Structure and development of pre-service physics teachers’ professional knowledge     

Stefan Sorge  Jochen Kröger  Stefan Petersen  Knut Neumann 《International Journal of Science Education》2019,41(7):862-889

ABSTRACT

Teachers’ professional knowledge is considered one of the most important predictors of instructional quality. According to Shulman, such professional knowledge includes content, pedagogical content and pedagogical knowledge. Although recent research shed some light on the structure of the dimensions of professional knowledge, little is known how teacher education impacts pre-service physics teachers’ professional knowledge. In an effort to address this issue, we examined the content, pedagogical content and pedagogical knowledge of N?=?200 pre-service physics teachers enrolled in different years of teacher education at 12 major teacher education universities in Germany. We used structural equation modelling (1) to examine the relations amongst pre-service physics teachers’ content, pedagogical content and pedagogical knowledge, (2) to explore how the three kinds of knowledge and their relations differ across different stages of teacher education and (3) to identify factors affecting the level of each component of professional knowledge. Our findings suggest that content, pedagogical content and pedagogical knowledge represent distinct types of knowledge. Furthermore, our findings show that in the first years of professional education, pedagogical content knowledge is more closely related with general pedagogical knowledge while in later years, it is more closely related with content knowledge, suggesting that it develops from a general knowledge about teaching and learning into knowledge about the teaching and learning of specific content. Finally, beyond school achievement and years of enrolment as predictors, we find in particular the amount of classroom observations to have a positive impact on the professional knowledge of pre-service physics teachers.  相似文献   

Stabilität der physischen Fitness im Kindesalter     

Till Utesch  Jochen Zinner  Dirk Büsch 《Sportwissenschaft》2018,48(3):404-414

Monitoring of physical fitness (PF) in childhood is important from a societal as well as individual perspective to ensure and support healthy child development. Hence, the German Standing Conference of the Ministers of Education and Cultural Affairs together with the German Olympic Federation recommend the usage of motor tests, for instance in schools, to implement targeted interventions. Results of motor assessments are interpreted using reference categories to prevent overinterpretation of small but meaningless intra- and inter individual differences. Furthermore, temporal trends can influence the validity of these reference categories. The aims of the study are (1) to examine short- and medium-term changes in PF in middle childhood (2) to evaluate implications for reference values and the validity of the construct PF, (3) to provide valid reference values for eight- to nine-year-old children. In the school years 2011–2016, over 20,000 third-graders completed the German Motor Test (GMT) in the project “Berlin has Talent”. Possible temporal trends are examined using regressions and cross-tables. Implications of these changes on the construct PF are analyzed using Rasch measurement. Four out of seven tasks showed temporal changes. However, the validity and unidimensionality of the GMT are confirmed (p?>?0.90), if balancing backwards is excluded from the model. On the one hand, task-related changes of children’s motor performance within five years support the requirement of a comprehensive continuous monitoring to enable early interventions. On the other hand, they call for continuous evaluation of reference values of the GMT, which should rely on representative and sufficiently large samples.  相似文献   

Offensichtlich unsichtbar
Die P?dagogisierung des Umgangs mit Wissen im Kontext des lebenslangen Lernens     

Jochen Kade  Wolfgang Seitter 《Zeitschrift für Erziehungswissenschaft》2007,10(2):181-198

Der vorliegende Beitrag besch?ftigt sich unter Bezugnahme auf einen systemtheoretischen Kommunikationsbegriff mit der (p?dagogischen) Strukturierung des Lernens Erwachsener. Er geht von der These aus, dass die P?dagogisierung des lernbezogenen Umgangs mit Wissen im Erwachsenenalter unsichtbar (gemacht) wird. Auf der Grundlage eines abgeschlossenen DFG-Projekts werden unterschiedliche Formen p?dagogischer Kommunikation dargestellt und das in ihren Settings, ihrer kommunikativen Verfasstheit und den Mustern ihrer Strukturierung eingelagerte Invisibilisierungspotenzial herausgearbeitet. Vor diesem Hintergrund wird das Konzept des Lebenslangen Lernens als eine entwickelte Form des Umgangs mit dem Paradox der (Un-)Sichtbarkeit p?dagogischer Kommunikation interpretiert. Was diese Institutionalisierungsform des Lernens kennzeichnet, ist somit eine doppelt gegenl?ufige Gleichzeitigkeit von Visibilisierung und Invisibilisierung.  相似文献   

Mental Rotation of Tactical Instruction Displays Affects Information Processing Demand and Execution Accuracy in Basketball     

Till Koopmann  Yvonne Steggemann-Weinrich  Jochen Baumeister 《Research quarterly for exercise and sport》2017,88(3):365-370

Purpose: In sports games, coaches often use tactic boards to present tactical instructions during time-outs (e.g., 20 s to 60 s in basketball). Instructions should be presented in a way that enables fast and errorless information processing for the players. The aim of this study was to test the effect of different orientations of visual tactical displays on observation time and execution performance. High affordances in visual-spatial transformation (e.g., mental rotation processes) might impede information processing and might decrease execution performance with regard to the instructed playing patterns. Method: In a within-subjects design with 1 factor, 10 novice students were instructed with visual tactical instructions of basketball playing patterns with different orientations either showing the playing pattern with low spatial disparity to the players’ on-court perspective (basket on top) or upside down (basket on bottom). Results: The self-chosen time for watching the pattern before execution was significantly shorter and spatial accuracy in pattern execution was significantly higher when the instructional perspective and the real perspective on the basketball court had a congruent orientation. Conclusion: The effects might be explained by interfering mental rotation processes that are necessary to transform the instructional perspective into the players’ actual perspective while standing on the court or imagining themselves standing on the court. According to these results, coaches should align their tactic boards to their players’ on-court viewing perspective.  相似文献   

The use of augmented reality to foster conceptual knowledge acquisition in STEM laboratory courses—Theoretical background and empirical results     

Kristin Altmeyer  Sebastian Kapp  Michael Thees  Sarah Malone  Jochen Kuhn  Roland Brünken 《British journal of educational technology : journal of the Council for Educational Technology》2020,51(3):611-628

Learning with hands-on experiments can be supported by providing essential information virtually during lab work. Augmented reality (AR) appears especially suitable for presenting information during experimentation, as it can be used to integrate both physical and virtual lab work. Virtual information can be displayed in close spatial proximity to the correspondent components in the experimentation environment, thereby ensuring a basic design principle for multimedia instruction: the spatial contiguity principle. The latter is assumed to reduce learners' extraneous cognitive load and foster generative processing, which supports conceptual knowledge acquisition. For the present study, a tablet-based AR application has been developed to support learning from hands-on experiments in physics education. Real-time measurement data were displayed directly above the components of electric circuits, which were constructed by the learners during lab work. In a two group pretest–posttest design, we compared university students' (N = 50) perceived cognitive load and conceptual knowledge gain for both the AR-supported and a matching non-AR learning environment. Whereas participants in both conditions gave comparable ratings for cognitive load, learning gains in conceptual knowledge were only detectable for the AR-supported lab work.  相似文献   

Nuclear magnetic resonance spectroscopy as a new approach for improvement of early diagnosis and risk stratification of prostate cancer     

Bo Yang  Guo-qiang Liao  Xiao-fei Wen  Wei-hua Chen  Sheng Cheng  Jens-Uwe Stolzenburg  Roman Ganzer  Jochen Neuhaus 《Journal of Zhejiang University. Science. B》2017,18(11):921-933

Prostate cancer (PCa) is the second most common male cancer worldwide and the fifth leading cause of death from cancer in men. Early detection and risk stratification is the most effective way to improve the survival of PCa patients. Current PCa biomarkers lack sufficient sensitivity and specificity to cancer. Metabolite biomarkers are evolving as a new diagnostic tool. This review is aimed to evaluate the potential of metabolite biomarkers for early detection, risk assessment, and monitoring of PCa. Of the 154 identified publications, 27 and 38 were original papers on urine and serum metabolomics, respectively. Nuclear magnetic resonance (NMR) is a promising method for measuring concentrations of metabolites in complex samples with good reproducibility, high sensitivity, and simple sample processing. Especially urine-based NMR metabolomics has the potential to be a cost-efficient method for the early detection of PCa, risk stratification, and monitoring treatment efficacy.  相似文献   

Adaptive progressive download based on the MPEG-4 file format   总被引：1，自引：0，他引：1  

FRBER Nikolaus  DHLA Stefan  ISSING Jochen Multimedia Transport  Dept. Audio  Fraunhofer Institute for Integrated Circuits IIS  Erlangen  Germany 《浙江大学学报(A卷英文版)》2006,7(Z1)

In this paper we describe how progressive download and adaptive streaming can be combined into a simple and efficient streaming framework. Based on the MPEG-4 file format (MP4) we use HTTP for transport and argue that these two components are sufficient for specifying an open streaming architecture. The client selects appropriate chunks from the MP4 file to be transferred based on (1) the header information (i.e. the "moov" box) in the first part of the file and (2) his observation of network throughput. The framework is completely client driven which allows for better server scalability and reduces signalling overhead. We discuss architecture and implementation issues such as complexity, interoperability and scalability and compare to 3GPP PSS Re1-6 adaptive streaming when appropriate. Measurements from a simple MP4/HTTP streaming client are presented showing that appropriate chunks are selected such that increased reliability is achieved.  相似文献   

Adaptive progressive download based on the MPEG-4 file format     

Färber Nikolaus  Döhla Stefan  Issing Jochen 《浙江大学学报(A卷英文版)》2006,7(1):106-111

In this paper we describe how progressive download and adaptive streaming can be combined into a simple and efficient streaming framework. Based on the MPEG-4 file format (MP4) we use HTTP for transport and argue that these two components are sufficient for specifying an open streaming architecture. The client selects appropriate chunks from the MP4 file to be transferred based on (1) the header information (i.e. the “moov” box) in the first part of the file and (2) his observation of network throughput. The framework is completely client driven which allows for better server scalability and reduces signalling overhead. We discuss architecture and implementation issues such as complexity, interoperability and scalability and compare to 3GPP PSS Rel-6 adaptive streaming when appropriate. Measurements from a simple MP4/HTTP streaming client are presented showing that appropriate chunks are selected such that increased reliability is achieved.  相似文献   

The Independence of Research—A Review of Disciplinary Perspectives and Outline of Interdisciplinary Prospects     

Gläser  Jochen  Ash  Mitchell  Buenstorf  Guido  Hopf  David  Hubenschmid  Lara  Janßen  Melike  Laudel  Grit  Schimank  Uwe  Stoll  Marlene  Wilholt  Torsten  Zechlin  Lothar  Lieb  Klaus 《Minerva》2022,60(1):105-138

Minerva - The independence of research is a key strategic issue of modern societies. Dealing with it appropriately poses legal, economic, political, social and cultural problems for society, which...  相似文献   

Qualifizierungsstrategien deutscher Unternehmen in Japan,Indien und China – Deutsche Vorbilder oder einheimische Verfahrensweisen?     

Jochen van der Burgt  Junmin Li  Christine Wilbertz  Prof. Dr. Matthias Pilz 《Zeitschrift für Erziehungswissenschaft》2014,17(1):135-158

For many years the possible introduction of the German dual vocational education programme into other countries has been discussed. The transferability of the German vocational education and training system into other countries has been controversially discussed in the work of development assistance and in international comparative vocational education research for a long time, even though the empirical basis is quite narrow. The present study focuses on the vocational and training behaviours of German corporations in their subsidiaries in Japan, China and India. Even though all three nations are important countries for the German corporations the culture, the vocational education and employment systems are very different. Based upon the theory of the EPRG model in international management, this study analyses the vocational education and training activities and in terms of the EPRG model by interviews with experts. The findings indicate that a polycentric approach is used exclusively in India and to a significant extent in China. In Japan, in addition to the prevalent polycentric approach, there is also a strong influence of geocentric training styles. The similarities can be partly explained by the stronger focus on theoretical training institutions and a more academic attitude in society as a whole, which means that purely vocational training plays a marginal role with low esteem. In this context, it would be difficult to implement the German style of vocational education and training.  相似文献