References of "E-prints/Working papers"
     in
Bookmark and Share    
See detailThe formal moment map geometry of the space of symplectic connections
La Fuente-Gravy, Laurent UL

E-print/Working paper (2021)

We deform the moment map picture on the space of symplectic connections on a symplectic manifold. To do that, we study a vector bundle of Fedosov star product algebras on the space of symplectic ... [more ▼]

We deform the moment map picture on the space of symplectic connections on a symplectic manifold. To do that, we study a vector bundle of Fedosov star product algebras on the space of symplectic connections. We describe a natural formal connection on this bundle adapted to the star product algebras on the fibers. We study its curvature and show the star product trace of the curvature is a formal symplectic form on the space of symplectic connections. The action of Hamiltonian diffeomorphisms on symplectic connections preserves the formal symplectic structure and we show the star product trace can be interpreted as a formal moment map for this action. Finally, we apply this picture to study automorphisms of star products and Hamiltonian diffeomorphisms. [less ▲]

Detailed reference viewed: 63 (0 UL)
Full Text
See detailHeterozygous variants in KCNC2 cause a broad spectrum of epilepsy phenotypes associated with characteristic functional alterations 2021.05.21.21257099
Schwarz, Niklas; Seiffert, Simone; Pendziwiat, Manuela et al

E-print/Working paper (2021)

Background KCNC2 encodes a member of the shaw-related voltage-gated potassium channel family (KV3.2), which are important for sustained high-frequency firing and optimized energy efficiency of action ... [more ▼]

Background KCNC2 encodes a member of the shaw-related voltage-gated potassium channel family (KV3.2), which are important for sustained high-frequency firing and optimized energy efficiency of action potentials in the brain.Methods Individuals with KCNC2 variants detected by exome sequencing were selected for clinical, further genetic and functional analysis. The cases were referred through clinical and research collaborations in our study. Four de novo variants were examined electrophysiologically in Xenopus laevis oocytes.Results We identified novel KCNC2 variants in 27 patients with various forms of epilepsy. Functional analysis demonstrated gain-of-function in severe and loss-of-function in milder phenotypes as the underlying pathomechanisms with specific response to valproic acid.Conclusion These findings implicate KCNC2 as a novel causative gene for epilepsy emphasizing the critical role of KV3.2 in the regulation of brain excitability with an interesting genotype-phenotype correlation and a potential concept for precision medicine. [less ▲]

Detailed reference viewed: 78 (2 UL)
Full Text
See detailAggregated hold-out for sparse linear regression with a robust loss function
Maillard, Guillaume UL

E-print/Working paper (2021)

Sparse linear regression methods generally have a free hyperparameter which controls the amount of sparsity, and is subject to a bias-variance tradeoff. This article considers the use of Aggregated hold ... [more ▼]

Sparse linear regression methods generally have a free hyperparameter which controls the amount of sparsity, and is subject to a bias-variance tradeoff. This article considers the use of Aggregated hold-out to aggregate over values of this hyperparameter, in the context of linear regression with the Huber loss function. Aggregated hold-out (Agghoo) is a procedure which averages estimators selected by hold-out (cross-validation with a single split). In the theoretical part of the article, it is proved that Agghoo satisfies a non-asymptotic oracle inequality when it is applied to sparse estimators which are parametrized by their zero-norm. In particular, this includes a variant of the Lasso introduced by Zou, Hastié and Tibshirani \cite{Zou_Has_Tib:2007}. Simulations are used to compare Agghoo with cross-validation. They show that Agghoo performs better than CV when the intrinsic dimension is high and when there are confounders correlated with the predictive covariates. [less ▲]

Detailed reference viewed: 74 (18 UL)
Full Text
See detailTrade-offs in phenotypic noise synchronize emergent topology to actively enhance transport in microbial environments
Dhar, Jayabrata UL; Thai, Le Phuong Anh UL; Ghoshal, Arkajyoti UL et al

E-print/Working paper (2021)

Phenotypic noise underpins homeostasis and fitness of individual cells. Yet, the extent to which noise shapes cell-to-population properties in microbial active matter remains poorly understood. By ... [more ▼]

Phenotypic noise underpins homeostasis and fitness of individual cells. Yet, the extent to which noise shapes cell-to-population properties in microbial active matter remains poorly understood. By quantifying variability in confluent \textit{E.coli} strains, we catalogue noise across different phenotypic traits. The noise, measured over different temperatures serving as proxy for cellular activity, spanned more than two orders of magnitude. The maximum noise was associated with the cell geometry and the critical colony area at the onset of mono-to-multilayer transition (MTMT), while the lower bound was set by the critical time of the MTMT. Our results, supported by a hydrodynamic model, suggest that a trade-off between the noise in the cell geometry and the growth rate can lead to the self-regulation of the MTMT timing. The MTMT cascades synchronous emergence of hydrodynamic fields, actively enhancing the micro-environmental transport. Our results highlight how interplay of phenotypic noise triggers emergent deterministic properties, and reveal the role of multifield topology--of the colony structure and hydrodynamics--to insulate confluent systems from the inherent noise associated with natural cell-environment settings. [less ▲]

Detailed reference viewed: 33 (1 UL)
Full Text
See detailLoss of function variants in the KCNQ5 gene are associated with genetic generalized epilepsies
Krueger, Johanna; Schubert, Julian; Kegele, Josua et al

E-print/Working paper (2021)

Objective: De novo missense variants in KCNQ5, encoding the voltage gated K+ channel KV7.5, have been described as a cause of developmental and epileptic encephalopathy (DEE) or intellectual disability ... [more ▼]

Objective: De novo missense variants in KCNQ5, encoding the voltage gated K+ channel KV7.5, have been described as a cause of developmental and epileptic encephalopathy (DEE) or intellectual disability (ID). We set out to identify disease-related KCNQ5 variants in genetic generalized epilepsy (GGE) and their underlying mechanisms. Methods: 1292 families with GGE were studied by next-generation sequencing. Whole-cell patch-clamp recordings, biotinylation and phospholipid overlay assays were performed in mammalian cells combined with docking and homology modeling. Results: We identified three deleterious heterozygous missense variants, one truncation and one splice site alteration in five independent families with GGE with predominant absence seizures, two variants were also associated with mild to moderate ID. All three missense variants displayed a strongly decreased current density indicating a loss-of-function (LOF). When mutant channels were co-expressed with wild-type (WT) KV7.5 or KV7.5 and KV7.3 channels, three variants also revealed a significant dominant-negative effect on WT channels. Other gating parameters were unchanged. Biotinylation assays indicated a normal surface expression of the variants. The p.Arg359Cys variant altered PI(4,5)P2-interaction, presumably in the non-conducting preopen-closed state. Interpretation: Our study indicates that specific deleterious KCNQ5 variants are associated with GGE, partially combined with mild to moderate ID. The disease mechanism is a LOF partially with dominant-negative effects through functional, rather than trafficking deficits. LOF of KV7.5 channels will reduce the M-current, likely resulting in increased excitability of KV7.5-expressing neurons. Further studies on a network level are necessary to understand which circuits are affected and how the variants induce generalized seizures. [less ▲]

Detailed reference viewed: 66 (0 UL)
See detailFace-GCN: A Graph Convolutional Network for 3D Dynamic Face Identification/Recognition
Papadopoulos, Konstantinos; Kacem, Anis UL; Shabayek, Abdelrahman et al

E-print/Working paper (2021)

Face identification/recognition has significantly advanced over the past years. However, most of the proposed approaches rely on static RGB frames and on neutral facial expressions. This has two ... [more ▼]

Face identification/recognition has significantly advanced over the past years. However, most of the proposed approaches rely on static RGB frames and on neutral facial expressions. This has two disadvantages. First, important facial shape cues are ignored. Second, facial deformations due to expressions can have an impact on the performance of such a method. In this paper, we propose a novel framework for dynamic 3D face identification/recognition based on facial keypoints. Each dynamic sequence of facial expressions is represented as a spatio-temporal graph, which is constructed using 3D facial landmarks. Each graph node contains local shape and texture features that are extracted from its neighborhood. For the classification/identification of faces, a Spatio-temporal Graph Convolutional Network (ST-GCN) is used. Finally, we evaluate our approach on a challenging dynamic 3D facial expression dataset. [less ▲]

Detailed reference viewed: 51 (2 UL)
See detailDisentangled Face Identity Representations for joint 3D Face Recognition and Expression Neutralisation
Kacem, Anis UL; cherenkova, kseniya; Aouada, Djamila UL

E-print/Working paper (2021)

In this paper, we propose a new deep learning-based approach for disentangling face identity representations from expressive 3D faces. Given a 3D face, our approach not only extracts a disentangled ... [more ▼]

In this paper, we propose a new deep learning-based approach for disentangling face identity representations from expressive 3D faces. Given a 3D face, our approach not only extracts a disentangled identity representation but also generates a realistic 3D face with a neutral expression while predicting its identity. The proposed network consists of three components; (1) a Graph Convolutional Autoencoder (GCA) to encode the 3D faces into latent representations, (2) a Generative Adversarial Network (GAN) that translates the latent representations of expressive faces into those of neutral faces, (3) and an identity recognition sub-network taking advantage of the neutralized latent representations for 3D face recognition. The whole network is trained in an end-to-end manner. Experiments are conducted on three publicly available datasets showing the effectiveness of the proposed approach. [less ▲]

Detailed reference viewed: 52 (1 UL)
Full Text
See detailUltra-rare constrained missense variants in the epilepsies: Shared and specific enrichment patterns in neuronal gene-sets 2021.04.18.440264
Koko, Mahmoud; Krause, Roland UL; Sander, Thomas et al

E-print/Working paper (2021)

Background: Burden analysis in epilepsy has shown an excess of deleterious ultra-rare variants (URVs) in few gene-sets, such as known epilepsy genes, constrained genes, ion channel or GABAA receptor genes ... [more ▼]

Background: Burden analysis in epilepsy has shown an excess of deleterious ultra-rare variants (URVs) in few gene-sets, such as known epilepsy genes, constrained genes, ion channel or GABAA receptor genes. We set out to investigate the burden of URVs in a comprehensive range of gene-sets presumed to be implicated in epileptogenesis. Methods: We investigated several constraint and conservation-based strategies to study whole exome sequencing data from European individuals with developmental and epileptic encephalopathies (DEE, n = 1,003), genetic generalized epilepsy (GGE, n = 3,064), and non-acquired focal epilepsy (NAFE, n = 3,522), collected by the Epi25 Collaborative, compared to 3,962 ancestry-matched controls. The burden of 12 URVs types in 92 gene-sets was compared between epilepsy cases (DDE, GGE, NAFE) and controls using logistic regression analysis. Results: Burden analysis of brain-expressed genes revealed an excess of different URVs types in all three epilepsy categories which was largest for constrained missense variants. The URVs burden was prominent in neuron-specific, synaptic and developmental genes as well as genes encoding ion channels and receptors, and it was generally higher for DEE and GGE compared to NAFE. The patterns of URVs burden in gene-sets expressed in inhibitory vs. excitatory neurons or receptors suggested a high burden in both in DEE but a differential involvement of inhibitory genes in GGE, while excitatory genes were predominantly affected in NAFE. Top ranking susceptibility genes from a recent genome-wide association study (GWAS) of generalized and focal epilepsies displayed a higher URVs burden in constrained coding regions in GGE and NAFE, respectively. Conclusions: Using exome-based gene-set burden analysis, we demonstrate that missense URVs affecting mainly constrained sites are enriched in neuronal genes in both common and rare severe epilepsy syndromes. Our results indicate a differential impact of these URVs in genes expressed in inhibitory vs. excitatory neurons and receptors in generalized vs. focal epilepsies. The excess of URVs in top-ranking GWAS risk-genes suggests a convergence of rare deleterious and common risk-variants in the pathogenesis of generalized and focal epilepsies. [less ▲]

Detailed reference viewed: 73 (5 UL)
Full Text
See detailLes langues dans les offres d'emploi au Luxembourg (1984-2019)
Pigeron-Piroth, Isabelle UL; Fehlen, Fernand UL

E-print/Working paper (2021)

À partir d’un échantillon d’offres d’emploi publiées dans le Luxemburger Wort, portant sur la période 1984-2019, cette étude décrit l’évolution des compétences linguistiques exigées ou souhaitées sur le ... [more ▼]

À partir d’un échantillon d’offres d’emploi publiées dans le Luxemburger Wort, portant sur la période 1984-2019, cette étude décrit l’évolution des compétences linguistiques exigées ou souhaitées sur le marché du travail du Luxembourg. Après une présentation contextuelle de la situation linguistique et de l’emploi au Luxembourg, l’analyse empirique des quelques 8 340 offres d’emploi de notre échantillon constitue le cœur de cette publication. Aux divers tableaux et graphiques illustrant notre propos s’ajoutent des décryptages de la sémantique utilisée dans les offres d’emploi publiées, utiles à la compréhension des besoins linguistiques dans un marché du travail plurilingue et international. [less ▲]

Detailed reference viewed: 513 (40 UL)
Full Text
Peer Reviewed
See detailMalliavin calculus for marked binomial processes: portfolio optimisation in the trinomial model and compound Poisson approximation
Halconruy, Hélène UL

E-print/Working paper (2021)

In this paper we develop a stochastic analysis for marked binomial processes, that can be viewed as the discrete analogues of marked Poisson processes. The starting point is the statement of a chaotic ... [more ▼]

In this paper we develop a stochastic analysis for marked binomial processes, that can be viewed as the discrete analogues of marked Poisson processes. The starting point is the statement of a chaotic expansion for square-integrable (marked binomial) functionals, prior to the elaboration of a Markov-Malliavin structure within this framework. We take advantage of the new formalism to deal with two main applications. First, we revisit the Chen-Stein method for the (compound) Poisson approximation which we perform in the paradigm of the built Markov-Malliavin structure, before studying in the second one the problem of portfolio optimisation in the trinomial model. [less ▲]

Detailed reference viewed: 58 (2 UL)
Full Text
See detailGenotype-phenotype correlations in SCN8A-related disorders reveal prognostic and therapeutic implications
Johannesen, Katrine M.; Liu, Yuanyuan; Gjerulfsen, Cathrine E. et al

E-print/Working paper (2021)

We report detailed functional analyses and genotype-phenotype correlations in 433 individuals carrying disease-causing variants in SCN8A, encoding the voltage-gated Na+ channel NaV1.6. Five different ... [more ▼]

We report detailed functional analyses and genotype-phenotype correlations in 433 individuals carrying disease-causing variants in SCN8A, encoding the voltage-gated Na+ channel NaV1.6. Five different clinical subgroups could be identified: 1) Benign familial infantile epilepsy (BFIE) (n=17, normal cognition, treatable seizures), 2) intermediate epilepsy (n=36, mild ID, partially pharmacoresponsive), 3) developmental and epileptic encephalopathy (DEE, n=191, severe ID, majority pharmacoresistant), 4) generalized epilepsy (n=21, mild to moderate ID, frequently with absence seizures), and 5) affected individuals without epilepsy (n=25, mild to moderate ID). Groups 1-3 presented with early-onset (median: four months) focal or multifocal seizures and epileptic discharges, whereas the onset of seizures in group 4 was later (median: 39 months) with generalized epileptic discharges. The epilepsy was not classifiable in 143 individuals. We performed functional studies expressing missense variants in ND7/23 neuroblastoma cells and primary neuronal cultures using recombinant tetrodotoxin insensitive human NaV1.6 channels and whole-cell patch clamping. Two variants causing DEE showed a strong gain-of-function (GOF, hyperpolarising shift of steady-state activation, strongly increased neuronal firing rate), and one variant causing BFIE or intermediate epilepsy showed a mild GOF (defective fast inactivation, less increased firing). In contrast, all three variants causing generalized epilepsy induced a loss-of-function (LOF, reduced current amplitudes, depolarising shift of steady-state activation, reduced neuronal firing). Including previous studies, functional effects were known for 165 individuals. All 133 individuals carrying GOF variants had either focal (76, groups 1-3), or unclassifiable epilepsy (37), whereas 32 with LOF variants had either generalized (14), no (11) or unclassifiable (5) epilepsy; only two had DEE. Computational modeling in the GOF group revealed a significant correlation between the severity of the electrophysiological and clinical phenotypes. GOF variant carriers responded significantly better to sodium channel blockers (SCBs) than to other anti-seizure medications, and the same applied for all individuals of groups 1-3.In conclusion, our data reveal clear genotype-phenotype correlations between age at seizure onset, type of epilepsy and gain- or loss-of-function effects of SCN8A variants. Generalized epilepsy with absence seizures is the main epilepsy phenotype of LOF variant carriers and the extent of the electrophysiological dysfunction of the GOF variants is a main determinant of the severity of the clinical phenotype in focal epilepsies. Our pharmacological data indicate that SCBs present a therapeutic treatment option in early onset SCN8A-related focal epilepsy. [less ▲]

Detailed reference viewed: 249 (0 UL)
See detailSustainable Finance Law: The EU Paradigm and the Way Forward
Alexandraki, Chrysa UL

E-print/Working paper (2021)

Detailed reference viewed: 102 (2 UL)
Full Text
See detailEmbedding Intelligence in Materials for Responsive Built Environment using Liquid Crystal Elastomer Actuators and Sensors
Schwartz, Mathew; Lagerwall, Jan UL

E-print/Working paper (2021)

Liquid Crystal Elastomers (LCEs) are an exciting category of material that has tremendous application potential across a variety of fields, owing to their unique properties that enable both sensing and ... [more ▼]

Liquid Crystal Elastomers (LCEs) are an exciting category of material that has tremendous application potential across a variety of fields, owing to their unique properties that enable both sensing and actuation. To some, LCEs are simply another type of Shape Memory Polymer, while to others they are an interesting on-going scientific experiment. In this visionary article, we bring an interdisciplinary discussion around creative and impactful ways that LCEs can be applied in the Built Environment to support kinematic and kinetic buildings and situational awareness. We focus particularly on the autonomy made possible by using LCEs, potentially removing needs for motors, wiring and tubing, and even enabling fully independent operation in response to natural environment variations, requiring no power sources. To illustrate the potential, we propose a number of concrete application scenarios where LCEs could offer innovative solutions to problems of great societal importance, such as autonomous active ventilation, heliotropic solar panels systems which can also remove snow or sand autonomously, and invisible coatings with strain mapping functionality, alerting residents in case of dangerous (static or dynamic) loads on roofs or windows, as well as assisting building safety inspection teams after earthquakes. [less ▲]

Detailed reference viewed: 75 (0 UL)
Full Text
See detailAdaptively Secure Laconic Function Evaluation for NC1
Agrawal, Shweta; Rosie, Razvan UL

E-print/Working paper (2021)

Detailed reference viewed: 164 (31 UL)
See detailDemocratic Legitimacy of the Single Resolution Board: Is Legality the Right Question?
Mendes, Joana UL

E-print/Working paper (2021)

The choice to entrust EU banking resolution to an independent body opened the familiar democratic legitimacy conundrum that besets independent institutions in national and in EU law. This paper examines ... [more ▼]

The choice to entrust EU banking resolution to an independent body opened the familiar democratic legitimacy conundrum that besets independent institutions in national and in EU law. This paper examines both the conventional view on the relationship between legality control and democratic legitimacy, that the German Federal Constitutional Court endorsed in its SSM/SRM judgment, and the limits of such conception. Conceived as a “compensatory measure”, legal protection through judicial review and internal administrative review enables the Court to bring independent institutions within the (national) constitutional framework that they strain. Law’s binding character becomes a matter of ensuring not only the rule of law but also democracy. Yet, even detailed legal mandates cannot preclude administrative bodies to define the way law is completed and concretised. While the Court does not adhere to a ‘transmission-belt model’ of administrations, not surprisingly – as a court deciding on democratic legitimacy – it falls short of recognising that legality can do very little to ground the democratic legitimacy of fundamental political choices, such as those entrusted to the Single Resolution Board. [less ▲]

Detailed reference viewed: 123 (3 UL)
Peer Reviewed
See detailDigitalisierung von Schule und Digitalisierung im Unterricht
Harion, Dominic UL; Pause, Johannes UL

E-print/Working paper (2021)

Detailed reference viewed: 125 (9 UL)
See detailAssange’s Extradition: Status Pending
Kafteranis, Dimitrios UL; Andreadakis, Stelios

E-print/Working paper (2021)

Detailed reference viewed: 28 (1 UL)
See detailAddressing Hate Speech with Data Science: An Overview from Computer Science Perspective
Lenzini, Gabriele UL; Srba; Pikuliak, Matus et al

E-print/Working paper (2021)

From a computer science perspective, addressing on-line hate speech is a challenging task that is attracting the attention of both industry (mainly social media platform owners) and academia. In this ... [more ▼]

From a computer science perspective, addressing on-line hate speech is a challenging task that is attracting the attention of both industry (mainly social media platform owners) and academia. In this chapter, we provide an overview of state-of-the-art data-science approaches - how they define hate speech, which tasks they solve to mitigate the phenomenon, and how they address these tasks. We limit our investigation mostly to (semi-)automatic detection of hate speech, which is the task that the majority of existing computer science works focus on. Finally, we summarize the challenges and the open problems in the current data-science research and the future directions in this field. Our aim is to prepare an easily understandable report, capable to promote the multidisciplinary character of hate speech research. Researchers from other domains (e.g., psychology and sociology) can thus take advantage of the knowledge achieved in the computer science domain but also contribute back and help improve how computer science is addressing that urgent an d socially relevant issue which is the prevalence of hate speech in social media. [less ▲]

Detailed reference viewed: 89 (5 UL)
Full Text
See detailLooking for the `Best and Brightest': Hiring difficulties and high-skilled foreign workers
Raux, Morgan UL

E-print/Working paper (2021)

This paper studies the complementarity between domestic and foreign skilled workers. It develops a simple model where employers seek to recruit a foreign worker when finding domestic workers takes more ... [more ▼]

This paper studies the complementarity between domestic and foreign skilled workers. It develops a simple model where employers seek to recruit a foreign worker when finding domestic workers takes more time. This paper confirms the predictions of the model. I rely on a within-firm within-occupation identification strategy to compare recruitment decisions made by a given employer for similar positions that differ in job posting duration. To identify this relationship, I have collected and assembled a new and original dataset at the job level. I match online job postings to administrative data on labor condition applications (LCAs) submitted as the first step in applying for H-1B temporary skilled worker visas. I find that employers are 28 percent more likely to submit an LCA when the job posting duration is one standard deviation longer. I provide evidence suggesting that this phenomenon is due to insufficient domestic labor supply in these occupations. [less ▲]

Detailed reference viewed: 211 (27 UL)
Full Text
See detailIntroducing the COVID-19 crisis Special Education Needs Coping Survey
Dukes, Daniel; Van Herwegen, Jo; Alessandri, Michael et al

E-print/Working paper (2021)

Individuals with special education needs have been particularly affected by the COVID-19 pandemic as they have been shown to be at high risk of losing medical and institutional support at a time when ... [more ▼]

Individuals with special education needs have been particularly affected by the COVID-19 pandemic as they have been shown to be at high risk of losing medical and institutional support at a time when people are being asked to stay isolated, suffering increased anxiety and depression as a consequence. Their families have often found themselves under tremendous pressure to provide support, engendering financial hardship, and physical and emotional strains. In such times, it is vital that international collaborations assess the impact on the individuals and their families, affording the opportunity to make national and international comparisons of how people have coped and what needs to be done to optimize the measures taken by families, associations and governments. This paper introduces one such collaboration. [less ▲]

Detailed reference viewed: 94 (5 UL)
See detailWhich Factors Play a Role in Coco Issuance? Evidence from European Banks.
Wolff, Christian UL

E-print/Working paper (2021)

Detailed reference viewed: 83 (7 UL)
Full Text
See detailHierarchical a posteriori error estimation of Bank-Weiser type in the FEniCS Project
Bulle, Raphaël UL; Hale, Jack UL; Lozinski, Alexei et al

E-print/Working paper (2021)

In the seminal paper of Bank and Weiser [Math. Comp., 44 (1985), pp.283-301] a new a posteriori estimator was introduced. This estimator requires the solution of a local Neumann problem on every cell of ... [more ▼]

In the seminal paper of Bank and Weiser [Math. Comp., 44 (1985), pp.283-301] a new a posteriori estimator was introduced. This estimator requires the solution of a local Neumann problem on every cell of the finite element mesh. Despite the promise of Bank-Weiser type estimators, namely locality, computational efficiency, and asymptotic sharpness, they have seen little use in practical computational problems. The focus of this contribution is to describe a novel implementation of hierarchical estimators of the Bank-Weiser type in a modern high-level finite element software with automatic code generation capabilities. We show how to use the estimator to drive (goal-oriented) adaptive mesh refinement and to mixed approximations of the nearly-incompressible elasticity problems. We provide comparisons with various other used estimators. An open-source implementation based on the FEniCS Project finite element software is provided as supplementary material. [less ▲]

Detailed reference viewed: 92 (12 UL)
Full Text
See detailPanic? Probing Angst over Immigration and Crime
Mahe, Clotilde UL; Parra-Cely, Sergio

E-print/Working paper (2021)

We examine empirically whether immigration affects crime in an emerging country, Ecuador. We exploit the fact that immigration flows of Venezuelans suddenly evolved from voluntary to forced, and occurred ... [more ▼]

We examine empirically whether immigration affects crime in an emerging country, Ecuador. We exploit the fact that immigration flows of Venezuelans suddenly evolved from voluntary to forced, and occurred disproportionately along land borders. We use nationally representative administrative and survey data to precisely estimate an economically null effect of Venezuelan immigration on property and violent crime. We also show that natives are more likely to believe that immigration worsens the economy, despite clear evidence of negative labour market impact due to recent Venezuelan inflows. Results confirm that fears over immigration and crime are not necessarily supported by facts. [less ▲]

Detailed reference viewed: 194 (20 UL)
Full Text
See detailCloturing Deliberation
Anesi, Vincent UL; Safronov, Mikhail

E-print/Working paper (2021)

We study how the institutional arrangements for ending deliberation --- the "cloture rules" --- interact with collective learning to affect the outcomes of decision making in committees. In contrast to ... [more ▼]

We study how the institutional arrangements for ending deliberation --- the "cloture rules" --- interact with collective learning to affect the outcomes of decision making in committees. In contrast to much of the previous literature on deliberative commit tees, this paper makes a distinction between the final votes over policy proposals and the cloture votes that bring them about. Using this approach, we explore how cloture rules influence the course of deliberation, the likelihood of inefficient deliberative outcomes, the circumstances surrounding failures to bring proposals to a final vote, and the distribution of power among committee members in the deliberative process. We also use our simple model to examine the issue of the stability of cloture rules, characterizing the rules that no coalition of committee members is able or willing to overturn. We show in particular that all cloture rules are dynamically stable. [less ▲]

Detailed reference viewed: 265 (26 UL)
Full Text
See detailCultural differences and immigrants' wages
Raux, Morgan UL

E-print/Working paper (2021)

In this paper, I investigate how cultural differences affect the labor-market performance of immigrant workers in Germany. I document a negative relationship between hourly wages and the cultural distance ... [more ▼]

In this paper, I investigate how cultural differences affect the labor-market performance of immigrant workers in Germany. I document a negative relationship between hourly wages and the cultural distance between immigrants' countries of origin and Germany. This result is robust across the three main indicators used in the gravity literature: linguistic, religious, and genetic distances. This cultural wage penalty disappears after five to ten years spent in Germany. Controlling for language proficiency as well as for selective in- and out-migration, these results highlight the cultural integration of immigrant workers. I finally provide evidence suggesting that lower wage progression may be explained by fewer job-to-job transitions. [less ▲]

Detailed reference viewed: 247 (26 UL)
Full Text
Peer Reviewed
See detailA Robustness Check to Multiple Overlapping Deprivation Analysis (MODA) Methodology: The Case of Nigeria
Fagbeja, Teju; Cebotari, Victor UL

E-print/Working paper (2021)

Detailed reference viewed: 26 (0 UL)
Full Text
Peer Reviewed
See detailSchool-Related Violence in Latin America and the Caribbean: Building an Evidence Base for Stronger Schools
Chávez, Cirenia; Cebotari, Victor UL; José Benítez, Maria et al

E-print/Working paper (2021)

Detailed reference viewed: 25 (0 UL)
Full Text
See detailhttps://arxiv.org/abs/2101.07083
El Emam, Christian UL; Seppi, Andrea

E-print/Working paper (2021)

We prove that any minimal Lagrangian diffeomorphism between two closed spherical surfaces with cone singularities is an isometry, without any assumption on the multiangles of the two surfaces. As an ... [more ▼]

We prove that any minimal Lagrangian diffeomorphism between two closed spherical surfaces with cone singularities is an isometry, without any assumption on the multiangles of the two surfaces. As an application, we show that every branched immersion of a closed surface of constant positive Gaussian curvature in Euclidean three-space is a branched covering onto a round sphere, thus generalizing the classical rigidity theorem of Liebmann to branched immersions. [less ▲]

Detailed reference viewed: 74 (1 UL)
Peer Reviewed
See detailPestepidemien in Luxemburg
Pauly, Michel UL

E-print/Working paper (2021)

Detailed reference viewed: 90 (0 UL)
See detailOn the Weyl problem for complete surfaces in the hyperbolic and anti-de Sitter spaces
Schlenker, Jean-Marc UL

E-print/Working paper (2021)

The classical Weyl problem (solved by Lewy, Alexandrov, Pogorelov, and others) asks whether any metric of curvature K≥0 on the sphere is induced on the boundary of a unique convex body in $\R^3$. The ... [more ▼]

The classical Weyl problem (solved by Lewy, Alexandrov, Pogorelov, and others) asks whether any metric of curvature K≥0 on the sphere is induced on the boundary of a unique convex body in $\R^3$. The answer was extended to surfaces in hyperbolic space by Alexandrov in the 1950s, and a ``dual'' statement, describing convex bodies in terms of the third fundamental form of their boundary (e.g. their dihedral angles, for an ideal polyhedron) was later proved. We describe three conjectural generalizations of the Weyl problem in $\HH^3$ and its dual to unbounded convex subsets and convex surfaces, in ways that are relevant to contemporary geometry since a number of recent results and well-known open problems can be considered as special cases. One focus is on convex domain having a ``thin'' asymptotic boundary, for instance a quasicircle -- this part of the problem is strongly related to the theory of Kleinian groups. A second direction is towards convex subsets with a ``thick'' ideal boundary, for instance a disjoint union of disks -- here one find connections to problems in complex analysis, such as the Koebe circle domain conjecture. A third direction is towards complete, convex disks of infinite area in $\HH^3$ and surfaces in hyperbolic ends -- with connections to questions on circle packings or grafting on the hyperbolic disk. Similar statements are proposed in anti-de Sitter geometry, a Lorentzian cousin of hyperbolic geometry where interesting new phenomena can occur, and in Minkowski and Half-pipe geometry. We also collect some partial new results mostly based on recent works. [less ▲]

Detailed reference viewed: 47 (0 UL)
Full Text
Peer Reviewed
See detailOptimal convergence rates for the invariant density estimation of jump-diffusion processes
Amorino, Chiara UL; Nualart, Eulalia

E-print/Working paper (2021)

We aim at estimating the invariant density associated to a stochastic differential equation with jumps in low dimension, which is for d = 1 and d = 2. We consider a class of jump diffusion processes whose ... [more ▼]

We aim at estimating the invariant density associated to a stochastic differential equation with jumps in low dimension, which is for d = 1 and d = 2. We consider a class of jump diffusion processes whose invariant density belongs to some Hölder space. Firstly, in dimension one, we show that the kernel density estimator achieves the convergence rate 1/T, which is the optimal rate in the absence of jumps. This improves the convergence rate obtained in [Amorino, Gloter (2021)], which depends on the Blumenthal-Getoor index for d = 1 and is equal to log T/T for d = 2. Secondly, we show that is not possible to find an estimator with faster rates of estimation. Indeed, we get some lower bounds with the same rates { 1/T , log T/T } in the mono and bi-dimensional cases, respectively. Finally, we obtain the asymptotic normality of the estimator in the one-dimensional case. [less ▲]

Detailed reference viewed: 52 (6 UL)
Full Text
See detailDiversity, National Identity, and Political Participation among Young People in Luxembourg
Procopio, Alessandro UL; Schomaker, Léa UL; Samuel, Robin UL

E-print/Working paper (2021)

Luxembourg is known for its cultural and national diversity. Approximately 48 of the population is foreigners live in Luxembourg. For 15-29-year-olds, this share was approximately 42 in 2019 and 2020 ... [more ▼]

Luxembourg is known for its cultural and national diversity. Approximately 48 of the population is foreigners live in Luxembourg. For 15-29-year-olds, this share was approximately 42 in 2019 and 2020. Furthermore, approximately 185,000 foreign workers commute to Luxembourg daily. Considering this, Luxembourg is an interesting case for investigating national identity and political participation of a diverse society (STATEC 2020a, STATEC 2020b, STATEC 2021). Especially, as the biographies of young people in Luxembourg are becoming increasingly complex (e.g., mixed national parents; highly skilled expatriates), it is worth looking into different aspects and valuations of national identity and political participation of youth in Luxembourg (Amtépé and Hartmann-Hirsch, 2011). In this policy report, we look into the aspects of national identity and how young people living in Luxembourg define a ‘real Luxembourger’ using the Youth Survey Luxembourg (2019) data (Sozio et al., 2020). This will give us the opportunity to investigate what aspects of identity (e.g. Luxembourgish ancestry; the time spent living in Luxembourg) matter for young people to feel part of Luxembourgish society and how these change across different social backgrounds and demographics. The discourse about the interrelations of political participation and youth brings forward the dominant narrative of a disengaging and passive youth. Here, we also investigate these statements in the Luxembourgish context. We analyse the level of interest in politics across young people in Luxembourg and their means of political participation. Finally, we especially investigated the relationship between aspects of national identity, and political interest and engagement of young people in Luxembourg. [less ▲]

Detailed reference viewed: 108 (25 UL)
Full Text
Peer Reviewed
See detailTax competition and phantom FDI
Zanaj, Skerdilajda UL

E-print/Working paper (2021)

Detailed reference viewed: 296 (43 UL)
Full Text
See detailDynamic Universal Accumulator with Batch Update over Bilinear Groups
Vitto, Giuseppe UL; Biryukov, Alexei UL

E-print/Working paper (2021)

Detailed reference viewed: 30 (1 UL)
Full Text
Peer Reviewed
See detailAll in one stroke? Intervention Spaces for Dark Patterns
Rossi, Arianna UL; Bongard, Kerstin UL

E-print/Working paper (2021)

This position paper draws from the complexity of dark patterns to develop arguments for differentiated interventions. We propose a matrix of interventions with a \textit{measure axis} (from user-directed ... [more ▼]

This position paper draws from the complexity of dark patterns to develop arguments for differentiated interventions. We propose a matrix of interventions with a \textit{measure axis} (from user-directed to environment-directed) and a \textit{scope axis} (from general to specific). We furthermore discuss a set of interventions situated in different fields of the intervention spaces. The discussions at the 2021 CHI workshop "What can CHI do about dark patterns?" should help hone the matrix structure and fill its fields with specific intervention proposals. [less ▲]

Detailed reference viewed: 120 (10 UL)
Full Text
See detailResearch Frameworks in Comparative Public Law: Law as Category, as Source and as Variable
Hofmann, Herwig UL

E-print/Working paper (2021)

This chapter outlines some basic approaches to identifying frameworks of comparative research. It first argues that establishing comparative frameworks is a task ubiquitous to legal methodology. The ... [more ▼]

This chapter outlines some basic approaches to identifying frameworks of comparative research. It first argues that establishing comparative frameworks is a task ubiquitous to legal methodology. The framework is the decisive factor identifying the comparators and allowing assessment of similarities and differences. The framework allows identification of what to compare, how many commonalities the comparators have to start with, and how ‘foreign’ the two elements subject to comparison may be, so as to facilitate meaningful comparison. The chapter thus shows how comparative frameworks are flexible in serving the objectives defined by comparative scholars. This fluid feature of the framework of comparison and the relatively ubiquitous nature of the comparative method is the backdrop to the discussions in this chapter, critically reviewing three major frameworks identified by the objectives of the comparative approach: law as ‘category’, as ‘source’, and as ‘variable’. [less ▲]

Detailed reference viewed: 80 (1 UL)
See detailHow Many Replicators Does It Take to Achieve Reliability? Investigating Researcher Variability in a Crowdsourced Replication
Breznau, Nate; Rinke, Eike Mark; Wuttke, Alexander et al

E-print/Working paper (2021)

The paper reports findings from a crowdsourced replication. Eighty-four replicator teams attempted to verify results reported in an original study by running the same models with the same data. The ... [more ▼]

The paper reports findings from a crowdsourced replication. Eighty-four replicator teams attempted to verify results reported in an original study by running the same models with the same data. The replication involved an experimental condition. A “transparent” group received the original study and code, and an “opaque” group received the same underlying study but with only a methods section and description of the regression coefficients without size or significance, and no code. The transparent group mostly verified the original study (95.5%), while the opaque group had less success (89.4%). Qualitative investigation of the replicators’ workflows reveals many causes of non-verification. Two categories of these causes are hypothesized, routine and non-routine. After correcting non-routine errors in the research process to ensure that the results reflect a level of quality that should be present in ‘real-world’ research, the rate of verification was 96.1 in the transparent group and 92.4 in the opaque group. Two conclusions follow: (1) Although high, the verification rate suggests that it would take a minimum of three replicators per study to achieve replication reliability of at least 95 confidence assuming ecological validity in this controlled setting, and (2) like any type of scientific research, replication is prone to errors that derive from routine and undeliberate actions in the research process. The latter suggests that idiosyncratic researcher variability might provide a key to understanding part of the “reliability crisis” in social and behavioral science and is a reminder of the importance of transparent and well documented workflows. [less ▲]

Detailed reference viewed: 72 (5 UL)
Full Text
See detailMachine learning in the social and health sciences
Leist, Anja UL; Klee, Matthias UL; Kim, Jung Hyun UL et al

E-print/Working paper (2021)

The uptake of machine learning (ML) approaches in the social and health sciences has been rather slow, and research using ML for social and health research questions remains fragmented. This may be due to ... [more ▼]

The uptake of machine learning (ML) approaches in the social and health sciences has been rather slow, and research using ML for social and health research questions remains fragmented. This may be due to the separate development of research in the computational/data versus social and health sciences as well as a lack of accessible overviews and adequate training in ML techniques for non data science researchers. This paper provides a meta-mapping of research questions in the social and health sciences to appropriate ML approaches, by incorporating the necessary requirements to statistical analysis in these disciplines. We map the established classification into description, prediction, and causal inference to common research goals, such as estimating prevalence of adverse health or social outcomes, predicting the risk of an event, and identifying risk factors or causes of adverse outcomes. This meta-mapping aims at overcoming disciplinary barriers and starting a fluid dialogue between researchers from the social and health sciences and methodologically trained researchers. Such mapping may also help to fully exploit the benefits of ML while considering domain-specific aspects relevant to the social and health sciences, and hopefully contribute to the acceleration of the uptake of ML applications to advance both basic and applied social and health sciences research. [less ▲]

Detailed reference viewed: 98 (15 UL)
Full Text
See detailBreaking the $IKEp182 Challenge
Udovenko, Aleksei UL; Vitto, Giuseppe UL

E-print/Working paper (2021)

We report a break of the \$IKEp182 challenge using a meet-in-the-middle attack strategy improved with multiple SIKE-specific optimizations. The attack was executed on the HPC cluster of the University of ... [more ▼]

We report a break of the \$IKEp182 challenge using a meet-in-the-middle attack strategy improved with multiple SIKE-specific optimizations. The attack was executed on the HPC cluster of the University of Luxembourg and required less than 10 core-years and 256TiB of high-performance network storage (GPFS). Different trade-offs allow execution of the attack with similar time complexity and reduced storage requirements of only about 70TiB. [less ▲]

Detailed reference viewed: 40 (2 UL)
See detailGaussian approximation for sums of region-stabilizing scores
Bhattacharjee, Chinmoy UL; Molchanov, Ilya

E-print/Working paper (2021)

Detailed reference viewed: 45 (2 UL)
Full Text
See detailA Principles-based Approach to the Governance of BigFintechs
Zetzsche, Dirk Andreas UL; Arner, Douglas; Buckley, Ross et al

E-print/Working paper (2021)

Detailed reference viewed: 30 (1 UL)
See detailOptical properties of topological flat and dispersive bands
Habibi, Alireza UL; Musthofa, Ahmad Z.; Adibi, Elaheh et al

E-print/Working paper (2021)

We study the optical properties of topological flat and dispersive bands. Due to their topological nature, there exists an anomalous Hall response which gives rise to a transverse current without applied ... [more ▼]

We study the optical properties of topological flat and dispersive bands. Due to their topological nature, there exists an anomalous Hall response which gives rise to a transverse current without applied magnetic field. The dynamical Hall conductivity of systems with flat bands exhibits a sign change when the excitation energy is on resonance with the band gap, similar to the magnetotransport Hall conductivity profile. The sign change of the Hall conductivity is located at the frequency corresponding to the singularity of the joint density of states, i.e., the van Hove singularity (VHS). For perfectly flat bands, this VHS energy matches the band gap. On the other hand, in the case of dispersive bands, the VHS energy is located above the band gap. As a result, the two features of the Hall conductivity, i.e., the resonant feature at the band gap and the sign change at the VHS energy, become separated. This anomalous Hall response rotates the polarization of an electric field and can be detected in the reflected and transmitted waves, as Kerr and Faraday rotations, respectively, thus allowing a simple optical characterization of topological flat bands. [less ▲]

Detailed reference viewed: 49 (7 UL)
Full Text
See detailThe role of score and information bias in panel data likelihoods
Schumann, Martin; Severini, Thomas A.; Tripathi, Gautam UL

E-print/Working paper (2021)

Detailed reference viewed: 167 (50 UL)
Full Text
See detailEuropean Border Region Studies in Times of Borderization
Wille, Christian UL

E-print/Working paper (2021)

The text originates from a time of borderization, at global level and at the EU’s internal borders. At the latest since covidfencing began in the spring of 2020, many Europeans have become familiar with ... [more ▼]

The text originates from a time of borderization, at global level and at the EU’s internal borders. At the latest since covidfencing began in the spring of 2020, many Europeans have become familiar with border experiences and the practices of civic contestation of borders. With that in mind, the text argues that it is necessary to open European border region studies to the contestation of borders, for which it should enter into dialogue with international (and critical) border studies. [less ▲]

Detailed reference viewed: 119 (3 UL)
Full Text
See detailAdversarial Robustness in Multi-Task Learning: Promises and Illusions
Ghamizi, Salah UL; Cordy, Maxime UL; Papadakis, Mike UL et al

E-print/Working paper (2021)

Vulnerability to adversarial attacks is a well-known weakness of Deep Neural networks. While most of the studies focus on single-task neural networks with computer vision datasets, very little research ... [more ▼]

Vulnerability to adversarial attacks is a well-known weakness of Deep Neural networks. While most of the studies focus on single-task neural networks with computer vision datasets, very little research has considered complex multi-task models that are common in real applications. In this paper, we evaluate the design choices that impact the robustness of multi-task deep learning networks. We provide evidence that blindly adding auxiliary tasks, or weighing the tasks provides a false sense of robustness. Thereby, we tone down the claim made by previous research and study the different factors which may affect robustness. In particular, we show that the choice of the task to incorporate in the loss function are important factors that can be leveraged to yield more robust models. [less ▲]

Detailed reference viewed: 115 (8 UL)
See detailA Mixture of Generative Models Strategy Helps Humans Generalize across Tasks
Herce Castañón, Santiago; Cardoso-Leite, Pedro UL; Altarelli, Irene et al

E-print/Working paper (2021)

What role do generative models play in generalization of learning in humans? Our novel multi-task prediction paradigm—where participants complete four sequence learning tasks, each being a different ... [more ▼]

What role do generative models play in generalization of learning in humans? Our novel multi-task prediction paradigm—where participants complete four sequence learning tasks, each being a different instance of a common generative family—allows the separate study of within-task learning (i.e., finding the solution to each of the tasks), and across-task learning (i.e., learning a task differently because of past experiences). The very first responses participants make in each task are not yet affected by within-task learning and thus reflect their priors. Our results show that these priors change across successive tasks, increasingly resembling the underlying generative family. We conceptualize multi-task learning as arising from a mixture-of-generative-models learning strategy, whereby participants simultaneously entertain multiple candidate models which compete against each other to explain the experienced sequences. This framework predicts specific error patterns, as well as a gating mechanism for learning, both of which are observed in the data. [less ▲]

Detailed reference viewed: 55 (5 UL)
Full Text
See detailRedefining resilience: Integrative review and development of an assessment tool
Mantin, Binyamin UL

E-print/Working paper (2021)

Detailed reference viewed: 114 (17 UL)
Full Text
See detailFrom Centralized to Decentralized Finance: The Issue of “Fake-DeFi”
Zetzsche, Dirk Andreas UL; Anker-Sorensen, Linn

E-print/Working paper (2021)

Detailed reference viewed: 49 (3 UL)
See detailMobilome-driven segregation of the resistome in biological wastewater treatment 2021.11.15.468621
de Nies, Laura UL; Busi, Susheel Bhanu UL; Kunath, Benoit Josef et al

E-print/Working paper (2021)

Biological wastewater treatment plants (BWWTP) are considered to be hotspots of evolution and subsequent spread of antimicrobial resistance (AMR). Mobile genetic elements (MGEs) promote the mobilization ... [more ▼]

Biological wastewater treatment plants (BWWTP) are considered to be hotspots of evolution and subsequent spread of antimicrobial resistance (AMR). Mobile genetic elements (MGEs) promote the mobilization and dissemination of antimicrobial resistance genes (ARGs) and are thereby critical mediators of AMR within the BWWTP microbial community. At present, it is unclear whether specific AMR categories are differentially disseminated via bacteriophages (phages) or plasmids. To understand the segregation of AMR in relation to MGEs, we analyzed meta-omic (metagenomic, metatranscriptomic and metaproteomic) data systematically collected over 1.5 years from a BWWTP. Our results showed a core group of fifteen AMR categories which were found across all timepoints. Some of these AMR categories were disseminated exclusively (bacitracin) or primarily (aminoglycoside, MLS, sulfonamide) via plasmids or phages (fosfomycin and peptide), whereas others were disseminated equally by both MGEs. Subsequent expression- and protein-level analyses further demonstrated that aminoglycoside, bacitracin and sulfonamide resistance genes were expressed more by plasmids, in contrast to fosfomycin and peptide AMR expression by phages, thereby validating our genomic findings. Longitudinal assessment further underlined these findings whereby the log2-fold changes of aminoglycoside, bacitracin and sulfonamide resistance genes were increased in plasmids, while fosfomycin and peptide resistance showed similar trends in phages. In the analyzed communities, the dominant taxon Candidatus Microthrix parvicella was a major contributor to several AMR categories whereby its plasmids primarily mediated aminoglycoside resistance. Importantly, we also found AMR associated with ESKAPEE pathogens within the BWWTP, for which MGEs also contributed differentially to the dissemination of ARGs. Collectively our findings pave the way towards understanding the segmentation of AMR within MGEs, thereby shedding new light on resistome populations and their mediators, essential elements that are of immediate relevance to human health.Competing Interest StatementThe authors have declared no competing interest. [less ▲]

Detailed reference viewed: 63 (6 UL)
Full Text
See detailThe Hidden Lattice Problem
Notarnicola, Luca UL; Wiese, Gabor UL

E-print/Working paper (2021)

We consider the problem of revealing a small hidden lattice from the knowledge of a low-rank sublattice modulo a given sufficiently large integer -- the {\em Hidden Lattice Problem}. A central motivation ... [more ▼]

We consider the problem of revealing a small hidden lattice from the knowledge of a low-rank sublattice modulo a given sufficiently large integer -- the {\em Hidden Lattice Problem}. A central motivation of study for this problem is the Hidden Subset Sum Problem, whose hardness is essentially determined by that of the hidden lattice problem. We describe and compare two algorithms for the hidden lattice problem: we first adapt the algorithm by Nguyen and Stern for the hidden subset sum problem, based on orthogonal lattices, and propose a new variant, which we explain to be related by duality in lattice theory. Following heuristic, rigorous and practical analyses, we find that our new algorithm brings some advantages as well as a competitive alternative for algorithms for problems with cryptographic interest, such as Approximate Common Divisor Problems, and the Hidden Subset Sum Problem. Finally, we study variations of the problem and highlight its relevance to cryptanalysis. [less ▲]

Detailed reference viewed: 44 (0 UL)
Full Text
See detailOn generalized Iwasawa main conjectures and p-adic Stark conjectures for Artin motives
Maksoud, Alexandre UL

E-print/Working paper (2021)

We continue the study of Selmer groups associated with an Artin representation endowed with a p-stabilization which was initiated in arXiv:1811.05368. We formulate a main conjecture and an extra zeros ... [more ▼]

We continue the study of Selmer groups associated with an Artin representation endowed with a p-stabilization which was initiated in arXiv:1811.05368. We formulate a main conjecture and an extra zeros conjecture at all unramified odd primes p, which are shown to imply the p-part of the Tamagawa number conjecture for Artin motives at s=0. We also relate our new conjectures with various cyclotomic Iwasawa main conjectures and p-adic Stark conjectures that appear in the literature. In particular, they provide a natural interpretation for recent conjectures on p-adic L-functions attached to (the adjoint of) a weight one modular form. In the case of monomial representations, we prove that our conjectures are essentially equivalent to some newly introduced Iwasawa-theoretic conjectures for Rubin-Stark elements. [less ▲]

Detailed reference viewed: 77 (0 UL)
Full Text
See detailProjected Inventory Level Policies for Lost Sales Inventory Systems: Asymptotic Optimality in Two Regimes
van Jaarsveld, Willem; Arts, Joachim UL

E-print/Working paper (2021)

Detailed reference viewed: 69 (7 UL)
Full Text
See detailOn deformation quantization of quadratic Poisson structures
Merkoulov (merkulov), Serguei UL; Khoroshkin, Anton

E-print/Working paper (2021)

We study the deformation complex of the dg wheeled properad of Z-graded quadratic Poisson structures and prove that it is quasi-isomorphic to the even M. Kontsevich graph complex. As a first application ... [more ▼]

We study the deformation complex of the dg wheeled properad of Z-graded quadratic Poisson structures and prove that it is quasi-isomorphic to the even M. Kontsevich graph complex. As a first application we show that the Grothendieck-Teichmüller group acts on the genus completion of that wheeled properad faithfully and essentially transitively. As a second application we classify all universal quantizations of Z-graded quadratic Poisson structures together with the underlying (so called) homogeneous formality maps. [less ▲]

Detailed reference viewed: 82 (0 UL)
See detailTowards AI Logic for Social Reasoning
Dong, Huimin; Markovich, Réka UL; van der Torre, Leon UL

E-print/Working paper (2021)

Artificial Intelligence (AI) logic formalizes the reasoning of intelligent agents. In this paper, we discuss how an argumentation-based AI logic could be used also to formalize important aspects of social ... [more ▼]

Artificial Intelligence (AI) logic formalizes the reasoning of intelligent agents. In this paper, we discuss how an argumentation-based AI logic could be used also to formalize important aspects of social reasoning. Besides reasoning about the knowledge and actions of individual agents, social AI logic can reason also about social dependencies among agents using the rights, obligations and permissions of the agents. We discuss four aspects of social AI logic. First, we discuss how rights represent relations between the obligations and permissions of intelligent agents. Second, we discuss how to argue about the right-to-know, a central issue in the recent discussion of privacy and ethics. Third, we discuss how a wide variety of conflicts among intelligent agents can be identified and (sometimes) resolved by comparing formal arguments. Importantly, to cover a wide range of arguments occurring in daily life, also fallacious arguments can be represented and reasoned about. Fourth, we discuss how to argue about the freedom to act for intelligent agents. Examples from social, legal and ethical reasoning highlight the challenges in developing social AI logic. The discussion of the four challenges leads to a research program for argumentation-based social AI logic, contributing towards the future development of AI logic. [less ▲]

Detailed reference viewed: 38 (1 UL)
Full Text
See detailPost-quantum Efficient Proof for Graph 3-Coloring Problem
Ebrahimi, Ehsan UL

E-print/Working paper (2021)

Detailed reference viewed: 38 (9 UL)
Full Text
See detailMILP modeling of Boolean functions by minimum number of inequalities
Udovenko, Aleksei UL

E-print/Working paper (2021)

Detailed reference viewed: 27 (0 UL)
Full Text
See detailLes pratiques du quotidien transfrontalières dans la Grande Région SaarLorLux
Wille, Christian UL; Caruso, Geoffrey UL; Helfer, Malte UL et al

E-print/Working paper (2021)

This contribution deals with the daily cross-border practices of the inhabitants of Saarland, Lorraine, Luxembourg, Rhineland-Palatinate and Wallonia. It will deal with various aspects of unquestioned ... [more ▼]

This contribution deals with the daily cross-border practices of the inhabitants of Saarland, Lorraine, Luxembourg, Rhineland-Palatinate and Wallonia. It will deal with various aspects of unquestioned activities that are regularly carried out in a country other than the country of residence. The dimension of regular physical mobility in a transnational perspective will have to be integrated into this analysis insofar as cross-border everyday practices represent routine activities associated with a circular (pendular) movement that extends beyond neighbouring national territories. From this point of view, it should be emphasised that the Greater Region SaarLorLux is already experiencing pronounced cross-border mobility phenomena: mobility in the context of employment and in the context of residential migration. [less ▲]

Detailed reference viewed: 40 (0 UL)
See detailObserving Many Researchers Using the Same Data and Hypothesis Reveals a Hidden Universe of Uncertainty
Breznau, Nate; Rinke, Eike Mark; Wuttke, Alexander et al

E-print/Working paper (2021)

How does noise generated by researcher decisions undermine the credibility of science? We test this by observing all decisions made among 73 research teams as they independently conduct studies on the ... [more ▼]

How does noise generated by researcher decisions undermine the credibility of science? We test this by observing all decisions made among 73 research teams as they independently conduct studies on the same hypothesis with identical starting data. We find excessive variation of outcomes. When combined, the 107 observed research decisions taken across teams explained at most 2.6 of the total variance in effect sizes and 10 of the deviance in subjective conclusions. Expertise, prior beliefs and attitudes of the researchers explain even less. Each model deployed to test the hypothesis was unique, which highlights a vast universe of research design variability that is normally hidden from view and suggests humility when presenting and interpreting scientific findings. [less ▲]

Detailed reference viewed: 74 (5 UL)
Full Text
See detailBatch Learning in Stochastic Dual Dynamic Programming
Avila, Daniel; Papavasiliou, Anthona; Löhndorf, Nils UL

E-print/Working paper (2021)

Detailed reference viewed: 23 (1 UL)
See detailThe Seventh International Olympiad in Cryptography NSUCRYPTO: problems and solutions
Gorodilova, Anastasiya; Tokareva, Natalia N.; Agievich, Sergey et al

E-print/Working paper (2021)

Detailed reference viewed: 36 (0 UL)
See detailGlacier-fed stream biofilms harbour diverse resistomes and biosynthetic gene clusters 2021.11.18.469141
Busi, Susheel Bhanu UL; de Nies, Laura UL; Pramateftaki, Paraskevi et al

E-print/Working paper (2021)

Background Antimicrobial resistance (AMR) is a universal phenomenon whose origins lay in natural ecological interactions such as competition within niches, within and between micro- to higher-order ... [more ▼]

Background Antimicrobial resistance (AMR) is a universal phenomenon whose origins lay in natural ecological interactions such as competition within niches, within and between micro- to higher-order organisms. However, the ecological and evolutionary processes shaping AMR need to be better understood in view of better antimicrobial stewardship. Resolving antibiotic biosynthetic pathways, including biosynthetic gene clusters (BGCs), and corresponding antimicrobial resistance genes (ARGs) may therefore help in understanding the inherent mechanisms. However, to study these phenomena, it is crucial to examine the origins of AMR in pristine environments with limited anthropogenic influences. In this context, epilithic biofilms residing in glacier-fed streams (GFSs) are an excellent model system to study diverse, intra- and inter-domain, ecological crosstalk.Results We assessed the resistomes of epilithic biofilms from GFSs across the Southern Alps (New Zealand) and the Caucasus (Russia) and observed that both bacteria and eukaryotes encoded twenty-nine distinct AMR categories. Of these, beta-lactam, aminoglycoside, and multidrug resistance were both abundant and taxonomically distributed in most of the bacterial and eukaryotic phyla. AMR-encoding phyla included Bacteroidota and Proteobacteria among the bacteria, alongside Ochrophyta (algae) among the eukaryotes. Additionally, BGCs involved in the production of antibacterial compounds were identified across all phyla in the epilithic biofilms. Furthermore, we found that several bacterial genera (Flavobacterium, Polaromonas, etc.) including representatives of the superphylum Patescibacteria encode both ARGs and BGCs within close proximity of each other, thereby demonstrating their capacity to simultaneously influence and compete within the microbial community.Conclusions Our findings highlight the presence and abundance of AMR in epilithic biofilms within GFSs. Additionally, we identify their role in the complex intra- and inter-domain competition and the underlying mechanisms influencing microbial survival in GFS epilithic biofilms. We demonstrate that eukaryotes may serve as AMR reservoirs owing to their potential for encoding ARGs. We also find that the taxonomic affiliation of the AMR and the BGCs are congruent. Importantly, our findings allow for understanding how naturally occurring BGCs and AMR contribute to the epilithic biofilms mode of life in GFSs. Importantly, these observations may be generalizable and potentially extended to other environments which may be more or less impacted by human activity.Competing Interest StatementThe authors have declared no competing interest.AMRAntimicrobial resistanceARGsAntimicrobial resistance gene(s)BGCBiosynthetic gene clustersCACaucasusCPRCandidate Phyla radiationGFSsGlacier-fed stream(s)GLGlacierIRS-RSisoleucyl-tRNA synthetase - high resistanceIMPIntegrate Meta-Omics PipelineKEGGKyoto Encyclopedia of Genes and GenomesMAGsMetagenome-assembled genome(s)NRPSNon-ribosomal peptide synthetasesPKSPolyketide synthases (type I and type II)RiPPsPost-translationally modified peptide(s)SASouthern Alps [less ▲]

Detailed reference viewed: 80 (2 UL)
Full Text
Peer Reviewed
See detailInternationalisation (at Home) of the Non-Mobile Youth in Europe outside formal Education
Nienaber, Birte UL; Díaz-Catalán, Celia; Kmiotek, Emilia Alicja UL et al

E-print/Working paper (2021)

Mobility is often mentioned as one main aspect of “internationalisation”. However, little is known about the internationalisation at home of non-mobile young people outside formal higher education. In the ... [more ▼]

Mobility is often mentioned as one main aspect of “internationalisation”. However, little is known about the internationalisation at home of non-mobile young people outside formal higher education. In the post- COVID19- era, mobility might remain limited and immobility becomes the rule. Therefore, internationalisation at home plays an important role in times of restricted mobility. To what extent are non-mobile people internationalised? Which factors favour this internationalisation amongst the non-mobiles? We develop a comprehensive index which empirically tests whether and to what extent non-mobiles, become internationalised at home. The answers of 3431 non-mobiles respondents be-tween 18 and 29 years old from six EU countries are analysed. First, we review the concept “internationalisation at home”. We present an empirical measure of internationalisation at home consisting of three dimensions 1) foreign language skills i.e. Eng-lish; 2) multicultural way of living; 3) information about foreign countries. Linear regression models are used to empirically explain which factors influence the internationalisation at home of the non-mobiles on the individual level, using their socio-demographic and social embed-dedness, as well as controlling for the country level. [less ▲]

Detailed reference viewed: 81 (2 UL)
Full Text
See detailLes reliques des "martyrs de Gorcum" à Bruxelles
Weis, Monique UL; Houssiau, Jean

E-print/Working paper (2021)

Detailed reference viewed: 27 (2 UL)
Full Text
See detailUncertainty-driven symmetry-breaking and stochastic stability in a generic differential game of lobbying
Boucekkine, Raouf; Prieur, Fabien; Ruan, Weihua et al

E-print/Working paper (2021)

We study a 2-players stochastic differential game of lobbying. Players have opposite interests; at any date, each player invests in lobbying activities to alter the legislation, the continuous state ... [more ▼]

We study a 2-players stochastic differential game of lobbying. Players have opposite interests; at any date, each player invests in lobbying activities to alter the legislation, the continuous state variable of the game, in her own benefit. The payoffs are quadratic and uncertainty is driven by a Wiener process. We prove that while a symmetric Markov Perfect Equilibrium (MPE) always exists, (two) asymmetric MPE only emerge when uncertainty is large enough. In the latter case, the legislative state converges to a stationary invariant distribution. We fully characterize existence and stochastic stability of the legislative state for both types of MPE. We finally study the implications for rent dissipation asymptotically. We show in particular that while the average rent dissipation is lower with asymmetric equilibria relative to the symmetric, the former yield larger losses at the most likely asymptotic states for large enough but moderate uncertainty. [less ▲]

Detailed reference viewed: 147 (18 UL)
Full Text
See detailGDAP1 loss of function inhibits the mitochondrial pyruvate dehydrogenase complex by altering the actin cytoskeleton 2021.03.04.433895
Wolf, Christina; Pouya, Alireza; Bitar, Sara et al

E-print/Working paper (2021)

Charcot-Marie-Tooth (CMT) disease 4A is an autosomal-recessive polyneuropathy caused by mutations of ganglioside-induced differentiation-associated protein 1 (GDAP1), a putative glutathione transferase ... [more ▼]

Charcot-Marie-Tooth (CMT) disease 4A is an autosomal-recessive polyneuropathy caused by mutations of ganglioside-induced differentiation-associated protein 1 (GDAP1), a putative glutathione transferase, which affects mitochondrial shape and alters cellular Ca2+ homeostasis. Here, we identify the underlying mechanism. We found that patient-derived motoneurons and GDAP1 knockdown SH-SY5Y cells display two phenotypes: more tubular mitochondria and a metabolism characterized by glutamine dependence and fewer cytosolic lipid droplets. GDAP1 interacts with the actin-depolymerizing protein Cofilin-1 in a redoxdependent manner, suggesting a role for actin signaling. Consistently, GDAP1 loss causes less F-actin close to mitochondria, which restricts mitochondrial localization of the fission factor dynamin-related protein 1, instigating tubularity. Changes in the actin cytoskeleton also disrupt mitochondria-ER contact sites. This results in lower mitochondrial Ca2+ levels and inhibition of the pyruvate dehydrogenase complex, explaining the metabolic changes upon GDAP1 loss of function. Together, these findings reconcile GDAP1-associated phenotypes and implicate disrupted actin signaling in CMT4A pathophysiology. [less ▲]

Detailed reference viewed: 33 (2 UL)
Peer Reviewed
See detailBorder or bordering practice? Changing perspectives on borders and challenges of praxeological approaches
Connor, Ulla UL

E-print/Working paper (2021)

In Border Studies, the ongoing discussions on methodological and theoretical questions have led to the development of transformed approaches and vocabulary for border research. This contribution ... [more ▼]

In Border Studies, the ongoing discussions on methodological and theoretical questions have led to the development of transformed approaches and vocabulary for border research. This contribution highlights the shift from ‘border’ to ‘bordering practice’ and questions its sources in the scientific context, such as the cultural turn and the related practice turn. Despite the popular use of the term ‘practice’ in Border Studies, sociological practice theories are not at the center of the development of dynamic concepts for studying borders. The article emphasizes the compatibility of sociological practice theories with the practice and process orientation in Border Studies. It gives a short overview of praxeological thinking in sociology and identifies methodological challenges for Border Studies targeting the development of praxeological re-search perspectives for borders. [less ▲]

Detailed reference viewed: 93 (7 UL)
Full Text
See detailNonparametric needlet estimation for partial derivatives of a probability density function on the d-torus
Durastanti, Claudio; Turchi, Nicola UL

E-print/Working paper (2021)

Detailed reference viewed: 43 (0 UL)
See detailCentral limit theorem for a birth-growth model with Poisson arrivals and random growth speed.
Bhattacharjee, Chinmoy UL; Molchanov, Ilya; Turin, Riccardo

E-print/Working paper (2021)

Detailed reference viewed: 41 (0 UL)
Full Text
See detailAutomated Truncation of Differential Trails and Trail Clustering in ARX
Biryukov, Alexei UL; Cardoso Dos Santos, Luan UL; Feher, Daniel UL et al

E-print/Working paper (2021)

We propose a tool for automated truncation of differential trails in ciphers using modular addition, bitwise rotation, and XOR (ARX). The tool takes as input a differential trail and produces as output a ... [more ▼]

We propose a tool for automated truncation of differential trails in ciphers using modular addition, bitwise rotation, and XOR (ARX). The tool takes as input a differential trail and produces as output a set of truncated differential trails. The set represents all possible truncations of the input trail according to certain predefined rules. A linear-time algorithm for the exact computation of the differential probability of a truncated trail that follows the truncation rules is proposed. We further describe a method to merge the set of truncated trails into a compact set of non-overlapping truncated trails with associated probability and we demonstrate the application of the tool on block cipher Speck64. We have also investigated the effect of clustering of differential trails around a fixed input trail. The best cluster that we have found for 15 rounds has probability 2^−55.03 (consisting of 389 unique output differences) which allows us to build a distinguisher using 128 times less data than the one based on just the single best trail, which has probability 2^−62. Moreover, we show examples for Speck64 where a cluster of trails around a suboptimal (in terms of probability) input trail results in higher overall probability compared to a cluster obtained around the best differential trail. [less ▲]

Detailed reference viewed: 47 (6 UL)
Full Text
See detailOccurrence and Distribution of Pharmaceuticals and their Transformation Products in Luxembourgish Surface Waters
Singh, Randolph UL; Lai, Adelene UL; Krier, Jessy UL et al

E-print/Working paper (2021)

This pre-print describes the analysis of pharmaceuticals and their transformation products in surface water samples collected in Luxembourg from 2019 to 2020. Details of the experimental and computational ... [more ▼]

This pre-print describes the analysis of pharmaceuticals and their transformation products in surface water samples collected in Luxembourg from 2019 to 2020. Details of the experimental and computational tools and workflows used are fully described in the manuscript. Links to the suspect lists, codes used, and data files are also provided. [less ▲]

Detailed reference viewed: 33 (0 UL)
Full Text
See detailSome uniform bounds for elliptic curves over Q
Lombardo, Davide; Tronto, Sebastiano UL

E-print/Working paper (2021)

We give explicit uniform bounds for several quantities relevant to the study of Galois representations attached to elliptic curves E/Q. We consider in particular the subgroup of scalars in the image of ... [more ▼]

We give explicit uniform bounds for several quantities relevant to the study of Galois representations attached to elliptic curves E/Q. We consider in particular the subgroup of scalars in the image of Galois, the first Galois cohomology group with values in the torsion of E, and the Kummer extensions generated by points of infinite order in E(Q). [less ▲]

Detailed reference viewed: 59 (0 UL)
Full Text
See detailInnovation in Malmö after the Öresund Bridge
Ejermo, Olof; Hussinger, Katrin UL; Kalash, Basheer et al

E-print/Working paper (2021)

Detailed reference viewed: 75 (28 UL)
See detailA Survey of Requirements for COVID-19 Mitigation Strategies. Part II: Elicitation of Requirements
Jamroga, Wojciech UL

E-print/Working paper (2021)

The COVID-19 pandemic has influenced virtually all aspects of our lives. Across the world, countries have applied various mitigation strategies, based on social, political, and technological instruments ... [more ▼]

The COVID-19 pandemic has influenced virtually all aspects of our lives. Across the world, countries have applied various mitigation strategies, based on social, political, and technological instruments. We postulate that multi-agent systems can provide a common platform to study (and balance) their essential properties. We also show how to obtain a comprehensive list of the properties by ``distilling'' them from media snippets. Finally, we present a preliminary take on their formal specification, using ideas from multi-agent logics. [less ▲]

Detailed reference viewed: 64 (9 UL)
Full Text
See detailRapid Artificial Intelligence Solutions in a Pandemic - The COVID-19-20 Lung CT Lesion Segmentation Challenge.
Roth, Holger; Xu, Ziyue; Diez, Carlos Tor et al

E-print/Working paper (2021)

Artificial intelligence (AI) methods for the automatic detection and quantification of COVID-19 lesions in chest computed tomography (CT) might play an important role in the monitoring and management of ... [more ▼]

Artificial intelligence (AI) methods for the automatic detection and quantification of COVID-19 lesions in chest computed tomography (CT) might play an important role in the monitoring and management of the disease. We organized an international challenge and competition for the development and comparison of AI algorithms for this task, which we supported with public data and state-of-the-art benchmark methods. Board Certified Radiologists annotated 295 public images from two sources (A and B) for algorithms training (n=199, source A), validation (n=50, source A) and testing (n=23, source A; n=23, source B). There were 1,096 registered teams of which 225 and 98 completed the validation and testing phases, respectively. The challenge showed that AI models could be rapidly designed by diverse teams with the potential to measure disease or facilitate timely and patient-specific interventions. This paper provides an overview and the major outcomes of the COVID-19 Lung CT Lesion Segmentation Challenge - 2020. [less ▲]

Detailed reference viewed: 43 (0 UL)
Full Text
See detailEfficient and Transferable Adversarial Examples from Bayesian Neural Networks
Gubri, Martin UL; Cordy, Maxime UL; Papadakis, Mike UL et al

E-print/Working paper (2021)

An established way to improve the transferability of black-box evasion attacks is to craft the adversarial examples on a surrogate ensemble model to increase diversity. We argue that transferability is ... [more ▼]

An established way to improve the transferability of black-box evasion attacks is to craft the adversarial examples on a surrogate ensemble model to increase diversity. We argue that transferability is fundamentally related to epistemic uncertainty. Based on a state-of-the-art Bayesian Deep Learning technique, we propose a new method to efficiently build a surrogate by sampling approximately from the posterior distribution of neural network weights, which represents the belief about the value of each parameter. Our extensive experiments on ImageNet and CIFAR-10 show that our approach improves the transfer rates of four state-of-the-art attacks significantly (up to 62.1 percentage points), in both intra-architecture and inter-architecture cases. On ImageNet, our approach can reach 94% of transfer rate while reducing training computations from 11.6 to 2.4 exaflops, compared to an ensemble of independently trained DNNs. Our vanilla surrogate achieves 87.5% of the time higher transferability than 3 test-time techniques designed for this purpose. Our work demonstrates that the way to train a surrogate has been overlooked although it is an important element of transfer-based attacks. We are, therefore, the first to review the effectiveness of several training methods in increasing transferability. We provide new directions to better understand the transferability phenomenon and offer a simple but strong baseline for future work. [less ▲]

Detailed reference viewed: 27 (1 UL)
Full Text
See detailConstitutional engineering of State of exception regimes within the European Union
Gerkrath, Jörg UL

E-print/Working paper (2021)

Detailed reference viewed: 36 (1 UL)
Full Text
See detailDivision in modules and Kummer theory
Tronto, Sebastiano UL

E-print/Working paper (2021)

In this work we generalize the concept of injective module and develop a theory of divisibility for modules over a general ring, which provides a general and unified framework to study Kummer-like field ... [more ▼]

In this work we generalize the concept of injective module and develop a theory of divisibility for modules over a general ring, which provides a general and unified framework to study Kummer-like field extensions arising from commutative algebraic groups. With these tools we provide an effective bound for the degree of the field extensions arising from division points of elliptic curves, extending previous results of Javan Peykar for CM curves and of Lombardo and the author for the non-CM case. [less ▲]

Detailed reference viewed: 51 (1 UL)
Full Text
See detailThe EU Sustainable Finance Framework in Light of International Standards
Zetzsche, Dirk Andreas UL; Bodellini, Marco UL; Consiglio, Roberta

E-print/Working paper (2021)

Detailed reference viewed: 29 (2 UL)
Full Text
See detailPROJECT WARLUX Ambiguities in biographies of Luxembourgish conscripts during and after WWII
Janz, Nina UL

E-print/Working paper (2021)

More than 10,000 Luxembourgish soldiers and recruits and an unknown number of Luxembourgish men and women wore German uniforms during WWII in armed forces and civil organisations, such as the Wehrmacht ... [more ▼]

More than 10,000 Luxembourgish soldiers and recruits and an unknown number of Luxembourgish men and women wore German uniforms during WWII in armed forces and civil organisations, such as the Wehrmacht, Waffen-SS, armed police forces and the Reichsarbeitsdienst (RAD). The "WARLUX" project, based at the University of Luxembourg in the Luxembourg Centre for Contemporary and Digital History (C2DH), intends to collect the biographical data of Luxembourgers who were drafted into the German Army and the Labour Service. Around 3,000 young men and women are used in a case study to research their biographies and individual stories during the war, highlight different approaches to researching World War II, and show different résumés and personal experiences during this period. WARLUX aims to review the categories that have tended to be used in the national history discourse. For these women and men were called different like "forced recruit", "volunteer", "réfractaire" and "déserteur" were used, next to mentions of "Mort la patrie" for whom who died in German uniform. Are these terms appropriate to describe the experiences of these individuals, or do they need to be elucidated and challenged? Who were the people behind these abstract terms? What were their individual experiences, stories, reactions, choices, contradictions and survival strategies during and after World War II (Tames 2016)? The term "forced recruit" has come to suggest the general victim status of all conscripted Luxembourgish soldiers. In this content between the dualism of the official narrative and the historiography of the last decades, the project WARLUX wants to apply another concept: "situative opportunism", to question the cumulative heroism and the power of collective forms of decision-making in "forced environments", like the enrolment of young women and men (Fickers/Brüll, 2019). Following the biographical approach by analysing documents and personal views (letters, diaries), Andreas Fickers and Christoph Brüll (2019) use the term "situative opportunism" to emphasise the link between biographical research and sociological decision theory. Based on Schimank (2005), the authors state that every historical actor has multiple options in a complex decision-making process; these decisions are not necessarily egoist, neither the result of external constraints, but grounded in a situational logic of doing what seems most suitable in this very moment. The project is still in the initial phase but will soon deepen the analysis of the biographies of the individuals using the term "situational opportunism". With the application for the conference, the project team would like to discuss other approaches and start an exchange about other/opposite concepts. [less ▲]

Detailed reference viewed: 37 (0 UL)
See detailTHE EU SUSTAINABLE FINANCE FRAMEWORK IN LIGHT OF INTERNATIONAL STANDARDS
Bodellini, Marco UL

E-print/Working paper (2021)

Detailed reference viewed: 38 (0 UL)
See detailPhase transitions and noise sensitivity on the Poisson space via stopping sets and decision trees
Last, Guenter; Peccati, Giovanni UL; Yogeshwaran, Dhandapani

E-print/Working paper (2021)

Detailed reference viewed: 55 (5 UL)
Full Text
See detailThe Long-Term Effect of Research Grants on the Scientific Output of University Professors
Hussinger, Katrin UL; Carvalho, J.N.

E-print/Working paper (2021)

Detailed reference viewed: 112 (9 UL)
Full Text
See detailLehen der Grafen von Luxemburg im 13. Jahrhundert (Großregion SaarLorLux)
Moulin, Philippe; Pauly, Michel UL; Caruso, Geoffrey UL et al

E-print/Working paper (2021)

The map "The fiefs of the counts of Luxembourg in the 13th century" represents an attempt at a cartographic visualisation of the active fiefs of the counts of Luxembourg between 1200 and 1310. The map was ... [more ▼]

The map "The fiefs of the counts of Luxembourg in the 13th century" represents an attempt at a cartographic visualisation of the active fiefs of the counts of Luxembourg between 1200 and 1310. The map was created within the framework of the Master thesis "Lehnsrecht, Lehnspolitik und Lehnshof der Grafen von Luxemburg im 13. Jahrhundert" and aims to visualise the presence, number and type of fiefs. [less ▲]

Detailed reference viewed: 42 (4 UL)
Full Text
Peer Reviewed
See detailGaussian fluctuation for Gaussian Wishart matrices of overall correlation
Nourdin, Ivan UL; Pu, Fei

E-print/Working paper (2021)

Detailed reference viewed: 76 (2 UL)
Full Text
See detailCoffee, smoking and aspirin are associated with age at onset and clinical severity in idiopathic Parkinson’s disease
Gabbert, Carolin; König, Inke; Lüth, Theresa et al

E-print/Working paper (2021)

Detailed reference viewed: 39 (3 UL)
See detailThe Weyl problem for unbounded convex domains in $\HH^3$
Schlenker, Jean-Marc UL

E-print/Working paper (2021)

Let $K\subset \HH^3$ be a convex subset in $\HH^3$ with smooth, strictly convex boundary. The induced metric on $\partial K$ then has curvature $K>-1$. It was proved by Alexandrov that if $K$ is bounded ... [more ▼]

Let $K\subset \HH^3$ be a convex subset in $\HH^3$ with smooth, strictly convex boundary. The induced metric on $\partial K$ then has curvature $K>-1$. It was proved by Alexandrov that if $K$ is bounded, then it is uniquely determined by the induced metric on the boundary, and any smooth metric with curvature $K>-1$ can be obtained. We propose here an extension of the existence part of this result to unbounded convex domains in $\HH^3$. The induced metric on $\partial K$ is then clearly not sufficient to determine $K$. However one can consider a richer data on the boundary including the ideal boundary of $K$. Specifically, we consider the data composed of the conformal structure on the boundary of $K$ in the Poincar\'e model of $\HH^3$, together with the induced metric on $\partial K$. We show that a wide range of "reasonable" data of this type, satisfying mild curvature conditions, can be realized on the boundary of a convex subset in $\HH^3$. We do not consider here the uniqueness of a convex subset with given boundary data. [less ▲]

Detailed reference viewed: 30 (0 UL)
Full Text
Peer Reviewed
See detailGenetic Diversity and Performance: Evidence From Football Data
Zanaj, Skerdilajda UL; Beine, Michel UL; Peracchi, Silvia UL

E-print/Working paper (2021)

Detailed reference viewed: 192 (23 UL)
Full Text
Peer Reviewed
See detailThe Cost of No Reform: Assessing the Impact of Different Electricity Pricing Regimes on Indonesia\textquoterights Energy Trilemma
Heffron, Raphael; Körner, Marc Fabian; Sumarno, Theresia et al

E-print/Working paper (2021)

Many countries have a clear policy objective of increasing their share of renewable energy sources (RESs). However, a major impediment to higher RES penetration often lies in the historically grown ... [more ▼]

Many countries have a clear policy objective of increasing their share of renewable energy sources (RESs). However, a major impediment to higher RES penetration often lies in the historically grown structures of a country\textquoterights electricity sector. In Indonesia, policy makers have relied on cheap fossil fuels and state control to provide the population with access to both reliable and affordable electricity. However, this focus on only two of the three horns of the energy trilemma, namely energy security and energy equity (and not sustainability), may put Indonesia at risk of missing its ambitious RES targets. In this context, a number of small-scale reform attempts to promote RES integration in recent years have proved to be relatively unsuccessful. Like many other countries, Indonesia needs clear policy directions to avoid an unsustainable lock-in into a fossil fuel future. In the last decades, several other countries have successfully restructured their electricity sectors, for example by introducing a wholesale market for electricity under different electricity pricing systems, including nodal, zonal, or uniform pricing. These countries may hold valuable experiences of overcoming the historically grown barriers to successful RES integration through a greater role for market mechanisms. We develop three generic models that allow policy makers to analyze the impact of introducing either a nodal, a zonal, or a uniform pricing system on the three horns of the energy trilemma in their country. We evaluate our model using a simplified network representation of the Indonesian electricity sector. Our results indicate that each of the pricing systems is able to foster specific horns of the energy trilemma. Considering that any major reform intended to improve energy sustainability in Indonesia will only be a success if it also addresses energy security and energy equity, we also discuss our results from the perspective of energy justice and the need to balance the country\textquoterights energy trilemma. Ultimately, we illustrate a transformation pathway for a more sustainable and just transition to a low-carbon economy in Indonesia. [less ▲]

Detailed reference viewed: 44 (1 UL)