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See detailDealing with Non-Uniform Demands in Flexible GEO Satellites: The Carrier Aggregation Perspective
Lagunas, Eva UL; Kibria, Mirza; Al-Hraishawi, Hayder UL et al

in 10th Advanced Satellite Multimedia Systems Conference (ASMS) and 16th Signal Processing for Space Communications Workshop (SPSC), October 2020. (2020)

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See detail« La ville tri-viale : métro, ronds-points, kiosques »
Roelens, Nathalie UL

in , in Lire les villes (études réunies par Maria de Jesus Cabra, Maria Herminia Laurel et Franc Schuerewegen), Paris, Le manuscrit « Exotopies », pp. 27-39. - (2020)

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See detailTeaching the underlying rules of figural matrices in a short video increases test scores
Schneider, Benedikt; Becker, Nicolas; Krieger, Florian UL et al

in Intelligence (2020), 82

Scores of commonly administered intelligence tests such as figural matrices are important correlates of external criteria. However, evidence of improving intelligence test scores through practice or ... [more ▼]

Scores of commonly administered intelligence tests such as figural matrices are important correlates of external criteria. However, evidence of improving intelligence test scores through practice or coaching has been reported. Moreover, information about intelligence tests is widely and easily accessible (e.g., online tutorial videos). An open research question is whether watching such a video increases figural matrices test scores and affects the correlation with other intelligence tests. In two experiments (experiment 1: N = 112 psychology students; experiment 2: N = 229 teacher-education students), students were randomly assigned to either an experimental group that watched a short video (< 14 min) explaining a set of rules underlying figural matrices or a control group that watched a task irrelevant video of comparable duration. Afterwards, both groups worked on figural matrices. Prior to watching the video, all students completed an intelligence test. Results showed (1) substantially higher figural matrices mean test scores in the experimental groups compared to the control groups (d ≥ 1.19) and (2) substantial correlations between figural matrix test scores and intelligence test scores in both the experimental and the control groups. These correlations were of comparable magnitude and did not differ between the groups (experiment 1: r ≈ .55; experiment 2: r ≈ .40). Implications of these findings are discussed. [less ▲]

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See detailUsing process data to explain group differences in complex problem solving
Eichmann, B; Goldhammer, F; Greiff, Samuel UL et al

in Journal of Educational Psychology (2020), 122

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See detailTackling Large-Scale and Combinatorial Bi-Level Problems With a Genetic Programming Hyper-Heuristic
Kieffer, Emmanuel UL; Danoy, Grégoire UL; Brust, Matthias R. UL et al

in IEEE Transactions on Evolutionary Computation (2020), 24(1), 44--56

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See detailBorder controls versus European solidarity
Sommarribas, Adolfo UL; Nienaber, Birte UL

in Mein, Georg; Pause, Johannes (Eds.) Self and Society in the Corona Crisis: Perspectives from the Humanities and Social Sciences (2020)

The COVID- 19 crisis led to an asymmetric response from the European Union Member States. This was shown by the closure of the internal borders inside the Schengen area. In order to justify this action ... [more ▼]

The COVID- 19 crisis led to an asymmetric response from the European Union Member States. This was shown by the closure of the internal borders inside the Schengen area. In order to justify this action, Member States advanced the argument of protection the public health of their national population leaving aside the solidarity that Member States should have demonstrated during a time of crisis. This article is therefore dealing with the notion of solidarity in times of temporary border re-establishments. [less ▲]

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See detailExploring behavioral patterns during complex problem solving
Eichmann, B; Goldhammer, F; Greiff, Samuel UL et al

in Journal of Computer Assisted Learning (2020), 36

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See detailExamining gender differentials in the association of low control work with cognitive performance in older workers
Ford, Katherine Joy UL; Batty, G. David; Leist, Anja UL

in European Journal of Public Health (2020)

Background: Limited workplace control, an important dimension of job strain, can reduce occupational opportunities for problem solving and learning. Women may have fewer professional resources to mitigate ... [more ▼]

Background: Limited workplace control, an important dimension of job strain, can reduce occupational opportunities for problem solving and learning. Women may have fewer professional resources to mitigate effects of low control, while conversely, gender-role norms may moderate the influence of occupational psychosocial risk factors. We therefore examined if the links between control and cognitive function were similarly gendered. Methods: This observational, longitudinal study included respondents of the Survey of Health, Ageing and Retirement in Europe who were aged 50-64 years at entry, employed, and provided at least two measurements of control and cognition (n=6,697). Relationships between control and cognition, quantified with standardised scores from verbal fluency, immediate and delayed word recall tests, were explored using linear fixed-effect and random-effect models with gender interactions. Results: Consistent trends of improved verbal fluency performance with high control were evident across analyses, equal to producing around three-quarters of a word more under high control conditions, with an effect size roughly equal to 0.1 standard deviation units (fully adjusted models, range 0.077-0.104 SD), although associations with recall tests were inconsistent. We did not find evidence of clear gender differences in control–cognition relationships for any of the cognitive domains. Conclusions: The cognitive health of older European workers may benefit from improved workplace control irrespective of gender. Possible sources of bias that could explain the lack of gender differences are discussed, particularly gender differences in labour force participation, response behaviour in job control ratings, and implications of gender-role norms on the importance of occupational risk factors. [less ▲]

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See detailJust because they say it is sustainable development, it does not mean that it is: Sustainable development as a master-signifier in Swiss urban and regional planning
Carr, Constance UL

E-print/Working paper (2020)

With stunning green landscapes, exemplary public transport, and picturesque walkable cities, Switzerland often occupies the public imaginary of a place that has tackled sustainable development. This ... [more ▼]

With stunning green landscapes, exemplary public transport, and picturesque walkable cities, Switzerland often occupies the public imaginary of a place that has tackled sustainable development. This research, however, looks under the hood and finds that this development path supports not only modes of capital accumulation, but also certain less sustainable patterns of development and governance. This paper examines this apparent paradox by looking at the role of sustainable development as a master-signifier in Swiss urban development processes. Empirical observations were made in the Glatt Valley of Switzerland, where governing officials of small municipalities are confronted with coordinating urban development under growth pressure within cantonal and federal policy frameworks that claim sustainable development. It can be seen that sustainable development is an empty master-signifier that policy makers engage to justify the quilting of a certain hegemonic discourses of power that reflect in further uneven urban development. By reproducing business as usual market-led urban growth, fragmentation is maintained as are social spatial disparities are entrenched. [less ▲]

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See detailDescriptive, predictive, and explanatory personality research. Different goals, different approaches, but a shared need to move beyond the Big Few traits
Möttus, R; Wood, D; Condon, D et al

in European Journal of Personality (2020), 34

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See detailInstitutional Logics in the Global Higher Education Landscape: Differences in Organizational Characteristics by Sector and Founding Era
Buckner, Elizabeth; Zapp, Mike UL

in Minerva: A Review of Science, Learning and Policy (2020)

This article examines patterns in the global higher education landscape associated with sector (i.e., public or private) and founding era. Using data on the formal and academic structure of 15,133 higher ... [more ▼]

This article examines patterns in the global higher education landscape associated with sector (i.e., public or private) and founding era. Using data on the formal and academic structure of 15,133 higher education institutions (ISCED 6+) from 183 countries and territories, we examine factors associated with the student body size, number of degree-granting programs, doctorate degrees, and curricular offerings. We find that only sector and age are associated with an institution’s student body size, while sector, age, and founding era are all associated with degree and curricular offerings. Private universities tend to be smaller and are more likely to offer business degrees, while public universities offer more degree programs on average, and are more likely to offer programs in science and technology and doctoral degrees. Meanwhile, in both sectors, universities founded after 1990 are less likely to offer doctoral degrees and more likely to offer degrees in business, science, and technology. Despite some regional variation, these trends are found worldwide. To interpret these findings, we argue that both sector- and era-specific institutional logics link higher education to knowledge production and the labor market in distinct and path-dependent ways. Notably, the expansion of higher education post- 1990 has been accomplished by establishing new teaching-focused institutions and orienting academic programs to the labor market in both sectors. [less ▲]

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See detailEditorial: Digitale Praktiken
Pause, Johannes UL; Walkowski, Niels-Oliver UL; Vonderau, Patrick

in Montage AV (2020), 29(1), 5-20

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See detailConstant-Envelope Precoding for Satellite Systems
Tsinos, Christos; Arora, Aakash UL; Ottersten, Björn UL

in Proc. 2020 IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP) (2020)

In this paper, Constant-Envelope Precoding techniques are presented for satellite-based communication systems. In the developed transmission technique the signals of the antennas are designed to be of ... [more ▼]

In this paper, Constant-Envelope Precoding techniques are presented for satellite-based communication systems. In the developed transmission technique the signals of the antennas are designed to be of constant amplitude, improving the robustness of the latter to the non-linear distortions on satellite systems, introduced by the employed on-board Traveling-Wave-Tube-Amplifiers. We consider the forward link of a multi-beam broadband satellite system where the aim is to design the signals at the gateway such that the desired symbols are transmitted to the intended user terminals and the transmitted signals from the satellite terminal are of constant amplitude. At first, the gateway signals are designed given that a fixed on-board beamformer is applied to the satellite terminal. Then, the case of an adaptive on-board beamformer is considered which is designed jointly with the gateway signals. The design of the gateway signals and the adaptive on-board beamformer, in the second case, requires solving difficult nonconvex problems. Efficient algorithmic solutions are developed based on the saddle point method. The effectiveness of the proposed approaches is verified via numerical results. [less ▲]

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See detailThe benefits of a Bayesian analysis for the characterization of magnetic nanoparticles
Bersweiler, Mathias UL; Rubio, Helena Gavilan; Honecker, Dirk UL et al

in Nanotechnology (2020), 31(43), 435704

Magnetic nanoparticles offer a unique potential for various biomedical applications, but prior to commercial usage a standardized characterization of their structural and magnetic properties is required ... [more ▼]

Magnetic nanoparticles offer a unique potential for various biomedical applications, but prior to commercial usage a standardized characterization of their structural and magnetic properties is required. For a thorough characterization, the combination of conventional magnetometry and advanced scattering techniques has shown great potential. In the present work, we characterize a powder sample of high-quality iron oxide nanoparticles that are surrounded with a homogeneous thick silica shell by DC magnetometry and magnetic small-angle neutron scattering (SANS). To retrieve the particle parameters such as their size distribution and saturation magnetization from the data, we apply standard model fits of individual data sets as well as global fits of multiple curves, including a combination of the magnetometry and SANS measurements. We show that by combining a standard least-squares fit with a subsequent Bayesian approach for the data refinement, the probability distributions of the model parameters and their cross correlations can be readily extracted, which enables a direct visual feedback regarding the quality of the fit. This prevents an overfitting of data in case of highly correlated parameters and renders the Bayesian method as an ideal component for a standardized data analysis of magnetic nanoparticle samples. [less ▲]

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See detailThe Single Supervisory Mechanism: Institutional Design, Punitive Powers and the Interplay with Criminal Law
Allegrezza, Silvia UL

in Allegrezza, Silvia (Ed.) The Enforcement Dimension of the Single Supervisory Mechanism (2020)

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See detailDimensions and Categories for a Physical Activity Label for Schools in Europe: a Pilot Study in Luxembourg
Heck, Sandra UL; Scheuer, Claude UL

in AUC Kinanthropologica (2020), 56(1), 19-27

In the frame of the European Physical Activity Label for Schools (Eu-PALS, 2020a) project diverse indicators of physical activity, physical education and sport in different European schools have been ... [more ▼]

In the frame of the European Physical Activity Label for Schools (Eu-PALS, 2020a) project diverse indicators of physical activity, physical education and sport in different European schools have been analysed. As a starting point, this paper is presenting the chosen indicators and comparing them to an already existing physical activity label for schools in Luxembourg. The choice of the quality criteria in the Eu-PALS project, which may lead to the awarding of the label, are further discussed by demonstrating the results of a pilot study at four schools in Luxembourg. This national pilot study shows not only to the participating schools in which areas they might need to improve their activities, but allows also more generally to evaluate the indicators and possibly to improve the choice. Finally, with regard to the topic of the CEREPS Conference 2019 in Prague – “Quality criteria and outcome standards for Physical Education and School Sport” – in the frame of which this study has been presented, it is also discussed whether the project contributes to make criteria and outcome standards of physical education and school sport in Europe visible and comparable. [less ▲]

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See detailIntroduction
Allegrezza, Silvia UL

in Allegrezza, Silvia (Ed.) The Enforcement Dimension of the Single Supervisory Mechanism (2020)

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See detailUpdate für die Hermeneutik. Geschichtswissenschaft auf dem Weg zur digitalen Forensik?
Fickers, Andreas UL

in Zeithistorische Forschungen (2020), 17(1), 157-168

»[…] wenn ›die Quelle‹ die Reliquie historischen Arbeitens ist – nicht nur Überbleibsel, sondern auch Objekt wissenschaftlicher Verehrung –, dann wäre analog ›das Archiv‹ die Kirche der ... [more ▼]

»[…] wenn ›die Quelle‹ die Reliquie historischen Arbeitens ist – nicht nur Überbleibsel, sondern auch Objekt wissenschaftlicher Verehrung –, dann wäre analog ›das Archiv‹ die Kirche der Geschichtswissenschaft, in der die heiligen Handlungen des Suchens, Findens, Entdeckens und Erforschens vollzogen werden.« Achim Landwehr wirft in seinem geschichtstheoretischen Essay den Historikern ihren »Quellenglauben« vor – diese Kritik ließe sich im digitalen Zeitalter leicht auf die Heilsversprechen der Apostel der »Big Data Revolution« übertragen. Zwar regen sich mittlerweile vermehrt Stimmen, die den »Wahnwitz« der digitalen Utopie in Frage stellen, doch wird der öffentliche Diskurs weiterhin von jener Revolutionsrhetorik dominiert, die standardmäßig als Begleitmusik neuer Technologien ertönt. Statt in der intellektuell wenig fruchtbaren Dichotomie von Gegnern und Befürwortern, »First Movers« und Ignoranten zu verharren, welche die Landschaft der »Digital Humanities« ein wenig überspitzt auch heute noch kennzeichnet, ist das Ziel dieses Beitrages eine praxeologische Reflexion, die den Einfluss von digitalen Infrastrukturen, digitalen Werkzeugen und digitalen »Quellen« auf die Praxis historischen Arbeitens zeigen möchte. Ausgehend von der These, dass ebenjene digitalen Infrastrukturen, Werkzeuge und »Quellen« heute einen zentralen Einfluss darauf haben, wie wir Geschichte denken, erforschen und erzählen, plädiert der Beitrag für ein »Update« der klassischen Hermeneutik in der Geschichtswissenschaft. Die kritische Reflexion über die konstitutive Rolle des Digitalen in der Konstruktion und Vermittlung historischen Wissens ist nicht nur eine Frage epistemologischer Dringlichkeit, sondern zentraler Bestandteil der Selbstverständigung eines Faches, dessen Anspruch als Wissenschaft sich auf die Methoden der Quellenkritik gründet. [less ▲]

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