Last 7 days
Bookmark and Share    
Full Text
Peer Reviewed
See detailFirst law of quantum thermodynamics in a driven open two-level system
Juan-Delgado, Adrian; Chenu, Aurélia UL

in Physical Review. A (2021)

Assigning the variations of internal energy into heat or work contributions is a challenging task due to the fact that these properties are trajectory dependent. A number of proposals have been put ... [more ▼]

Assigning the variations of internal energy into heat or work contributions is a challenging task due to the fact that these properties are trajectory dependent. A number of proposals have been put forward for open quantum systems following an arbitrary dynamics. We here focus on nonequilibrium thermodynamics of a two-level system and explore in addition to the conventional approach, two definitions motivated by either classical work or heat in which the driving Hamiltonian or the trajectory itself, respectively, are used to set up a reference basis. We first give the thermodynamic properties for an arbitrary dynamics and illustrate the results on the Bloch sphere. Then, we solve the particular example of a periodically driven qubit interacting with a dissipative and decoherence bath. Our results illustrate the trajectory-dependent character of heat and work and how contributions originally assigned to dissipation in the Lindblad equation can become a coherent part assigned to work. [less ▲]

Detailed reference viewed: 49 (2 UL)
Full Text
Peer Reviewed
See detailSciKGraph: A knowledge graph approach to structure a scientific field
Dalle Lucca Tosi, Mauro UL; dos Reis, Julio Cesar

in Journal of Informetrics (2021), 15(1), 101109

Detailed reference viewed: 24 (1 UL)
Full Text
Peer Reviewed
See detailDer Zusammenhang emotionaler Kosten bei Grundschullehramtsstudierenden mit ihrer informatischen Problemlösekompetenz
Weber, Anke Maria UL; Barkela, Veronika; Stiel-Dämmer, Sabrina et al

in Empirische Pädagogik (2021), 35(1), 93-111

Computational thinking as an aspect of informatic problem-solving is considered to be an increasingly important competence. Computational thinking can already be fostered in primary school children, but ... [more ▼]

Computational thinking as an aspect of informatic problem-solving is considered to be an increasingly important competence. Computational thinking can already be fostered in primary school children, but its teaching in primary school remains sparse. A possible reason might be primary school teachers’ uncertainty regarding computer science and programming. Therefore, we developed a university course to teach the implementation of computational thinking to primary school student teachers with the goal of reducing possible emotional costs such as anxiety. Within this framework, we examined interindividual differences in informatic problem solving and logical thinking as prerequisites for reduction in these emotional costs. 70 students participated in the study with pre- and a post-assessment. A multiple regression showed that students’ emotional costs remained unchanged, however, informatic problem solving had a negative influence. Students with higher informatic problem solving competencies reported lower emotional costs. Logical thinking had no effect. The results indicate that students’ anxiety should be considered when eaching computational thinking. [less ▲]

Detailed reference viewed: 36 (0 UL)
Full Text
Peer Reviewed
See detailAbility of 6- to 7-year-old children to choose the control of variables strategy.
Reuter, Timo; Weber, Anke Maria UL; Flottmann, Julia et al

in Journal of Cognitive Education and Psychology (2021), 20(2), 70-82

Planning and conducting experiments require the application of the control of vari- ables strategy (CVS). Research indicates that older children can learn the CVS by engag- ing in guided-inquiry ... [more ▼]

Planning and conducting experiments require the application of the control of vari- ables strategy (CVS). Research indicates that older children can learn the CVS by engag- ing in guided-inquiry activities. It has not been studied yet whether this is also the case for children as young as 6- to 7-years. 145 children aged 6–7 years participated in a study with a pre-, post-, follow-up test design comprising two experimental groups (EG 1, EG 2) and a control group (CG). EG 1 and EG 2 received a structured-inquiry lesson, thus, carrying out six predetermined experiments with an adult’s implicit guid- ance. While the lesson in EG 1 was in the same physics domain as the test’s phys- ics domain, in EG 2 the lesson’s physics domain differed from the test’s domain. The CG did not experiment. We assessed children’s CVS ability with a multiple-choice test. Results suggested that some children in the EGs learned the CVS, whereas in the CG, no learning effects occurred. However, most children in the EGs did not gain in the CVS ability, indicating that the small dose of six experiments in one physics domain was insufficient for learning the CVS. [less ▲]

Detailed reference viewed: 17 (1 UL)
Peer Reviewed
See detailCommentaire de l'arrêt CJUE, AU c/ Reliantco Investment LTD , aff. C-500/18, 4ème ch., 2 avr. 2020
Poillot, Elise UL

in Picod, Fabrice (Ed.) Jurisprudence de la CJUE 2020 (2021)

Detailed reference viewed: 49 (0 UL)
Full Text
Peer Reviewed
See detailKeyphrase extraction from single textual documents based on semantically defined background knowledge and co-occurrence graphs
Dalle Lucca Tosi, Mauro UL; Reis, Julio Cesar Dos

in International Journal of Metadata, Semantics and Ontologies (2021), 15(2), 121--132

Detailed reference viewed: 29 (1 UL)
Peer Reviewed
See detailCommentaires de l'arrêt de la CJUE, EUc/PE Digital GmbH, aff. C-641/19, 6ème ch. 8 oct. 2020
Poillot, Elise UL

in Picod, Fabrice (Ed.) Jurisprudence de la CJUE 2020 (2021)

Detailed reference viewed: 41 (0 UL)
Full Text
Peer Reviewed
See detailNumber Line Tasks and Their Relation to Arithmetics in Second to Fourth Graders
Georges, Carrie UL; Schiltz, Christine UL

in Journal of Numerical Cognition (2021), 7(1), 20--41

Detailed reference viewed: 25 (0 UL)
Full Text
Peer Reviewed
See detailContribution fiscale des entreprises au Mali : étude sur données individuelles
Bertinelli, Luisito UL; Bourgain, Arnaud UL; Diamouténé, Abdoul Karim

in Mondes en Développement (2021), 195(3), 75-94

This paper analyzes the tax burden borne by a large number of Malian companies (3,474) representing the totality of the formal sector of this country. By exploiting individual firm data collected from ... [more ▼]

This paper analyzes the tax burden borne by a large number of Malian companies (3,474) representing the totality of the formal sector of this country. By exploiting individual firm data collected from financial statements and balance sheets, we highlight the determinants of effective tax rates, such as firms’ size, industry, location, and other corporate attributes. We show that larger firms do benefit from lower effective tax rates, and this result is robust to various proxies of size and is even reinforced for profit-making firms. [less ▲]

Detailed reference viewed: 56 (2 UL)
Full Text
Peer Reviewed
See detailMake Women Great Again: women, misogyny and anti-capitalism on the right
Tebaldi, Catherine UL

in Fast Capitalism (2021)

Neo-confederate blogger Dissident Mama describes the January 6 Capitol Insurrection as “#resistance without the corporate sponsorship”. In a series of blogs, she appropriates the language of anti ... [more ▼]

Neo-confederate blogger Dissident Mama describes the January 6 Capitol Insurrection as “#resistance without the corporate sponsorship”. In a series of blogs, she appropriates the language of anti-capitalist movements to defend armed resistance from Charlottesville to the Capitol. In this essay I look at the role of women, like Dissident Mama, in far-right activism online, both their role in organizing and the ways in which they use anti-capitalist language to reinforce the gender roles of post-war American breadwinner capitalism. This emerges out of real failures of liberal feminism and late capitalism, but instead appropriates critiques of capital that might challenge the identity politics of the white right, instead encouraging the reinvestment in the conservative social order. Arguing for a rerun to “traditional” roles as an answer to economic as well as social challenges, the women of the right see home as a battle, and their language displaces anxieties about capitalism onto anxieties about gender, family and love. [less ▲]

Detailed reference viewed: 24 (2 UL)
Full Text
Peer Reviewed
See detailSpeaking Post Truth to Power
Tebaldi, Catherine UL

in Review of Education, Pedagogy and Cultural Studies (2021)

Detailed reference viewed: 25 (0 UL)
Peer Reviewed
See detailA Tracing Application for Luxembourg? Position Paper of the LEGAFIGHT Experts’ Group
Poillot, Elise UL; Resta, Giorgio; Zeno-Zencovich, Vincenzo

in Poillot, Elise; Lenzini, Gabriele; Resta, Giorgio (Eds.) et al Data Protection in the Context of Covid-19. A Short (Hi)story of Tracing Applications (2021)

Detailed reference viewed: 53 (0 UL)
Full Text
See detailPost-quantum Efficient Proof for Graph 3-Coloring Problem
Ebrahimi, Ehsan UL

E-print/Working paper (2021)

Detailed reference viewed: 39 (10 UL)
Peer Reviewed
See detailRelationships between quantum IND-CPA notions
Ebrahimi, Ehsan UL; Unruh, Dominique; Carstens, Tore et al

Scientific Conference (2021)

Detailed reference viewed: 73 (6 UL)
Full Text
Peer Reviewed
See detailMulti-informant assessment of bullying in Austrian schools
Paljakka, Antonia; Schwab, Susanne; Zurbriggen, Carmen UL

in Frontiers in Education (2021), 6(712318),

Detailed reference viewed: 21 (0 UL)
Full Text
Peer Reviewed
See detailEntwicklung und erste empirische Überprüfung des Fragebogens zur Erfassung des generellen emotionalen Selbstkonzepts in der frühen Adoleszenz (FEGESK-A)
Schmidt, Philipp; Zurbriggen, Carmen UL

in Empirische Pädagogik (2021), 35(2), 183201

The general emotional self-concept (GESC) is highly relevant to psychosocial development in adolescence. However, the GESC is hardly considered within empirical education and educational science. This is ... [more ▼]

The general emotional self-concept (GESC) is highly relevant to psychosocial development in adolescence. However, the GESC is hardly considered within empirical education and educational science. This is also mirrored by the lack of appropriate measurement instruments. The aim of this paper is the development and first empirical evaluation of a questionnaire assessing the general emotional self-concept in early ado-lescence (QAGESC-A). The development of the QAGESC-A was based on the hierarchically structured Marsh/Shavelson model of the general self-concept. Two working models were generated. According to working model I, the GESC contains three dimensions (perception, expression, coping), whereas model II comprises two dimensions (perception, modulation). In accordance with these self-concept dimensions, 24 items were generated. Based on a sample of a pilot study with 142 students (MRageR = 10.98 years, SDRageR = 0.89 years), the questionnaire was then reduced stepwise to 12 items and evaluated for factorial validity and reliability. The results of the confirmatory factor analysis provide first evidence that the two-factor model fitted slightly better than the three-factor model. The questionnaire shows good reliability (α = .82, ω = .85) and the scales exhibit acceptable internal consistencies (α / ω = .75). [less ▲]

Detailed reference viewed: 145 (0 UL)
Full Text
Peer Reviewed
See detailExperimental Investigation of Soft-Landing of Quadrotors via Induced Wind Modeling Approach
Nekoo, Saeed Rafee; Sanchez Cuevas, Pedro Jesus UL; Acosta, José Ángel et al

in Experimental Investigation of Soft-Landing of Quadrotors via Induced Wind Modeling Approach (2021)

Detailed reference viewed: 37 (0 UL)
Full Text
Peer Reviewed
See detailA Meta-Analysis of the Literature on Climate Change and Migration
Jeusette, Lionel; Beine, Michel UL

in Journal of Demographic Economics (2021)

Recent surveys of the literature on climate change and migration emphasize the important diversity of outcomes and approaches of the empirical studies. In this pa- per, we conduct a meta-analysis in order ... [more ▼]

Recent surveys of the literature on climate change and migration emphasize the important diversity of outcomes and approaches of the empirical studies. In this pa- per, we conduct a meta-analysis in order to investigate the role of the methodological choices of these empirical studies in finding some particular results concerning the role of climatic factors as drivers of human mobility. We code 51 papers representative of the literature in terms of methodological approaches. This results in the coding of more than 85 variables capturing the methodology of the main dimensions of the analysis at the regression level. These dimensions include authors’ reputation, type of mobility, measures of mobility, type of data, context of the study, econometric methods and last but not least measures of the climatic factors. We look at the influence of these characteristics on the probability of finding any effect of climate change, of find- ing a displacement effect, of finding an increase in immobility and of finding evidence in favour of a direct versus an indirect effect. Our results highlight the role of some important methodological choices, such as the frequency of the data on mobility, the level of development, the measures of human mobility and of the climatic factors as well as the econometric methodology. [less ▲]

Detailed reference viewed: 26 (1 UL)