a 100 ans, la révolution de Février a provoqué la fin de l’Empire russe
Paravantis, Spero UL

E-print/Working paper (2017)

La révolution de Février, qui s'est déroulée du 8 mars (23 février) 1917 au 13 mars (28 février) 1917, marque le début de la révolution russe de 1917. Elle force l'abdication du tsar Nicolas II et ... [more ▼]

La révolution de Février, qui s'est déroulée du 8 mars (23 février) 1917 au 13 mars (28 février) 1917, marque le début de la révolution russe de 1917. Elle force l'abdication du tsar Nicolas II et provoque la fin de l'Empire russe. Un gouvernement provisoire dirige, mais la même année, la révolution d'Octobre met au pouvoir des bolcheviks et permet la création de l'Union des républiques socialistes soviétiques (URSS). Le chercheur au «Centre for Contemporary and Digital History» à l’Université du Luxembourg, Dr. Spero S.Z. Paravantis nous détaille ce chapitre de l’histoire. [less ▲]

Detailed reference viewed: 62 (12 UL)
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See detailThe C*-algebras of certain Lie groups
Günther, Janne-Kathrin UL

Doctoral thesis (2016)

In this doctoral thesis, the C*-algebras of the connected real two-step nilpotent Lie groups and the Lie group SL(2,R) are characterized. Furthermore, as a preparation for an analysis of its C*-algebra ... [more ▼]

In this doctoral thesis, the C*-algebras of the connected real two-step nilpotent Lie groups and the Lie group SL(2,R) are characterized. Furthermore, as a preparation for an analysis of its C*-algebra, the topology of the spectrum of the semidirect product U(n) x H_n is described, where H_n denotes the Heisenberg Lie group and U(n) the unitary group acting by automorphisms on H_n. For the determination of the group C*-algebras, the operator valued Fourier transform is used in order to map the respective C*-algebra into the algebra of all bounded operator fields over its spectrum. One has to find the conditions that are satisfied by the image of this C*-algebra under the Fourier transform and the aim is to characterize it through these conditions. In the present thesis, it is proved that both the C*-algebras of the connected real two-step nilpotent Lie groups and the C*-algebra of SL(2,R) fulfill the same conditions, namely the “norm controlled dual limit” conditions. Thereby, these C*-algebras are described in this work and the “norm controlled dual limit” conditions are explicitly computed in both cases. The methods used for the two-step nilpotent Lie groups and the group SL(2,R) are completely different from each other. For the two-step nilpotent Lie groups, one regards their coadjoint orbits and uses the Kirillov theory, while for the group SL(2,R) one can accomplish the calculations more directly. [less ▲]

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See detailThe C*-algebras of connected real two-step nilpotent Lie groups
Günther, Janne-Kathrin UL; Ludwig, Jean

E-print/Working paper (2014)

Using the operator valued Fourier transform, the C*-algebras of connected real two-step nilpotent Lie groups are characterized as algebras of operator fields defined over their spectra. In particular, it ... [more ▼]

Using the operator valued Fourier transform, the C*-algebras of connected real two-step nilpotent Lie groups are characterized as algebras of operator fields defined over their spectra. In particular, it is shown by explicit computations, that the Fourier transform of such C*-algebras fulfills the norm controlled dual limit property. [less ▲]

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Peer Reviewed
See detailThe C*-algebras of connected real two-step nilpotent Lie groups
Günther, Janne-Kathrin UL; Ludwig, Jean

in Revista Matemática Complutense (2015)

Using the operator valued Fourier transform, the C*-algebras of connected real two-step nilpotent Lie groups are characterized as algebras of operator fields defined over their spectra. In particular, it ... [more ▼]

Using the operator valued Fourier transform, the C*-algebras of connected real two-step nilpotent Lie groups are characterized as algebras of operator fields defined over their spectra. In particular, it is shown by explicit computations, that the Fourier transform of such C*-algebras fulfills the norm controlled dual limit property. [less ▲]

Detailed reference viewed: 116 (7 UL)
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See detailThe C*-algebras of real two-step nilpotent Lie groups
Günther, Janne-Kathrin UL

Speeches/Talks (2015)

Using the operator valued Fourier transform, the C*-algebras of connected real two-step nilpotent Lie groups are characterized as algebras of operator fields defined over their spectra. In particular, it ... [more ▼]

Using the operator valued Fourier transform, the C*-algebras of connected real two-step nilpotent Lie groups are characterized as algebras of operator fields defined over their spectra. In particular, it is shown by explicit computations, that the Fourier transform of such C*-algebras fulfills the norm controlled dual limit property. [less ▲]

Detailed reference viewed: 69 (5 UL)
Full Text
See detailC++ implementation of 2D PHT splines
Peng, Xuan; Bordas, Stéphane UL

Learning material (2016)

Detailed reference viewed: 127 (4 UL)