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See detailInvesting in Crises
Penasse, Julien UL

Scientific Conference (2021)

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See detailPower and Bandwidth Minimization for Demand-Aware GEO Satellite Systems
Abdu, Tedros Salih UL; Kisseleff, Steven UL; Lagunas, Eva UL et al

Scientific Conference (2021)

Smart radio resource allocation combined with the recent advances of digital payloads will allow to control the transmit power and bandwidth of the satellites depending on the demand and the channel ... [more ▼]

Smart radio resource allocation combined with the recent advances of digital payloads will allow to control the transmit power and bandwidth of the satellites depending on the demand and the channel conditions of users. The system flexibility is important not only to handle divergent demand requirements but also to efficiently utilize the limited and expensive satellite resources. In this paper, we propose a demand-aware smart radio resource allocation technique, where the transmit power and the bandwidth of the GEO satellite are minimized while satisfying the user demand. The formulated optimization problem is non-convex mixed-integer nonlinear program which is difficult to solve. Hence, we apply a quadratic transform to solve the problem iteratively. The numerical results showed that the proposed scheme outperforms the benchmark schemes in terms of bandwidth utilization while accurately providing capacity-ondemand. [less ▲]

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See detailBEGYN: Auswirkungen von Bewegung und sportlicher Aktivität bei gynäkologischen Krebspatienten auf Lebensqualität, Körperzusammensetzung und prognoserelevante Biomarker
Zemlin, Cosima; Stuhlert, Caroline; Schleicher, Julia Theresa et al

Scientific Conference (2021)

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See detailDynamic Resource Assignment for Heterogeneous Services in 5G Downlink Under Imperfect CSI
Korrai, Praveenkumar UL; Lagunas, Eva UL; Shree Krishna Sharma et al

Scientific Conference (2021)

This paper addresses the radio access network (RAN) resource slicing problem in the context of the joint allocation of transmit powers and time-frequency resource blocks (RBs) in the 5G system consisting ... [more ▼]

This paper addresses the radio access network (RAN) resource slicing problem in the context of the joint allocation of transmit powers and time-frequency resource blocks (RBs) in the 5G system consisting of ultra-reliable and low-latency communication (URLLC) and enhanced mobile broadband (eMBB) users. Specifically, we formulate a modulation and coding scheme (MCS) based optimization problem to maximize the sum goodput of eMBB users while satisfying URLLC and eMBB users' QoS requirements. The proposed scheme considers the impact of imperfect channel state information (CSI) and the active user's queue status for the dynamic assignment of radio resources to the heterogeneous users according to its demand. The resulting mixed-integer non-convex problem is first transformed into a tractable form by exploiting the probabilistic to non-probabilistic conversion, Big-M theory, and difference-of-convex (DC) programming. Later, the transformed problem is solved using the successive convex approximation (SCA) based iterative algorithm. Our simulation results illustrate the superiority of the proposed algorithm compared to the baseline methods in terms of eMBB rate, latency in delivering the URLLC packets, and total power consumption. [less ▲]

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See detailThe supply of hours worked and fluctuations between growth regimes
Irmen, Andreas UL; Iong, Ka-Kit UL

Scientific Conference (2021)

Declining hours of work per worker in conjunction with a growing work force may give rise to fluctuations between growth regimes. This is shown in an overlapping generations model with two-period lived ... [more ▼]

Declining hours of work per worker in conjunction with a growing work force may give rise to fluctuations between growth regimes. This is shown in an overlapping generations model with two-period lived individuals endowed with Boppart-Krusell preferences (Boppart and Krusell (2020)). On the supply side, economic growth is due to the expansion of consumption-good varieties through endogenous research. A sufficiently negative equilibrium elasticity of the individual supply of hours worked to an expansion in the set of consumption-good varieties destabilizes the steady state so that equilibrium trajectories may fluctuate between two growth regimes, one with and the other without an active research sector. Fluctuations affect intergenerational welfare, the evolution of GDP, and the functional income distribution. A stabilization policy can shift the economy onto its steady-state path. Fluctuations arise for empirically reasonable parameter constellations. The economics of fluctuations between growth regimes is linked to the intergenerational trade of shares and their pricing in the asset market. [less ▲]

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See detailPrecoding-Aided Bandwidth Optimization for High Throughput Satellite Systems
Abdu, Tedros Salih UL; Lei, Lei UL; Kisseleff, Steven UL et al

Scientific Conference (2021)

Linear precoding boosts the spectral efficiency of the satellite system by mitigating the interference signal. Typically, all users are precoded and share the same bandwidth regardless of the user demand ... [more ▼]

Linear precoding boosts the spectral efficiency of the satellite system by mitigating the interference signal. Typically, all users are precoded and share the same bandwidth regardless of the user demand. This bandwidth utilization is not efficient since the user demand permanently varies. Hence, demand-aware bandwidth allocation with linear precoding is promising. In this paper, we exploited the synergy of linear precoding and flexible bandwidth allocation for geostationary (GEO) high throughput satellite systems. We formulate an optimization problem with the goal to satisfy the demand by taking into account that multiple precoded user groups can share the different bandwidth chunks. Hence, optimal beam groups are selected with minimum bandwidth requirement to match the per beam demand. The simulation results show that the proposed method of combining bandwidth allocation and linear precoding has better bandwidth efficiency and demand satisfaction than benchmark schemes. [less ▲]

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See detailRelationships between quantum IND-CPA notions
Ebrahimi, Ehsan UL; Unruh, Dominique; Carstens, Tore et al

Scientific Conference (2021)

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See detailWind Music during the Nazi occupation in Luxembourg from 1940 to 1944
Sagrillo, Damien François UL

Scientific Conference (2020, December 18)

From 1940 to 1944 Luxembourg was governed by the National Socialist regime. Besides the many human destinies, social life also had to bear the consequences. The keyword is "Gleichschaltung" (co-ordination ... [more ▼]

From 1940 to 1944 Luxembourg was governed by the National Socialist regime. Besides the many human destinies, social life also had to bear the consequences. The keyword is "Gleichschaltung" (co-ordination). In my lecture, I will provide some examples to show how this abusive and arbitrary interference affected the activities of the music associations. [less ▲]

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See detailMultipath Mitigation Maps feasibility and applicability as an International GNSS Service product
Hunegnaw, Addisu UL; Teferle, Felix Norman UL; Elgered, Gunnar et al

Scientific Conference (2020, December 17)

There have been many advances in the modeling of Global Navigation Satellite System (GNSS) observables when estimating position and other parameters of interest. Some of these bias models are related to ... [more ▼]

There have been many advances in the modeling of Global Navigation Satellite System (GNSS) observables when estimating position and other parameters of interest. Some of these bias models are related to improvements of reference frames, phase center offsets and variations of transmitter and receiver antennas, satellite orbits and clocks, and troposphere. Nonetheless, multipath remains for the most part an unmodelled source of error which causes range errors in the GNSS observations. The associated effects show highly localized features and have a different impact for each receiver and antenna. Multipath errors can propagate, can cause in-situ position biases and are also contributing to the prevalent draconitic harmonic signals. In order to mitigate the problem we generate site-specific corrections by employing a suitable averaging scheme for the stacking of carrier phase residuals. Our processing is based on globally distributed static multi-GNSS observations using several scientific GNSS software packages (Bernese GNSS Software, NAPEOS, GAMIT-GLOBK, and CSRS-PPP). Our multipath stacking maps (MPS) use the stacking of carrier phase residuals generated by variable azimuth cell size (congruent cells) and by allocating carrier phase residuals in each cell to generate the correction maps, unlike the standard fixed azimuth cell resolution approaches. This reduces the binning of fewer residuals at higher elevation angles. Before stacking, we also apply rigorous statistical outlier screening tests for each one-way post-fit carrier phase residual assigned to each of the congruent cells. We thus correct the multipath effects by subtracting the stacked multipath map from the post-fit carrier phase residual. Using this technique we produce a model available in the form of the Antenna Exchange (ANTEX) file format, that can potentially be implemented in routine GNSS analysis with no or little additional overhead for individual analysis centers (ACs). In this study, we assess the feasibility and applicability of the MPS maps as an International GNSS Service (IGS) product for routine GNSS analysis. We demonstrate the multipath stacking technique to result in a significant reduction of the variation in the one-way post-fit carrier phase residuals from multi-GNSS observations. [less ▲]

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See detailVertical Land Movements and Sea Level Changes on South Georgia, South Atlantic Ocean: Results from 7 Years of Geodetic and Oceanographic Observations on a Remote Island
Teferle, Felix Norman UL; Hunegnaw, Addisu UL; Hibbert, Angela et al

Scientific Conference (2020, December 16)

South Georgia Island in the South Atlantic Ocean, is a small remote land mass that supports various ground-based instrumental observations (Global Navigation Satellite System (GNSS), tide gauge ... [more ▼]

South Georgia Island in the South Atlantic Ocean, is a small remote land mass that supports various ground-based instrumental observations (Global Navigation Satellite System (GNSS), tide gauge, meteorological and seismic) in an otherwise largely under sampled oceanic region. Moreover, the South Atlantic Ocean plays an important role in global ocean circulation, con-necting the deep thermohaline circulation of the North Atlantic and Indian Oceans, whilst also linking to the Antarctic Circumpolar Current in the South, where the lack of continental barriers allows a free exchange of water between the major ocean basins. Hence, South Georgia po-tentially lies within a region susceptible to climatic changes before these can be felt further afield. In 2013 and 2014 a total of five GNSS stations were installed covering the area of the main island (approximately 170 x 50 km) with two of those being located close to the King Edward Point (KEP) Research Station and the GLOSS tide gauge (ID 187). Furthermore, precise levelling campaigns in 2013, 2014, 2017 and 2020 supported the analysis of local ground instabilities near the tide gauge. Through these activities the tide gauge datum within the Permanent Ser-vice for Mean Sea Level (PSMSL) has been established, which in turn, makes the derived KEP mean sea level (MSL) record highly valuable for long-term studies and satellite altimetry cali-brations. In this study, we will present the vertical land movement estimates from seven years of GNSS observations, five precise levelling campaigns, and will discuss their impact on the sea level record from the KEP tide gauge and nearby satellite altimetry sea surface heights. Our results confirm uplift all over South Georgia Island while the area at KEP and particularly the jetty with tide gauge are subsiding relative to the rest of the island. Using this information we correct the MSL record for the vertical land movements and investigate its signals together with those from nearby satellite altimetry tracks. [less ▲]

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See detailOutdoor STEAM integrated framework in elementary schools in Luxembourg using MathCityMap and GeoGebra 3D Calculator
Haas, Ben; Kreis, Yves UL; Lavicza, Zsolt

Scientific Conference (2020, December 15)

In elementary schools in Luxemburg, sciences and mathematics are generally taught in class based essentially on textbooks. However, the findings of multiple studies on understanding and applying skills in ... [more ▼]

In elementary schools in Luxemburg, sciences and mathematics are generally taught in class based essentially on textbooks. However, the findings of multiple studies on understanding and applying skills in STEAM (Science, Technology, Engineering, Arts and Mathematics) report that students need hands-on activities on real-world objects. Furthermore, in times of the COVID-19 pandemic, where numerous restrictions and risks dominate teaching inside the classroom, outdoor learning is safer and offers many opportunities. Hence, we created outdoor mathematical trails with a STEAM integrated approach for elementary schools using the free educational software MathCityMap and the dynamic mathematics software GeoGebra 3D. In these outdoor trails, students used a set of promising technologies, i.e. AR (Augmented Reality) or GPS, to support STEAM education. Based on results from our first study on outdoor mathematical trails in June 2020 (in review), we developed and evaluated a framework on outdoor STEAM integrated teaching. This framework was used for further outdoor task and trail creations in elementary schools, which we investigated by conducting semi-structured interviews with students and teachers. Hence, we will present how this framework was used in elementary schools to create outdoor mathematical trails and describe how it affected the students' learning. [less ▲]

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See detailMaking History Together: Public Participation in Museums
Cauvin, Thomas UL; Konstantinou, Katerina; Boccalatte, Paola et al

Scientific Conference (2020, December 15)

The international online symposium brought together scholars, museum professionals and heritage practitioners to discuss how participatory history is constructed, developed, and implemented in museums ... [more ▼]

The international online symposium brought together scholars, museum professionals and heritage practitioners to discuss how participatory history is constructed, developed, and implemented in museums. 'Making History Together: Public Participation in Museums' took place on 15 December 2020 and has brought together participants and case studies from all over the world. Sessions include discussions on co-creation and co-production, community of interpretation, digital public participatory practices, empowerment, and overall impact on making history in museums. [less ▲]

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See detailPatrice Chéreau en marge de la bienséance classique : Le « Récit de Théramène » dans sa mise en scène de Phèdre de Jean Racine (2003, Ateliers Berthier, Théâtre de l'Odéon, Paris)
Deregnoncourt, Marine UL

Scientific Conference (2020, December 14)

Quand il met en scène, en 2003, aux Ateliers Berthier (Théâtre de l’Odéon, Paris, XVIIème), Phèdre de Jean Racine, Patrice Chéreau revient sur le devant de la scène théâtrale en souhaitant ... [more ▼]

Quand il met en scène, en 2003, aux Ateliers Berthier (Théâtre de l’Odéon, Paris, XVIIème), Phèdre de Jean Racine, Patrice Chéreau revient sur le devant de la scène théâtrale en souhaitant contemporanéiser une œuvre considérée, depuis l’année de sa parution (1677), comme la « quintessence de la tragédie française » . Cette volonté d’inscrire cette pièce dans le présent de la création artistique passe notamment par sa lecture singulière du « Récit de Théramène », lequel narre la mort d’Hippolyte. En effet, Patrice Chéreau entend s’opposer à la tradition littéraire de l’énonciation, sous forme d’hypotypose, par une tierce personne - en l’occurrence Théramène, gouverneur du jeune prince - et proposer ainsi une monstration pleinement assumée du corps ensanglanté, morcelé et déchiqueté du corps d’Hippolyte. Reliquat et objet de tous les désirs, le corps atrophié du jeune prince, autour duquel l’intrigue s’est construite, paraît au vu et au su de tous, acteurs comme spectateurs. À l’égard du texte racinien, ce corps apparaît excessif et en surplus vis-à-vis de l’action scénique. Dès lors, un tel parti pris, en marge de la tradition, mérite d’être interrogé, car il remet entièrement en perspective la question de la bienséance classique. Afin de le démontrer, notre réflexion sera divisée en deux parties. La première s’axera précisément sur la bienséance, caractéristique de l’esthétique classique. Dans le cas de ce récit anthologique, nous verrons que Jean Racine se joue lui-même des codes en se référant davantage à Sénèque qu’à Euripide. Le second temps de notre étude cherchera à appréhender le positionnement radical de Patrice Chéreau face à ces présupposés pour, in fine, tenter de comprendre comment ce metteur en scène rompt avec la doctrine classique et offre, par là même, une vision novatrice et inédite - qui deviendra emblématique - de Phèdre de Jean Racine [less ▲]

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See detailUnderstanding through Experimentation: An Experimental Media Archaeological Approach to Early Twentieth-Century Home Movie Making
van der Heijden, Tim UL

Scientific Conference (2020, December 11)

This presentation addresses the question in what ways visual media have contributed to the construction of a specific view on twentieth-century century (family) life by means of an experimental media ... [more ▼]

This presentation addresses the question in what ways visual media have contributed to the construction of a specific view on twentieth-century century (family) life by means of an experimental media archaeological approach to early home movie making. Based on hands-on experiments with an original Ciné-Kodak 16mm film camera from 1930, it will be shown how filming one’s family was never truly a neutral practice of capturing everyday life. Rather, making a home movie should be regarded a highly “co-constructive” practice that includes various social, sensorial, technological and user-related dimensions. The presentation reflects work in progress from the research project “Doing Experimental Media Archaeology” (DEMA) of the Centre for Contemporary and Digital History (C2DH) of the University of Luxembourg: https://dema.uni.lu/. [less ▲]

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See detailLehrende und Schüler im Film: Performanzen, Ansprüche, Begehren und Geniessen in Bildungsprozessen.
Weber, Jean-Marie UL

Scientific Conference (2020, December 05)

Das Kino ist ein pädagogisches Institut, das unsere Fantasien formt. Es sagt uns, wie wir überhaupt begehren können, behauptet der Kulturtheoretiker und Psychoanalytiker Slavoj Zizek. So ist es sinnvoll ... [more ▼]

Das Kino ist ein pädagogisches Institut, das unsere Fantasien formt. Es sagt uns, wie wir überhaupt begehren können, behauptet der Kulturtheoretiker und Psychoanalytiker Slavoj Zizek. So ist es sinnvoll, sich als Lehrerinnen für die filmischen Inszenierungen des Lehrens und Lernens zu interessieren und sich durch sie «an-sprechen» und affizieren zu lassen. Der Workshop gilt als Austausch über markante Ausschnitte in denen Lehrer, Schule oder Unterricht Subjektwerden bzw. in ihrer Subjektivation und Humanisation blockiert sind. Bestimmte Symptome des kollektiven und individuellen Imaginären sollen freigelegt werden. Dabei stellt sich auch die Frage, inwiefern man mit Hilfe dieser (Re)-Inszenierungen des Lehrens auf der Leinwand anthropologische und strukturelle Elemente des Lehrens und von transformatorischen Bildungsprozessen erschließen kann. Besonderes Interesse gilt dabei der Frage, wie Lehrerinnen im Spielfilm Singularität und Kollektivität erfolgreich artikulieren oder dabei scheitern. [less ▲]

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See detailRadial Urban Forms: Lessons from Land Profile Scaling Analyses & Spatial-Explicit Models
Caruso, Geoffrey UL

Scientific Conference (2020, November 25)

We definitely live in an increasingly urban World for half of humanity now lives in cities. Cities provide wealth but also negatively impact the environment and the health of citizens. Arguably the ... [more ▼]

We definitely live in an increasingly urban World for half of humanity now lives in cities. Cities provide wealth but also negatively impact the environment and the health of citizens. Arguably the benefits and costs of cities relate to both their size, in population terms, and their internal structure, in terms of the relative spatial arrangement of built-up and natural land. Much of urban research focusses on very large cities and urban cores. Yet 3 urban human out of 4 live in cities of less than 4 million inhabitants (according to the global GHSL dataset). Similarly, 3 out of 4 in a typical (European) city do not live in its core but beyond (using a 7-8km radius to define core for a city like London or Paris). To address urban sustainability issues and design adaptation policies, these 75% certainly count and, we can argue, also deserve specific attention because of the relative proximity between urban and non-urban (natural) use that smaller cities and suburban (non-core) areas may permit. In this respect, it is key to understand how the internal structure of cities, in particular the form and density of built-up areas and the interwoven green space emerge out of the core up until the fringe. It is also key to understand whether the form of cities, especially density gradients and the share of urbanised/non-urbanised land change with city size. In this talk we draw lessons from 2 research approaches to urban forms: one theoretical that uses spatial micro-economic simulations, and one empirical that uses spatially detailed land use datasets. Our theoretical simulations relate individual behaviour to urban forms while our empirics relate urban forms to city size. Both have in common a radial perspective to cities, i.e. explicitly or implicitly assuming that the accessibility trade-off to a given centre is a key determinant of locations and land uses. In both cases, we look at urbanisation and green space structures and at pollution exposure as an example of impact. [less ▲]

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See detailThe Helpers of Anne Frank - Recontextualising the Rescue of Dutch Jews
Zaagsma, Gerben UL

Scientific Conference (2020, November 24)

This paper sets out to recontextualise the memory of rescue as it pertains to Dutch Jewry during the Holocaust, by focusing on the helpers of Anne Frank and the other Jews in hiding in the Secret Annex ... [more ▼]

This paper sets out to recontextualise the memory of rescue as it pertains to Dutch Jewry during the Holocaust, by focusing on the helpers of Anne Frank and the other Jews in hiding in the Secret Annex. Much in the same way as perceptions of Jews in hiding have been decisively shaped by the story of Anne Frank, not only in the Dutch public imagination but arguably globally, so too the image of help, at least in the Western European and Anglosaxon world, has been considerably shaped by the story of two of the five helpers, Miep and Jan Gies, even if the support they provided to the onderduikers in the Secret Annex could ultimately not prevent discovery. The question of help, as well as the ultimate betrayal, of the onderduikers are linked to the broader question of the role of the Dutch population during the Holocaust. Within that context the Anne Frank story can and has indeed been used to provide both a stereotypical image of Gentile betrayal as well as an idealized and, arguably, romanticized image of Gentile help. In this paper I will trace the ways in which the image of help and rescue of Dutch Jews was shaped by the story of, especially, Miep Gies and analyse the ways in which her story resonated in the Netherlands as well as abroad. Important moments in this regard were the recognition of Miep Gies and the other helpers as Righteous Among the Nations in 1972, and the global publication of Miep Gies’ memoirs in 1987. I will frame this analysis within the broader historical context of 1) help provided to Jews in hiding in the Netherlands and the question of how representative the ‘helpers of Anne Frank’ were, and 2) the extent to which a focus on a few key individuals obscures the more complex reality of how rescue functioned in the first place. [less ▲]

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See detailOn socially constructed aspects of language (in)competence: Raising critical language awareness in the multilingual workplace
Lovrits, Veronika UL

Scientific Conference (2020, November 19)

In this theoretical contribution, I invite fellow researchers and managers to engage in a reflection on what is perceived as a competent language use at work. The objective is to open a broader discussion ... [more ▼]

In this theoretical contribution, I invite fellow researchers and managers to engage in a reflection on what is perceived as a competent language use at work. The objective is to open a broader discussion on seemingly obvious assumptions that may skew our understanding of everyday language practices. Critically reflected research review will point out to limitations of commonplace perspectives that mirror in managerial research and have implications for practice. Two questions will be discussed to raise critical awareness in the multilingual workplace: what linguistic norm sets the bar for the appropriateness of language use in the workplace, and whose interests does the language norm represent. This way, three problematic topics will be brought to attention: non acknowledged proliferation of linguistic concepts from education to workplace; questionable aptness of referring to standard language norm; and unacknowledged power plays fuelled by competing pragmatic needs of communicative partners. A reflection of power relations linked to norms and needs in the workplace may subsequently support a variety of practical managerial responses – ranging from a symbolic social acceptance of nonstandard language use to a decision to hire a professional linguistic service. [less ▲]

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See detailExperimenter Effects in Children Using the Smileyometer Scale
Lehnert, Florence Kristin UL; Lallemand, Carine UL; Fischbach, Antoine UL et al

Scientific Conference (2020, November 19)

Researchers in the social sciences like human-computer interaction face novel challenges concerning the development of methods and tools for evaluating interactive technology with children. One of these ... [more ▼]

Researchers in the social sciences like human-computer interaction face novel challenges concerning the development of methods and tools for evaluating interactive technology with children. One of these challenges is related to the validity and reliability of user experience measurement tools. Scale designs, like the Smileyometer, have been proven to contain biases such as the tendency for children to rate almost every technology as great. This explorative paper discusses a possible effect of two experimenter styles on the distribution of 6-8 years old pupils' ratings (N= 73) to the Smileyometer. We administered the scale before and after a tablet-based assessment in two schools. Experimenter 1 employed a child-directed speech compared to a monotone speech of Experimenter 2. While brilliant (5 out of 5) was the most frequent answer option in all conditions, the mean scores were higher and associated with a lower variability across both conditions for Experimenter 2. We discuss a possible experimenter effect in the Smileyometer and implications for evaluating children’s user experiences. [less ▲]

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See detailUpdate on NORMAN-SLE / SusDat for NORMAN-CWG-NTS Meeting (17 Nov 2020)
Schymanski, Emma UL

Scientific Conference (2020, November 17)

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See detailMultilingual education in early years in Luxembourg: mind ideologies!
Kirsch, Claudine UL

Scientific Conference (2020, November 14)

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See detailProfessional development to promote innovative language teaching: examples from multilingual Luxembourg
Kirsch, Claudine UL

Scientific Conference (2020, November 13)

While multilingual programmes have been implemented in early childhood education in several countries in Europe, professionals may still be unsure of how to promote multilingualism and deal with language ... [more ▼]

While multilingual programmes have been implemented in early childhood education in several countries in Europe, professionals may still be unsure of how to promote multilingualism and deal with language diversity. There is a need for professional development (PD) which can influence the practitioners’ attitudes, knowledge and skills, and the quality of their teaching (Egert et al., 2018; Peleman et al., 2017). This presentation begins with an outline of several theoretical models of PD and explains why integrated models that are collaborative, inquiry-based, and performance-based are the most effective in contributing to change. I will then present a PD used in Luxembourg to help early childhood practitioners develop and implement multilingual pedagogies. The model, which comprised training sessions, network meetings, and coaching, aimed to deepen the practitioners’ understanding of multilingualism and language learning, familiarize them with translanguaging (García & Reid, 2019) and enable them to implement language and literacy activities in Luxembourgish, French and children’s home languages (Kirsch et al. forthcoming). Finally, I provide insights into the professional learning of two preschool teachers. The PD, the experience of engaging in multilingual activities, and the reflection on teaching and learning, enabled the teachers to develop a positive stance to multilingual education, design productive leaning environments based on social-constructivist theories, and monitor language use to guarantee responsible translanguaging (Kirsch 2020). [less ▲]

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See detailFormation à la pratique d’enseignement en temps de crise sanitaire: Conception, production et diffusion de vidéos pédagogiques à distance
Reuter, Robert UL; Reeff, Alain; Busana, Gilbert UL

Scientific Conference (2020, November 13)

Le Bachelor en Sciences de l’Education (BScE) de l’Université du Luxembourg propose une formation approfondie et exigeante alliant savoir académique et pratique. Ils sont formés pour enseigner dans tous ... [more ▼]

Le Bachelor en Sciences de l’Education (BScE) de l’Université du Luxembourg propose une formation approfondie et exigeante alliant savoir académique et pratique. Ils sont formés pour enseigner dans tous les cycles de l’école fondamentale, dans les classes de la voie de préparation et dans le contexte d’élèves à besoins éducatifs spécifiques au Luxembourg. Comme dans de nombreuses autres formations initiales des enseignants, le temps de terrain (ou stage) représente un moment clé de chaque semestre dans le BScE. Face à la crise sanitaire du COVID-19, ce dispositif de formation à la pratique pédagogique n’a pas pu être conservé. En effet, les écoles étaient fermées, les élèves étaient scolarisés à distance par leur enseignant. Nous avons donc dû rapidement innover et mettre en place des activités d’apprentissage alternatives qui correspondaient au mieux aux objectifs visés par les temps de terrain. Nous avons ainsi demandé à nos étudiants de concevoir et produire, en dyades, des vidéos pédagogiques à destination des écoles du pays. Le but était de permettre à nos étudiants de développer les compétences nécessaires pour réaliser de telles ressources d’apprentissage et de de les mettre à disposition des écoles via Internet. Nous allons décrire, analyser et évaluer le dispositif mis en place, ainsi que les vidéos qui ont été produite. Nous allons également discuter des éventuelles leçons apprises qui conduiront à des adaptations dans notre formation. [less ▲]

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See detailHow do pupils experience Technology-Based Assessments? Implications for methodological approaches to measuring the User Experience based on two case studies in France and Luxembourg
Lehnert, Florence Kristin UL; Lallemand, Carine UL; Fischbach, Antoine UL et al

Scientific Conference (2020, November 12)

Technology-based assessments (TBAs) are widely used in the education field to examine whether the learning goals were achieved. To design fair and child-friendly TBAs that enable pupils to perform at ... [more ▼]

Technology-based assessments (TBAs) are widely used in the education field to examine whether the learning goals were achieved. To design fair and child-friendly TBAs that enable pupils to perform at their best (i.a. independent of individual differences in computer literacy), we must ensure reliable and valid data collection. By reducing Human-Computer Interaction issues, we provide the best possible assessment conditions and user experience (UX) with the TBA and reduce educational inequalities. Good UX is thus a prerequisite for better data validity. Building on a recent case study, we investigated how pupils perform TBAs in real-life settings. We addressed the context-dependent factors resulting from the observations that ultimately influence the UX. The first case study was conducted with pupils age 6 to 7 in three elementary schools in France (n=61) in collaboration with la direction de l’évaluation, de la prospective et de la performance (DEPP). The second case study was done with pupils age 12 to 16 in four secondary schools in Luxembourg (n=104) in collaboration with the Luxembourg Centre for Educational Testing (LUCET). This exploratory study focused on the collection of various qualitative datasets to identify factors that influence the interaction with the TBA. We also discuss the importance of teachers’ moderation style and mere system-related characteristics, such as audio protocols of the assessment data. This study contribution comprises design recommendations and implications for methodological approaches to measuring pupils’ user experience during TBAs. [less ▲]

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See detailThe use of augmented reality, digital and physical modelling in schooling at home in early childhood in Echternach
Haas, Ben; Kreis, Yves UL; Zsolt, Lavicza

Scientific Conference (2020, November 12)

During the confinement of COVID-19, many efforts were made by teachers in elementary school to switch from in-school to schooling at home (Kreis et al., 2020). The use of educational technology in early ... [more ▼]

During the confinement of COVID-19, many efforts were made by teachers in elementary school to switch from in-school to schooling at home (Kreis et al., 2020). The use of educational technology in early childhood (cycle 1), however, is not yet a common practice in elementary schools in Luxemburg. Participation in online video conferences or the use of educational technologies relied in early childhood in significant parts on the disponibility and skills of parents. Younger students were experiencing difficulties in following-up courses requests in schooling at home. From previous research (Haas et al., In Preparation), we designed a conceptual framework on parent assisted remote teaching. Hence, we used these findings to work with 12 early childhood students (ages 4-6), their teachers and parents in schooling at home. Based on the four basic principles of Dienes’s theory of mathematics in physical and digital modelling (Lieban, 2019), we created mathematical modelling tasks with TinkerCad. During two weeks, we collected data through chat responses, web meetings and observations. In this presentation, we will explain insights and how further tasks in schooling at home in early childhood could benefit from this experience. [less ▲]

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See detailGeoGebraTAO: Geometry Learning using a Dynamic Adaptive ICT-Enhanced Environment to Promote String Differentiation of Children's Individual Pathways
Dording, Carole; Max, Charles Joseph UL; Kreis, Yves UL et al

Scientific Conference (2020, November 12)

In our project, we investigate the scientific validity of a specific self-built Adaptive Learning Tool in the field of dynamic geometry with a particular focus on the individual learning pathways of a ... [more ▼]

In our project, we investigate the scientific validity of a specific self-built Adaptive Learning Tool in the field of dynamic geometry with a particular focus on the individual learning pathways of a highly diverse student population. 164 children of Luxembourg elementary schools, aged between 10 and 13 years, acted as test-group and explored elementary geometric concepts in a sequence of learning assignments, created with the dynamic mathematics system GeoGebra integrated into the computer-assisted testing framework TAO. They actively built new knowledge in an autonomous way and at their own pace with only minor support interventions of their teacher. Based on easily exploitable data, collected within a sequence of exploratory learning assignments, the GeoGebraTAO tool analyses the answers provided by the child and performs a diagnostic of the child’s competencies in geometry. With respect to this outcome, the tool manages to identify children struggling with geometry concepts and subsequently proposes a differentiated individual pathway through scaffolding and feedback practices. Short videoclips aim at helping the children to better understand any task in case of need and can be watched voluntarily. Furthermore, a spaced repetition feature is another highly useful component. Pre- and post-test results show that the test-group, working with GeoGebraTAO, and a parallel working control-group, following a traditional paper-and-pencil geometry course, increased their geometry skills and knowledge through the training program; the test-group performed even better in items related to dynamic geometry. In addition, a more precise analysis within clusters, based on similar performances in both pre- and post-tests and the child’s progress within GeoGebraTAO activities, provides evidence of some common ways of working with our dynamic geometry tool, leading to overall improvement at an individualized level. [less ▲]

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See detailStudents’ Personality Relates to Experienced Variability in State Academic Self-Concept
Hausen, Jennifer UL; Möller, Jens; Greiff, Samuel UL et al

Scientific Conference (2020, November 11)

Attaining a positive academic self-concept (ASC) is linked to many desirable educational outcomes. Research on which student attributes relate to the formation of ASC is therefore considered to be central ... [more ▼]

Attaining a positive academic self-concept (ASC) is linked to many desirable educational outcomes. Research on which student attributes relate to the formation of ASC is therefore considered to be central. Past research on the association between personality traits and ASC has taken an interindividual perspective, while the intraindividual perspective has been disregarded. The present research explored the relation between students’ Big Five traits and intraindividual variability in state general-school ASC in everyday school life for the first time using intensive longitudinal data. We drew on N=294 German ninth and tenth graders who completed a three-week e-diary and a previously presented 60-item Big Five questionnaire (BFI-2; Danner et al., 2016; Soto & John, 2017) assessing Open-Mindedness, Conscientiousness, Extraversion, Agreeableness, and Negative Emotionality as well as their respective subfacets (i.e., resulting in 15 subfacets). To assess state ASC, students completed three items after every single lesson across four different subjects (resulting in Mlessons = 21.12). We ran six mixed-effects location scale models: one specified with all five Big Five domains, and five (one for each Big Five domain) with the subfacets as predictors of intraindividual variability in state ASC. We found that Open-Mindedness, Conscientiousness, Extraversion, and Negative Emotionality as well as at least one subfacet of each Big Five trait were significant predictors of levels of state ASC independently of students’ gender and reasoning ability, and the narrower subfacets Organization (Conscientiousness) and Depression (Negative Emotionality) predicted variability in state ASC independently of students’ gender and reasoning ability. These findings thus provide first evidence that students’ ASC undergoes short-term fluctuations from school lesson to school lesson and that this intraindividual variability can be partly explained by students’ personality. Our results thus contribute to a more complete map of the formation of ASC and the role of personality therein. [less ▲]

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Peer Reviewed
See detailTackling educational inequalities using school effectiveness measures
Levy, Jessica UL; Mussack, Dominic UL; Brunner, Martin et al

Scientific Conference (2020, November 11)

Detailed reference viewed: 84 (12 UL)
Peer Reviewed
See detailScanning of questionnaires as a tool to identify difficult questions - lessons learned
Heinz, Andreas UL; van Duin, Claire UL; Catunda, Carolina UL et al

Scientific Conference (2020, November 10)

Background: In 2018, the Luxembourg HBSC team scanned the questionnaires to make the data available faster and to avoid entry errors. Scanning has been shown to be suitable for identifying difficult ... [more ▼]

Background: In 2018, the Luxembourg HBSC team scanned the questionnaires to make the data available faster and to avoid entry errors. Scanning has been shown to be suitable for identifying difficult questions. Objective: The presentation shows which questions were difficult to answer and what the difficulty was. Method: The questionnaires were scanned by student assistants and the data was validated by them if the scanning programme did not detect any errors. If errors occurred (e.g. missing answers or multiple answers), then these questionnaires were checked by HBSC team members. This gave us a systematic overview of which questions were difficult to answer. Results 1. The data from 10000 questionnaires were entered in 6 weeks (half the time needed compared to manual entry in 2014). 2. The MVPA question was frequently the subject of multiple answers. This may indicate that these students use the answer scale as a counting aid. 3. Students who state that they have never smoked in their lives often skip the question about tobacco use in the last month. This behaviour can be explained by Grice's conversational maxims. 4. Behaviours indicating that the answers are not serious (crossed-out questions, crosses outside the boxes, fun answers to open questions) are rare. Conclusions: Scanning is an efficient way to enter many questionnaires in a short time and high quality. Furthermore, it can help to discover difficult questions and to find out what the difficulty is. [less ▲]

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See detailDigitale Kommunikation im Alter – Erste Ergebnisse der CRISIS-Studie
Albert, Isabelle UL; Hoffmann, Martine; Murdock, Elke UL et al

Scientific Conference (2020, November 10)

In Folge der Kontaktbeschränkungen und Maßnahmen der sozialen Distanzierung zur Eindämmung der Corona Pandemie wurde vielfach von einem vermehrten Gebrauch digitaler Medien zur Aufrechterhaltung sozialer ... [more ▼]

In Folge der Kontaktbeschränkungen und Maßnahmen der sozialen Distanzierung zur Eindämmung der Corona Pandemie wurde vielfach von einem vermehrten Gebrauch digitaler Medien zur Aufrechterhaltung sozialer Kontakte berichtet. Die vorliegende Studie liefert erste Hinweise darauf, inwiefern sich das Kommunikationsverhalten älterer Menschen während der COVID-19 Krise verändert hat, wie der Gebrauch verschiedener Kommunikationsmittel mit der Reduktion von Einsamkeit und sozialer Isolation zusammenhängt und ob digitale Medien traditionelle Formen der Kommunikation verdrängen oder ergänzen. Im Juni 2020 wurden im Rahmen des vom FNR Luxemburg geförderten CRISIS-Projekts N = 611 in Privathaushalten lebende Personen im Alter zwischen 60 und 98 Jahren zu ihrem Erleben während der COVID-19 Krise befragt. Die Ergebnisse zeigen, dass das Telefon insgesamt zwar weiterhin das wichtigste Kommunikationsmittel älterer Menschen bleibt, jedoch nehmen digitale Medien insbesondere in der Gruppe der 60-69-jährigen einen wichtigen Stellenwert ein, um mit anderen in Kontakt zu bleiben. Dabei reduzierte ein gestiegener Gebrauch digitaler Medien (wie auch traditioneller Medien) das Gefühl, nicht genug Gesellschaft zu haben. Außerdem scheinen neue Arten der Kommunikation traditionelle Arten in unserer Zielgruppe nicht zu ersetzen, sondern sie ergänzen sich gegenseitig. Die Ergebnisse werden mit Bezug auf Maßnahmen zur Reduktion sozialer Isolation und Einsamkeit im Alter und im Kontext von COVID-19 diskutiert. [less ▲]

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See detailThe health, well-being and life satisfaction of young people in Luxembourg before the COVID-19 pandemic and during deconfinement
Residori, Caroline UL; Schomaker, Léa UL; Samuel, Robin UL

Scientific Conference (2020, November 10)

Background: During 2020, most aspects of young people’s lives have been altered by the COVID-19 pandemic and the measures being implemented to contain it. Early studies on the effects of the COVID-19 ... [more ▼]

Background: During 2020, most aspects of young people’s lives have been altered by the COVID-19 pandemic and the measures being implemented to contain it. Early studies on the effects of the COVID-19 pandemic suggest that confinement (so-called “lockdowns”) affect health, well-being and life satisfaction. However, the current situation in many countries is not confinement but prolonged deconfinement with less strict but still considerable measures and recommendations. Objectives: The possible effects of this deconfinement on the health, well-being and life satisfaction of young people is the focus of this oral presentation, which is based on the YAC-Young Adults and COVID-19 study (see Residori et al., 2020). Methods: The study relies on data collected from a random sample of residents of Luxembourg for the Youth Survey Luxembourg in Mai-July 2019 (age-range: 16-29, n=2.800) and in July 2020 (age-range: 12-29, n=3768, preliminary data). The data was gathered via online survey and using the same items as the HBSC study (self-rated health, life satisfaction (Cantril ladder) and the WHO-5 Well-being Index) (Sozio et al., 2020). Results: The cross-sectional comparison of this representative data, explores the health, wellbeing and life satisfaction of young people in Luxembourg before and during the COVID-19 pandemic. The results are presented for the overall population and detailed by socio-demographic groups. For the 12-15-year-olds, the observed proportion reporting a low life satisfaction (<6) was, for example, 31.3% in 2020. This proportion has increased from 19.9% in 2019 to 25.5 % in 2020 for the 16-20-year-olds, from 23.9% to 35.3 % for the 21-25-year-olds and from 20.2% to 32.8% for the 26-29-year-olds. Conclusion: The presentation will conclude on a reflection of the links between the observed differences and the measures implemented to during deconfinement as well as the scientific and political relevance of the observed differences for Luxembourg and other countries. Literature: Residori, Caroline; Sozio, Maria E.; Schomaker, Lea; Samuel, Robin (2020): YAC – Young People and COVID-19. Preliminary Results of a Representative Survey of Adolescents and Young Adults in Luxembourg. University of Luxembourg: Esch-sur-Alzette Sozio, M., Procopio, A., & Samuel, R. (2020). Youth Survey Luxembourg – Technical Report 2019. Esch-sur-Alzette: University of Luxembourg. [less ▲]

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See detailBeyond School Effects: Private Schooling, Segregation and Standardization of School Systems in Latin America
Ceron, Francisco UL

Scientific Conference (2020, November 07)

Introduction A considerable body of studies have shown that specific institutional arrangements in educational systems help in understanding cross-national differences in educational outcomes (Woessman ... [more ▼]

Introduction A considerable body of studies have shown that specific institutional arrangements in educational systems help in understanding cross-national differences in educational outcomes (Woessman 2003, Brunello and Checchi 2007, Bol and van de Werfhorst 2011, Bol et al 2014, Mijs 2016). The design of educational institutions may face policy trade-offs in the tasks of school systems that are served by them. Deregulation as privatization and school autonomy may enhance efficient sorting of students and then maximize learnings but at the cost of exacerbating social inequalities. A centralized education system may guarantee equality of educational opportunities, but it is not clear if it increases or hinder the overall performance level (Bol and van de Werfhorst 2011, Pedró et al 2015). This study is aimed to fill this gap, first, by departing from the widely supported assumption that the organization of educational systems affect, partly, the educational outcomes of students. Second, I focus on developing countries –Latin American countries- as we know less about the impact of institutions in educational outcomes in the region. Third, I attempt to address the following research question: what is the effect of the level of privatization increase achievement inequalities, given the level of standardization of the school systems in Latin American countries? Data and Methods I analyse data from the Tercer Estudio Regional Comparativo y Explicativo (TERCE), implemented in in year 2013 by UNESCO office in Santiago, Chile. TERCE is the most recent large-scale assessment that exclusively cover students and schools in Latin American countries. Fifteen countries participated: Argentina, Brazil, Chile, Colombia, Costa Rica, Dominican Republic, Ecuador, Guatemala, Honduras, Mexico, Nicaragua, Panama, Paraguay, Peru and Uruguay. Following the comparative research body, I use two-level hierarchical model to account for the multilevel structure of the data, students nested in schools, with random school effects and country fixed effects, to identify variability in the educational institutions of interest, given the small number of countries. The dependent variable is performance in mathematics in 6th grade as it is the subject that is most clearly learned at schools (Coleman 1975, Bol et al 2014), and seems to be more sensitive to socioeconomic background than other subjects. The main predictor is socioeconomic status of student, and I control for several indicators related to learning home environment, and sociodemographic variables. At school level, I control for several organizational characteristics and social composition. Findings The main findings show that country-specific configurations of school systems are associated to difference in mathematics achievement. Differences between schools in performance are partly explained by differences at country level. In this regard, I have chosen two important dimensions of school systems, for the Latin American region: the level of standardization and privatization. These results confirm some recent findings that achievement inequality is larger in school systems with a great level of differentiation between schools, in which the stratification triggered by the private sector is one important indicator (Chmielewski and Reardon, 2016). In case of the level of standardization results show that is associated to a lesser degree of achievement inequality. However, the main finding points to persistent inequalities as much as private sector in school systems is bigger. Further, the models predict that these inequalities are not decreasing as the standardization level increases. In this respect, I also find support for a diminishing effect of policies that points to equalization of opportunities (Woessman 2003, Bol and van de Werfhorst 2011). The results suggest higher inequalities as the stratification induced by private school sector increases. These effects are still significant after adding school level controls, which suggest that over and above school processes, uneven between school sorting induces by private sector. [less ▲]

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See detailIWalk in Luxembourg: Jewish public history in forgotten places
Bronec, Jakub UL

Scientific Conference (2020, November 06)

The contribution will introduce the process of designing two IWalk tours with bachelor students in Luxembourg. The presentation will contain the digital source criticism and new perspectives of digital ... [more ▼]

The contribution will introduce the process of designing two IWalk tours with bachelor students in Luxembourg. The presentation will contain the digital source criticism and new perspectives of digital hermeneutics related to themes of individual stops. The students were divided into two working groups, with each group assigned to a different area. Group A was in charge of designing a virtual tour in Luxembourg City and group B created one for the town of Esch-sur-Alzette. The participants took pictures of current buildings and locations associated with Jewish war history and compared them with original historical photos taken before and during the war. The students were encouraged to reflect on how the appearance and function of certain buildings had changed over time. Besides critical analysis of all pros and cons, I will introduce MAXQDA, a tool for qualitative data analysis to be an invaluable assistant for easier pre-selection of interviews. From a methodological perspective, we were able to judge the relevance of interviews for our work. Students also learned to link different text passages to each other as well as to other documents, educational websites, images or geographical locations. When several students are working with one data set, it is important to create a clear system of memos, codes and intercoder agreements. For a comparative analysis, students used a unified thematic coding tree they had created themselves. The use of a common code book tree enables them to find thematic intersections in their work. The contribution will also demonstrate the purpose of pre-question and post-questions, which make users consider the content of each IWalk stop. [less ▲]

Detailed reference viewed: 36 (7 UL)
See detailCommunication, public engagement and public history
Cauvin, Thomas UL

Scientific Conference (2020, November 06)

Detailed reference viewed: 12 (0 UL)
See detailRound table: Museum of Self-isolation
Cauvin, Thomas UL

Scientific Conference (2020, November 06)

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See detailCovid-19 in Portuguese educational scenario: actions, responses and reflections
de Albuquerque Trigo, Maiza UL

Scientific Conference (2020, November 06)

On March 13th, the Portuguese government declared that children were going home, and classes would resume after Easter in an online/distance mode. Children were sent home and the system panicked. As a ... [more ▼]

On March 13th, the Portuguese government declared that children were going home, and classes would resume after Easter in an online/distance mode. Children were sent home and the system panicked. As a majority of teachers are over 45 years old, trainings on online platforms were made available, as well as the platforms to be used. In the meantime, the government announced a plan to broadcast via television general lessons starting from April 20th (two 40-minute lessons per day per school year grouping, for primary and elementary school classes only). Secondary classes were mainly online, but 11th and 12th graders went back to school for a few weeks to prepare themselves to the national exams. As the school year came to an end, new guidelines are being outlined and, at this time, each school has to develop their own return and contingency plans (accordingly to the Health Authorities guidelines). This presentation will discuss the responses in Portugal with a reflective focus on education actions and effects. [less ▲]

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See detailAnalysing transnational Events through Web archives
Schafer, Valerie UL

Scientific Conference (2020, November 04)

As a co-PI of the WARCnet project, programme chair of this second WARCnet meeting and head of WG2 dedicated to "Analysing transnational Events", Valérie Schafer will give an overview of the challenges ... [more ▼]

As a co-PI of the WARCnet project, programme chair of this second WARCnet meeting and head of WG2 dedicated to "Analysing transnational Events", Valérie Schafer will give an overview of the challenges, issues, achievements, results, case studies, next steps of WG2 since the launch of the WARCnet project. [less ▲]

Detailed reference viewed: 74 (1 UL)
See detailSTREAMS: A supporting tool for shared mobility services
Giorgione, Giulio UL; Viti, Francesco UL

Scientific Conference (2020, November)

Detailed reference viewed: 94 (5 UL)
See detaileCoBus: Smart and sustainable public transport in Luxembourg
Viti, Francesco UL

Scientific Conference (2020, November)

Detailed reference viewed: 82 (4 UL)
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See detailHPC Multi-physics Biomass Furnace simulations as a Service
Besseron, Xavier UL; Rusche, Henrik; Peters, Bernhard UL et al

Scientific Conference (2020, November)

Detailed reference viewed: 96 (7 UL)
See detailInequalities in teacher reports on students’ inclusion at school
Zurbriggen, Carmen UL; Nusser, Lena; Schmitt, Monja

Scientific Conference (2020, November)

Detailed reference viewed: 29 (4 UL)
Peer Reviewed
See detailIs there a bilingual advantage in mathematics?
Martini, Sophie Frédérique UL; Keller, Ulrich UL; Ugen, Sonja UL

Scientific Conference (2020, November)

Detailed reference viewed: 38 (5 UL)
See detailDeliberative constitution-making in Luxembourg
Burks, Deven UL; Kies, Raphaël UL

Scientific Conference (2020, October 22)

Luxembourg is a small constitutional monarchy and parliamentary democracy. Since its 1868 ratification, the Constitution of Luxembourg has been amended 35 times, so the document resembles more and more a ... [more ▼]

Luxembourg is a small constitutional monarchy and parliamentary democracy. Since its 1868 ratification, the Constitution of Luxembourg has been amended 35 times, so the document resembles more and more a patchwork quilt of basic institutions. Yet the past twenty years have seen a consensus amongst Luxembourg’s constitutional players on the need for modernization, motivated by the desire for a more coherent constitution. Article 114 vests the Chamber of Deputies with the power to initiate and to approve constitutional amendments in a two-step process. This has several consequences for deliberation. First, it is largely restricted to political elites because formal amendment powers rest solely with the Chamber. Second, there is little to no empowered maxi-public deliberation unless the Government supports a citizen consultation. Following the 2013 parliamentary elections, the new Government planned a two-part referendum on constitutional reform in summer 2015 and in winter 2015. The first referendum was intended to seek popular input on four proposals which voters rejected by large margins, and the second referendum was later scrapped. Nevertheless, this reform process has seen some participatory and deliberative experiments. For the purposes of the present COST Action, three events are of interest. First, charged by the Chamber of Deputies, the UL’s Parliamentary Studies Research Chair at organized in May 2014 CIVILEX, a citizens’ forum modelled along the lines of a 21st century Town Meeting to discuss each of the four referendum questions. Researchers found that group discussion sometimes produced significant shifts in opinion between the pre- and post-deliberation questionnaires. Furthermore, once experts had cleared up certain misunderstandings, citizens ably discussed the referendum proposals. Despite these largely positive experiences, this deliberative experiment remained an isolated experiment and was not renewed during the campaign leading up to the June 2015 referendum. Second, given the first referendum results, the Chamber made a renewed effort in 2015 to involve citizens in the constitutional reform process, so it collected proposals via a new web portal - www.ärvirschléi.lu (Your Recommendation) – and subsequently held a public hearing with those who had initiated proposals. The process yielded some participatory and deliberative outcomes, including the elaboration of several constitutional amendments. For instance, Chamber members reached consensus on strengthening the rights of children and of animals compared to their original text. Nevertheless, the webportal was not developed as an online deliberative forum and saw limited, self-selected participation. Consequently, though this was the only concrete involvement of citizens in the constitutional reform, it was the least deliberative of the three exercises. Third, since the Government had still planned to call a second referendum to vote on the constitutional reform as a whole, the Chamber again tasked the Chair with gauging public opinion. So, in July 2016, the Chaire organized CONSTITULUX, a new citizens’ forum to discuss the entire draft constitution. Citizens i.) raised pertinent questions, ii.) identified short- and long-term concerns and iii.) suggested improvements to the draft articles. One striking output was that participants were more supportive of the proposed constitutional reform. Like CIVILEX, it generated little concrete action from the Government. Moreover, the incidental and experimental nature of these events again meant that there was little maxi-public engagement. Following the draft constitution’s abandonment in November 2019, it remains to be seen what the future holds for deliberative democracy and constitution-making in Luxembourg. [less ▲]

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See detailTESTING ENVIRONMENTS FOR LUNAR SURFACE PERCEPTION SYSTEMS; COMBINING INDOOR FACILITIES, VIRTUAL ENVIRONMENTS AND ANALOGUE FIELD TESTS.
Ludivig, Philippe UL; Olivares Mendez, Miguel Angel UL; Calzada Diaz, Abigail et al

Scientific Conference (2020, October 21)

This paper describes the different approaches which can be used to test vision systems for operations on robotic lunar surface missions. We investigate validating systems in virtual environments, lab ... [more ▼]

This paper describes the different approaches which can be used to test vision systems for operations on robotic lunar surface missions. We investigate validating systems in virtual environments, lab environments and analogue outdoor environments and demonstrate that a combination of all three approach-es is needed to sufficiently test systems for the lunar surface. [less ▲]

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See detailTraffic Simulator for Multibeam Satellite Communication Systems
Al-Hraishawi, Hayder UL; Lagunas, Eva UL; Chatzinotas, Symeon UL

Scientific Conference (2020, October 20)

Assume that a multibeam satellite communication system is designed from scratch to serve a particular area with maximal resource utilization and to satisfactorily accommodate the expected traffic demand ... [more ▼]

Assume that a multibeam satellite communication system is designed from scratch to serve a particular area with maximal resource utilization and to satisfactorily accommodate the expected traffic demand. The main design challenge here is setting optimal system parameters such as number of serving beams, beam directions and sizes, and transmit power. This paper aims at developing a tool, multibeam satellite traffic simulator, that helps addressing these fundamental challenges, and more importantly, provides an understanding to the spatial-temporal traffic pattern of satellite networks in large-scale environments. Specifically, traffic demand distribution is investigated by processing credible datasets included three major input categories of information: (i) population distribution for broadband Fixed Satellite Services (FSS), (ii) aeronautical satellite communications, and (iii) vessel distribution for maritime services. This traffic simulator combines this three-dimensional information in addition to time, locations of terminals, and traffic demand. Moreover, realistic satellite beam patterns have been considered in this work, and thus, an algorithm has been proposed to delimit the coverage boundaries of each satellite beam, and then compute the heterogeneous traffic demand at the footprint of each beam. Furthermore, another algorithm has been developed to capture the inherent attributes of satellite channels and the effects of multibeam interference. Data-driven modeling for satellite traffic is crucial nowadays to design innovative communication systems, e.g. precoding and beam hopping, and to devise efficient resource management algorithms. [less ▲]

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See detailDigital Detective Work: Connecting Cheminformatics, Mass Spectrometry and our Environment (analytica Conference)
Schymanski, Emma UL; Bolton, Evan

Scientific Conference (2020, October 20)

Detailed reference viewed: 41 (1 UL)
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See detailWELDING COPPER TO ALUMINIUM WITH GREEN LASER WAVELENGTH OF 515 NM
Mathivanan, Karthik UL; Plapper, Peter UL

Scientific Conference (2020, October 19)

Joining copper and aluminum sheets is difficult because of brittle intermetallic phases (IMP) formed in the joint, which results in reduced performance. The traditional approach to overcome this issue is ... [more ▼]

Joining copper and aluminum sheets is difficult because of brittle intermetallic phases (IMP) formed in the joint, which results in reduced performance. The traditional approach to overcome this issue is to irradiate the laser beam from Aluminum (Al) to control the weld depth and mixing of Cu in Al. The laser welding approach from the copper side (Cu on top) to Al is very sparse in the literature. In this paper, the welding approach from copper (top sheet) to aluminum is studied with green laser (515 nm) due to improved absorption at this wavelength. The objective of irradiating the laser beam from the copper side (Cu on top) is to exploit the higher solubility of Al in Cu (about 18%), which is significantly higher than Cu in Al. Therefore more Cu and Al can be melted and mixed in the joint for copper sheet placed on the top. From the tensile shear test, a strong joint is obtained with a fracture on the heat-affected zone (HAZ) of Al. Detailed microstructure and composition of Al and Cu in the joint is performed by Energy-dispersive X-ray spectroscopy (EDS) to investigate the composition in the joint. The EDS analysis indicates that a large amount of beneficial Cu solid solution and Al-rich phases is formed in the joint. The detrimental phases are intermixed in between the ductile phase composition i.e Al-rich and Cu solid solution. Therefore the effect of detrimental intermetallic phases is mitigated by intermixing with large ductile phases. With this paper, the fusion welding approach for joining Cu and Al system with a significant level of Cu and Al melting is shown. [less ▲]

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See detailLowering the obstacles for SMEs to adopt multi-physics biomass furnace simulations by providing a cloud based solution
Rusche, Henrik; Peters, Bernhard UL; Besseron, Xavier UL et al

Scientific Conference (2020, October 14)

Detailed reference viewed: 84 (2 UL)
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See detailThe Future of Money in the Digital Age
Brand, Claus; Danescu, Elena UL

Scientific Conference (2020, October 09)

Research Seminar “The Future of Money in the Digital Age" (Blockchain and Cryptocurrencies. Digital Currencies vs Sovereign Currencies: Potential Implications for the Economic and Monetary Union.)

Detailed reference viewed: 112 (5 UL)
See detailLa Public History à Esch
Cauvin, Thomas UL

Scientific Conference (2020, October 09)

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See detailPresentación del paquete eph
Rosati, German; Kozlowski, Diego UL; Shokida, Natsumi Solange UL et al

Scientific Conference (2020, October 09)

Working with data produced by public sources often encounters several problems: one of the most common is the lack of continuity in the publication of databases. In this regard, the Permanent Household ... [more ▼]

Working with data produced by public sources often encounters several problems: one of the most common is the lack of continuity in the publication of databases. In this regard, the Permanent Household Survey -EPH- of the National Institute of Statistics and Censuses (INDEC) in Argentina is an exception. In fact, this survey has published user databases with information since 1974. However, this has been done in a "non-replicable" way: from changes in the formats of its publication (dbase, .txt, .xls, .sav, etc.) to renaming some variables and recoding their categories, which makes them impractical for continuous use and processing. The lack of an API for the dissemination of information produced by INDEC generates a limit to the information processing capabilities, reducing the users to i) thematic experts with knowledge of how to access sources and ii) media that access information already processed in the form of press releases. This limits the potential value of the enormous work done by the institute, by discouraging its use by users with limited knowledge of the sources, but with data processing capabilities, such as the R community. In turn, certain key indicators presented by the EPH have methodological annexes, but no public implementations that allow the public to make use of the methodology outside the reports prepared by the institute. In this context, the eph package aims to facilitate the work of those users of the Permanent Household Survey - INDEC who wish to process data from it using the programming language R. The library has the following functionalities: i) a unified syntax for downloading, tagging and building datasets with comparable cross-sectional information ii) Implementation of indicator calculation (poverty) using the official methodology Some of its functions are: get_microdata(): Downloads the microdata bases, organize_panels(): Allows to build a panel data pool of the continuous EPH surveys, organize_cno(): Classifies occupations according to the CNO 2001 organize_caes(): Classifies economic activities according to CAES Mercosur 1.0 and CAES Mercosur organize_labels(): Label the bases following the last design map_agglomerates(): Indicator map by agglomerate The package also has other datasets that can be useful for working with the EPH: some dictionaries that contain the coding of geographic variables (such as regions or clusters) or the geographic position (centroids) of the clusters where the survey is conducted. [less ▲]

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See detailCollaboration with parents and multiliteracy in early childhood education
Kirsch, Claudine UL; Neumann, Sascha; Aleksic, Gabrijela UL et al

Scientific Conference (2020, October 09)

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See detailActive Popularity Learning with Cache Hit Ratio Guarantees using a Matrix Completion Committee
Bommaraveni, Srikanth UL; Vu, Thang Xuan UL; Chatzinotas, Symeon UL et al

Scientific Conference (2020, October 08)

Edge caching is a promising technology to facethe stringent latency requirements and back-haul trafficoverloading in 5G wireless networks. However, acquiringthe contents and modeling the optimal cache ... [more ▼]

Edge caching is a promising technology to facethe stringent latency requirements and back-haul trafficoverloading in 5G wireless networks. However, acquiringthe contents and modeling the optimal cache strategy is achallenging task. In this work, we use an active learningapproach to learn the content popularities since it allowsthe system to leverage the trade-off between explorationand exploitation. Exploration refers to caching new fileswhereas exploitation use known files to cache, to achievea good cache hit ratio. In this paper, we mainly focus tolearn popularities as fast as possible while guaranteeing anoperational cache hit ratio constraint. The effectiveness ofproposed learning and caching policies are demonstratedvia simulation results as a function of variance, cache hitratio and used storage. [less ▲]

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See detailEpistemic communities in building EMU: Pierre Werner, Robert Triffin and Jean Monnet in European monetary cooperation.
Danescu, Elena UL

Scientific Conference (2020, October 07)

On 8 October 1970 in Luxembourg, Pierre Werner officially presented the plan by stages for an economic and monetary union (EMU) in the European Community. This document was the result of seven months of ... [more ▼]

On 8 October 1970 in Luxembourg, Pierre Werner officially presented the plan by stages for an economic and monetary union (EMU) in the European Community. This document was the result of seven months of discussions by a group of experts from the six Member States, chaired by the Luxembourg Prime Minister and Finance Minister. The Werner Report set out the broad lines, principles and stages of an EMU based on the principle of irreversibility and an approach rooted in perfect symmetry between the economic and monetary aspects, with political union as the ultimate objective. It provided for the creation of a “centre of decision for economic policy” that would be “politically responsible to a European Parliament” elected by universal suffrage, and a “Community system for the central banks”. It introduced the notion of strong macroeconomic governance, requiring the coordination of budgetary and monetary policies, and full financial integration. It also envisaged the involvement of the “social partners” (employers and unions) in defining economic and monetary policy, since the social dimension was seen as an intrinsic part of EMU. Although it was ultimately not implemented, the Werner Report led to the creation of the European Monetary Cooperation Fund (EMCF) in 1973 in Luxembourg – the embryo of the future European Central Bank. This institutional architecture was inspired by the reflections on a European reserve fund initiated in 1948 by Robert Triffin and subsequently developed through his discussions with Jean Monnet and Pierre Werner. The three were committed to the European cause and shared the same vision of EMU, rooted in “perfect parallelism”, democratic strength and a social dimension. Robert Triffin and Jean Monnet, together with other members of Monnet’s Action Committee for a United States of Europe, intended to work on the strategy devised by Pierre Werner to build a political consensus around the report. [less ▲]

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See detailMultilingual literacy practices in crèches in Luxembourg: preliminary findings from questionnaires
Kirsch, Claudine UL

Scientific Conference (2020, October 06)

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See detailResource Allocation for UAV Relay-Assisted IoT Communication Networks
Tran Dinh, Hieu UL; Nguyen, van Dinh UL; Gautam, Sumit UL et al

Scientific Conference (2020, October 06)

This work studies unmanned aerial vehicle (UAV) relay-assisted Internet of Things (IoT) communication networks in which a UAV is deployed as an aerial base station (BS) to collect time-constrained data ... [more ▼]

This work studies unmanned aerial vehicle (UAV) relay-assisted Internet of Things (IoT) communication networks in which a UAV is deployed as an aerial base station (BS) to collect time-constrained data from IoT devices and transfer information to a ground gateway (GW). In this context, we jointly optimize the allocated bandwidth, transmission power, as well as the UAV trajectory to maximize the total system throughput while satisfying the user’s latency requirement and the UAV’s limited storage capacity. The formulated problem is strongly nonconvex which is very challenging to solve optimally. Towards an appealing solution, we first introduce new variables to convert the original problem into a computationally tractable form, and then develop an iterative algorithm for its solution by leveraging the inner approximation method. Numerical results are given to show [less ▲]

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See detailValorization of talents' work: A qualitative study on talent management
Usanova, Ksenia UL

Scientific Conference (2020, October 05)

Detailed reference viewed: 34 (2 UL)
See detailB/Ordering-Prozesse als Bordertexturen
Wille, Christian UL

Scientific Conference (2020, October)

Angesichts jüngster Re-B/Ordering-Tendenzen (Grenzkontrollen an EU-Binnengrenzen, Euroskeptizismus, Nationalismen, Populismus, komplexe Migrationsdynamiken) ist die Grenzforschung zunehmend stärker ... [more ▼]

Angesichts jüngster Re-B/Ordering-Tendenzen (Grenzkontrollen an EU-Binnengrenzen, Euroskeptizismus, Nationalismen, Populismus, komplexe Migrationsdynamiken) ist die Grenzforschung zunehmend stärker herausgefordert, was sich auch oder vor allem in einer bewegten theoretisch-konzeptionellen Debatte widerspiegelt. Sie hat in den letzten Jahrzehnten eine kaum überschaubare Reihe an Ansätzen und Begriffen hervorgebracht, die inspiriert vom practice turn die Grenze als soziale Praxis in den Mittelpunkt stellen. Der in das Panel einführende Beitrag zeichnet diese Entwicklung nach und stellt darauf aufbauend den Ansatz der Bordertexturen näher vor. Dafür werden im ersten Teil drei analytische Trends der aktuellen Grenzforschung idealtypisch unterschieden. Sie stehen dabei für spezifische Schwerpunktsetzungen in der Beschreibung und Analyse von Grenzen: (1) Zunächst wird die Hinwendung zu Grenzen als soziale Produktionen vorgestellt, die sich an Prozessen ihrer (De-)Stabilisierung festmachen lässt und in (diskursiven) Praktiken manifest wird. Daran anschließend wird (2) eine geweitete Auffassung solcher Prozesse herausgearbeitet, die für die Vielheit der daran beteiligten Aspekte sensibilisiert und einen multiplen Zugriff auf Grenz(de)stabilisierungen einfordert. Schließlich wird (3) die Tendenz zu komplexeren Betrachtungen ausgeführt, die Grenz(de)stabilisierungen als Effekte von dynamischen Formationen verstehen. Im zweiten Teil des Vortrags wird der kulturwissenschaftlich orientierte Ansatz der Bordertexturen vorgestellt, der die für B/Ordering-Prozesse wirksamen Formationen von Wissen, Diskursen, Tätigkeiten, Objekten und Körpern als Texturen fasst. Der Texturbegriff soll die komplexe Verflochtenheit der genannten Konstituenten betonen, eine ‚dichte Beschreibung‘ von Grenz(de)stabilisierungen befördern und in der Grenzforschung für die symbolisch-ästhetische Dimension sensibilisieren. Bordertexturen stehen dabei für komplexe Formationen der Grenz(de)stabilisierung, die rhizomartig strukturiert sind, auf ein multiskalares und azentrisches Geflecht verweisen und ästhetische Verarbeitungen ebenso einschließen wie alltagskulturelle Praktiken. Die Einführung des Ansatzes soll zu den Panelvorträgen hinführen, welche die theoretisch-konzeptionellen Überlegungen an unterschiedliche Gegenstandsbereiche anlegen und diskutieren. [less ▲]

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See detailZwischen Gehege und Idylle: Durs Grünbeins "Heimat"
Kohns, Oliver UL

Scientific Conference (2020, October)

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See detailPVDeConv: Point-Voxel Deconvolution for Autoencoding CAD Construction in 3D
Cherenkova, Kseniya UL; Aouada, Djamila UL; Gusev, Gleb

Scientific Conference (2020, October)

We propose a Point-Voxel DeConvolution (PVDeConv) mod- ule for 3D data autoencoder. To demonstrate its efficiency we learn to synthesize high-resolution point clouds of 10k points that densely describe ... [more ▼]

We propose a Point-Voxel DeConvolution (PVDeConv) mod- ule for 3D data autoencoder. To demonstrate its efficiency we learn to synthesize high-resolution point clouds of 10k points that densely describe the underlying geometry of Computer Aided Design (CAD) models. Scanning artifacts, such as pro- trusions, missing parts, smoothed edges and holes, inevitably appear in real 3D scans of fabricated CAD objects. Learning the original CAD model construction from a 3D scan requires a ground truth to be available together with the corresponding 3D scan of an object. To solve the gap, we introduce a new dedicated dataset, the CC3D, containing 50k+ pairs of CAD models and their corresponding 3D meshes. This dataset is used to learn a convolutional autoencoder for point clouds sampled from the pairs of 3D scans - CAD models. The chal- lenges of this new dataset are demonstrated in comparison with other generative point cloud sampling models trained on ShapeNet. The CC3D autoencoder is efficient with respect to memory consumption and training time as compared to state- of-the-art models for 3D data generation. [less ▲]

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See detailUsing word embeddings to explore the Aboriginality discourse in a corpus of Australian Aboriginal autobiographies
Kamlovskaya, Ekaterina UL; Schommer, Christoph UL

Scientific Conference (2020, September 29)

This submission presents intermediate results of the PhD project analysing discourses in a corpus of Australian Aboriginal autobiographies with word embedding modelling.

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See detailIndirizzi di saluto
Cauvin, Thomas UL

Scientific Conference (2020, September 27)

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See detailMeasuring the Environmental Exposome (ISES2020)
Schymanski, Emma UL

Scientific Conference (2020, September 21)

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See detailIdentität im Spannungsfeld der Migrationsbewegung
Murdock, Elke UL

Scientific Conference (2020, September 21)

Die Rahmenbedingungen bei der Migration von deutschen Staatsangehöriger können – v. a. im Vergleich zu den meisten Migrantengruppen, die in der Forschung betrachtet werden – als privilegiert und günstig ... [more ▼]

Die Rahmenbedingungen bei der Migration von deutschen Staatsangehöriger können – v. a. im Vergleich zu den meisten Migrantengruppen, die in der Forschung betrachtet werden – als privilegiert und günstig beschrieben werden. Die deutsche Staatsangehörigkeit garantiert zum Beispiel einen leichten Zugang zu den meisten Ländern der Welt (Visa-Germany 2020). Zudem ist die Entscheidung zur Ausreise meist freiwillig, auf Basis ganz unterschiedlicher Beweggründe getroffen und die Möglichkeit zur Rückreise zumeist auch gegeben. Selbst wenn „Deutsch sein“ für die Auswanderer kein identitätsbestimmendes Merkmal war, werden sie im Ausland über die Kategorie „Deutsch“ wahrgenommen. Auf der einen Seite wird also über diese kategoriale Zuschreibung von außen eine Auseinandersetzung mit eignen Herkunftsland angeregt, auf der anderen Seite werden auch erst in der Kulturkontakterfahrung, wenn Selbstverständlichkeiten im alltäglichen Leben nicht mehr greifen, eigene Vorstellungen, Erwartungen und Werte bewusst und können reflektiert werden. Es gibt interindividuelle Unterschiede in Bezug auf die Bereitschaft sich mit solchen Unterschieden auseinanderzusetzen, einen Perspektivenwechsel einzunehmen und den eigenen Standpunkt zu hinterfragen (Tadmor und Tetlock, 2006). Die Bewertung dieser Erfahrung als bereichernd oder belastend ist ebenfalls sehr unterschiedlich. Die Frage der Konsequenzen der Mobilitätserfahrung für die eigene Identität und das Gefühl der Zugehörigkeit zu Deutschland bzw. dem Gastland lässt sich mit Hilfe der „German Emigration and Remigration Panel Study“ (GERPS) empirisch untersuchen. Die Determinanten dieses Zugehörigkeitsgefühls sowohl zum Gastland als auch zum Heimatland sollen im Verlaufe der Mobilitätserfahrung näher beleuchtet werden. Erste Resultate der Auswertung der ersten Welle zeigen, dass etwa die Hälfte der Auswanderer sich mit ihrem Auswanderungsland verbunden fühlen, wobei die Bleibeperspektive ein wichtiger Prädiktor ist. Ebenso wie der Migrationsprozess selbst, wird auch die Identitätsbildung als lebenslanger, dynamischer, unabgeschlossener und mehrdimensionaler Prozess verstanden. Aufbauend auf dieser Annahme und dem Akkulturationsrahmenmodell von Arends-Tóth und van de Vijver (2006) wird ein theoretisches Modell vorgestellt, mit Hilfe dessen Identität im Spannungsfeld der Migration untersucht werden kann. [less ▲]

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See detailPractical Use Cases for Ethernet Redundancy
Pannell, Don; Navet, Nicolas UL

Scientific Conference (2020, September 17)

Autonomous driving requires safety considerations and the need of “fail operational” requires redundancy. In the networking portion of a car, this may mean separate networks, possibly of different ... [more ▼]

Autonomous driving requires safety considerations and the need of “fail operational” requires redundancy. In the networking portion of a car, this may mean separate networks, possibly of different technologies. Or it could mean a network topology and technology that supports scalable redundancy, like Ethernet TSN. This presentation focuses on IEEE 802.1CB-2017, which is the TSN standard that supports data redundancy through the network. Various network topologies are examined. The relative costs of adding TSN redundancy for these topologies (including some, or all of, the end-stations/ECUs & bridges) are examined for various bandwidth utilizations, along with the expected packet loss. Each topology and bandwidth will be modeled under various bit-rate error values with the results discussed. This presentation aims at providing a clear understanding of the TSN standards that support redundancy, and an understanding of the cost/benefit tradeoffs so proper engineering decisions can be made and proper expectations set. [less ▲]

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See detailSchadstoffen auf der Spur mit Umweltcheminformatik
Schymanski, Emma UL

Scientific Conference (2020, September 17)

Detailed reference viewed: 57 (0 UL)
See detailUrban repair networks: the City of Luxembourg and Esch-Sur-Alzette
Hoppenheit, Thomas UL

Scientific Conference (2020, September 17)

Detailed reference viewed: 43 (1 UL)
See detailFIXING THE TELEPHONE Communicating through the wired dispositives of a large technological system
Mossop, Rebecca UL

Scientific Conference (2020, September 17)

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See detailTowards Computer-Aided, Iterative TSN-and Ethernet-based E/E Architecture Design
Creighton, Oliver; Navet, Nicolas UL; Keller, Patrick UL et al

Scientific Conference (2020, September 16)

In this presentation we would like to propose a novel approach towards studying and simulating candidate designs of next generation Ethernet architectures at established OEMs that intend to employ 100BASE ... [more ▼]

In this presentation we would like to propose a novel approach towards studying and simulating candidate designs of next generation Ethernet architectures at established OEMs that intend to employ 100BASE-T1, 1000BASE-T1 and, for increased flexibility and lower cost, 10BASE-T1S. Typical design goals of next generation architectures are future extensibility and cost optimization of the lowest-end. We propose to introduce guidance to an otherwise standard Monte-Carlo simulation by providing certain fixed points (e.g., mandated connections of ECUs to certain bridges, complete re-use of ECUs) and “hot spots” in the topology (e.g., ECUs with the highest variability pressure) that are known in advance from BMW’s experience with their vehicles in the field. Several important practical considerations must be integrated in the generation of candidate architectures: - Topological constraints: ECU proximity to sensors, daisy chain connections between ECUs to minimize cable length, number of switch ports in a certain ECU, etc. - Security and reliability requirements: segregation between mixed-criticality streams, proxy ECUs, and redundant paths. Our position statement explores the ability of algorithmic tools to synthesize Ethernet-based architectures based on a minimal fixed core TSN topology, design goals, design constraints, assumptions about next generation applications and data from past projects (capturing part of the OEM domain knowledge). [less ▲]

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See detailScaling of urban heat island & NO2 with urban population: a meta-analysis
Wei, Yufei UL; Caruso, Geoffrey UL; Lemoy, Rémi

Scientific Conference (2020, September 16)

Detailed reference viewed: 587 (29 UL)
See detailGoverning Health in the European Semester: Towards the Economy of Wellbeing?
Muñoz, Susana UL

Scientific Conference (2020, September 11)

Health is a key component of the Economy of Wellbeing, the new horizontal approach to political decision-making and governance adopted by the Council of the European Union on 24 October 2019. Building on ... [more ▼]

Health is a key component of the Economy of Wellbeing, the new horizontal approach to political decision-making and governance adopted by the Council of the European Union on 24 October 2019. Building on the principles of the European Pillar of Social Rights and on the Health in All Policies and One Health approaches, it seeks to strengthen the role of employment, social, health and education policies within the European Semester. Nevertheless, “wellbeing” acquires a new resonance for the post COVID-19 “Economy of Recovery”. Against this backdrop, this paper aims to provide a critical review of the effectiveness of the European Semester as a governance tool for the “wellbeing” policies from the perspective of EU law and policy- making and enforcement. It also examines future prospects in the light of the multiple impacts of the current health and socioeconomic crises. [less ▲]

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See detailDeliberative constitutionalism, popular sovereignty and alternative forms of government
Burks, Deven UL

Scientific Conference (2020, September 09)

Although deliberative democratic theory has traditionally positioned itself as a complement or corrective to representative bodies making ordinary law, it has recently expanded to the field of ... [more ▼]

Although deliberative democratic theory has traditionally positioned itself as a complement or corrective to representative bodies making ordinary law, it has recently expanded to the field of constitution-making and bodies formulating higher law. Yet this ‘deliberative constitutionalism’ has yet to confront two difficulties. First, ‘constitution- making’ is ambiguous between the process of drafting a constitution (‘making’), and the drafted system of institutions for collective action (‘constitution’). Thus far, scholarly attention has been squarely on the former, meaning that there is at best only a sketchy picture of a properly deliberative constitutional regime as an alternative to existing representative democratic constitutional regimes (see Parkinson 2016). Second, and as a direct consequence thereof, deliberative constitutionalists have not explored which alternative forms of government might be warranted by different deliberative constitutional regimes. In this paper, I tackle both these difficulties by modelling four different deliberative constitutional regimes – ‘deliberative containment’, ‘deliberative co-articulation’, ‘deliberative potential’, ‘deliberative ‘irritant’ (inspired by Loughlin and Walker 2007) – and by illustrating their characteristic institutional mechanisms, including such alternative institutions as one-shot or continuous sortition bodies, deliberative polls and maxi-public combined with varieties of plural voting, amongst others. In this way, I propose a clearer systemic vision of not just what alternative forms of government may be found under different deliberative constitutional regimes but which such regimes, with their expressed basic values, are liable to justify those alternative institutions. [less ▲]

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See detailDigitizing of Research and Teaching
Plapper, Peter UL

Scientific Conference (2020, September 05)

The current Covid-19 crisis impacts all manufacturing areas and new processes are sought. This presentation provides the audience with three examples related to assembly work instructions, logistics data ... [more ▼]

The current Covid-19 crisis impacts all manufacturing areas and new processes are sought. This presentation provides the audience with three examples related to assembly work instructions, logistics data handling and manufacturing education, for which innovative ways to obtain access to context sensitive data based on digital tools are investigated. Augmented Reality (AR) and Virtual Reality (VR) facilitate access to relevant manufacturing information. In order to provide logistic warehouse workers with immediate access to shipping documents, to avoid paper print-outs, and to eliminate error-prone typing of information, critical information should be handled digitally and hands-free. To support logistic workers to efficiently document, register and trace receipt, storage or delivery of goods, the presented solution is built on hands-free digital tools with AR technology in commercially available smart glasses. Similarly, workers who execute complex assembly operations frequently require either assistance or support for the next assembly step. Depending on the context, relevant assembly process information is automatically displayed together with the environment in the AR smart glass. Thus, the operator is supported by the presented hands-free-tool to complete the next challenging tasks. Currently, teaching is being transferred from physical class-room teaching to remote or hybrid education. For this purpose, Virtual Reality (VR) provides a very welcome opportunity to complement in-presence teaching with exposure to examples of real manufacturing operations captured in videos of industrial case studies. Students apply learnings from theoretical classes to manufacturing case studies by identifying best practices and also recognizing waste. The presentation shares experience in teaching of lean methods based on AR technology to graduate engineering students. [less ▲]

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See detailBioKC: a platform for quality controlled curation and annotation of systems biology models
Vega Moreno, Carlos Gonzalo UL; Groues, Valentin UL; Ostaszewski, Marek UL et al

Scientific Conference (2020, September 04)

Standardisation of biomedical knowledge into systems biology models is essential for the study of the biological function. However, biomedical knowledge curation is a laborious manual process aggravated ... [more ▼]

Standardisation of biomedical knowledge into systems biology models is essential for the study of the biological function. However, biomedical knowledge curation is a laborious manual process aggravated by the ever increasing growth of biomedical literature. High quality curation currently relies on pathway databases where outsider participation is minimal. The increasing demand of systems biology knowledge presents new challenges regarding curation, calling for new collaborative functionalities to improve quality control of the review process. These features are missing in the current systems biology environment, whose tools are not well suited for an open community-based model curation workflow. On one hand, diagram editors such as CellDesigner or Newt provide limited annotation features. On the other hand, most popular text annotations tools are not aimed for biomedical text annotation or model curation. Detaching the model curation and annotation tasks from diagram editing improves model iteration and centralizes the annotation of such models with supporting evidence. In this vain, we present BioKC, a web-based platform for systematic quality-controlled collaborative curation and annotation of biomedical knowledge following the standard data model from Systems Biology Markup Language (SBML). [less ▲]

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See detailScientific Instruments in Constcamer Paintings: Pictorial Space as a Context for Interpretation
Koeleman, Floor UL

Scientific Conference (2020, September)

Representations of scientific instruments abound in the seventeenth-century genre of constcamer paintings. These works of art depict interiors full of rich collections of artifacts, natural materials ... [more ▼]

Representations of scientific instruments abound in the seventeenth-century genre of constcamer paintings. These works of art depict interiors full of rich collections of artifacts, natural materials, animals and people, and were created almost exclusively in Antwerp and Brussels. In contrast to material and written sources, such images provide us with a context, captured in paint, which contributes to our understanding of the contemporary meaning of scientific instruments. This presentation will highlight the wide variety of instruments (mainly optical and mathematical) that are included in constcamer paintings. Depending on how we define ‘scientific instrument’, between 63 and 100 constcamer paintings from the early modern period can be identified as including representations of scientific instruments. The study of these images from the perspective of the visual and material culture of science not only provides further insight into the variety of instruments that existed at the time, but also sheds light on how painters produced these representations, either by using an actual object or by resorting to a preexisting depiction. It will be shown that the instruments in the paintings reflect a thriving glass industry and the activity of skilled goldsmiths in local workshops and at the archducal court. While over the course of the seventeenth century the novelty of such instruments declined, their association with knowledge of nature, the role of vision and the art of painting persisted. As such, the instruments in constcamer paintings denote both a practical and a philosophical dimension, relating to the world of the senses as well as the intellect. [less ▲]

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See detailNumerical Analysis of Interaction between a Reacting Fluid and a Moving Bed with Spatially and Temporally Fluctuating Porosity
Rousset, Alban UL; Mainassara Chekaraou, Abdoul Wahid UL; Besseron, Xavier UL et al

Scientific Conference (2020, August 31)

The purpose of this study is to propose a numerical approach that combines low computational costs through the use of high computing efficiency, allowing the realistic use of the design with a sufficient ... [more ▼]

The purpose of this study is to propose a numerical approach that combines low computational costs through the use of high computing efficiency, allowing the realistic use of the design with a sufficient result's accuracy for industrial applications to investigate biomass combustion in a large-scale reciprocating grate. In the present contribution, a Biomass combustion chamber of a 16 MW geothermal steam super-heater, which is part of the Enel Green Power "Cornia 2" power plant,is being investigated with high-performance computing methods. For this purpose, the extended discrete element method (XDEM) developed at the University of Luxembourg is used in an HPC environment, which includes both the moving wooden bed and the combustion chamber above it. The XDEM simulation platform is based on a hybrid four-way coupling between the Discrete Element Method (DEM) and Computational Fluid Dynamics (CFD). In this approach, particles are treated as discrete elements that are coupled by heat, mass, and momentum transfer to the surrounding gas as a continuous phase. For individual wood particles, besides the equations of motion, the differential conservation equations for mass, heat, and momentum are solved, which describe the thermodynamic state during thermal conversion. The grate system has three different moving sections to ensure good mixing of the biomass parts and appropriate residence time. The primary air enters from below the grate and is split into four different zones. Furthermore, a secondary air is injected at high velocity straight over the fuel bed through nozzles. A Flue Gas Recirculation is present and partly injected through two jets along the vertical channel and partly from below the grate. The numerical 3D model presented is based on a multi-phase approach. The biomass particles are taken into consideration via the XDEM Method, while the gaseous phase is described by CFD with OpenFOAM. Thus, the combustion of the particles on the moving beds in the furnace is processed by XDEM through conduction, radiation and conversion along with the interaction with the surrounding gas phase accounted for by CFD. The coupling of CFD-XDEM as an Euler-Lagrange model is used. The fluid phase is a continuous phase handled with an Eulerian approach and each particle is tracked with a Lagrangian approach. Energy, mass and momentum conservation is applied for every single particle and the interaction of particles with each other in the bed and with the surrounding gas phase are taken into account. An individual particle can have a solid, liquid, gas or inert material phases (immobile species) at the same time. The different phases can undergo a series of conversion through various reactions that can be homogeneous, heterogeneous or intrinsic (drying, pyrolysis, gasification and oxidation). Our first results are consistent with actual data obtained from the sampling of the residual solid in the industrial plant. Our model is also able to predict gas flux behaviour inside the furnace, particularly the flue gas recirculation on the combustion process injection. [less ▲]

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See detailWhen a Master Dies: Speculation and Asset Float
Penasse, Julien UL; Renneboog, L; Scheinkman, J

Scientific Conference (2020, August 28)

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See detailDecomposition schemes for symmetric n-ary bands
Devillet, Jimmy UL; Mathonet, Pierre

Scientific Conference (2020, August 27)

We extend the classical (strong) semilattice decomposition scheme of certain classes of semigroups to the class of idempotent symmetric n-ary semigroups (i.e. symmetric n-ary bands) where n \geq 2 is an ... [more ▼]

We extend the classical (strong) semilattice decomposition scheme of certain classes of semigroups to the class of idempotent symmetric n-ary semigroups (i.e. symmetric n-ary bands) where n \geq 2 is an integer. More precisely, we show that these semigroups are exactly the strong n-ary semilattices of n-ary extensions of Abelian groups whose exponents divide n-1. We then use this main result to obtain necessary and sufficient conditions for a symmetric n-ary band to be reducible to a semigroup. [less ▲]

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See detailDeliberative constitutionalism, popular sovereignty and alternative forms of government
Burks, Deven UL

Scientific Conference (2020, August 26)

Although deliberative democratic theory has traditionally positioned itself as a complement or corrective to representative bodies making ordinary law, it has recently expanded to the field of ... [more ▼]

Although deliberative democratic theory has traditionally positioned itself as a complement or corrective to representative bodies making ordinary law, it has recently expanded to the field of constitution-making and bodies formulating higher law. Yet this ‘deliberative constitutionalism’ has yet to confront two difficulties. First, ‘constitution- making’ is ambiguous between the process of drafting a constitution (‘making’), and the drafted system of institutions for collective action (‘constitution’). Thus far, scholarly attention has been squarely on the former, meaning that there is at best only a sketchy picture of a properly deliberative constitutional regime as an alternative to existing representative democratic constitutional regimes (see Parkinson 2016). Second, and as a direct consequence thereof, deliberative constitutionalists have not explored which alternative forms of government might be warranted by different deliberative constitutional regimes. In this paper, I tackle both these difficulties by modelling four different deliberative constitutional regimes – ‘deliberative containment’, ‘deliberative co-articulation’, ‘deliberative potential’, ‘deliberative ‘irritant’ (inspired by Loughlin and Walker 2007) – and by illustrating their characteristic institutional mechanisms, including such alternative institutions as one-shot or continuous sortition bodies, deliberative polls and maxi-public combined with varieties of plural voting, amongst others. In this way, I propose a clearer systemic vision of not just what alternative forms of government may be found under different deliberative constitutional regimes but which such regimes, with their expressed basic values, are liable to justify those alternative institutions. [less ▲]

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See detailEpistemic feasibility and interdependence in normative theorizing
Burks, Deven UL

Scientific Conference (2020, August 25)

If most agree that normative theorizing is constrained by an ‘ought implies can’ proviso and that feasibility consists in ‘overall human agential possibility’ (Valentini 2017: 24), widespread disagreement ... [more ▼]

If most agree that normative theorizing is constrained by an ‘ought implies can’ proviso and that feasibility consists in ‘overall human agential possibility’ (Valentini 2017: 24), widespread disagreement persists regarding different kinds of feasibility. One distinguishes between ‘hard’ and ‘soft’ limits on feasibility (Gilabert and Lawford-Smith 2012) but also between ‘binary’ and ‘scalar’ conceptions (Lawford-Smith 2013). Although philosophers have used such tools to explore logical, metaphysical, cultural and psychological species of feasibility, they have neglected epistemic feasibility. I attempt to close that gap by asking whether epistemic feasibility i.) sets stringent conditions on normative theorizing and ii.) takes priority over other feasibility conditions. In answer, I first elaborate an objection to normative theories presupposing expansive epistemic limits. I then show why that objection fails to heed the interdependent character of epistemic feasibility. The objection holds that there exists a disanalogy between epistemic feasibility and other species. Unlike institutional, cultural or motivational resources, human epistemic resources are fallible and fixed, leaving it unclear how and how far limits on cognitive and rational capacities are removable (Dipaolo 2019). The objection concludes that facts about cognitive and rational capacities must be taken for granted in normative theorizing. Evolutionary processes and AI advances are unpredictable in terms of correcting fully for cognitive and rational fallibility. Genetic engineering or neural reprogramming seem ethically fraught, unreasonable means for correction. Either way, human access to improved informational outputs would still be mediated by fallible epistemic processes. Wherefore two refined provisos for normative theorizing. First, if ‘ought implies epistemic can’, theories presupposing expansive epistemic limits cannot guide individual or collection action. This discounts such approaches as theories of justice supposing impossible perspectives or perfect information, theories of governance entailing centrally planned economies or global states with perfect information, etc. Second, if ‘epistemic ought implies can’, philosophers must avoid elaborating and justifying normative theories presupposing expansive epistemic limits. Nevertheless, the objection fails by focusing exclusively on individual epistemic feasibility and ignoring epistemic interdependence qua distributed epistemic feasibility. Philosophers understand epistemic limits expansively because the world (as accessible to humans) resists representation in a single picture of the world. Those limits necessitate abstraction from certain real-world conditions to find a model suitable for a specific problem. Comparing different models – each suited for a specific problem – may generate a more adequate overall picture. If epistemic limits condition working with multiple pictures (i.e. epistemically perfect agents could not) and multiple pictures are necessary to navigate the environment, epistemic feasibility is distributed across interdependent epistemic agents. Philosophers count on others to assume away different epistemic limits which complement her normative theorizing’s assumptions. Analyzed as a set, their assumptions cancel one another out, and epistemic feasibility obtains collectively. Thus, epistemic limits are assumed away because epistemic feasibility itself requires expansive limits. Although there may be a disanalogy between epistemic feasibility and other species, the objection is mistaken about its nature. Epistemic feasibility just is a matter of epistemic interdependence. [less ▲]

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See detailSHARP 2020: The 1st Shape Recovery from Partial Textured 3D Scans Challenge Results
Saint, Alexandre Fabian A UL; Kacem, Anis UL; Cherenkova, Kseniya UL et al

Scientific Conference (2020, August 23)

The SHApe Recovery from Partial textured 3D scans challenge, SHARP 2020, is the first edition of a challenge fostering and benchmarking methods for recovering complete textured 3D scans from raw ... [more ▼]

The SHApe Recovery from Partial textured 3D scans challenge, SHARP 2020, is the first edition of a challenge fostering and benchmarking methods for recovering complete textured 3D scans from raw incomplete data. SHARP 2020 is organized as a workshop in conjunction with ECCV 2020. There are two complementary challenges, the first one on 3D human scans, and the second one on generic objects. Challenge 1 is further split into two tracks, focusing, first, on large body and clothing regions, and, second, on fine body details. A novel evaluation metric is proposed to quantify jointly the shape reconstruction, the texture reconstruction, and the amount of completed data. Additionally, two unique datasets of 3D scans are proposed, to provide raw ground-truth data for the benchmarks. The datasets are released to the scientific community. Moreover, an accompanying custom library of software routines is also released to the scientific community. It allows for processing 3D scans, generating partial data and performing the evaluation. Results of the competition, analyzed in comparison to baselines, show the validity of the proposed evaluation metrics and highlight the challenging aspects of the task and of the datasets. Details on the SHARP 2020 challenge can be found at https://cvi2.uni.lu/sharp2020/ [less ▲]

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See detail3DBooSTeR: 3D Body Shape and Texture Recovery
Saint, Alexandre Fabian A UL; Kacem, Anis UL; Cherenkova, Kseniya UL et al

Scientific Conference (2020, August 23)

We propose 3DBooSTeR, a novel method to recover a textured 3D body mesh from a textured partial 3D scan. With the advent of virtual and augmented reality, there is a demand for creating realistic and high ... [more ▼]

We propose 3DBooSTeR, a novel method to recover a textured 3D body mesh from a textured partial 3D scan. With the advent of virtual and augmented reality, there is a demand for creating realistic and high-fidelity digital 3D human representations. However, 3D scanning systems can only capture the 3D human body shape up to some level of defects due to its complexity, including occlusion between bodyparts, varying levels of details, shape deformations and the articulated skeleton. Textured 3D mesh completion is thus important to enhance3D acquisitions. The proposed approach decouples the shape and texture completion into two sequential tasks. The shape is recovered by an encoder-decoder network deforming a template body mesh. The texture is subsequently obtained by projecting the partial texture onto the template mesh before inpainting the corresponding texture map with a novel approach. The approach is validated on the 3DBodyTex.v2 dataset [less ▲]

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See detailMeasuring Macroeconomic Tail Risk
Penasse, Julien UL; Marfè, R

Scientific Conference (2020, August 20)

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See detailThe ESP estimator
Holcblat, Benjamin UL; Sowell, Fallaw

Scientific Conference (2020, August 17)

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See detailCollective Knowledge Production in Educational Ethnography: From Team-Ethnography to European Cooperation and Beyond
Maeder, Christoph; Kuhn, Melanie; Neumann, Sascha et al

Scientific Conference (2020, August)

Ethnography can be regarded as being inherently collaborative (see: Lassiter 2005). But if we accept ethnography as a collaborative, cooperative and joint production of knowledge, many questions namely ... [more ▼]

Ethnography can be regarded as being inherently collaborative (see: Lassiter 2005). But if we accept ethnography as a collaborative, cooperative and joint production of knowledge, many questions namely around cooperation within and between people, projects, disciplines, places, organizations and research teams etc. arise. In this panel discussion we want to explore and discuss questions and challenges of different levels of collaboration, or ways of working together in educational ethnography under the auspices of the production of knowledge on education. [...] [less ▲]

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See detailStationkeeping in Earth-Moon Near Rectilinear Halo Orbits
Muralidharan, Vivek UL; Howell, Kathleen C.

Scientific Conference (2020, August)

Near Rectilinear Halo Orbits (NRHOs) are stable or nearly stable orbits that are defined as part of the L1 and L2 halo orbit families in the circular restricted three-body problem. Within the Earth-Moon ... [more ▼]

Near Rectilinear Halo Orbits (NRHOs) are stable or nearly stable orbits that are defined as part of the L1 and L2 halo orbit families in the circular restricted three-body problem. Within the Earth-Moon regime, the L2 NRHOs offer candidate trajectories for the upcoming Gateway mission. The spacecraft, however, incurs continuous deviations due to unmodeled forces and orbit determination errors in this dynamically sensitive region. The current investigation focuses on a technique to maintain the spacecraft near a virtual reference orbit despite these uncertainties. For the stationkeeping scheme, flow dynamics in the region are utilized to categorically identify appropriate maneuver and target locations. The investigation reflects the impact of various factors on maneuver cost and efficacy. Additional feedback control is applied for phasing constraints. [less ▲]

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See detailA professional development course in translanguaging: Teachers’ beliefs and attitudes
Aleksic, Gabrijela UL; Bebić, Džoen Dominique UL

Scientific Conference (2020, August)

To support preschool teachers with applying the new law that declared multilingual education mandatory in Luxembourg, we offer a professional development course in translanguaging. Our first goal is to ... [more ▼]

To support preschool teachers with applying the new law that declared multilingual education mandatory in Luxembourg, we offer a professional development course in translanguaging. Our first goal is to address teachers’ negative attitudes and beliefs towards children’s multilingualism, proficiency in their home languages, and teachers’ use of French and English. [less ▲]

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See detailPeer influence in individuals with developmental disabilities
Zurbriggen, Carmen UL

Scientific Conference (2020, August)

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See detailManaging residence permits and migrant unemployment during the COVID-19 crisis
Sommarribas, Adolfo UL

Scientific Conference (2020, July 30)

This presentation deals on how immigration authorities in European Union Member States and Norway dealt with third-country national residence permits and how they are dealing with third-country nationals ... [more ▼]

This presentation deals on how immigration authorities in European Union Member States and Norway dealt with third-country national residence permits and how they are dealing with third-country nationals who are losing their employment in regard to their right to stay in the host countries. [less ▲]

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See detailWorking with Deep Generative Models and Tabular Data Imputation
Camino, Ramiro Daniel UL; Hammerschmidt, Christian UL; State, Radu UL

Scientific Conference (2020, July 17)

Datasets with missing values are very common in industry applications. Missing data typically have a negative impact on machine learning models. With the rise of generative models in deep learning, recent ... [more ▼]

Datasets with missing values are very common in industry applications. Missing data typically have a negative impact on machine learning models. With the rise of generative models in deep learning, recent studies proposed solutions to the problem of imputing missing values based various deep generative models. Previous experiments with Generative Adversarial Networks (GANs) and Variational Autoencoders (VAEs) showed promising results in this domain. Initially, these results focused on imputation in image data, e.g. filling missing patches in images. Recent proposals addressed missing values in tabular data. For these data, the case for deep generative models seems to be less clear. In the process of providing a fair comparison of proposed methods, we uncover several issues when assessing the status quo: the use of under-specified and ambiguous dataset names, the large range of parameters and hyper-parameters to tune for each method, and the use of different metrics and evaluation methods. [less ▲]

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See detailEthische Aspekte im reflexiven Schulpraktikum. Eine Ethik des Lebens für Praxisbegleiter
Weber, Jean-Marie UL

Scientific Conference (2020, July 03)

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See detailSTEAM Education in elementary schools: A holistic investigation on technology enhanced teaching and learning
Haas, Ben; Lavicza, Zsolt; Kreis, Yves UL

Scientific Conference (2020, July 03)

When we address the learning of mathematics in elementary school, we imagine pupils doing experiments, discoveries, and combining the different elements from arithmetics to geometry. Pupils interact with ... [more ▼]

When we address the learning of mathematics in elementary school, we imagine pupils doing experiments, discoveries, and combining the different elements from arithmetics to geometry. Pupils interact with their environment and try to use their learned skills to get a deeper understanding of the world. They engage in a mathematical thinking process and try to interact with their environment. However, when you visit a classroom, you find a rather old fashioned teaching based on a deductive approach where imitations of technics play an essential role. Based on our observations, pupils learn mainly through to repetitions in textbooks. Experimentation, if any, comes as additional work, it is seen as a ludic activity rather than as real learning activity. In our research, we inquired about different ways to engage pupils in an experimental approach. We used digital and physical modulation, augmented reality, and various educational technologies. In one of our first studies, we designed a tutoring system to foster process-related skills in mathematics within the educational software MathemaTIC . We collected data on pupils in assessments on transferring mathematical thinking from instructional technology to the everyday classroom teaching. In a second study, we worked with pupils from elementary schools, kindergarten, and from the special needs section to go beyond two-dimensional representations and discover how mathematics operates in three-dimensional settings. Pupils worked on designing software and three-dimensional printing. We collected data on how pupils and parents perceived the learning and teaching and how this influences the further thinking in mathematics. In a holistic approach, we aimed to identify how pupils, teachers and parents perceive the learning through these new technologies and how it affects the learning and teaching. Our research happened in onsite and remote teaching. In this conference, we will present results from the different studies, give insights into our research, and present future experimental investigations. [less ▲]

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See detailCrossing borders – feeling connected? Exploring the sense of belonging
Murdock, Elke UL; Albert, Isabelle UL

Scientific Conference (2020, July 02)

Migrants find themselves living in a society with different practices, norms and values to their culture of origin. Migration is a life transition that entails changes in social and emotional belonging ... [more ▼]

Migrants find themselves living in a society with different practices, norms and values to their culture of origin. Migration is a life transition that entails changes in social and emotional belonging. This panel focuses on the question how migrants establish bonds in their receiving country. How do migrants negotiate their sense of belonging to the host and / or home country? What determines the strength of attachment to either of both? The present panel brings together researchers from three different countries who focus on the sense of belonging of different migrant populations. First, Isabelle Albert presents findings from a research project that examined intergenerational value transmission and cultural attachment to Portugal and Luxembourg among first and second-generation migrants in Luxembourg. Intergenerational relationships and migration are also the focus of Carlos Barros’ presentation. He presents findings from a qualitative study on intergenerational solidarity and maps solidarity patterns for different migrant groups. Jean Décieux presents identity constructions of international mobiles. The German Emigration and Remigration Panel study (GERPS) covers the migration trajectories of about 11,000 individuals. Patterns of belonging will be highlighted and discussed. Débora Maehler presents insights from a meta-analysis on the sense of belonging of young immigrants in Germany. Factors determining the strength of belonging to either their country of origin or Germany will be explored. The panel closes with a contribution by Elke Murdock on the host country perspective. She presents results from a quantitative study on criteria and predictors for the acceptance of new citizens as belonging by natives. [less ▲]

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