Last 7 days
Bookmark and Share    
Full Text
Peer Reviewed
See detailAttentional Bias Modification Training for Itch: A Proof-of-Principle Study in Healthy Individuals
van Laarhoven, Antoinette IM; Becker, Jennifer M; van Ryckeghem, Dimitri UL et al

in Frontiers in Medicine (2021), 8

Itch draws our attention to allow imposing action against bodily harm (e.g., remove insects). At the same time, itch is found to interfere with ongoing tasks and daily life goals. Despite the key role of ... [more ▼]

Itch draws our attention to allow imposing action against bodily harm (e.g., remove insects). At the same time, itch is found to interfere with ongoing tasks and daily life goals. Despite the key role of attention in itch processing, interventions that train individuals to automatically disengage attention from itch cues are lacking. The present proof-of-principle attention bias modification (ABM) training study was aimed at investigating whether attention to itch as well as sensitivity to mild itch can be changed. Healthy volunteers were randomized over three ABM-training conditions. Training was done via a modified pictorial dot-probe task. In particular, participants were trained to look away from itch stimuli (n = 38), toward itch stimuli (n = 40) or not trained toward or away from itch at all (sham training, n = 38). The effects of the ABM-training were tested primarily on attention to itch pictures. Secondarily, it was investigated whether training effects generalized to alterations in attention to itch words and mechanical itch sensitivity. The ABM-training did not alter attention toward the itch pictures, and there was no moderation by baseline levels of attention bias for itch. Also, attention bias to the itch words and itch sensitivity were not affected by the ABM-training. This study was a first step toward trainings to change attention toward itch. Further research is warranted to optimize ABM-training methodology, for example increasing motivation of participants. Eventually, an optimized training could be used in patient populations who suffer most from distraction by their symptoms of itch. [less ▲]

Detailed reference viewed: 19 (0 UL)
Peer Reviewed
See detailThe key role that deposit guarantee schemes could and should play in bank crises: a proposal to amend the European Union framework
Bodellini, Marco UL

in The crisis management framework for banks in the EU. How can we deal with the crisis of small and medium-sized banks? (2021)

Detailed reference viewed: 36 (0 UL)
Full Text
Peer Reviewed
See detailSustainability and finance: utopian oxymoron or achievable companionship?
Bodellini, Marco UL

in Law and Economics Yearly Review (2021)

Detailed reference viewed: 35 (0 UL)
Full Text
Peer Reviewed
See detailMolecular ruler mechanism and interfacial catalysis of the integral membrane acyltransferase PatA
Anso, Itxaso; Basso, Luis G. M.; Wang, Lei et al

in Science Advances (2021), 7(42),

Glycolipids are prominent components of bacterial membranes that play critical roles not only in maintaining the structural integrity of the cell but also in modulating host-pathogen interactions. PatA is ... [more ▼]

Glycolipids are prominent components of bacterial membranes that play critical roles not only in maintaining the structural integrity of the cell but also in modulating host-pathogen interactions. PatA is an essential acyltransferase involved in the biosynthesis of phosphatidyl-myo-inositol mannosides (PIMs), key structural elements and virulence factors of Mycobacterium tuberculosis. We demonstrate by electron spin resonance spectroscopy and surface plasmon resonance that PatA is an integral membrane acyltransferase tightly anchored to anionic lipid bilayers, using a two-helix structural motif and electrostatic interactions. PatA dictates the acyl chain composition of the glycolipid by using an acyl chain selectivity “ruler.” We established this by a combination of structural biology, enzymatic activity, and binding measurements on chemically synthesized nonhydrolyzable acyl–coenzyme A (CoA) derivatives. We propose an interfacial catalytic mechanism that allows PatA to acylate hydrophobic PIMs anchored in the inner membrane of mycobacteria, through the use of water-soluble acyl-CoA donors. [less ▲]

Detailed reference viewed: 58 (4 UL)
Full Text
Peer Reviewed
See detailLocal Social Interaction and Urban Equilibria
Picard, Pierre M UL; Augeraud-Veron, Emmanuelle; Maruhenda, Fransico

in Mathematical Social Sciences (2021), 112

In this paper we investigate the effect of local interaction in a simple urban economics model. Agents interact with others if and only if their interaction benefit outweighs their travel cost and ... [more ▼]

In this paper we investigate the effect of local interaction in a simple urban economics model. Agents interact with others if and only if their interaction benefit outweighs their travel cost and therefore meet others only within finite geographic windows. We show that two or more cites may co-exist at the equilibrium provided that they are sufficiently distant. For any interaction surplus function, there exists a unique spatial equilibrium on not too large city supports. The population density within a city is determined by a second order advance-delay differential equation, whose solutions are fully characterized for linear interaction surplus functions. Numerical analyses show that more localized interactions yield flatter population density and land rents over larger extents of the city support. They do not give support to the idea that multiple subcenters can be caused by small and finite geographic windows of interaction. [less ▲]

Detailed reference viewed: 19 (0 UL)
Full Text
Peer Reviewed
See detailThe effect of a pain educational video intervention upon child pain-related outcomes: A randomized controlled study
Rheel, Emma; Ickmans, Kelly; Wauters, Aline et al

in European Journal of Pain (2021), 25(10), 2094-2111

Background: Pain neuroscience education (PNE) has received increasing research attention demonstrating beneficial effects on pain-related outcomes in adults. Conversely, studies on the effectiveness of ... [more ▼]

Background: Pain neuroscience education (PNE) has received increasing research attention demonstrating beneficial effects on pain-related outcomes in adults. Conversely, studies on the effectiveness of PNE in children are scarce. Methods: This study investigated the effect of a pain educational video intervention on child pain-related outcomes (i.e. experienced pain intensity, pain-related fear and catastrophic worry about pain, pain threshold and pain knowledge) in healthy children undergoing an experimental pain task. Furthermore, the moderating role of children's demographic (i.e. sex and age) and psychological (i.e. baseline pain knowledge and anticipated pain intensity, pain-related fear and catastrophic worry) characteristics was examined. Participants were 89 children (Mage = 11.85, SD = 1.78), randomly assigned to either a condition whereby they were instructed to watch a brief pain educational video (i.e. experimental group) or to a control condition whereby they did not watch any video. Results: Study findings revealed that accurate pain knowledge and pain threshold were higher amongst children in the experimental group compared to the control group. In contrast with expectations, no main effects of the video intervention were observed for experienced pain intensity, pain-related fear and catastrophic worry. Moderation analyses indicated that the video intervention contributed, in comparison with the control condition, to higher levels of pain knowledge amongst younger children only and to higher pain thresholds amongst boys only. Conclusions: Further investigation is needed to optimize pain educational video interventions and to determine whether more beneficial outcomes can be found in clinical (i.e. non-experimental) situations and in children with persistent or recurring pain problems. Significance: Examining the impact of pain educational interventions within a non-clinical setting is deemed particularly important given that adaptive pain coping strategies likely play an important role in preventing the development and maintenance of future maladaptive pain-related behaviour. Further, study findings provide preliminary evidence of baseline and demographic (i.e. age and sex) characteristics explaining differences in the effect of a pain educational video intervention in pain knowledge and pain-related experiences during experimental pain. [less ▲]

Detailed reference viewed: 22 (0 UL)
Full Text
See detailDas luxemburgische Schulsystem und seine Schulen
Backes, Susanne UL; Lenz, Thomas UL

in LUCET, SCRIPT (Ed.) Nationaler Bildungsbericht Luxemburg 2021 (2021)

Detailed reference viewed: 38 (4 UL)
Full Text
See detailKulturen des Reparierens und die Lebensdauer der Dinge (Teil 1)
Krebs, Stefan UL; Schabacher, Gabriele; Weber, Heike

in TU: Zeitschrift für Technik im Unterricht (2021), 46(2), 5-13

Detailed reference viewed: 29 (2 UL)
Full Text
Peer Reviewed
See detailAssessment and Measurement in Health Psychology
van Ryckeghem, Dimitri UL; Crombez, Geert

in Reference Module in Neuroscience and Biobehavioral Psychology (2021)

Sound assessment and measurement is at the heart of every discipline, including health psychology. Within the current chapter, we address several key issues of assessment and measurement in health ... [more ▼]

Sound assessment and measurement is at the heart of every discipline, including health psychology. Within the current chapter, we address several key issues of assessment and measurement in health psychology. We discuss the strengths and weaknesses of commonly used methodologies in health psychology research and clinic, including questionnaire assessment and ecological momentary assessment, as well as potential pitfalls in using these assessment methods. Next, we discuss three pivotal features of assessment (i.e. reliability, validity, and responsiveness) and their importance for assessment of health psychological constructs. Last, we discuss some examples of tools to assess health outcomes in research and evidence-based practice as well as future directions in the field of health psychology assessment. [less ▲]

Detailed reference viewed: 41 (1 UL)
Full Text
Peer Reviewed
See detailCasual Leisure in Rich-Prospect: Advancing Visual Information Behavior for Digital Museum Collections
Morse, Christopher UL; Niess, Jasmin; Lallemand, Carine UL et al

in Journal on Computing and Cultural Heritage (2021), 14(3),

As digital cultural collections become increasingly sophisticated in their scope and functionality, there is a need to build an in-depth understanding concerning the information behaviors of users in this ... [more ▼]

As digital cultural collections become increasingly sophisticated in their scope and functionality, there is a need to build an in-depth understanding concerning the information behaviors of users in this new domain. Research has demonstrated that many digital museum visitors are engaged in casual leisure during exploration of a collection, suggesting that they do not have an inherent information goal but rather seek new experiences or learning opportunities based on personal curiosity and moments of discovery. Consequently, understanding how to translate casual leisure contexts into meaningful interaction design may play a critical role in designing engaging digital collections. Our study reports on the user experience of a largely unexplored user interface design framework called rich-prospect, which was originally developed to enhance browsing and discovery for complex visual collections. We performed a mixed-method, within-subjects study (N=30) that simulated a casual leisure approach to information browsing and retrieval across three different rich-prospect interfaces for digital cultural heritage. Our results show that rich-prospect scores well in the hedonic facets of its user experience, whereas pragmatic aspects have room for improvement. Additionally, through our qualitative analysis of participant feedback, we derived salient themes relating to the exploratory browsing experience. We conclude with a series of design implications to better connect interactive elements with casual leisure contexts for digital cultural collections. © 2021 Owner/Author. [less ▲]

Detailed reference viewed: 21 (1 UL)
Full Text
See detailSchülerinnen und Schüler im luxemburgischen Schulsystem
Backes, Susanne UL; Lenz, Thomas UL

in LUCET, SCRIPT (Ed.) Nationaler Bildungsbericht Luxemburg 2021 (2021)

Detailed reference viewed: 28 (0 UL)
Full Text
Peer Reviewed
See detailMeasurement Invariance of Test Anxiety Across Four School Subjects
Schneider, Rebecca; Sparfeldt, Jörn R; Niepel, Christoph UL et al

in European Journal of Psychological Assessment (2021)

Detailed reference viewed: 42 (0 UL)
Full Text
See detailLes élèves dans le système scolaire luxembourgeois
Backes, Susanne UL; Lenz, Thomas UL

in LUCET, SCRIPT (Ed.) Rapport national sur l’éducation au Luxembourg 2021 (2021)

Detailed reference viewed: 47 (0 UL)
Full Text
Peer Reviewed
See detailAuction-based Multiple Channel Cooperative Spectrum Sharing in Hybrid Satellite-Terrestrial IoT Networks
Zhang, Xiaokai; Guo, Daoxing; An, Kang et al

in IEEE Internet of Things Journal (2021), 8(8), 7009-7023

In this paper, we investigate the multiple-channel cooperative spectrum sharing in hybrid satellite-terrestrial internet of things (IoT) networks with auction mechanism, which is designed to reduce the ... [more ▼]

In this paper, we investigate the multiple-channel cooperative spectrum sharing in hybrid satellite-terrestrial internet of things (IoT) networks with auction mechanism, which is designed to reduce the operational expenditure of the satellitebased IoT (S-IoT) network while alleviating the spectrum scarcity issues of terrestrial-based IoT (T-IoT) network. The cluster heads of selected T-IoT networks assist the primary satellite users transmission through cooperative relaying techniques in exchange for spectrum access. We propose an auction-based optimization problem to maximize the sum transmission rate of all primary S-IoT receivers with the appropriate secondary network selection and corresponding radio resource allocation profile by the distributed implementation, while meeting the minimum transmission rate of secondary receivers of each T-IoT network. Specifically, the one-shot VCG auction is introduced to obtain the maximum social welfare, where the winner determination problem is transformed into an assignment problem and solved by the Hungarian algorithm. To further reduce the primary satellite network decision complexity, the sequential Vickrey auction is implemented by sequential fashion until all channels are auctioned. Due to incentive compatibility with those two auction mechanisms, the secondary T-IoT cluster yields the true bids of each channel, where both the non-orthogonal multiple access (NOMA) and time division multiple access (TDMA) schemes are implemented in cooperative communication. Finally, simulation results validate the effectiveness and fairness of the proposed auction-based approach as well as the superiority of the NOMA scheme in secondary relays selection. Moreover, the influence of key factors on the performance of the proposed scheme is analyzed in detail. [less ▲]

Detailed reference viewed: 16 (0 UL)
Full Text
Peer Reviewed
See detailCoverage Probability of Double-IRS Assisted Communication Systems
Papazafeiropoulos, Anastasios; Kourtessis, Pandelis; Chatzinotas, Symeon UL et al

in IEEE Wireless Communications Letters (2021), 10(8), 1722-1726

In this paper, we derive the coverage probability of a double-intelligent reflecting surface (IRS) assisted wireless network and study the impact of multiplicative beamforming gain and correlated Rayleigh ... [more ▼]

In this paper, we derive the coverage probability of a double-intelligent reflecting surface (IRS) assisted wireless network and study the impact of multiplicative beamforming gain and correlated Rayleigh fading. In particular, we derive a novel closed-form expression of the coverage probability of a single-input single-output (SISO) system assisted by two large IRSs while being dependent on the corresponding arbitrary reflecting beamforming matrices (RBMs) and large-scale statistics in terms of correlation matrices. Taking advantage of th large-scale statistics, we achieve to perform optimization of the RBM of both IRSs at every several coherence intervals rather at each interval. This property, based on statistical channel state information (CSI), is of paramount importance in multi-IRS assisted networks, which are accompanied with increased computational complexity during their RBM optimization. Numerical results validate the tightness of the analytical results even for small IRSs and reveal insightful properties. [less ▲]

Detailed reference viewed: 21 (1 UL)
Full Text
See detailLe système scolaire luxembourgeois et ses école
Backes, Susanne UL; Lenz, Thomas UL

in LUCET, SCRIPT (Ed.) Rapport national sur l’éducation au Luxembourg 2021 (2021)

Detailed reference viewed: 72 (0 UL)
Full Text
Peer Reviewed
See detailMulti-layer Space Information Networks: Access Design and Softwarization
Al-Hraishawi, Hayder UL; Minardi, Mario UL; Chougrani, Houcine UL et al

in IEEE Access (2021)

In this paper, we propose an approach for constructing a multi-layer multi-orbit space information network (SIN) to provide high-speed continuous broadband connectivity for space missions (nanosatellite ... [more ▼]

In this paper, we propose an approach for constructing a multi-layer multi-orbit space information network (SIN) to provide high-speed continuous broadband connectivity for space missions (nanosatellite terminals) from the emerging space-based Internet providers. This notion has been motivated by the rapid developments in satellite technologies in terms of satellite miniaturization and reusable rocket launch, as well as the increased number of nanosatellite constellations in lower orbits for space downstream applications, such as earth observation, remote sensing, and Internet of Things (IoT) data collection. Specifically, space-based Internet providers, such as Starlink, OneWeb, and SES O3b, can be utilized for broadband connectivity directly to/from the nanosatellites, which allows a larger degree of connectivity in space network topologies. Besides, this kind of establishment is more economically efficient and eliminates the need for an excessive number of ground stations while achieving real-time and reliable space communications. This objective necessitates developing suitable radio access schemes and efficient scalable space backhauling using inter-satellite links (ISLs) and inter-orbit links (IOLs). Particularly, service-oriented radio access methods in addition to software-defined networking (SDN)-based architecture employing optimal routing mechanisms over multiple ISLs and IOLs are the most essential enablers for this novel concept. Thus, developing this symbiotic interaction between versatile satellite nodes across different orbits will lead to a breakthrough in the way that future downstream space missions and satellite networks are designed and operated. [less ▲]

Detailed reference viewed: 57 (13 UL)
Full Text
See detailMedical Histories of Belgium New Narratives on Health, Care and Citizenship in the Nineteenth and Twentieth Centuries
Majerus, Benoît UL; Vanden Driessche, Joris

Book published by Manchester University Press (2021)

Detailed reference viewed: 74 (3 UL)