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See detailIntergenerational Family Solidarity across Europe
Albert, Isabelle UL; Emirhafizovic, Mirza; Shpigelman, Carmit-Noa et al

in Albert, Isabelle; Emirhafizovic, Mirza; Shpigelman, Carmit-Noa (Eds.) et al Families and family values in society and culture (in press)

The global trend of ageing populations is particularly pronounced in Europe. In the wake of increased life expectancies, intergenerational family relationships have become more and more important over the ... [more ▼]

The global trend of ageing populations is particularly pronounced in Europe. In the wake of increased life expectancies, intergenerational family relationships have become more and more important over the last few decades. The COST Action INTERFASOL started from the claim that in light of these developments societies need to develop mechanisms, programs and policies that will support solidarity between the young, middle and older generations. Although considerable research activities in the field of intergenerational relations have been carried out in the last years, a lack in coordination and integration of different studies from different settings was noted. Bringing together research from different countries to coordinate studies and synthesize results is not an easy endeavor but it has turned out as a fruitful venture: INTERFASOL has been successful in bringing together researchers from 28 different countries meeting regularly, discussing current issues and not least producing a large number of publications and research proposals. One outcome of the COST Action is this volume which has the aim to become a reference for all those who are interested in intergenerational relations in Europe: the chapters will provide the basis and a starting point for further research. [less ▲]

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See detailLarge degrees in scale-free inhomogeneous random graphs
Bhattacharjee, Chinmoy UL; Schulte, Matthias

in Annals of Applied Probability (in press)

We consider a class of scale-free inhomogeneous random graphs, which includes some long-range percolation models. We study the maximum degree in such graphs in a growing observation window and show that ... [more ▼]

We consider a class of scale-free inhomogeneous random graphs, which includes some long-range percolation models. We study the maximum degree in such graphs in a growing observation window and show that its limiting distribution is Frechet. We achieve this by proving convergence of the underlying point process of the degrees to a certain Poisson process. Estimating the index of the power-law tail for the typical degree distribution is an important question in statistics. We prove consistency of the Hill estimator for the inverse of the tail exponent of the typical degree distribution. [less ▲]

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See detailUne sémiotique du numérique : spectre d’effectuations et réénonciations – Le cas du DVD
Tore, Gian Maria UL

in Klock-Fontanille, Isabelle (Ed.) Transmission en acte(s) (in press)

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See detail‘It’s the political economy..!’ A moment of truth for the eurozone and the EU
Dani, Marco; Chiti, Edoardo; Mendes, Joana UL et al

in International Journal of Constitutional Law (in press)

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See detailLe principe de coopération loyale
Neframi, Eleftheria UL

in Jean Bernard Auby, Jacqueline Dutheil de la Rochère (Ed.) Traité de droit administratif européen (in press)

Etude du rôle du principe de coopération loyale, en tant que principe distinct des principes spécifiques qui régissent l’administration indirecte

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See detailVolumes of quasifuchsian manifolds
Schlenker, Jean-Marc UL

in Surveys in Differential Geometry, vol 24 (in press)

Quasifuchsian hyperbolic manifolds, or more generally convex co-compact hyperbolic manifolds, have infinite volume, but they have a well-defined ``renormalized'' volume. We outline some relations between ... [more ▼]

Quasifuchsian hyperbolic manifolds, or more generally convex co-compact hyperbolic manifolds, have infinite volume, but they have a well-defined ``renormalized'' volume. We outline some relations between this renormalized volume and the volume, or more precisely the ``dual volume'', of the convex core. On one hand, there are striking similarities between them, for instance in their variational formulas. On the other, object related to them tend to be within bounded distance. Those analogies and proximities lead to several questions. Both the renormalized volume and the dual volume can be used for instance to bound the volume of the convex core in terms of the Weil-Petersson distance between the conformal metrics at infinity. [less ▲]

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See detailGender and Education in Luxembourg and Beyond: Local Challenges and New Perspectives
Kerger, Sylvie UL; Brasseur, Laurence UL

Book published by Melusina Press (in press)

The subject of gender and education is gaining momentum and attracting increasing interest around the world. In Luxembourg, however, it is still often marginal in the public – and professional – eye. The ... [more ▼]

The subject of gender and education is gaining momentum and attracting increasing interest around the world. In Luxembourg, however, it is still often marginal in the public – and professional – eye. The aim of this volume is to increase the visibility of gender and education by bringing together perspectives from Luxembourg and the international community. Different authors will contribute to considerations of how the discourse can be applied to – and amplified in – the Luxembourg context. Academics, practitioners/professionals and activists will shed light on the issues at stake in thought-provoking pieces, which will provide an inspirational starting point for future theory and practice. [less ▲]

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See detailA refinement indicator for adaptive quasicontinuum approaches for structural lattices
Chen, Li UL; Berke, Peter; Massart, Thierry et al

in International Journal for Numerical Methods in Engineering (in press)

The quasicontinuum method is a concurrent multiscale approach in which lattice models are fully resolved in small regions of interest and coarse-grained elsewhere. Since the method was originally proposed ... [more ▼]

The quasicontinuum method is a concurrent multiscale approach in which lattice models are fully resolved in small regions of interest and coarse-grained elsewhere. Since the method was originally proposed to accelerate atomistic lattice simulations, its refinement criteria – that drive refining coarse-grained regions and/or increasing fully-resolved regions – are generally associated with quantities relevant to the atomistic scale. In this contribution, a new refinement indicator is presented, based on the energies of dedicated cells at coarse-grained domain surfaces. This indicator is incorporated in an adaptive scheme of a generalization of the quasicontinuum method able to consider periodic representative volume elements, like the ones employed in most computational homogenization approaches. However, this indicator can also be used for conventional quasicontinuum frameworks. Illustrative numerical examples of elastic indentation and scratch of different lattices demonstrate the capabilities of the refinement indicator and its impact on adaptive quasicontinuum simulations. [less ▲]

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See detailFamily in a multicultural context: Country report for Luxembourg
Albert, Isabelle UL; Heinz, Andreas UL

in Albert, Isabelle; Emirhafizovic, Mirza; Shpigelman, Carmit-Noa (Eds.) et al Families and family values in society and culture (in press)

The Grand Duchy of Luxembourg is a small country in the heart of Europe, neighbouring France, Germany and Belgium, counting on 1 January of 2019 613.894 inhabitants on a total area of 2,586 km² ... [more ▼]

The Grand Duchy of Luxembourg is a small country in the heart of Europe, neighbouring France, Germany and Belgium, counting on 1 January of 2019 613.894 inhabitants on a total area of 2,586 km². Immigration and cultural diversity have become one of the key features in the last years as the share of foreigners has constantly increased to now 47% of the population (Statec, 2019). Recent migrants live on the territory along with ageing migrants who are now close to retirement, as well as earlier generations of migrants. Luxembourg can therefore today be characterized as super-diverse (Vertovec, 2007) and is seen as a sample case for European integration, certainly of high interest also regarding intergenerational family solidarity in the light of migration. We will outline the complex demographic picture in the following sections, focusing on socio-economic aspects as well as social policy issues and have then a closer look on intergenerational family solidarity and future areas of research. [less ▲]

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See detailExamining Gender (In-)Equality in German Engineering: Considering the Importance of Interest, Perceptions, and Choice
Dusdal, Jennifer UL; Fernandez, Frank

in Ro, Hyun Kyoung; Fernandez, Frank; House, Brittany (Eds.) Gender Equity in STEM in Higher Education: International Perspectives on Policy, Institutional Culture, and Individual Choice (in press)

Germany leads Europe in producing and publishing STEM scholarship. We consider how Germany’s higher education prepares its STEM workforce with a focus on ways gender inequality persists in undergraduate ... [more ▼]

Germany leads Europe in producing and publishing STEM scholarship. We consider how Germany’s higher education prepares its STEM workforce with a focus on ways gender inequality persists in undergraduate engineering education. In this chapter, we analyse panel data from the German Centre for Higher Education Research and Science Studies (DZHW) to examine the interests, perceptions, and choices of women who ultimately decide not to study engineering. We identify reasons why women may choose not to pursue engineering education and offer implications for recruiting women into engineering. Finally, we highlight promising policies and practices to attract women into STEM. [less ▲]

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See detailHigher Education Organizations as Strategic Actors in Networks: Institutional and Relational Perspectives Meet Social Network Analysis
Dusdal, Jennifer UL; Zapp, Mike UL; Marques, Marcelo et al

in Theory and Method in Higher Education Research (in press), 7

Informed by multiple disciplines, theories, and methods, higher education scholars have developed a robust and diverse literature in many countries. Yet, some important (organizational) sociological ... [more ▼]

Informed by multiple disciplines, theories, and methods, higher education scholars have developed a robust and diverse literature in many countries. Yet, some important (organizational) sociological perspectives, both more established and more recent, are insufficiently linked. In particular, we identify two theoretical strands—institutional and relational—that, when joined, help to explain contemporary developments in global higher education and yield new organizational insights. We review relevant literature from each perspective, both in their general formulations and with specific reference to contemporary higher education research. Within the broad institutional strand, we highlight Strategic Action Fields, organizational actorhood, and associational memberships. Within the relational strand, we focus on ties and relationships that are especially crucial as science has entered an age of (inter)national research collaboration. Across these theories, we discuss linkages between concepts, objects, and levels of analysis. We explore the methodological approach of social network analysis as it offers great potential to connect these strands and thus to advance contemporary higher education research in a collaborative era. [less ▲]

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See detailTrace-Checking CPS Properties: Bridging the Cyber-Physical Gap
Menghi, Claudio UL; Vigano, Enrico UL; Bianculli, Domenico UL et al

in Proceedings of the 43rd International Conference on Software Engineering (ICSE 2021) (in press)

Cyber-physical systems combine software and physical components. Specification-driven trace-checking tools for CPS usually provide users with a specification language to express the requirements of ... [more ▼]

Cyber-physical systems combine software and physical components. Specification-driven trace-checking tools for CPS usually provide users with a specification language to express the requirements of interest, and an automatic procedure to check whether these requirements hold on the execution traces of a CPS. Although there exist several specification languages for CPS, they are often not sufficiently expressive to allow the specification of complex CPS properties related to the software and the physical components and their interactions. In this paper, we propose (i) the Hybrid Logic of Signals (HLS), a logic-based language that allows the specification of complex CPS requirements, and (ii) ThEodorE, an efficient SMT-based trace-checking procedure. This procedure reduces the problem of checking a CPS requirement over an execution trace, to checking the satisfiability of an SMT formula. We evaluated our contributions by using a representative industrial case study in the satellite domain. We assessed the expressiveness of HLS by considering 212 requirements of our case study. HLS could express all the 212 requirements. We also assessed the applicability of ThEodorE by running the trace-checking procedure for 747 trace-requirement combinations. ThEodorE was able to produce a verdict in 74.5% of the cases. Finally, we compared HLS and ThEodorE with other specification languages and trace-checking tools from the literature. Our results show that, from a practical standpoint, our approach offers a better trade-off between expressiveness and performance. [less ▲]

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See detailBad representations and homotopy groups of Character Varieties
Guerin, Clément UL; Lawton, Sean; Ramras, Daniel

in Algebras and Representation Theory (in press)

Let G be a connected, reductive, complex affine algebraic group, and let Xr denote the moduli space of G-valued representations of a rank r free group. We first characterize the singularities in Xr ... [more ▼]

Let G be a connected, reductive, complex affine algebraic group, and let Xr denote the moduli space of G-valued representations of a rank r free group. We first characterize the singularities in Xr resolving conjectures of Florentino-Lawton. In particular, we compute the codimension of the orbifold singular locus using facts about Borel-de Siebenthal groups. We then use this codimension to calculate some higher homotopy groups of the smooth locus of Xr, proving conjectures of Florentino-Lawton-Ramras. Lastly, using the earlier analysis of Borel-de Siebenthal groups, we prove a conjecture of Sikora about CI Lie groups. [less ▲]

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See detailPenser les francophonies au risque du genre
Barthelmebs-Raguin, Hélène UL

in Léger, Thierry; Hervé, Louis; Panaité, Oana (Eds.) Champs littéraires et langues de la francophonie-monde. Trajectoires, figures et émergence de la nouvelle cartographie des humanités en français (in press)

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See detailPassé au féminin dans la littérature africaine. Penser l’auctorialité, retrouver ses racines
Barthelmebs-Raguin, Hélène UL

in Kuhnle, Till R.; Bauer, Lydia (Eds.) Forcer le monde à venir au monde ». Le renouvellement de la représentation de l’Afrique à travers la littérature (in press)

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See detailA Natural Experiment on Job Insecurity and Fertility in France
Clark, Andrew UL; Lepinteur, Anthony UL

in Review of Economics and Statistics (in press)

Job insecurity can have wide-ranging consequences outside of the labour market. We here argue that it reduces fertility amongst the employed. The 1999 rise in the French Delalande tax, paid by large ... [more ▼]

Job insecurity can have wide-ranging consequences outside of the labour market. We here argue that it reduces fertility amongst the employed. The 1999 rise in the French Delalande tax, paid by large private firms when they laid off workers aged over 50, produced an exogenous rise in job insecurity for younger workers in these firms. A difference-in-differences analysis of French ECHP data reveals that this greater job insecurity for these under-50s significantly reduced their probability of having a new child by 3.7 percentage points (with a 95% confidence interval between 0.7 and 6.6 percentage points). Reduced fertility is only found at the intensive margin: job insecurity reduces family size but not the probability of parenthood itself. Our results also suggest negative selection into parenthood, as this fertility effect does not appear for low-income and less-educated workers. [less ▲]

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See detailStudent Response Systems in Remote Teaching
Botev, Jean UL; Grevisse, Christian UL; Rothkugel, Steffen UL

in Proceedings of the 23rd International Conference on Human-Computer Interaction (HCI International) (in press)

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See detail§§ 53a bis 56 AktG zur Gleichbehandlung der Aktionäre und Nebenabreden mit Aktionären
Zetzsche, Dirk Andreas UL

in Zetzsche, Dirk Andreas; Noack, Ulrich (Eds.) Kölner Kommentar zum Aktiengesetz (in press)

Detailed reference viewed: 21 (1 UL)