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See detail1848 und die Folgen. Geburtsstunde der Laienmusik in Luxemburg
Sagrillo, Damien François UL

Scientific Conference (2022, September 06)

Im Jahr 1789 hat Luxemburg als selbstständiger und unabhängiger Staat noch nicht existiert. Es bedurfte des Wiener Kongresses (1815) und der belgischen Revolution (1830), um aus Luxemburg ein souveräner ... [more ▼]

Im Jahr 1789 hat Luxemburg als selbstständiger und unabhängiger Staat noch nicht existiert. Es bedurfte des Wiener Kongresses (1815) und der belgischen Revolution (1830), um aus Luxemburg ein souveräner Staat werden zu lassen. Bürgerliche Freiheiten wurden den Luxemburgern allerdings erst unter König-Großherzog Wilhelm II zugestanden. Mit dem Versammlungsrecht wurde der Bevölkerung auch das Vereinigungsrecht gewährt. Das Jahr 1848 bedeutet den Startpunkt und eine erste Wegmarke im Werden der Laienmusik im Großherzogtum. Im Jahr 1940 kam es mit der deutschen Besetzung zu einem abrupten Bruch einer Freiheit, die den Luxemburgern in fast einem Jahrhundert in Fleisch und Blut übergegangen zu sein schien. Der Neubeginn ab dem Jahr 1944 bedeutete eine weitere Wegmarke im Sinne von kultureller Betätigung in einer freiheitlichen Grundordnung. Im Diskurs um weitere Wegmarken sind keine politische, sondern eher soziale, pädagogische und technologische Umwälzungen ins Visier zu nehmen. [less ▲]

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See detailAnalysis and comparison of gait impairments in patients with Parkinson’s disease and normal pressure hydrocephalus using wearable sensors and machine learning algorithms
Magni, Stefano UL; Bremm, René Peter UL; Lecossois, Sylvie et al

Scientific Conference (2022, September 05)

Objectives. Gait impairments in patients with Parkinson’s disease (PD) and normal pressure hydrocephalus (NPH) are visually assessed by movement disorders experts for diagnoses and to decide on ... [more ▼]

Objectives. Gait impairments in patients with Parkinson’s disease (PD) and normal pressure hydrocephalus (NPH) are visually assessed by movement disorders experts for diagnoses and to decide on pharmaceutical and surgical interventions. Despite standardised tests and clinicians’ expertise, such approaches entail a considerable level of subjectivity. The recent development of wearable sensors and machine learning offers complementary approaches providing more objective, quantitative assessments of gait impairments. We aim to employ the data gathered from an inertial measurement unit synchronized with a novel foot pressure sensor embedded in the patient’s shoes to characterize gait impairments. We focus on distinguishing PD from NPH and on assessing gait impairment before and after surgical intervention. Methods. A cohort of 10 PD and 10 NPH patients was assembled and patients performed standardised walking tests. Measurements were performed employing wearable sensors comprising a three-axes gyroscope, a three-axes accelerometer and eight pressure sensors embedded in each patient’s shoe. To analyse the generated data, existing algorithms were implemented and adapted. These allow to compute gait cycle parameters such as step time and metrics characterizing the swing and stance phases. Machine learning algorithms where employed to identify major changes in gait cycle parameters between the two groups of patients, and for individual patients before and after surgical intervention as DBS implantation in PD and Shunt implantation in NPH. Results. The gait impairments of both disease groups were measured and quantified. An algorithm to extract gait cycle parameters from sensors was implemented, tested and employed on such patients. Gait cycle parameters within and between the groups of PD and NPH patients were compared, assessing what gait cycle parameters allow to distinguish between these groups. Gait cycle impairments of patients before and after surgery were compared, assessing the effect of DBS or Shunt implantation and which gait cycle parameters allow to monitor symptoms improvement. Conclusions. Wearable sensors measuring pressure, combined with gait cycle parameters extraction and machine learning algorithms, have a great potential for objective evaluation of gait impairment. In particular, they allow to characterize what differentiate such impairments between PD and NPH patients, and what allow to assess motor symptoms improvement after surgery. [less ▲]

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See detailEU acts without binding legal force producing binding legal effects at the national level: Enforcement of ESA soft law in the Czech Republic
Hubkova, Pavlina UL

E-print/Working paper (2022)

The European Supervisory Authorities (ESAs) are empowered, by their founding regulations, to adopt guidelines and recommendations “with a view to establishing consistent, efficient and effective ... [more ▼]

The European Supervisory Authorities (ESAs) are empowered, by their founding regulations, to adopt guidelines and recommendations “with a view to establishing consistent, efficient and effective supervisory practices within the ESFS, and to ensuring the common, uniform and consistent application of Union law”. These acts can be considered genuine EU soft law since they lack the binding legal force. However, they remain perfectly non-binding only at the EU level and in the relation between the ESAs and the national competent authorities (NCAs). Although the NCAs have a duty “to make every effort to comply” with such soft law, they keep a certain leeway to decide whether they eventually comply or not. Nonetheless, the situation is different in case of financial institutions under their supervision. Formally, the EU regulations attribute to them also only a duty “to make every effort to comply”. However, once the NCA decides to comply and effectively enforces the compliance from financial institutions, the latter have a very limited, or even no leeway to decide about the compliance. Within the complex regulatory system, the NCA metamorphosis from a normtaker into an effective norm-enforcer who is capable to determine what effects the ESA soft law have at the national level. This paper focuses on the life of ESA soft law in the Czech Republic. It examines the role and power of the Czech NCA (the Czech National Bank, CNB) in the light of the legislative framework and other domestic binding legal rules. It takes into consideration the real enforcement strategy and practices of the CNB to show that, in the hands of the CNB, ESA guidelines and recommendations become acts, which produce binding legal effects upon financial institutions. Based on this observation, the paper raises questions about the proper control of ESA soft law and potential remedies. [less ▲]

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See detailLes sanctions au regard du droit
Garcia Olmedo, Javier UL

Article for general public (2022)

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See detailAlternative Object Use in Adults and Children: Embodied Cognitive Bases of Creativity
Gubenko, Alla UL; Houssemand, Claude UL

in Frontiers in Psychology (2022)

Why does one need creativity? On a personal level, improvisation with available resources is needed for online coping with unforeseen environmental stimuli when existing knowledge and apparent action ... [more ▼]

Why does one need creativity? On a personal level, improvisation with available resources is needed for online coping with unforeseen environmental stimuli when existing knowledge and apparent action strategies do not work. On a cultural level, the exploitation of existing cultural means and norms for the deliberate production of novel and valuable artifacts is a basis for cultural and technological development and extension of human action possibilities across various domains. It is less clear, however, how creativity develops and how exactly one arrives at generating new action possibilities and producing multiple alternative action strategies using familiar objects. In this theoretical paper, we first consider existing accounts of the creative process in the Alternative Uses Task and then present an alternative interpretation, drawing on sociocultural views and an embodied cognition approach. We explore similarities between the psychological processes underlying the generation of new uses in the Alternative Uses Task and children’s pretend play. We discuss possible cognitive mechanisms and speculate how the generation of new action possibilities for common objects in pretend play can be related to adults’ ability to generate new action strategies associated with object use. Implications for creativity development in humans and embodied artificial agents are discussed. [less ▲]

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See detailWou d’Uelzecht (net) duerech d’Wisen zéit …
Pauly, Michel UL

in Genot, Gilles; Bruns, Änder (Eds.) Fecit. W: Callot. Die Stadtansicht Luxemburgs von Wenzel Callot aus dem Jahr 1753. La vue de la ville de Luxembourg par Wenzel Callot de 1753 (2022)

L'article détaille le rôle de la rivière Alzette pour le développement de la ville de Luxembourg du 10e au 18e siècle, en suivant le cours de l'eau sur le dessin de Wenzel Callot de 1753

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See detailDevelopment and Validation of a Short Form of the Geriatric Anxiety Scale (GAS-12) among Italian Older Adults
Picconi, Laura; Fairfield, Beth; Sergi, Maria Rita et al

in Clinical Gerontologist (2022)

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See detailLimites et enjeux du travail à distance en contexte transfrontalier
Pigeron-Piroth, Isabelle UL; Belkacem, Rachid

in Entreprises Magazine (2022), 115

Le télétravail imposé par la pandémie n’est pas sans soulever un certain nombre de questions (juridiques, sociales, fiscales notamment) liées à la présence de la frontière entre le lieu de résidence et le ... [more ▼]

Le télétravail imposé par la pandémie n’est pas sans soulever un certain nombre de questions (juridiques, sociales, fiscales notamment) liées à la présence de la frontière entre le lieu de résidence et le lieu de travail. Par ailleurs, dans un contexte tendu par les problèmes de mobilité et de congestion, une autre forme de travail à distance tend à se développer ces dernières années: les espaces de Coworking. [less ▲]

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See detailThe Impact Of Distributed Data Preprocessing On Automotive Data Streams
Tawakuli, Amal UL; Engel, Thomas UL

in 2022 IEEE 96th Vehicular Technology Conference: (VTC2022-Fall) (2022)

Vehicles have transformed into sophisticated com- puting machines that not only serve the objective of transporta- tion from point A to point B but serve other objectives including improved experience ... [more ▼]

Vehicles have transformed into sophisticated com- puting machines that not only serve the objective of transporta- tion from point A to point B but serve other objectives including improved experience, safer journey, automated and more efficient and sustainable transportation. With such sophistication comes complex applications and enormous volumes of data generated from diverse types of vehicle sensors and components. Automotive data is not sedentary but moves from the edge (the vehicle) to the cloud (e.g., infrastructure of the vehicle manufacturers, national highway agencies, insurance companies, etc.). The exponential increase in data volume and variety generated in modern vehicles far exceeds the rate of infrastructure scaling and expansion. To mitigate this challenge, the computational and storage capacities of vehicle components can be leveraged to perform in-vehicle operations on the data to either prepare and transform (prepro- cess) the data or extract information from (process) the data. This paper focuses on distributing data preprocessing to the vehicle and highlights the benefits and impact of the distribution including on the consumption of resources (e.g., energy). [less ▲]

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See detailDeontic Sentence Classification Using Tree Kernel Classifiers
Liga, Davide UL; Palmirani, Monica

in Intelligent Systems and Applications (2022, August 31)

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See detailEnhanced Communications on Satellite-Based IoT Systems to Support Maritime Transportation Services
Monzon Baeza, Victor UL; Ortiz Gomez, Flor de Guadalupe UL; Herrero Garcia, Samuel et al

in Sensors (2022), 22(17),

Maritime transport has become important due to its ability to internationally unite all continents. In turn, during the last two years, we have observed that the increase of consumer goods has resulted in ... [more ▼]

Maritime transport has become important due to its ability to internationally unite all continents. In turn, during the last two years, we have observed that the increase of consumer goods has resulted in global shipping deadlocks. In addition, the future goes through the role of ports and efficiency in maritime transport to decarbonize its impact on the environment. In order to improve the economy and people’s lives, in this work, we propose to enhance services offered in maritime logistics. To do this, a communications system is designed on the deck of ships to transmit data through a constellation of satellites using interconnected smart devices based on IoT. Among the services, we highlight the monitoring and tracking of refrigerated containers, the transmission of geolocation data from Global Positioning System (GPS), and security through the Automatic Identification System (AIS). This information will be used for a fleet of ships to make better decisions and help guarantee the status of the cargo and maritime safety on the routes. The system design, network dimensioning, and a communications protocol for decision-making will be presented. [less ▲]

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See detailWhat Makes Public History Truly International?
Cauvin, Thomas UL; Perry, Jimena; Zündorf, Irmgard et al

Presentation (2022, August 25)

Public History and history didactics are two subdisciplines of history that focus on reaching the world outside the academy. Both put an emphasis on “practising” history while at the same time grounding ... [more ▼]

Public History and history didactics are two subdisciplines of history that focus on reaching the world outside the academy. Both put an emphasis on “practising” history while at the same time grounding practice on theoretical reflection and empirical research with the ultimate goal of developing the most effective strategies of reaching diverse audiences to enhance historical knowledge and understanding. This roundtable explores what we mean by international public history and by the internationalization of history didactics, drawing on initiatives such as The Italian Public History Manifesto (2016) issued by the Italian Association of Public History (Associazione Italiana di Public History (AIPH). Our discussion will revolve around questions such as How must we re-shape history didactics and public history so that we take full account of transnational, diasporic and other identities based on class, gender, race, ethnicity, religion, sexuality, or ability? How can we enhance knowledge building globally by embracing different local experiences and perceptions? How do we address imbalances and the traditional North American and European centredness of our subdisciplines? [less ▲]

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See detailCoevaporation Stabilizes Tin-Based Perovskites in a Single Sn-Oxidation State
Singh, Ajay UL; Hieulle, Jeremy UL; Ferreira Machado, Joana Andreia UL et al

in Nano Letters (2022)

Chemically processed methylammonium tin-triiodide (CH3NH3SnI3) films include Sn in different oxidation states, leading to poor stability and low power conversion efficiency of the resulting solar cells ... [more ▼]

Chemically processed methylammonium tin-triiodide (CH3NH3SnI3) films include Sn in different oxidation states, leading to poor stability and low power conversion efficiency of the resulting solar cells (PSCs). The development of absorbers with Sn [2+] only has been identified as one of the critical steps to develop all Sn-based devices. Here, we report on coevaporation of CH3NH3I and SnI2 to obtain absorbers with Sn being only in the preferred oxidation state [+2] as confirmed by X-ray photoelectron spectroscopy. The Sn [4+]-free absorbers exhibit smooth highly crystalline surfaces and photoluminescence measurements corroborating their excellent optoelectronic properties. The films show very good stability under heat and light. Photoluminescence quantum yields up to 4 × 10^-3 translate in a quasi Fermi-level splittings exceeding 850 meV under one sun equivalent conditions showing high promise in developing lead-free, high efficiency, and stable PSCs. [less ▲]

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See detailMatching Traffic Demand in GEO Multibeam Satellites: The Joint Use of Dynamic Beamforming and Precoding Under Practical Constraints
Chaker, Haythem UL; Chougrani, Houcine UL; Alves Martins, Wallace UL et al

in IEEE Transactions on Broadcasting (2022)

To adjust for the non-uniform spatiotemporal nature of traffic patterns, next-generation high throughput satellite (HTS) systems can benefit from recent technological advancements in the space-segment in ... [more ▼]

To adjust for the non-uniform spatiotemporal nature of traffic patterns, next-generation high throughput satellite (HTS) systems can benefit from recent technological advancements in the space-segment in order to dynamically design traffic-adaptive beam layout plans (ABLPs). In this work, we propose a framework for dynamic beamforming (DBF) optimization and adaptation in dynamic environments. Given realistic traffic patterns and a limited power budget, we propose a feasible DBF operation for a geostationary multibeam HTS network. The goal is to minimize the mismatch between the traffic demand and the offered capacity under practical constraints. These constraints are dictated by the traffic-aware design requirements, the on-board antenna system limitations, and the signaling considerations in the K-band. Noting that the ABLP is agnostic about the inherent inter-beam interference (IBI), we construct an interference simulation environment using irregularly shaped beams for a large-scale multibeam HTS system. To cope with IBI, the combination of on-board DBF and on-ground precoding is considered. For precoded and non-precoded HTS configurations, the proposed design shows better traffic-matching capabilities in comparison to a regular beam layout plan. Lastly, we provide trade-off analyses between system-level key performance indicators for different realistic non-uniform traffic patterns. [less ▲]

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See detailTowards Refined Classifications Driven by SHAP Explanations
Arslan, Yusuf UL; Lebichot, Bertrand UL; Allix, Kevin UL et al

in Holzinger, Andreas; Kieseberg, Peter; Tjoa, A. Min (Eds.) et al Machine Learning and Knowledge Extraction (2022, August 11)

Machine Learning (ML) models are inherently approximate; as a result, the predictions of an ML model can be wrong. In applications where errors can jeopardize a company's reputation, human experts often ... [more ▼]

Machine Learning (ML) models are inherently approximate; as a result, the predictions of an ML model can be wrong. In applications where errors can jeopardize a company's reputation, human experts often have to manually check the alarms raised by the ML models by hand, as wrong or delayed decisions can have a significant business impact. These experts often use interpretable ML tools for the verification of predictions. However, post-prediction verification is also costly. In this paper, we hypothesize that the outputs of interpretable ML tools, such as SHAP explanations, can be exploited by machine learning techniques to improve classifier performance. By doing so, the cost of the post-prediction analysis can be reduced. To confirm our intuition, we conduct several experiments where we use SHAP explanations directly as new features. In particular, by considering nine datasets, we first compare the performance of these "SHAP features" against traditional "base features" on binary classification tasks. Then, we add a second-step classifier relying on SHAP features, with the goal of reducing false-positive and false-negative results of typical classifiers. We show that SHAP explanations used as SHAP features can help to improve classification performance, especially for false-negative reduction. [less ▲]

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See detailIntegration of external biomass reactions into existing metabolic models
Moscardo Garcia, Maria UL; Pires Pacheco, Maria Irene UL; Sauter, Thomas UL

E-print/Working paper (2022)

Currently, seven biomass objective functions have been defined in human metabolic reconstructions. The integration of published biomass reactions into alternative models can contribute to the prediction ... [more ▼]

Currently, seven biomass objective functions have been defined in human metabolic reconstructions. The integration of published biomass reactions into alternative models can contribute to the prediction power of the model. Thus, in this work, we present a workflow to integrate reactions and biomass functions originating from several genome-scale reconstructions into models other than their home models. Additionally, a benchmark to identify the biomass that confers the highest prediction accuracy in terms of gene essentiality and growth predictions is provided. [less ▲]

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See detailTowards a Framework for Human-Robot Co-creation
Gubenko, Alla UL; Houssemand, Claude UL

Poster (2022, August)

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