References of "Already available on another site"      in Complete repository Arts & humanities   Archaeology   Art & art history   Classical & oriental studies   History   Languages & linguistics   Literature   Performing arts   Philosophy & ethics   Religion & theology   Multidisciplinary, general & others Business & economic sciences   Accounting & auditing   Production, distribution & supply chain management   Finance   General management & organizational theory   Human resources management   Management information systems   Marketing   Strategy & innovation   Quantitative methods in economics & management   General economics & history of economic thought   International economics   Macroeconomics & monetary economics   Microeconomics   Economic systems & public economics   Social economics   Special economic topics (health, labor, transportation…)   Multidisciplinary, general & others Engineering, computing & technology   Aerospace & aeronautics engineering   Architecture   Chemical engineering   Civil engineering   Computer science   Electrical & electronics engineering   Energy   Geological, petroleum & mining engineering   Materials science & engineering   Mechanical engineering   Multidisciplinary, general & others Human health sciences   Alternative medicine   Anesthesia & intensive care   Cardiovascular & respiratory systems   Dentistry & oral medicine   Dermatology   Endocrinology, metabolism & nutrition   Forensic medicine   Gastroenterology & hepatology   General & internal medicine   Geriatrics   Hematology   Immunology & infectious disease   Laboratory medicine & medical technology   Neurology   Oncology   Ophthalmology   Orthopedics, rehabilitation & sports medicine   Otolaryngology   Pediatrics   Pharmacy, pharmacology & toxicology   Psychiatry   Public health, health care sciences & services   Radiology, nuclear medicine & imaging   Reproductive medicine (gynecology, andrology, obstetrics)   Rheumatology   Surgery   Urology & nephrology   Multidisciplinary, general & others Law, criminology & political science   Civil law   Criminal law & procedure   Criminology   Economic & commercial law   European & international law   Judicial law   Metalaw, Roman law, history of law & comparative law   Political science, public administration & international relations   Public law   Social law   Tax law   Multidisciplinary, general & others Life sciences   Agriculture & agronomy   Anatomy (cytology, histology, embryology...) & physiology   Animal production & animal husbandry   Aquatic sciences & oceanology   Biochemistry, biophysics & molecular biology   Biotechnology   Entomology & pest control   Environmental sciences & ecology   Food science   Genetics & genetic processes   Microbiology   Phytobiology (plant sciences, forestry, mycology...)   Veterinary medicine & animal health   Zoology   Multidisciplinary, general & others Physical, chemical, mathematical & earth Sciences   Chemistry   Earth sciences & physical geography   Mathematics   Physics   Space science, astronomy & astrophysics   Multidisciplinary, general & others Social & behavioral sciences, psychology   Animal psychology, ethology & psychobiology   Anthropology   Communication & mass media   Education & instruction   Human geography & demography   Library & information sciences   Neurosciences & behavior   Regional & inter-regional studies   Social work & social policy   Sociology & social sciences   Social, industrial & organizational psychology   Theoretical & cognitive psychology   Treatment & clinical psychology   Multidisciplinary, general & others     Showing results 1 to 100 of 859 1 2 3 4 5 6     PB 8783: the first sdO star suitable for asteroseismic modeling?Van Grootel, Valérie ; Randall, Suzanna K.; Latour, Marilyn et alE-print/Working paper (in press)Pulsating hot B subdwarfs (sdB) have become one of the showcases of asteroseismology. Thanks to the combination of rich observed pulsation spectra and state-of-the-art modeling tools it is possible to ... [more ▼]Pulsating hot B subdwarfs (sdB) have become one of the showcases of asteroseismology. Thanks to the combination of rich observed pulsation spectra and state-of-the-art modeling tools it is possible to tightly constrain fundamental parameters such as the stellar mass for these compact, evolved objects in the core He-burning phase of evolution. In comparison, the exploitation of sdO pulsators - hotter stars thought to be in a more advanced evolutionary stage - is still in its infancy. While a small number have been identified in Globular Clusters (GCs), they are extremely rare among the field population. It was recently suggested that PB8783, one of the very first sdB pulsators discovered in 1997, may in fact be an unrecognized hot sdO star with very similar properties to the GC sdO pulsators. Here, we present new very high-quality spectroscopy as well as an asteroseismic analysis of this star with the aim of solving the mystery of its nature. [less ▲]Detailed reference viewed: 36 (11 ULiège) Mapping the functional brain state of a world champion freediver in static dry apneaAnnen, Jitka ; Panda, Rajanikant ; Martial, Charlotte et alE-print/Working paper (in press)Detailed reference viewed: 39 (11 ULiège) LETTI QUASI PER CASO: Filippo La Porta, Come un raggio nell’acqua. Dante e la relazione con l’altro, Salerno, Roma 2021Curreri, Luciano E-print/Working paper (2021)Detailed reference viewed: 18 (1 ULiège) LEGACCETTI. Recensioni come ricordi: Poesia come ossigeno.Curreri, Luciano E-print/Working paper (2021)Detailed reference viewed: 20 (2 ULiège) LEGACCETTI. Recensioni come ricordi: Scritti su LeopardiCurreri, Luciano E-print/Working paper (2021)Detailed reference viewed: 18 (3 ULiège) Compte rendu de la Journée d'étude « Supports d’écriture : urbains, imprimés, numériques »Lansmans, Alexandre E-print/Working paper (2021)Detailed reference viewed: 18 (2 ULiège) L'érable sycomore: une espèce d'érables toxiqueGenoux, Nelly; Votion, Dominique ; Marcillaud-Pitel, ChristelE-print/Working paper (2021)Très commun dans nos campagnes, l’érable sycomore est un arbre toxique pour les chevaux. L’ingestion des fruits et plantules de l’arbre est à l’origine d’une maladie grave affectant les muscles ... [more ▼]Très commun dans nos campagnes, l’érable sycomore est un arbre toxique pour les chevaux. L’ingestion des fruits et plantules de l’arbre est à l’origine d’une maladie grave affectant les muscles respiratoires, posturaux et le myocarde, à l’issue souvent mortelle : la myopathie atypique. L’intoxication est saisonnière, avec deux principales périodes à risque au pâturage : la levée des plantules au printemps et la chute des fruits (samares) à l’automne. Comment limiter les risques sans systématiquement abattre les érables ? [less ▲]Detailed reference viewed: 26 (1 ULiège) Camera Calibration and Player Localization in SoccerNet-v2 and Investigation of their Representations for Action SpottingCioppa, Anthony ; Deliège, Adrien ; Magera, Floriane et alE-print/Working paper (2021)Soccer broadcast video understanding has been drawing a lot of attention in recent years within data scientists and industrial companies. This is mainly due to the lucrative potential unlocked by ... [more ▼]Soccer broadcast video understanding has been drawing a lot of attention in recent years within data scientists and industrial companies. This is mainly due to the lucrative potential unlocked by effective deep learning techniques developed in the field of computer vision. In this work, we focus on the topic of camera calibration and on its current limitations for the scientific community. More precisely, we tackle the absence of a large-scale calibration dataset and of a public calibration network trained on such a dataset. Specifically, we distill a powerful commercial calibration tool in a recent neural network architecture on the large-scale SoccerNet dataset, composed of untrimmed broadcast videos of 500 soccer games. We further release our distilled network, and leverage it to provide 3 ways of representing the calibration results along with player localization. Finally, we exploit those representations within the current best architecture for the action spotting task of SoccerNet-v2, and achieve new state-of-the-art performances. [less ▲]Detailed reference viewed: 22 (2 ULiège) De la Commune de Paris à l’Europe de la Communauté : bribes pour un imaginaireCurreri, Luciano E-print/Working paper (2021)Comment la Commune de Paris peut-elle inciter à repenser l'Europe ? Dans ce texte érudit, qui construit des points de liaison entre Victor Hugo et Denis de Rougemont, entre le Paris de 1871 et la ... [more ▼]Comment la Commune de Paris peut-elle inciter à repenser l'Europe ? Dans ce texte érudit, qui construit des points de liaison entre Victor Hugo et Denis de Rougemont, entre le Paris de 1871 et la Catalogne d'aujourd'hui, Luciano Curreri trace un chemin qui révèle toute l'actualité des concepts mis en avant par la Commune à l'occasion de son 150e anniversaire. [less ▲]Detailed reference viewed: 26 (1 ULiège) Hanan v. Germany: applying the ECHR to United Nations international military operation without affecting States’ willingness and ability to engage in such operations?Bouhon, Frédéric E-print/Working paper (2021)This short article is a comment of the Hanan v. Germany ECtHR Judgment. On 16 January 2021, the Grand Chamber of the European Court of Human Rights (ECtHR) rendered an important judgment that adds new ... [more ▼]This short article is a comment of the Hanan v. Germany ECtHR Judgment. On 16 January 2021, the Grand Chamber of the European Court of Human Rights (ECtHR) rendered an important judgment that adds new insights to its already complex case law regarding the extraterritorial applicability of the European Convention on Human Rights (the ‘Convention’). In the case Hanan v. Germany (application no. 4871/16), the Strasbourg-based Court confirmed the application of the Convention to German prosecution authorities in the context of an extraterritorial military operation within the framework of a mandate given by a resolution of the United Nations Security Council. This is therefore a particularly sensitive case, dealing both with the limits of the scope of the Convention and the effect it may have on military and geopolitical issues. [less ▲]Detailed reference viewed: 128 (10 ULiège) Chunking by social relationship in working memoryPaparella, Ilenia ; Papeo, LiubaE-print/Working paper (2021)Working memory (WM) uses knowledge and relations to organize and store multiple individual items in a smaller set of structured units, or chunks. We investigated whether a crowd of individuals that ... [more ▼]Working memory (WM) uses knowledge and relations to organize and store multiple individual items in a smaller set of structured units, or chunks. We investigated whether a crowd of individuals that exceeds the WM is retained and, therefore, recognized more accurately, if individuals are represented as interacting with one another –i.e., they form social chunks. Further, we asked what counts as a social chunk in WM: two individuals involved in a meaningful interaction or just spatially close and face-to-face. In three experiments with a delayed change-detection task, participants had to report whether a probe-array was the same of, or different from a sample-array featuring two or three dyads of bodies either face-to-face (facing array) or back-to-back (non-facing array). In Experiment 1, where facing dyads depicted coherent, meaningful interactions, participants were more accurate to detect changes in facing (vs. non-facing) arrays. A similar advantage was found in Experiment 2, even though facing dyads depicted no meaningful interaction. In Experiment 3, we introduced a secondary task (verbal shadowing) to increase WM load. This manipulation abolished the advantage of facing (vs. non-facing) arrays, only when facing dyads depicted no meaningful interactions. These results show that WM uses representation of interaction to chunk crowds in social groups. The mere facingness of bodies is sufficient on its own to evoke representation of interaction, thus defining a social chunk in WM; although the lack of semantic anchor makes chunking fainter and more susceptible to interference of a secondary task [less ▲]Detailed reference viewed: 27 (3 ULiège) Leveraging Global Parameters for Flow-based Neural Posterior EstimationRodrigues, Pedro; Moreau, Thomas; Louppe, Gilles et alE-print/Working paper (2021)Inferring the parameters of a stochastic model based on experimental observations is central to the scientific method. A particularly challenging setting is when the model is strongly indeterminate, i.e ... [more ▼]Inferring the parameters of a stochastic model based on experimental observations is central to the scientific method. A particularly challenging setting is when the model is strongly indeterminate, i.e., when distinct sets of parameters yield identical observations. This arises in many practical situations, such as when inferring the distance and power of a radio source (is the source close and weak or far and strong?) or when estimating the amplifier gain and underlying brain activity of an electrophysiological experiment. In this work, we present a method for cracking such indeterminacy by exploiting additional information conveyed by an auxiliary set of observations sharing global parameters. Our method extends recent developments in simulation-based inference(SBI) based on normalizing flows to Bayesian hierarchical models. We validate quantitatively our proposal on a motivating example amenable to analytical solutions, and then apply it to invert a well known non-linear model from computational neuroscience. [less ▲]Detailed reference viewed: 45 (2 ULiège) Journalism students in internship and deontology in French-speaking BelgiumKrywicki, Boris ; Tixier, Florian; Fierens, Marie et alE-print/Working paper (2021)Detailed reference viewed: 21 (1 ULiège) Automatic sequences: from rational bases to treesRigo, Michel ; Stipulanti, Manon E-print/Working paper (2021)The nth term of an automatic sequence is the output of a deterministic finite automaton fed with the representation of n in a suitable numeration system. In this paper, instead of considering automatic ... [more ▼]The nth term of an automatic sequence is the output of a deterministic finite automaton fed with the representation of n in a suitable numeration system. In this paper, instead of considering automatic sequences built on a numeration system with a regular numeration language, we consider these built on languages associated with trees having periodic labeled signatures and, in particular, rational base numeration systems. We obtain two main characterizations of these sequences. The first one is concerned with r-block substitutions where r morphisms are applied periodically. In particular, we provide examples of such sequences that are not morphic. The second characterization involves the factors, or subtrees of finite height, of the tree associated with the numeration system and decorated by the terms of the sequence. [less ▲]Detailed reference viewed: 29 (2 ULiège) Dynamical behavior of alternate base expansionsCharlier, Emilie ; Cisternino, Célia ; Dajani, KarmaE-print/Working paper (2021)We generalize the greedy and lazy β-transformations for a real base β to the setting of alternate bases β = (β0, . . . , βp−1), which were recently introduced by the first and second authors as a ... [more ▼]We generalize the greedy and lazy β-transformations for a real base β to the setting of alternate bases β = (β0, . . . , βp−1), which were recently introduced by the first and second authors as a particular case of Cantor bases. As in the real base case, these new transformations, denoted Tβ and Lβ respectively, can be iterated in order to generate the digits of the greedy and lazy β-expansions of real numbers. The aim of this paper is to describe the dynamical behaviors of Tβ and Lβ. We first prove the existence of a unique absolutely continuous (with respect to an extended Lebesgue measure, called the p-Lebesgue measure) Tβ-invariant measure. We then show that this unique measure is in fact equivalent to the p-Lebesgue measure and that the corresponding dynamical system is ergodic and has entropy 1/p log(βp−1 · · · β0). We then express the density of this p measure and compute the frequencies of letters in the greedy β-expansions. We obtain the dynamical properties of Lβ by showing that the lazy dynamical system is isomorphic to the greedy one. We also provide an isomorphism with a suitable extension of the β- shift. Finally, we show that the β-expansions can be seen as (βp−1 · · · β0 )-representations over general digit sets and we compare both frameworks. [less ▲]Detailed reference viewed: 21 (1 ULiège) Foucault auditeur: les études de philosophie et de psychologie à Paris, 1946-1953.Dassonneville, Gautier E-print/Working paper (2021)In the vast collection of documents made available to the public by the Foucault Reading Records project, many of the manuscripts have a very special status, since they are in fact lecture notes taken ... [more ▼]In the vast collection of documents made available to the public by the Foucault Reading Records project, many of the manuscripts have a very special status, since they are in fact lecture notes taken during the years of study in Paris where Foucault obtained his degrees in philosophy and psychology, at the end of a double course of study carried out between 1946 and 1953, at the ENS and the Sorbonne. Placed side by side, these documents reveal the portrait of a Foucault who, between the ages of twenty and twenty-seven, trained with some of the new masters of the University at the Liberation, took part in the age-old and prestigious game of the Agrégation in philosophy and enrolled among the very first students of the new psychology course at the University of Paris. Translated with www.DeepL.com/Translator (free version) [less ▲]Detailed reference viewed: 22 (6 ULiège) Treatment using chalybs, according to Johannes Hartmann and Eberhard Gockel: A remedy against diseases of the liver and the spleen in 17th century GermanyDroixhe, Daniel E-print/Working paper (2021)This short and prospective article deals with Johannes Hartmann (1568-1631), who is reputed as having been the first professor of chemistry at the University of Marburg. ‘For Hartmann’, Bruce T. Moran has ... [more ▼]This short and prospective article deals with Johannes Hartmann (1568-1631), who is reputed as having been the first professor of chemistry at the University of Marburg. ‘For Hartmann’, Bruce T. Moran has written, ‘the road to the laboratory of chemical medicine in Marburg began in Kassel, at the court of the university’s protector, the Landgrave Moritz of Hesse (1572-1632)’. Having studied at Wittenberg, Hartmann was appointed as a mathematician in Kassel and was chosen to fill the chair of mathematics when the incumbent died. He received a medical degree in 1606 and ‘began a brief correspondence with the French Paracelsian, Joseph Duchesne (Quercetanus) (c. 1544-1609), who had visited Kassel in 1604’. Moritz had become captivated by the study of occult philosophy, especially in relation to alchemy, and was well on his way to amassing an extensive collection of alchemical, Cabbalistic, and Paracelsian manuscripts, and to fashioning a court circle of alchemical and medical adepts. Thus, ‘in 1608, he enthusiastically received a suggestion from Hartmann for founding a collegium chymicum at Marburg’ and he ‘chose to invest Hartmann with a new university role and a new title – Professor publicus chymiatriae’. [less ▲]Detailed reference viewed: 67 (11 ULiège) Politique commerciale extérieure : quel rôle pour les assemblées parlementaires ? Le cas des États-Unis et de l’Union EuropéenneBricart, Vincent E-print/Working paper (2021)Depuis le début des années 2010, une série de nouveaux accords ou de processus de négociations commerciaux entre de grands blocs géographiques ont émergé dans le monde. L’Union Européenne (UE) et les ... [more ▼]Depuis le début des années 2010, une série de nouveaux accords ou de processus de négociations commerciaux entre de grands blocs géographiques ont émergé dans le monde. L’Union Européenne (UE) et les États-Unis ont à ce titre joué un rôle de premier plan dans ces initiatives et dans leurs proliférations. Face à l’impact grandissant de la globalisation sur le quotidien des citoyens, les assemblées législatives tendent à s’impliquer progressivement dans ces processus diplomatiques et à gagner en importance et en visibilité dans leur fonction vis-à-vis de ces accords. Si bien qu’aujourd’hui, toute personne s’intéressant de près ou de loin à l’étude des accords commerciaux ne peut plus ignorer le rôle qu’y jouent les parlements des États impliqués dans ces processus. Les négociations du Partenariat Transatlantique de Commerce et d’Investissement (TTIP), de l’Accord Économique et Commercial Global (CETA) et de l’Accord de Partenariat Transpacifique (TPP) représentent ainsi de bons indicateurs du rôle, des atouts et des limites que les interventions d’un parlement dans un processus de négociation peuvent rencontrer en fonction du contexte politique ou institutionnel et de l’appui de l’opinion publique. Le Parlement européen et le Congrès américain constituent respectivement des assemblées législatives relativement puissantes, représentant un nombre de citoyens conséquent et ayant d’importantes prérogatives constitutionnelles ou institutionnelles en matière commerciale, mais évoluant dans des cadres significativement différents. Via leurs outils institutionnels et à travers des pressions formelles et informelles de la part de ces deux pouvoirs législatifs, les exécutifs se retrouvent souvent contraints de prendre en compte certaines revendications des parlementaires faisant voix aux revendications d’une partie de la société civile. À défaut, le risque de voir une négociation échouer faute de ratification de l’accord par le pouvoir législatif est important. Néanmoins, l’influence du pouvoir législatif n’est pas la même pour chaque négociation et le contexte de celle-ci va dès lors jouer un rôle important pour en déterminer l’amplitude et la visibilité d’une assemblée dans ces différents processus. [less ▲]Detailed reference viewed: 31 (5 ULiège) shamo: A tool for electromagnetic modelling, simulation and sensitivity analysis of the headGrignard, Martin ; Geuzaine, Christophe ; Phillips, Christophe E-print/Working paper (2021)Accurate electromagnetic modelling of the head of a subject is of main interest in the fields of source reconstruction and brain stimulation. Those processes rely heavily on the quality of the model and ... [more ▼]Accurate electromagnetic modelling of the head of a subject is of main interest in the fields of source reconstruction and brain stimulation. Those processes rely heavily on the quality of the model and, even though the geometry of the tissues can be extracted from magnetic resonance images (MRI) or computed tomography (CT), their physical properties such as the electrical conductivity are hard to measure with non intrusive techniques. In this paper, we propose a tool to assess the uncertainty in the model parameters as well as compute a parametric electroencephalography (EEG) forward solution and current distribution for transcranial direct current stimulation (tDCS). [less ▲]Detailed reference viewed: 21 (1 ULiège) TRAIL - An Experimental Trace and Residue Reference Library for the functional analysis of stone tools in LiègeRots, Veerle E-print/Working paper (2021)Detailed reference viewed: 20 (2 ULiège) Les trois « C » du succès pour une exposition d’art et d’histoire. L’expérience liégeoiseGeorge, Philippe E-print/Working paper (2021)Les expositions d'art et d'histoire à LiègeDetailed reference viewed: 25 (1 ULiège) La rivière ‘Khauraha’, médiatrice entre non-humains et villageois (Népal)Vouiller, Nolwen E-print/Working paper (2021)Cet article est un court et très accessible aperçu de mon terrain de master et de thèse, la rivière Khauraha de la Bufferzone de Bardia, au Népal. J'y aborde, à partir de trois premiers mois de terrain, l ... [more ▼]Cet article est un court et très accessible aperçu de mon terrain de master et de thèse, la rivière Khauraha de la Bufferzone de Bardia, au Népal. J'y aborde, à partir de trois premiers mois de terrain, l'importance de la rivière dans les interactions entre humains et non-humains. [less ▲]Detailed reference viewed: 26 (11 ULiège) Les tessères onomastiques de Deir el-Médina : recherche en cours dans les collections de l’Institut français d’archéologie orientale du CairePietri, Renaud E-print/Working paper (2021)Short presentation of a work in progress on the 'name stones' from Deir el-Medina now kept in the IFAO's archives.Detailed reference viewed: 31 (6 ULiège) Se remettre de la fête : porter des couronnes végétales pour éviter la « gueule de bois »Ricciardetto, Antonio E-print/Working paper (2020)Detailed reference viewed: 25 (4 ULiège) Se rétablir des excès de table selon Oribase, médecin grec de l’empereur Julien (milieu du IVe siècle)Marganne, Marie-Hélène E-print/Working paper (2020)Recommandations thérapeutiques du médecin grec Oribase de Pergame pour se rétablir des excès de table et de boisson.Detailed reference viewed: 41 (5 ULiège) Scientists for Future empfiehlt eine repräsentative Klima-Bürger:innenversammlung im Jahr 2021 (Version 1.0)Hagedorn, Gregor; Pfennig, Andreas E-print/Working paper (2020)Detailed reference viewed: 17 (3 ULiège) pyActigraphy: open-source python package for actigraphy data visualisation and analysisHammad, Grégory ; Reyt, Mathilde ; Beliy, Nikita et alE-print/Working paper (2020)Detailed reference viewed: 39 (1 ULiège) Spin-orbit-assisted electron pairing in 1D waveguidesDamanet, François ; Mansfield, Elliott; Briggeman, Megan et alE-print/Working paper (2020)Understanding and controlling the transport properties of interacting fermions is a key forefront in quantum physics across a variety of experimental platforms. Motivated by recent experiments in 1D ... [more ▼]Understanding and controlling the transport properties of interacting fermions is a key forefront in quantum physics across a variety of experimental platforms. Motivated by recent experiments in 1D electron channels written on the $\mathrm{LaAlO_3}$/$\mathrm{SrTiO_3}$ interface, we analyse how the presence of different forms of spin-orbit coupling (SOC) can enhance electron pairing in 1D waveguides. We first show how the intrinsic Rashba SOC felt by electrons at interfaces such as $\mathrm{LaAlO_3}$/$\mathrm{SrTiO_3}$ can be reduced when they are confined in 1D. Then, we discuss how SOC can be engineered, and show using a mean-field Hartree-Fock-Bogoliubov model that SOC can generate and enhance spin-singlet and triplet electron pairing. Our results are consistent with two recent sets of experiments [Briggeman et al., arXiv:1912.07164; Sci. Adv. 6, eaba6337 (2020)] that are believed to engineer the forms of SOC investigated in this work, which suggests that metal-oxide heterostructures constitute attractive platforms to control the collective spin of electron bound states. However, our findings could also be applied to other experimental platforms involving spinful fermions with attractive interactions, such as cold atoms. [less ▲]Detailed reference viewed: 19 (3 ULiège) Regular sequences and synchronized sequences in abstract numeration systemsCharlier, Emilie ; Cisternino, Célia ; Stipulanti, Manon E-print/Working paper (2020)The notion of b-regular sequences was generalized to abstract numeration systems by Maes and Rigo in 2002. Their definition is based on a notion of S-kernel that extends that of b-kernel. However, this ... [more ▼]The notion of b-regular sequences was generalized to abstract numeration systems by Maes and Rigo in 2002. Their definition is based on a notion of S-kernel that extends that of b-kernel. However, this definition does not allow us to generalize all of the many characterizations of b-regular sequences. In this paper, we present an alternative definition of S-kernel, and hence an alternative definition of S-regular sequences, which enables us to use recognizable formal series in order to generalize most (if not all) known characterizations of b-regular sequences to abstract numeration systems. We then give two characterizations of S-automatic sequences as particular S-regular sequences. Next, we present a general method to obtain various families of S-regular sequences by enumerating S-recognizable properties of S-automatic sequences. As an example of the many possible applications of this method, we show that, provided that addition is S-recognizable, the factor complexity of an S-automatic sequence defines an S-regular sequence. In the last part of the paper, we study S-synchronized sequences. Along the way, we prove that the formal series obtained as the composition of a synchronized relation and a recognizable series is recognizable. As a consequence, the composition of an S-synchronized sequence and a S-regular sequence is shown to be S-regular. All our results are presented in an arbitrary dimension d and for an arbitrary semiring K. [less ▲]Detailed reference viewed: 25 (5 ULiège) SoccerNet-v2: A Dataset and Benchmarks for Holistic Understanding of Broadcast Soccer VideosDeliège, Adrien ; Cioppa, Anthony ; Giancola, Silvio et alE-print/Working paper (2020)Understanding broadcast videos is a challenging task in computer vision, as it requires generic reasoning capabilities to appreciate the content offered by the video editing. In this work, we propose ... [more ▼]Understanding broadcast videos is a challenging task in computer vision, as it requires generic reasoning capabilities to appreciate the content offered by the video editing. In this work, we propose SoccerNet-v2, a novel large-scale corpus of manual annotations for the SoccerNet video dataset, along with open challenges to encourage more research in soccer understanding and broadcast production. Specifically, we release around 300k annotations within SoccerNet's 500 untrimmed broadcast soccer videos. We extend current tasks in the realm of soccer to include action spotting, camera shot segmentation with boundary detection, and we define a novel replay grounding task. For each task, we provide and discuss benchmark results, reproducible with our open-source adapted implementations of the most relevant works in the field. SoccerNet-v2 is presented to the broader research community to help push computer vision closer to automatic solutions for more general video understanding and production purposes. [less ▲]Detailed reference viewed: 67 (7 ULiège) Opto-electronic properties and solar cell efficiency modelling of Cu2ZnXS4 (X=Sn,Ge,Si) kesteritesRatz, Thomas ; Raty, Jean-Yves ; Brammertz, Guy et alE-print/Working paper (2020)In this work, first principle calculations of Cu2 ZnSnS4 (CZTS), Cu2 ZnGeS4 (CZGS) and Cu2 ZnSiS4 (CZSS) are performed to highlight the impact of the cationic substitution on the structural, electronic ... [more ▼]In this work, first principle calculations of Cu2 ZnSnS4 (CZTS), Cu2 ZnGeS4 (CZGS) and Cu2 ZnSiS4 (CZSS) are performed to highlight the impact of the cationic substitution on the structural, electronic and optical properties of kesterite compounds. Direct bandgaps are reported with values of 1.32, 1.89 and 3.06 eV respectively for CZTS, CZGS and CZSS. In addition, absorption coefficient values of the order of 10^4 cm^{−1} are obtained, indicating the applicability of these materials as absorber layer for solar cell applications. In the second part of this study, ab initio results (absorption coefficient, refractive index and reflectivity) are used as input data to model the electrical power conversion efficiency of kesterite-based solar cell. In that perspective, we used an improved version of the Shockley-Queisser theoretical model including non-radiative recombination via an external parameter defined as the internal quantum efficiency. Based on predicted optimal absorber layer thicknesses, the variation of the solar cell maximal efficiency is studied as a function of the non-radiative recombination rate. Maximal efficiencies of 25.88 %, 19.94 % and 3.11 % are reported respectively for Cu2ZnSnS4, Cu2ZnGeS4 and Cu2ZnSiS4 for vanishing non-radiative recombination rate. Using a realistic internal quantum efficiency which provides 𝑉OC values comparable to experimental measurements, solar cell efficiencies of 15.88, 14.98 and 2.66 % are reported respectively for Cu2ZnSnS4, Cu2ZnGeS4 and Cu2ZnSiS4 (for an optimal thickness of 1.15 𝜇m). With this methodology we confirm the suitability of Cu2ZnSnS4 in single junction solar cells, with a possible efficiency improvement of 10% enabled through the reduction of the non-radiative recombination rate. In addition, Cu2ZnGeS4 appears to be an interesting candidate as top cell absorber layer for tandem approaches whereas Cu2ZnSiS4 might be interesting for transparent photovoltaic windows. [less ▲]Detailed reference viewed: 34 (4 ULiège) Can AI Replace the FTC?Massarotto, Giovanna; Ittoo, Ashwin E-print/Working paper (2020)Detailed reference viewed: 33 (2 ULiège) Les contours de la nouvelle taxe sur les comptes-titresNollet, Aymeric ; Philippe, Denis-Emmanuel E-print/Working paper (2020)Detailed reference viewed: 19 (0 ULiège) Towards constraining warm dark matter with stellar streams through neural simulation-based inferenceHermans, Joeri ; Banik, Nilanjan; Weniger, Christophe et alE-print/Working paper (2020)A statistical analysis of the observed perturbations in the density of stellar streams can in principle set stringent contraints on the mass function of dark matter subhaloes, which in turn can be used to ... [more ▼]A statistical analysis of the observed perturbations in the density of stellar streams can in principle set stringent contraints on the mass function of dark matter subhaloes, which in turn can be used to constrain the mass of the dark matter particle. However, the likelihood of a stellar density with respect to the stream and subhaloes parameters involves solving an intractable inverse problem which rests on the integration of all possible forward realisations implicitly defined by the simulation model. In order to infer the subhalo abundance, previous analyses have relied on Approximate Bayesian Computation (ABC) together with domain-motivated but handcrafted summary statistics. Here, we introduce a likelihood-free Bayesian inference pipeline based on Amortised Approximate Likelihood Ratios (AALR), which automatically learns a mapping between the data and the simulator parameters and obviates the need to handcraft a possibly insufficient summary statistic. We apply the method to the simplified case where stellar streams are only perturbed by dark matter subhaloes, thus neglecting baryonic substructures, and describe several diagnostics that demonstrate the effectiveness of the new method and the statistical quality of the learned estimator. [less ▲]Detailed reference viewed: 18 (0 ULiège) La preuve par l'image. "En Vie ?" : une inscription urbaineLansmans, Alexandre E-print/Working paper (2020)Contribution à la première édition belge de l'exposition en ligne "La Preuve par l'image", du 23 novembre au 6 décembre 2020, organisée par Réjouisciences dans le cadre de la Nuit européenne des ... [more ▼]Contribution à la première édition belge de l'exposition en ligne "La Preuve par l'image", du 23 novembre au 6 décembre 2020, organisée par Réjouisciences dans le cadre de la Nuit européenne des Chercheur·e·s, réunissant des images commentées issues de travaux de recherche. [less ▲]Detailed reference viewed: 24 (2 ULiège) Lutte contre la furiose du bananierMassart, Sébastien E-print/Working paper (2020)Detailed reference viewed: 19 (1 ULiège) Models of Law and Regulation for AIDe Cooman, Jérôme ; Petit, NicolasE-print/Working paper (2020)This paperdiscusses models of law and regulation of Artificial Intelligence (“AI”). The discussion focuses on four models: the black letter model, the emergent model, the ethical model, and the risk ... [more ▼]This paperdiscusses models of law and regulation of Artificial Intelligence (“AI”). The discussion focuses on four models: the black letter model, the emergent model, the ethical model, and the risk regulation model. All four models currently inform, individually or jointly, integrally or partially, consciously or unconsciously, law and regulatory reform towards AI. We describe each model’s strengths and weaknesses, discuss whether technological evolution deserves to be accompanied by existing or new laws, and propose a fifth model based on externalities with a moral twist. [less ▲]Detailed reference viewed: 88 (5 ULiège) The political economic of financing climate policy : evidence from the solar PV subsidy programsDe Groote, Olivier; Gautier, Axel ; Verboven, FrankE-print/Working paper (2020)To combat climate change, governments are taking an increasing number of technology-specific measures to support green technologies. In this paper, we look at the very generous subsidy policies to solar ... [more ▼]To combat climate change, governments are taking an increasing number of technology-specific measures to support green technologies. In this paper, we look at the very generous subsidy policies to solar PVs in the three regions of Belgium to ask the question of how voters responded to these programs. We provide evidence that voters did not reward the incumbent government that was responsible for the program, as predicted by the ‘buying-votes’ hypothesis. Instead, we find that voters punish the incumbent government because of the increasing awareness of the high financing costs. These did not only affectt he non-adopting electricity consumers who did not benefit from the programs, but also the adopting prosumers, who saw unannounced new costs such as the introduction of prosumer fees to get access to the grid. [less ▲]Detailed reference viewed: 68 (3 ULiège) Ceramica comune da mensa e da dispensa di RomaDienst, Simon E-print/Working paper (2020)Detailed reference viewed: 30 (3 ULiège) Ceramica da cucina di RomaDienst, Simon E-print/Working paper (2020)Detailed reference viewed: 31 (2 ULiège) LETTI QUASI PER CASO, SCRIBACCHIATI PER UNA QUALCHE NECESSITÀ (1): Claudio Giunta, “Le alternative non esistono. La vita e le opere di Tommaso Labranca”.Curreri, Luciano E-print/Working paper (2020)Detailed reference viewed: 35 (10 ULiège) I want to be an Open Scientist! Research evaluation and incentives to boost Open Science and research careersTanlongo, Federica; O’Neill, Gareth; Kurapati, Shalini et alE-print/Working paper (2020)Everybody is talking about Open Science and FAIR data but can you really make a living (and a good career) out of it? Will my career get better if I FAIRify my data? Or will it just make my head ache ... [more ▼]Everybody is talking about Open Science and FAIR data but can you really make a living (and a good career) out of it? Will my career get better if I FAIRify my data? Or will it just make my head ache? When someone will evaluate my research, will the fact that my data complies with all the Open Science best practices matter? Or am I just losing time I should rather spend publishing on whatever journal I can lay hands on? And where am I supposed to learn how to be fair and open anyway? The right answer to these questions is crucial to the career choices and expectations of many students and young researchers, yes, but it is also the point which can make the difference between succeeding or failing in establishing Open Science (and ultimately Good Science). To be able to shift the research evaluation system in Europe in order to produce quality and reliable data, to set up a working incentive system for individual researchers and organisations is one of the keys to a widespread uptake of Open Science and FAIR practices. And being so crucial a point, we believe that researchers, Research Infrastructures, scientific organisations should have a say in this. That’s why we proposed an interactive session where good ideas, innovative pilots, proposed policies from all across Europe were presented and discussed. [less ▲]Detailed reference viewed: 87 (7 ULiège) Conversation japonaise sur les bienfaits de la sémiotiqueBadir, Sémir ; Leone, MassimoE-print/Working paper (2020)Detailed reference viewed: 23 (1 ULiège) La terre sigillée africaine - productions C, C/E et EDienst, Simon E-print/Working paper (2020)Detailed reference viewed: 29 (4 ULiège) La céramique à vernis noirDienst, Simon E-print/Working paper (2020)Detailed reference viewed: 27 (3 ULiège) La terre sigillée africaine - productions A, A/D et DDienst, Simon E-print/Working paper (2020)Detailed reference viewed: 24 (4 ULiège) Allocation of locally generated electricity in renewable energy communitiesManuel de Villena Millan, Miguel ; Mathieu, Sébastien ; Vermeulen, Eric et alE-print/Working paper (2020)This paper introduces a methodology to perform an ex-post allocation of locally generated electricity among the members of a renewable energy community. Such an ex-post allocation takes place in a ... [more ▼]This paper introduces a methodology to perform an ex-post allocation of locally generated electricity among the members of a renewable energy community. Such an ex-post allocation takes place in a settlement phase where the financial exchanges of the community are based on the production and consumption profiles of each member. The proposed methodology consists of an optimisation framework which (i) minimises the sum of individual electricity costs of the community members, and (ii) can enforce minimum self-sufficiency rates –proportion of electricity consumption covered by local production– on each member, enhancing the economic gains of some of them. The latter capability aims to ensure that members receive enough incentives to participate in the renewable energy community. This framework is designed so as to provide a practical approach that is ready to use by community managers, which is compliant with current legislation on renewable energy communities. It computes a set of optimal repartition keys, which represent the percentage of total local production given to each member – one key per metering period per member. These keys are computed based on an initial set of keys provided in the simulation, which are typically contractual i.e., agreed upon between the member and the manager the renewable energy community. This methodology is tested in a broad range of scenarios, illustrating its ability to optimise the operational costs of a renewable energy community. [less ▲]Detailed reference viewed: 289 (12 ULiège) Les migrations environnementales : un nouvel objet d’enseignementMerenne-Schoumaker, Bernadette E-print/Working paper (2020)À partir d'idées reçues sur les migrants climatiques et environnementaux, l'autrice examine la difficulté à nommer et à quantifier ce phénomène avant de faire le point sur l'état actuel des connaissances ... [more ▼]À partir d'idées reçues sur les migrants climatiques et environnementaux, l'autrice examine la difficulté à nommer et à quantifier ce phénomène avant de faire le point sur l'état actuel des connaissances. Elle montre ensuite comment cette question peut s'insérer dans les programmes de géographie de l'enseignement secondaire. Une place particulière est accordée aux documents, aux outils et aux démarches possibles. [less ▲]Detailed reference viewed: 66 (1 ULiège) COVID-19 and ethnic-oriented shoppingEl Boujjoufi, Mohamed ; Mustafa, Ahmed; Benkorichi, Oualid et alE-print/Working paper (2020)The novel Coronavirus (COVID-19) impacted daily life for residents of the majority of countries worldwide. In this this research note, we explore how the pandemic is changing religious-oriented shopping ... [more ▼]The novel Coronavirus (COVID-19) impacted daily life for residents of the majority of countries worldwide. In this this research note, we explore how the pandemic is changing religious-oriented shopping with a focus on Muslim shopping. While supermarkets provided online shopping and home delivery services, Islamic store, as small business, could not opt for such services in Belgium and many other countries. Therefore, we designed and conducted a consumer survey with a special target of Muslim shoppers between April 27 and May 6 2020 in all Belgium regions. We found that despite stay-at-home directives that is effective since early March 2020, Muslims are still leaving their homes to buy Islamic groceries “Halal”. Most importantly, the daily pattern of shopping has significantly been changed, which helped in reducing the density of shoppers in the stores [less ▲]Detailed reference viewed: 35 (4 ULiège) La lutte contre les maladies nouvelles dans le monde gréco-romainMarganne, Marie-Hélène E-print/Working paper (2020)Review of methods used to combat epidemics in the Graeco-Roman world.Detailed reference viewed: 17 (1 ULiège) Fermeture des frontières nationales : récits en territoire transfrontalierCaesar, Beate; Dorkel, Nicolas; Marbehant, Sylvain et alE-print/Working paper (2020)Detailed reference viewed: 53 (15 ULiège) Thrombotic microvascular injury is not mediated by thrombotic microangiopathy despite systemic complement activation in Covid-19 patientsDE VOEGHT, Adrien ; CALMES, Doriane ; BECK, Florian et alE-print/Working paper (2020)Detailed reference viewed: 47 (24 ULiège) Entretien avec Côme Martin-Karl : « peut-on écrire après Duras ? »Lansmans, Alexandre E-print/Working paper (2020)Detailed reference viewed: 26 (0 ULiège) 新型コロナウィルス時代の情熱とはBadir, Sémir E-print/Working paper (2020)Detailed reference viewed: 63 (1 ULiège) A bio-inspired bistable recurrent cell allows for long-lasting memoryVecoven, Nicolas ; Ernst, Damien ; Drion, Guillaume E-print/Working paper (2020)Recurrent neural networks (RNNs) provide state-of-the-art performances in a wide variety of tasks that require memory. These performances can often be achieved thanks to gated recurrent cells such as ... [more ▼]Recurrent neural networks (RNNs) provide state-of-the-art performances in a wide variety of tasks that require memory. These performances can often be achieved thanks to gated recurrent cells such as gated recurrent units (GRU) and long short-term memory (LSTM). Standard gated cells share a layer internal state to store information at the network level, and long term memory is shaped by network-wide recurrent connection weights. Biological neurons on the other hand are capable of holding information at the cellular level for an arbitrary long amount of time through a process called bistability. Through bistability, cells can stabilize to different stable states depending on their own past state and inputs, which permits the durable storing of past information in neuron state. In this work, we take inspiration from biological neuron bistability to embed RNNs with long-lasting memory at the cellular level. This leads to the introduction of a new bistable biologically-inspired recurrent cell that is shown to strongly improves RNN performance on time-series which require very long memory, despite using only cellular connections (all recurrent connections are from neurons to themselves, i.e. a neuron state is not influenced by the state of other neurons). Furthermore, equipping this cell with recurrent neuromodulation permits to link them to standard GRU cells, taking a step towards the biological plausibility of GRU. [less ▲]Detailed reference viewed: 87 (11 ULiège) Biochemical and structural insights into the activation of PBP1b by the essential domain of FtsNBoes, Adrien ; Kerff, Frédéric ; Herman, Raphaël et alE-print/Working paper (2020)Detailed reference viewed: 46 (8 ULiège) Learning optimal environments using projected stochastic gradient ascentBolland, Adrien ; Boukas, Ioannis ; Cornet, François et alE-print/Working paper (2020)In this work, we propose a new methodology for jointly sizing a dynamical system and designing its control law. First, the problem is formalized by considering parametrized reinforcement learning ... [more ▼]In this work, we propose a new methodology for jointly sizing a dynamical system and designing its control law. First, the problem is formalized by considering parametrized reinforcement learning environments and parametrized policies. The objective of the optimization problem is to jointly find a control policy and an environment over the joint hypothesis space of parameters such that the sum of rewards gathered by the policy in this environment is maximal. The optimization problem is then addressed by generalizing the direct policy search algorithms to an algorithm we call Direct Environment Search with (projected stochastic) Gradient Ascent (DESGA). We illustrate the performance of DESGA on two benchmarks. First, we consider a parametrized space of Mass-Spring-Damper (MSD) environments and control policies. Then, we use our algorithm for optimizing the size of the components and the operation of a small-scale autonomous energy system, i.e. a solar off-grid microgrid, composed of photovoltaic panels, batteries, etc. On both benchmarks, we compare the results of the execution of DESGA with a theoretical upper-bound on the expected return. Furthermore, the performance of DESGA is compared to an alternative algorithm. The latter performs a grid discretization of the environment's hypothesis space and applies the REINFORCE algorithm to identify pairs of environments and policies resulting in a high expected return. The choice of this algorithm is also discussed and motivated. On both benchmarks, we show that DESGA and the alternative algorithm result in a set of parameters for which the expected return is nearly equal to its theoretical upper-bound. Nevertheless, the execution of DESGA is much less computationally costly. [less ▲]Detailed reference viewed: 385 (21 ULiège) A phylodynamic workflow to rapidly gain insights into the dispersal history and dynamics of SARS-CoV-2 lineagesDellicour, Simon; Durkin, Keith ; Hong, Samuel et alE-print/Working paper (2020)Since the start of the COVID-19 pandemic, an unprecedented number of genomic sequences of the causative virus (SARS-CoV-2) have been publicly released. The resulting volume of available genetic data ... [more ▼]Since the start of the COVID-19 pandemic, an unprecedented number of genomic sequences of the causative virus (SARS-CoV-2) have been publicly released. The resulting volume of available genetic data presents a unique opportunity to gain real-time insights into the pandemic, but also a daunting computational hurdle if analysed with gold-standard phylogeographic methods. We here describe and apply an analytical pipeline that is a compromise between fast and rigorous analytical steps. As a proof of concept, we focus on Belgium, one of the countries with the highest spatial density of sequenced SARS-CoV-2 genomes. At the global scale, our analyses confirm the importance of external introduction events in establishing transmission chains in the country. At the country scale, our spatially-explicit phylogeographic analyses highlight an impact of the national lockdown of mid-March on the dispersal velocity of viral lineages. Our pipeline has the potential to be quickly applied to other countries or regions, with key benefits in complementing epidemiological analyses in assessing the impact of intervention measures or their progressive easement. [less ▲]Detailed reference viewed: 88 (21 ULiège) When and How Does Law Effectively Reduce the Practice of Female Genital Mutilation/Cutting: A crossborder Study in Burkina Faso and Mali [Policy Brief]Wouango, Joséphine ; Ostermann, L. Susan; Mwanga, DanielE-print/Working paper (2020)This policy brief summarises key findings from a cross-border study of two neighbouring countries: Burkina Faso, which has a strong FGM/C law, and Mali, which has no specific FGM/C law (Wouango, Ostermann ... [more ▼]This policy brief summarises key findings from a cross-border study of two neighbouring countries: Burkina Faso, which has a strong FGM/C law, and Mali, which has no specific FGM/C law (Wouango, Ostermann, and Mwanga 2020). The aim of the cross-border study was to explore and compare attitudes and tendencies towards obeying the law and continuing FGM/C practises and to understand the effectiveness of criminal law in combatting FGM/C in both countries. [less ▲]Detailed reference viewed: 46 (3 ULiège) Dans quelles conditions la loi est-elle efficace pour réduire la pratique des mutilations génitales féminines/excision: Une étude transfrontalière au Burkina Faso et au Mali [Policy Brief]Wouango, Joséphine ; Ostermann, Susan; Mwanga, DanielE-print/Working paper (2020)Cette note de synthèse résume les principales conclusions d'une étude transfrontalière portant sur deux pays voisins : le Burkina Faso, qui dispose d'une loi forte sur les MGF/E, et le Mali, qui n'a pas ... [more ▼]Cette note de synthèse résume les principales conclusions d'une étude transfrontalière portant sur deux pays voisins : le Burkina Faso, qui dispose d'une loi forte sur les MGF/E, et le Mali, qui n'a pas de loi spécifique sur les MGF/E (Wouango, Ostermann, et Mwanga 2020). Les objectifs de l'étude transfrontalière étaient d'explorer et de comparer les attitudes et les tendances en matière de respect de la loi et de poursuite de la pratique des MGF/E, et de comprendre l'efficacité du droit pénal dans la lutte contre les MGF/E dans les deux pays. [less ▲]Detailed reference viewed: 66 (3 ULiège) Évaluer les effets des différentes mesures de lutte contre le Covid-19, mission impossible?Paul, Elisabeth ; Ridde, ValéryE-print/Working paper (2020)Detailed reference viewed: 52 (2 ULiège) Long Way to Universal Health Coverage (UHC): Are Policy Dialogue Processes Appropriate to Negotiate Trade-Offs in Africa? The Cases of Benin and SenegalPaul, Elisabeth ; Fecher-Bourgeois, Fabienne ; Deville, Céline et alE-print/Working paper (2020)The numerous stakeholders involved in the development of universal health coverage (UHC) policies are likely to have diverging interests about which dimensions to prioritize, hence the importance of ... [more ▼]The numerous stakeholders involved in the development of universal health coverage (UHC) policies are likely to have diverging interests about which dimensions to prioritize, hence the importance of ensuring an effective and transparent policy dialogue. This paper aims to investigate whether or not UHC policy dialogue processes are functioning well in Benin and Senegal. Based on a literature review, we have identified a number of characteristics guaranteeing the quality of policy dialogue processes, which we have integrated into an analytical grid. The quality criteria identified were classified along four dimensions: stakeholder participation, dialogue/negotiation process, quality of situation analysis and decision criteria, and results from the negotiation process. Based on data collected through documentary review, interviews, an electronic survey and the authors’ own experience, we applied that analytical grid to the cases of Benin and Senegal. In both countries, the policy dialogue processes are largely imperfect in terms of many of the quality criteria identified. Decisions were made under strong political leadership, ensuring government coordination and ownership, and strong emphasis has been put on expanding financial risk protection. Yet, both countries perform poorly in a number of dimensions, especially with regards to conflicts of interest, transparency and accountability. None of them has really institutionalized a UHC policy dialogue process, and the UHC policymaking processes have actually bypassed existing health sector coordination mechanisms. The two countries perform well regarding the quality of situation analysis. A small (in the case of Benin) or broader (in the case of Senegal) governmental coalition managed to impose its views, given insufficient stakeholder participation. Policy networks were particularly influential in Senegal. Overall, there are important gaps that reduce the quality of UHC policy dialogue processes, hence explaining the weaknesses in their results in terms of transparency and accountability. Our analytical framework enables us to identify rooms for improvement with regard to country-led negotiation processes relating to UHC. [less ▲]Detailed reference viewed: 62 (5 ULiège) High Order Relaxation Methods for Co-simulation of Finite Element and Circuit SolversNshimiyimana, Jean de Dieu ; Plumier, Frédéric; Ndagije, Charles et alE-print/Working paper (2020)Coupled problems result in very stiff problems whose char- acteristic parameters differ with several orders in magni- tude. For such complex problems, solving them monolith- ically becomes prohibitive ... [more ▼]Coupled problems result in very stiff problems whose char- acteristic parameters differ with several orders in magni- tude. For such complex problems, solving them monolith- ically becomes prohibitive. Since nowadays there are op- timized solvers for particular problems, solving uncoupled problems becomes easy since each can be solved indepen- dently with its dedicated optimized tools. Therefore the co-simulation of the sub-problems solvers is encouraged. The design of the transmission coupling conditions between solvers plays a fundamental role. The current paper applies the waveform relaxation methods for co-simulation of the finite element and circuit solvers, investigate the contribu- tion of higher order integration methods and also consid- ers the the theoretical modelling of a boost converter. The method is illustrated on a coupled finite element inductor and a boost converter and focuses on the comparison of the transmission coupling conditions based on the waveform iteration numbers between the two sub-solvers. We demon- strate that for lightly coupled systems the dynamic itera- tions between the sub-solvers depends much on the inter- nal integrators in individual sub-solvers whereas for tightly coupled systems it depends also to the kind of transmission coupling conditions. [less ▲]Detailed reference viewed: 41 (1 ULiège) Luciano Curreri e la letteraturaCurreri, Luciano E-print/Working paper (2020)Detailed reference viewed: 81 (18 ULiège) SPHERE+: Imaging young Jupiters down to the snowlineBoccaletti, A.; Chauvin, G.; Mouillet, D. et alE-print/Working paper (2020)SPHERE (Beuzit et al,. 2019) has now been in operation at the VLT for more than 5 years, demonstrating a high level of performance. SPHERE has produced outstanding results using a variety of operating ... [more ▼]SPHERE (Beuzit et al,. 2019) has now been in operation at the VLT for more than 5 years, demonstrating a high level of performance. SPHERE has produced outstanding results using a variety of operating modes, primarily in the field of direct imaging of exoplanetary systems, focusing on exoplanets as point sources and circumstellar disks as extended objects. The achievements obtained thus far with SPHERE (~200 refereed publications) in different areas (exoplanets, disks, solar system, stellar physics...) have motivated a large consortium to propose an even more ambitious set of science cases, and its corresponding technical implementation in the form of an upgrade. The SPHERE+ project capitalizes on the expertise and lessons learned from SPHERE to push high contrast imaging performance to its limits on the VLT 8m-telescope. The scientific program of SPHERE+ described in this document will open a new and compelling scientific window for the upcoming decade in strong synergy with ground-based facilities (VLT/I, ELT, ALMA, and SKA) and space missions (Gaia, JWST, PLATO and WFIRST). While SPHERE has sampled the outer parts of planetary systems beyond a few tens of AU, SPHERE+ will dig into the inner regions around stars to reveal and characterize by mean of spectroscopy the giant planet population down to the snow line. Building on SPHERE's scientific heritage and resounding success, SPHERE+ will be a dedicated survey instrument which will strengthen the leadership of ESO and the European community in the very competitive field of direct imaging of exoplanetary systems. With enhanced capabilities, it will enable an even broader diversity of science cases including the study of the solar system, the birth and death of stars and the exploration of the inner regions of active galactic nuclei. [less ▲]Detailed reference viewed: 30 (1 ULiège) Note relative à l’Agenda urbain de l’UELejeune, Zoé ; Claeys, Dorian E-print/Working paper (2020)Cette note explique le processus de l'Agenda urbain de l'UE pour toute personne ou autorité intéressée de mieux comprendre la dynamique.Detailed reference viewed: 33 (1 ULiège) Electron-lattice interplays in LaMnO 3 from canonical Jahn-Teller distortion notationsSchmitt, Michaël ; Zhang, Yajun ; Mercy, Alain et alE-print/Working paper (2020)Detailed reference viewed: 48 (21 ULiège) Seraing, ville post-industrielle en pleine reconversion, se penche sur le défi de la réactivation de son bâti vacantLejeune, Zoé E-print/Working paper (2020)Interview avec la ville de Seraing dans le cadre de sa participation au réseau URBACT "AltBau" qui travaille à une stratégie de réactivation des immeubles inoccupés.Detailed reference viewed: 38 (2 ULiège) Immigration, Welfare and Inequality: How Much Does the Labor Market Specification Matter?Docquier, Frédéric; Ikhenaode, Bright Isaac; Scheewel, Hendrik E-print/Working paper (2020)Macroeconomic models are increasingly used to quantify the welfare and inequality effects of immigration in the OECD countries. Existing studies differ in the way they formalize the labor market responses ... [more ▼]Macroeconomic models are increasingly used to quantify the welfare and inequality effects of immigration in the OECD countries. Existing studies differ in the way they formalize the labor market responses for immigrants and natives, which in turn govern the strength of the other transmission channels (e.g., public finances, price index, or total factor productivity). In this paper, we build a general equilibrium model that allows to gauge the role of the labor market specification. We parameterize the model for 20 selected OECD member states and compare several specifications involving different assumptions concerning labor supply decisions, unemployment rates and wage formation, as well as different calibration strategies. Endogenizing unemployment and participation generates slightly more optimistic results. However, these labor market mechanisms do not reverse the findings of models based on simpler assumptions and have little effects on cross-country differences in responses to immigration. The labor market specification is less important than the calibration of the elasticity of substitution between immigrants and natives. [less ▲]Detailed reference viewed: 64 (1 ULiège) La reconnaissance mutuelle des marchandises booste les exportations intra-européennesMatray, Gautier ; Geuzaine, Brieuc E-print/Working paper (2020)Short comment on Regulation 2019/515/UEDetailed reference viewed: 24 (3 ULiège) Le pouvoir poétique des images de cinémaBadir, Sémir E-print/Working paper (2020)Detailed reference viewed: 48 (4 ULiège) Un savant dans l'Ouest : Jean-Charles Houzeau de Lehaie ou l'évolutionnisme nomadeRoyen, Virgile E-print/Working paper (2020)Ce récit raconte l'exil de Jean-Charles Houzeau de Lehaie, astronome belge, dans le Nouveau Monde. Son esprit indépendant et son opposition à l'esclavage dans le contexte de la Guerre de Sécession le ... [more ▼]Ce récit raconte l'exil de Jean-Charles Houzeau de Lehaie, astronome belge, dans le Nouveau Monde. Son esprit indépendant et son opposition à l'esclavage dans le contexte de la Guerre de Sécession le conduisirent régulièrement à arpenter ou vivre en terres sauvages. Au cours de ces pérégrinations exotiques, Houzeau réalisa de nombreuses observations sur la faune, qu'il compila en deux épais volumes, les Études sur les Facultés mentales des animaux comparées à celles de l’Homme. Un livre qui n'ambitionnait pas moins de devancer Darwin lui-même... [less ▲]Detailed reference viewed: 38 (3 ULiège) Blanche est la mortFrankignoulle, Pierre E-print/Working paper (2020)Une nouvelle de 17 pagesDetailed reference viewed: 41 (2 ULiège) Interstellar comet 2I/Borisov as seen by MUSE: C2, NH2 and red CN detectionsBannister, Michele T.; Opitom, Cyrielle; Fitzsimmons, Alan et alE-print/Working paper (2020)We report the clear detection of C$_2$ and of abundant NH$_2$ in the first prominently active interstellar comet, 2I/Borisov. We observed 2I on three nights in November 2019 at optical wavelengths 4800 ... [more ▼]We report the clear detection of C$_2$ and of abundant NH$_2$ in the first prominently active interstellar comet, 2I/Borisov. We observed 2I on three nights in November 2019 at optical wavelengths 4800--9300 Åwith the Multi-Unit Spectroscopic Explorer (MUSE) integral-field spectrograph on the ESO/Very Large Telescope. These data, together with observations close in time from both 0.6-m TRAPPIST telescopes, provide constraints on the production rates of species of gas in 2I's coma. From the MUSE detection on all epochs of several bands of the optical emission of the C$_2$ Swan system, a rich emission spectrum of NH$_2$ with many highly visible bands, and the red (1-0) bandhead of CN, together with violet CN detections by TRAPPIST, we infer production rates of $Q$(C$_2$) = $1.1\times10^{24}$ mol s$^{-1}$, $Q$(NH$_2$) = $4.8\times10^{24}$ mol s$^{-1}$ and $Q$(CN) = $(1.8\pm0.2)\times 10^{24}$ mol s$^{-1}$. In late November at 2.03~au, 2I had a production ratio of C$_2$/CN$=0.61$, only barely carbon-chain depleted, in contrast to earlier reports measured further from the Sun of strong carbon-chain depletion. Thus, 2I has shown evolution in its C$_2$ production rate: a parent molecule reservoir has started sublimating. At $Q$(NH$_2$)/$Q$(CN) = 2.7, this second interstellar object is enriched in NH$_2$, relative to the known Solar System sample. [less ▲]Detailed reference viewed: 30 (2 ULiège) Un risque d'instrumentalisation de l'histoireFranck, Thomas E-print/Working paper (2020)Detailed reference viewed: 57 (6 ULiège) Poesia Visiva: Use a Concrete Mixer. The Vanguard Intermediate Poetry in the 60s and 70s (in Postgraduate Research - Interdisciplinary Italy 1900-2020: Interart/Intermedia - AHRC-funded research project)Minuto, Maria Elena E-print/Working paper (2020)Detailed reference viewed: 23 (2 ULiège) Alzheimer s disease genetic risk and sleep phenotypes: association with more slow-waves and daytime sleepinessMuto, Vincenzo ; Koshmanova, Ekaterina ; Ghaemmaghami, Pouya  et alE-print/Working paper (2020)Detailed reference viewed: 65 (15 ULiège) Genebank Platform: GreenPass puts germplasm distribution in the fast laneMassart, Sébastien ; Major, Michael; Kumar, LavaE-print/Working paper (2020)Detailed reference viewed: 23 (1 ULiège) Modeling multivariate operational losses via copula-based distributions with g-and-h marginals.Bee, Marco; Hambuckers, Julien E-print/Working paper (2020)Detailed reference viewed: 26 (2 ULiège) Notice VANDERRYDT HippolyteGeorges, Martin E-print/Working paper (2020)Biographie et bibliographie de Hippolyte Vanderrydt (1857 – 1929). Ingénieur, enseignant de l'ULB et de l'Université Nouvelle, militant socialiste (POB), premier traducteur en langue française du livre II ... [more ▼]Biographie et bibliographie de Hippolyte Vanderrydt (1857 – 1929). Ingénieur, enseignant de l'ULB et de l'Université Nouvelle, militant socialiste (POB), premier traducteur en langue française du livre II (1900) et III (1901-1902) du Capital de Karl Marx avec Julian Borchardt, corédacteur de la Charte de Quaregnon, collaborateur des journaux Le Peuple et L’Avenir social sous le pseudonyme de « LUX », enseignant à la Centrale d’éducation ouvrière et à l’École ouvrière supérieure. [less ▲]Detailed reference viewed: 80 (5 ULiège) Increased cortical excitability and reduced brain response propagation during attentional lapsesCardone, Paolo ; Van Egroo, Maxime ; Chylinski, Daphné et alE-print/Working paper (2020)Modern lifestyle curtails sleep and increases nighttime work and leisure activities. This has a deleterious impact on vigilance and attention, exacerbating chances of committing attentional lapses, with ... [more ▼]Modern lifestyle curtails sleep and increases nighttime work and leisure activities. This has a deleterious impact on vigilance and attention, exacerbating chances of committing attentional lapses, with potential dramatic outcomes. A full characterization of the brain mechanisms associated with lapses is still lacking. Here, we investigated the brain signature of attentional lapses and assessed whether cortical excitability and brain response propagation were modified during lapses and whether these modifications changed with aging. We compared electroencephalogram (EEG) responses to transcranial magnetic stimulation (TMS) during lapse and no-lapse periods while performing a continuous attentional/vigilance task at night, after usual bedtime. Data were collected in healthy younger (N=12; 18-30 y) and older individuals (N=12; 50- 70 y) of both sexes. Amplitude and slope of the first component of the TMS-Evoked Potential (TEP) and Response Scattering (ReSc) were used to assess cortical excitability and brain response propagation, respectively. In line with our predictions, TEP during lapses was characterized by larger amplitude and slope. We further found that ReSc over the cortical surface was lower during lapses. Importantly, cortical excitability increase and response propagation decrease during lapse did not significantly differ between age groups. These results demonstrate that attentional lapses are associated with transient increase of excitability, and decrease in response propagation and effective connectivity. This pattern is similar to what is observed during sleep, suggesting that lapses reflect a sleep-like phenomenon. These findings could contribute to develop models aimed to predicting and preventing lapses in real life situations. [less ▲]Detailed reference viewed: 44 (5 ULiège) Mental resilience in the Corona lockdown: First empirical insights from EuropeVeer, Ilya; Riepenhausen, Antje; Zerban, Matthias et alE-print/Working paper (2020)Background: The current Corona pandemic is not only a threat to physical health. First data from China and Europe indicate that symptoms of anxiety and depression and perceptions of stress rise ... [more ▼]Background: The current Corona pandemic is not only a threat to physical health. First data from China and Europe indicate that symptoms of anxiety and depression and perceptions of stress rise significantly as a consequence of the pandemic. There are also anecdotal reports of increased domestic violence, divorce, and suicide rates. Hence, the Corona crisis is also a mental health crisis. There is urgent need for knowledge about factors that can protect mental health (resilience factors) in this world-wide crisis, which is different in nature from other crises that have so far been studied in resilience research. Methods: Potential resilience factors, exposure to Corona-specific and general stressors, as well as internalizing symptoms were assessed online in N=5000 adult Europeans. Resilience, as an outcome, was conceptualized as good mental health despite stressor exposure and measured as the inverse residual between actual and predicted symptom total score. Preregistered hypotheses (osf.io/r6btn) were tested with multiple regression models and mediation analyses. Results: Results confirmed our primary hypothesis that positive appraisal style (PAS) is positively associated with resilience(p<0.001). The resilience factor PAS also mediated the positive association between perceived social support (PSS) and resilience (p<0.001). In comparison with other resilience factors, positive appraisal specifically of the consequences of the Corona crisis was the single strongest factor. Conclusions: This research identifies modifiable protective factors that can be targeted by public mental health efforts. Future work will have to identify potential group differences in the effectiveness of these resilience factors, for improved prevention planning [less ▲]Detailed reference viewed: 163 (9 ULiège) Fighting against homesicknessLara Guerrero, Larisa Viridiana E-print/Working paper (2020)Detailed reference viewed: 18 (2 ULiège) Age dating of an early Milky Way merger via asteroseismology of the naked-eye star ν IndiChaplin, W. J.; Serenelli, A. M.; Miglio, A. et alE-print/Working paper (2020)Over the course of its history, the Milky Way has ingested multiple smaller satellite galaxies1. Although these accreted stellar populations can be forensically identified as kinematically distinct ... [more ▼]Over the course of its history, the Milky Way has ingested multiple smaller satellite galaxies1. Although these accreted stellar populations can be forensically identified as kinematically distinct structures within the Galaxy, it is difficult in general to date precisely the age at which any one merger occurred. Recent results have revealed a population of stars that were accreted via the collision of a dwarf galaxy, called Gaia–Enceladus1, leading to substantial pollution of the chemical and dynamical properties of the Milky Way. Here we identify the very bright, naked-eye star ν Indi as an indicator of the age of the early in situ population of the Galaxy. We combine asteroseismic, spectroscopic, astrometric and kinematic observations to show that this metal-poor, alpha-element-rich star was an indigenous member of the halo, and we measure its age to be 11.0 ± 0.7 (stat) ± 0.8 (sys) billion years. The star bears hallmarks consistent with having been kinematically heated by the Gaia–Enceladus collision. Its age implies that the earliest the merger could have begun was 11.6 and 13.2 billion years ago, at 68% and 95% confidence, respectively. Computations based on hierarchical cosmological models slightly reduce the above limits. © 2020, The Author(s), under exclusive licence to Springer Nature Limited. [less ▲]Detailed reference viewed: 44 (11 ULiège) Perturbations in dynamical models of whole-brain activity dissociate between the level and stability of consciousnessSanz Perl; Pallavicini, Carla; Pérez Ipiña, Ignacio et alE-print/Working paper (2020)Detailed reference viewed: 37 (4 ULiège) La visite du Général de Gaulle à Bruxelles (10-11/10/1945), vue par la presse belge francophoneLanneau, Catherine E-print/Working paper (2020)Detailed reference viewed: 22 (0 ULiège) Risk optimizations on basis portfolios: The role of sortingFays, Boris ; Papageorgiou, Nicolas; Lambert, Marie E-print/Working paper (2020)This paper investigates the mean-variance and diversification properties of risk-based strategies per- formed on style or basis portfolios. We show that the performance of these risk strategies is ... [more ▼]This paper investigates the mean-variance and diversification properties of risk-based strategies per- formed on style or basis portfolios. We show that the performance of these risk strategies is improved when performed on portfolios sorted on characteristics correlated with returns and is highly sensitive to the sorting procedure used to form the basis assets. Whereas the extant literature provides mixed support for the outperformance of smart beta strategies based on scientific diversification, our de- signed strategies outperform both the market model and multifactor model. Our testing framework is based on bootstrapped mean-variance spanning tests and shows valid conclusions when control- ling for multiple testing, transaction costs, and luck from random basis portfolio construction rules. Economically, our results are supported by diversification-based properties. [less ▲]Detailed reference viewed: 31 (2 ULiège) Extremal connectedness and systemic risk of hedge fundsMhalla, Linda; Hambuckers, Julien ; Lambert, Marie E-print/Working paper (2020)We propose a dynamic measure of extremal connectedness across investment styles of hedge funds. Using multivariate extreme value regression techniques, we estimate this measure conditional on factors ... [more ▼]We propose a dynamic measure of extremal connectedness across investment styles of hedge funds. Using multivariate extreme value regression techniques, we estimate this measure conditional on factors reflecting the economic uncertainty and the state of the financial markets, and derive several systemic risk indicators. Empirically, we study the dynamics of tail dependencies between investment strategies in the HFR database. We show that during crisis periods, some pairs of strategies display an increase in their extremal connectedness. Our results highlight that a proactive regulatory framework should account for the dynamic nature of the tail dependence and its link with financial stress [less ▲]Detailed reference viewed: 40 (5 ULiège) LED light gradient as a screening tool for light quality responses in model plant speciesLejeune, Pierre ; Fratamico, Anthony ; Bouché, Frédéric et alE-print/Working paper (2020)Current developments in light-emitting diodes (LEDs) technologies have opened new perspectives for sustainable and highly efficient indoor cultivation. The introduction of LEDs not only allows a reduction ... [more ▼]Current developments in light-emitting diodes (LEDs) technologies have opened new perspectives for sustainable and highly efficient indoor cultivation. The introduction of LEDs not only allows a reduction in the production costs on a quantitative level, it also offers opportunities to manipulate and optimise qualitative traits. Indeed, while plants respond strongest to red and blue lights for photosynthesis, the whole light spectrum has an effect on plant shape, development, and chemical composition. In order to evaluate LEDs as an alternative to traditional lighting sources, the species-specific plant responses to distinct wavelengths need to be evaluated under controlled conditions. Here, we tested the possibility to use light composition gradients in combination with semi-automated phenotyping to rapidly explore the phenotypic responses of different species to variations in the light spectrum provided by LED sources. Plants of seven different species (Arabidopsis thaliana, Ocimum basilicum, Solanum lycopersicum, Brachypodium distachyon, Oryza sativa, Euphorbia peplus, Setaria viridis) were grown under standard white fluorescent light for 30 days, then transferred to a Red:Blue gradient for another 30 days and finally returned to white light. In all species, differences in terms of dimension, shape, and color were rapidly observed across the gradient and the overall response was widely species-dependent. The experiment yielded large amounts of imaging-based phenotypic data and we suggest simple data analysis methods to aggregate the results and facilitate comparisons between species. Similar experimental setups will help achieve rapid environmental optimization, screen new crop species and genotypes, or develop new gene discovery strategies. [less ▲]Detailed reference viewed: 52 (15 ULiège) Remote free-carrier screening to boost the mobility of of Fröhlich-limited 2D semiconductorsSohier, Thibault ; Gibertini, Marco; Verstraete, Matthieu E-print/Working paper (2020)Van der Waals heterostructures provide a versatile tool to not only protect or control, but also enhance the properties of a 2D material. We use ab initio calculations and semi-analytical models to find ... [more ▼]Van der Waals heterostructures provide a versatile tool to not only protect or control, but also enhance the properties of a 2D material. We use ab initio calculations and semi-analytical models to find strategies which boost the mobility of a current-carrying 2D semiconductor within an heterostructure. Free-carrier screening from a metallic "screener" layer remotely suppresses electron-phonon interactions in the current-carrying layer. This concept is most effective in 2D semiconductors whose scattering is dominated by screenable electron-phonon interactions, and in particular the Fröhlich coupling to polar-optical phonons. Such materials are common and characterised by overall low mobilities in the small doping limit, and much higher ones when the 2D material is doped enough for electron-phonon interactions to be screened by its own free-carriers. We use GaSe as a prototype and place it in a heterostructure with doped graphene as the "screener" layer and BN as a separator. We develop an approach to determine the electrostatic response of any heterostructure by combining the responses of the individual layers computed within density-functional perturbation theory. Remote screening from graphene can suppress the long-wavelength Fröhlich interaction, leading to an almost constant mobility around 500 to 600 cm2/Vs for carrier densities in GaSe from 10^11 to 10^13 cm−2. Notably, the low-doping mobility is enhanced by a factor 3. This remote free-carrier screening is more efficient than more conventional manipulation of the dielectric environment, and it is most efficient when the separator (BN) is thin. [less ▲]Detailed reference viewed: 27 (1 ULiège) Using Biological Signals for Mass Recalibration of Mass Spectrometry Imaging DataLa Rocca, Raphaël ; Kune, Christopher ; Tiquet, Mathieu et alE-print/Working paper (2020)Detailed reference viewed: 41 (2 ULiège) Transcriptional regulation of ZIP genes is independent of local zinc status in Brachypodium shoots upon zinc deficiency and resupplyAmini, Sahand ; Arsova, Borjana; Gobert, Sylvie et alE-print/Working paper (2020)Detailed reference viewed: 25 (2 ULiège) Interest rate differentials and the dynamic asymmetry of exchange ratesHambuckers, Julien ; Ulm, MarenE-print/Working paper (2020)We propose a unified econometric strategy to revisit the informational content of interest rates differentials (IRD) for predicting exchange rates. The novelty of our approach consists in allowing for a ... [more ▼]We propose a unified econometric strategy to revisit the informational content of interest rates differentials (IRD) for predicting exchange rates. The novelty of our approach consists in allowing for a time-varying asymmetry component in the conditional distribution of the depreciation rate, therefore explicitly modeling the link between interest rates and the likelihood of a depreciation. To assess the economic significance of IRD as a predictor, we derive a directional forecasting procedure from our model and apply this technique to daily exchange rates of the Euro and the Swiss Franc. We document in-sample and out-of-sample performances significantly superior to benchmark models, both in terms of sign forecasts and trading profits. Overall, we find the dynamic asymmetry component to be driven by interest rate differentials, but also by general uncertainty and past unexpected shocks. These findings empirically confirm currency crash theories for recent time periods, suggesting that the larger the difference between interest rates, the more likely the high yield currency appreciates but also exhibit larger depreciation risks. [less ▲]Detailed reference viewed: 44 (3 ULiège) Figures du retraducteurBelleflamme, Clémence E-print/Working paper (2019)Compte-rendu de la journée d'étude "Figures du retraducteur" organisée par le CIRTI le 11 décembre 2019 à l'Université de Liège.Detailed reference viewed: 25 (1 ULiège) De retraducción a recepción...Belleflamme, Clémence E-print/Working paper (2019)Informe del coloquio “Figures du retraducteur” (Figuras del retraductor), organizado por el Centro Interdisciplinar de Investigación en Traducción e Interpretación (CIRTI), que tuvo lugar el 11 de ... [more ▼]Informe del coloquio “Figures du retraducteur” (Figuras del retraductor), organizado por el Centro Interdisciplinar de Investigación en Traducción e Interpretación (CIRTI), que tuvo lugar el 11 de diciembre de 2019 en la Universidad de Lieja. En él se dieron cita traductores y traductólogos para reflexionar sobre la retraducción —entendida como una nueva traducción de un texto que ya se ha traducido a la misma lengua con anterioridad— y, más particularmente, sobre las distintas facetas de la tarea del retraductor. Se pasa revista a las distintas ponencias, con un enfoque en el vínculo que se puede establecer entre retraducción y recepción. [less ▲]Detailed reference viewed: 28 (2 ULiège) MCMCI: A code to fully characterise an exoplanetary systemBonfanti, Andrea ; Gillon, Michaël E-print/Working paper (2019)Useful information can be retrieved by analysing the transit light curve of a planet-hosting star or induced radial velocity oscillations. However, inferring the physical parameters of the planet, such as ... [more ▼]Useful information can be retrieved by analysing the transit light curve of a planet-hosting star or induced radial velocity oscillations. However, inferring the physical parameters of the planet, such as mass, size, and semi-major axis, requires preliminary knowledge of some parameters of the host star, especially its mass or radius, which are generally inferred through theoretical evolutionary models. We seek to present and test a whole algorithm devoted to the complete characterisation of an exoplanetary system thanks to the global analysis of photometric or radial velocity time series combined with observational stellar parameters derived either from spectroscopy or photometry. We developed an integrated tool called MCMCI. This tool combines the Markov chain Monte Carlo (MCMC) approach of analysing photometric or radial velocity time series with a proper interpolation within stellar evolutionary isochrones and tracks, known as isochrone placement, to be performed at each chain step, to retrieve stellar theoretical parameters such as age, mass, and radius. We tested the MCMCI on the HD 219134 multi-planetary system hosting two transiting rocky super Earths and on WASP-4, which hosts a bloated hot Jupiter. Even considering different input approaches, a final convergence was reached within the code, we found good agreement with the results already stated in the literature and we obtained more precise output parameters, especially concerning planetary masses. The MCMCI tool offers the opportunity to perform an integrated analysis of an exoplanetary system without splitting it into the preliminary stellar characterisation through theoretical models. Rather this approach favours a close interaction between light curve analysis and isochrones, so that the parameters recovered at each step of the MCMC enter as inputs for purposes of isochrone placement. [less ▲]Detailed reference viewed: 31 (1 ULiège) One-dimensional Kronig-Penney superlattices at the LaAlO$_3$/SrTiO$_3$ interfaceBriggeman, Megan; Lee, Hyungwoo; Lee, Jung-Woo et alE-print/Working paper (2019)The paradigm of electrons interacting with a periodic lattice potential is central to solid-state physics. Semiconductor heterostructures and ultracold neutral atomic lattices capture many of the ... [more ▼]The paradigm of electrons interacting with a periodic lattice potential is central to solid-state physics. Semiconductor heterostructures and ultracold neutral atomic lattices capture many of the essential properties of 1D electronic systems. However, fully one-dimensional superlattices are highly challenging to fabricate in the solid state due to the inherently small length scales involved. Conductive atomic-force microscope (c-AFM) lithography has recently been demonstrated to create ballistic few-mode electron waveguides with highly quantized conductance and strongly attractive electron-electron interactions. Here we show that artificial Kronig-Penney-like superlattice potentials can be imposed on such waveguides, introducing a new superlattice spacing that can be made comparable to the mean separation between electrons. The imposed superlattice potential "fractures" the electronic subbands into a manifold of new subbands with magnetically-tunable fractional conductance (in units of $e^2/h$). The lowest $G=2e^2/h$ plateau, associated with ballistic transport of spin-singlet electron pairs, is stable against de-pairing up to the highest magnetic fields explored ($|B|=16$ T). A 1D model of the system suggests that an engineered spin-orbit interaction in the superlattice contributes to the enhanced pairing observed in the devices. These findings represent an important advance in the ability to design new families of quantum materials with emergent properties, and mark a milestone in the development of a solid-state 1D quantum simulation platform. [less ▲]Detailed reference viewed: 23 (3 ULiège) Un croyant grincheux. Recension de Romans et nouvelles de J.-K. HuysmansLansmans, Alexandre E-print/Working paper (2019)Detailed reference viewed: 19 (0 ULiège) Een gedicht belicht. Over De moordenaars van Paul van OstaijenSpinoy, Erik E-print/Working paper (2019)This text offers a rereading of the well-known poem 'De moordenaars' by Flemish expressionist poet Paul van Ostaijen in light of the numerous references to contemporary popular culture that can be found ... [more ▼]This text offers a rereading of the well-known poem 'De moordenaars' by Flemish expressionist poet Paul van Ostaijen in light of the numerous references to contemporary popular culture that can be found in the text. [less ▲]Detailed reference viewed: 77 (0 ULiège)