Last 7 days
Bookmark and Share    
See detailDie Mehrsprachigkeit der Prosa. Ein Kapitel aus Finnegans Wake
Dembeck, Till UL

in Dell’Anno, Sina; Imboden, Achim; Simon, Ralf (Eds.) et al Prosa: Theorie, Exegese, Geschichte (2021)

Detailed reference viewed: 39 (0 UL)
See detailLieder verwerfen. Annäherungen an Oswald Eggers nihilum album
Dembeck, Till UL

in Endres, Martin; Simon, Ralf (Eds.) ‚Wort für Wort‘ – Lektüren zum Werk von Oswald Egger (2021)

Detailed reference viewed: 49 (0 UL)
See detailEinleitung
Dembeck, Till UL; Pavlik, Jennifer

in Dembeck, Till; Pavlik, Jennifer (Eds.) Medienwissenschaften und Mediendidaktik im Dialog. Zum Status Quoe von Medienbildung im Deutschunterricht (2021)

Detailed reference viewed: 43 (0 UL)
Full Text
Peer Reviewed
See detailCentralized Gateway Concept for Precoded Multi-beam GEO Satellite Networks
Kisseleff, Steven UL; Lagunas, Eva UL; Krivochiza, Jevgenij et al

in VTC2021-Fall Workshop on Evolution of Non-Terrestrial Networks Toward 6G, Sept. 2021 (2021)

Detailed reference viewed: 87 (28 UL)
Full Text
Peer Reviewed
See detailGendered Prices
Kräussl, Roman UL; Adams, Renee B.; Navone, Marco A. et al

in Review of Financial Studies (2021), 34(8)(3789-3839),

Detailed reference viewed: 50 (2 UL)
Full Text
Peer Reviewed
See detailVarying stimulus duration reveals consistent neural activity and behavior for human face individuation
Retter, Talia UL; Jiang, Fang; Webster, Michael A. et al

in Neuroscience (2021), 472

Establishing consistent relationships between neural activity and behavior is a challenge in human cognitive neuroscience research. We addressed this issue using variable time constraints in an oddball ... [more ▼]

Establishing consistent relationships between neural activity and behavior is a challenge in human cognitive neuroscience research. We addressed this issue using variable time constraints in an oddball frequency-sweep design for visual discrimination of complex images (face exemplars). Sixteen participants viewed sequences of ascending presentation durations, from 25 to 333 ms (40–3 Hz stimulation rate) while their electroencephalogram (EEG) was recorded. Throughout each sequence, the same unfamiliar face picture was repeated with variable size and luminance changes while different unfamiliar facial identities appeared every 1 s (1 Hz). A neural face individuation response, tagged at 1 Hz and its unique harmonics, emerged over the occipito-temporal cortex at 50 ms stimulus duration (25–100 ms across individuals), with an optimal response reached at 170 ms stimulus duration. In a subsequent experiment, identity changes appeared non-periodically within fixed-frequency sequences while the same participants performed an explicit face individuation task. The behavioral face individuation response also emerged at 50 ms presentation time, and behavioral accuracy correlated with individual participants’ neural response amplitude in a weighted middle stimulus duration range (50–125 ms). Moreover, the latency of the neural response peaking between 180 and 200 ms correlated strongly with individuals’ behavioral accuracy in this middle duration range, as measured independently. These observations point to the minimal (50 ms) and optimal (170 ms) stimulus durations for human face individuation and provide novel evidence that inter-individual differences in the magnitude and latency of early, high-level neural responses are predictive of behavioral differences in performance at this function. [less ▲]

Detailed reference viewed: 41 (2 UL)
Full Text
Peer Reviewed
See detailLogics of Formal Inconsistency enriched with replacement: an algebraic and modal account
Carnielli, Walter; Coniglio, Marcelo; Fuenmayor Pelaez, David UL

in Review of Symbolic Logic (2021), online first

Detailed reference viewed: 47 (1 UL)
Full Text
Peer Reviewed
See detailShort-Term Fluctuation of Subjective Age and its Correlates: An Ecological Momentary Assessment of Older Adults
Kornadt, Anna Elena UL; Pauly, Theresa; Gerstorf, Denis et al

in Innovation in Aging (2021), 5(Supplement_1), 287-287

We examined short-term fluctuations of subjective age with data obtained from 123 young-old (Mage = 67.19 years) and 47 old-old adults (Mage = 86.59 years) who reported their momentary subjective age six ... [more ▼]

We examined short-term fluctuations of subjective age with data obtained from 123 young-old (Mage = 67.19 years) and 47 old-old adults (Mage = 86.59 years) who reported their momentary subjective age six times a day over seven consecutive days as they were going about their everyday lives. Participants felt younger on a large majority of occasions, and 25% of the total variability in subjective age could be attributed to within-person variation. Those with younger trait subjective ages exhibited larger moment-to-moment variation, while chronological age did not impact variability. Furthermore, we investigated relationships between within-day fluctuations of subjective age and daily cortisol fluctuations. Our findings extend the literature on subjective age by showing that how old people feel can vary on a momentary basis, that state and trait components of subjective age are related, and that fluctuations in subjective age are related to biomarkers of stress. [less ▲]

Detailed reference viewed: 32 (1 UL)
Full Text
Peer Reviewed
See detailDesigning Pareto optimal electricity retail rates when utility customers are prosumers
Saumweber, Andrea; Wederhake, Lars; Cardoso, Gonçalo et al

in Energy Policy (2021), 156

Electric retail rate design is relevant to utilities, customers, and regulators as retail rates impact the utility's revenue as well as the customers' electricity bills. In California, regulators approve ... [more ▼]

Electric retail rate design is relevant to utilities, customers, and regulators as retail rates impact the utility's revenue as well as the customers' electricity bills. In California, regulators approve rate proposals by privately owned vertical integrated utilities. Approval, however, is subject to compliance with multiple, potentially conflicting objectives such as economic or environmental objectives. Additionally, retail rates are price signals that affect how customers use electricity services. When utility customers change their usage, they also impact the ratemaking objectives to which rates have been designed. This suggests a feedback loop, which is particularly pronounced with prosumers, as they can systematically optimize their interactions with the electricity system. Prevalent ratemaking methods may not deliver retail rates that are optimal for multiple objectives when customers are prosumers. We propose a novel ratemaking method that formalizes the problem of designing retail rates as a multi-criteria optimization problem and accounts for prosumer reactions through a simulation-based optimization approach. Through a fictive case study, we found that the resulting Pareto frontiers are useful in recognizing and balancing tradeoffs among conflicting ratemaking objectives. Additionally, our results indicate that prevailing retail rates in California are not Pareto optimal. [less ▲]

Detailed reference viewed: 45 (0 UL)
Full Text
Peer Reviewed
See detailThe Comprehensive Mindfulness Experience: A Typological Approach to the Potential Benefits of Mindfulness for Dealing with Motivational Conflicts
Grund, Axel UL; Senker, Kerstin; Dietrich, Julia et al

in Motivation Science (2021)

We wanted to address two critical limitations of research on mindfulness and motivational conflict, by (a) distinguishing between conflict experiences and conflict reactivity and (b) by applying a ... [more ▼]

We wanted to address two critical limitations of research on mindfulness and motivational conflict, by (a) distinguishing between conflict experiences and conflict reactivity and (b) by applying a typological approach, exploring natural combinations of two core qualities of (state) mindfulness: present moment awareness and a nonjudgmental stance. Using an experience-sampling (ES) design (N = 107 on the personal and 3862 at the observational level) with baseline and posttest measures of general affective wellbeing, we found that between-person differences in everyday conflict reactivity (i.e., perseverative and self-evaluative reactions toward conflict experiences) but not in conflict experiences per se (i.e., feeling that one wants to or should do something else) predicted impaired affective well-being after the ES period. Furthermore, multilevel latent profile analysis showed that momentary conflict reactivity was lowest when participants reported to be both momentarily aware and nonjudgmental, mirroring the comprehensive mindfulness experience. These effects existed while controlling for baseline and accompanying affect as well as for conflict intensity, strengthening the idea that motivational conflict itself is not a critical instance of self-regulation failure and that being mindful may contribute to remain functionally efficient and psychological well-adjusted. [less ▲]

Detailed reference viewed: 75 (3 UL)
Full Text
Peer Reviewed
See detailHilbert Sinkhorn Divergence for Optimal Transport
Li, Qian; Wang, Zhichao; Li, Gang et al

in Proceedings of 2021 IEEE/CVF Conference on Computer Vision and Pattern Recognition - CVPR'21 (2021)

Detailed reference viewed: 43 (3 UL)
Full Text
Peer Reviewed
See detailSchool Alienation Among Adolescents in Switzerland and Luxembourg: The Role of Parent and Peer Supportive Attitudes Toward School and Teacher Autonomy Support
Morinaj, Julia; de Moll, Frederick UL; Hascher, Tina et al

in Youth and Society (2021), early online

Prior research has shown that socialization agents such as parents, peers, and teachers can play a significant role in adolescents’ educational outcomes, both through direct support or indirectly via ... [more ▼]

Prior research has shown that socialization agents such as parents, peers, and teachers can play a significant role in adolescents’ educational outcomes, both through direct support or indirectly via supportive attitudes that foster students’ bonding to school and academic motivation. However, less is known about the effects of parent and peer supportive attitudes and teacher autonomy support on unfavorable educational outcomes such as school alienation. This study investigated the role of socialization agents in the development of school alienation among 544 secondary school students in Switzerland and 535 secondary school students in Luxembourg in grades 7 to 9. Results of structural equation modeling showed that the role of socialization agents varies across the school alienation domains and educational contexts, with peers having the most substantial impact on all three domains of alienation in both countries. [less ▲]

Detailed reference viewed: 44 (2 UL)
Full Text
Peer Reviewed
See detailMindfulness and Academic Emotions: A Field Study During a Lecture
Senker, Kerstin; Dietrich, Julia; Fries, Stefan et al

in Learning and Individual Differences (2021)

The aim of the present study was to examine whether mindfulness and academic emotions are beneficially related in specific learning situations. For that purpose, we conducted a field study during two ... [more ▼]

The aim of the present study was to examine whether mindfulness and academic emotions are beneficially related in specific learning situations. For that purpose, we conducted a field study during two lecture sessions in which we measured momentary mindfulness and academic emotions of N = 105 university students repeatedly, resulting in N = 551 measurements. As expected, multilevel analyses indicated that students who were more mindful during the lecture felt more positive and less negative activating emotions, better valence, and were more optimistic about an upcoming exam. In contrast to our hypotheses, trait mindfulness was not found to be related to current academic emotions. Multilevel mediation analyses point towards an indirect effect of trait mindfulness via momentary mindfulness during the lecture sessions. These findings suggest that mindfulness is of high relevance to academic emotions which in turn are important for learning, achievement, and well-being. [less ▲]

Detailed reference viewed: 236 (6 UL)
See detailRecent analytical methods for risk assessment of emerging contaminants in ecosystems
Bataineh, Mahmoud; Schymanski, Emma UL; Gallampois, Christine M. J.

in Pollution Assessment for Sustainable Practices in Applied Sciences and Engineering (2021)

Detailed reference viewed: 52 (1 UL)
Full Text
See detailOccurrence and Distribution of Pharmaceuticals and their Transformation Products in Luxembourgish Surface Waters
Singh, Randolph UL; Lai, Adelene UL; Krier, Jessy UL et al

E-print/Working paper (2021)

This pre-print describes the analysis of pharmaceuticals and their transformation products in surface water samples collected in Luxembourg from 2019 to 2020. Details of the experimental and computational ... [more ▼]

This pre-print describes the analysis of pharmaceuticals and their transformation products in surface water samples collected in Luxembourg from 2019 to 2020. Details of the experimental and computational tools and workflows used are fully described in the manuscript. Links to the suspect lists, codes used, and data files are also provided. [less ▲]

Detailed reference viewed: 31 (0 UL)
Full Text
See detailDiscovering Pesticides and their Transformation Products in Luxembourg Waters using Open Cheminformatics Approaches
Krier, Jessy UL; Singh, Randolph UL; Kondic, Todor UL et al

E-print/Working paper (2021)

Abstract The diversity of hundreds of thousands of potential organic pollutants and the lack of (publicly available) information about many of them is a huge challenge for environmental sciences ... [more ▼]

Abstract The diversity of hundreds of thousands of potential organic pollutants and the lack of (publicly available) information about many of them is a huge challenge for environmental sciences, engineering, and regulation. Suspect screening based on high-resolution liquid chromatography-mass spectrometry (LC-HRMS) has enormous potential to help characterize the presence of these chemicals in our environment, enabling the detection of known and newly emerging pollutants, as well as their potential transformation products (TPs). Here, suspect list creation (focusing on pesticides relevant for Luxembourg, incorporating data sources in 4 languages) was coupled to an automated retrieval of related TPs from PubChem based on high confidence suspect hits, to screen for pesticides and their TPs in Luxembourgish river samples. A computational workflow was established to combine LC-HRMS analysis and pre-screening of the suspects (including automated quality control steps), with spectral annotation to determine which pesticides and, in a second step, their related TPs may be present in the samples. The data analysis with Shinyscreen (https://git-r3lab.uni.lu/eci/shinyscreen/), an open source software developed in house, coupled with custom-made scripts, revealed the presence of 162 potential pesticide masses and 135 potential TP masses in the samples. Further identification of these mass matches was performed using the open source MetFrag (https://msbi.ipb-halle.de/MetFrag/). Eventual target analysis of 36 suspects resulted in 31 pesticides and TPs confirmed at Level-1 (highest confidence), and five pesticides and TPs not confirmed due to different retention times. Spatio-temporal analysis of the results showed that TPs and pesticides followed similar trends, with a maximum number of potential detections in July. The highest detections were in the rivers Alzette and Mess and the lowest in the Sûre and Eisch. This study (a) added pesticides, classification information and related TPs into the open domain, (b) developed automated open source retrieval methods - both enhancing FAIRness (Findability, Accessibility, Interoperability and Reusability) of the data and methods; and (c) will directly support “L’Administration de la Gestion de l’Eau” on further monitoring steps in Luxembourg. [less ▲]

Detailed reference viewed: 53 (3 UL)
Full Text
Peer Reviewed
See detailOccurrence and Distribution of Pharmaceuticals and Their Transformation Products in Luxembourgish Surface Waters
Singh, Randolph UL; Lai, Adelene UL; Krier, Jessy UL et al

in ACS Environmental Au (2021)

Pharmaceuticals and their transformation products (TPs) are continuously released into the aquatic environment via anthropogenic activity. To expand knowledge on the presence of pharmaceuticals and their ... [more ▼]

Pharmaceuticals and their transformation products (TPs) are continuously released into the aquatic environment via anthropogenic activity. To expand knowledge on the presence of pharmaceuticals and their known TPs in Luxembourgish rivers, 92 samples collected during routine monitoring events between 2019 and 2020 were investigated using nontarget analysis. Water samples were concentrated using solid-phase extraction and then analyzed using liquid chromatography coupled to a high-resolution mass spectrometer. Suspect screening was performed using several open source computational tools and resources including Shinyscreen (https://git-r3lab.uni.lu/eci/shinyscreen/), MetFrag (https://msbi.ipb-halle.de/MetFrag/), PubChemLite (https://zenodo.org/record/4432124), and MassBank (https://massbank.eu/MassBank/). A total of 94 pharmaceuticals, 88 confirmed at a level 1 confidence (86 of which could be quantified, two compounds too low to be quantified) and six identified at level 2a, were found to be present in Luxembourg rivers. Pharmaceutical TPs (12) were also found at a level 2a confidence. The pharmaceuticals were present at median concentrations up to 214 ng/L, with caffeine having a median concentration of 1424 ng/L. Antihypertensive drugs (15), psychoactive drugs (15), and antimicrobials (eight) were the most detected groups of pharmaceuticals. A spatiotemporal analysis of the data revealed areas with higher concentrations of the pharmaceuticals, as well as differences in pharmaceutical concentrations between 2019 and 2020. The results of this work will help guide activities for improving water management in the country and set baseline data for continuous monitoring and screening efforts, as well as for further open data and software developments. [less ▲]

Detailed reference viewed: 43 (2 UL)
Full Text
Peer Reviewed
See detailRetrospective non-target analysis to support regulatory water monitoring: from masses of interest to recommendations via in silico workflows
Lai, Adelene UL; Singh, Randolph UL; Kovalova, Lubomira et al

in Environmental Sciences Europe (2021), 33(1), 43

Abstract Background Applying non-target analysis (NTA) in regulatory environmental monitoring remains challenging—instead of having exploratory questions, regulators usually already have specific ... [more ▼]

Abstract Background Applying non-target analysis (NTA) in regulatory environmental monitoring remains challenging—instead of having exploratory questions, regulators usually already have specific questions related to environmental protection aims. Additionally, data analysis can seem overwhelming because of the large data volumes and many steps required. This work aimed to establish an open in silico workflow to identify environmental chemical unknowns via retrospective NTA within the scope of a pre-existing Swiss environmental monitoring campaign focusing on industrial chemicals. The research question addressed immediate regulatory priorities: identify pollutants with industrial point sources occurring at the highest intensities over two time points. Samples from 22 wastewater treatment plants obtained in 2018 and measured using liquid chromatography–high resolution mass spectrometry were retrospectively analysed by (i) performing peak-picking to identify masses of interest; (ii) prescreening and quality-controlling spectra, and (iii) tentatively identifying priority “known unknown” pollutants by leveraging environmentally relevant chemical information provided by Swiss, Swedish, EU-wide, and American regulators. This regulator-supplied information was incorporated into MetFrag, an in silico identification tool replete with “post-relaunch” features used here. This study’s unique regulatory context posed challenges in data quality and volume that were directly addressed with the prescreening, quality control, and identification workflow developed. Results One confirmed and 21 tentative identifications were achieved, suggesting the presence of compounds as diverse as manufacturing reagents, adhesives, pesticides, and pharmaceuticals in the samples. More importantly, an in-depth interpretation of the results in the context of environmental regulation and actionable next steps are discussed. The prescreening and quality control workflow is openly accessible within the R package Shinyscreen, and adaptable to any (retrospective) analysis requiring automated quality control of mass spectra and non-target identification, with potential applications in environmental and metabolomics analyses. Conclusions NTA in regulatory monitoring is critical for environmental protection, but bottlenecks in data analysis and results interpretation remain. The prescreening and quality control workflow, and interpretation work performed here are crucial steps towards scaling up NTA for environmental monitoring. [less ▲]

Detailed reference viewed: 56 (2 UL)
Full Text
Peer Reviewed
See detailDynamic Bandwidth Allocation and Precoding Design for Highly-Loaded Multiuser MISO in Beyond 5G Networks
Vu, Thang Xuan UL; Chatzinotas, Symeon UL; Ottersten, Björn UL

in IEEE Transactions on Wireless Communications (2021)

Multiuser techniques play a central role in the fifth-generation (5G) and beyond 5G (B5G) wireless networks that exploit spatial diversity to serve multiple users simultaneously in the same frequency ... [more ▼]

Multiuser techniques play a central role in the fifth-generation (5G) and beyond 5G (B5G) wireless networks that exploit spatial diversity to serve multiple users simultaneously in the same frequency resource. It is well known that a multi-antenna base station (BS) can efficiently serve a number of users not exceeding the number of antennas at the BS via precoding design. However, when there are more users than the number of antennas at the BS, conventional precoding design methods perform poorly because inter-user interference cannot be efficiently eliminated. In this paper, we investigate the performance of a highly-loaded multiuser system in which a BS simultaneously serves a number of users that is larger than the number of antennas. We propose a dynamic bandwidth allocation and precoding design framework and apply it to two important problems in multiuser systems: i) User fairness maximization and ii) Transmit power minimization, both subject to predefined quality of service (QoS) requirements. The premise of the proposed framework is to dynamically assign orthogonal frequency channels to different user groups and carefully design the precoding vectors within every user group. Since the formulated problems are non-convex, we propose two iterative algorithms based on successive convex approximations (SCA), whose convergence is theoretically guaranteed. Furthermore, we propose a low-complexity user grouping policy based on the singular value decomposition (SVD) to further improve the system performance. Finally, we demonstrate via numerical results that the proposed framework significantly outperforms existing designs in the literature. [less ▲]

Detailed reference viewed: 44 (4 UL)