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See detailSense of belonging, social embeddedness and perceived loneliness of older Luxembourgers and non-Luxembourgers in pandemic times
Albert, Isabelle UL; Bemtgen, Nadia; Hoffmann, Martine et al

Scientific Conference (2021, July)

Luxembourg has witnessed a sharp increase in cultural diversity due to high levels of immigration in the past years, and the question of how inhabitants from different cultural origin establish a sense of ... [more ▼]

Luxembourg has witnessed a sharp increase in cultural diversity due to high levels of immigration in the past years, and the question of how inhabitants from different cultural origin establish a sense of belonging to their country of residence has become essential for social cohesion and inclusion. The COVID-19 pandemic has, however, shaken patterns of belonging dramatically. The place of residence has gained new meaning due to confinement measures, closed borders and local contact restrictions. Physical distancing could have particularly adverse effects on older migrants with smaller social networks in the receiving country, increasing the risk for loneliness and social isolation. The present study is part of the PAN-VAL project on active ageing funded by the Luxembourgish Family Ministry. We aim to analyze the impact of sense of belonging and social embeddedness on perceived loneliness before and since the COVID-19 crisis of older Luxembourgers and non-Luxembourgers living in the Grand-Duchy. A representative sample of N=1000 residents 50+ participated in a survey via telephone and online in December 2020. The standardized questionnaire included questions regarding national and transnational family and friendship networks, contact frequencies, sense of belonging to place and country of residence and of origin as well as perceived loneliness before and since the COVID-19 pandemic. Preliminary findings indicate that sense of belonging predicted loneliness before and since the corona crisis, whereas a larger social network in Luxembourg was protective against loneliness only before but not since the crisis. Interestingly, a higher contact frequency with friends in Luxembourg reduced loneliness before the crisis, whereas higher contact frequency with friends abroad reduced loneliness since crisis. Results will be discussed considering resources as well as risk factors for loneliness in the context of migration and ageing in light of the current COVID-19 pandemic. [less ▲]

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See detailThe missing risk premium in exchange rates
Penasse, Julien UL; Magnus, Dahlquist

in Journal of Financial Economics (2021)

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See detailNB-IoT via LEO satellites: An efficient resource allocation strategy for uplink data transmission
Kodheli, Oltjon UL; Maturo, Nicola; Chatzinotas, Symeon UL et al

in IEEE Internet of Things Journal (2021)

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See detailRandom access procedure over non-terrestrial networks: From theory to practice
Kodheli, Oltjon UL; Abdalla, Abdelrahman UL; Querol, Jorge UL et al

in IEEE Access (2021)

Non-terrestrial Networks (NTNs) have become an appealing concept over the last few years and they are foreseen as a cornerstone for the next generations of mobile communication systems. Despite opening up ... [more ▼]

Non-terrestrial Networks (NTNs) have become an appealing concept over the last few years and they are foreseen as a cornerstone for the next generations of mobile communication systems. Despite opening up new market opportunities and use cases for the future, the novel impairments caused by the signal propagation over the NTN channel, compromises several procedures of the current cellular standards. One of the first and most important procedures impacted is the random access (RA) procedure, which is mainly utilized for achieving uplink synchronization among users in several standards, such as the fourth and fifth generation of mobile communication (4 & 5G) and narrowband internet of things (NB-IoT). In this work, we analyse the challenges imposed by the considerably increased delay in the communication link on the RA procedure and propose new solutions to overcome those challenges. A trade-off analysis of various solutions is provided taking into account also the already existing ones in the literature. In order to broaden the scope of applicability, we keep the analysis general targeting 4G, 5G and NB-IoT systems since the RA procedure is quasi-identical among these technologies. Last but not least, we go one step further and validate our techniques in an experimental setup, consisting of a user and a base station implemented in open air interface (OAI), and an NTN channel implemented in hardware that emulates the signal propagation delay. The laboratory test-bed built in this work, not only enables us to validate various solutions, but also plays a crucial role in identifying novel challenges not previously treated in the literature. Finally, an important key performance indicator (KPI) of the RA procedure over NTN is shown, which is the time that a single user requires to establish a connection with the base station. [less ▲]

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See detailInvestigating the influence of personalized musculoskeletal models on the calculated muscles and joints forces
Soliman, Ahmed Abdelsalam Mohamed UL; Kedziora, Slawomir UL; Kelm, Jens et al

Poster (2021, July)

It was the objective to analyze the influence of personalization of musculoskeletal models (MS) on muscle and contact joint forces for frequent daily movements. For normal gait cycle, we detect ... [more ▼]

It was the objective to analyze the influence of personalization of musculoskeletal models (MS) on muscle and contact joint forces for frequent daily movements. For normal gait cycle, we detect approximately 20% for some muscles attached to the pelvis, as well as for maximum hip-joint contact force. [less ▲]

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See detailDigitized-counterdiabatic quantum approximate optimization algorithm
Chandarana, P.; Hegade, N. N.; Paul, K. et al

in Physical Review Research (2021)

The quantum approximate optimization algorithm (QAOA) has proved to be an e ective classical-quantum algorithm serving multiple purposes, from solving combinatorial optimization problems to finding the ... [more ▼]

The quantum approximate optimization algorithm (QAOA) has proved to be an e ective classical-quantum algorithm serving multiple purposes, from solving combinatorial optimization problems to finding the ground state of many-body quantum systems. Since QAOA is an ansatz-dependent algorithm, there is always a need to design ansatz for better optimization. To this end, we propose a digitized version of QAOA enhanced via the use of shortcuts to adiabaticity. Specifically, we use a counterdiabatic (CD) driving term to design a better ansatz, along with the Hamiltonian and mixing terms, enhancing the global performance. We apply our digitizedcounterdiabatic QAOA to Ising models, classical optimization problems, and the P-spin model, demonstrating that it outperforms standard QAOA in all cases we study. [less ▲]

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See detailL’émergence de la nouvelle diplomatie luxembourgeoise - enjeux, stratégies, personnalités
Danescu, Elena UL; Schroeder, Corinne; Schmit, Paul et al

Presentation (2021, June 30)

Dans le contexte des nouvelles relations internationales forgées par la Seconde Guerre mondiale, le Grand-Duché de Luxembourg s’affirme comme un acteur de marque du multilatéralisme, en tant que membre ... [more ▼]

Dans le contexte des nouvelles relations internationales forgées par la Seconde Guerre mondiale, le Grand-Duché de Luxembourg s’affirme comme un acteur de marque du multilatéralisme, en tant que membre fondateur de la plupart des grandes institutions internationales - l’Organisation des Nations unies (1945), l’Organisation du traité de l’Atlantique du Nord (1949), le Conseil de l’Europe (1949),- ainsi que de l’intégration européenne, à commencer par la Communauté européenne du Charbon et de l’Acier (1951), dont les premières institutions sont accueillies à Luxembourg. L’adhésion aux systèmes d’alliances atlantique et européennes s’accompagne d’une nouvelle politique extérieure luxembourgeoise sous l’impulsion du légendaire ministre des Affaires étrangères Joseph Bech (1887-1975). Après la Libération, il porte une attention particulière à l’organisation institutionnelle du ministère des Affaires étrangères, à la professionnalisation de la diplomatie nationale et à la formation d’un corps diplomatique d’excellence, pour représenter le pays dans le monde, pour promouvoir ses valeurs et pour défendre ses intérêts à travers la coopération internationale bi- et multilatérale. [less ▲]

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See detailNew Field, Old Practices: Promises and Challenges of Public History
Cauvin, Thomas UL

in magazén | International Journal for Digital and Public Humanities (2021), 2(1), 13-44

lthough public history is becoming increasingly international, the field remains difficult to define and subject to some criticism. Based on sometimes long-established public practices, public history ... [more ▼]

lthough public history is becoming increasingly international, the field remains difficult to define and subject to some criticism. Based on sometimes long-established public practices, public history displays new approaches to audiences, collaboration and authority in history production. This article provides an overview of public history, its various definitions and historiography, and discusses some of the main criticisms of the field. Public history is compared to a tree of knowledge whose parts (roots, trunk, branches and leaves) represent the many collaborative and interconnected stages in the field. Defining public history as a systemic process (tree) demonstrates the need for collaboration between the different actors – may they be trained historians or not – and aim to focus on the role they play in the overall process. The future of international public history will involve balancing practice-based approaches with more theoretical discussions on the role of trained historians, audiences and different uses of the past. [less ▲]

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See detailLeveraging Execution Logs to Support Model Inference and Software Testing
Messaoudi, Salma UL

Doctoral thesis (2021)

Many software engineering activities process the events contained in log files. However, before performing any processing activity, it is necessary to correctly parse the entries in a log file to retrieve ... [more ▼]

Many software engineering activities process the events contained in log files. However, before performing any processing activity, it is necessary to correctly parse the entries in a log file to retrieve the actual events recorded in the log. In the case of cyber-physical systems, execution logs are highly important because such systems integrate multiple third-party components where their source code is not always available. This limits the visibility of the system behavior to what is collected in the execution logs. The increasing amount of logs produced by cyber-physical systems calls for 1) more advanced techniques for accurate log parsing, 2) scalable model inference that will enabling efficient program comprehension and, 3) cost-effective software testing to ensuring the quality of complex soft- ware systems. [less ▲]

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See detailInteractions between large molecules pose a puzzle for reference quantum mechanical methods
Yasmine S. Al-Hamdani; Péter R. Nagy; Andrea Zen et al

in Nature Communications (2021)

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See detailDiscovering Pesticides, Pharmaceuticals TPs in Luxembourg Waters using Open Cheminformatics Approaches
Krier, Jessy; Singh, Randolph R.; Kondic, Todor UL et al

Scientific Conference (2021, June 24)

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See detailChallenging the Status Quo: Citizens’ Access to Justice to Protect a Healthy Environment in Europe
Muñoz, Susana UL

Scientific Conference (2021, June 22)

The EU and its Member States must guarantee the respect of citizens’ right of access to environmental information, public participation in decision-making and access to justice in environmental matters ... [more ▼]

The EU and its Member States must guarantee the respect of citizens’ right of access to environmental information, public participation in decision-making and access to justice in environmental matters. Nevertheless, no framework for access to justice in the EU Member States exists. On 14 October 2020, the European Commission adopted a legislative proposal amending the Aarhus Regulation as part of the European Green Deal. The aim is to strengthen the EU’s system of access to justice in environmental matters, including the role of the Member States and national courts. Drawing on European and national case law and legislation, this paper provides a critical review of the current application of access to justice and the proposed amendments. It further explores legal avenues for strengthening the citizens’ access to justice within the multilevel protection of a healthy environment in Europe. [less ▲]

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See detailLuxembourg: from steel to the knowledge economy and beyond
Danescu, Elena UL; Clément, Franz; Golini, Sonia

Presentation (2021, June 22)

Despite its small size in terms of geography (2,586km2) and population (626,100 people on 1 January 2020), Luxembourg has an open, dynamic, innovative economy that is one of the most successful at ... [more ▼]

Despite its small size in terms of geography (2,586km2) and population (626,100 people on 1 January 2020), Luxembourg has an open, dynamic, innovative economy that is one of the most successful at international level – in 2019 its GDP per capita was 261% the European average and its growth rate was the third highest of the EU’s then 28 Member States – and also one of the least affected by the COVID-19 crisis. This can be explained by its sector-based structure, in which activities and services related to the financial centre, together with information and communication technologies, transport and non-market services, play a key role; by the existence of a highly qualified, multilingual, mobile (cross-border) workforce; and also by the proactive economic policy pursued by the country’s authorities throughout its history. Looking back, we can see that Luxembourg has gone through several transitions and dealt with a number of serious crises. Following on from the predominantly rural economy of the 19th century, the first half of the 20th century was characterised by an industrial economy based on the iron and steel industry and the latter part of the century by a service-based economy centred around the financial centre, ultimately leading to the emergence of an information and knowledge economy which is gradually taking shape in the 21st century. References. 1)STATEC (2021), “Luxembourg in figures, 2020”. Source: https://statistiques.public.lu/catalogue-publications/luxembourg-en-chiffres/2020/luxembourg-figures.pdf; 2). To find out more about the historical development of the Luxembourg economy, see Gérard Trausch (2012), “Les mutations économiques et sociales de la société luxembourgeoise depuis la révolution française [less ▲]

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See detailThe Educational Economics of UNESCO's First Regional Centre on Fundamental Education in the Immediate Post-War Period: An Archival Exploration
Kesteloot, Stefanie UL

Scientific Conference (2021, June 21)

The end of the Second World War marked the start of a new era, with worldwide support for a Universal Declaration of Human Rights (UDHR) in December 1948. By signing the Universal Declaration, the Member ... [more ▼]

The end of the Second World War marked the start of a new era, with worldwide support for a Universal Declaration of Human Rights (UDHR) in December 1948. By signing the Universal Declaration, the Member States of the United Nations pledged to promote a series of universal values. As part of the UN, UNESCO made a major effort to disseminate the Declaration and its content globally, at a national, regional and local level. The idea of “building peace in the minds of men and women” and encouraging equal rights was central to UNESCO’s mission. An archival exploration of the correspondence material of UNESCO’s secretariat, available at the UNESCO archives, offers an insight into the continuous struggle faced by the staff for the creation and implementation of educational initiatives on human rights. One focus of UNESCO’s work was the area of fundamental education. Early general correspondence found related to this topic reveals the continuous flow of communication between the different UNESCO departments, especially the office of the Director-General and the Departments of Mass Communication and Education. The discussions were mainly centred on the development of centres for fundamental education. The location to choose, the content and methodology to use, and the appropriate strategy to raise the funds needed for the continued implementation of regional centres of fundamental education, were just some of the issues addressed. The initial financial and ideological support from the Member States seems to have been slowly replaced by budgetary constraints and political opposition. A network of international experts on fundamental education helped promote UNESCO’s initiatives to possible funders with a view to creating twelve fundamental education centres all over the world. Their contribution was seen as vital for the implementation of the project. Despite the hard work and lobbying activities, only two of the initially planned twelve centres were established. Through this focus on fundamental education, I will argue that, despite the worldwide support for this philosophical and humanistic ideal, political and economic interests soon came to dominate the transition of this initial project to local communities, creating imbalances in relations within and between nations. Consequently, the dissemination and promotion of the UDHR was subject to a wide range of individual translations by UNESCO’s Member States. This only enlarged the difficult task for the intergovernmental organisation to mediate the development of peace in the minds of men and women. [less ▲]

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See detailPourquoi faut-il contenir la course aux armements dans l'espace
Zarkan, Laetitia UL; Azcárate Ortega, Almudena; Revill, James

Article for general public (2021)

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See detailThe gap in Covid-19 memory banks: on the use and usefulness of rapid response collections
Zumthurm, Tizian UL

Scientific Conference (2021, June 18)

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