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See detailA generalization of the concept of distance based on the simplex inequality
Kiss, Gergely UL; Marichal, Jean-Luc UL; Teheux, Bruno UL

in Beiträge zur Algebra und Geometrie / Contributions to Algebra and Geometry (in press)

We introduce and discuss the concept of \emph{$n$-distance}, a generalization to $n$ elements of the classical notion of distance obtained by replacing the triangle inequality with the so-called simplex ... [more ▼]

We introduce and discuss the concept of \emph{$n$-distance}, a generalization to $n$ elements of the classical notion of distance obtained by replacing the triangle inequality with the so-called simplex inequality \[ d(x_1, \ldots, x_n)~\leq~K\, \sum_{i=1}^n d(x_1, \ldots, x_n)_i^z{\,}, \qquad x_1, \ldots, x_n, z \in X, \] where $K=1$. Here $d(x_1,\ldots,x_n)_i^z$ is obtained from the function $d(x_1,\ldots,x_n)$ by setting its $i$th variable to $z$. We provide several examples of $n$-distances, and for each of them we investigate the infimum of the set of real numbers $K\in\left]0,1\right]$ for which the inequality above holds. We also introduce a generalization of the concept of $n$-distance obtained by replacing in the simplex inequality the sum function with an arbitrary symmetric function. [less ▲]

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See detailPartizipation in Großschutzgebieten - untersucht am Beispiel der Beteiligung an den Workshops zur Erstellung des Rahmenkonzeptes des Biosphärenreservates Bliesgau 2014
Nienaber, Birte UL

in Weber, Friedericke; Weber, Florian; Jenal, Corinna (Eds.) Wohin des Weges? Regionalentwicklung in Großschutzgebieten (in press)

In 2014 a process of public participation was initiated in order to produce a framework concept for the future configuration of the “Biosphere Bliesgau”. This paper presents characteristics of ... [more ▼]

In 2014 a process of public participation was initiated in order to produce a framework concept for the future configuration of the “Biosphere Bliesgau”. This paper presents characteristics of participation, both in general and in large-scale protected areas in particular, and discusses what various forms of participation (ranging from pure information as non-participation to bottom-up partnerships as the strongest form of participation) are possible. The empirical-analytical section of the paper investigates the 2014 process of participation in Biosphere Bliesgau, using publically available protocols and interviews. It can be seen that the top-down process – e. g. involving concrete agreements between individuals or groups – involves the selection of participants – intended or otherwise – and that the highest level of participation could therefore not be achieved. [less ▲]

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See detailOn the performance of an overlapping-domain parallelization strategy for Eulerian-Lagrangian Multiphysics software
Pozzetti, Gabriele UL; Besseron, Xavier UL; Rousset, Alban UL et al

in AIP Conference Proceedings ICNAAM 2017 (in press)

In this work, a strategy for the parallelization of a two-way CFD-DEM coupling is investigated. It consists on adopting balanced overlapping partitions for the CFD and the DEM domains, that aims to reduce ... [more ▼]

In this work, a strategy for the parallelization of a two-way CFD-DEM coupling is investigated. It consists on adopting balanced overlapping partitions for the CFD and the DEM domains, that aims to reduce the memory consumption and inter-process communication between CFD and DEM. Two benchmarks are proposed to assess the consistency and scalability of this approach, coupled execution on 252 cores shows that less than 1\% of time is used to perform inter-physics data exchange. [less ▲]

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See detailKommunale Selbstinszenierung im vorstädtischen Raum. Ein neuer Blick auf Leprosorien des Spätmittelalters und der frühen Neuzeit
Uhrmacher, Martin UL

in Hesse, Christian; Schulte, Daniela; Stercken, Martina (Eds.) Kommunale Selbstinszenierung (in press)

Abstract zur Tagung „Kommunale Selbstinszenierung“ der Internationalen Kommission für Stadtgeschichte, des Schweizerischen Arbeitskreises für Stadtgeschichte und des NCCR 'Mediality. Historical ... [more ▼]

Abstract zur Tagung „Kommunale Selbstinszenierung“ der Internationalen Kommission für Stadtgeschichte, des Schweizerischen Arbeitskreises für Stadtgeschichte und des NCCR 'Mediality. Historical Perspectives' Universität Zürich, 3./4./5. September 2015 Martin Uhrmacher (Universität Luxemburg) „Leprosorien als kommunale Repräsentationsbauten im vorstädtischen Raum. Ein neuer Blick auf eine bisher wenig beachtete städtische Baugattung“ Die vor den Mauern mittelalterlicher und frühneuzeitlicher Städte gelegenen Leprosorien werden heute zumeist noch immer als abgelegene und verborgene Orte der Exklusion angesehen, durch Zäune und Mauern von der Außenwelt getrennt. Dementsprechend wird auch der Baugattung „Leprosorium“ nur wenig architektonischer Wert zugebilligt, wie bspw. im Ausstellungskatalog „Aussatz – Lepra – Hansen-Krankheit: Demnach hatten sie „keinerlei repräsentative Bedeutung, im Gegenteil: eher unauffällig sollten sie sein, verborgen vor dem Blick der Stadtbewohner und Reisenden“. Im 2005 von Monika Escher und Frank G. Hirschmann publizierten Syntheseband „Die urbanen Zentren des hohen und späten Mittelalters“ zur Geschichte mittelalterlicher Städte zwischen Rhein und Maas werden Leprosorien zudem als „nicht wertungsrelevantes“ Urbanitäts- und Zentralitätskriterium“ bezeichnet; begründet mit der angeblichen „Tatsache, daß in der Regel der topographische Bezug zur Stadt gering war“. In der jüngeren Forschung hat sich diese Einschätzung nun grundlegend gewandelt. Leprosorien gelten aufgrund ihrer besonders prominent und exponiert ausgewählten Standorte an Kreuzungen, Brücken und Hauptausfallstraßen als präsente und das städtische Umland prägende kommunale Einrichtungen, die ein fester Bestandteil der städtischen Lebenswelt waren. Sie dienten nicht dazu, ihre Bewohner zu verstecken, sondern waren vielmehr mit Stiftungen und Spenden versehene städtische Einrichtungen, die vom Rat und den Bürgern auch als Prestigeobjekte betrachtet wurden. Anhand ausgewählter Beispiele wird aufgezeigt, wie Leprosorien als Repräsentationsobjekte der Stadtgemeinden auch dem bürgerlichen Selbstverständnis Ausdruck verliehen. [less ▲]

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See detailNeue Staaten – neue Grenzen. Die Rhein-Maas-Mosel-Region zwischen den Grenzbereinigungen des Ancien Régime und der Neuordnung durch den Wiener Kongress (1779 – 1816)
Uhrmacher, Martin UL

in Fickers, Andreas; Franz, Norbert; Laux, Stephan (Eds.) et al Repression, Reform und Neuordnung im Zeitalter der Revolutionen: Die Folgen des Wiener Kongresses für Westeuropa. Tagung und Workshop zum 200. Jahrestag des Abschlusses des Wiener Kongresses (in press)

Abstract Konferenz 200 Jahre Wiener Kongress Martin Uhrmacher Neue Staaten – neue Grenzen. Die Großregion zwischen den Grenzbereinigungen des Ancien Régime und der Neuordnung durch den Wiener Kongress ... [more ▼]

Abstract Konferenz 200 Jahre Wiener Kongress Martin Uhrmacher Neue Staaten – neue Grenzen. Die Großregion zwischen den Grenzbereinigungen des Ancien Régime und der Neuordnung durch den Wiener Kongress (1779 – 1816). Der Vortrag untersucht die Veränderung von Grenzen und Ihre Entwicklung von sich teils überlagernden und durch Enklaven und Gemeinsherrschaften durchsetzten historisch gewachsenen Grenzsäumen hin zu begradigten, fest definierten und teils naturräumlichen Scheidelinien folgenden Staatsgrenzen. In der heutigen Großregion vollzog sich dieser fundamentale Wandel in nur drei Jahrzehnten: Er gliederte die Region vollkommen neu. Zunächst waren es 1779 mit dem Brüsseler Vertrag nach jahrzehntelangen Verhandlungen endlich zu einem Ausgleich zwischen Österreich und Frankreich gekommen, der die Grenzstreitigkeiten beseitigte und neue, begradigte Grenzen exakt festlegte. Ein ähnlicher Vertrag wurde auch zwischen Österreich und Kurtrier abgeschlossen. Doch die als endgültig geplanten Regelungen bestanden nur wenige Jahre: Infolge der französischen Revolution annektierte die französische Republik am 1. Oktober 1795 die österreichischen Niederlande mit dem Herzogtum Luxemburg und kurz darauf auch Kurtrier und die anderen linksrheinischen Territorien. Alle Staaten wurden aufgelöst und gehörten nun zum französischen Staatsgebiet; Teile der alten Grenzen bestanden als Départementsgrenzen weiter. Nach der Absetzung Napoleons beschloss der Wiener Kongress 1815 eine Neuordnung Europas. Doch im Maas-Moselraum blieben mit Ausnahme Frankreichs alle Territorien und Landesherrschaften, die hier seit dem Früh- und Hochmittelalter bestanden hatten verschwunden. Sie wurden ersetzt durch das neu gegründete Großherzogtum Luxemburg und das ebenfalls neu gegründete Königreich der Vereinigten Niederlande sowie durch die preußische Rheinprovinz, die den gesamten östlichen Teil umfasste. Bei der territorialen Neugliederung griff man in Teilen auf die bis 1795 bestehenden Grenzen des alten Herzogtums zurück. In der Schlussakte des Wiener Kongresses behandeln die Artikel 66 bis 69 das Großherzogtum Luxemburg. Hier werden die Grenzen des neuen Staates allerdings nur grob umrissen; detaillierte Regelungen blieben späteren Verträgen vorbehalten. Unstrittig war die Süd- und Westgrenze mit Frankreich; sie entsprach der 1769/79 festgesetzten und bis 1795 gültigen Linie mit Ausnahme des ehemaligen Herzogtums Bouillon als Zugewinn. Vollkommen neu festgelegt wurde jedoch die Ostgrenze: Mit der Schlussakte des Wiener Kongresses waren alle hier an Luxemburg angrenzenden Gebiete an das Königreich Preußen gefallen. In den Verträgen von Aachen (26. Juni 1816) und Kleve (7. Oktober 1816) einigten sich die niederländische und die preußische Seite darauf, dass die Flussläufe von Mosel, Sauer und Our zukünftig die gemeinsame Grenze bildeten. Hier offenbart sich ein grundlegender Wandel im Verständnis und der Genese von Grenzen: Bisher waren territoriale Veränderungen auf Grundlage historisch gewachsener Herrschaftsstrukturen vorgenommen worden. So konnten kleinere Herrschaften aber auch größere Gebietskonglomerate zwar durch Tausch, Verkauf, Abtretung oder - wie durch Frankreich praktiziert - als „Reunionen“ die territoriale Zugehörigkeit wechseln. Dabei wurden jedoch die historisch gewachsenen Grenzen beachtet, sogar noch bei der Einrichtung der französischen Départements 1795. Mit der Wahl des Flußverlaufs von Sauer und Our als Grenze zwischen Luxemburg und Preußen wurde dieses Prinzip durchbrochen und ein naturräumliches Gliederungselement als neu geschaffene Grenze gewählt. [less ▲]

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See detailBandes dessinées im Fremdsprachenunterricht Französisch - Annäherung an eine empirisch fundierte Teilbereichsdidaktik
Morys, Nancy UL

Book published by Peter Lang Verlag - Kolloquium Fremdsprachenunterricht (in press)

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See detailAttention bias modification training for adolescents with chronic pain: A randomized placebo-controlled trial
Heathcote, Lauren C; Jacobs, Conrad; van Ryckeghem, Dimitri UL et al

in Pain (in press)

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See detailExploring gambling craving through the elaborated intrusion theory of desire: a mixed methods approach
Cornil, Aurélien; Lopez-Fernandez, Olatz; Devos, Gaëtan et al

in International Gambling Studies (in press)

Gambling disorder is a well-established behavioural addiction, which was classified with substance-related disorders in the fifth edition of the Diagnostic and Statistical Manual of Mental Disorders ... [more ▼]

Gambling disorder is a well-established behavioural addiction, which was classified with substance-related disorders in the fifth edition of the Diagnostic and Statistical Manual of Mental Disorders. Although craving was introduced as a new diagnostic criterion for substance-related disorders, it was not included for gambling disorder. This study aimed to explore the experience of gambling craving and to evaluate whether the elaborated intrusion theory of desire (EIT), a cognitive model of craving, fits gambling craving. A mixed methods study was conducted among 31 non-clinical gamblers. The qualitative part consisted of open-ended questions targeting the components of the EIT. The quantitative part consisted of a questionnaire designed to assess triggers and descriptions of gambling craving. Qualitative analysis revealed six distinct conceptual categories related to gambling craving: positive and negative affect, external cues, mental imageries, thoughts and physiological sensations. The quantitative analysis highlighted the most relevant triggers (e.g. spontaneous thoughts) and experiential characteristics (e.g. visual imagery) of gambling craving. The present study allowed the authors to support the relevance of the EIT as it applies to gambling craving by disentangling its core features. Findings from this study suggest that the use of interventions derived from the EIT may be relevant for problem gambling treatment. [less ▲]

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See detailJoint Precoding and On-Board Beamforming for Multiple gateway Multibeam Satellite Systems
Joroughi, Vahid UL

in Submitted to IEEE Journal on Selected topic in Communication (JSAC) (in press)

This paper aims to design joint precoding and onboard beamforming of a multiple gateway multibeam satellite system, either in a hybrid space-ground mode, or in a totally on-board one. In such an ... [more ▼]

This paper aims to design joint precoding and onboard beamforming of a multiple gateway multibeam satellite system, either in a hybrid space-ground mode, or in a totally on-board one. In such an architecture, with employing high throughput full frequency reuse pattern over both user and feeder links, each gateway serves a cluster of adjacent beams such that the adjacent clusters are served through a set of gateways that are located at different geographical areas. However, such a system brings in two challenges to overcome. First, the interference in both user and feeder links is the bottleneck of the whole system and applying interference mitigation techniques becomes necessary. Second, as the data demand increases, the ground and space segments should employ extensive bandwidth resources in the feeder link accordingly. This entails embedding an extra number of gateways aiming to support a fair balance between the increasing demand and the corresponding required feeder link resources. To solve these problems, this study investigates the impact of employing a joint multiple gateway architecture and on-board beamforming scheme. It is shown that by properly designing the on-board beamforming scheme, the number of gateways can be kept affordable even if the data demand increases. Moreover, Zero Forcing (ZF) precoding techniques are considered to cope with the interference in both user and feeder links which embed in the following premises: (i) each gateway constructs a part of block ZF precoding matrix, (ii) the satellite and gateways perform the precoding scheme, and (iii) a joint design of ZF precoding and on-board beamforming at the payload of the satellite so that no signal processing scheme is conceived at the gateways. The provided simulation results depict the performance gain obtained by our proposed schemes. [less ▲]

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See detailPain and Attention: Towards a Motivational Account
van Ryckeghem, Dimitri UL; Crombez, Geert

Book published by Oxford University Press (in press)

Attention plays a pivotal role in the experience of pain and its impact upon daily activities. Accordingly, research on the interplay between attention and pain has a long scientific history. Within this ... [more ▼]

Attention plays a pivotal role in the experience of pain and its impact upon daily activities. Accordingly, research on the interplay between attention and pain has a long scientific history. Within this chapter, we discuss the theoretical frameworks that aim to explain the relationship between attention and pain. We argue for a motivational perspective on pain that highlights the critical role of cognitive, affective and contextual factors in explaining the interplay between attention and pain. To substantiate this argument, we provide an overview of available research addressing the bottom-up capture of attention by pain and the top-down modulation (both inhibition and facilitation) of attention for pain. We conclude this chapter with guidelines and suggestions for future research and discuss clinical implications of adopting a motivational perspective on pain. [less ▲]

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See detailA Head-count Measure of Rank Mobility and Its Directional Decomposition
D'Ambrosio, Conchita UL; Bossert, Walter; Can, Burak

in Economica (in press)

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See detailTeachers´ judgments and decision making: Studies concerning the transition from primary to secondary education and their implications for teacher education
Krolak-Schwerdt, Sabine UL; Pit-Ten Cate, Ineke UL; Hörstermann, Thomas UL

in Zlatkin-Troitschanskaia, Olga (Ed.) Assessment of Learning Outcomes in Higher Education – Cross-national Comparisons and Perspectives (in press)

Accuracy in assessing academic achievement and potential is a core component of teachers’ diagnostic competence. Large-scale studies in the Luxembourgish and German educational systems show that teachers’ ... [more ▼]

Accuracy in assessing academic achievement and potential is a core component of teachers’ diagnostic competence. Large-scale studies in the Luxembourgish and German educational systems show that teachers’ secondary school track decisions are biased by a student’s social background. Therefore, biased assessment of students may contribute to the social inequalities observed in secondary schools in both countries. Within a social cognitive framework of dual-process theories, bias is explained by heuristic information processing, which, in contrast to information-integrating processing, relies on stereotype-based expectations to form judgments about students. A series of experimental studies investigated the information processing strategies of teachers, identifying a low accountability of the decision setting and a high consistency of student information as key moderators that promote stereotype-based information processing strategies in teachers’ school track decisions. Similar effects were shown for novice teachers at the beginning of their professional career. Further research evaluated intervention modules based on increased accountability, feedback, and increased knowledge about judgment formation processes. Results demonstrated that all evaluated intervention modules led to higher judgment accuracy and more information-integrating processing. Reviewing current models of teachers’ diagnostic competence, the findings on teachers’ information processing emphasized the need to include situational and process-oriented components into models of diagnostic competence. Beside a cognitive component – the ability to form accurate and unbiased judgments – diagnostic competence includes an adaptive choice of information processing strategies, depending on the accountability and information consistency of the judgment setting. Results on intervention modules gave insights how to increase diagnostic competence in teacher education programs. [less ▲]

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See detailEquivariant K-homology for hyperbolic reflection groups
Lafont, Jean-Francois; Ortiz, Ivonne; Rahm, Alexander UL et al

E-print/Working paper (in press)

We compute the equivariant K-homology of the classifying space for proper actions, for cocompact 3-dimensional hyperbolic reflection groups. This coincides with the topological K-theory of the reduced C ... [more ▼]

We compute the equivariant K-homology of the classifying space for proper actions, for cocompact 3-dimensional hyperbolic reflection groups. This coincides with the topological K-theory of the reduced C*-algebra associated to the group, via the Baum-Connes conjecture. We show that, for any such reflection group, the associated K-theory groups are torsion-free. This means that we can complete previous computations with rational coefficients to get results with integral coefficients. On the way, we establish an efficient criterion for checking torsion-freeness of K-theory groups, which can be applied far beyond the scope of the present paper. [less ▲]

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See detailThe efficacy of attentional distraction and sensory monitoring in chronic pain patients: A meta-analysis
van Ryckeghem, Dimitri UL; Van Damme, Stefaan; Eccleston, Chris et al

in Clinical Psychology Review (in press)

Attentional strategies, such as distraction and sensory monitoring, are often offered to reduce pain and pain-related distress. However, evidence for their efficacy in chronic pain patients is equivocal ... [more ▼]

Attentional strategies, such as distraction and sensory monitoring, are often offered to reduce pain and pain-related distress. However, evidence for their efficacy in chronic pain patients is equivocal. We report a meta-analysis on the efficacy of distraction and sensory monitoring in chronic pain patients, and explore possible methodological and theoretical moderators. The scientific literature was searched for relevant articles, which were coded for methodological quality and several theoretical and methodological moderator variables. Only 10 articles fulfilled the search criteria. Eight studies allowed us to compare distraction with a control condition, two studies to compare sensory monitoring with a control condition, and four studies to compare the effect of distraction with the effect of sensory monitoring. Overall, results indicate that distraction did not differ from control in altering pain experience (k=8; Hedges’ g=0.10, ns) and distress (k=2; Hedges’ g=0.549). Sensory monitoring did also not alter pain experience (k=2; Hedges’ g=-.21, ns) and distress (k=1; Hedges’ g=-0.191, ns). We found no evidence to support the superiority of distraction or sensory monitoring in altering pain compared to control conditions. We offer guidance for future theory-driven research to investigate distraction and sensory monitoring in this largely unexplored field, albeit one replete with methodological difficulties. [less ▲]

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See detailSustainability in small states: Luxembourg as a post-suburban space under growth pressure in need of a cross-national sustainability
Carr, Constance UL

in Brinkmann, Robert; Garren, Sandra J. (Eds.) The Palgrave Handbook of Sustainability: Case Studies and Practical Solutions (in press)

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See detailDas Deutsche als plurizentrische Sprache
Sieburg, Heinz UL; Solms, Hans-Joachim

in Zeitschrift für Deutsche Philologie (in press), 136(2017),

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See detail'Luxemburger Standarddeutsch'? Hintergründe und Perspektiven
Sieburg, Heinz UL

in Zeitschrift für Deutsche Philologie (in press), 136(2017), 125-143

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See detailConfidence judgment in a temporal generalization task: Accuracy and sensitivity to task difficulty
Lamotte, Mathilde UL; Droit-Volet, Sylvie; Izaute, Marie

in Année Psychologique (L') (in press)

This study on metacognition of time examined the confidence judgment in the temporal generalization task when the difficulty of temporal discrimination increased, in three different standard duration ... [more ▼]

This study on metacognition of time examined the confidence judgment in the temporal generalization task when the difficulty of temporal discrimination increased, in three different standard duration conditions. The results showed that participants’ confidence judgments were accurate for all comparison durations similar to the standard duration and varied only for the comparison durations shorter or longer than the standard duration. The confidence judgment did not change with the standard duration condition; except for an overconfidence level for the comparison durations longer than the standard in the shortest standard duration condition. Moreover, the results showed that the overconfidence level increases with the increase in temporal discrimination difficulty, although an underconfidence level was found but only for the shortest comparison durations. The implication in terms of decision processes for the generalization temporal task and in terms of metacognitive processes are discussed. [less ▲]

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See detailStadt‐ und Raumentwicklung Luxemburg
Chilla, Tobias; Schulz, Christian UL

in Akademie für Raumforschung und Landesplanung (Ed.) Handwörterbuch der Stadt‐ und Raumentwicklung (in press)

Die räumliche Entwicklung Luxemburgs ist geprägt von einer hohen sozio-ökonomischen Dynamik mit starken grenzüberschreitenden Verflechtungen. Erst in den vergangenen 15 Jahren etwa ist ein modernes ... [more ▼]

Die räumliche Entwicklung Luxemburgs ist geprägt von einer hohen sozio-ökonomischen Dynamik mit starken grenzüberschreitenden Verflechtungen. Erst in den vergangenen 15 Jahren etwa ist ein modernes Planungssystem etabliert worden, das auf kommunaler wie nationaler Ebene verankert ist. [less ▲]

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See detailMéthodes de design UX : 30 méthodes fondamentales pour concevoir des expériences optimales
Lallemand, Carine UL; Gronier, Guillaume

Book published by Eyrolles - 2nd ed. (in press)

Detailed reference viewed: 31 (0 UL)