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"Ich habe nichts zu verstecken ... oder doch?!" - Ein Praxisleitfaden zur Diskussion in der Klasse
(2020)
Durch das Zusammenspiel von Big Data und künstlicher Intelligenz eröffnen sich ganz neue Möglichkeiten, auch im Bereich der öffentlichen Sicherheit. Immer mehr Städte weltweit machen davon Gebrauch und setzen auf Kameras mit computergesteuerter Gesichtserkennung. Nicht jeder ist damit einverstanden. Wie kann man die aktuelle gesellschaftliche Debatte um öffentliche Sicherheit und Privatsphäre mit Jugendlichen besprechen?
Soil degradation due to erosion is a significant worldwide problem at different spatial (from pedon to watershed) and temporal scales. All stages and factors in the erosion process must be detected and evaluated to reduce this environmental issue and protect existing fertile soils and natural ecosystems. Laboratory studies using rainfall simulators allow single factors and interactive effects to be investigated under controlled conditions during extreme rainfall events. In this study, three main factors (rainfall intensity, inclination, and rainfall duration) were assessed to obtain empirical data for modeling water erosion during single rainfall events. Each factor was divided into three levels (− 1, 0, + 1), which were applied in different combinations using a rainfall simulator on beds (6 × 1 m) filled with soil from a study plot located in the arid Sistan region, Iran. The rainfall duration levels tested were 3, 5, and 7 min, the rainfall intensity levels were 30, 60, and 90 mm/h, and the inclination levels were 5, 15, and 25%. The results showed that the highest rainfall intensity tested (90 mm/h) for the longest duration (7 min) caused the highest runoff (62 mm3/s) and soil loss (1580 g/m2/h). Based on the empirical results, a quadratic function was the best mathematical model (R2 = 0.90) for predicting runoff (Q) and soil loss. Single-factor analysis revealed that rainfall intensity was more influential for runoff production than changes in time and inclination, while rainfall duration was the most influential single factor for soil loss. Modeling and three-dimensional depictions of the data revealed that sediment production was high and runoff production lower at the beginning of the experiment, but this trend was reversed over time as the soil became saturated. These results indicate that avoiding the initial stage of erosion is critical, so all soil protection measures should be taken to reduce the impact at this stage. The final stages of erosion appeared too complicated to be modeled, because different factors showed differing effects on erosion.
Auf dem Friedhof der Kirche St. Matthias im Süden Triers befinden sich vier Kammern, die bis in jüngste Zeit als die Untergeschosse selbstständiger römischer Grabbauten angesprochen wurden. Bei dem Areal handelte es sich um einen Teil der südlichen Nekropole des römischen Triers, der vor allem mit Körperbestattungen belegt worden ist. Dieses Körpergräberfeld wird in der vorliegenden Arbeit zum ersten Mal anhand der archäologischen Funde und Befunde beschrieben.
Nach früheren, kleineren Untersuchungen fanden im Umfeld der Kammern 1931 umfangreiche Grabungen statt; weitere folgten in den 1960er Jahren. Die im Rahmen dieser Maßnahmen erstellten Unterlagen wurden vom Autor zusammengestellt und aufgearbeitet. Ergänzend kamen eigene Beobachtungen am noch sichtbaren Befund hinzu.
So ließ sich erschließen, dass die meisten Grabkammern nicht Reste eigenständiger Bauten waren, sondern Teile eines bisher nicht erkannten größeren Baukomplexes. Dieser bestand aus einem großen Rechteckbau, der das Untergeschoss eines älteren Grabbaus inkorporierte. Dieser bildete einen kellerartigen Raum, der mit einem Wasseranschluss versehen war. Innerhalb des Rechteckbaus konnten Reste eines festen Fußbodens zu ebener Erde, sowie farbige Wandmalerei beobachtet werden. Kurz nach seiner Errichtung wurde der Rechteckbau mit zwei unterirdischen Kammern versehen und im Osten durch drei Anbauten mit unterschied-lichen Grundrissen erweitert: Im Süden entstand so ein Apsidenbau mit einer großen unterirdischen Kammer, in der sich bis heute ein Reliefsarkophag befindet.
Die Befundauswertung ergab, dass der Baukomplex in konstantinischer Zeit errichtet worden ist und offenbar schon um die Mitte des 5.Jhs. n. Chr. aufgegeben wurde.
Zu diesem Baubefund ließ sich in den benachbarten römischen Provinzen keine direkte Parallele finden. Am ehesten vergleichbar scheint ein weiterer Baukomplex aus der nördlichen Nekropole Triers, der unter der Kirche St. Maximin aufgedeckt wurde. Er ist ab der Mitte des 4. Jhs. n. Chr. errichtet und von der christlichen Gemeinde genutzt worden. Dieser Bau ähnelt in seinem Grundriss dem Baukomplex von St. Matthias, unterschiedet sich aber in der Bestattungspraxis: Während zahlreiche Sarkophag-Bestattungen im Hauptbau und teilweise auch den Anbauten in den unbefestigten Boden eingelassen worden sind, fand sich bei St. Matthias sowohl im Hauptbau als auch den Anbauten ein fester Boden. Innerhalb dieses Baukomplexes kann nur der oben beschriebene Reliefsarkophag der Nutzungszeit zugeordnet werden. Demnach könnte hier die Schaffung separater Bestattungsräume bedeutsam gewesen sein – neben anderen Funktionen, wie der Bereitstellung von Wasser und überdachtem Raum zur Begehung der Totenfeiern. Die stärkere Berücksichtigung solch funktionaler Elemente scheint demnach eine wichtige Ergänzung zur weiterführenden Deutung römischer Sepulkralarchitektur zu sein.
Designing a Randomized Trial with an Age Simulation Suit—Representing People with Health Impairments
(2020)
Due to demographic change, there is an increasing demand for professional care services, whereby this demand cannot be met by available caregivers. To enable adequate care by relieving informal and formal care, the independence of people with chronic diseases has to be preserved for as long as possible. Assistance approaches can be used that support promoting physical activity, which is a main predictor of independence. One challenge is to design and test such approaches without affecting the people in focus. In this paper, we propose a design for a randomized trial to enable the use of an age simulation suit to generate reference data of people with health impairments with young and healthy participants. Therefore, we focus on situations of increased physical activity.
Phylogeographic analyses point to long-term survival on the spot in micro-endemic Lycian salamanders
(2020)
Lycian salamanders (genus Lyciasalamandra) constitute an exceptional case of microendemism of an amphibian species on the Asian Minor mainland. These viviparous salamanders are confined to karstic limestone formations along the southern Anatolian coast and some islands. We here study the genetic differentiation within and among 118 populations of all seven Lyciasalamandra species across the entire genus’ distribution. Based on circa 900 base pairs of fragments of the mitochondrial 16SrDNA and ATPase genes, we analysed the spatial haplotype distribution as well as the genetic structure and demographic history of populations. We used 253 geo-referenced populations and CHELSA climate data to infer species distribution models which we projected on climatic conditions of the Last Glacial Maximum (LGM). Within all but one species, distinct phyloclades were identified, which only in parts matched current taxonomy. Most haplotypes (78%) were private to single populations. Sometimes population genetic parameters showed contradicting results, although in several cases they indicated recent population expansion of phyloclades. Climatic suitability of localities currently inhabited by salamanders was significantly lower during the LGM compared to recent climate. All data indicated a strong degree of isolation among Lyciasalamandra populations, even within phyloclades. Given the sometimes high degree of haplotype differentiation between adjacent populations, they must have survived periods of deteriorated climates during the Quaternary on the spot. However, the alternative explanation of male biased dispersal combined with a pronounced female philopatry can only be excluded if independent nuclear data confirm this result.
This work studies typical mathematical challenges occurring in the modeling and simulation of manufacturing processes of paper or industrial textiles. In particular, we consider three topics: approximate models for the motion of small inertial particles in an incompressible Newtonian fluid, effective macroscopic approximations for a dilute particle suspension contained in a bounded domain accounting for a non-uniform particle distribution and particle inertia, and possibilities for a reduction of computational cost in the simulations of slender elastic fibers moving in a turbulent fluid flow.
We consider the full particle-fluid interface problem given in terms of the Navier-Stokes equations coupled to momentum equations of a small rigid body. By choosing an appropriate asymptotic scaling for the particle-fluid density ratio and using an asymptotic expansion for the solution components, we derive approximations of the original interface problem. The approximate systems differ according to the chosen scaling of the density ratio in their physical behavior allowing the characterization of different inertial regimes.
We extend the asymptotic approach to the case of many particles suspended in a Newtonian fluid. Under specific assumptions for the combination of particle size and particle number, we derive asymptotic approximations of this system. The approximate systems describe the particle motion which allows to use a mean field approach in order to formulate the continuity equation for the particle probability density function. The coupling of the latter with the approximation for the fluid momentum equation then reveals a macroscopic suspension description which accounts for non-uniform particle distributions in space and for small particle inertia.
A slender fiber in a turbulent air flow can be modeled as a stochastic inextensible one-dimensionally parametrized Kirchhoff beam, i.e., by a stochastic partial differential algebraic equation. Its simulations involve the solution of large non-linear systems of equations by Newton's method. In order to decrease the computational time, we explore different methods for the estimation of the solution. Additionally, we apply smoothing techniques to the Wiener Process in order to regularize the stochastic force driving the fiber, exploring their respective impact on the solution and performance. We also explore the applicability of the Wiener chaos expansion as a solution technique for the simulation of the fiber dynamics.
This study investigated correlative, factorial, and structural relationships between scores for ability emotional intelligence in the workplace (measured with the Geneva Emotional Competence Test), as well as fluid and crystallized abilities (measured with the Intelligence Structure Battery), carried out by a 188-participant student sample. Confirming existing research, recognition, understanding, and management of emotions were related primarily to crystallized ability tests measuring general knowledge, verbal fluency, and knowledge of word meaning. Meanwhile, emotion regulation was the least correlated with any other cognitive or emotional ability. In line with research on the trainability of emotional intelligence, these results may support the notion that emotional abilities are subject to acquired knowledge, where situational (i.e., workplace-specific) emotional intelligence may depend on accumulating relevant experiences.
Roof and wall slates are fine-grained rocks with slaty cleavage, and it is often difficult to determine their mineral composition. A new norm mineral calculation called slatecalculation allows the determination of a virtual mineral composition based on full chemical analysis, including the amounts of carbon dioxide (CO2), carbon (C), and sulfur (S). Derived norm minerals include feldspars, carbonates, micas, hydro-micas, chlorites, ore-minerals, and quartz. The mineral components of the slate are assessed with superior accuracy compared to the petrographic analysis based on the European Standard EN 12326. The inevitable methodical inaccuracies in the calculations are limited and transparent. In the present paper, slates, shales, and phyllites from worldwide occurrences were examined. This also gives an overview of the rocks used for discontinuous roofing and external cladding.
In der Vorrede zur ersten Auflage von Die Welt als Wille und Vorstellung legt Arthur Schopenhauer dem Leser seines Werkes seine Absicht nahe, welche in der Mitteilung eines „einzigen Gedankens“ besteht. Doch dieser mitzuteilende Gedanke wird an keiner Stelle des Werkes explizit und direkt als solchen von Schopenhauer ausgesprochen und genannt. Dies gibt bis heute in der Schopenhauer-Forschung Anlass zu kontroversen Auseinandersetzungen: Wie lautet Schopenhauers „einziger Gedanke“? Wo befindet er sich konkret? Und ist er überhaupt mitteilbar?
Trotz zahlreicher Forschungsarbeiten zur Thematik des „einzigen Gedankens“ wurde bisher der Einfluss der indischen Philosophie, genauer des Oupnek’hat, vernachlässigt, obwohl genauestens nachgewiesen und nachgezeichnet werden kann, mit welchen Quellen sich Schopenhauer zum Zeitpunkt der Entstehung seiner Philosophie intensiv beschäftigt hat. Auch verweist er selbst immer wieder auf bestimmte Stellen aus dem Oupnek’hat und zitiert Passagen an ganz wesentlichen Stellen in seinem Werk.
Um den „einzigen Gedanken“ im Werk Schopenhauers erfassen zu können, reicht es nicht aus, nur vom Hauptwerk selbst auszugehen, sondern es müssen ebenfalls die Jahre und Schriften während der Entstehung seiner Philosophie bis zum Hauptwerk berücksichtigt werden, und damit verbunden auch die Quellen, die Schopenhauer beeinflusst haben, wozu insbesondere das Oupnek’hat samt seinen eigenen Randnotizen gehört.
The nonhydrostatic regional climate model CCLM was used for a long-term hindcast run (2002–2016) for the Weddell Sea region with resolutions of 15 and 5 km and two different turbulence parametrizations. CCLM was nested in ERA-Interim data and used in forecast mode (suite of consecutive 30 h long simulations with 6 h spin-up). We prescribed the sea ice concentration from satellite data and used a thermodynamic sea ice model. The performance of the model was evaluated in terms of temperature and wind using data from Antarctic stations, automatic weather stations (AWSs), an operational forecast model and reanalyses data, and lidar wind profiles. For the reference run we found a warm bias for the near-surface temperature over the Antarctic Plateau. This bias was removed in the second run by adjusting the turbulence parametrization, which results in a more realistic representation of the surface inversion over the plateau but resulted in a negative bias for some coastal regions. A comparison with measurements over the sea ice of the Weddell Sea by three AWS buoys for 1 year showed small biases for temperature around ±1 K and for wind speed of 1 m s−1. Comparisons of radio soundings showed a model bias around 0 and a RMSE of 1–2 K for temperature and 3–4 m s−1 for wind speed. The comparison of CCLM simulations at resolutions down to 1 km with wind data from Doppler lidar measurements during December 2015 and January 2016 yielded almost no bias in wind speed and a RMSE of ca. 2 m s−1. Overall CCLM shows a good representation of temperature and wind for the Weddell Sea region. Based on these encouraging results, CCLM at high resolution will be used for the investigation of the regional climate in the Antarctic and atmosphere–ice–ocean interactions processes in a forthcoming study.
In order to investigate the psychobiological consequences of acute stress under laboratory conditions, a wide range of methods for socially evaluative stress induction have been developed. The present dissertation is concerned with evaluating a virtual reality (VR)-based adaptation of one of the most widely used of those methods, the Trier Social Stress Test (TSST). In the three empirical studies collected in this dissertation, we aimed to examine the efficacy and possible areas of application of the adaptation of this well-established psychosocial stressor in a virtual environment. We found that the TSST-VR reliably incites the activation of the major stress effector systems in the human body, albeit in a slightly less pronounced way than the original paradigm. Moreover, the experience of presence is discussed as one potential factor of influence in the origin of the psychophysiological stress response. Lastly, we present a use scenario for the TSST-VR in which we employed the method to investigate the effects of acute stress on emotion recognition performance. We conclude that, due to its advantages concerning versatility, standardization and economic administration, the paradigm harbors enormous potential not only for psychobiological research, but other applications such as clinical practice as well. Future studies should further explore the underlying effect mechanisms of stress in the virtual realm and the implementation of VR-based paradigms in different fields of application.
The object of the current Thematic Issue is not to focus on the individuals (the cross-border commuters) but on the organization of the cross-border labor markets. We move from a micro perspective to a macro perspective in order to underline the diversity of the cross-border labor markets (at the French borders, for example) and shed light on the many aspects that impact cross-border supply or demand. Trying to understand the whole system that goes beyond the cross-border flows, the question we address in this thematic issue is about the organization of the labor markets: is the system organized in a cross-border way? Or do the borders still prevent a genuinely integrated cross-border labor market?
Die Praxishefte Demokratische Schulkultur erscheinen halbjährlich und bieten Schulleitungen und Schulpersonal theoretische Grundlagen und praxisorientierte Anleitungen zur demokratiepädagogischen Schulentwicklung.
Jedes Themenheft ist jeweils einer demokratiepädagogischen Bauform oder strategischen Frage der Schulentwicklung gewidmet. Die Praxishefte werden allen Luxemburger Schulen als Printausgabe zur Verfügung gestellt und online mit zusätzlichen Materialien und in französischer Fassung vorgehalten.
In the course of the COVID-19 pandemic, borders have become relevant (again) in political action and in people's everyday lives within a very short time. This was especially true for the inhabitants of border regions, whose cross-border life worlds were suddenly irritated by closed borders and police controls. However, the COVID-19 pandemic also led to an increased evidence of social, cultural, economic, health and mobility boundaries beyond national borders, which raised pressing questions about social inequalities. The authors shed light on these dynamics from the perspective of territorial borders, social boundaries and (dis)continuities in border regions through a variety of thematic and spatial approaches. The critical observations and scientific comments were made during the lockdown in April and May 2020 and provide insights into the events during the global pandemic.
Les carnets paraissent deux fois par an et offrent aux dirigeant(e)s des écoles ainsi qu’au personnel des fondements théoriques et du matériel pratique pour la mise en oeuvre d’un développement scolaire démocratique. Chaque publication traite d’une méthode de l’éducation à la démocratie ou d’une question stratégique du développement scolaire. Les carnets en langue allemande sont mis à la disposition des écoles luxembourgeoises en version imprimée. L’ensemble du matériel ainsi que la version en langue française sont disponibles en ligne.
mateneen - Démocratie à l'école 04/2020 : L'éducation à la démocratie dans la société numérique
(2020)
Les carnets paraissent deux fois par an et offrent aux dirigeant(e)s des écoles ainsi qu’au personnel des fondements théoriques et du matériel pratique pour la mise en oeuvre d’un développement scolaire démocratique. Chaque publication traite d’une méthode de l’éducation à la démocratie ou d’une question stratégique du développement scolaire. Les carnets en langue allemande sont mis à la disposition des écoles luxembourgeoises en version imprimée. L’ensemble du matériel ainsi que la version en langue française sont disponibles en ligne.
Die Praxishefte Demokratische Schulkultur erscheinen halbjährlich und bieten Schulleitungen und Schulpersonal theoretische Grundlagen und praxisorientierte Anleitungen zur demokratiepädagogischen Schulentwicklung. Jedes Themenheft ist jeweils einer demokratiepädagogischen Bauform oder strategischen Frage der Schulentwicklung gewidmet. Die Praxishefte werden allen Luxemburger Schulen als Printausgabe zur Verfügung gestellt und online mit zusätzlichen Materialien und in französischer Fassung vorgehalten.
B/ordering the Anthropocene: Inter- and Transdisciplinary Perspectives on Nature-Culture Relations
(2020)
In and with this thematic issue we would like to invite you to engage in productive boundary work and to critically examine the relationship between nature and culture in the Anthropocene. A few years ago, the term Anthropocene was proposed by Paul Crutzen as a term for the current geological epoch, in which humankind (the ‘anthropos’) is seen as the central driving force for global changes in ecological systems. This epoch is characterized by the blurring of boundaries between society and nature, science and politics, as well as by the increased drawing of boundaries between social groups, lifestyles, and the Global North and Global South. With this issue, we would like to give an impetus to explore boundary phenomena in the relationship between nature and society, which up to now have not been the focus of Border Studies. The challenges and problems of the Anthropocene require cross-border thinking and research that stimulates a new reflexivity and commitment, to which the multidisciplinary field of Border Studies can contribute.
In recent decades, Border Studies have gained importance and have seen a noticeable increase in development. This manifests itself in an increased institutionalization, a differentiation of the areas of research interest and a conceptual reorientation that is interested in examining processes. So far, however, little attention has been paid to questions about (inter)disciplinary self-perception and methodological foundations of Border Studies and the associated consequences for research activities. This thematic issue addresses these desiderata and brings together articles that deal with their (inter)disciplinary foundations as well as method(olog)ical and practical research questions. The authors also provide sound insights into a disparate field of work, disclose practical research strategies, and present methodologically sophisticated systematizations.