Multiplying media literacy?

Zur Förderung von Medienkompetenz und medienpädagogischer Kompetenz in der universitären Lehramtsausbildung wurde an der Justus-Liebig-Universität Gießen ein Lehrprojekt initiiert, das an der aktuellen technologischen Ausstattung von deutschen Schulen ansetzt. Als Zugang wurde die Technologie der interaktiven Whitebords gewählt, um gegenwärtige Entwicklungen der Digitalisierung von Unterrichtsräumen zu thematisieren und dabei ausgewählte Aspekte von Medienkompetenz zu fördern. In dem Projekt haben verschiedene Einrichtungen der Universität und der Lehrerbildung kooperiert, um eine Multiplikator/-innenschulung für Studierende zu erarbeiten und zu etablieren. Es wurde eine 28-stündige Qualifizierungsreihe entwickelt, die sich aus modularisierten Workshops zur medientechnischen und -didaktischen Auseinandersetzung mit interaktiven Whiteboards, Elementen der Tutor/-innenausbildung sowie der Erarbeitung eines eigenen Unterrichtsentwurfes zusammensetzt. In dem Artikel werden die entwickelten Module vorgestellt und bewertet, inwieweit sie den von Herzig, Aßmann und Klar (2014) formulierten Zielvorstellungen zur Medienkompetenzförderung für das Lehramtsstudium entsprechen. Im Abgleich mit diesen Zielvorstellungen werden Entwicklungspotentiale des Konzepts identifiziert. Darüber hinaus fliessen Ergebnisse der praktischen Durchführung in Optimierungsvorschläge zur Steigerung der Nachhaltigkeit und Qualität der didaktischen Kompetenzen zum Einsatz von interaktiven Whiteboards in der Lehramtsausbildung – und darüber vermittelt im Schulunterricht – ein.In order to improve media literacy and media education in university teacher training, the University of Giessen initiated a project that focuses on the current level of technical equipment at schools in Germany. Working with interactive whiteboards has been chosen as an approach to tackle the current development of digitalization of classrooms and to improve specific aspects of media competence. Various facilities cooperated to develop and establish a 28 hours training of disseminators consisting of multiple modules which cover media technology and didactics, training for tutors and the development of individual teaching concepts. The following article will introduce these modules and evaluate whether they meet the objectives for media competence development among student teachers as proposed by Herzig, Aßmann and Klar (2014). This evaluation provides important information for identifying the development potential the concept offers. Additionally, insights gained from the analysis of coursework can be utilised to develop recommendations for optimising the sustainability and the quality of teaching concepts for the use of interactive whiteboards in teacher education and, ultimately, teaching at schools

Epidemiologische, wachstumsregulatorische und ertragliche Effekte von Fungiziden gegenüber Phoma lingam ([Tode ex Fr.] Desm.) im Winterraps (Brassica napus L. var. napus)

In zweijährigen Untersuchungen (2004/2005, 2005/2006) (Sorte Talent) wurden neben der epidemiologischen Ausbreitung von Rapspathogenen die fungiziden und wachstumsregulatorischen Auswirkungen unterschiedlicher Präparate analysiert. Die Effekte von Fungiziden und des Wachstumsregulators Moddus gegenüber Phoma lingam und der Pflanzenmorphologie wiesen die dominierende Rolle des Erregers Phoma lingam in der Rapskultur nach. Die Fungizidapplikationen im Herbst und im Frühjahr konnten den Blattbefall (BSBBlatt) erheblich reduzieren. Die Reduktion des Wurzelhalsbefalles (BWWh) steht in engen Zusammenhang mit einem reduzierten Blattbefall (BSBBlatt, BHBBlatt) im Herbst, hervorgerufen durch die Herbstapplikation von Fungiziden. Ebenso war ein enger Zusammenhang zwischen dem Blattbefall (BSBBlatt, BHBBlatt) im Frühjahr und dem daraus resultierenden Stengelbefall (BWSt) festzustellen. Spezielle Ertrags-Verlust-Relationen zwischen dem Blatt- beziehungsweise Wurzelhals- und Stengelbefall hingegen bestanden nicht. Wachstumsregulatorische Effekte eingesetzter Fungizide auf die Sproßlänge waren nur unter deutlich wachstumsfördernden Bedingungen festzustellen. Es konnten signifikante Effekte durch die zur Blüte applizierten Fungizide auf die Schotenstabilität nachgewiesen werden. Der Wurzelhalsdurchmesser blieb durch alle Maßnahmen unbeeinflußt. Zusammenhänge zwischen der Sproßlänge, der signifikant erhöhten Schotenstabilität und dem Ertrag waren nicht festzustellen. Alleinige Blütenapplikationen beeinflußten die Ertragsleistung am deutlichsten. Die abnehmende Bedeutung von Sclerotinia sclerotiorum wurde bestätigt. Erzielte Ertragszuwächse nach ausschließlicher Blütenapplikation sind nicht auf die biologische Kontrolle des Erregers zurückzuführen. Weitere Krankheitserreger wie Verticillium longisporum und Peronospora parasitica traten als wirtschaftlich unbedeutende Begleitpathogene auf

Possible causes and consequences of philopatry and breeding dispersal in red-backed shrikes Lanius collurio

Studies of animal breeding dispersal have often focused on possible causes, whereas its adaptive significance has received less attention. Using an information-theoretic approach, we assessed predictions of four hypotheses relating to causes and consequences of breeding dispersal in a migratory passerine, the red-backed shrike Lanius collurio. As predicted by the reproductive performance hypothesis, probability of breeding dispersal in females (though not in males) decreased with increasing annual average number of fledglings produced in the past year, but there was no association with conspecific reproductive performance in either sex. The site choice hypothesis, stating that individuals disperse to improve breeding site quality, received support in males only, as dispersal probability was positively associated to a measure indicating low territory quality. The social constraints hypothesis, referring to dispersal in relation to intraspecific interactions, received little support in either sex. The predation risk hypothesis was hardly supported either. Consequences of dispersal were marginal in both sexes because neither fledgling production in females, nor territory quality in males improved after dispersal. In addition, males settled on territories closer to the forest edge than those occupied predispersal, which is opposite to the prediction of the predation risk hypothesis. We conclude that own reproductive success was the major factor determining dispersal behavior in females, whereas territory quality and possibly predation risk were most important in males. Overall, breeding dispersal appeared not to be adaptive in this dense population inhabiting an optimal habita

Possible causes and consequences of philopatry and breeding dispersal in red-backed shrikes

Studies of animal breeding dispersal have often focused on possible causes, whereas its adaptive significance has received less attention. Using an information-theoretic approach, we assessed predictions of four hypotheses relating to causes and consequences of breeding dispersal in a migratory passerine, the red-backed shrike Lanius collurio. As predicted by the reproductive performance hypothesis, probability of breeding dispersal in females (though not in males) decreased with increasing annual average number of fledglings produced in the past year, but there was no association with conspecific reproductive performance in either sex. The site choice hypothesis, stating that individuals disperse to improve breeding site quality, received support in males only, as dispersal probability was positively associated to a measure indicating low territory quality. The social constraints hypothesis, referring to dispersal in relation to intraspecific interactions, received little support in either sex. The predation risk hypothesis was hardly supported either. Consequences of dispersal were marginal in both sexes because neither fledgling production in females, nor territory quality in males improved after dispersal. In addition, males settled on territories closer to the forest edge than those occupied predispersal, which is opposite to the prediction of the predation risk hypothesis. We conclude that own reproductive success was the major factor determining dispersal behavior in females, whereas territory quality and possibly predation risk were most important in males. Overall, breeding dispersal appeared not to be adaptive in this dense population inhabiting an optimal habitat

Применение метода кривой падения Арпса для прогноза добычи нефти скважины Н1 месторождения “Чёрный Дракон”, Вьетнам

We present here a simple and general non-parametrized entropy-fix for the computation of fluid flows involving sonic points in rarefaction waves. It enables to improve the stability and the accuracy of approximate Riemann solvers. It is also applied to MHD flows

Ecological and social effects on reproduction and local recruitment in the red-backed shrike

Numerous hypotheses have been proposed to explain variation in reproductive performance and local recruitment of animals. While most studies have examined the influence of one or a few social and ecological factors on fitness traits, comprehensive analyses jointly testing the relative importance of each of many factors are rare. We investigated how a multitude of environmental and social conditions simultaneously affected reproductive performance and local recruitment of the red-backed shrike Lanius collurio (L.). Specifically, we tested hypotheses relating to timing of breeding, parental quality, nest predation, nest site selection, territory quality, intraspecific density and weather. Using model selection procedures, predictions of each hypothesis were first analysed separately, before a full model was constructed including variables selected in the single-hypothesis tests. From 1988 to 1992, 50% of 332 first clutches produced at least one fledgling, while 38.7% of 111 replacement clutches were successful. Timing of breeding, nest site selection, predation pressure, territory quality and intraspecific density influenced nest success in the single-hypothesis tests. The full model revealed that nest success was negatively associated with laying date, intraspecific density, and year, while nest success increased with nest concealment. Number of fledglings per successful nest was only influenced by nest concealment: better-camouflaged nests produced more fledglings. Probability of local recruitment was related to timing of breeding, parental quality and territory quality in the single-hypothesis tests. The full models confirmed the important role of territory quality for recruitment probability. Our results suggest that reproductive performance, and particularly nest success, of the red-backed shrike is primarily affected by timing of breeding, nest site selection, and intraspecific density. This study highlights the importance of considering many factors at the same time, when trying to evaluate their relative contributions to fitness and life history evolutio

Assessing periodicity of periodic leg movements during sleep

Periodic leg movements (PLM) during sleep consist of involuntary periodic movements of the lower extremities. The debated functional relevance of PLM during sleep is based on correlation of clinical parameters with the PLM index (PLMI). However, periodicity in movements may not be reflected best by the PLMI. Here, an approach novel to the field of sleep research is used to reveal intrinsic periodicity in inter movement intervals (IMI) in patients with PLM

Controlled oxygen vacancy induced p-type conductivity in HfO{2-x} thin films

We have synthesized highly oxygen deficient HfO$_{2-x}$ thin films by controlled oxygen engineering using reactive molecular beam epitaxy. Above a threshold value of oxygen vacancies, p-type conductivity sets in with up to 6 times 10^{21} charge carriers per cm3. At the same time, the band-gap is reduced continuously by more than 1 eV. We suggest an oxygen vacancy induced p-type defect band as origin of the observed behavior.Comment: 4 pages, 3 figure