References of "E-prints/Working papers"      in Complete repository Arts & humanities   Archaeology   Art & art history   Classical & oriental studies   History   Languages & linguistics   Literature   Performing arts   Philosophy & ethics   Religion & theology   Multidisciplinary, general & others Business & economic sciences   Accounting & auditing   Production, distribution & supply chain management   Finance   General management & organizational theory   Human resources management   Management information systems   Marketing   Strategy & innovation   Quantitative methods in economics & management   General economics & history of economic thought   International economics   Macroeconomics & monetary economics   Microeconomics   Economic systems & public economics   Social economics   Special economic topics (health, labor, transportation…)   Multidisciplinary, general & others Engineering, computing & technology   Aerospace & aeronautics engineering   Architecture   Chemical engineering   Civil engineering   Computer science   Electrical & electronics engineering   Energy   Geological, petroleum & mining engineering   Materials science & engineering   Mechanical engineering   Multidisciplinary, general & others Human health sciences   Alternative medicine   Anesthesia & intensive care   Cardiovascular & respiratory systems   Dentistry & oral medicine   Dermatology   Endocrinology, metabolism & nutrition   Forensic medicine   Gastroenterology & hepatology   General & internal medicine   Geriatrics   Hematology   Immunology & infectious disease   Laboratory medicine & medical technology   Neurology   Oncology   Ophthalmology   Orthopedics, rehabilitation & sports medicine   Otolaryngology   Pediatrics   Pharmacy, pharmacology & toxicology   Psychiatry   Public health, health care sciences & services   Radiology, nuclear medicine & imaging   Reproductive medicine (gynecology, andrology, obstetrics)   Rheumatology   Surgery   Urology & nephrology   Multidisciplinary, general & others Law, criminology & political science   Civil law   Criminal law & procedure   Criminology   Economic & commercial law   European & international law   Judicial law   Metalaw, Roman law, history of law & comparative law   Political science, public administration & international relations   Public law   Social law   Tax law   Multidisciplinary, general & others Life sciences   Agriculture & agronomy   Anatomy (cytology, histology, embryology...) & physiology   Animal production & animal husbandry   Aquatic sciences & oceanology   Biochemistry, biophysics & molecular biology   Biotechnology   Entomology & pest control   Environmental sciences & ecology   Food science   Genetics & genetic processes   Microbiology   Phytobiology (plant sciences, forestry, mycology...)   Veterinary medicine & animal health   Zoology   Multidisciplinary, general & others Physical, chemical, mathematical & earth Sciences   Chemistry   Earth sciences & physical geography   Mathematics   Physics   Space science, astronomy & astrophysics   Multidisciplinary, general & others Social & behavioral sciences, psychology   Animal psychology, ethology & psychobiology   Anthropology   Communication & mass media   Education & instruction   Human geography & demography   Library & information sciences   Neurosciences & behavior   Regional & inter-regional studies   Social work & social policy   Sociology & social sciences   Social, industrial & organizational psychology   Theoretical & cognitive psychology   Treatment & clinical psychology   Multidisciplinary, general & others     Showing results 301 to 400 of 1149     1 2 3 4 5 6 7 8 9     Internetdelikte und die Herausforderungen des Forum ShoppingsSchmitz, Sandra E-print/Working paper (2017)Detailed reference viewed: 43 (1 UL) Übergewicht bei Schülern in LuxemburgResidori, Caroline ; Kern, Matthias Robert ; Heinz, Andreas et alE-print/Working paper (2017)Detailed reference viewed: 75 (16 UL) Mechanizing Principia Logico-Metaphysica in Functional Type TheoryKirchner, Daniel; Benzmüller, Christoph ; Zalta, Edward N.E-print/Working paper (2017)Principia Logico-Metaphysica proposes a foundational logical theory for metaphysics, mathematics, and the sciences. It contains a canonical development of Abstract Object Theory [AOT], a metaphysical ... [more ▼]Principia Logico-Metaphysica proposes a foundational logical theory for metaphysics, mathematics, and the sciences. It contains a canonical development of Abstract Object Theory [AOT], a metaphysical theory (inspired by ideas of Ernst Mally, formalized by Zalta) that differentiates between ordinary and abstract objects. This article reports on recent work in which AOT has been successfully represented and partly automated in the proof assistant system Isabelle/HOL. [less ▲]Detailed reference viewed: 86 (3 UL) L'ethnographie du travailde Saint-Georges, Ingrid E-print/Working paper (2017)Detailed reference viewed: 59 (2 UL) Family, Community and Life-Cycle Earnings: Evidence from Siblings and Youth PeersBingley, Paul; Cappellari, Lorenzo; Tatsiramos, Konstantinos E-print/Working paper (2017)Detailed reference viewed: 51 (2 UL) Trianguline Galois representations and Schur functorsConti, Andrea E-print/Working paper (2017)Given a B-pair W and a Schur functor S, we show under some general assumptions that W is trianguline if and only if S(W) is. This is an extension of earlier work of Di Matteo. We derive some consequences ... [more ▼]Given a B-pair W and a Schur functor S, we show under some general assumptions that W is trianguline if and only if S(W) is. This is an extension of earlier work of Di Matteo. We derive some consequences on the behavior of local Galois representations under morphisms of Langlands dual groups. We attach to a Schur functor a map between the trianguline deformation spaces defined by Hellmann, and we study congruence loci on the Hecke-Taylor-Wiles varieties constructed by Breuil, Hellmann and Schraen for unitary groups. [less ▲]Detailed reference viewed: 14 (1 UL) Time Averages of Markov Processes and Applications to Two-Timescale ProblemsPepin, Bob E-print/Working paper (2017)Detailed reference viewed: 37 (0 UL) 3D Printing: The Next 5 years by Claude Wolf – Into the Future engineered by the ZsWolf, Claude E-print/Working paper (2017)3D Printing: The Next 5 years by Claude Wolf – Into the Future engineered by the Zs The future of 3D Printing or Additive Manufacturing [AM] will be driven by the next generation of engineers who are just ... [more ▼]3D Printing: The Next 5 years by Claude Wolf – Into the Future engineered by the Zs The future of 3D Printing or Additive Manufacturing [AM] will be driven by the next generation of engineers who are just about to qualify, the Z generation (1994-2010). Do we, educators, know this Z generation? Do we know what motivates them? The Z generation is a generation of digital natives interacting with PCs, iPads, smartphones and the internet since birth, a pragmatic and short term orientated generation. Our prejudice brands them as unprepared and unmotivated, with their 10 second attention spans, but in reality, they have already proven they are creative, determined and hardworking as well as team oriented, when they are given the opportunity. They have understood that 3D printing offers them this opportunity. [less ▲]Detailed reference viewed: 160 (22 UL) Tommaso Padoa-Schioppa [biography]Chiocchetti, Paolo E-print/Working paper (2017)Tommaso Padoa-Schioppa (1940-2010) was an Italian banker, economist, and politician. He was one of the "architects of the euro" and helped to push forward the financial, monetary, and economic integration ... [more ▼]Tommaso Padoa-Schioppa (1940-2010) was an Italian banker, economist, and politician. He was one of the "architects of the euro" and helped to push forward the financial, monetary, and economic integration of Europe. [less ▲]Detailed reference viewed: 22 (2 UL) Weakly Inscribed Polyhedrachen, hao; Schlenker, Jean-Marc E-print/Working paper (2017)Detailed reference viewed: 36 (1 UL) Dynamics of Income Rank Volatility: Evidence from Germany and the USChauvel, Louis ; Hartung, Anne ; Palmisano, FlavianaE-print/Working paper (2017)This paper presents a methodology for comparing income rank volatility profiles over time and across distributions. While most of the existing measures are affected by changes in marginal distributions ... [more ▼]This paper presents a methodology for comparing income rank volatility profiles over time and across distributions. While most of the existing measures are affected by changes in marginal distributions, this paper proposes a framework that is based on individuals’ relative positions in the distribution, and is neutral in relation to structural changes that occur in the economy. Applying this approach to investigate rank volatility in Germany and the US over three decades, we show that while poorer individuals within both countries are the most volatile, the volatility trend for the middle class in each of these countries differs. [less ▲]Detailed reference viewed: 149 (13 UL) Towards a Quantitative Averaging Principle for Stochastic Differential EquationsPepin, Bob E-print/Working paper (2017)Detailed reference viewed: 41 (0 UL) Isogeometric analysis of thin Reissner-Mindlin plates and shells: Locking phenomena and generalized local B-bar methodHu, Qingyuan ; Xia, Yang; Natarajan, Sundararajan et alE-print/Working paper (2017)We propose a generalized local $\bar{B}$ framework, addressing locking in degenerated Reissner-Mindlin plate and shell formulations in the context of isogeometric analysis. Parasitic strain components are ... [more ▼]We propose a generalized local $\bar{B}$ framework, addressing locking in degenerated Reissner-Mindlin plate and shell formulations in the context of isogeometric analysis. Parasitic strain components are projected onto the physical space locally, i.e. at the element level, using a least-squares approach. The formulation is general and allows the flexible utilization of basis functions of different order as the projection bases. The present formulation is much cheaper computationally than the global $\bar{B}$ method. Through numerical examples, we show the consistency of the scheme, although the method is not Hu-Washizu variationally consistent. The numerical examples show that the proposed formulation alleviates locking and yields good accuracy for various thicknesses, even for slenderness ratios of $1 \times 10^5$, and has the ability to capture deformations of thin shells using relatively coarse meshes. From the detailed numerical study, it can be opined that the proposed method is less sensitive to locking and mesh distortion. [less ▲]Detailed reference viewed: 217 (15 UL) Democratic legitimacy [glossary]Chiocchetti, Paolo E-print/Working paper (2017)A political institution is legitimate when it succeeds in persuading people of the normative necessity of its existence. In a democratic system, this can be based both on various forms of popular consent ... [more ▼]A political institution is legitimate when it succeeds in persuading people of the normative necessity of its existence. In a democratic system, this can be based both on various forms of popular consent (democratic legitimacy) and on other kinds of foundations (generic legitimacy). With reference to the European Union, debates have focused on empirical support for the EU, the nature of its "democratic deficit", and the potential conflict between European integration and national democratic sovereignty. [less ▲]Detailed reference viewed: 38 (0 UL) Reductions of points on algebraic groupsLombardo, Davide; Perucca, Antonella E-print/Working paper (2017)Detailed reference viewed: 43 (6 UL) Notes on the Schwarzian tensor and measured foliations at infinity of quasifuchsian manifolds.Schlenker, Jean-Marc E-print/Working paper (2017)The boundary at infinity of a quasifuchsian hyperbolic manifold is equiped with a holomorphic quadratic differential. Its horizontal measured foliation $f$ can be interpreted as the natural analog of the ... [more ▼]The boundary at infinity of a quasifuchsian hyperbolic manifold is equiped with a holomorphic quadratic differential. Its horizontal measured foliation $f$ can be interpreted as the natural analog of the measured bending lamination on the boundary of the convex core. This analogy leads to a number of questions. We provide a variation formula for the renormalized volume in terms of the extremal length $\ext(f)$ of $f$, and an upper bound on $\ext(f)$. \par We then describe two extensions of the holomorphic quadratic differential at infinity, both valid in higher dimensions. One is in terms of Poincar\'e-Einstein metrics, the other (specifically for conformally flat structures) of the second fundamental form of a hypersurface in a "constant curvature" space with a degenerate metric, interpreted as the space of horospheres in hyperbolic space. This clarifies a relation between linear Weingarten surfaces in hyperbolic manifolds and Monge-Amp\ere equations. Notes aiming at clarifying the relations between different points of view and introducing one new notion, no real result. Not intended to be submitted at this point [less ▲]Detailed reference viewed: 27 (1 UL) Arbeitsmotivation von Arbeitnehmern in LuxemburgSischka, Philipp ; Steffgen, Georges E-print/Working paper (2017)Die europäische Studie EWCS (Eurofund, 2016a, 2016b) zeigt auf, dass sich die Arbeitsmotivation der Arbeitnehmer in Luxemburg eher im mittleren Bereich wiederfindet. Die nationale Studie Quality of Work ... [more ▼]Die europäische Studie EWCS (Eurofund, 2016a, 2016b) zeigt auf, dass sich die Arbeitsmotivation der Arbeitnehmer in Luxemburg eher im mittleren Bereich wiederfindet. Die nationale Studie Quality of Work Index belegt nur geringfügige Unterschiede der Arbeitsmotivation sowohl zwischen männlichen und weiblichen Arbeitnehmern als auch zwischen den verschiedenen Altersgruppen. Arbeitnehmer in einer Vorgesetztenposition, Manager und Führungskräfte zeigen im Durchschnitt eine höhere, Hilfsarbeitskräfte dagegen im Durchschnitt eine geringere Arbeitsmotivation. Überdurchschnittlich motiviert erweisen sich Arbeitnehmer in Nichtregierungsorganisationen (NGO). Die Arbeitsmotivation ist dabei mit verschiedenen psychosozialen Abeitsbedingungen sowie Arbeitsrahmenbedingungen korreliert. Parizipation an Entscheidungen, Feedback von Kollegen und Vorgesetzten, Kooperation unter Kollegen sowie Rollenklarheit sind positiv mit Arbeitsmotivation assoziert, das Erleben von Konkurrenz und Mobbing sind hingegen negativ assoziiert. Hinsichtlich Arbeitsrahmenbedingungen weist vor allem Arbeitsplatzsicherheit einen hohen Zusammenhang mit der Arbeitsmotivation auf, gefolgt von Einkommenszufriedenheit und Ausbildungsmöglichkeiten. [less ▲]Detailed reference viewed: 102 (10 UL) Herman Van Rompuy [biography]Chiocchetti, Paolo E-print/Working paper (2017)Herman Van Rompuy (b. 1947) is a Belgian and European politician. In his capacity as President of the European Council (2009-2014), he played a key role in the EU's response to the financial crisis and in ... [more ▼]Herman Van Rompuy (b. 1947) is a Belgian and European politician. In his capacity as President of the European Council (2009-2014), he played a key role in the EU's response to the financial crisis and in the strengthening of the European framework of economic governance. [less ▲]Detailed reference viewed: 39 (0 UL) Wolfgang Schäuble [biography]Chiocchetti, Paolo E-print/Working paper (2017)Wolfgang Schäuble (b. 1942) is an active German politician. He played a key role in the German reunification process (1989-90) and in the management of the Eurozone crisis (since 2009).Detailed reference viewed: 25 (0 UL) Solidarity [glossary]Chiocchetti, Paolo E-print/Working paper (2017)The principle of solidarity plays a key role in discussions of social, economic, and political issues. A polysemic notion, it may interrogate either individuals or public authorities. It often represents ... [more ▼]The principle of solidarity plays a key role in discussions of social, economic, and political issues. A polysemic notion, it may interrogate either individuals or public authorities. It often represents the counterpart of competition in the analysis and assessment of social norms and public policies. [less ▲]Detailed reference viewed: 27 (0 UL) Who Trade at Better Prices?Wolff, Christian ; Ekkayokkaya, ManapolE-print/Working paper (2017)Detailed reference viewed: 23 (0 UL) Localisation résidentielle de la population étrangère selon la nationalité et la structure urbaine au LuxembourgPigeron-Piroth, Isabelle ; Heinz, Andreas ; Caruso, Geoffrey E-print/Working paper (2017)The number of foreigners living in Luxembourg is still rising and represents today about 48% of the inhabitants. This study focuses on the description and mapping of the place of residence for the ... [more ▼]The number of foreigners living in Luxembourg is still rising and represents today about 48% of the inhabitants. This study focuses on the description and mapping of the place of residence for the different nationalities living in Luxembourg. It seeks to underline differences through indicators built from the 2011 census data. We focus on the territorial distribution of the different nationalities by taking into account the urban structure and distance to jobs. If differences according to nationalities in the residential behavior of households can be empirically identified they may raise issues of spatial equity and (un)equal accessibility to job market. We analyse whether the geographic location of different nationalities in Luxembourg is linked to urbanisation level, the distance to the “poles d´emploi” or general accessibility to jobs. [less ▲]Detailed reference viewed: 182 (5 UL) The European Commission’s "Reflection Paper on Harnessing Globalisation"Chiocchetti, Paolo E-print/Working paper (2017)The new EC reflection paper on globalisation sets new accents, but contains no major departure from current policy orientations. It takes a clear stand for free trade, while attacking "unfair competition ... [more ▼]The new EC reflection paper on globalisation sets new accents, but contains no major departure from current policy orientations. It takes a clear stand for free trade, while attacking "unfair competition" and arguing for a "balanced, rules-based and progressive trade and investment agenda". Despite its insistence on a managed globalisation and a fair redistribution of its benefits, its proposals are unlikely to allay domestic anxieties and external criticism. [less ▲]Detailed reference viewed: 47 (1 UL) 3. Forschungsbericht zur Weiterentwicklung des Arbeitsqualitätsindexes in LuxemburgSischka, Philipp ; Steffgen, Georges E-print/Working paper (2017)Der Survey zu dem „Quality of Work Index Luxembourg“ (QoW), der von der Universität Luxemburg und der luxemburgischen Chambre des Salariés entwickelt wurde (Steffgen, Kohl, 2013; Sischka, Steffgen, 2015 ... [more ▼]Der Survey zu dem „Quality of Work Index Luxembourg“ (QoW), der von der Universität Luxemburg und der luxemburgischen Chambre des Salariés entwickelt wurde (Steffgen, Kohl, 2013; Sischka, Steffgen, 2015, 2016), wurde 2016 bereits zum vierten Mal mittels einer telefonischen Befragung durchgeführt. Ziel des Index ist es, die erlebte Arbeitssituation und -qualität luxemburgischer Arbeitnehmer zu erfassen. Der vorliegende Bericht dokumentiert die psychometrische Testung der Güte des aktuellen Erhebungsinstruments. Dazu erfolgt zunächst eine Beschreibung der für die Skalen genutzten Items, die Überprüfung der internen Konsistenz der jeweiligen Skala mittels verschiedener Reliabilitätsstatistiken (Cronbach’s Alpha, Korrelationsanalysen der Items) sowie Koeffizienten zur Beschreibung der Skalenverteilung. Explorative und konfirmatorische Faktorenanalysen dienen dazu, zu testen, ob die Items auf den a priori festgelegten Faktoren laden und ob sich die unterstellte Faktorenstruktur auch in den Daten zeigt. Außerdem werden die Zusammenhänge der Skalen mittels Korrelationsanalysen überprüft. Die QoW-Skalen werden außerdem auf verschiedene Well-Being-Skalen regressiert, um deren Relevanz für den QoW-Index zu prüfen. Da der QoW Survey teilweise als Panelbefragung durchgeführt wird, wird außerdem geklärt, ob es hinsichtlich demographischer Eigenschaften der Befragten, hinsichtlich der QoW-Skalen oder hinsichtlich verschiedener Well-Being-Maße zu systematischen Ausfällen seit der letzten Welle gekommen ist. Ebenso werden einige Längsschnitt-Regressionsanalysen gerechnet, um zu überprüfen, ob einige Arbeitsbedingungen längerfristige Effekte auf das Well-Being der Arbeitnehmer aufweisen. Abschließend wird das gesamte Erhebungsinstrument zusammenfassend diskutiert und Empfehlungen bezüglich der weiteren Entwicklung der Skalen gegeben. [less ▲]Detailed reference viewed: 33 (1 UL) Cross-border mergers and acquisitions: Evidence from IndochinaWolff, Christian E-print/Working paper (2017)Detailed reference viewed: 29 (1 UL) State of the Art in Lightweight Symmetric CryptographyBiryukov, Alex ; Perrin, Léo Paul E-print/Working paper (2017)Lightweight cryptography has been one of the hot topics'' in symmetric cryptography in the recent years. A huge number of lightweight algorithms have been published, standardized and/or used in ... [more ▼]Lightweight cryptography has been one of the hot topics'' in symmetric cryptography in the recent years. A huge number of lightweight algorithms have been published, standardized and/or used in commercial products. In this paper, we discuss the different implementation constraints that a lightweight'' algorithm is usually designed to satisfy. We also present an extensive survey of all lightweight symmetric primitives we are aware of. It covers designs from the academic community, from government agencies and proprietary algorithms which were reverse-engineered or leaked. Relevant national (\nist{}...) and international (\textsc{iso/iec}...) standards are listed. We then discuss some trends we identified in the design of lightweight algorithms, namely the designers' preference for \arx{}-based and bitsliced-S-Box-based designs and simple key schedules. Finally, we argue that lightweight cryptography is too large a field and that it should be split into two related but distinct areas: \emph{ultra-lightweight} and \emph{IoT} cryptography. The former deals only with the smallest of devices for which a lower security level may be justified by the very harsh design constraints. The latter corresponds to low-power embedded processors for which the \aes{} and modern hash function are costly but which have to provide a high level security due to their greater connectivity. [less ▲]Detailed reference viewed: 1230 (12 UL) La restructuration des dettes publiques saisie par le droit de l'Union européenneAllemand, Frederic E-print/Working paper (2017)En juillet 2015, le sommet de la zone euro fait part de l'existence de "sérieux doutes" sur le caractère soutenable de la dette grecque. La possibilité d'un reprofilage de la dette est envisagé et sa ... [more ▼]En juillet 2015, le sommet de la zone euro fait part de l'existence de "sérieux doutes" sur le caractère soutenable de la dette grecque. La possibilité d'un reprofilage de la dette est envisagé et sa discussion reportée à la réalisation de la première évaluation des mesures d'ajustement mises en oeuvre par la Grèce. Toute décote nominale est cependant formellement exclue, car contraire au droit de l'Union. Les discussions se sont ouvertes au printemps 2016 sur les modalités d'allègement de la dette publique de la Grèce. Le sujet a été au coeur de la réunion de l'Eurogroupe du 22 mai. Aucun accord n'a été trouvé, mais les discussions continuent. Dans ce contexte, Frédéric Allemand a présenté le 17 mai dernier une communication sur la saisine des opérations de restructuration par le droit de l'Union lors du séminaire de recherche pluridisciplinaire "Les administrations publiques à l'épreuve de leur dette" organisé par Jean-François Boudet (Université Paris II) et Caroline Lequesne-Roth (Université de Nice). L'auteur conclut à la compétence de l'Union pour encadrer la restructuration des dettes publiques des États membres. [less ▲]Detailed reference viewed: 120 (1 UL) Understanding audit oversight transformation : ramifications of institutional work and the power of (de-)mythologizingLöhlein, Lukas; Muessig, Anke E-print/Working paper (2017)This study investigates the dynamics that transformed audit oversight in Germany from an instrument, organized by the profession, to maintain international legitimacy into a regulatory regime that is ... [more ▼]This study investigates the dynamics that transformed audit oversight in Germany from an instrument, organized by the profession, to maintain international legitimacy into a regulatory regime that is integrated into the state apparatus. While prior research has focused on countries where the global demand for oversight structures overlapped with local pressures for regulatory reforms, we examine the diffusion of patterns of control within a context that is characterized by a strong mythologized belief in the German qualified statutory auditor and professional self-regulation. By analysing archival documents and interviews with key actors, we investigate through the lens of institutional work how initially the audit establishment maintained the existing self-regulatory logic despite, and because of, the implementation of formal independent oversight structures. We illustrate how the institutional work of small auditors aimed at disrupting the large audit firms’ field dominance unintentionally undermined the mythologized self-regulation. In doing so, we offer insights into how institutional myth is both constructed and dismantled. Our focus on multiple actors allows us to shed light on how parallel institutional work of distinct actors can lead to mutually effective and unintended institutional consequences. We argue that a successful institutional worker executes a combination of two basic types of work, which we refer to as existential and instrumental modes of work. Finally, comparing our findings with literature on audit oversight in other countries allows us to conceptualize audit oversight along a political-operational dimension and a public-private dimension. [less ▲]Detailed reference viewed: 58 (5 UL) Gesundheitsverhalten von Arbeitnehmern in LuxemburgSischka, Philipp ; Steffgen, Georges E-print/Working paper (2017)Insbesonders unter den jüngeren Arbeitnehmern und unter den Arbeitnehmern mit geringer Bildung ist der Anteil der Raucher vergleichsweise hoch. Männliche und ältere Arbeitnehmer weisen wieder einen ... [more ▼]Insbesonders unter den jüngeren Arbeitnehmern und unter den Arbeitnehmern mit geringer Bildung ist der Anteil der Raucher vergleichsweise hoch. Männliche und ältere Arbeitnehmer weisen wieder einen vergleichsweise hohen Alkoholkonsum auf. Differenziert nach Berufsgruppen zeigen vor allem Arbeitnehmer in Handwerksberufen sowie Manager und Führungskräfte einen hohen Alkoholkonsum. Die Arbeitnehmer in der jüngsten Altersgruppe (16 bis 24 Jährige) schlafen durchschnittlich etwas länger, im Vergleich zu den älteren Arbeitnehmern. Außerdem ist die Sporthäufigkeit in der jüngsten Altersgruppe am höchsten. Männliche Arbeitnehmer sowie Arbeitnehmer ohne Partner oder ohne Kinder treiben ebenfalls überduchschnittlich häufig Sport. Etwa 17% der Arbeitnehmer leidet unter Adipositas. Knapp 30% der Arbeitnehmer leidet manchmal oder häufiger an gesundheitlichen Problemen. Unter den gesundheitlichen Problemen sind Rückenprobleme besonders häufig, gefolgt von Schlafschwierigkeiten und Kopfschmerzen. Herzprobleme sind dagegen eher selten ausgeprägt. Arbeitnehmer mit Hochschulabschluss sowie Manager und Führungskräfte sind seltener von Gesundheitsproblemen betroffen. Gesundheitliche Probleme sind insgesamt mit Zigarettenkonsum, Schlafstunden pro Tag, Sporthäufigkeit und Body Mass Index assoziiert: Je weniger geraucht wird, je mehr geschlafen und Sport getrieben wird und je geringer das körperliche Gewicht der Arbeitnehmer, desto weniger Gesundheitsprobleme liegen tendenziell vor. [less ▲]Detailed reference viewed: 84 (6 UL) The economic programme of Emmanuel MacronChiocchetti, Paolo E-print/Working paper (2017)The outsider Emmanuel Macron is the winner of the first round of the French presidential election. His economic programme is betting on a strategy of fiscal consolidation, tax cuts, targeted investments ... [more ▼]The outsider Emmanuel Macron is the winner of the first round of the French presidential election. His economic programme is betting on a strategy of fiscal consolidation, tax cuts, targeted investments, and further Europeanisation. Success crucially hinges on the outcome of the June legislative elections and on a favourable evolution of the global economic environment. [less ▲]Detailed reference viewed: 45 (0 UL) Scaling evidence of the homothetic nature of citiesLemoy, Rémi ; Caruso, Geoffrey E-print/Working paper (2017)In this paper we analyse the profile of land use and population density with respect to the distance to the city centre for the European city. In addition to providing the radial population density and ... [more ▼]In this paper we analyse the profile of land use and population density with respect to the distance to the city centre for the European city. In addition to providing the radial population density and soil-sealing profiles for a large set of cities, we demonstrate a remarkable constancy of the profiles across city size. Our analysis combines the GMES/Copernicus Urban Atlas 2006 land use database at 5m resolu- tion for 300 European cities with more than 100.000 inhabitants and the Geostat population grid at 1km resolution. Population is allocated proportionally to surface and weighted by soil sealing and density classes of the Urban Atlas. We analyse the profile of each artificial land use and population with distance to the town hall. In line with earlier literature, we confirm the strong monocentricity of the European city and the negative exponential curve for population density. Moreover, we find that land use curves, in particular the share of housing and roads, scale along the two horizontal dimensions with the square root of city population, while population curves scale in three dimensions with the cubic root of city population. In short, European cities of different sizes are homothetic in terms of land use and population density. While earlier literature documented the scaling of average densities (total surface and population) with city size, we document the scaling of the whole radial distance profile with city size, thus liaising intra-urban radial analysis and systems of cities. In addition to providing a new empirical view of the European city, our scaling offers a set of practical and coherent definitions of a city, independent of its population, from which we can re-question urban scaling laws and Zipf’s law for cities. [less ▲]Detailed reference viewed: 96 (6 UL) Benelux, Europe and the Cold War, the power of non-powersParavantis, Spero E-print/Working paper (2017)The conference “Benelux, Europe and the Cold War, the power of non-powers”, which took place on 30 and 31 March 2017 at the University of Luxembourg, was the first of three events planned in the FNR ... [more ▼]The conference “Benelux, Europe and the Cold War, the power of non-powers”, which took place on 30 and 31 March 2017 at the University of Luxembourg, was the first of three events planned in the FNR-funded CORE junior project “Benelux”, as part of its public outreach and academic output objectives. The conference sought to highlight asymmetrical power relations in the Cold War period of European integration by examining European security. What was/is European security in the context of the Cold War? How was and is it conceived? What role did “non-powers” play in European security, and how did they help define it? This conference investigated these and other related questions by re-examining the US/European relationship in the early Cold War and the role that developments during this period played in the European integration movement. In so doing, the conference also showcased findings which helped unify historiographies of the Cold War and European integration. [less ▲]Detailed reference viewed: 71 (13 UL) Universal Reasoning, Rational Argumentation and Human-Machine InteractionBenzmüller, Christoph E-print/Working paper (2017)Classical higher-order logic, when utilized as a meta-logic in which various other (classical and non-classical) logics can be shallowly embedded, is well suited for realising a universal logic reasoning ... [more ▼]Classical higher-order logic, when utilized as a meta-logic in which various other (classical and non-classical) logics can be shallowly embedded, is well suited for realising a universal logic reasoning approach. Universal logic reasoning in turn, as envisioned already by Leibniz, may support the rigorous formalisation and deep logical analysis of rational arguments within machines. A respective universal logic reasoning framework is described and a range of exemplary applications are discussed. In the future, universal logic reasoning in combination with appropriate, controlled forms of rational argumentation may serve as a communication layer between humans and intelligent machines. [less ▲]Detailed reference viewed: 38 (3 UL) What makes Data Science different? A discussion involving Statistics2.0 and Computational SciencesLey, Christophe; Bordas, Stéphane E-print/Working paper (2017)Data Science is today one of the main buzzwords be it in business, industrial or academic settings. Machine learning, experimental design, data-driven modelling are all, undoubtedly, rising disciplines if ... [more ▼]Data Science is today one of the main buzzwords be it in business, industrial or academic settings. Machine learning, experimental design, data-driven modelling are all, undoubtedly, rising disciplines if one goes by the soaring number of research papers and patents appearing each year. The prospect of becoming a Data Scientist'' appeals to many. A discussion panel organised as part of the European Data Science Conference (European Association for Data Science (EuADS)) asked the question: `What makes Data Science different?'' In this paper we give our own, personal and multi-facetted view on this question, from an engineering and a statistics perspective. In particular, we compare Data Science to Statistics and discuss the connection between Data Science and Computational Science. [less ▲]Detailed reference viewed: 734 (35 UL) Population ageing [glossary]Chiocchetti, Paolo E-print/Working paper (2017)Population ageing is a major trend in contemporary European societies. A consequence of welcome shifts in life expectancy and fertility, it nevertheless entails important challenges for the adequacy ... [more ▼]Population ageing is a major trend in contemporary European societies. A consequence of welcome shifts in life expectancy and fertility, it nevertheless entails important challenges for the adequacy, sustainability, and competitiveness of social and economic systems. [less ▲]Detailed reference viewed: 25 (2 UL) Tempered subanalytic topology on algebraic varietiesPetit, François E-print/Working paper (2017)On a smooth complex algebraic variety, we build the tempered subanalytic and Stein tempered subanalytic sites. We construct the sheaf of holomorphic functions tempered at infinity over these sites and ... [more ▼]On a smooth complex algebraic variety, we build the tempered subanalytic and Stein tempered subanalytic sites. We construct the sheaf of holomorphic functions tempered at infinity over these sites and study their relations with the sheaf of regular functions, proving in particular that these sheaves are isomorphic on Zariski open subsets. We show that these data allow to define the functors of tempered and Stein tempered analytifications. We study the relations between these two functors and the usual analytification functor. We also obtain algebraization results in the non-proper case and flatness results. [less ▲]Detailed reference viewed: 31 (2 UL) The maximum number of systoles for genus two Riemann surfaces with abelian differentialsJudge, Chris; Parlier, Hugo E-print/Working paper (2017)This article explores the length and number of systoles associated to holomorphic $1$-forms on surfaces. In particular, we show that up to homotopy, there are at most $10$ systolic loops on such a genus ... [more ▼]This article explores the length and number of systoles associated to holomorphic $1$-forms on surfaces. In particular, we show that up to homotopy, there are at most $10$ systolic loops on such a genus two surface and that the bound is realized by a unique translation surface up to homothety. We also provide sharp upper bounds on the the number of homotopy classes of systoles for a holomorphic $1$-form with a single zero in terms of the genus. [less ▲]Detailed reference viewed: 98 (7 UL) Migration, Labor Tasks and Production Structure in EuropeJoxhe, Majlinda ; Borelli, Stefania; Giuseppe, De ArcangelisE-print/Working paper (2017)This paper assesses the effect of the immigration on the production structure in a selection of European countries in 2001-2009 with a task-based approach. The inflow of immigrants represents an increase ... [more ▼]This paper assesses the effect of the immigration on the production structure in a selection of European countries in 2001-2009 with a task-based approach. The inflow of immigrants represents an increase in the relative supply of manual-physical (or simple) tasks, hence favoring simple-task intensive sectors. We use a new OECD dataset, PIAAC, to calculate the index of simple-task intensity at the country-industry level. The analysis confirms that the increase in migration stocks caused a positive impact on the value added of sectors that use more intensively simple tasks. These effects are more intense when considering countries as Italy and Spain characterized by a recent, rapid and intense inflow of migrants. Endogeneity issues are discussed and instruments based on a gravity approach are used in estimation. [less ▲]Detailed reference viewed: 62 (7 UL) Images of Galois representations in mod p Hecke algebrasAmoros Carafi, Laia E-print/Working paper (2017)Detailed reference viewed: 35 (2 UL) C’était extrêmement violent» Il y a 100 ans, la révolution de Février a provoqué la fin de l’Empire russeParavantis, Spero 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) Wohlbefinden von Arbeitnehmern in LuxemburgSischka, Philipp ; Steffgen, Georges E-print/Working paper (2017)Vergleicht man die Teilnehmer der Quality of Work Index Luxembourg Umfrage mit anderen europäischen Arbeitnehmern, zeigen die Teilnehmer aus Luxemburg im Durchschnitt ein geringeres Wohlbefinden ... [more ▼]Vergleicht man die Teilnehmer der Quality of Work Index Luxembourg Umfrage mit anderen europäischen Arbeitnehmern, zeigen die Teilnehmer aus Luxemburg im Durchschnitt ein geringeres Wohlbefinden. Insbesondere jüngere Arbeitnehmer weisen ein tendenziell geringeres Wohlbefinden auf. Differenziert man die Arbeitnehmer nach Berufsgruppen, zeigen Manager und Führungskräfte, Arbeitnehmer in Dienstleistungsberufen sowie Hilfsarbeitskräfte das höchste Wohlbefinden. Arbeitnehmer mit geringeren faktischen Wochenstundenzahlen sowie Arbeitnehmer, die in kleinen Betrieben (1-4 Beschäftigte) arbeiten, berichten über ein höheres Wohlbefinden. Das Wohlbefinden ist hierbei nachweislich mit unterschiedlichen Arbeitsbedingungen assoziiert. So weisen Arbeitnehmer, je höher ihre Partizipation, ihre Rollenklarheit bei der Arbeit sowie ihre Arbeitsplatzsicherheit ist umso ein höheres Wohlbefinden auf. Das Wohlbefinden ist außerdem positiv mit Arbeitszufriedenheit, wahrgenommenem Respekt bei der Arbeit und negativ mit Stress und Burnout korreliert. [less ▲]Detailed reference viewed: 95 (17 UL) How did the ECB become a fully-fledged central bank of the eurozone?Gren, Jakub E-print/Working paper (2017)Detailed reference viewed: 96 (6 UL) Real-time Error Control for Surgical SimulationBui, Huu Phuoc ; Tomar, Satyendra ; Bordas, Stéphane E-print/Working paper (2017)Real-time simulations are becoming increasingly common for various applications, from geometric design to medical simulation. Two of the main factors concurrently involved in defining the accuracy of ... [more ▼]Real-time simulations are becoming increasingly common for various applications, from geometric design to medical simulation. Two of the main factors concurrently involved in defining the accuracy of surgical simulations are: the modeling error and the discretization error. Most work in the area has been looking at the above sources of error as a compounded, lumped, overall error. Little or no work has been done to discriminate between modeling error (e.g. needle-tissue interaction, choice of constitutive models) and discretization error (use of approximation methods like FEM). However, it is impossible to validate the complete surgical simulation approach and, more importantly, to understand the sources of error, without evaluating both the discretization error and the modeling error. Our objective is thus to devise a robust and fast approach to measure the discretization error via a posteriori error estimates, which are then used for local remeshing in surgical simulations. To ensure that the approach can be used in clinical practice, the method should be robust enough to deal, as realistically as possible, with the interaction of surgical tools with the organ, and fast enough for real-time simulations. The approach should also lead to an improved convergence so that an economical mesh is obtained at each time step. The final goal is to achieve optimal convergence and the most economical mesh, which will be studied in our future work. [less ▲]Detailed reference viewed: 401 (26 UL) Evaluating How Child Allowances and Daycare Subsidies Affect FertilityGoldstein, Joshua R.; Koulovatianos, Christos ; Li, Jian et alE-print/Working paper (2017)We compare the cost effectiveness of two pronatalist policies: (a) child allowances; and (b) daycare subsidies. We pay special attention to estimating how intended fertility (fertility before children are ... [more ▼]We compare the cost effectiveness of two pronatalist policies: (a) child allowances; and (b) daycare subsidies. We pay special attention to estimating how intended fertility (fertility before children are born) responds to these policies. We use two evaluation tools: (i) a dynamic model on fertility, labor supply, outsourced childcare time, parental time, asset accumulation and consumption; and (ii) randomized vignette-survey policy experiments. We implement both tools in the United States and Germany, finding consistent evidence that daycare subsidies are more cost effective. Nevertheless, the required public expenditure to increase fertility to the replacement level might be viewed as prohibitively high. [less ▲]Detailed reference viewed: 73 (5 UL) Populism [glossary]Chiocchetti, Paolo E-print/Working paper (2017)A chameleonic concept, populism can be defined as an ideology, a communication style, a political strategy, or a misguided category. Its key elements are a positive appreciation of people, a negative view ... [more ▼]A chameleonic concept, populism can be defined as an ideology, a communication style, a political strategy, or a misguided category. Its key elements are a positive appreciation of people, a negative view of the elite, and the exaltation of untrammeled popular sovereignty against representative democracy and liberal constitutionalism. The fortune of the term, despite its theoretical and practical drawbacks, is the reflection of intrinsic antinomies of modern democracy and of a growing popular dissatisfaction toward the performance of representative governments and institutions. [less ▲]Detailed reference viewed: 32 (0 UL) Analysis of the NORX Core PermutationBiryukov, Alex ; Udovenko, Aleksei ; Velichkov, Vesselin E-print/Working paper (2017)NORX is one of the fifteen authenticated encryption algorithms that have reached the third round of the CAESAR competition. NORX is built using the sponge-based Monkey Duplex construction. In this note we ... [more ▼]NORX is one of the fifteen authenticated encryption algorithms that have reached the third round of the CAESAR competition. NORX is built using the sponge-based Monkey Duplex construction. In this note we analyze the core permutation F. We show that it has rotational symmetries on different structure levels. This yields simple distinguishing properties for the permutation, which propagate with very high probability or even probability one. We also investigate differential symmetries in NORX at the word level. A new type of truncated differentials called symmetric truncated differentials (STD) is proposed. It is shown that, under the Markov assumption, up to 2.125 rounds of the F function of NORX32 and NORX64 can be distinguished using STD. Finally, we note that our analysis covers only the permutation F and does not immediately threaten the security claims of the designers. [less ▲]Detailed reference viewed: 28 (0 UL) Institutional Determinants of Early Job Insecurity in Nine European Countries: Country Report SwitzerlandImdorf, Christian; Shi, Lulu P.; Helbling, Laura et alE-print/Working paper (2017)An overview of institutional determinants of early job insecurity in Switzerland.Detailed reference viewed: 36 (5 UL) Chromatic numbers for the hyperbolic plane and discrete analogsParlier, Hugo ; Petit, CamilleE-print/Working paper (2017)We study colorings of the hyperbolic plane, analogously to the Hadwiger-Nelson problem for the Euclidean plane. The idea is to color points using the minimum number of colors such that no two points at ... [more ▼]We study colorings of the hyperbolic plane, analogously to the Hadwiger-Nelson problem for the Euclidean plane. The idea is to color points using the minimum number of colors such that no two points at distance exactly $d$ are of the same color. The problem depends on $d$ and, following a strategy of Kloeckner, we show linear upper bounds on the necessary number of colors. In parallel, we study the same problem on $q$-regular trees and show analogous results. For both settings, we also consider a variant which consists in replacing $d$ with an interval of distances. [less ▲]Detailed reference viewed: 38 (5 UL) Wealth accumulation over the life course. The role of disadvantages across the employment historyPonomarenko, Valentina E-print/Working paper (2017)In this study wealth is employed as an often neglected but highly stratified well-being measure in sociology. I relate the employment history and especially the accumulating disadvantages like ... [more ▼]In this study wealth is employed as an often neglected but highly stratified well-being measure in sociology. I relate the employment history and especially the accumulating disadvantages like nonemployment and lower occupations to wealth in old age. In particular, I am interested in determining whether an adverse employment history prevents wealth accumulation and which factors influence wealth accumulation across the life course. I use comparative data from the Survey of Health, Ageing and Retirement and combine it with the retrospective panel SHARELIFE to retrieve information about the complete employment history. The relevance of wealth varies significantly across households and in the wider national context. Hence, a contextual perspective is included to account for the difference in wealth rates and wealth inequality in the European countries. The results show that cumulative nonemployment and employment in lower occupations has significant disadvantages for wealth accumulation in old age. However, large differences for men and women persist. Particularly, the household composition and household factors are decisive in the effectuality of these disadvantages. The relation of life course employment and especially disadvantages to accumulated wealth in old aged is stronger in conservative countries than in other welfare regimes. [less ▲]Detailed reference viewed: 328 (7 UL) Quantum moment maps and retracts for bounded symmetric domainsKorvers, Stéphane E-print/Working paper (2017)Detailed reference viewed: 36 (3 UL) The Turkish State of Emergency Under Turkish Constitutional Law and International Human Rights LawBaglayan, Basak E-print/Working paper (2017)Detailed reference viewed: 105 (3 UL) Multiplicative order and Frobenius symbol for the reductions of number fieldsPerucca, Antonella E-print/Working paper (2017)Detailed reference viewed: 77 (5 UL) Is gender in the eye of the beholder? Identifying cultural attitudes with art auction pricesKräussl, Roman ; Adams, Renée; Navone, Marco et alE-print/Working paper (2017)Detailed reference viewed: 169 (3 UL) Identifying individual rights in EU lawHofmann, Herwig ; Warin, Catherine E-print/Working paper (2017)Detailed reference viewed: 201 (10 UL) Multi-oriented props and homotopy algebras with branesMerkulov, Sergei E-print/Working paper (2017)We introduce a new category of differential graded {\em multi-oriented}\, props whose representations (called homotopy algebras with branes) in a graded vector space require a choice of a collection of $k ... [more ▼]We introduce a new category of differential graded {\em multi-oriented}\, props whose representations (called homotopy algebras with branes) in a graded vector space require a choice of a collection of$k$linear subspaces in that space,$k$being the number of extra directions (if$k=0$this structure recovers an ordinary prop); symplectic vector spaces equipped with$k$Lagrangian subspaces play a distinguished role in this theory. Manin triples is a classical example of an algebraic structure (concretely, a Lie bialgebra structure) given in terms of a vector space and its subspace; in the context of this paper Manin triples are precisely symplectic Lagrangian representations of the {\em 2-oriented} generalization of the classical operad of Lie algebras. In a sense, the theory of multi-oriented props provides us with a far reaching strong homotopy generalization of Manin triples type constructions. [less ▲]Detailed reference viewed: 92 (9 UL) Hochbegabte: eine besondere Minderheit?Baudson, Tanja Gabriele E-print/Working paper (2017)Detailed reference viewed: 78 (1 UL) March for Science – auf die Straße für freie Wissenschaft und Demokratie!Baudson, Tanja Gabriele E-print/Working paper (2017)Detailed reference viewed: 23 (0 UL) Räumliche Identifikationen und Identifizierungen in Grenzregionen. Das Beispiel der Großregion SaarLorLuxWille, Christian E-print/Working paper (2017)In diesem Beitrag wird die Bedeutung von nationalen Grenzen für räumliche Identitäten in Grenzregionen analysiert. Dafür wird ein mehrdimensionales Analysemodell entwickelt und am Beispiel der Großregion ... [more ▼]In diesem Beitrag wird die Bedeutung von nationalen Grenzen für räumliche Identitäten in Grenzregionen analysiert. Dafür wird ein mehrdimensionales Analysemodell entwickelt und am Beispiel der Großregion SaarLorLux gefragt, wie die Einwohner den Raum repräsentieren und wie sie ihre alltagskulturellen Praktiken räumlich organisieren. Außerdem werden räumliche Projektionen im politischen Diskurs aufgedeckt und rekonstruiert, inwiefern diese eine Grundlage bilden für Identifizierungsprozesse. Der Beitrag zeigt, dass nationale Grenzen in den Identifikations- und Identifizierungsvorgängen der Einwohner der Großregion SaarLorLux trotz grenzüberschreitender Verflechtungen eine wichtige Rolle spielen, aber nicht zwangsläufig als starre Ordnungskategorien. [less ▲]Detailed reference viewed: 318 (32 UL) The Missing Risk Premium in Exchange RatesPenasse, Julien ; Magnus, DahlquistE-print/Working paper (2017)Detailed reference viewed: 91 (0 UL) The Vanishing of Low-Dimensional Cohomology Groups of the Witt and the Virasoro algebraEcker, Jill Marie-Anne ; Schlichenmaier, Martin E-print/Working paper (2017)A proof of the vanishing of the first and the third cohomology groups of the Witt algebra with values in the adjoint module is given. The proofs given in the present article are completely algebraic and ... [more ▼]A proof of the vanishing of the first and the third cohomology groups of the Witt algebra with values in the adjoint module is given. The proofs given in the present article are completely algebraic and independent of any underlying topology. They are a generalization of the ones provided by Schlichenmaier, who proved the vanishing of the second cohomology group using purely algebraic methods. In the case of the third cohomology group though, extra difficulties arise and the involved proofs are distinctly more complicated. [less ▲]Detailed reference viewed: 108 (15 UL) Explaining employers’ hiring decisions: A comparative study of employers’ risk assessmentImdorf, Christian; Shi, Lulu P.; Sacchi, Stefan et alE-print/Working paper (2017)In order to investigate the scarring effect of early job insecurity on future employment chances we have implemented a factorial survey experiment with recruiters based on real vacancies in Bulgaria ... [more ▼]In order to investigate the scarring effect of early job insecurity on future employment chances we have implemented a factorial survey experiment with recruiters based on real vacancies in Bulgaria, Greece, Norway and Switzerland. We contribute to recruitment research at least in three ways: First, the multinational design allows us to run comparative analysis across countries, which are carried out along the national dimensions youth unemployment rate, employment protection regulation and type of educational system. Second, we differentiate between two different forms of early job insecurity – unemployment and work experience in deskilling jobs, and we demonstrate that the sole focus on unemployment, as it is the case in the prevalent labour market research, is not sufficient in order to fully understand labour market outcomes caused by different forms of job insecurities. Third, since our sample consists of real recruiters who were hiring for current jobs at the time when the study was carried out, we provide a unique cross-country data set of high external validity. Our findings suggest that scarring effects of early job insecurity vary across countries and across occupational fields, and while scarring caused by work experience in deskilling jobs seems to be enforced by strong employment protection regulations, unemployment scarring seems to stronger where national unemployment is low. Further, the differences in recruiter’s evaluation across occupational fields indicate that signalling value of education may vary depending on specific sectors. Not at least, we contribute to debates around active labour market policies, arguing that measures aiming at quick labour market reintegration without consideration of job quality may not be the most sustainable solution, as work experience in a deskilling job does not lead to better recruiter’s evaluation. [less ▲]Detailed reference viewed: 113 (5 UL) Hochbegabt ist, wer der Menschheit nützt.Baudson, Tanja Gabriele E-print/Working paper (2017)Detailed reference viewed: 50 (1 UL) Was beforschen Intelligenzforscher?Baudson, Tanja Gabriele E-print/Working paper (2017)Detailed reference viewed: 31 (0 UL) Generalized Ricci flow II: Existence for complete noncompact manifoldsLi, Yi E-print/Working paper (2017)Detailed reference viewed: 216 (18 UL) Urban InteractionsPicard, Pierre M ; Jun Sung, Kim; Patacchini, Eleonora et alE-print/Working paper (2017)This paper studies social-tie formation when individuals care about the geographical location of other individuals. In our model, the intensity of social interactions can be chosen at the same time as ... [more ▼]This paper studies social-tie formation when individuals care about the geographical location of other individuals. In our model, the intensity of social interactions can be chosen at the same time as friends. We characterize the equilibrium in terms of both social interactions and social capital (the value of social interactions offered by each agent) for a general distribution of individuals in the urban geographical space. We show that greater geographical dispersion decreases the incentives to socially interact. We also show that the equilibrium frequency of interactions is lower than the effcient one. Using a unique geo-coded dataset of friendship networks among adolescents in the United States, we estimate the model and validate that agents interact less than the social first best optimum. Our policy analysis suggests that, given the same cost, subsidizing social interactions yields a higher total welfare than subsidizing transportation costs. [less ▲]Detailed reference viewed: 18 (0 UL) Deformations of pre-symplectic structures and the Koszul L-infty-algebraSchätz, Florian ; Zambon, MarcoE-print/Working paper (2017)We study the deformation theory of pre-symplectic structures, i.e. closed two-forms of fixed rank. The main result is a parametrization of nearby deformations of a given pre-symplectic structure in terms ... [more ▼]We study the deformation theory of pre-symplectic structures, i.e. closed two-forms of fixed rank. The main result is a parametrization of nearby deformations of a given pre-symplectic structure in terms of an$L_\infty$-algebra, which we call the Koszul$L_\infty$-algebra. This$L_\infty$-algebra is a cousin of the Koszul dg Lie algebra associated to a Poisson manifold, and its proper geometric understanding relies on Dirac geometry. In addition, we show that a quotient of the Koszul$L_{\infty}$-algebra is isomorphic to the$L_\infty$-algebra which controls the deformations of the underlying characteristic foliation. Finally, we show that the infinitesimal deformations of pre-symplectic structures and of foliations are both obstructed. [less ▲]Detailed reference viewed: 27 (0 UL) Diffusion approximations via Stein's method and time changesKasprzak, Mikolaj E-print/Working paper (2017)Detailed reference viewed: 23 (1 UL) #Soapboxscience – Hochbegabung kommunizieren.Baudson, Tanja Gabriele E-print/Working paper (2017)Detailed reference viewed: 35 (0 UL) Eulerian idempotent, pre-Lie logarithm and combinatorics of treesBandiera, Ruggero; Schätz, Florian E-print/Working paper (2017)The aim of this paper is to bring together the three objects in the title. Recall that, given a Lie algebra g, the Eulerian idempotent is a canonical projection from the enveloping algebra U(g) to g. The ... [more ▼]The aim of this paper is to bring together the three objects in the title. Recall that, given a Lie algebra g, the Eulerian idempotent is a canonical projection from the enveloping algebra U(g) to g. The Baker-Campbell-Hausdorff product and the Magnus expansion can both be expressed in terms of the Eulerian idempotent, which makes it interesting to establish explicit formulas for the latter. We show how to reduce the computation of the Eulerian idempotent to the computation of a logarithm in a certain pre-Lie algebra of planar, binary, rooted trees. The problem of finding formulas for the pre-Lie logarithm, which is interesting in its own right – being related to operad theory, numerical analysis and renormalization – is addressed using techniques inspired by umbral calculus. As a consequence of our analysis, we find formulas both for the Eulerian idempotent and the pre-Lie logarithm in terms of the combinatorics of trees. [less ▲]Detailed reference viewed: 31 (0 UL) On the Naturalness of MutantsJimenez, Matthieu ; Cordy, Maxime ; Kintis, Marinos et alE-print/Working paper (2017)Detailed reference viewed: 113 (12 UL) Politische, soziale und rechtliche Systeme und der "westkulturelle Pluralismus"Marthaler, Thomas ; Haas, Claude E-print/Working paper (2017)Detailed reference viewed: 105 (17 UL) Urban Structures with Forward and Backward LinkagesPicard, Pierre M ; Mossay, Pascal; Tabuchi, TakatoshiE-print/Working paper (2017)We study urban structures driven by demand and vertical linkages in the presence of increasing returns to scale. Individuals consume local urban varieties and firms use these varieties to produce a ... [more ▼]We study urban structures driven by demand and vertical linkages in the presence of increasing returns to scale. Individuals consume local urban varieties and firms use these varieties to produce a national good. We prove the existence of a spatial equilibrium and obtain an invariance result according to which more intense demand or vertical linkages have the same effect on the urban structure as lower commuting costs. Various urban configurations can emerge exhibiting a monocentric, an integrated, a duocentric, or a partially integrated city structure. We discuss the role of commuting and transport costs, intensities of demand and vertical linkages, and urbanization in affecting these patterns. We show that multiple equilibria may arise in equilibrium involving the monocentric city and up to a couple of duocentric and partially integrated structures. [less ▲]Detailed reference viewed: 41 (0 UL) The role of citizens in the politics of insecurity: Malta and Sub-Saharan migrantsLemaire, Léa E-print/Working paper (2017)Detailed reference viewed: 28 (3 UL) Technological progress, the supply of hours worked, and the consumption-leisure complementarityIrmen, Andreas E-print/Working paper (2017)At least since 1870 hours worked per worker declined and real wages increased in many of today’s industrialized countries. The dual nature of technological progress in conjunction with a consumption ... [more ▼]At least since 1870 hours worked per worker declined and real wages increased in many of today’s industrialized countries. The dual nature of technological progress in conjunction with a consumption-leisure complementarity explains these stylized facts. Technological progress drives real wages up and expands the amount of available con- sumption goods. Enjoying consumption goods increases the value of leisure. Therefore, individuals demand more leisure and supply less labor. This mechanism appears in an OLG-model with two-period lived individuals equipped with per-period utility func- tions of the generalized log-log type proposed by Boppart-Krusell (2016). The optimal plan is piecewise defined and hinges on the wage level. Technological progress moves a poor economy out of a regime with low wages and an inelastic supply of hours worked into a regime where wages increase further and hours worked continuously decline. [less ▲]Detailed reference viewed: 64 (9 UL) Bounds for the mod 2 cohomology of GL_2(Z[sqrt(-2)][1/2])Bui, Anh Tuan; Rahm, Alexander E-print/Working paper (2017)Detailed reference viewed: 36 (0 UL) Zygosity Determination in Twin Studies: A Validation of Zygosity Questionnaires Using DNA in the German TwinLife Study.Lenau, F.; Hahn, E.; Peters, A.-L. et alE-print/Working paper (2017)Detailed reference viewed: 22 (1 UL) Stein's Overreaction Puzzle: A NoteLin, Yuehao; Lehnert, Thorsten E-print/Working paper (2017)Detailed reference viewed: 33 (1 UL) Documentation TwinLife Data: Cognitive Abilities.Gottschling, Juliana E-print/Working paper (2017)Detailed reference viewed: 20 (1 UL) A Decoder for a Symbol-Constrained Code (preliminary version)Franck, Christian E-print/Working paper (2017)Detailed reference viewed: 91 (13 UL) Multilingualism as Migration. Remarks on Literature, Philology, and CultureDembeck, Till E-print/Working paper (2017)Detailed reference viewed: 29 (1 UL) A Peccati-Tudor type theorem for Rademacher chaosesZheng, Guangqu E-print/Working paper (2017)In this article, we prove that in the Rademacher setting, a random vector with chaotic components is close in distribution to a centred Gaussian vector, if both the maximal influence of the associated ... [more ▼]In this article, we prove that in the Rademacher setting, a random vector with chaotic components is close in distribution to a centred Gaussian vector, if both the maximal influence of the associated kernel and the fourth cumulant of each component is small. In particular, we recover the univariate case recently established in D\"obler and Krokowski (2017). Our main strategy consists in a novel adaption of the exchangeable pairs couplings initiated in Nourdin and Zheng (2017), as well as its combination with estimates via chaos decomposition. [less ▲]Detailed reference viewed: 71 (8 UL) Liberté de circulation des personnes : citoyenneté de mouvement, citoyenneté en mouvementWarin, Catherine E-print/Working paper (2017)Detailed reference viewed: 28 (3 UL) Defense semantics of argumentation: encoding reasons for accepting argumentsLiao, Beishui ; van der Torre, Leon E-print/Working paper (2017)In this paper we show how the defense relation among abstract arguments can be used to encode the reasons for accepting arguments. After introducing a novel notion of defenses and defense graphs, we ... [more ▼]In this paper we show how the defense relation among abstract arguments can be used to encode the reasons for accepting arguments. After introducing a novel notion of defenses and defense graphs, we propose a defense semantics together with a new notion of defense equivalence of argument graphs, and compare defense equivalence with standard equivalence and strong equivalence, respectively. Then, based on defense semantics, we define two kinds of reasons for accepting arguments, i.e., direct reasons and root reasons, and a notion of root equivalence of argument graphs. Finally, we show how the notion of root equivalence can be used in argumentation summarization. [less ▲]Detailed reference viewed: 54 (18 UL) Premiers pas dans le métier d'enseignant: quand la langue s'en mêlede Saint-Georges, Ingrid E-print/Working paper (2017)Detailed reference viewed: 80 (2 UL) To MigrateWith orWithout Ones’ Children in China - That is the QuestionChen, Yiwen ; Fromentin, Vincent; Salagean, Ioana et alE-print/Working paper (2017)Where should Chinese internal migrant parents locate their school-aged children: migrate with them or leave them behind? And should they invest in private education of their children? Empirical evidence ... [more ▼]Where should Chinese internal migrant parents locate their school-aged children: migrate with them or leave them behind? And should they invest in private education of their children? Empirical evidence based on the 2009 wave of the Rural-Urban Migration Survey in China (RUMiC) data is inconclusive. We use an overlapping generations model to find a theoretical optimum that maximizes parents’ utility which includes the children’s educational performance. Depending on the educational investment parents make and the relocation cost of children, we provide necessary and sufficient conditions for migrant parents to take their children to migrate and whether they should provide their children with private education. As the choices of migrant parents affect not only their children’s human capital accumulation, but also on the economic potential of their descendants, we present both short- and long-term consequences of the parents decision. [less ▲]Detailed reference viewed: 104 (8 UL) La représentation de la littérature de la Lorraine dans l'espace - utilisation d'un système d'information géographique via InternetHelfer, Malte E-print/Working paper (2017)Detailed reference viewed: 47 (4 UL) Asymptotic distribution of nodal intersections for arithmetic random wavesRossi, Maurizia ; Wigman, IgorE-print/Working paper (2017)Detailed reference viewed: 89 (0 UL) Homotopical algebraic context over differential operatorsDi Brino, Gennaro; Pistalo, Damjan ; Poncin, Norbert E-print/Working paper (2017)Detailed reference viewed: 258 (58 UL) Online deliberation: state of the artKies, Raphaël E-print/Working paper (2017)In the last decade, the issue of online deliberation (or web-deliberation) has gained an important visibility among the scholars in the domain of political science, political philosophy, political ... [more ▼]In the last decade, the issue of online deliberation (or web-deliberation) has gained an important visibility among the scholars in the domain of political science, political philosophy, political communication as well as software designers. It corresponds not only to a topic of analysis – that can be broadly defined as the quantitative and qualitative assessment of the political and public debates online - but also to a democratic model of e-democracy, that aims to shape the different political usage of the web according to the deliberative values. A pertinent way to analyze this broad phenomenon is to subdivide its analysis in three sections which content is partly based on updated findings of my book Promises and Limits of web-deliberation. The first section refers to the deliberative theory on which the empirical research is based. The second section deals with the complex issue of operationalizing the deliberative theory. The last section provides an overview of the online deliberative empirical studies that were conducted this last decade by distinguishing three broad research fields: i) The studies that aim at measuring the usage of the political web-debates and the characteristics of the users; ii) The studies that identify and compare the social and political actors that offer possibilities of online debates; iii) The studies assessing the quality of deliberation in different discursive online settings and the ones aiming at defining the factors that could explain variations in web-deliberation. [less ▲]Detailed reference viewed: 209 (8 UL) Harnack estimates for nonlinear parabolic equations under the Ricci flowLi, Yi ; Zhu, XiaoruiE-print/Working paper (2017)In this paper, we consider first the Li-Yau Harnack estimates for a nonlinear parabolic equation$\partial_{t}u=\Delta_{t}u-qu -au(\ln u)^{\alpha}$under the Ricci flow, where$\alpha>0$is a constant. To ... [more ▼]In this paper, we consider first the Li-Yau Harnack estimates for a nonlinear parabolic equation$\partial_{t}u=\Delta_{t}u-qu -au(\ln u)^{\alpha}$under the Ricci flow, where$\alpha>0$is a constant. To extend these estimates to a more general situation, in the second part, we consider the gradient estimates for a positive solution of the nonlinear parabolic equation$\partial _{t}u=\Delta _{t}u+hu^{p}$on a Riemannian manifold whose metrics evolve under the geometric flow$\partial _{t}g(t)=-2S_{g(t)}$. To obtain these estimates, we introduce a quantity$\underline{\boldsymbol{S}}$along the flow which measures whether the tensor$S_{ij}$satisfies the second contracted Bianchi identity. Under conditions on${\rm Ric}_{g(t)}, S_{g(t)}$, and$\underline{\boldsymbol{S}}\$, we obtain the gradient estimates. [less ▲]Detailed reference viewed: 53 (4 UL) Times of Crisis, Times of Prospects: Can the EU Learn from the 1970s?Herzog, Mechthild E-print/Working paper (2017)Detailed reference viewed: 23 (0 UL) Inference in conditional moment restriction models when there is selection due to stratificationCosma, Antonio ; Kostyrka, André ; Tripathi, Gautam E-print/Working paper (2017)Detailed reference viewed: 184 (32 UL) Integrated likelihood based inference for nonlinear panel data models with unobserved effectsSchumann, Martin ; Severini, Thomas A.; Tripathi, Gautam E-print/Working paper (2017)Detailed reference viewed: 92 (7 UL) Reassessment Of Lesion-Associated Gene And Variant Pathogenicity In Focal Human EpilepsiesNeupert, Lisa Marie; Nothnagel, Michael; May, Patrick et alE-print/Working paper (2017)Purpose: Increasing availability of surgically resected brain tissue from Focal Cortical Dysplasia and low-grade epilepsy-associated tumor patients fostered large-scale genetic examination. However ... [more ▼]Purpose: Increasing availability of surgically resected brain tissue from Focal Cortical Dysplasia and low-grade epilepsy-associated tumor patients fostered large-scale genetic examination. However, assessment of germline and somatic variant pathogenicity remains difficult. Methods: Here, we critically reevaluated the pathogenicity for all neuropathology-associated variants reported to date in the PubMed and ClinVar databases, including 12 disease-related genes and 88 neuropathology-associated missense variants. We (1) assessed evolutionary gene constraint using the pLI and missense z scores, (2) applied guidelines by the American College of Medical Genetics and Genomics (ACMG), and (3) predicted pathogenicity by using PolyPhen-2, CADD, and GERP. Results: Constraint analysis classified only seven out of 12 genes to be likely disease-associated, while 35 (40\%) of those 88 variants were classified as being variants of unknown significance (VUS) and 53 (60\%) as being likely pathogenic (LPII). Pathogenicity prediction yielded discrimination between neuropathology-associated variants (LPII and VUS) and rare variant scores obtained from individuals present in the Genome Aggregation Database (gnomAD). Conclusion: We conclude that several VUS are likely disease-associated and will be reclassified by future molecular evidence. In summary, interpretation of lesion-associated gene variants remains complex while the application of current ACMG guidelines including bioinformatic pathogenicity prediction will help improving interpretation and prediction. [less ▲]Detailed reference viewed: 137 (4 UL) Grenzüberschreitende Alltagspraktiken in der Großregion SaarLorLuxWille, Christian ; Pauly, Michel ; Caruso, Geoffrey et alE-print/Working paper (2017)This paper examines everyday practices carried out by the inhabitants of Saarland, Lorraine, Luxembourg, Rhineland-Palatinate and Wallonia in neighbouring regions abroad. The key consideration here is ... [more ▼]This paper examines everyday practices carried out by the inhabitants of Saarland, Lorraine, Luxembourg, Rhineland-Palatinate and Wallonia in neighbouring regions abroad. The key consideration here is that the Greater Region SaarLorLux can be defined as a cross-border reality of life based on the cross-border implementation of everyday practices of its inhabitants. In such a socio-constructivist perspective, it is not asked what the Greater Region SaarLorLux is, but in what ways it is constituted or how it manifests itself in the everyday life of its inhabitants. [less ▲]Detailed reference viewed: 131 (8 UL) Toward a Democratic, Effective and Accessible Jordanian Constitutional CourtAl Hajjaji, Shams Al Din E-print/Working paper (2017)Detailed reference viewed: 20 (0 UL) A longitudinal twin family study of the life course and individual development (TWINLIFE): Data collection and instruments of wave 1 face-to-face interviewsBrix, J.; Pupeter, M.; Rysina, A. et alE-print/Working paper (2017)Detailed reference viewed: 20 (2 UL) Large Portfolio Risk Management and Optimal Portfolio Allocation with Dynamic Elliptical CopulasJin, Xisong; Lehnert, Thorsten E-print/Working paper (2017)Detailed reference viewed: 80 (2 UL) Monotonicity of probit weightsSchumann, Martin; Tripathi, Gautam E-print/Working paper (2017)Detailed reference viewed: 51 (1 UL) La grande région SaarLorLux, riche de ses travailleurs frontaliersPigeron-Piroth, Isabelle ; Belkacem, RachidE-print/Working paper (2016)Detailed reference viewed: 70 (7 UL)