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In einer digital geprägten Welt stehen Lehrkräfte vor zahllosen Herausforderungen bezüglich der Mediennutzung in ihrem Unterricht. Kinder und Jugendliche konsumieren Medien durch soziale Netzwerke, Messenger und vor allem in Form von Videos, Filmen und Serien. An der Goethe-Universität werden die aktuellen bildungspolitischen und gesellschaftlichen Forderungen nach medienkompetenten Lehrkräften u.a. in der ersten Phase der Ausbildung aufgegriffen. Im hier vorgestellten bildungswissenschaftlichen Seminar «Mediendidaktik im Kontext Schule» werden Studierende daher unter Anwendung der Methode «Lernen durch Lehren» zur Produktion eigener Erklärvideos in Kleingruppen angeleitet. Dadurch werden die Studierenden zu Expertinnen und Experten, während sie den Videoerstellungsprozess kennenlernen und Mediennutzungskompetenzen ausbilden. Durch die Verzahnung mit Feedbackschleifen und Reflexionsaufgaben als Teil des studentischen Portfolios wurde der bewusste und reflektierte Umgang mit Medien in der späteren Berufspraxis angestrebt. Die Lehrveranstaltung wurde prozessbegleitend und anhand eines Online-Fragebogens summativ evaluiert. Die Ergebnisse zeigen zwar den anhaltenden Bedarf zur Instruktion während der Medienproduktion, aber vor allem das Interesse an digitalen Medien. Die Studierenden erlebten den Lernprozess als leistungsmotivierend, produktiv und betonten die Relevanz der Themen und Ziele des Seminars für die spätere Berufspraxis. Zukünftige Lehrkräfte können in jeder Ausbildungsphase von Praxiserfahrung im Umgang mit digitalen Medien profitieren und sollten dahingehend weitere Angebote während des Studiums und darüber hinaus erhalten.
Um leitor de Walter Benjamin: dialética, interpretação e materialismo em Theodor W. Adorno, 1931-2
(2019)
O objetivo do artigo édiscutir a influência do livro Origem do drama trágico alemão(1928) de Walter Benjamin sobre duas preleções de Theodor W. Adorno na Universidade de Frankfurt, a saber: “A atualidade da filosofia” (1931) e “A ideia de história natural” (1932). Com isso, procurou-se, por um lado, indicar especificamente a influência benjaminiana sobre a ideia de constelação e, por outro, esclarecer as fundações histórico-filosóficas da ideia de história natural, que se encontram no centro das reflexões epistemológicas deAdorno. Dessa maneira, é possível compreender as concepções de dialética, interpretação e materialismo trabalhadas por Adorno com o propósito de caracterizar sua própria tarefa filosófica no início da década de 1930.
O artigo toma as críticas ao entrelaçamento entre direito e violência como um ponto de partida para explorar a possibilidade de um "tertiumdo direito". Desse modo, busca superar a suposição dicotômica básica que enxerga o direito sempre oscilando entre uma apologia à violência, de um lado, e uma utopia da razão, de outro. O texto analisa a possibilidade dessetertium, uma "força legal" além da violência legal e da razão legal, em quatro passos, recorrendo ao trabalho de Jacques Derrida e de autores da primeira geração da Escola de Frankfurt, em particular, de Theodor Adorno e Walter Benjamin. Argumenta que, em um primeiro passo, o direito precisa ser dissociado do Estado. A violência jurídica, entretanto, não se origina apenas do laço entre direito e poder de Estado. O direito é em si mesmo violento, mesmo quando não é direito de Estado. O segundo passo da crítica legal consiste, portanto, na recordação da violência do direito, seguido por um terceiro, que pede a transformação da violência em força. Essas três instâncias da crítica são as precondições para um passo último e essencial, de acordo com o qual a crítica do direito deve facilitar a transcendência da violência jurídica, tomando o direito e a sua promessa de justiça ao pé da letra com a finalidade de voltar essa promessa contra o próprio direito.
Promove-se uma recuperação do debate endógeno estabelecido entre alguns pensadores da Escola de Frankfurt, sobretudo no que se refere às diferentes perspectivas de análise sobre as relações entre ação e estrutura social, bem como as distintas percepções acerca das racionalidades (prática ou comunicativa) que organizam a conexão entre os indivíduos e a sociedade. Verifica-se o modo como os autores ligados à teoria crítica compreenderam as relações entre esferas subjetivas e estruturais em termos de possibilidades de emancipação social e de exercício de práticas deliberativas. Nessa perspectiva, considera-se uma cisão teórica estabelecida no interior da própria escola, cuja expressão se dá a partir das diferenças epistemológicas existentes entre o núcleo central do pensamento frankfurtiano e um conjunto de autores periféricos. Os trabalhos produzidos por esse núcleo “marginal”, bem como seu posterior refinamento na obra de Habermas, apresentam alternativas teóricas de caráter relacional que contrapõem a visão estrutural e cética presente nos trabalhos de Horkheimer, Adorno e Marcuse. É justamente na recuperação dessas fronteiras endógenas que se pretende ponderar as possíveis contribuições do pensamento frankfurtiano para uma perspectiva crítica da sociedade contemporânea.
Failed jump landings represent a key mechanism of musculoskeletal trauma. It has been speculated that cognitive dual-task loading during the flight phase may moderate the injury risk. This study aimed to explore whether increased visual distraction can compromise landing biomechanics. Twenty-one healthy, physically active participants (15 females, 25.8 ± 0.4 years) completed a series of 30 counter-movement jumps (CMJ) onto a capacitive pressure platform. In addition to safely landing on one leg, they were required to memorize either one, two or three jersey numbers shown during the flight phase (randomly selected and equally balanced over all jumps). Outcomes included the number of recall errors as well as landing errors and three variables of landing kinetics (time to stabilization/TTS, peak ground reaction force/pGRF, length of the centre of pressure trace/COPT). Differences between the conditions were calculated using the Friedman test and the post hoc Bonferroni-Holm corrected Wilcoxon test. Regardless of the condition, landing errors remained unchanged (p = .46). In contrast, increased visual distraction resulted in a higher number of recall errors (chi² = 13.3, p = .001). Higher cognitive loading, furthermore, appeared to negatively impact mediolateral COPT (p < .05). Time to stabilization (p = .84) and pGRF (p = .78) were unaffected. A simple visual distraction in a controlled experimental setting is sufficient to adversely affect landing stability and task-related short-term memory during CMJ. The ability to precisely perceive the environment during movement under time constraints may, hence, represent a new injury risk factor and should be investigated in a prospective trial.
Tropical cyclones (TC) represent a substantial threat to life and property for Caribbean and adjacent populations. The prospective increase of TC magnitudes, expressed in the 15th chapter of the IPCC AR5 report, entails a rising probability of ecological and social disasters, which were tragically exemplified by several severe Caribbean TC strikes during the past 20 years. Modern IPCC-grade climate models, however, still lack the required spatial and temporal resolution to accurately consider the underlying boundary conditions that modulate long-time TC patterns beyond the Instrumental Era. It is thus necessary to provide a synoptic mechanistic understanding regarding the origin of such long-time patterns, in order to predict reliable changes of TC magnitude and frequency under future climate scenarios. Caribbean TC records are still rare and often lack the necessary continuity and resolution to overcome these limitations. Here, we report on an annually-resolved sedimentary archive from the bottom of the Great Blue Hole (Lighthouse Reef, Belize). The TC record encompasses 1885 years and extends all existing site-specific TC archives both in terms of resolution and duration. We identified a likely connection between long-term TC patterns and climate phenomena responses to Common Era climate variations and offer a conceptual and comparative view considering several involved tropospheric and oceanographic control mechanisms such as the El-Niño-Southern-Oscillation, the North Atlantic Oscillation and the Atlantic Multidecadal Oscillation. These basin-scaled climate modes exercise internal control on TC activity by modulating the thermodynamic environment (sea-surface temperature and vertical wind shear stress dynamics) for enhanced/suppressed TC formation both on millennial (primary) and multi-decadal (secondary) time scales. We interpret the beginning of the Medieval Warm Period (MWP) as an important time interval of the Common Era record and suspect that the southward migration of the intertropical convergence zone (ITCZ) caused, in combination with extensive hydro-climate changes, a shift in the tropical Atlantic TC regime. The TC activity in the south-western Caribbean changed in general from a stable and less active stage (100–900 CE) to a more active and variable state (1,100 CE-modern).
This work presents, to our knowledge, the first completely passive imaging with human-body-emitted radiation in the lower THz frequency range using a broadband uncooled detector. The sensor consists of a Si CMOS field-effect transistor with an integrated log-spiral THz antenna. This THz sensor was measured to exhibit a rather flat responsivity over the 0.1–1.5-THz frequency range, with values of the optical responsivity and noise-equivalent power of around 40 mA/W and 42 pW/√Hz, respectively. These values are in good agreement with simulations which suggest an even broader flat responsivity range exceeding 2.0 THz. The successful imaging demonstratestheimpressivethermalsensitivitywhichcanbeachievedwithsuchasensor. Recording of a 2.3×7.5-cm2-sized image of the fingers of a hand with a pixel size of 1 mm2 at a scanning speed of 1 mm/s leads to a signal-to-noise ratio of 2 and a noise-equivalent temperature difference of 4.4 K. This approach shows a new sensing approach with field-effect transistors as THz detectors which are usually used for active THz detection.
The purpose of this study consists of the identification of implantologic and prosthetic methods and techniques used in substance loss rehabilitation, associated with identifying the specific biomaterials in perfect accordance with each case particularities, without leaving aside the bone-tissue deficiency etiology. A representative number of clinical cases were selected, cases which are relevant for the chosen theme. The possibility of reconstructing the natural parameters of the edentulous alveolar ridge areas is various, starting with augmentation materials of the autogenous and heterograft type biomaterials(Bio-Oss, Grafton, Cerasorb si MBCP) including the mixing of these two types of biomaterials, and going to epitheses, which are the best choise for complex substance loss.
Programele computerizate au un rol indiscutabil în atingerea unor standarde ridicate în procesul educațional. Pe de altă parte acestea sunt instrumente eficiente în identificarea particularităților cazurilor clinice, evaluarea acestora în conformitate cu indicii clinico-biologici specifici. În timpul procesului didactic, simularea are un rol esenţial, ca o prefaţă la procedurile practice care formează abilităţile practice pe fiecare entitate clinică în medicina dentară.