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See detailSELECTION OF THE LIPID ACCUMULATOR MICROTHRIX PARVICELLA IN MUNICIPAL WASTEWATER TREATMENT PLANTS FOR SUBSEQUENT BIODIESEL PRODUCTION
Uwizeye, Marie Louise UL

Doctoral thesis (2021)

The current trend of more circular use of resources have driven the new practices in wastewater treatment that propose a transition from taking wastewater as just a waste to wastewater as a source of ... [more ▼]

The current trend of more circular use of resources have driven the new practices in wastewater treatment that propose a transition from taking wastewater as just a waste to wastewater as a source of resources. Thus, lipids accumulated by the microbial biomass represent a potentially important stock of resources for biodiesel production. Within this study, a lipid accumulating bacterium Microthrix parvicella (M. parvicella), was studied using a molecular biology approach (16S rRNA gene amplicon sequencing) and GC-MS/MS to identify its occurrence and its accumulated lipids and thus, their potential use for biodiesel production. [less ▲]

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See detailLehren und Lernen auf Distanz – Impulse für digitale Unterrichtsentwicklung in Luxemburg
Baumann, Isabell Eva UL; Harion, Dominic UL

in Bildungsbericht für Luxemburg 2021 (2021)

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Peer Reviewed
See detailA SysML-based Design and Development of Stereo Vision System with Pose and Velocity Estimation for Cooperative Automated Vehicles
Kemsaram, Narsimlu UL; Das, Anweshan; Dubbelman, Gijs

Scientific Conference (2021, December 09)

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See detailLa recherche en éducation au Luxembourg à l’aune des publications scientifiques
Dusdal, Jennifer UL; Powell, Justin J W UL; Thönnessen, Luisa Charlotte UL

in Luxembourg Centre for Educational Testing; Université du Luxembourg; SCRIPT (Eds.) Rapport national sur l’éducation au Luxembourg 2021 (2021)

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See detailBildungsforschung in Luxemburg im Spiegel wissenschaftlicher Publikationen (integrale Fassung)
Dusdal, Jennifer UL; Powell, Justin J W UL; Thönnessen, Luisa Charlotte UL

in Service de la Recherche et de l’Innovation pédagogiques (SCRIPT); Luxembourg Centre for Educational Testing (LUCET) (Eds.) Rapport national sur l’éducation au Luxembourg 2021 (2021)

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See detailBildungsforschung in Luxemburg im Spiegel wissenschaftlicher Publikationen
Dusdal, Jennifer UL; Powell, Justin J W UL; Thönnessen, Luisa Charlotte UL

in Universität Luxemburg; SCRIPT; Luxembourg Centre for Educational Testing (Eds.) Nationaler Bildungsbericht Luxemburg 2021 (2021)

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See detailDual-DNN Assisted Optimization for Efficient Resource Scheduling in NOMA-Enabled Satellite Systems
Wang, Anyue UL; Lei, Lei UL; Lagunas, Eva UL et al

Scientific Conference (2021, December 08)

In this paper, we apply non-orthogonal multiple access (NOMA) in satellite systems to assist data transmission for services with latency constraints. We investigate a problem to minimize the transmission ... [more ▼]

In this paper, we apply non-orthogonal multiple access (NOMA) in satellite systems to assist data transmission for services with latency constraints. We investigate a problem to minimize the transmission time by jointly optimizing power allocation and terminal-timeslot assignment for accomplishing a transmission task in NOMA-enabled satellite systems. The problem appears non-linear/non-convex with integer variables and can be equivalently reformulated in the format of mixed-integer convex programming (MICP). Conventional iterative methods may apply but at the expenses of high computational complexity in approaching the optimum or near-optimum. We propose a combined learning and optimization scheme to tackle the problem, where the primal MICP is decomposed into two learning-suited classification tasks and a power allocation problem. In the proposed scheme, the first learning task is to predict the integer variables while the second task is to guarantee the feasibility of the solutions. Numerical results show that the proposed algorithm outperforms benchmarks in terms of average computational time, transmission time performance, and feasibility guarantee. [less ▲]

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See detailZwischen Denkmalschutz und kanonischem Recht. Die Debatte über die Umnutzung entweihter Kirchen
Pauly, Michel UL

E-print/Working paper (2021)

Beim Denkmalschutz von Kirchen wird das Mobiliar in den Kirchen, vom Gestühl bis zum liturgischen Gerät, leider nicht mitgeschützt. Ein ausführlichres Inventar und eine Vereinfachung der Rechtspraxis ... [more ▼]

Beim Denkmalschutz von Kirchen wird das Mobiliar in den Kirchen, vom Gestühl bis zum liturgischen Gerät, leider nicht mitgeschützt. Ein ausführlichres Inventar und eine Vereinfachung der Rechtspraxis drängen sich auf. [less ▲]

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See detailLuxembourg in Europe and in the world – a historical overview of the country’s socio-economic development from the 19th to the 21st century
Danescu, Elena UL; Clement, Franz

Presentation (2021, December 07)

The Winter Online Lecture Series on Europe will take place in December 2021 in connection with the courses “History of European integration (1919-1993)” (MAHEC-S1-M6i) and “Economic and social history of ... [more ▼]

The Winter Online Lecture Series on Europe will take place in December 2021 in connection with the courses “History of European integration (1919-1993)” (MAHEC-S1-M6i) and “Economic and social history of Europe after 1945” (MAHEC-S3-M5iii) from the Master in European Contemporary History, and the course “Democratic transitions in Central and Eastern Europe” (BCE-EU-301-04) from the Bachelor in European Cultures, with the aim of giving students on these programmes, as well as the wider academic community at the University of Luxembourg, the opportunity to find out about the history and workings of the European institutions in Luxembourg from new and unconventional angles and to discuss some of the milestones in contemporary European history with people who were involved in or witnessed these events. Each session (in French, with Q&A session in French and English) will be streamed via Webex and will include a presentation by a speaker, followed by a discussion with the audience and the opportunity to ask questions. [less ▲]

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See detailThe Légionnaires Rallye: An Interactive Digital Treasure Hunt
Camarda, Sandra UL

Presentation (2021, December 07)

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See detailMapping war experiences of Luxembourgish recruits during WWII
Janz, Nina UL

Presentation (2021, December 07)

The Impact and Legacy of War Experiences in Luxembourg” researches the personal side of the history of Luxembourgish youth born between 1920 and 1927 who were enrolled into German services under the Nazi ... [more ▼]

The Impact and Legacy of War Experiences in Luxembourg” researches the personal side of the history of Luxembourgish youth born between 1920 and 1927 who were enrolled into German services under the Nazi occupation of Luxembourg during World War II. The research focuses on personal testimonies and their individual war experience to uncover these men, women, and families’ individual experiences. Using a relational database to represent their war experiences, we face several challenges, such as a data structure that is too rigid and strict to “map” the fluid and unpredictable life patterns of our study subjects. We developed a data model where we treat different life stations (military unit, POW camp etc.) as equal data levels like our recruits (as persons). Each “life station” or event we treat as a “person” and create a separate “biography” to include all relevant data. Afterwards, we link the life stations or events with the actual person in the database. The aim of my talk will be the “translation” of lives, with its twists and turns into a static data set such as a relational database to map the individual war experiences of our study object. [less ▲]

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See detailA family of deep learning architectures for channel estimation and hybrid beamforming in multi-carrier mm-wave massive MIMO.
Elbir, Ahmet M.; Mishra, Kumar Vijay; Mysore Rama Rao, Bhavani Shankar UL et al

in IEEE Transactions on Cognitive Communications and Networking (2021)

Hybrid analog and digital beamforming transceivers are instrumental in addressing the challenge of expensive hardware and high training overheads in the next generation millimeter-wave (mm-Wave) massive ... [more ▼]

Hybrid analog and digital beamforming transceivers are instrumental in addressing the challenge of expensive hardware and high training overheads in the next generation millimeter-wave (mm-Wave) massive MIMO (multiple-input multiple-output) systems. However, lack of fully digital beamforming in hybrid architectures and short coherence times at mm-Wave impose additional constraints on the channel estimation. Prior works on addressing these challenges have focused largely on narrowband channels wherein optimization-based or greedy algorithms were employed to derive hybrid beamformers. In this paper, we introduce a deep learning (DL) approach for channel estimation and hybrid beamforming for frequency-selective, wideband mm-Wave systems. In particular, we consider a massive MIMO Orthogonal Frequency Division Multiplexing (MIMO-OFDM) system and propose three different DL frameworks comprising convolutional neural networks (CNNs), which accept the raw data of received signal as input and yield channel estimates and the hybrid beamformers at the output. We also introduce both offline and online prediction schemes. Numerical experiments demonstrate that, compared to the current state-of-the-art optimization and DL methods, our approach provides higher spectral efficiency, lesser computational cost and fewer number of pilot signals, and higher tolerance against the deviations in the received pilot data, corrupted channel matrix, and propagation environment. [less ▲]

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See detail"Dohannen hu se dat fierchterlecht Cattenom opgerit": Les centrales nucléaires dans l'imaginaire littéraire luxembourgeois
Thiltges, Sébastian UL

Article for general public (2021)

Depuis les dossiers brûlants de Remerschen et de Cattenom, et au rythme des accidents et catastrophes nucléaires qui secouent le monde, les centrales nucléaires font partie de l’imaginaire littéraire au ... [more ▼]

Depuis les dossiers brûlants de Remerschen et de Cattenom, et au rythme des accidents et catastrophes nucléaires qui secouent le monde, les centrales nucléaires font partie de l’imaginaire littéraire au Luxembourg ¬– et cela dans toutes les langues. [less ▲]

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See detailThird-country national victims of trafficking in human beings: Detection, identification and protection in Luxembourg
Petry, Ralph UL; Sommarribas, Adolfo UL; Nienaber, Birte UL

Report (2021)

This study provides an overview of the current procedures and practices regarding the detection, identification and protection of victims of trafficking in human beings from third-countries in Luxembourg ... [more ▼]

This study provides an overview of the current procedures and practices regarding the detection, identification and protection of victims of trafficking in human beings from third-countries in Luxembourg. Since 2016, Luxembourg saw a number of significant developments with regard to legislation, institutional and policy reforms, as well as debates and awareness campaigns related to the detection, identification, and protection of (presumed) third-country national victims of trafficking in human beings. These include, among others, several legislative developments strengthening procedural safeguards and the fight against certain forms of exploitation; the establishment of a National Action Plan on ‘Trafficking in Human Beings’ (including a confidential roadmap for relevant stakeholders in the field) and a National Action Plan on ‘Prostitution’ (which also relates to trafficking in human beings); an enhanced cooperation on the Benelux level; the creation of the Search for Fugitives and Victim Protection Unit of the Judicial Police (including reinforcement in 2021); the appointment of contact person for the fight against trafficking in human beings at the Directorate of Immigration and a ‘trafficking’ reference person in each of its departments; the reinforcement of the support for victims of trafficking (including the establishment of a common space (‘INFOTRAITE’) for the two approved assistance services SAVTEH and COTEH); an increase and broadening of the basic and specialised training for various stakeholders; and the organisation of information and awareness raising campaigns. At the same time, the national referral mechanism in Luxembourg has remained the same since its establishment: all stakeholders who detect a (presumed) third-country national victim of trafficking in human beings are obliged to refer cases to the Organised Crime Unit and the Search for Fugitives and Victim Protection Unit of the Judicial Police. Only the Judicial police can formally identify a victim of trafficking and notify the Directorate of Immigration of the Ministry of Foreign and European Affairs in view of issuing a reflection period of 90 days to the third-country national. Before the expiration of the reflection period, the Directorate of Immigration consults with the Police in order to determine whether a residence permit for victims of trafficking in human beings may be issued to the third-country national. For all the details, including challenges and good practices in the area of detecting, identifying, and protecting victims of trafficking in human beings in Luxembourg, have a look at the EMN Luxembourg Study. [less ▲]

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