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See detailMultiple Vulnerabilities: The Effects of Neighborhood Structural Changes upon Older Residents’ Mental Health and Perceptions of the Broader Community
Settels, Jason UL

in Journal of Community Psychology (2020)

Neighborhoods' structural conditions are consequential for their social circumstances and residents' well‐being. Neighborhood effects might be accentuated among older residents because their daily ... [more ▼]

Neighborhoods' structural conditions are consequential for their social circumstances and residents' well‐being. Neighborhood effects might be accentuated among older residents because their daily activities and social lives are more confined to their immediate communities. This study examines how changing neighborhood socioeconomic disadvantage affects older residents' depression and stress, as well as perceptions of neighborhood context. This study employed waves 2 (2010–2011) and 3 (2015–2016) of the National Social Life, Health, and Aging Project survey (N= 2357) and fixed‐effects linear regression models to study these relationships. While rising neighborhood socioeconomic disadvantage was associated with more depression and stress, it was negatively associated with overall neighborhood social capital and neighborhood social cohesion, and was only associated with lower perceptions of neighborhood safety among respondents who relocated to new neighborhoods. Beyond cross‐sectional associations, changing neighborhood socioeconomic disadvantage is associated with changes in mental health and perceptions of neighborhood social context. [less ▲]

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See detailEvaluating Pretrained Transformer-based Models on the Task of Fine-Grained Named Entity Recognition
Lothritz, Cedric UL; Allix, Kevin UL; Veiber, Lisa UL et al

in Proceedings of the 28th International Conference on Computational Linguistics (2020, December)

Named Entity Recognition (NER) is a fundamental Natural Language Processing (NLP) task and has remained an active research field. In recent years, transformer models and more specifically the BERT model ... [more ▼]

Named Entity Recognition (NER) is a fundamental Natural Language Processing (NLP) task and has remained an active research field. In recent years, transformer models and more specifically the BERT model developed at Google revolutionised the field of NLP. While the performance of transformer-based approaches such as BERT has been studied for NER, there has not yet been a study for the fine-grained Named Entity Recognition (FG-NER) task. In this paper, we compare three transformer-based models (BERT, RoBERTa, and XLNet) to two non-transformer-based models (CRF and BiLSTM-CNN-CRF). Furthermore, we apply each model to a multitude of distinct domains. We find that transformer-based models incrementally outperform the studied non-transformer-based models in most domains with respect to the F1 score. Furthermore, we find that the choice of domains significantly influenced the performance regardless of the respective data size or the model chosen. [less ▲]

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See detailWireless Edge Caching: Modeling, Analysis, and Optimization
Vu, Thang Xuan UL; Bastug, Ejder; Chatzinotas, Symeon UL et al

Book published by Cambridge University Press (2020)

Understand both uncoded and coded caching techniques in future wireless network design. Expert authors present new techniques that will help you to improve backhaul, load minimization, deployment cost ... [more ▼]

Understand both uncoded and coded caching techniques in future wireless network design. Expert authors present new techniques that will help you to improve backhaul, load minimization, deployment cost reduction, security, energy efficiency and the quality of the user experience. Covering topics from high-level architectures to specific requirement-oriented caching design and analysis, including big-data enabled caching, caching in cloud-assisted 5G networks, and security, this is an essential resource for academic researchers, postgraduate students and engineers working in wireless communications. [less ▲]

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See detailMichel Schmit : le parcours d'un Luxembourgeois engagé
Sauer, Arnaud UL

in Camarda, Sandra; Reinert, François; Sauer, Arnaud (Eds.) et al Légionnaires: Parcours de guerre et de migrations entre le Luxembourg et la France (2020)

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See detailImpact of Varying Radio Power Density on Wireless Communications of RF Energy Harvesting Systems
Luo, Yu; Pu, Lina; Lei, Lei UL

in IEEETransactions on Communications (2020)

Detailed reference viewed: 16 (0 UL)
See detailHenri Dieschbourg
Sauer, Arnaud UL

in Camarda, Sandra; Reinert, François; Sauer, Arnaud (Eds.) et al Légionnaires: Parcours de guerre et de migrations entre le Luxembourg et la France (2020)

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See detailNOMA-Enabled Multi-Beam Satellite Systems: Joint Optimization to Overcome Offered-Requested Data Mismatches
Wang, Anyue UL; Lei, Lei UL; Lagunas, Eva UL et al

in IEEE Transactions on Vehicle Technology (2020)

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See detailLe cadre familial et socio-professionnel des légionnaires luxembourgeois de la Première Guerre mondiale
Sauer, Arnaud UL

in Camarda, Sandra; Reinert, François; Sauer, Arnaud (Eds.) et al Légionnaires: Parcours de guerre et de migrations entre le Luxembourg et la France (2020)

Detailed reference viewed: 19 (4 UL)
See detailLes légionnaires luxembourgeois et leurs familles durant l'entre-deux-guerres. Une reconstruction difficile et un enjeu politique
Sauer, Arnaud UL

in Camarda, Sandra; Reinert, François; Sauer, Arnaud (Eds.) et al Légionnaires: Parcours de guerre et de migrations entre le Luxembourg et la France (2020)

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See detailÉcologie culturelle et cultures écologiques dans la Grande Région / Kulturökologie und ökologische Kulturen in der Großregion
Thiltges, Sébastian UL; Solte-Gresser, Christiane

Book published by Peter Lang (2020)

Menschengemachter Klimawandel, urbane und rurale Lebenswelten, lokale und globale Umweltbewegungen: Bei all diesen Themen und Debatten geht es um die Beziehungen zwischen Natur und Kultur. Angesichts der ... [more ▼]

Menschengemachter Klimawandel, urbane und rurale Lebenswelten, lokale und globale Umweltbewegungen: Bei all diesen Themen und Debatten geht es um die Beziehungen zwischen Natur und Kultur. Angesichts der Dominanz ökologischer Fragen in Wissenschaft, Wirtschaft und Politik stellt dieses Buch dezidiert kulturelle Umwelt-Diskurse in den Mittelpunkt: Wie lassen sich die rasanten, bislang kaum vorstellbaren ökologischen Veränderungen erfassen, erzählen und imaginieren? Am Beispiel des grenzüberschreitenden Raumes der europäischen Großregion (Lothringen, Luxemburg, Rheinland-Pfalz, Saarland, Wallonien) regen die Environmental Humanities mit ihrer transdisziplinären Perspektive dazu an, die vielfältigen Interaktionen zwischen Menschen und Nicht-Menschen in einem gemeinsamen ökokulturellen Raum neu zu denken. [less ▲]

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See detailPerception of immigration to Iceland: The host country perspective
Murdock, Elke UL

Report (2020)

With 35.5 immigrants per 1000 inhabitants, Iceland had the third highest number of immigrants per inhabitants in Europe in 2018. Until the turn of the century, the foreign population percentage in Iceland ... [more ▼]

With 35.5 immigrants per 1000 inhabitants, Iceland had the third highest number of immigrants per inhabitants in Europe in 2018. Until the turn of the century, the foreign population percentage in Iceland was around 2%. In the last 5 years, this percentage has risen steadily to nearly 14% in 2020. How is this rapid rise in immigration experienced by the host country population? How are immigrants perceived and what are expectations in terms of behavior? The Inclusive Societies – Iceland project investigated both, the immigrants’ situation in Iceland, but also the native populations’ attitude towards immigration and immigrants. It is important to take the host country perspective into consideration, as diversity ideologies will also determine the acculturation options for minorities. A quantitative survey was conducted among 3630 native Icelanders (51.1% women, MAge = 50.8, SD = 15.6), spread across all regions of Iceland. The questions covered a range of domains pertinent to life in Iceland. In this Chapter only the questions pertaining directly to immigration and immigrants are analyzed. The results indicate that culture contact takes place – with, over two thirds of participants indicating that they have invited immigrants to their home and slightly under two thirds having been invited to immigrants’ homes. Overall, the perception is that immigrants have made a positive impact to communities. The vast majority of participants expect immigrants to learn Icelandic. The greatest divergence of views was found concerning the question, if immigrants should adopt Icelandic customs and values. The findings will be discussed in light of policy implications. [less ▲]

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See detailScience of Science: Connecting Multidisciplinary Studies of Research, Higher Education, and Society
Dusdal, Jennifer UL; Akbaritabar, Aliakbar; Kosmützky, Anna

Book published by Frontiers (2020)

Marked by expanding and diverse forms of collaboration and competition, the investigation of contemporary developments in higher education and science systems need additional attention. Therefore, this ... [more ▼]

Marked by expanding and diverse forms of collaboration and competition, the investigation of contemporary developments in higher education and science systems need additional attention. Therefore, this research topic provides a forum for multidisciplinary exchange of pioneering research ideas and dialogues as well as complementary research that contribute to the field of knowledge, and aspires to support innovative, cutting-edge, and policy relevant research at the nexus of higher education research and science studies (HERSS), bibliometrics, scientometrics, and computational social sciences –traditionally separate communities focusing either on small scale and in-depth case studies or on large-scale “big data” research. Researchers bringing together the aforementioned scientific communities can be classified as important bridge-builders to bolster the growing research and current initiatives in the field of Science of Science between diverse scientific communities and the wider public. Especially sociology with its ambition to pair classic and innovative theoretical approaches with new methods to analyze and to qualitatively interpret quantitative “big data” with machine learning algorithms initiates a fascinating and promising approach to interlink the still separate scientific communities in favor of a more holistic understanding of Science of Science. In this Research Topic -as part of the Lecture Series: Science of Science in the Spotlight at the University of Luxembourg- we invite members of these diverse scientific communities and researchers who are working at the intersection as “translators” to present their latest research. We aim to promote and provide evidence-based insights into the drivers of multidisciplinary and international research and innovation, networks, and collaboration, including higher education developments, scientific knowledge production (e.g. publications, citations, patents), science capacity-building, research evaluation, policy reforms, cultural and societal change processes, and institutions and organizations as well as scientists’ geographical mobility, gender inequalities and career paths in science, and of migrant scientists. Furthermore, we want to stimulate debate on theoretical in-depth context knowledge and innovative methodological approaches (for example social network analysis and machine learning algorithms), and on data acquisition and analysis -long identified as an important research gap in Science of Science. The aim of this research topic is to consolidate common themes and research interests to maintain and improve collaborations among researchers with different academic backgrounds and expertise from a wide range of disciplines. We welcome contributions that address the aforementioned topics and encourage to combine theory-driven, empirically-rich, multidisciplinary, historical, and comparative research, including informed and evidence-based interpretations of research results that illustrate the importance of the topic for researchers, policymakers, funding agencies, university managers, and other public research organizations. [less ▲]

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See detailOpinion Statement ECJ-TF 2/2020 on the ECJ Decision of 3 March 2020 in Vodafone Magyarország Mobil Távközlési Zrt. (Case C-75/18) on Progressive Turnover Taxes
García Prats, Alfredo; Haslehner, Werner UL; Heydt, Volker et al

in European Taxation (2020), 60(12), 555-564

This CFE Opinion Statement discusses the decision of the Grand Chamber of the ECJ in Vodafone. The Court held that the imposition of the Hungarian progressive turnover-based tax on the telecommunications ... [more ▼]

This CFE Opinion Statement discusses the decision of the Grand Chamber of the ECJ in Vodafone. The Court held that the imposition of the Hungarian progressive turnover-based tax on the telecommunications sector did not infringe the EU fundamental freedoms or article 401 of the VAT Directive (2006/112), and that the question regarding the prohibition of State aid was inadmissible. Vodafone is especially important in respect of the current debate regarding turnover-based digital services taxes. [less ▲]

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See detailA hybrid MGA-MSGD ANN training approach for approximate solution of linear elliptic PDEs
Dehghani, Hamidreza UL; Zilian, Andreas UL

E-print/Working paper (2020)

We introduce a hybrid "Modified Genetic Algorithm-Multilevel Stochastic Gradient Descent" (MGA-MSGD) training algorithm that considerably improves accuracy and efficiency of solving 3D mechanical problems ... [more ▼]

We introduce a hybrid "Modified Genetic Algorithm-Multilevel Stochastic Gradient Descent" (MGA-MSGD) training algorithm that considerably improves accuracy and efficiency of solving 3D mechanical problems described, in strong-form, by PDEs via ANNs (Artificial Neural Networks). This presented approach allows the selection of a number of locations of interest at which the state variables are expected to fulfil the governing equations associated with a physical problem. Unlike classical PDE approximation methods such as finite differences or the finite element method, there is no need to establish and reconstruct the physical field quantity throughout the computational domain in order to predict the mechanical response at specific locations of interest. The basic idea of MGA-MSGD is the manipulation of the learnable parameters’ components responsible for the error explosion so that we can train the network with relatively larger learning rates which avoids trapping in local minima. The proposed training approach is less sensitive to the learning rate value, training points density and distribution, and the random initial parameters. The distance function to minimise is where we introduce the PDEs including any physical laws and conditions (so-called, Physics Informed ANN). The Genetic algorithm is modified to be suitable for this type of ANN in which a Coarse-level Stochastic Gradient Descent (CSGD) is exploited to make the decision of the offspring qualification. Employing the presented approach, a considerable improvement in both accuracy and efficiency, compared with standard training algorithms such classical SGD and Adam optimiser, is observed. The local displacement accuracy is studied and ensured by introducing the results of Finite Element Method (FEM) at sufficiently fine mesh as the reference displacements. A slightly more complex problem is solved ensuring the feasibility of the methodology [less ▲]

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See detailSensitivity Analysis on Regularity Based Driver Advisory Systems
Laskaris, Georgios; Seredynski, Marcin; Viti, Francesco UL

in 2020 IEEE 23rd International Conference on Intelligent Transportation Systems (ITSC) (2020, December)

Detailed reference viewed: 76 (1 UL)
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See detailA cascading Kalman filtering framework for real-time urban network flow estimation
Rinaldi, Marco UL; Viti, Francesco UL

in 2020 IEEE 23rd International Conference on Intelligent Transportation Systems (ITSC) (2020, December)

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See detailSpecial Issue: The Dissolution of the Austro-Hungarian Monarchy: Border Making and its Consequences.
Venken, Machteld UL; Bo Frandsen, Steen

in European Review of History (2020), 27(6),

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See detailThe Dissolution of the Austro-Hungarian Monarchy: Border Making and its Consequences.
Venken, Machteld UL

in European Review of History (2020), 26(6), 697-708

This special issue addresses practices of border-making and their consequences on the territory of the former Austro-Hungarian Monarchy. As the reality did not correspond to the peaceful Europe ... [more ▼]

This special issue addresses practices of border-making and their consequences on the territory of the former Austro-Hungarian Monarchy. As the reality did not correspond to the peaceful Europe articulated in the Paris Treaties, a multitude of (un)foreseen complications followed the drawing of borders and states. Articles include new case studies on the creation, centralization or peripheralization of border regions, such as Subcarpathian Rus, Vojvodina, Banat and the Carpathian Mountains, on border zones such as the Czechoslovakian harbour in Germany, and on cross-border activities. The special issue shows how disputes over national identities and ethnic minorities, as well as other factors such as the economic consequences of the new state borders, appeared on the interwar political agenda and coloured the lives of borderland inhabitants. Adopting a bottom-up approach, the contributions demonstrate the agency of borderlands and their people in the establishment, functioning, disorganization or ultimate breakdown of some of the newly created interwar nation-states. [less ▲]

Detailed reference viewed: 27 (1 UL)