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Fundamental rights and primacy of EU law: The Union’s constitutional system throughout selected case-law of the Court of Justice on criminal affairs Zinonos, Panagiotis E-print/Working paper (in press) Detailed reference viewed: 13 (3 UL)Entwicklungen der Trans*-Bewegung in der Bundesrepublik Deutschland De Silva, Adrian E-print/Working paper (in press) Detailed reference viewed: 26 (0 UL)Properness for circle packings and Delaunay circle patterns on complex projective structures Schlenker, Jean-Marc ; Yarmola, Andrew E-print/Working paper (2018) We consider circle packings and, more generally, Delaunay circle patterns - arrangements of circles arising from a Delaunay decomposition of a finite set of points - on surfaces equipped with a complex ... [more ▼] We consider circle packings and, more generally, Delaunay circle patterns - arrangements of circles arising from a Delaunay decomposition of a finite set of points - on surfaces equipped with a complex projective structure. Motivated by a conjecture of Kojima, Mizushima and Tan, we prove that the forgetful map sending a complex projective structure admitting a circle packing with given nerve (resp. a Delaunay circle pattern with given nerve and intersection angles) to the underlying complex structure is proper. [less ▲] Detailed reference viewed: 4 (0 UL)Associative, idempotent, symmetric, and order-preserving operations on chains Devillet, Jimmy ; Teheux, Bruno E-print/Working paper (2018) We characterize the associative, idempotent, symmetric, and order-preserving operations on (finite) chains in terms of properties of (the Hasse diagram of) their associated semilattice order. In ... [more ▼] We characterize the associative, idempotent, symmetric, and order-preserving operations on (finite) chains in terms of properties of (the Hasse diagram of) their associated semilattice order. In particular, we prove that the number of associative, idempotent, symmetric, and order-preserving operations on an n-element chain is the nth Catalan number. [less ▲] Detailed reference viewed: 4 (0 UL)The persistence of the gender earnings gap: cohort trends and the role of education in twelve countries Bar-Haim, Eyal ; Chauvel, Louis ; et al E-print/Working paper (2018) Studying twelve countries over 30 years, we examine whether women’s educational expansion has translated into a closing gender earnings gap. As educational attainment is cohort-dependent, an Age-Period ... [more ▼] Studying twelve countries over 30 years, we examine whether women’s educational expansion has translated into a closing gender earnings gap. As educational attainment is cohort-dependent, an Age-Period-Cohort analysis is most appropriate in our view. Using the Luxembourg Income Study (LIS) data, we show that while in terms of attainment of tertiary education women have caught up and often even outperform men, substantial gender differences in earnings persist in all countries. These results are consistent with the composition of the top earnings decile. Using Blinder-Oaxaca decomposition methods, we demonstrate that the role of education in explaining the gender earnings gap has been limited and even decreased over cohorts. Contrary, employment status as well as occupation explain a more substantial part in all countries. We conclude that earnings differences at levels far from gender equality likely also persist in the future, even if the “rise of women” in terms of education continues. [less ▲] Detailed reference viewed: 45 (3 UL)WWI: Kosakenmütze und roter Stern: Russische Gefangene in Luxemburg 1918 Ganschow, Inna E-print/Working paper (2018) Die vorliegende Teiluntersuchung beschäftigt sich mit den 3.100 russischen Kriegsgefangenen, die 1918 Luxemburg passierten. Etwa 300 blieben nachweislich in Luxemburg, da die sowjetische Ideologie in ... [more ▼] Die vorliegende Teiluntersuchung beschäftigt sich mit den 3.100 russischen Kriegsgefangenen, die 1918 Luxemburg passierten. Etwa 300 blieben nachweislich in Luxemburg, da die sowjetische Ideologie in ihrer neuen Heimat, die nun Russische Sowjetische Föderative Sozialistische Republik hieß, sie nicht ansprach. In einer mikrohistorischen Perspektive werden mehrere Schicksale vorgeführt, anhand derer man zum einen die Bedingungen dieser Emigration versteht, die sich zwar auf neutralen Boden vollzog, jedoch unter der stetigen Verfolgung durch die deutsche Armee, die die Unabhängigkeit Luxemburgs wenig kümmerte. Zum anderen wird gezeigt, wie “Russisch” immer mehr mit “Kommunistisch” assoziiert wurde und alle Russen unter Verdacht standen, “rot” zu sein. [less ▲] Detailed reference viewed: 16 (2 UL)More Necessary and Less Sufficient: An Age-Period-Cohort Approach to Overeducation in Comparative Perspective Bar-Haim, Eyal ; Chauvel, Louis ; Hartung, Anne E-print/Working paper (2018) In many countries, the skilled labor market has lagged behind educational expansion. As a result of increased competition, younger cohorts of the highly educated face decreasing returns to education or ... [more ▼] In many countries, the skilled labor market has lagged behind educational expansion. As a result of increased competition, younger cohorts of the highly educated face decreasing returns to education or overeducation. Surprisingly, decreasing occupational outcomes do not coincide empirically with the economic returns among those with tertiary education. Regarding the process of changes in economic returns to education based on cohort transformations, we expect that the expansion of tertiary education affects specific cohorts, which find themselves facing more labor market competition. As a result, the economic returns to education should decrease over cohorts even though they remain stable and even increase during the same period. To study this process, we model economic returns with a new Age-Period- Cohort-Trended-Lag (APCTLAG) method, which allows comparing the gap in economic returns between tertiary and less than tertiary education over cohorts. Using the Luxembourg Income Study (LIS), we analyze trends over three decades in 12 countries. Our results confirm that educational returns for tertiary education have declined over time, even though the gap between the educated and the less educated has remained similar in most of the countries. For younger cohorts, tertiary education has become more necessary to survive in the competitive labor market, but the actual economic returns to it have decreased - making tertiary education less sufficient than before. [less ▲] Detailed reference viewed: 25 (5 UL)Le régime d’Etat providence joue un rôle dans le bien-être Samuel, Robin ; Hadjar, Andreas ; E-print/Working paper (2018) Detailed reference viewed: 9 (2 UL)The Global Triumph of the Research University: A Driving Force of Science Production ; Dusdal, Jennifer ; Powell, Justin J W et al E-print/Working paper (2018) The demand for higher education in countries around the world has never been higher. This increase in education levels has generated many benefits to society, including more knowledgeable citizens ... [more ▼] The demand for higher education in countries around the world has never been higher. This increase in education levels has generated many benefits to society, including more knowledgeable citizens, advanced economies, and enhanced longevity. We have also seen countries and universities invest heavily in science, technology, engineering, and mathematics (STEM), including health (STEM+) research and scientific output. This has resulted in unexpected pure exponential growth in science production around the world. Increased competition, as well as boundary-spanning collaborations, drive unprecedented scientific advancement and technological innovation. In a book entitled The Century of Science: The Global Triumph of the Research University, we explore global scientific developments from the early 20th century to today. University-based research, especially, has risen globally to become the driving force of science production in STEM+ fields. Universities, with their multiple missions of research, teaching, and public service, are uniquely positioned to contribute to scientific output while simultaneously producing the next generation of scientists. [less ▲] Detailed reference viewed: 28 (5 UL)Connecting Personal Data of Third Country Nationals: Interoperability of EU Databases in the Light of the CJEU's Case Law on Data Retention Quintel, Teresa Alegra E-print/Working paper (2018) On 12 December 2017, the EU Commission presented a proposal on the interoperability of EU large-scale Information Systems. The proposal seeks to enable all centralised EU databases for security, border ... [more ▼] On 12 December 2017, the EU Commission presented a proposal on the interoperability of EU large-scale Information Systems. The proposal seeks to enable all centralised EU databases for security, border and migration management to be interconnected by 2020. The underlying IT systems retain data of Third Country Nationals (TCNs), namely travellers, applicants for international protection, information relating to visa applications or data on missing persons and criminals. With the proposal, the Commission seeks to create new possibilities to exchange information, manage migration challenges and to enhance the Union’s internal security. The interconnectivity of databases would introduce fundamental changes to the current structure of EU IT-systems and requires careful consideration and assessment of compliance with EU data protection standards. This also means that access to information in an interoperable system must be strictly aligned to the access rights of the underlying databases and that requesting authorities only obtain the data that they are authorized to access. With interoperability, data once held in silos would be retained in three new centralized databases and would be more easily accessible, also for the prevention, investigation and prosecution of crime. Where criminal investigations previously required multiple searches in separate databases, this cascading safeguard shall progressively be abandoned to streamline access to personal data by law enforcement authorities. Despite simplified access conditions, this would require new types of processing operations for which the interoperability proposal does not provide a legal basis. During recent years, several judgments of the Court of Justice of the European Union (CJEU) have highlighted the difficulty of striking a proper balance between the fundamental rights to privacy and data protection, enshrined in Article 7 and 8 of the Charter of Fundamental Rights of the European Union (EU Charter) with an increased demand for security and the surveillance of potential criminals. The Court repeatedly pointed out the need to strike a fair balance between these (allegedly) competing interests and emphasised that law enforcement authorities should not be granted access to personal data without prior authorization. Using the CJEU’s judgments as vehicle and considering the assumption that TCNs risk to become subject to data retention measures in a disproportionate manner, the following analysis seeks to assess both existing EU databases and their foreseen interoperability against the requirements established by the Court in order to evaluate their (in)-compatibility with the fundamental rights standards enshrined in the EU Charter. [less ▲] Detailed reference viewed: 39 (4 UL)Delaunay Triangulations of Points on Circles ; ; Parlier, Hugo et al E-print/Working paper (2018) Delaunay triangulations of a point set in the Euclidean plane are ubiquitous in a number of computational sciences, including computational geometry. Delaunay triangulations are not well defined as soon ... [more ▼] Delaunay triangulations of a point set in the Euclidean plane are ubiquitous in a number of computational sciences, including computational geometry. Delaunay triangulations are not well defined as soon as 4 or more points are concyclic but since it is not a generic situation, this difficulty is usually handled by using a (symbolic or explicit) perturbation. As an alternative, we propose to define a canonical triangulation for a set of concyclic points by using a max-min angle characterization of Delaunay triangulations. This point of view leads to a well defined and unique triangulation as long as there are no symmetric quadruples of points. This unique triangulation can be computed in quasi-linear time by a very simple algorithm. [less ▲] Detailed reference viewed: 16 (1 UL)Bayesian variable selection in linear dynamical systems Aalto, Atte ; Goncalves, Jorge E-print/Working paper (2018) We develop a method for reconstructing regulatory interconnection networks between variables evolving according to a linear dynamical system. The work is motivated by the problem of gene regulatory ... [more ▼] We develop a method for reconstructing regulatory interconnection networks between variables evolving according to a linear dynamical system. The work is motivated by the problem of gene regulatory network inference, that is, finding causal effects between genes from gene expression time series data. In biological applications, the typical problem is that the sampling frequency is low, and consequentially the system identification problem is ill-posed. The low sampling frequency also makes it impossible to estimate derivatives directly from the data. We take a Bayesian approach to the problem, as it offers a natural way to incorporate prior information to deal with the ill-posedness, through the introduction of sparsity promoting prior for the underlying dynamics matrix. It also provides a framework for modelling both the process and measurement noises. We develop Markov Chain Monte Carlo samplers for the discrete-valued zero-structure of the dynamics matrix, and for the continuous-time trajectory of the system. [less ▲] Detailed reference viewed: 40 (3 UL)Les délibérations de Colle Val d’Elsa (1312-1336) : entre affirmation d’une autorité seigneuriale, contradiction codifiée et instrument d’assujettissement à Florence Abeles, Solal E-print/Working paper (2018) Detailed reference viewed: 18 (1 UL)Energy efficiency optimization in MIMO interference channels: A successive pseudoconvex approximation approach Yang, Yang ; ; Chatzinotas, Symeon et al E-print/Working paper (2018) Detailed reference viewed: 136 (35 UL)Limit theorems for symmetric U-statistics using contractions Döbler, Christian ; Peccati, Giovanni E-print/Working paper (2018) Detailed reference viewed: 22 (0 UL)Digitalisierung der Arbeit in Luxemburg - Teil 3 Sischka, Philipp ; Steffgen, Georges E-print/Working paper (2018) Arbeitnehmer unterscheiden sich hinsichtlich dem Grad durch den ihre Arbeit von der Digitalisierung betroffen ist sowie durch die Auswirkungen, die die Digitalisierung auf ihre Arbeit und ihr Arbeits(er ... [more ▼] Arbeitnehmer unterscheiden sich hinsichtlich dem Grad durch den ihre Arbeit von der Digitalisierung betroffen ist sowie durch die Auswirkungen, die die Digitalisierung auf ihre Arbeit und ihr Arbeits(er)leben haben. Arbeitnehmer, deren Arbeit stärker durch die Digitalisierung beeinflusst ist, erleben tendenziell mehr Partizipation, Feedback und Autonomie auf ihrer Arbeit. Gleichzeitig weisen sie auch mehr emotionale und mentale Anforderungen, sowie mehr Zeitdruck auf. Arbeitnehmer, deren Arbeit nur in geringem Maß von der Digitalisierung betroffen ist, sind dagegen weniger von emotionalen und mentalen Anforderungen, sowie von Zeitdruck, Konkurrenz und Mobbing betroffen. Insbesondere die geringere Planbarkeit von Arbeitszeit und Freizeit sowie die stärkere Überwachung und Kontrolle der Arbeitsleistung sind negative Konsequenzen der Digitalisierung, die zu einem verstärkten Erleben von emotionalen und mentalen Anforderungen sowie von Zeitdruck, Konkurrenz und Mobbing führt. Die Möglichkeit durch die Digitalisierung auch von zuhause oder von unterwegs arbeiten zu können führt einerseits zu mehr wahrgenommener Autonomie, andererseits ist dieses Potenzial der Digitalisierung auch mit negativen Konsequenzen verknüpft (z.B. erhöhter Zeitdruck). [less ▲] Detailed reference viewed: 14 (1 UL)Digitalisierung der Arbeit in Luxemburg - Teil 2 Sischka, Philipp ; Steffgen, Georges E-print/Working paper (2018) Arbeitnehmer mit höherer formaler Bildung sowie Arbeitnehmer, die als Manager und Führungskräfte, in akademischen Berufen, als Techniker und als Bürokräfte arbeiten, berichten eher von einer gestiegenen ... [more ▼] Arbeitnehmer mit höherer formaler Bildung sowie Arbeitnehmer, die als Manager und Führungskräfte, in akademischen Berufen, als Techniker und als Bürokräfte arbeiten, berichten eher von einer gestiegenen Entscheidungsfreiheit, von geringerer körperlicher Belastung, von mehr Aufgaben, von der Notwendigkeit ständiger Weiterentwicklung der eigenen Fähigkeiten sowie einer erhöhten Arbeitsleistung durch die Digitalisierung. Insbesondere Hilfsarbeitskräfte geben seltener an sowohl von den Vorteilen aus auch von den Nachteilen der Digitalisierung betroffen zu sein. Differenziert nach Geschlecht oder nach Alter ergeben sich oft nur geringfügige Unterschiede. [less ▲] Detailed reference viewed: 10 (0 UL)Bisymmetric and quasitrivial operations: characterizations and enumerations Devillet, Jimmy E-print/Working paper (2018) We investigate the class of bisymmetric and quasitrivial binary operations on a given set X and provide various characterizations of this class as well as the subclass of bisymmetric, quasitrivial, and ... [more ▼] We investigate the class of bisymmetric and quasitrivial binary operations on a given set X and provide various characterizations of this class as well as the subclass of bisymmetric, quasitrivial, and order-preserving binary operations. We also determine explicitly the sizes of these classes when the set X is finite. [less ▲] Detailed reference viewed: 31 (14 UL)Digitalisierung der Arbeit in Luxemburg - Teil 1 Sischka, Philipp ; Steffgen, Georges E-print/Working paper (2018) Die Digitalisierung steht derzeit im Fokus der öffentlichen und politischen Debatte. Im Folgenden wird dargestellt, wie Arbeitnehmer in Luxemburg ihre Arbeit durch die Digitalisierung beeinflusst sehen ... [more ▼] Die Digitalisierung steht derzeit im Fokus der öffentlichen und politischen Debatte. Im Folgenden wird dargestellt, wie Arbeitnehmer in Luxemburg ihre Arbeit durch die Digitalisierung beeinflusst sehen. Hierbei werden die verschiedenen Formen der Digitalisierung sowie die Angst durch den technischen Fortschritt seinen Arbeitsplatz zu verlieren näher beleuchtet. Manager und Führungskräfte, Arbeitnehmer in akademischen Berufen, Techniker sowie Bürokräfte konstatieren einen starken Einfluss der Digitalisierung auf ihre Arbeit. Diese Einschätzung fällt für Arbeitnehmer in Dienstleistungs- und in Handwerksberufen sowie für Bedienern von Anlagen und Hilfsarbeitskräfte moderater aus. Während Manager und Führungskräfte, sowie Arbeitnehmer in akademischen Berufen vor allem die Bedeutung von elektronischer Kommunikation und unterstützender elektronischer Geräte hervorheben, kommt für Techniker und Arbeitnehmer in Handwerksberufen auch noch das Arbeiten mit computergesteuerten Maschinen oder Robotern hinzu. Die mit der Digitalisierung und dem technischen Fortschritt häufig debattierte Angst vor Arbeitsplatzverlust ist insgesamt moderat ausgeprägt. Etwas stärker ist diese bei Arbeitnehmern der Altersgruppe ab 35 Jahren sowie bei Bedienern von Anlagen und Bürokräften ausgeprägt. [less ▲] Detailed reference viewed: 7 (1 UL)Gradient Estimates on Dirichlet and Neumann Eigenfunctions ; Thalmaier, Anton ; E-print/Working paper (2018) By methods of stochastic analysis on Riemannian manifolds, we derive explicit two-sided gradient estimates for Dirichlet eigenfunctions on a d-dimensional compact Riemannian manifold D with boundary ... [more ▼] By methods of stochastic analysis on Riemannian manifolds, we derive explicit two-sided gradient estimates for Dirichlet eigenfunctions on a d-dimensional compact Riemannian manifold D with boundary. Corresponding two-sided gradient estimates for Neumann eigenfunctions are derived in the second part of the paper. [less ▲] Detailed reference viewed: 107 (18 UL)Brexit Seen from Luxembourg Högenauer, Anna-Lena E-print/Working paper (2018) Detailed reference viewed: 26 (5 UL)Alonso and the scaling of urban profiles ; Lemoy, Rémi ; Caruso, Geoffrey E-print/Working paper (2018) Urban characteristics scaling with total population has become an important urban research field since one needs to better understand the benefits and disadvantages of urban growth and fur- ther ... [more ▼] Urban characteristics scaling with total population has become an important urban research field since one needs to better understand the benefits and disadvantages of urban growth and fur- ther population concentration. Urban scaling research, however, is largely disconnected from the empirics and theory of intra-urban structure for it considers averaged attributes and ignores resi- dential choice trade-offs between transport and housing costs within cities. Using this fundamental trade-off, the monocentric model of Alonso provides theory to urban density profiles. However, it is silent about how these profiles scale with population, thus preventing empirical scaling studies to anchor in a strong micro-economic theory. This paper fixes this gap by introducing power laws for land and for population density in the Alonso model. From an augmented model with land use, we derive the conditions at which equilibrium profiles match recent empirical findings about the scaling of urban land and population density profiles in European cities. We find that the Alonso model is theoretically compatible with the observed scaling of population density profiles and leads to a satisfactory representation of European cities. The conditions for this compatibility refine current understanding of wage and transport costs elasticities with population. Although they require a scaling power of the profile of the share of urbanised land that is different from what is observed, it is argued that alternatives specifications of transport cost functions could solve this issue. Thus our results call for revisiting theories about land development and housing processes as well as the empirics of agglomeration benefits and transport costs. [less ▲] Detailed reference viewed: 27 (2 UL)Demographics and FDI: Lessons from China's One-Child Policy ; Koulovatianos, Christos ; et al E-print/Working paper (2018) Lucas (1990) argues that the neoclassical adjustment process fails to explain the relative paucity of FDI inflows from rich to poor countries. In this paper we consider a natural experiment: using China ... [more ▼] Lucas (1990) argues that the neoclassical adjustment process fails to explain the relative paucity of FDI inflows from rich to poor countries. In this paper we consider a natural experiment: using China as the treated country and India as the control, we show that the dynamics of the relative FDI flows subsequent to the implementation of China's one-child policy, as seen in the data, are consistent with neoclassical fundamentals. In particular, following the introduction of the one-child policy in China, the capital-labor (K/L) ratio of China increased relative to that of India, and, simultaneously, relative FDI inflows into China vs. India declined. These observations are explained in the context of a simple neoclassical OLG paradigm. The adjustment mechanism works as follows: the reduction in the (urban) labor force due to the one-child policy increases the savings per capita. This increases the K/L ratio and reduces the marginal product of capital (MPK). The reduction in MPK (relative to India) reduces the relative attractiveness of investment in China and is thus associated with lower FDI/GDP ratios. Our paper contributes to the nascent literature exploring demographic transitions and their effects on FDI flows. [less ▲] Detailed reference viewed: 47 (10 UL)Fragebogen HBSC 2018 (enseignement fondamental) Heinz, Andreas E-print/Working paper (2018) Detailed reference viewed: 53 (9 UL)Fragebogen HBSC 2018 (enseignement secondaire) Heinz, Andreas E-print/Working paper (2018) Detailed reference viewed: 31 (3 UL)La réponse au défi migratoire : «Europe souveraine» ou «souverainisme de repli» ? Gatti, Mauro E-print/Working paper (2018) La migration est probablement le « défi majeur » de l’Europe, aujourd’hui et dans les années qui viennent, comme le reconnaît Emmanuel Macron dans son discours de la Sorbonne de septembre 2017. On peut ... [more ▼] La migration est probablement le « défi majeur » de l’Europe, aujourd’hui et dans les années qui viennent, comme le reconnaît Emmanuel Macron dans son discours de la Sorbonne de septembre 2017. On peut noter, par ailleurs, que la gestion de ce défi est à présent inadéquate : si 285.000 migrants ont été sauvés par des opérations coordonnées par l’Union européenne, 3.139 sont morts en 2017 ; en outre, l’état des droits des migrants dans l’Union et, surtout, dans les pays partenaires, reste problématique. Le « souverainisme de repli » n’assure aucune solution : « l’Europe seule peut, en un mot, assurer une souveraineté réelle » (Macron). Et la souveraineté de l’Europe – conçue comme la « capacité à exister dans le monde actuel pour y défendre nos valeurs et nos intérêts » – ne peut que s’assurer par la « solidarité » entre les Etats membres. Emmanuel Macron propose deux solutions au défi de la migration, qui paraissent toutefois insuffisantes ou illusoires : la création d’un « espace commun des frontières » vis-à- vis de l’extérieur et une gestion plus efficace de l’asile à l’intérieur de l’Union. [less ▲] Detailed reference viewed: 38 (3 UL)Dihedral Universal Deformations Deo, Shaunak ; Wiese, Gabor E-print/Working paper (2018) This article deals with universal deformations of dihedral representations with a particular focus on the question when the universal deformation is dihedral. Results are obtained in three settings: (1 ... [more ▼] This article deals with universal deformations of dihedral representations with a particular focus on the question when the universal deformation is dihedral. Results are obtained in three settings: (1) representation theory, (2) algebraic number theory, (3) modularity. As to (1), we prove that the universal deformation is dihedral if all infinitesimal deformations are dihedral. Concerning (2) in the setting of Galois representations of number fields, we give sufficient conditions to ensure that the universal deformation relatively unramified outside a finite set of primes is dihedral, and discuss in how far these conditions are necessary. As a side-result, we obtain cases of the unramified Fontaine-Mazur conjecture. As to (3), we prove a modularity theorem of the form `R=T' for parallel weight one Hilbert modular forms for cases when the minimal universal deformation is dihedral. [less ▲] Detailed reference viewed: 31 (0 UL)Local curvature estimates for the Laplacian flow Li, Yi E-print/Working paper (2018) Detailed reference viewed: 28 (6 UL)A volume-averaged nodal projection method for the Reissner-Mindlin plate model ; ; Hale, Jack et al E-print/Working paper (2018) We introduce a novel meshfree Galerkin method for the solution of Reissner-Mindlin plate problems that is written in terms of the primitive variables only (i.e., rotations and transverse displacement) and ... [more ▼] We introduce a novel meshfree Galerkin method for the solution of Reissner-Mindlin plate problems that is written in terms of the primitive variables only (i.e., rotations and transverse displacement) and is devoid of shear-locking. The proposed approach uses linear maximum-entropy approximations and is built variationally on a two-field potential energy functional wherein the shear strain, written in terms of the primitive variables, is computed via a volume-averaged nodal projection operator that is constructed from the Kirchhoff constraint of the three-field mixed weak form. The stability of the method is rendered by adding bubble-like enrichment to the rotation degrees of freedom. Some benchmark problems are presented to demonstrate the accuracy and performance of the proposed method for a wide range of plate thicknesses. [less ▲] Detailed reference viewed: 20 (3 UL)Math around the Clock Perucca, Antonella E-print/Working paper (2018) We present several original arithmetical clocks presenting the numbers from 1 to 12 according to some specific theme (e.g. use only the digit 7). Detailed reference viewed: 35 (6 UL)Accounting for Differences in Income Inequality across Countries: Ireland and the United Kingdom ; van Kerm, Philippe ; et al E-print/Working paper (2018) This paper proposes a framework for studying international differences in the distribution of household income. Integrating micro-econometric and micro-simulation approaches in a decomposition analysis it ... [more ▼] This paper proposes a framework for studying international differences in the distribution of household income. Integrating micro-econometric and micro-simulation approaches in a decomposition analysis it quantifies the role of tax-benefit systems, employment and occupational structures, labour prices and market returns, and demographic composition in accounting for differences in income inequality across countries. Building upon EUROMOD (the European tax-benefit calculator) and its harmonized datasets, the model is portable and can be implemented for any cross-country comparisons within the EU. An application to the UK and Ireland--two countries that have much in common while displaying different levels of inequality--shows that differences in tax-benefit rules between the two countries account for roughly half of the observed difference in disposable household income inequality. Demographic differences play negligible roles. The Irish tax-benefit system is more redistributive than UK's due to a higher tax progressivity and higher average transfer rates. These are largely attributable to policy parameter differences, but also to differences in pre-tax, pre-transfer income distributions. [less ▲] Detailed reference viewed: 13 (1 UL)Quantum thermodynamics of the resonant-level model with driven system-bath coupling Schmidt, Thomas ; Esposito, Massimiliano ; Haughian, Patrick E-print/Working paper (2017) Detailed reference viewed: 40 (1 UL)Systembasierte Analyse von Wirkstoffresistenzen bei Melanom Lucarelli, Philippe ; De Landtsheer, Sébastien ; Sauter, Thomas E-print/Working paper (2017) Detailed reference viewed: 22 (3 UL)Isolation of nucleic acids from low biomass samples: detection and removal of sRNA contaminants ; ; Kaysen, Anne et al E-print/Working paper (2017) Sequencing-based analyses of low-biomass samples are known to be prone to misinterpretation due to the potential presence of contaminating molecules derived from laboratory reagents and environments. Due ... [more ▼] Sequencing-based analyses of low-biomass samples are known to be prone to misinterpretation due to the potential presence of contaminating molecules derived from laboratory reagents and environments. Due to its inherent instability, contamination with RNA is usually considered to be unlikely. Here we report the presence of small RNA (sRNA) contaminants in widely used microRNA extraction kits and means for their depletion. Sequencing of sRNAs extracted from human plasma samples was performed and significant levels of non-human (exogenous) sequences were detected. The source of the most abundant of these sequences could be traced to the microRNA extraction columns by qPCR-based analysis of laboratory reagents. The presence of artefactual sequences originating from the confirmed contaminants were furthermore replicated in a range of published datasets. To avoid artefacts in future experiments, several protocols for the removal of the contaminants were elaborated, minimal amounts of starting material for artefact-free analyses were defined, and the reduction of contaminant levels for identification of bona fide sequences using 'ultra-clean' extraction kits was confirmed. In conclusion, this is the first report of the presence of RNA molecules as contaminants in laboratory reagents. The described protocols should be applied in the future to avoid confounding sRNA studies. [less ▲] Detailed reference viewed: 33 (1 UL)Fermionic reaction coordinates and their application to an autonomous Maxwell demon in the strong coupling regime Strasberg, Philipp ; ; Schmidt, Thomas et al E-print/Working paper (2017) Detailed reference viewed: 27 (0 UL)Fundamental limits to helical edge conductivity due to sphin-phonon scattering Groenendijk, Solofo ; ; Schmidt, Thomas E-print/Working paper (2017) Detailed reference viewed: 13 (0 UL)Universal scaling of quench-induced correlations in a one-dimensional channel at finite temperature Calzona, Alessio ; ; et al E-print/Working paper (2017) Detailed reference viewed: 28 (0 UL)Internetdelikte und die Herausforderungen des Forum Shoppings Schmitz, Sandra E-print/Working paper (2017) Detailed reference viewed: 18 (1 UL)L'ethnographie du travail de Saint-Georges, Ingrid E-print/Working paper (2017) Detailed reference viewed: 19 (1 UL)Mechanizing Principia Logico-Metaphysica in Functional Type Theory ; Benzmüller, Christoph ; 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: 18 (2 UL)Time Averages of Markov Processes and Applications to Two-Timescale Problems Pepin, Bob E-print/Working paper (2017) Detailed reference viewed: 20 (0 UL)Visual characterization of associative quasitrivial nondecreasing functions on finite chains Kiss, Gergely E-print/Working paper (2017) Detailed reference viewed: 17 (3 UL)3D Printing: The Next 5 years by Claude Wolf – Into the Future engineered by the Zs Wolf, 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: 98 (14 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: 14 (1 UL)Scattering theory without injectivity radius assumptions and spectral stability for the Ricci flow ; Thalmaier, Anton E-print/Working paper (2017) We prove a completely new integral criterion for the existence and completeness of the wave operators W_{\pm}(-\Delta_h,-\Delta_g, I_{g,h}) corresponding to the (unique self-adjoint realizations of) the ... [more ▼] We prove a completely new integral criterion for the existence and completeness of the wave operators W_{\pm}(-\Delta_h,-\Delta_g, I_{g,h}) corresponding to the (unique self-adjoint realizations of) the Laplace-Beltrami operators -\Delta_j, j=g,h, that are induced by two quasi-isometric complete Riemannian metrics g and h on an open manifold M. In particular, this result provides a criterion for the absolutely continuous spectra of -\Delta_g and -\Delta_h to coincide. Our proof relies on estimates that are obtained using a probabilistic Bismut type formula for the gradient of a heat semigroup. Unlike all previous results, our integral criterion only requires some lower control on the Ricci curvatures and some upper control on the heat kernels, but no control at all on the injectivity radii. As a consequence, we obtain a stability result for the absolutely continuous spectrum under a Ricci flow. [less ▲] Detailed reference viewed: 67 (6 UL)Dynamics of Income Rank Volatility: Evidence from Germany and the US Chauvel, Louis ; Hartung, Anne ; E-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: 79 (12 UL)Weakly Inscribed Polyhedra ; Schlenker, Jean-Marc E-print/Working paper (2017) Detailed reference viewed: 16 (0 UL)Towards a Quantitative Averaging Principle for Stochastic Differential Equations Pepin, Bob E-print/Working paper (2017) Detailed reference viewed: 21 (0 UL)Isogeometric analysis of thin Reissner-Mindlin plates and shells: Locking phenomena and generalized local B-bar method Hu, Qingyuan ; ; et al E-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: 145 (13 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: 11 (0 UL)On functional equations characterizing derivations: methods and examples ; Kiss, Gergely ; E-print/Working paper (2017) Detailed reference viewed: 20 (3 UL)Reductions of points on algebraic groups ; Perucca, Antonella E-print/Working paper (2017) Detailed reference viewed: 16 (4 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: 8 (0 UL)Arbeitsmotivation von Arbeitnehmern in Luxemburg Sischka, 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: 50 (6 UL)Associative idempotent nondecreasing functions are reducible Kiss, Gergely ; E-print/Working paper (2017) An n-variable associative function is called reducible if it can be written as a composition of a binary associative function. In this paper we summarize the known results when the function is defined on ... [more ▼] An n-variable associative function is called reducible if it can be written as a composition of a binary associative function. In this paper we summarize the known results when the function is defined on a chain and nondecreasing. The main result of this paper shows that associative idempotent and nondecreasing functions are uniquely reducible. [less ▲] Detailed reference viewed: 10 (2 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: 28 (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: 8 (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: 7 (0 UL)Localisation résidentielle de la population étrangère selon la nationalité et la structure urbaine au Luxembourg Pigeron-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: 61 (4 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: 21 (1 UL)Cross-border mergers and acquisitions: Evidence from Indochina Wolff, Christian E-print/Working paper (2017) Detailed reference viewed: 19 (1 UL)La restructuration des dettes publiques saisie par le droit de l'Union européenne Allemand, 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: 41 (1 UL)Understanding audit oversight transformation : ramifications of institutional work and the power of (de-)mythologizing ; 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: 28 (2 UL)Gesundheitsverhalten von Arbeitnehmern in Luxemburg Sischka, 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: 42 (4 UL)The economic programme of Emmanuel Macron Chiocchetti, 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: 18 (0 UL)Characterizations of quasitrivial symmetric nondecreasing associative operations Devillet, Jimmy ; Kiss, Gergely ; Marichal, Jean-Luc E-print/Working paper (2017) In this paper we are interested in the class of n-ary operations on an arbitrary chain that are quasitrivial, symmetric, nondecreasing, and associative. We first provide a description of these operations ... [more ▼] In this paper we are interested in the class of n-ary operations on an arbitrary chain that are quasitrivial, symmetric, nondecreasing, and associative. We first provide a description of these operations. We then prove that associativity can be replaced with bisymmetry in the definition of this class. Finally we investigate the special situation where the chain is finite. [less ▲] Detailed reference viewed: 24 (12 UL)Scaling evidence of the homothetic nature of cities Lemoy, 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: 56 (6 UL)Hyperbolic ends with particles and grafting on singular surfaces ; Schlenker, Jean-Marc E-print/Working paper (2017) We prove that any hyperbolic end with particles (cone singularities along infinite curves of angles less than π) admits a unique foliation by constant Gauss curvature surfaces. Using a form of duality ... [more ▼] We prove that any hyperbolic end with particles (cone singularities along infinite curves of angles less than π) admits a unique foliation by constant Gauss curvature surfaces. Using a form of duality between hyperbolic ends with particles and convex globally hyperbolic maximal (GHM) de Sitter spacetime with particles, it follows that any convex GHM de Sitter spacetime with particles also admits a unique foliation by constant Gauss curvature surfaces. We prove that the grafting map from the product of Teichm\"uller space with the space of measured laminations to the space of complex projective structures is a homeomorphism for surfaces with cone singularities of angles less than π, as well as an analogue when grafting is replaced by "smooth grafting". [less ▲] Detailed reference viewed: 11 (0 UL)Benelux, Europe and the Cold War, the power of non-powers Paravantis, 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: 38 (5 UL)Universal Reasoning, Rational Argumentation and Human-Machine Interaction Benzmüller, 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: 12 (3 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: 15 (1 UL)Sudoses et inégalités sociales ; Baumann, Michèle E-print/Working paper (2017) Des chercheurs du Ministère de la Santé (Dr. Alain ORIGER) et de l’unité de recherche INSIDE, Institut Santé & Comportement (Pr. Michèle BAUMANN et son équipe) ont publié récemment dans la revue ... [more ▼] Des chercheurs du Ministère de la Santé (Dr. Alain ORIGER) et de l’unité de recherche INSIDE, Institut Santé & Comportement (Pr. Michèle BAUMANN et son équipe) ont publié récemment dans la revue scientifique PLoS ONE un article intitulé : A social gradient in fatal opioids and cocaine related overdoses ? Sélectionné par un jury d’experts internationaux, cet article a été primé au Scientific Award 2016 dans le cadre de l’European Monitoring Centre for Drugs and Drug Addiction.h ttps://insideblog.uni.lu/surdoses-et-inegalites-sociales/ [less ▲] Detailed reference viewed: 72 (13 UL)Tempered subanalytic topology on algebraic varieties Petit, 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: 12 (2 UL)The maximum number of systoles for genus two Riemann surfaces with abelian differentials ; 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: 34 (3 UL)Images of Galois representations in mod p Hecke algebras Amoros Carafi, Laia E-print/Working paper (2017) Detailed reference viewed: 29 (2 UL)C’était extrêmement violent» Il y a 100 ans, la révolution de Février a provoqué la fin de l’Empire russe Paravantis, 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: 39 (9 UL)Wohlbefinden von Arbeitnehmern in Luxemburg Sischka, 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: 55 (11 UL)How did the ECB become a fully-fledged central bank of the eurozone? Gren, Jakub E-print/Working paper (2017) Detailed reference viewed: 72 (5 UL)Evaluating How Child Allowances and Daycare Subsidies Affect Fertility ; Koulovatianos, Christos ; Li, Jian et al E-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: 48 (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: 18 (0 UL)Bayesian inference for the stochastic identification of elastoplastic material parameters: Introduction, misconceptions and insights Rappel, Hussein ; Beex, Lars ; Hale, Jack et al E-print/Working paper (2017) We discuss Bayesian inference (BI) for the probabilistic identification of material parameters. This contribution aims to shed light on the use of BI for the identification of elastoplastic material ... [more ▼] We discuss Bayesian inference (BI) for the probabilistic identification of material parameters. This contribution aims to shed light on the use of BI for the identification of elastoplastic material parameters. For this purpose a single spring is considered, for which the stress-strain curves are artificially created. Besides offering a didactic introduction to BI, this paper proposes an approach to incorporate statistical errors both in the measured stresses, and in the measured strains. It is assumed that the uncertainty is only due to measurement errors and the material is homogeneous. Furthermore, a number of possible misconceptions on BI are highlighted based on the purely elastic case. [less ▲] Detailed reference viewed: 274 (88 UL)Institutional Determinants of Early Job Insecurity in Nine European Countries: Country Report Switzerland ; ; et al E-print/Working paper (2017) An overview of institutional determinants of early job insecurity in Switzerland. Detailed reference viewed: 19 (5 UL)Chromatic numbers for the hyperbolic plane and discrete analogs Parlier, Hugo ; E-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: 25 (2 UL)The Turkish State of Emergency Under Turkish Constitutional Law and International Human Rights Law Baglayan Ceyhan, Basak E-print/Working paper (2017) Detailed reference viewed: 83 (1 UL)A Peccati-Tudor type theorem for Rademacher chaoses Zheng, 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: 29 (7 UL)Eulerian idempotent, pre-Lie logarithm and combinatorics of trees ; 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: 20 (0 UL)Technological progress, the supply of hours worked, and the consumption-leisure complementarity Irmen, 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: 25 (4 UL)Statistical inference for Vasicek-type model driven by Hermite processes Nourdin, Ivan ; Tran, Thi Thanh Diu E-print/Working paper (2017) Detailed reference viewed: 43 (2 UL)Fourth moment theorems on The Poisson space in any dimension Döbler, Christian ; Vidotto, Anna ; Zheng, Guangqu E-print/Working paper (2017) Detailed reference viewed: 97 (11 UL)Exchangeable pairs on Wiener chaos Nourdin, Ivan ; Zheng, Guangqu E-print/Working paper (2017) Detailed reference viewed: 45 (4 UL)Nodal Statistics of Planar Random Waves Nourdin, Ivan ; Peccati, Giovanni ; Rossi, Maurizia E-print/Working paper (2017) Detailed reference viewed: 33 (0 UL)Multi-oriented props and homotopy algebras with branes Merkulov, 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: 44 (3 UL)Liberté de circulation des personnes : citoyenneté de mouvement, citoyenneté en mouvement Warin, Catherine E-print/Working paper (2017) Detailed reference viewed: 21 (2 UL)Premiers pas dans le métier d'enseignant: quand la langue s'en mêle de Saint-Georges, Ingrid E-print/Working paper (2017) Detailed reference viewed: 15 (2 UL)Monotonicity of probit weights ; Tripathi, Gautam E-print/Working paper (2017) Detailed reference viewed: 35 (1 UL)Conformal actions of real-rank 1 simple Lie groups on pseudo-Riemannian manifolds Pecastaing, Vincent E-print/Working paper (2017) Given a simple Lie group G of rank 1, we consider compact pseudo-Riemannian manifolds (M,g) of signature (p,q) on which G can act conformally. Precisely, we determine the smallest possible value for the ... [more ▼] Given a simple Lie group G of rank 1, we consider compact pseudo-Riemannian manifolds (M,g) of signature (p,q) on which G can act conformally. Precisely, we determine the smallest possible value for the index min(p,q) of the metric. When the index is optimal and G non-exceptional, we prove that the metric must be conformally flat, confirming the idea that in a "good" dynamical context, a geometry is determined by its automorphisms group. This completes anterior investigations on pseudo-Riemannian conformal actions of semi-simple Lie groups of maximal real-rank. Combined with these results, we obtain as corollary the list of semi-simple Lie groups without compact factor that can act on compact Lorentzian manifolds. We also derive consequences in CR geometry via the Fefferman fibration. [less ▲] Detailed reference viewed: 28 (4 UL)Asymptotic distribution of nodal intersections for arithmetic random waves Rossi, Maurizia ; E-print/Working paper (2017) Detailed reference viewed: 23 (0 UL)La représentation de la littérature de la Lorraine dans l'espace - utilisation d'un système d'information géographique via Internet Helfer, Malte E-print/Working paper (2017) Detailed reference viewed: 12 (2 UL)Constant mean curvature foliation of globally hyperbolic (2+1)-spacetime with particles ; Tamburelli, Andrea E-print/Working paper (2017) Let M be a globally hyperbolic maximal compact 3-dimensional spacetime locally modelled on Minkowski, anti-de Sitter or de Sitter space. It is well known that M admits a unique foliation by constant mean ... [more ▼] Let M be a globally hyperbolic maximal compact 3-dimensional spacetime locally modelled on Minkowski, anti-de Sitter or de Sitter space. It is well known that M admits a unique foliation by constant mean curvature surfaces. In this paper we extend this result to singular spacetimes with particles (cone singularities of angles less than π along time-like geodesics). [less ▲] Detailed reference viewed: 42 (0 UL)Recurrence and Transience of Frogs with Drift on Z^d Döbler, Christian ; ; et al E-print/Working paper (2017) Detailed reference viewed: 33 (1 UL) |
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