Constructivism reconstructed: A reply to suchting     

Ernst von Glasersfeld 《Science & Education》1992,1(4):379-384

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The place of private foundations in the support of research in the Federal Republic of Germany     

Birrenbach K 《Minerva》1985,23(3):383-422

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The wider setting of disorder in the German universities     

Helmut Schelsky 《Minerva》1972,10(4):614-626

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Forschungs- und Entwicklungsprojekte
Virtuelle Maschinen: zSeries- und S/390-Partitionierung     

Joachim von Buttlar  Wilhelm G. Spruth 《Informatik - Forschung und Entwicklung》2004,39(1):41-54

Der gleichzeitige Betrieb mehrerer Gast-Betriebssysteme auf einem einzigen physischen Rechner unter einem Host-Betriebssystem ist eine leistungsfähige moderne Entwicklung. Bekannte Beispiele sind VMware für die IA32-Architektur sowie das Betriebssystem z/VM und die PR/SM-LPAR Einrichtungen der zSeries-Architektur. Die Nutzung eines Betriebssystems als Gast bedingt einen Leistungsverlust. Die als Partitionierung bezeichnete Zuordnung von Systemressourcen zu den einzelnen Gast-Betriebssysteme ist schwierig, wenn eine dynamische Anpassung an sich ändernde Lastprofile erforderlich ist. Diese Probleme lassen sich mittels Erweiterungen der Hardwarearchitektur adressieren, sowie durch Softwarestrukturen, welche diese Erweiterungen nutzen. Die Erweiterungen der Hardwarearchitektur gehen über das hinaus, was auf heutigen Rechnerarchitekturen wie IA32 oder Mips verfügbar ist. Der vorliegende Beitrag erläutert den optimalen Betrieb von Gast-Betriebssystemen und die begleitenden Partitionierungsmöglichkeiten auf der zSeries-Plattform und beschreibt die zusätzlichen Hardware- und Software-Einrichtungen, welche dies ermöglichen.  相似文献   

The Effects of Darkness and Lightness Cues in the Visual Depiction of Political Actors Involved in Scandals: An Experimental Study     

Christian von Sikorski 《Communication Research Reports》2018,35(2):162-171

Reports about political scandals have increased lately. Yet the general impact of news visuals and the specific role of lightness and darkness cues in images of scandalized politicians remain unclear. With the help of an experiment, the present pilot study examined the influence of candidate images and the effects of particular image backgrounds (light versus dark). While the foreground of the image depicting a politician involved in a scandal remained unchanged, the background was systematically altered. The results revealed that a light background had a positive effect on recipients’ attitudes toward the politician. In contrast, participants exposed to a dark image background demanded a more severe punishment for the politician.  相似文献   

Television in the Service of the School in Austria     

Dr. Helmut Zilk 《Educational Media International》2013,50(3-4)

The greater part of psychoanalytical literature about television as a phenomenon of our century, stresses generally the impressive force of television. It affects the habits of man, determines the rhythm of his life and his attitude towards life. This being so, judgements are preconceived and so man's power of unbiased decision is weakened. Television has a personal intimate style of presentation and effects thus in the viewer a readiness of identification that outstrips by far that of the film experience.  相似文献   

Effects of high-complexity and high-cognitive-level instructional tasks in biology lessons on students’ factual and conceptual knowledge     

Christian Förtsch  Sonja Werner  Lena von Kotzebue  Birgit J. Neuhaus 《Research in Science & Technological Education》2018,36(3):353-374

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Combining issues of “girl-suited” science teaching,STS and constructivism in a physics textbook     

Professor Dr. Reinders Duit  Professor Dr. Peter Häussler  Dr. Roland Lauterbach  Professor Dr. Helmut Mikelskis  Professor Dr. Walter Westphal 《Research in Science Education》1992,22(1):106-113

This paper outlines the design of a physics textbook that addresses issues of gender-inclusive physics teaching, STS and constructivism. Difficulties of addressing these issues in a textbook for normal classes, which has to compete with other textbooks on the market will be discussed. Specializations: constructivist approaches in science education research and practice. Specializations: gender issues in science instruction. Specializations: primary education, integrated science. Specializations: STS, phenomenological oriented physics instruction. Specializations: peace education within science education.  相似文献   

Teacher self-efficacy moderates the relations between imposed pressure from imposed curriculum changes and teacher stress     

David W. Putwain  Nathaniel P. von der Embse 《教育心理学》2019,39(1):51-64

Based on the Job Demands-resources (RD-R) model, the aim of the current study was to examine how pressure arising from imposed curriculum changes and teacher self-efficacy relate to perceived stress in teachers. Participants (839 teachers working in English schools) completed an online survey that contained questions about demographics, self-reported pressure from imposed curriculum changes, teacher self-efficacy, and perceived stress. Pressure from imposed curriculum changes was positively, and teacher self-efficacy negatively, related to perceived stress. Teacher-self efficacy moderated relations between pressure from imposed curriculum changes and perceived stress. High teacher self-efficacy was associated with lower perceived stress, relative to low teacher self-efficacy, when pressure from imposed curriculum changes was low. The differential advantage offered by high self-efficacy declined as pressure from imposed curriculum changes increased.  相似文献   

W. H. Fox Talbot and the history of photography     

Helmut Gernsheim 《Endeavour》1977,1(1):18-22

This year marks the centenary of the death of W. H. Fox Talbot, the inventor of the negative/positive process of photography. This article reviews his contribution to the development of photography in relation to that of other pioneers, notably Niépce, Daguerre, and Archer. It also considers the consequences for the development of photography in Britain of Talbot's strict adherence to his patent rights.  相似文献