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See detailThe Occupied Museum. Culture and Science in Luxemburg during the Nazi Occupation, 1940–1944
Spirinelli, Fabio UL

Scientific Conference (2019, October 24)

Prior to the invasion of the Grand Duchy of Luxembourg by Nazi Germany on May 10, 1940, national research infrastructures were barely developed. A university did not exist. Research was mainly carried out ... [more ▼]

Prior to the invasion of the Grand Duchy of Luxembourg by Nazi Germany on May 10, 1940, national research infrastructures were barely developed. A university did not exist. Research was mainly carried out in the Grand-Ducal Institute, comparable to a scientific academy, and within the State Museum. During the occupation, the Germans introduced a civil administration and constitutional institutions were consequently abolished. Furthermore, the occupying power aimed at neutralizing French influence in Luxembourg while implementing a policy of ʻteutonizationʼ or ʻgermanizationʼ. From a National Socialist perspective, Luxembourg was considered a territory adherent to the German nation. Though the desired annexation of Luxembourg to the Third Reich did not happen, the measures implemented by the regime and the incorporation of the country into the Gau Moselland in February 1941 meant a de facto annexation. New policies implemented by the Nazi regime affected all spheres of social, cultural, and economic life. In the area of culture and science, plans were drafted to build new institutions or expand existing ones. Cultural and research societies were reorganised or disbanded. Theatres, libraries and museums became propaganda tools to diffuse and consolidate an official German culture. The state museum, renamed Landesmuseum during the occupation, expanded its collection and increased its staff. While the origins of objects and artefacts acquired during the occupation are not entirely clear, the museum strengthened its public role as a protector and conservator of cultural heritage. My paper aims at exploring how the occupation has shaped research in both sciences and humanities and their related institutions. A comparative view that considers other occupied countries and the Third Reich will be complemented by a case study related to the Landesmuseum during the four-year occupation. Three questions are at the core of the present contribution: How were the research infrastructures incorporated into the new administration? How did the museum adapt to and cope with a situation out of the ordinary? What worldview was to be disseminated to the general public and which particular elements of this worldview were disseminated through cultural and research institutions? My contribution takes into account the relationship between structures (both administrative and legislative), actors, and discourses. Additionally, specific difficulties related to the currently available primary sources will be dealt with and the ambiguous scientific relations between Germany and Luxembourg before the war will be examined. [less ▲]

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See detailInformation Content of Systematic and Idiosyncratic Risk Disclosure
Weber, Véronique UL; Muessig, Anke UL

Scientific Conference (2019, October 24)

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See detailPrivacy-Preserving Processing of Filtered DNA Reads
Fernandes, Maria UL; Decouchant, Jérémie UL; Volp, Marcus UL et al

Scientific Conference (2019, October 22)

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See detailDiscussion of "Do ETFs Increase Liquidity?" by Mehmet Saglam, Tugkan Tuzun and Russ Wermers
Holcblat, Benjamin UL

Scientific Conference (2019, October 18)

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See detailRussians in Luxembourg: Russische Immigration nach Luxemburg 1918-1935: Einwanderer aus einem nicht-existierenden Land
Ganschow, Inna UL

Scientific Conference (2019, October 18)

Die Einwanderer_innen aus dem früheren Russischen Reich trugen zur Arbeiterlandschaft im Süden, Norden und Osten Luxemburgs nach dem Ersten Weltkrieg bei. Nimmt man diese „Russen“ genauer unter die Lupe ... [more ▼]

Die Einwanderer_innen aus dem früheren Russischen Reich trugen zur Arbeiterlandschaft im Süden, Norden und Osten Luxemburgs nach dem Ersten Weltkrieg bei. Nimmt man diese „Russen“ genauer unter die Lupe, zeigen sich mindestens drei neue Gruppen, die die bereits vor 1914 bestehende russische Gemeinde vergrößerten. Die ersten sind die ehemaligen Kriegsgefangenen aus den Lagern in Frankreich, Belgien und Deutschland. Ein Teil ist vor Kriegsende als Flüchtlinge im Lande, die anderen kommen nach dem Waffenstillstand im November 1918. Sie wollen nicht zurück nach Russland, wo der Bürgerkriegt tobt. Die zweite Gruppe kommt im Laufe des Bürgerkrieges um 1926-1929 aus Bulgarien und Serbien nach. Es handelt sich um noch zusammenhaltende Weißgardisten, die zu der über die Krim in die Türkei evakuierte Armee von Petr Wrangel gehörten. Schließlich ist die dritte Gruppe der zivilen politischen Flüchtlinge zu erwähnen, die seit den frühen 1920ern meistens über Deutschland nach Luxemburg kamen und öfters Angehörigen der jüdischen Glaubensgemeinschaft waren. Viele von ihnen sind bereits seit den intensivierten Pogromen der ersten russischen Revolution von 1905 in Europa. Die Wanderungsstrukturen dieser verschiedenen und sehr heterogenen Gruppen von „Russen“ stehen im Mittelpunkt des Vortrags. [less ▲]

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See detailMonitoring du système scolaire – Le modèle luxembourgeois (invited talk)
Fischbach, Antoine UL

Scientific Conference (2019, October 17)

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See detailApproche européenne sur l'entreprise : de la nouveauté ?
Corbisier, Isabelle UL

Scientific Conference (2019, October 17)

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See detailOral History Choices in the Digital Age: An International Perspective
Lambert, Douglas UL

Scientific Conference (2019, October 17)

Indexing oral histories digitally at the timecode level is a practice increasingly adopted for collections, often with the goal of creating online access to recordings. A particular attraction to using an ... [more ▼]

Indexing oral histories digitally at the timecode level is a practice increasingly adopted for collections, often with the goal of creating online access to recordings. A particular attraction to using an index is that it can be generated in less time than a transcript, especially when both must be done manually. Indexing provides convenient access to original recordings and can be a platform for decision-making about a collection over time, for researchers or collection stewards. In my current work in digital oral history at the University of Luxembourg’s Centre for Contemporary and Digital History (C2DH), indexing is being embraced for these strategic and practical benefits. However, indexing approaches I promoted previously in the US will need to be re-envisioned, retooled, and otherwise adapted for new and different cultural and technological contexts. In Europe, many oral history projects tend to be focused on journalistic-style research, so the goal of recording and indexing is different; curating, archiving, and publishing recordings is not necessarily expected or assumed. In Luxembourg and elsewhere in Europe, there is great interest in applying technology-centered analyses to oral history corpora (e.g., topic modeling, sentiment analysis, corpus linguistics, etc.), work predicated on high-quality transcripts rather than indexing. At the same time, improvements have been made in other technology/transcript-centered methods of analysis, such as keyword extraction, named entity recognition, and automated indexing—all of which could advance and improve oral history indexing and analysis practice. These new approaches will be more viable as speech recognition technology continues to improve, making transcripts easier and cheaper to create. As these factors converge, a new balance between transcription, indexing, and human interpretation will develop that supports both conventional oral history uses as well as secondary collection research activities. [less ▲]

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See detailRegards belges sur le Luxembourg 1919-1921
Brüll, Christoph UL

Scientific Conference (2019, October 17)

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See detailRegards allemands sur le Luxembourg
Brüll, Christoph UL

Scientific Conference (2019, October 17)

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See detailTravail frontalier en Suisse et au Luxembourg : mobilités, profils et défis
Pigeron-Piroth, Isabelle UL; Helfer, Malte UL; Belkacem, Rachid

Scientific Conference (2019, October 15)

La Suisse et le Luxembourg sont particulièrement concernés par le travail frontalier. Ces deux pays accueillent à eux seuls plus d’un demi-million de travailleurs frontaliers et recourent à la main ... [more ▼]

La Suisse et le Luxembourg sont particulièrement concernés par le travail frontalier. Ces deux pays accueillent à eux seuls plus d’un demi-million de travailleurs frontaliers et recourent à la main-d’œuvre frontalière depuis plusieurs décennies. Petits pays dynamiques ayant d’importants besoins de main-d’œuvre, ils se caractérisent par des différentiels liés à la présence de frontières (différentiels de prix immobiliers, de taux de chômage, de salaires, de niveaux d’activité économique … avec les pays voisins). Ces différentiels entretiennent la dynamique du travail frontalier (Belkacem et Pigeron-Piroth, 2016). [less ▲]

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See detailInside the Trading Zone: Doing Digital Hermeneutics in an Interdisciplinary Setting
van der Heijden, Tim UL; Tatarinov, Juliane UL

Scientific Conference (2019, October 11)

Our contribution examines the conference theme of digital hermeneutics from the perspective of the Doctoral Training Unit (DTU) in ‘Digital History and Hermeneutics’, a four-year interdisciplinary ... [more ▼]

Our contribution examines the conference theme of digital hermeneutics from the perspective of the Doctoral Training Unit (DTU) in ‘Digital History and Hermeneutics’, a four-year interdisciplinary research and training program hosted by the Centre for Contemporary and Digital History (C²DH) at the University of Luxembourg. The DTU is designed as an experimental platform for collaboration or ‘trading zone’, in which thirteen doctoral candidates with different disciplinary backgrounds – from history, linguistics and philosophy to computer and information science – study and reflect on the epistemological and methodological implications of the ‘digital turn’ on historical research. This presentation reflects on the project’s first year, in which the doctoral candidates were introduced to various skills and methods in digital humanities, including text mining, digital source criticism, database structures, data visualization, GIS analysis, tool criticism and algorithmic critique; and its second year, when data collections had been created and research tools identified that were going to be applied to it. By doing so, it presents some of the main practical and epistemological opportunities and challenges of “thinkering” with digital tools and technologies in the Digital History Lab of the C2DH, and it reflects scientific dissemination strategies for the group and the individual. The analysis is informed by studies on interdisciplinarity, digital humanities infrastructures and communities of practice. It furthermore draws on a series of semi-structured interviews and self-reflexive training reports, in which the doctoral candidates of the DTU reflect on their experiences in doing digital hermeneutics in an interdisciplinary setting. [less ▲]

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

Scientific Conference (2019, October 08)

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See detailDemountable Steel Connections
Lam, Dennis; Odenbreit, Christoph UL; Yang, Jie et al

Scientific Conference (2019, October 08)

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See detailA Falta que nos move (Le manque qui nous meut) : création documentaire de Christiane Jatahy
Deregnoncourt, Marine UL

Scientific Conference (2019, October 05)

Pour tenter de contribuer humblement au propos de ce colloque intitulé : « Quand les femmes filment : le documentaire dans la péninsule ibérique et dans le continent latino-américain », nous nous ... [more ▼]

Pour tenter de contribuer humblement au propos de ce colloque intitulé : « Quand les femmes filment : le documentaire dans la péninsule ibérique et dans le continent latino-américain », nous nous proposons d’analyser A Falta que nos move (Le manque qui nous meut) de Christiane Jatahy. Depuis 2002, les créations hybrides de cette auteure, metteure en scène et cinéaste carioca se situent sur une « ligne ténue entre réalité et fiction »1. A Falta que nos move en témoigne. En 2005, A Falta que nos move est tout d’abord une création scénique qui est, durant trois ans, présentée dans de nombreux festivals brésiliens et européens. Ensuite, en 2008, A Falta que nos move devient un long métrage documenté tourné en treize heures au sein duquel l’entre-deux théâtre / cinéma génère une tension radicale entre la réalité et la fiction. Cette expérience filmique se situe à la frontière avec la télé-réalité : cinq amis acteurs trentenaires brésiliens se réunissent la veille de Noël. Chacun a grandi sous la dictature militaire, façonné par les produits culturels américains. Ils attendent un invité et s’adressent continuellement au public. Comment Christiane Jatahy procède-t-elle ? Quelle est sa manière de travailler avec les acteurs pour en arriver à brouiller les rapports entre les personnes physiques et les personnages fictifs ? Comment un vrai parti pris esthétique et dramaturgique apparaît-il ? Comment le cinéma influence-t-il le théâtre et vice versa ? C’est précisément à toutes ces questions que nous entendons répondre. [less ▲]

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See detailWYLD Special Symposium: Technological Innovations in Dementia Diagnosis and Care
Leist, Anja UL

Scientific Conference (2019, October)

Researchers and entrepreneurs present technological innovations in dementia diagnosis and care, particularly through the use of wearables, apps, and novel data analysis techniques. These innovations ... [more ▼]

Researchers and entrepreneurs present technological innovations in dementia diagnosis and care, particularly through the use of wearables, apps, and novel data analysis techniques. These innovations address complex challenges of differential dementia diagnosis and ensuring high-quality and safe home and formal care. [less ▲]

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See detailGender inequalities across the life course: A societal perspective on gender differences in dementia
Leist, Anja UL; Ford, Katherine Joy UL

Scientific Conference (2019, October)

Introduction. Women are at increased risk of developing dementia, which can only partly be explained with differences in longevity, sex biology, or differences in detection/diagnosis. A promising approach ... [more ▼]

Introduction. Women are at increased risk of developing dementia, which can only partly be explained with differences in longevity, sex biology, or differences in detection/diagnosis. A promising approach at the population level is the systematic investigation of life course conditions for men and women across countries and cohorts in order to detect if schooling or work opportunities differ by gender. In the cognitive reserve framework, education and work reflect opportunities for cognitively stimulating activities, which increase cognitive reserve across the life course, and which could delay cognitive decline and the diagnosis of dementia. Method. We develop a framework for systematizing gender inequalities across different life stages and life domains, with a focus on systematic disadvantages for women that could be relevant barriers to cognitive reserve development. For the empirical analysis, we gather individual information and performance on cognitive tests from several harmonized cross-national aging surveys, i.e. the U.S. Health and Retirement Study and sister studies (SHARE, ELSA, SAGE), separated by cohort. Historical figures on gender inequalities for countries and cohorts, and their relevant timings in the life course of the older respondents, e.g. during schooling, were gathered from different sources, and merged with the individual-level data. Results. The new framework leads to testable hypotheses in both the Western and global context regarding life-course socialization and schooling and work opportunities that have been different for men and women. We will present preliminary evidence of how female (dis)advantages on different cognitive tests – memory, executive functioning – are mirroring societal gender inequalities. Discussion. We need to better understand how different life-course opportunities for men and women can create gender differences in dementia at old ages in order to identify individuals at risk today and improve conditions for future generations. [less ▲]

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See detailExploring the value of user-generated app data to design and improve urban running environments
van Renswouw, Loes; Bogers, Sander; Lallemand, Carine UL et al

Scientific Conference (2019, October)

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See detailP3LS : Plausible Deniability for Practical Privacy-Preserving Live Streaming
Decouchant, Jérémie UL; Boutet, Antoine; Yu, Jiangshan et al

Scientific Conference (2019, October)

Video consumption is one of the most popular Internet activities worldwide. The emergence of sharing videos directly recorded with smartphones raises important privacy concerns. In this paper we propose ... [more ▼]

Video consumption is one of the most popular Internet activities worldwide. The emergence of sharing videos directly recorded with smartphones raises important privacy concerns. In this paper we propose P3LS , the first practical privacy-preserving peer-to-peer live streaming system. To protect the privacy of its users, P3LS relies on k-anonymity when users subscribe to streams, and on plausible deniability for the dissemination of video streams. Specifically, plausible deniability during the dissemination phase ensures that an adversary is never able to distinguish a user’s stream of interest from the fake streams from a statistical analysis (i.e., using an analysis of variance). We exhaustively evaluate P3LS and show that adversaries are not able to identify the real stream of a user with very high confidence. Moreover, P3LS consumes 30% less bandwidth than the standard k-anonymity approach where nodes fully contribute to the dissemination of k streams. [less ▲]

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See detailEFFECTS OF MULTIPLE OSCILLATOR PHASE NOISE IN PRECODING PERFORMANCE
Martinez Marrero, Liz UL; Merlano Duncan, Juan Carlos UL; Querol, Jorge UL et al

Scientific Conference (2019, October)

Satellite Precoding is a promising technique to meet the target data rates of the future high throughput satellite systems and the costs per bit as required by 5G applications and networks, but it ... [more ▼]

Satellite Precoding is a promising technique to meet the target data rates of the future high throughput satellite systems and the costs per bit as required by 5G applications and networks, but it requires strict synchronization among the transmitted waveforms, in addition to accurate channel state information. Most of the published work about this topic consider ideal oscillators, but in practice, the output of an oscillator is not a single spectral line at the nominal frequency. This paper proposes a model for the oscillator phase noise and analyzes the resulting received signal to interference plus noise ratio (SNIR) in a satellite communication system using Precoding. Simulations of a communication satellite system with a two-beam transponder and two receivers were performed to compute the effective SNIR. This work uses a simulator which also considers practical impairments such as time misalignment, errors in the channel state information, interference, thermal noise and phase noise masks for satellite oscillators. The Precoding methods used for the analysis are Zero Forcing (ZF) and Minimum Mean Square Error (MMSE). The obtained results prove that there is a degradation in the performance due to the use of independent oscillators but this effect is compensated by the precoding matrix. [less ▲]

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See detailL’UniGR-Center for Border Studies et ses outils d’analyse
Wille, Christian UL; Dethier, Perrine

Scientific Conference (2019, October)

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See detailFlood Detection On Low Cost Orbital Hardware
Mateo-Garcia, Gonzalo; Oprea, Silviu; Smith, Lewis et al

Scientific Conference (2019, October)

Satellite imaging is a critical technology for monitoring and responding to natural disasters such as flooding. Despite the capabilities of modern satellites, there is still much to be desired from the ... [more ▼]

Satellite imaging is a critical technology for monitoring and responding to natural disasters such as flooding. Despite the capabilities of modern satellites, there is still much to be desired from the perspective of first response organisations like UNICEF. Two main challenges are rapid access to data, and the ability to automatically identify flooded regions in images. We describe a prototypical flood segmentation system, identifying cloud, water and land, that could be deployed on a constellation of small satellites, performing processing on board to reduce downlink bandwidth by 2 orders of magnitude. We target PhiSat-1, part of the FSSCAT mission, which is planned to be launched by the European Space Agency (ESA) near the start of 2020 as a proof of concept for this new technology. [less ▲]

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See detailDie Maske des Bösen : Lombroso, Fu-Manchu, Mabuse
Kohns, Oliver UL

Scientific Conference (2019, October)

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See detailThree models of flexible talent management
Usanova, Ksenia UL; Geraudel, Mickaël UL; D'Armagnac, Sophie et al

Scientific Conference (2019, September 30)

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See detailHow To Attract And Retain Talents In Not-For-Profit Organizations?
Usanova, Ksenia UL; Telitsina, Aleksandra; Geraudel, Mickaël UL

Scientific Conference (2019, September 30)

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See detailQualitative interviewing in multilingual research
Kalocsanyiova, Erika UL; Shatnawi, Malika

Scientific Conference (2019, September 27)

A growing body of research in super-diverse societies is conducted, by necessity, in multiple languages. Multilingual research practices can play a fundamental role in empowering participants and ... [more ▼]

A growing body of research in super-diverse societies is conducted, by necessity, in multiple languages. Multilingual research practices can play a fundamental role in empowering participants and privileging their voices, especially in migration-related studies. Yet, questions of cross-language interviewing are for the most part avoided or ignored in mainstream research. This contribution seeks to bring cross-language communication back into the focus of methodological discussions. Our paper builds on multilingual interview material extracted from a two-year linguistic ethnographic research project on forced migrants’ integration trajectories in Luxembourg. It looks at interpreter-mediated research encounters, as well as interviewees’ translation and translanguaging moves. Audio recordings and field notes from collaborative data analysis sessions underpin the data for this contribution. Our examples show that there is merit in fixing our analytical gaze on the minute details of language use across different codes, as these allow for a novel inquiry into specific moments of meaning making, role performances and rapport-building in qualitative interviewing. [less ▲]

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See detailThe Discovery of Ghijsbrecht Donckere’s Perpetuum Mobile: Visual Proof of the First Barometer?
Koeleman, Floor UL

Scientific Conference (2019, September 27)

Ghijsbrecht Donckere is sometimes associated with the invention of the barometer, based on two textual sources from about 1620. No visual record was known of Donckere’s instrument, which was referred to ... [more ▼]

Ghijsbrecht Donckere is sometimes associated with the invention of the barometer, based on two textual sources from about 1620. No visual record was known of Donckere’s instrument, which was referred to as a perpetuum mobile, until now. The rediscovery of a third source, and more importantly, the identification of his device on a contemporary painting, calls for a reassessment. The surroundings of the perpetual motion machine as represented in paint place this instrument at the intersection of natural philosophy and mechanical engineering. Donckere’s invention appears to be loosely based on Cornelis Drebbel’s perpetuum mobile (ca. 1607), and was commissioned by a courtly couple that was already partially informed about the hidden cause of motion of this machine. Nevertheless, the symbolic meaning of the object, rather than an understanding of its actual workings, is put on display. Donckere’s instrument is thus inextricably linked to one of the Aristotelian senses, and to concepts of astronomy and harmony, such as the primum mobile and musica universalis. Even though the textual evidence suggests that the device was at some point used to predict the weather, a reinterpretation particularly emphasizes the rhetoric of the time. The sources do not indicate that the effect of atmospheric pressure was already known. Taking these observations into account, the label of barometer does not seem applicable to Donckere’s perpetuum mobile. The newly revealed visual proof portrays the instrument instead as a collector’s item to be interpreted intellectually by an elite clientele in the early seventeenth century. [less ▲]

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See detailReal-time Radio Frequency Interference Detection and Mitigation with the Front-End GNSS Interference eXcisor (FENIX)
Querol Borras, Jorge UL; Perez, Adrian; Munoz-Martin, Joan Francesc et al

Scientific Conference (2019, September 26)

The number of applications based on Global Navigation Satellite Systems (GNSS) has been increasing in the last years. With its proliferation, Radio-Frequency Interference (RFI) has become one of the most ... [more ▼]

The number of applications based on Global Navigation Satellite Systems (GNSS) has been increasing in the last years. With its proliferation, Radio-Frequency Interference (RFI) has become one of the most concerning topics on GNSS-based devices for navigation, positioning and timing, but also for Earth Observation purposes such as GNSS-Reflectometry (GNSS-R) and GNSS-Radio Occultations (GNSS-RO) due to the corruption of the received signal and the corresponding geophysical measurements. The Front-End GNSS Interference eXcisor (FENIX) mitigates the problem of RFI by providing a plug-and-play solution which, placed between the antenna and the receiver, excises virtually any kind of interference signal, as its mitigation algorithm is agnostic on the particular type of RFI. The new version of FENIX is also capable of operating with large signal bandwidths ($\sim$50 MHz) and dual-band applications (e.g. L1 + L2 or L1/E1 + L5/E5). This paper shows the performance of the system for commercial GNSS receivers and GNSS-R applications. The use of FENIX in Microwave Radiometers is also possible, but it is out of the scope of this paper. [less ▲]

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See detailTHE MARKET SKEWNESS-RETURN RELATIONSHIP, Plenary Talk
Lehnert, Thorsten UL

Scientific Conference (2019, September 25)

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See detail‘Bis zum Anthropozän und noch viel weiter’: Space Mining in Luxemburger Hörspielen
Thiltges, Sébastian UL

Scientific Conference (2019, September 25)

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See detailEarly-stage topological and technological choices for TSN-based communication architectures
Navet, Nicolas UL; Villanueva, Josetxo; Migge, Jörn

Scientific Conference (2019, September 24)

A main issue in the design of automotive communication architectures is that the most important design choices pertaining to the topology of the networks and the technologies to use (protocols, data rate ... [more ▼]

A main issue in the design of automotive communication architectures is that the most important design choices pertaining to the topology of the networks and the technologies to use (protocols, data rate, hardware) have to be made at a time when the communication requirements are not entirely known. Indeed, many functions only becomes available along the development cycle, and vehicle platforms have to support incremental evolutions of the embedded system that may not be fully foreseeable at the time design choices are made. The problem is becoming even more difficult and crucial with the introduction of dynamically evolving communication requirements requiring network re-configuration at run-time. We present how the use of synthetic data, that is data generated programmatically based on past vehicle projects and what can be foreseen for the current project, enables the designers to make such early stage choices based on quantified metrics. The proposals are applied to Groupe Renault's FACE service-oriented E/E architecture with the use of a software-implemented function we called “Topology Stress Test”. [less ▲]

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See detailMoney Laundering and Cryptocurrencies
Allegrezza, Silvia UL

Scientific Conference (2019, September 24)

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See detailProceedings of the Deduktionstreffen 2019
Schon, Claudia; Steen, Alexander UL

Scientific Conference (2019, September 23)

The annual meeting Deduktionstreffen is the prime activity of the Special Interest Group on Deduction Systems (FG DedSys) of the AI Section of the German Society for Informatics (GI-FBKI). It is a meeting ... [more ▼]

The annual meeting Deduktionstreffen is the prime activity of the Special Interest Group on Deduction Systems (FG DedSys) of the AI Section of the German Society for Informatics (GI-FBKI). It is a meeting with a familiar, friendly atmosphere, where everyone interested in deduction can report on their work in an informal setting. [less ▲]

Detailed reference viewed: 63 (3 UL)
See detailWann kam die Grenze auf die Karte? Zur Konstruktion von Herrschaftsgebieten zwischen Reich und Frankreich in der Frühen Neuzeit
Uhrmacher, Martin UL

Scientific Conference (2019, September 19)

Feste politische Grenzen, wie man sie heute kennt, die ein Staatsgebiet nach innen wie nach außen umfassend begrenzen, sind im Raum zwischen Maas und Rhein ein Produkt des späten 18. Jahrhunderts. Für ... [more ▼]

Feste politische Grenzen, wie man sie heute kennt, die ein Staatsgebiet nach innen wie nach außen umfassend begrenzen, sind im Raum zwischen Maas und Rhein ein Produkt des späten 18. Jahrhunderts. Für diese Region wird nach dem Ursprung dieser festen Grenzlinien gesucht, die heute ein selbstverständlicher Bestandteil von Karten sind. Seit dem späten 16. Jahrhundert wurden im Westen des Heiligen Römischen Reiches erstmals historische Karten publiziert und im Druck verbreitet, die unser Bild der territorialen Landschaft bis heute prägen. Ab wann aber werden solche Grenzlinien zur Darstellung territorial-räumlicher Verhältnisse verwendet? Und welche Rolle kommt ihnen bei der Konstruktion von Herrschaft im Raum zu? Diesen Fragen widmet sich der Beitrag für die Region zwischen Maas und Rhein. Sie liegt an der Schnittstelle von Germania und Romania und ist durch Einflüsse beiderseits der Sprachgrenze geprägt. [less ▲]

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See detail(Im)mobilizing languages
Kalocsanyiova, Erika UL

Scientific Conference (2019, September 19)

This presentation is concerned with the impact of multilingualism on forced migrants’ trajectories. It reports the findings of a two-year qualitative research project, which used ethnographic research ... [more ▼]

This presentation is concerned with the impact of multilingualism on forced migrants’ trajectories. It reports the findings of a two-year qualitative research project, which used ethnographic research methods, including narrative and go-along interviews, classroom and participant observations and linguistic analysis of interactional data. The project set out to investigate how forced migrants reflect, position, and affirm themselves – through languages – in multilingual societies. Our contribution aligns itself with the body of research that challenges hegemonic monolingual and monocultural practices (Grzymala-Kazlowska/Phillimore 2018, Van Avermaet 2009). Other major influences were Juffermans and Tavares’s (2017) research on south-north trajectories and linguistic repertoires, Stevenson’s (2014, 2017) work on language (hi)stories and Busch’s (2017) biographical explorations of Spracherleben. In this talk, the focus will be on the experiences of three men from Syria and Iraq who have obtained humanitarian protection in Luxembourg, but aspire to fulfil their integration aspirations across multiple locations and countries. A careful analysis of divergent trajectories sheds light on how experiences of linguistic inequality and/or success are imprinted on forced migrants’ repertoires and shape their understanding of (successful) integration. [less ▲]

Detailed reference viewed: 65 (2 UL)
See detailSize-dependent spatial magnetization profile of Manganese-Zinc ferrite nanoparticles
Bersweiler, Mathias UL

Scientific Conference (2019, September 18)

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See detailFördern reflexionsbasierter Schulpraktika, die Professionalisierung von Studierenden für den Umgang mit Heterogenität
Weber, Jean-Marie UL; Rauh, Bernhard; Datler, Margit

Scientific Conference (2019, September 18)

Detailed reference viewed: 39 (0 UL)
See detailThe real problem with Rawlsian reasonableness
Burks, Deven UL

Scientific Conference (2019, September 17)

In The Law of Peoples, Rawls states that, if “political liberalism offers no way of proving that this specification [of reasonableness] is itself reasonable”, this is no great loss, for “it is simply ... [more ▼]

In The Law of Peoples, Rawls states that, if “political liberalism offers no way of proving that this specification [of reasonableness] is itself reasonable”, this is no great loss, for “it is simply politically reasonable to offer fair terms of cooperation to other free and equal citizens, and it is simply politically unreasonable to refuse to do so” (Rawls 1999: 87-8). While Rawls is undoubtedly right that public reason liberalism analytically requires some standard of reasonableness, it is less obvious this standard must take Rawls’s preferred form. Yet criticisms of Rawlsian “reasonableness” as “loaded” (Stout 2004: 184), “chimerical” (Young 2005: 308) or “entirely circular” (Mulhall and Swift 2003: 483) often equivocate on the meaning of reasonableness and so fall afoul of the “equivocation defense” (Freeman 2004: 2063-5). In this paper, I improve on those earlier criticisms by means of a narrow, immanent criticism whereon the two basic aspects of reasonableness – (A1) proposing and abiding by fair terms of cooperation and (A2) recognizing the “burdens of judgment” (Rawls 1996: 54-8) – may plausibly conflict: in some instances, accepting (A2) may give persons reason to disagree over the need to accept (A1). To show this, I first restate two aspects of reasonableness as a biconditional: a person is reasonable iff (A1) and (A2) obtain. I then examine whether Rawls’s burdens give reason to doubt the requirement in (A1). Insofar as the third, fourth and fifth burdens give reason to doubt just this requirement, I conclude that Rawlsian reasonableness should be reformulated. This reformulation preserves what Rawls gets right about reasonableness – namely, the burdens – but replaces the old standard with “reasonableness pluralism”, from which it follows that public reason cannot represent all the necessary conditions of political justification under circumstances of reasonable pluralism. [less ▲]

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See detailLe blanchiment: évolution du cadre européen et nouvelles formes numériques
Allegrezza, Silvia UL

Scientific Conference (2019, September 17)

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See detailMale vs female gamers: Testing the stereotype threat effect in video gaming
Holl, Elisabeth UL; Wagener, Gary Lee; Melzer, André UL

Scientific Conference (2019, September 17)

Stereotype threat (ST), defined as the risk of confirming a negative stereotype about one’s own group, has been demonstrated in various social contexts. Regarding video games, for example, informing ... [more ▼]

Stereotype threat (ST), defined as the risk of confirming a negative stereotype about one’s own group, has been demonstrated in various social contexts. Regarding video games, for example, informing female participants that men would outperform women in gaming leads to gender differences in performance. To date, however, these studies have not looked into the mechanisms of this ST effect in gaming. In two lab studies (N=186), some participants were confronted with ST-related information before playing a video game. In Study 1, half of the participants read a bogus article confirming the “standard” gender stereotype (“men outperform women”). In Study 2, a reverse stereotype was presented to half of the participants (“women have outpaced men in some game genres”). In contrast to hypotheses, both studies failed to show the expected significant interaction effect of gender and ST condition on performance, although female participants confronted with the “standard” gender stereotype reported greater frustration in Study 1, for example. In sum, results indicate a complex relationship between gender, social identity, experience with the game genre, and behavior. Identifying oneself as a gamer and being experienced in a particular game genre were found to be better performance predictors than reading stereotype threatening information. [less ▲]

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See detailA Formal Framework for Structured N-Back Stimuli Sequences
Ansarinia, Morteza UL; Mussack, Dominic UL; Schrater, Paul et al

Scientific Conference (2019, September 15)

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See detailBringing Digital Oral History to Luxembourg
Lambert, Douglas UL

Scientific Conference (2019, September 13)

Oral history is a field with a growing digital component and, as with other DH fields, computer-based techniques and systems have revolutionized the way we process and present content. One particular set ... [more ▼]

Oral history is a field with a growing digital component and, as with other DH fields, computer-based techniques and systems have revolutionized the way we process and present content. One particular set of activities, which I refer to as Oral History Digital Indexing (OHDI), has been important in shaping new processes and methods for organization, analysis, and curation of digital oral history. I have been directly involved with this work in the United States and am currently working in Luxembourg to explore what aspects of OHDI will be appropriate in Europe. In this presentation I will introduce the organizations, projects, and tools that have helped shape OHDI. Among these projects/products is the Oral History Metadata Synchronizer, or OHMS, which has two important modes of digital indexing for oral histories. One is a transcript synchronization tool and the second an indexing tool, both of which help create multimedia webpages that connect interviews in an audio/video media player with text representations of the content. OHMS and other tools will be highlighted briefly, while emphasizing that no two systems have exactly the same features. One unifying principle behind OHDI tools is that indexing processes, i.e., creating shorter, summarizing text tied to time points in the a/v media, can and should take priority over word-for-word transcription. The indexing concept leads to multiple options for processing, analyzing, and presenting an oral history and OHDI also provides a framework for operating under the inevitable reality that not all digital processing options are feasible to pursue. [less ▲]

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See detailSocial stratification in higher education trajectories: A sequence-analytical approach
Haas, Christina UL

Scientific Conference (2019, September 13)

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See detailDifferences in physical activity among children with physically active and inactive parents
Eckelt, Melanie UL; Hutmacher, Djenna UL; Steffgen, Georges UL et al

Scientific Conference (2019, September 13)

Objectives: Parental physical activity is considered as positively related to children´s physical activity (PA; Sallis, Prochaska & Taylor, 2000). Since parents serve as role models, have the potential to ... [more ▼]

Objectives: Parental physical activity is considered as positively related to children´s physical activity (PA; Sallis, Prochaska & Taylor, 2000). Since parents serve as role models, have the potential to influence the health-related behavior and, for instance, to alter a mainly sedentary lifestyle of their children (Beets, Cardinal & Alderman, 2010), the impact of parental PA has become a key issue in research. Many studies report associations between parental PA and the PA behavior of their children, e.g., the direct involvement of the parents in activities with their children is related to increased levels of their PA (Adkins, Sherwood, Story, & Davis, 2004; Beets, Vogel, Chapman, Pitetti, & Cardinal, 2007). However, the mechanisms of parental influence are still poorly understood and besides recent studies are based on self-reported data. Therefore, this study aims to examine if parental PA is related to the subjectively and objectively measured PA of their children. Methods: 237 Luxembourgish children and adolescents (134 girls and 103 boys) aged from 10-18 years participated in the study. Via a digital questionnaire, the children indicated if their mother and father are physically active on a regular basis and if they are active together with their parents. Furthermore, the children and adolescents indicated if they are active at least 60 minutes/ day and if they own a membership in a sports club (MoMo physical activity questionnaire). Additionally, children’s PA behavior was objectively assessed by wearing an accelerometer (ActiGraph GT3X-BT) for a period of seven consecutive days. Activity was categorized as sedentary, light physical activity or moderate to vigorous physical activity (MVPA) using age-specific thresholds. Results: A multivariate ANOVA revealed significant differences in self-reported physical activity if the mother was physically active (F (2, 166) = 5.4, p < .01). Thus, children reported subjectively higher daily activity duration (p < .05) and more activities in a regular week (p < .01). There was no impact on self-reported PA if the father was active or the children were active with their parents together. Regarding the objective data, there were no significant differences between children with active parents and children with inactive parents. If the parents were active with their children together there were significant differences (F (3, 229) = 3.2, p < .05), thus MVPA per day was higher (p < .05) and the sedentary time was lower (p < .01). Neither subjective nor objective data revealed gender-specific differences. Discussion: In contrast to other studies, only the mother seems to have an influence on the subjective PA behavior of the children. The fact, that parents being active or in a sports club does not appear to enhance the PA of the children objectively. However, the objective PA is merely affected by being active together. According to this finding, joint activities of parents and children seem to be necessary to promote children’s PA effectively. It is important to note that in our study the parental PA was rated by the children. In future studies, parents should be included via self-report questionnaires and/or accelerometer. [less ▲]

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See detailAdaptive equation-free multiscale modeling of metallic lattices with geometrical nonlinearity and variability
Chen, Li UL; Berke, Peter; Beex, Lars UL et al

Scientific Conference (2019, September 12)

An equation-free concurrent multiscale framework is proposed to model 3D metallic lattice structures. The proposed equation-free multiscale method (EFMM) is effectively a generalization of the ... [more ▼]

An equation-free concurrent multiscale framework is proposed to model 3D metallic lattice structures. The proposed equation-free multiscale method (EFMM) is effectively a generalization of the quasicontinuum method [2] and relies on the use of fully-resolved domains (FRD) in which all details of the lattice micro-structure are captured, and of coarse-grained domains (CGD) in which a model reduction is performed by interpolation and summation steps. The particularity of the lattice geometrical description is that cross section variations along the lattice struts (caused by the manufacturing process) are explicitly represented by their discretization in several beam finite elements, both in the FRDs and CGDs. The interpolation step of the EFMM refers to a kinematic approximation of the lattice deformation within CGDs based on the displacement of a reduced number of material points. One of the originalities of this work is the consideration of a separate interpolation of each type of kinematic variables within the CGDs, as a function of the connectivity of the lattice beam nodes (i.e. taking the location of different cross sections into account) and their kinematical pattern. This, together with accounting for geometric nonlinearity, by the development and implementation of a 3D co-rotational beam finite element [1], are innovative contributions. Choosing the appropriate sizes of the FRDs and the CGDs for a lattice to be simulated is a trade-off because larger FRDs prevail the accuracy but compromise the efficiency while larger CGDs do the opposite. Since the required sizes of the FRDs and CGDs are generally not known a priori for specific applications, an adaptive coarse-graining strategy is developed. To be specific, the whole lattice is initially considered as a CGD. Two kinds of error indicator are proposed (e.g. the Zienkiewicz-Zhu error indicator [4, 3] and the error indicator based on the discrepancy of strain energy). The error indicator guides on: 1) introducing more material points and rearranging the interpolation for the CGDs; 2) changing the localization-prone parts of the lattice into FRDs. The adaptive EFMM is applied to metallic BCC lattices with various sizes and loading conditions. By comparing to the results of those of the direct numerical simulation (DNS), it is shown that geometrical non-linearities can be captured at a fraction of the DNS cost. [less ▲]

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See detailDigital History as Trading Zone? Reflections from a Doctoral Training Unit
van der Heijden, Tim UL

Scientific Conference (2019, September 12)

This paper addresses the question how Digital History “trading zones” are being constituted in practice and how they are situated in physical working environments. The analysis is based on a case study of ... [more ▼]

This paper addresses the question how Digital History “trading zones” are being constituted in practice and how they are situated in physical working environments. The analysis is based on a case study of the Doctoral Training Unit (DTU) “Digital History and Hermeneutics”, an interdisciplinary research and training programme that was established at the Luxembourg Centre for Contemporary and Digital History (C²DH) of the University of Luxembourg. The DTU is designed as an interdisciplinary “trading zone”, in which thirteen doctoral candidates with different disciplinary backgrounds – from history, linguistics and philosophy to computer and information science – reflect on the epistemological and methodological challenges of doing digital history and humanities research (Fickers 2015, 2012). The paper reflects on the project’s first year, in which the doctoral researchers were introduced to various skills and methods in digital humanities as part of the so-called “DH incubation phase”. This phase included trainings in text mining, digital source criticism, database structures, data visualization, GIS analysis, tool criticism and algorithmic critique. The paper presents some of the main practical and epistemological opportunities and challenges of “thinkering”: the playful experimentation with digital tools and technologies for doing historical research. It furthermore reflects on the practical and institutional challenges of constituting an interdisciplinary trading zone, like the DTU. As such, it addresses a number of critical questions: How to build bridges between different knowledge domains in a specific research environment? How to stimulate interdisciplinary collaboration and to get scholars out of their disciplinary or methodological comfort zones? What is at stake in such interdisciplinary trading zones? Who are the traders – and what is being traded? The analysis is informed by studies on interdisciplinarity (Klein 2015, Deegan and McCarty 2012, Stehr and Weingart 2000), trading zones (Collins et al. 2007, Galison 1996, Kemman 2019) and communities of practice (Wenger 1998). Empirically, it draws on a series of semi-structured interviews and thirty-nine self-reflexive training reports, in which the doctoral researchers of the DTU discuss their experiences of doing digital history and hermeneutics in an interdisciplinary setting. Finally, the paper evaluates the suitability of the trading zone concept as analytical framework for studying interdisciplinary collaborations in Digital History as a field. [less ▲]

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See detailIncome Inequality and the Strength of the Origins-Health Gradient in 20 European Countries
Chauvel, Louis UL; Bar-Haim, Eyal UL; Leist, Anja UL

Scientific Conference (2019, September 12)

Health is determined by socio-economic position not only of the individual, but also by that of their parents. The intergenerational transmission of health via parental socioeconomic status is suggested ... [more ▼]

Health is determined by socio-economic position not only of the individual, but also by that of their parents. The intergenerational transmission of health via parental socioeconomic status is suggested to vary according to contextual factors such as income inequality. Earlier studies with a comparative perspective had a limited number of countries available. This study uses 20 countries at up to five waves from the European Social Survey (2008-2016) and SWIID in order to examine the extent to which income inequality is related to the origins-health gradient. The higher the income inequality of a given country and year, the stronger the origins-health gradient. Contrary to earlier findings, this association can be fully explained by intergenerational transmission of status, i.e. education. Implications of this finding are that health is largely determined by educational attainment and associated health behaviors, giving societal context a less prominent role than earlier studies suggested. [less ▲]

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See detailA comparison between conventional Earth Observation Satellites and CubeSats; Requirements, Capabilities and Data Quality
Backes, Dietmar UL; Hassani, Saif Alislam UL; Teferle, Felix Norman UL et al

Scientific Conference (2019, September 11)

From its early beginning as an educational tool in 1999, cubesats have evolved into a popular platform for technology demonstrations and scientific instruments. Ideas and innovations sparked from an ... [more ▼]

From its early beginning as an educational tool in 1999, cubesats have evolved into a popular platform for technology demonstrations and scientific instruments. Ideas and innovations sparked from an enthusiastic community led to the development of new Earth Observation (EO) technology concepts based on large constellations of satellites with high-resolution optical imagers previously considered as infeasible. Probably the most significant constellation today is deployed by Planet who are currently operating a fleet larger than 120 3U Dove satellites, which provide an imaging service with up to 3m Ground Sample Distance (GSD). The number of low-cost EO Cubesat systems is constantly increasing. However, for a number of reasons there still seems to be a reluctance to use such data for many EO applications. A better understanding of the capabilities of the current generation of small Cubesats compared to the traditional well-established bigger operational missions of high and medium resolution EO satellites is required. What are the critical capabilities and quality indicators? Due to the limited size and weight of Cubesats, critical system components, e.g. for navigation and communication, always compete with operational payloads such as optical camera/sensor systems. A functional EO system requires balanced payload, which provides adequate navigational capabilities, that match the requirements of the optical imagers (camera) deployed with the system. This study reviews the current performance and capabilities of Cubesats for optical EO and compares them to the capabilities of conventional, dedicated high and medium resolution EO systems. We summarise key performance parameters and quality indicators to evaluate the difference between the systems. An empirical study compares recent very high-resolution (VHR) imagery from big EO satellite missions with available images from Cubesats for the use case in disaster monitoring. Small and agile Nanosatellites or Cubesats already show remarkable performance. Although it is not expected that their performance and capability will match those of current bigger EO satellite missions, they are expected to provide a valuable tool for EO and remote sensing, in particular for downstream industry applications. [less ▲]

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See detailImplicit attitudes and stereotypes concerning male and female ethnic minority students
Pit-Ten Cate, Ineke UL; Krischler, Mireille UL

Scientific Conference (2019, September 10)

Stereotypes and attitudes influence behavior and hence contribute to the integration of students from different backgrounds. Stereotypes reflect beliefs about the members of social groups (Fiske & Taylor ... [more ▼]

Stereotypes and attitudes influence behavior and hence contribute to the integration of students from different backgrounds. Stereotypes reflect beliefs about the members of social groups (Fiske & Taylor, 1991) and are associated with expectations, which in turn effect perception and judgments (Ferguson, 2003). Person perceptions- and judgments are however also affected by evaluations of objects (Sanbonmatsu & Fazio, 1990). Based on people´s stereotypical beliefs and associated thoughts and feelings, specific behavioral intentions develop and hence both may be pivotal for the level of acceptance or rejection of others. Research shows that stigmatization based on ethnicity can provide a barrier in terms of both social integration (MENJE, 2015) and educational equity (Gabel, et al., 2009). The current study aimed to assess young peoples´ implicit attitudes and stereotypes concerning male and female students from different ethnic backgrounds (German vs. Turkish). Implicit attitudes were measured using an implicit association task (IAT; Greenwald, et al., 2003). First names were used as a proxy for the ethnic background of the student. Participants (N=98) were randomly divided in two groups, completing either an IAT-boys version or an IAT-girls version. Stereotypes, in terms of students´ academic engagement were assessed using a questionnaire (Hachfeld, et al., 2012). Mean IAT-D scores for boys and girls did not differ, t(89)=1.05, p=.30. The IAT-D score for the whole sample (M=0.33, SD=1.28) was significantly different from zero, t(90)=2.46, p=.02, d=0.26, reflecting more negative implicit attitudes toward students with Turkish roots. Participants did not express differential stereotypical beliefs regarding the students´ academic engagement based on students´ ethnic background (i.e., subscale scores were significantly lower than the mean of the scale, t(88)=6.00, p<.001, d=0.64). No correlation was found between implicit attitudes and stereotypical beliefs (r=.12, n.s.). People´s implicit attitudes in favor of students from ethnic majorities may result in differential social interactions with students from different backgrounds (less acceptance of students with ethnic minority backgrounds). The dissociation between implicit attitudes and explicit stereotypical beliefs may reflect the social sensitivity of the relationship between students´ background and educational opportunities. [less ▲]

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See detailOptimal Operation of Nearly Zero Energy Buildings using Mixed Integer Linear Programming
Rafii-Tabrizi, Sasan UL; Hadji-Minaglou, Jean-Régis UL; Scholzen, Frank UL et al

Scientific Conference (2019, September 10)

This paper proposes a deterministic mixed integer linear programming model for the optimal operation of an energy system providing thermal and electrical energy for a residential and commercial nearly ... [more ▼]

This paper proposes a deterministic mixed integer linear programming model for the optimal operation of an energy system providing thermal and electrical energy for a residential and commercial nearly zero energy building. The space heating and space cooling demand of the buildings is simulated using a resistive-capacitive model within a quadratic program respectively. Thermal energy for space heating, space cooling and domestic hot water is buffered in thermal energy storage systems. A dual source heat pump provides thermal energy for space heating and domestic hot water, whereas space cooling is covered by an underground ice storage. The environmental energy sources of the heat pump are ice storage or wind infrared sensitive collectors. The collectors are further used to regenerate the ice storage. Further space heating demands are covered by a combined heat and power unit, which also produces electricity. Photovoltaic panels produce electrical energy which can be stored in a battery storage system. The electrical energy system is capable of selling and buying electricity from the public power grid. A mixed integer linear programming model is developed to minimise the operation cost of the combined commercial and residential nearly zero energy building over a scheduling horizon of 24h. The developed model is tested on two typical days, which are representative for the summer and winter season. Furthermore, it is investigated how external incentives such as varying electricity prices impact the optimal scheduling of the energy system. [less ▲]

Detailed reference viewed: 78 (12 UL)
See detailSome naturally defined star products for Kaehler manifolds
Schlichenmaier, Martin UL

Scientific Conference (2019, September 10)

Detailed reference viewed: 52 (1 UL)
See detailMoment maps and Fedosov star products
La Fuente-Gravy, Laurent UL

Scientific Conference (2019, September 10)

Detailed reference viewed: 80 (0 UL)
See detailExamining grades, achievement test scores, and three intelligence facets within an extended I/E model
Hausen, Jennifer UL; Möller, Jens; Greiff, Samuel UL et al

Scientific Conference (2019, September 10)

Domain-specific academic self-concepts (ASCs) are mental representations of one’s abilities that are specific to a particular school subject. According to the internal/external frame of reference (I/E ... [more ▼]

Domain-specific academic self-concepts (ASCs) are mental representations of one’s abilities that are specific to a particular school subject. According to the internal/external frame of reference (I/E) model, achievement influences the formation of ASCs via social and dimensional comparison processes: within one domain students not only compare their achievement with their peers (social comparison) but also with their own achievements in other domains (dimensional comparison). However, students’ intelligence as an indicator of achievement has been neglected within the I/E model framework. Yet, intelligence is known to be an important determinant of academic success and thus it can be assumed to influence the formation of academic self-concepts, too. Hence, this research examined the links between verbal, numerical, figural intelligence and domain-specific ASCs while controlling for grades and achievement test scores. We drew on N = 382 German students to analyze verbal, numerical, and figural intelligence, German and math achievement, domain-specific self-reported grades and ASCs in math, physics, German, and English. We performed structural equation modeling using Mplus 8 with grades, achievement scores and intelligence facets specified as manifest predictors and domain-specific ASCs as latent criteria. Positive within-domain relations indicating social comparison effects were found between math, physics, German, and English grade to their corresponding self-concept as well as from math achievement to math ASC. Dimensional comparison effects are implied by a positive cross-domain path between physics grade and math ASC and by negative cross-domain paths from math grade to German, physics, and English ASC. Further, a positive cross-domain relation was found between math achievement and physics ASC while a negative cross-domain path was found between German achievement and math ASC. With regard to the intelligence facets, positive paths were found between numerical intelligence and physics ASC as well as between verbal intelligence and English ASC. Our findings thus suggest numerical and verbal intelligence to be valid predictors of ASC formation in an extended I/E model beyond grades and test scores. Overall, the proposed I/E model permitted meaningful relations to be drawn between domain-specific achievement indicators and ASCs suggesting that these variables provide incremental validity. [less ▲]

Detailed reference viewed: 109 (10 UL)
See detailCentral place foraging and hunter-gatherer settlement patterns: how resource depletion influences population concentration
Sikk, Kaarel UL; Caruso, Geoffrey UL

Scientific Conference (2019, September 09)

Settlement patterns are one of the main products of the Stone Age archaeological research. Their emergence processes can be explained by different models of settlement and mobility choices done by past ... [more ▼]

Settlement patterns are one of the main products of the Stone Age archaeological research. Their emergence processes can be explained by different models of settlement and mobility choices done by past inhabitants. In current study we explore central place foraging (CPF) model of huntergatherers as a tool for exploring formation of settlement patterns. CFP model is used for describing mobility choices of hunter-gatherer groups. It implies the groups settle at a central location and make logistic forays to surrounding areas foraging for required resources. The central location is chosen by it’s optimal position in relation to those resources and the group is willing to leave the current base location if a better alternative arises. We introduce a spatially explicit Agent-Based Model (ABM) of the CPF and explore how heterogeneous environment influences the settlement pattern formation. The motivation to move in CFP comes from changes in the environment. An important part of the change is the depletion of existing resources by the hunter-gatherers themselves. We are using the ABM model to explore how depletion process influences the dispersal of huntergatherer groups in the environment and which conditions and strategies will result in higher concentration and clustering of the population. [less ▲]

Detailed reference viewed: 75 (2 UL)
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See detailThe potential scaling of urban heat island and nitrogen dioxide with urban population: a systematic review
Wei, Yufei UL; Caruso, Geoffrey UL; Lemoy, Rémi

Scientific Conference (2019, September 08)

Detailed reference viewed: 50 (6 UL)
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See detailHow does the relative spatial pattern of green within cities impact carbon uptake? A European scale analysis
Boura, Marlène Delphine Fabienne UL; Caruso, Geoffrey UL

Scientific Conference (2019, September 06)

Cities constitute the main source of CO2 emissions into the atmosphere. Urban areas exhibit a variety of land use profiles and carbon metabolisms. Yet it is important to assess to what extent they can ... [more ▼]

Cities constitute the main source of CO2 emissions into the atmosphere. Urban areas exhibit a variety of land use profiles and carbon metabolisms. Yet it is important to assess to what extent they can cope with their own emissions. We address this issue by examining how the internal spatial organization of cities can impact the flow of anthropogenic CO2 between their major sources - human activities - ; and their main storage infrastructures, with a focus here on urban green spaces and forests. Is it better to have a dense core with a peripheric green belt? Large green patches within the core centre? Or small and fragmented green spaces? The objective of the present work is to tests whether the internal spatial organization of urban areas - in terms of green infrastructure characteristics and land use types - matters for evaluating carbon sequestration potentials within urban areas. Or whether they can simply be considered as single objects with a quantity of carbon emissions and a carbon sink capacity derived directly from aggregated land use data. We present a spatially explicit urban carbon flow model. Using land use data, an emission inventory and sequestration potentials from the vegetation we allocate a carbon budget to each spatial unit within the urban systems. Anthropogenic CO2 emissions are accounted from different land use categories using the TNO CAMS dataset. The potential of carbon sequestration by the urban forest is set using estimates from the literature. Urban carbon flows are then simulated for all Functional Urban Areas (FUAs) of European cities using the Urban Atlas 2012 database. Most studies on carbon dioxide uptake into vegetation at city or metropolitan scales estimate carbon stocks or aggregated carbon flows, while spatially explicit urban carbon flow analyses are made on spatially limited areas - i.e. neighbourhood level. Also, the homogenous land use data and emissions inventory at the continental level allows for a comparison of the different urban areas. We then compare the aggregated budget of the areas of study – commonly done in budget approaches from micro to global scale – to the spatially explicit budget. It allows us to estimate the real contribution of the urban forest to the uptake of anthropogenic emissions within the same urban ecosystem. The analysis then investigates the level of efficiency of CO2 uptake for different typology of urban areas for different carbon profiles. The efficiency is defined as the share of local emissions captured within the urban boundaries. In the future, the model will be validated using eddy covariance empirical data. [less ▲]

Detailed reference viewed: 50 (3 UL)
See detailThe view from anywhere: A better orientation towards public justification?
Burks, Deven UL

Scientific Conference (2019, September 05)

If reasoning proceeds from perspectives, from which perspective should one reason when pursuing the ideal of public justification (acceptability (Lister 2013) or justifiability (Vallier 2018) of statutes ... [more ▼]

If reasoning proceeds from perspectives, from which perspective should one reason when pursuing the ideal of public justification (acceptability (Lister 2013) or justifiability (Vallier 2018) of statutes or policy to different perspectives)? Although recent debate focuses on the relative merits of consensus (Quong 2011) or convergence (Gaus and Vallier 2009), public justification may require both consensus and convergence, suitably understood. Accordingly, I survey two broad orientations towards public justification: the views “from nowhere” (Nagel 1986) and “from everywhere” (Muldoon 2016). I argue that neither is adequate to socio-political complexity and privilege instead the “view from anywhere”. I first take up individually the views from nowhere and from everywhere. The former consists in the individual ideal of a neutral perspective between preferences and beliefs, attained through following an impartial procedure. In political morality, Rawls’s original position and its associated standpoints are prominent examples (Rawls 1999). Yet this view underestimates the conceptual difficulties of navigating decisions from an alien perspective and avoiding prejudging what is and is not morally relevant. The latter is an epistemic-moral social orientation which aggregates individual perspectives in collective deliberation in order to evaluate proposals via evidentiary support from different perspectives (Muldoon 2016). Such support frames “economic” bargaining between persons and groups over local, fixed-term social contracts. Though both impartial and epistemically feasible, this view likewise encounters conceptual difficulties: a.) underestimating the importance of some uniformity in bargaining and the risks of epistemic bubbles and alternative facts (Frazer 2017); b.) reifying perspectives as insulated standpoints. Consequently, a distinct orientation to public justification is needed to secure impartiality and epistemic feasibility, to build disagreement into the orientation and to allow for perspectives and their transformation. The view from anywhere does so in two ways. First, it extends McMahon’s (2009) “moral nominalism” to show how perspectives inhere in a shared use-history of prescriptive terms in evaluative judgments. Because judgments constitutive of a perspective are susceptible to extension and novel use which may be challenged by others sharing those terms, perspectives may undergo considerable negotiation. Disagreeing parties may come to agree on certain matters or to see their differences. Deliberative conversions remain possible. Second, it fosters a “social picture of reasoning” (Laden 2012) whereon reasonableness consists in issuing one another invitations to alter certain elements of one’s perspective or judgment history to reach the point where each authorizes each to speak for her on some shared concern. Public reasons are not merely accessible in form and content but via their history of mutual invitation and response. The view from anywhere thus makes more sense of public justification’s perspectival character and provides a better picture of how public justification should proceed and public reasons develop in contemporary democracies by allowing that the person may start from anywhere in the justificatory landscape and, potentially, arrive at a conclusion anywhere therein. To Rawls’s reminder to heed “where we are and whence we speak” (Rawls 2005: 382), I add that one may be and speak from anywhere, with enough time, effort and good will. [less ▲]

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See detailWireless Multi-group Multicast Precoding with Selective RF Energy Harvesting
Gautam, Sumit UL; Lagunas, Eva UL; Chatzinotas, Symeon UL et al

Scientific Conference (2019, September 05)

We present a novel framework for multi-group multicast precoding in the presence of three types of wireless users which are distributed among various multicast groups. A multi-antenna transmitter conveys ... [more ▼]

We present a novel framework for multi-group multicast precoding in the presence of three types of wireless users which are distributed among various multicast groups. A multi-antenna transmitter conveys information and/or energy to the groups of corresponding receivers using more than one multicast streams. The information specific users have conventional receiver architectures to process data, energy harvesting users collect energy using the non-linear energy harvesting module and each of the joint information decoding and energy harvesting capable user is assumed to employ the separated architecture with disparate non-linear energy harvesting and conventional information decoding units. In this context, we formulate and analyze the problem of total transmit power minimization for optimal precoder design subjected to minimum signal-to-interference-and-noise ratio and harvested energy demands at the respective users under three different scenarios. This problem is solved via semi-definite relaxation and the advantages of employing separate information and energy precoders are shown over joint and per-user information and energy precoder designs. Simulation results illustrate the benefits of proposed framework under several operating conditions and parameter values. [less ▲]

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See detailThe long and winding road: analysing Science and Innovation Centres, a unique policy instrument of Science Diplomacy
Epping, Elisabeth UL

Scientific Conference (2019, September 05)

The aim of this paper is to empirically contribute to the study of science diplomacy and thereby introduce and analyse science and innovation centres (SIC) as a novel policy instrument in the science ... [more ▼]

The aim of this paper is to empirically contribute to the study of science diplomacy and thereby introduce and analyse science and innovation centres (SIC) as a novel policy instrument in the science diplomacy toolbox. SIC are distinct units or satellite institutes, established by governments abroad, operating at the nexus of higher education, research, innovation and diplomacy. Based on a comparative analysis of policy documents and interview data, insights into the development of SIC in Germany and Switzerland are generated. Furthermore, the (changing) political rationales that guide their development, and hence science diplomacy in general, are distilled. By applying a policy instrumentation lens, the research 1) uncovers the development of the two SIC over time reflecting similarities and differences, 2) shows that the political rationales for SIC are changing and exceed dominant science diplomacy notions of soft power, 3) reveals that the promotion of the concept of science diplomacy reflects a certain Zeitgeist and rather than being a novelty, existing practices are relabelled as science diplomacy. [less ▲]

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See detailEquation-free multiscale modeling of metallic lattices with geometrical and material nonlinearity and variability
Chen, Li UL; Berke, Peter; Beex, Lars UL et al

Scientific Conference (2019, September 05)

An nonlinear equation-free concurrent multiscale numerical framework, being the generalization of the quasicontinuum method [2] is proposed in this contribution to model 3D metallic lattice structures ... [more ▼]

An nonlinear equation-free concurrent multiscale numerical framework, being the generalization of the quasicontinuum method [2] is proposed in this contribution to model 3D metallic lattice structures. The proposed equation-free multiscale method (EFMM) relies on the use of fully-resolved domains (FRD) in which all of the details of the lattice micro-structure are captured, and of coarse-grained domains (CGD) in which a model reduction is performed by interpolation and summation steps. The particularity of the lattice geometry description is that cross section variations along the lattice struts (that are experimentally observed as a result of the manufacturing process) are explicitly represented by their discretization in several beam finite elements, both in the FRDs and CGDs. The interpolation step of the EFMM refers to a kinematic approximation of the lattice deformation within CGDs based on the movement of a reduced number of material points at the CGD corners. One of the originalities of this work is the consideration of a separate interpolation of each type of degrees of freedom within the CGDs, as a function of the connectivity of the lattice beam nodes (i.e. taking the location of different cross sections into account) and their kinematical pattern. This, together with accounting for plasticity, by the development and implementation of a 3D co-rotational beam finite element [1] with embedded plastic hinges [3], are unprecedented and original contributions. The EFMM is applied to metallic BCC lattices with various sizes and loading conditions. By comparing to direct numerical simulation (DNS), it is shown that both material and geometrical non-linearities can be captured at a fraction of the DNS cost (the computational time is reduced by 97.27% while introducing an error of only 3.76%). [less ▲]

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See detailLiving up to High Expectations? Effective Enforcement of the European Pillar of Social Rights
Muñoz, Susana UL

Scientific Conference (2019, September 03)

The recent multidimensional crisis has provided opportunities for renewal and innovation at various levels of EU law and policy making and enforcement. Against this backdrop, policy areas connected with ... [more ▼]

The recent multidimensional crisis has provided opportunities for renewal and innovation at various levels of EU law and policy making and enforcement. Against this backdrop, policy areas connected with the EU social dimension face both general and policy-specific challenges in the complex network of existing enforcement strategies and tools in the EU legal order. This paper aims to provide a critical analysis of the EPRS as a potential driver of change in this context. [less ▲]

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See detail„Verachtet mir die Meister nicht!“ Kulturelle Botschafter in Luxemburg. Laurent Menager und Asca Rampini
Sagrillo, Damien UL

Scientific Conference (2019, September 03)

Der kubanische Anthropologe Ferdinand Ortiz prägte im Jahr 1940 den Begriff der „transculturación“, welcher – grob zusammengefasst – den Übergangsprozess von einer Kultur zur anderen beschreibt. In den ... [more ▼]

Der kubanische Anthropologe Ferdinand Ortiz prägte im Jahr 1940 den Begriff der „transculturación“, welcher – grob zusammengefasst – den Übergangsprozess von einer Kultur zur anderen beschreibt. In den Neunzigerjahren hat der deutsche Philosoph Wolfgang Welsch die Idee wieder aufgenommen, den Begriff jedoch in Transkulturalität umbenannt. Was sich bei Welsch als eine Bereicherung anhört – die (unter dem luxemburgischen Begriff so genannte) Mixität verschiedener Kulturen –, liest sich bei Ortiz teilweise als Aufgabe bzw. Verlust. In meinem Vortrag geht es um die zwei luxemburgische Komponisten Laurent Menager (1835-1902) und Asca Rampini (1931-1999). Auf den ersten Blick haben beide nicht viel gemeinsam, doch hinsichtlich des oben angesprochenen Diskurses zwischen Transkulturalität und Verlust wird ein Ineinandergreifen erkennbar, das beispielhaft für andere (Blasmusik-)Komponisten regionaler Reputation sein könnte: das In-die-Vergessenheit-fallen ihrer jeweiligen Lebensleistungen, die viel mit Integration und gegenseitigen kulturellen Beeinflussungen zu tun haben. Der Fingerzeig Wagners, die Meister nicht zu vergessen, mag teilweise Abhilfe schaffen. [less ▲]

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See detailDemand-Side-Management Potentials for Heat-Pumps in Residential Buildings
Bechtel, Steffen UL; Rafii-Tabrizi, Sasan UL; Scholzen, Frank UL et al

Scientific Conference (2019, September 02)

The rollout of volatile renewable energies, within the European Union creates a need for flexibility, which in turn can be solved with Demand-Side-Management. Heat pumps in single-family houses can ... [more ▼]

The rollout of volatile renewable energies, within the European Union creates a need for flexibility, which in turn can be solved with Demand-Side-Management. Heat pumps in single-family houses can contribute by adapting their consumption towards price signals, boosting the integration of renewable energies at the same time. Studies so far only focus on Nearly-Zero-Energy-Buildings neglecting the potential of buildings with lower energy standard. This paper illustrates the load shifting potential of two reference-building types by the means of thermal simulation. Therefore, a designed control unit adapts the operation times of the heat pump according to spot market price signals while simultaneously sustaining indoor comfort. The results show remarkable cost reductions achieved by load shifting for both cases. In addition, the approach of this study facilitates the projection of Demand-Side-Management potentials of whole regions. [less ▲]

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See detailSymposium: INTERGENERATIONAL VALUE TRANSMISSION: THE ROLE OF MOTIVES, TRANSITIONS, AND CONTEXT
Albert, Isabelle UL

Scientific Conference (2019, September 01)

Cultural transmission refers to the transfer of knowledge, practices, values and norms through processes of socialization, enculturation and acculturation which can be intentional or implicit ... [more ▼]

Cultural transmission refers to the transfer of knowledge, practices, values and norms through processes of socialization, enculturation and acculturation which can be intentional or implicit. Intergenerational transmission occurs to a large extent within the family as primary socialization agent. Apart from that, values and norms are learnt in contact with peers and friends, in school or through media. Although the last years have seen an increased research interest in these topics, mechanisms are still unclear and open questions remain with regard to moderators of transmission. The present symposium brings together researchers from three different countries – Germany, Italy and Luxembourg – who will focus on factors that might have an impact on intergenerational value transmission at different points in the family life cycle and outside the family. First, Daniela Barni and colleagues examine the impact of relationship quality toward mothers and fathers on adolescents’ motives for internalization of moral values, thereby taking age of adolescents into account. Christian Hoellger and colleagues then focus on later points in the family life cycle. Taking into account specific life course transitions, they find differences in value transmission, which are however moderated by adult children’s gender. Third, Isabelle Albert and colleagues concentrate on intergenerational transmission of values in the context of acculturation, taking into account parental motivation to transmit values in a sample of Portuguese immigrant compared to non-immigrant families with adult children. Finally, Elke Murdock and Maria Stogianni analyze the roles of friendship patterns for the development of ethnic identity of adolescents who live in a culturally highly diverse setting, underlining the importance of experiences in individuals’ biographies in specific contexts that shape their further development. The discussion will focus on the importance of motives to transmit or take over values, context variables and transitions for intergenerational transmission of values within and outside the family. [less ▲]

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See detailINTERGENERATIONAL VALUE TRANSMISSION AND THE ROLE OF MOTIVATIONAL PROCESSES IN MIGRANT AND NON-MIGRANT FAMILIES
Albert, Isabelle UL; Barros, Stephanie; Coimbra, Susana

Scientific Conference (2019, September 01)

The intergenerational transmission of values from one generation to the next is essential for the continuity of a society as it facilitates communication between members of different generations and ... [more ▼]

The intergenerational transmission of values from one generation to the next is essential for the continuity of a society as it facilitates communication between members of different generations and within families, where shared values constitute a part of the family identity. In the context of acculturation, traditions can provide a secure base for migrants who have to adapt to a new living context. On the one hand, parents in migrant families might find it particularly important to transmit traditional values to the next generation, on the other hand offspring can be confronted with diverse value orientations in the receiving culture, and therefore special efforts might be needed to transmit traditional values. The current study is part of the larger FNR-funded IRMA project and presents a crosscultural comparison of n = 154 triads of parents and their (young) adult children from Luxembourgish native and Portuguese immigrant families in Luxembourg, as well as a subsample of Portuguese families living in Portugal. Participants from both generations filled out a standardized questionnaire assessing general value orientations, perceived value similarity as well as parental motivation to transmit respectively children’s motivation to take over parental values. Results showed that parental motivation to transmit values was particularly high in Portuguese families (in Portugal and Luxembourg), although no differences in perceived value similarity between the three subsamples occurred. Whereas parental motivation for transmission was related to the value of tradition in all three subsamples, perceived similarity between parents and their adult children was related to their selforiented values. Concerning consensus in value profiles, the role of motivational processes will be further explored, and effects of culture and migration will be discussed in an integrative framework of intergenerational relations in light of migration and ageing. [less ▲]

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See detailMulticultural societies - and the disappearance of culture?
Murdock, Elke UL; Stogianni, Maria UL

Scientific Conference (2019, September 01)

Vertovec (2007) describes countries with a heterogeneous population in terms of origin and migration status as super-diverse. Within these plurally composed societies the boundaries between minority and ... [more ▼]

Vertovec (2007) describes countries with a heterogeneous population in terms of origin and migration status as super-diverse. Within these plurally composed societies the boundaries between minority and majority become blurred and norms, values and symbols may be negotiated dependent on context. For people growing up in such a multicultural context it is the norm to be with people of different cultural backgrounds and language skills. Reinders (2006) has introduced the term co-culturation, as distinct from enculturation and acculturation, to describe the process of engagement with cultural diversity by both, natives and those with migration background. In a sample of adolescents growing up in multicultural Luxembourg, we highlight the interplay between migration status, friendship patterns, family relations, well-being and identity. Students (N = 85) attending a Luxembourgish secondary school participated in this questionnaire study (Mage = 16.45, SD = 1.09, 46 male, 39 female). The majority (n = 68) of the students were born in Luxembourg, 17 are natives (born to two Luxembourgish parents), 43 are second generation, 17 first generation and 6 are of mixed parentage. We assessed language competence and use, friendship patterns and family relationships. Measures also included the Brief Multidimensional Students’ Life Satisfaction Scales (BMSLSS) which assesses satisfaction with life in different domains and the Multigroup Ethnic Identity Measure (MEIM) scale. The results indicate that friendship patterns are formed on the basis of the characteristics of the individual rather than based on the country of origin. Few statistically significant differences could be found in terms of country of origin/ migration status and various outcome measures. The results can be interpreted in the co-culturation framework. For this cohort of adolescents, culture contact is the norm and salience of cultural background appears to weaken as a result. However, the Luxembourgish language plays an important unifying role. [less ▲]

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See detailValue-added models: To what extent do estimates of school effectiveness depend on the selection of covariates?
Levy, Jessica UL; Brunner, Martin; Keller, Ulrich UL et al

Scientific Conference (2019, September)

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See detailWeaker neural responses to lexicality and word frequency in dyslexic adults: an EEG study with Fast Periodic Visual Stimulation.
Lochy, Aliette UL; Collette, Emilie; Schelstraete, Marie-Anne et al

Scientific Conference (2019, September)

Dyslexia, a persistent reading disorder, is characterized by different brain activation patterns when reading. Here, we used a Fast Periodic Visual Stimulation paradigm during EEG recordings to assess the ... [more ▼]

Dyslexia, a persistent reading disorder, is characterized by different brain activation patterns when reading. Here, we used a Fast Periodic Visual Stimulation paradigm during EEG recordings to assess the sensitivity of dyslexics to fine-grained psycholinguistic variations of letter strings: lexicality, lexical frequency, and orthographic regularity. Dyslexic and non-dyslexic students watched 60-seconds streams of stimuli presented at 10Hz, in which deviant items are inserted periodically (1/8, at 1.25Hz). Results show discrimination responses at 1.25Hz over left posterior occipito-temporal regions, reduced in dyslexics. Group differences were significant for discrimination of word lexicality and frequency, but not for word regularity. These results show that FPVS response amplitude distinguishes normal from pathological population. Since explicit reading is prohibited by the fast rate, results suggest differences of automatic and implicit word processing in dyslexics. The lack of group difference for regular/irregular words is interpreted post-hoc as reflecting the life-long drill of dyslexics to irregular words. [less ▲]

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See detailPrinciples for setting single line and multiline control based on network characteristics
Laskaris, Georgios UL; Cats, Oded; Jenelius, Erik et al

Scientific Conference (2019, September)

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See detailTrends in cannabis consumption among youth in Luxembourg
Catunda, Carolina UL; van Duin, Claire UL; Heinz, Andreas UL et al

Scientific Conference (2019, September)

Background: Cannabis is the most widely consumed illegal drug worldwide. Among adolescents, cannabis use is a risk factor for cognitive decline, mental illness, social problems, and the use of other ... [more ▼]

Background: Cannabis is the most widely consumed illegal drug worldwide. Among adolescents, cannabis use is a risk factor for cognitive decline, mental illness, social problems, and the use of other psychoactive drugs. The current study presents trends in cannabis consumption among adolescents in Luxembourg. Methods: The Health Behaviour in School Aged Children (HBSC) Study in Luxembourg collected data in 2006, 2010, 2014 and 2018 using a standardized paper-pencil questionnaire. In total, 23,346 secondary schools students aged 11 to 18 years old (M=15.51, SD=1.53) responded to questions on cannabis, tobacco and alcohol consumption (lifetime and the past 30 days). Findings: In general, students who never used cannabis significantly increased over the four HBSC study waves (78%, 81.2%, 81%, 84%), whereas trends are similar for boys (74.5%, 77%, 78.2%, 81.4%), but not for girls (81.5%, 85%, 83.2%, 86.3%). Cannabis use (past 30 days) significantly differ for girls (94.1%, 94.1%, 92.8%, 93.7%), but not in general (91.7%, 92%, 90.9%, 91.7%), neither for boys (89.3%, 90.1%, 88.6%, 89.6%). Discussion: Cannabis lifetime use remains high for both genders. While consumption in the last 30 days remained stable for boys, it increased for girls over the past years. Tailored preventive interventions, based on health psychological models, are essential to educate adolescents about the social-cognitive risks of cannabis use and strengthen their capacities and resilience to resist experimental drug use and social pressure. In a context where legalization policies are discussed in various European countries, e-health approaches, for example, could be widely implemented in a cost-effective manner. [less ▲]

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See detailExperience Design for Digital Cultural Heritage
Morse, Christopher UL

Scientific Conference (2019, September)

The experience of visiting museums has evolved to extend beyond the walls of the institutions themselves into digital spaces, where online galleries, exhibitions, and virtual tours invite audiences to ... [more ▼]

The experience of visiting museums has evolved to extend beyond the walls of the institutions themselves into digital spaces, where online galleries, exhibitions, and virtual tours invite audiences to explore arts and culture from their personal devices. However, generating interest from the public around these platforms remains a challenge, and the digital experience rarely compares to an in-person visit. Building on research that demonstrates the effectiveness of emotional design as a way to generate public engagement with physical museum spaces and exhibitions, this project adopts a user-centered design approach to develop novel experiences around digitized museum collections. [less ▲]

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See detailEntwicklung und Validierung eines Kurzfragebogens zur Erfassung von sieben Facetten von Gewissenhaftigkeit
Franzen, Patrick UL; Niepel, Christoph UL; Arens, A Katrin et al

Scientific Conference (2019, September)

Die Rolle von Persönlichkeitsvariablen für den Schulerfolg rückt immer stärker in den Fokus wissenschaftlicher Untersuchungen. Insbesondere Gewissenhaftigkeit zeigt eine hohe prädiktive Validität für die ... [more ▼]

Die Rolle von Persönlichkeitsvariablen für den Schulerfolg rückt immer stärker in den Fokus wissenschaftlicher Untersuchungen. Insbesondere Gewissenhaftigkeit zeigt eine hohe prädiktive Validität für die Schulleistung (Poropat, 2009). Zur näheren Untersuchung des Konstrukts der Gewissenhaft haben MacCann, Duckworth und Roberts (2009) einen aus 68 Items bestehenden Fragebogen zur Erfassung von acht verschiedenen Facetten von Gewissenhaftigkeit im Sekundarschulalter entwickelt. Dieser ist jedoch zu umfangreich für die Verwendung in large-scale Studien, die in der pädagogischen Forschung von zunehmender Bedeutung sind. Der vorliegende Beitrag präsentiert daher die Entwicklung und Validierung einer Kurzform eines Fragebogens zur Erfassung von sieben Facetten von Gewissenhaftigkeit. Die Entwicklungsstichprobe umfasste die Schüler aller neunten Klassen in Luxemburg in 2017 (N1 = 6.325). Die Schüler beantworteten deutsche oder französische Adaptionen eines aus 59 Items und sieben Facetten bestehenden Fragebogens zu Gewissenhaftigkeit, der an das Instrument von MacCann et al. angelehnt war. Zur Entwicklung einer Kurzversion wurde ein exhaustive-search Algorithmus verwendet. Dabei sollte für jede Facette von Gewissenhaftigkeit die bestmögliche Kombination aus vier Items ausgewählt werden. Die Selektionskriterien hierfür waren Fit-Statistiken, interne Konsistenz und Messinvarianz zwischen den Sprachversionen. Der resultierende Fragebogen – bestehend aus 28 Items – wurde 2018 den Schülern aller neunten Klassen in Luxemburg vorgelegt (N2 =6.279). Für diese Validierungsstichprobe zeigte ein Modell mit sieben Faktoren von Gewissenhaftigkeit einen guten Fit (CFI = 0.93, RMSEA = 0.04). Alle Facetten hatten sehr gute Reliabilitäten (ɑs > 0.97). Außerdem fanden wir skalare Messinvarianz zwischen den Sprachversionen und zwischen beiden Geschlechtern. Weitere Validierungsschritte und Anwendungsmöglichkeiten dieses Fragebogens im schulischen Kontext werden diskutiert. Literatur MacCann, C., Duckworth, A.L., & Roberts, R.D. (2009). Empirical identification of the major facets of conscientiousness. Learning and Individual Differences, 19, 451–458. Poropat, A.E. (2009). A meta-analysis of the five-factor model of personality and academic performance. Psychological Bulletin, 135, 322–338. [less ▲]

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See detailDie Stabilität von akademischen Selbstkonzept-Profilen: Befunde einer „latent transition analysis“
Franzen, Patrick UL; Arens, A Katrin; Niepel, Christoph UL

Scientific Conference (2019, September)

Nach dem „internal-external frame of reference“ Modell (Marsh, 1986), spielen u.a. dimensionale Vergleiche (Vergleich der eigenen Leistung in einem Fach mit der eigenen Leistung in einem anderen Fach ... [more ▼]

Nach dem „internal-external frame of reference“ Modell (Marsh, 1986), spielen u.a. dimensionale Vergleiche (Vergleich der eigenen Leistung in einem Fach mit der eigenen Leistung in einem anderen Fach) eine Rolle für die Ausbildung fachspezifischer akademischer Selbstkonzepte (ASKs). Dabei kommt es zu Kontrasteffekten: Eine gute Leistung in Mathematik stärkt das Mathematik-ASK, schwächt aber das Deutsch-ASK und vice versa. Schüler schätzen sich daher oft als fähiger in einem der beiden Fächer ein. Diese Typisierung ließ sich auch in personenzentrierten Ansätzen zeigen. Eine Profilanalyse von Marsh, Lüdtke, Trautwein und Morin (2009) ergab, dass ASK-Profile entweder einem Mathematik-Typ (höheres Mathe-ASK, niedrigeres Sprach-ASK), einem Sprach-Typ (niedrigeres Mathe-ASK, höheres Sprach-ASK) oder einem Mischtyp (gleich hohe ASKs in allen Domänen) folgten. Ob diese Profile über die Zeit hinweg stabil sind oder Schüler in Abhängigkeit ihrer Erfahrungen im Schulalltag zwischen den Typen wechseln können, ist bisher unklar. Ziel der vorliegenden Studie ist es, diese Frage zu beantworten. Eine Stichprobe von N = 382 Schülern aus 18 Klassen und vier Bundesländern beantwortete einen Fragebogen zum Mathematik-, Physik-, Deutsch- und Englisch-ASK an zwei Messzeitpunkten, mit einem Intervall von vier Wochen. Eine „latent transition analysis“ ergab eine Vier-State Lösung (BIC = 7797.8, Entropie = 0.884). Die vier States beschrieben einen Mathematik-Typ (höhere ASKs in Mathematik und Physik, niedrigere ASKs in Deutsch und Englisch), einen Sprach-Typ (höhere ASKs in Deutsch und Englisch, niedrigere ASKs in Mathematik und Physik), und zwei Mischtypen (gleich hohe ASKs für alle Fächer mit generell höheren ASKs bzw. niedrigeren ASKs). Die Ergebnisse zeigten eine hohe Stabilität der States: Alle Personen wurden an beiden Messzeitpunkten demselben State zugewiesen; die Transitionswahrscheinlichkeiten lagen bei 0% bis 5%. Weitere Ergebnisse zur Stabilität von ASK-Profilen bei noch kürzeren Zeitabständen, basierend auf „Experience Sampling“ Daten, werden diskutiert. Marsh, H.W. (1986). Verbal and math self-concepts: An internal/external frame of reference model. American Educational Research Journal, 23, 129-149. Marsh, H.W., Lüdtke, O., Trautwein, U., & Morin, A.J.S. (2009). Classical latent profile analysis of academic self-concept dimensions: Synergy of person- and variable-centered approaches to theoretical models of self-concept. Structural Equation Modeling, 16, 191–225. [less ▲]

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See detailDifferences between students’ and teachers’ fairness perceptions: Exploring the potential of a self-administered questionnaire to improve teachers’ assessment practices
Sonnleitner, Philipp UL; Kovacs, Carrie

Scientific Conference (2019, September)

The ability to assess learning outcomes is vital to effective teaching. Without understanding what students have learned, it is impossible to tailor information, tasks or feedback adequately to their ... [more ▼]

The ability to assess learning outcomes is vital to effective teaching. Without understanding what students have learned, it is impossible to tailor information, tasks or feedback adequately to their individual needs. Thus, so-called assessment literacy has been increasingly recognized as a core teacher competency in educational research, with many empirical studies investigating teachers’ abilities, knowledge and subjective views in relation to classroom assessment. In contrast, relatively few studies have focused on students’ perspectives of assessment. This is surprising, since gathering students’ feedback on their teachers’ assessment practices seems a logical step toward improving those practices. To help fill this gap, we present an explorative study using the recently developed Fairness Barometer as a tool to help identify specific strengths and weaknesses in individual teachers’ assessment methods. Viewing assessment through the lens of classroom justice theory, the Fairness Barometer asks students and teachers to rate aspects of procedural and informational justice in their own (teachers’) classroom assessment practices. We examined the resulting fairness discrepancy profiles for 10 Austrian secondary school classes (177 students). Results showed wide variation in profile pattern, evidence that both students and teachers can differentiate between different aspects of assessment fairness. Further exploration of the resulting discrepancy-profiles revealed certain problem types with some teachers differing from their students’ perception in almost every rated aspect, some showing specific assessment-related behaviors that require improvement (e.g. explaining grading criteria of oral exams), and others demonstrating almost identical responses as their students to the addressed fairness aspects. Results clearly indicate the potential of the Fairness Barometer to be used for teacher training and teacher self-development within the domain of teacher assessment literacy. [less ▲]

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See detailEffect of firm regulatory focus on risk disclosure: Evidence from UK strategic reports
Weber, Véronique UL

Scientific Conference (2019, August 29)

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See detailFear and Euphoria
Lehnert, Thorsten UL

Scientific Conference (2019, August 28)

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See detailPotential of the Deformation Area Difference (DAD)-Method for Condition Assessment of Bridge Structures
Waldmann, Danièle UL; Erdenebat, Dolgion UL

Scientific Conference (2019, August 27)

The construction industry ranks in the back rows in terms of digitalization. The numerous existing bridge structures require considerable effort for inspection and reliable assessment of their condition ... [more ▼]

The construction industry ranks in the back rows in terms of digitalization. The numerous existing bridge structures require considerable effort for inspection and reliable assessment of their condition. However, the state-of-the-art for inspecting these structures still relies on the visual inspection realized by bridge inspectors. The current paper summarizes several research projects in the field of condition assessment of bridge structures at the University of Luxembourg by analysing the structural response due to dynamic excitation and static loading tests. The latest development aims at using the most modern measurement techniques by combining them to a new method, the Deformation Area Difference (DAD)-Method in order to simplify and automatize at most the inspection process. The proposed DAD-Method is based on conventional static load deflection tests. It allows the localization of stiffness-reducing damage by using a very precise measurement of the deflection line and by combining this outcome to the deflection line generated by a simplified finite element model of the bridge. In order to investigate the condition of a bridge by the DAD-Method modern measurement techniques such as photogrammetry and laser scanning are used. In the framework of the conducted research, these techniques are also compared to traditional measurement systems such as total station and inductive displacement sensors as well as to digital levelling sensors. By theoretical examples and experimental tests, it can be shown that the DAD-Method is able to detect and localize damage when the damage level is dominant on the measurement noise. This paper investigates also the application of the method on a real bridge structure in Luxembourg. All of the above-mentioned measurement techniques were used, whereby the photogrammetry is applied using both, stable tripods and an autonomous flying drone. This allows examining the accuracy of the different measurement systems when applied on a real-size structure. [less ▲]

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See detailTowards an understanding of biculturalism: The dynamic tension of being bicultural
Murdock, Elke UL

Scientific Conference (2019, August 22)

One facet of contemporary societies is their increasingly diverse composition – a consequence of accelerated movement of people across the globe. There is a growing number of individuals who are living ... [more ▼]

One facet of contemporary societies is their increasingly diverse composition – a consequence of accelerated movement of people across the globe. There is a growing number of individuals who are living with more than one cultural influence. This requires new theoretical understanding of biculturalism. How do individuals with significant and prolonged second culture exposure negotiate their cultural identities? Past research has relied on additive models, which conceptualize biculturalism simply as the sum of their cultural experiences, emphasizing the relative influence of each culture. The transformative theory of biculturalism goes beyond this model by focusing on the process of negotiation (hybridization, integrating and frame switching) recognizing that this process itself is already transforming the cultural experience. I will present a theory of biculturalism as a self-stabilizing tensegrity network. Previous models fall short in understanding the process of bicultural identity construal. Building on Dialogical Self theory and the idea of tensional integrity or tensegrity (Marsico & Tateo, 2017) I will show how applying such a framework captures the everyday reality of those living in a boundary-crossing world. Human beings are involved in constant positioning and counter-positioning the forms of which go beyond simple dual systems views – a co-genetic logic being more appropriate allowing for a third way. Tension may lead to a dialectical synthesis—a concept that will be elaborated in concrete ways. Tension is viewed as a positive force, stabilizing the self and at the same time dynamic allowing for the emergence of a qualitatively new whole. [less ▲]

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See detailForging and Paving a Future: Immigrant Status and Academic Achievement in Luxembourg
Rivas, Salvador UL; Reichel, Yanica UL; Krämer, Charlotte UL et al

Scientific Conference (2019, August 21)

In the United States, much has been written about the upward or downward social mobility of the so-called, “New Second Generation”. In Europe, this topic has only recently begun to take shape; mostly in ... [more ▼]

In the United States, much has been written about the upward or downward social mobility of the so-called, “New Second Generation”. In Europe, this topic has only recently begun to take shape; mostly in regard to the Netherlands, Germany, France and the UK. In the context of Luxembourg, however, there is very little literature on this topic even though nearly 50% of its population is now of immigrant status. Though small in geography and population, Luxembourg is a founding member of the E.U. and quite literally in the heart of continental Europe. It hosts a diverse set of immigrant groups, continuously attracting economic and some political immigrants, most notably from Italy, the former Yugoslavia and Portugal. Each of these groups arriving at a specific sociohistorical moment: Italians at the height of the steel industry, former Yugoslavians fleeing war, and Portuguese to meet construction and service industry needs. Consequently, Luxembourg is truly a multilingual and multicultural country that makes for a fascinating microcosm to test and explore existing theories of immigrant integration. Its context presents a unique opportunity to study and extrapolate from to anticipate the needs of immigrants elsewhere. Using 2016 data from Luxembourg’s school monitoring programme (ÉpStan), we investigate existing and emerging differences in academic achievement among 1st, 2nd, and later generation immigrant groups in Luxembourg. We analyse math and language proficiencies (German and French) among a cohort of secondary school students (9th grade, N=6286). Preliminary results indicate clear generational differences. These are interpreted in relation to immigrant group characteristics and acculturation in Luxembourg. Implications for the new second generation in the European context will be discussed. [less ▲]

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See detailDimensional Comparison Effects on Facets of Subject-Specific Anxieties: A Nested Modelling Approach
Talic, Irma UL; Sparfeldt, Jörn; Möller, Jens et al

Scientific Conference (2019, August 16)

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See detailAssimilation and Contrast Effects of Dimensional Comparisons in Self-Concepts, Interests & Anxieties
van der Westhuizen, Lindie UL; Arens, A. Katrin; Greiff, Samuel UL et al

Scientific Conference (2019, August 16)

Research on the internal/external frame of reference (I/E) model has frequently found contrast effects of dimensional comparisons (i.e. a negative relationship between achievement and self-concept across ... [more ▼]

Research on the internal/external frame of reference (I/E) model has frequently found contrast effects of dimensional comparisons (i.e. a negative relationship between achievement and self-concept across domains) between math and verbal domains. The generalised internal/external frame of reference (GI/E) model extends the I/E model to multiple domains including multiple languages and to other academic self-beliefs and attitudes. When considering multiple languages, achievement-self-concept relations across languages have been found to be either negative (i.e. contrast effect), positive (i.e. assimilation effect), or non-significant. The present study contributes to the ongoing debate concerning the effect of dimensional comparisons among languages by (1) examining dimensional comparisons across two languages and (2) extending the examination to interest and anxiety as outcome variables beyond self-concept. We analysed domain-specific self-concepts, interest, anxieties, and achievement regarding French, German and math in a representative sample (N=5,789) of Luxembourgish ninth-graders. Findings indicated (1) clear contrast effects in the formation of self-concept and interest in German, French and math, and (2) a combination of contrast, assimilation and/or no effects in the formation of anxiety in math, German, and French. With regard to the latter, contrast effects were found for achievement-anxiety paths from German to French, French to German, and French to math. Achievement-anxiety paths from math to French and German to math were non-significant, while the path from math achievement to German anxiety showed a small, yet significant assimilation effect. Results are contextualised within the multilingual Luxembourgish educational system and implications for research on dimensional comparisons are discussed. [less ▲]

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See detailImplementing intelligence facets as predictors into the generalised I/E model
Hausen, Jennifer UL; Möller, Jens; Greiff, Samuel UL et al

Scientific Conference (2019, August 13)

The internal/external (I/E) frame of reference model postulates that achievement influences the formation of academic self-concept (ASC) via social and dimensional comparison processes. Its recent ... [more ▼]

The internal/external (I/E) frame of reference model postulates that achievement influences the formation of academic self-concept (ASC) via social and dimensional comparison processes. Its recent extension as the generalized I/E model allows further domains than math and verbal achievement. However, intelligence facets as an indicator of achievement have been neglected within the GI/E model framework. Therefore, the purpose of this research is to explore the influences of three intelligence facets (verbal, numerical, figural) on domain-specific ASCs beyond grades and achievement scores. We drew on N=382 German students to analyze verbal, numerical, and figural intelligence, German and math achievement, self-reported grades and ASCs in four domains. We performed a structural equation model using Mplus with grades, achievement scores and intelligence facets specified as predictors and domain-specific ASCs as criteria. Positive paths were found from math, physics, German and English grade to their corresponding self-concepts. A positive path was found between physics grade and math ASC while negative paths were found from English grade to math and physics ASC and from math grade to German, physics and English ASC. The path coefficients from math achievement to math ASC as well as to physics ASC were positive; German achievement was negatively related to math ASC. Lastly, numerical intelligence was positively related to physics ASC, and verbal intelligence was positively related to English ASC. Thus, intelligence, specifically numerical and verbal intelligence, seem to be valid predictors of domain-specific ACSs beyond grades and achievement test scores. [less ▲]

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See detailThe Long 19th Century of Music in Luxembourg. Music History, Sociology and Ethnology
Sagrillo, Damien UL

Scientific Conference (2019, August 09)

Music historiography is multifaceted. The historiography of music in Luxembourg is divided into various aspects. Firstly, it is part of regional music research in Europe and, as far as Luxembourg is ... [more ▼]

Music historiography is multifaceted. The historiography of music in Luxembourg is divided into various aspects. Firstly, it is part of regional music research in Europe and, as far as Luxembourg is concerned, national music research. A first point of view is music ethnology: citizens, nations have their songs and pass them on orally across national and linguistic borders and over generations. Folksongs originate from the music of the people, and patriotic music in Luxembourg is often music based on folksong styles. A further aspect of music in Luxembourg is that art music originated since the independence of the Grand Duchy in the 19th century. Sociological considerations deal with community music in Luxembourg. The starting point is a more liberal constitution, which for the first time offered citizens the right of assembly. Finally, my lecture will offer some insights of musical activities of people who left their homeland. [less ▲]

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See detailApplicability of ESM in school: Quality of students’ social interactions
Knickenberg, Margarita; Zurbriggen, Carmen UL; Hinni, Chantal et al

Scientific Conference (2019, August)

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See detailValue-added modeling in primary school: What covariates to include?
Levy, Jessica UL; Brunner, Martin; Keller, Ulrich UL et al

Scientific Conference (2019, August)

Detailed reference viewed: 139 (9 UL)
See detailBeyond mere counting: How experience sampling can help to understand social interactions
Zurbriggen, Carmen UL; Huber, Christian

Scientific Conference (2019, August)

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See detailM-QAM Modulation Symbol-Level Precoding for Power Minimization: Closed-Form Solution
Krivochiza, Jevgenij UL; Merlano Duncan, Juan Carlos UL; Chatzinotas, Symeon UL et al

Scientific Conference (2019, August)

In this paper, we derive a closed-form algorithm of the computationally efficient Symbol-Level Precoding (SLP) for power efficient communications when using M-QAM modulated waveforms. The channel state ... [more ▼]

In this paper, we derive a closed-form algorithm of the computationally efficient Symbol-Level Precoding (SLP) for power efficient communications when using M-QAM modulated waveforms. The channel state information (CSI) based and data-aided SLP technique optimizes power efficiency by solving a non-negative convex quadratic optimization problem per time frame of transmitted symbols. The optimization combines constructive inter-user interference to minimize the sum power of precoded symbols at the transmitter side under constraints for minimum SNR at the receiver side. The SLP implementation incurs extra computational complexity of the transmitter. We propose a convex quadratic optimization problem for M-QAM constellations and derive a closed-form algorithm with a fixed number of iterations to solve the problem. [less ▲]

Detailed reference viewed: 143 (21 UL)