Sportpädagogik im Spannungsfeld gesellschaftlicher Erwartungen,wissenschaftlicher Ansprüche und empirischer Befunde     

Ralf Sygusch  Miriam Kehne 《Sportwissenschaft》2007,37(4):467-472

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Handlungstheorie — ein Gewinn?     

Ralf Erdmann 《Sportwissenschaft》1990,20(2):146-161

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Entwicklungsförderung im außerschulischen Kinder- und Jugendsport     

Dr. Christian Herrmann PhD  Prof. Ralf Sygusch PhD 《Sportwissenschaft》2014,44(1):25-38

The concept “Psychosocial Resources in Sport” (Sygusch, Ein sportartenorientiertes Förderkonzept für Schule und Verein. Schorndorf: Hofmann, 2007) substantiates methodical measures to systematically promote resources such as self-concept, self-efficacy, group cohesion, and social competence. In the PRimus-study this concept was implemented in handball and apparatus gymnastics over 7 months in 29 training groups (age: 12–16 years). The aim, amongst others, was to evaluate whether the concept is effective in child and youth sport. For this purpose a mixed-method design was chosen. The development of resources were measured through qualitative trainer interviews (n?=?39) as well as quantitative surveys of athletes (IG: n?=?374; KG: n?=?270) over three measurement times. The trainer statements show that the intervention initiated resource strengthening processes which indicate a promotion of resources. The quantitative measurements, however, do not reveal substantial changes throughout the intervention period. The change in behavior of coaches and athletes – regardless of the intervention measures – influences the development of resources. Overall, it must be noted that broad-based intervention concepts, which are also feasible, had difficulty proving the effects and the effectiveness.  相似文献   

Neo-Aristotelian mereology     

Ralf M. Bader 《Metascience》2010,19(3):413-415

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Chronic morphine drinking establishes morphine tolerance, but not addiction in Wistar rats   总被引：1，自引：0，他引：1  

Binsack R  Zheng ML  Zhang ZS  Yang L  Zhu YP 《Journal of Zhejiang University. Science. B》2006,7(11):892-898

Objective： Some animal models apply morphine in the drinking water to generate addiction, but related reports are not free of conflicting results. Accordingly, this study aimed to figure out if chronic consumption of morphine in the drinking water can induce morphine addiction in Wistar rats. Methods： For 3 weeks, the animals received a daily morphine dose of 35 mg/kg by offering a calculated volume of sugar water （5% sucrose） with morphine （0. l mg/ml） to each rat; animals receiving just sugar water served as controls. Immediately after the treatment phase, the tail immersion test was used to check for morphine tolerance, and all animals were then kept on tap water for one week （withdrawal phase）. Afterwards, all rats were allowed to choose their drinking source by offering two bottles, containing sugar water without and with morphine, simultaneously for two days （preference phase）. Results： While the chronic consumption of morphine led to a reduction in body weight and to morphine tolerance, the morphine-treated Wistar rats did not show any preference for the opiate-containing sugar water. Conclusion： Body weight loss and tolerance do not reveal a condition of drug craving, and current animal models should be re-evaluated regarding their potential to establish morphine addicted animals.  相似文献   

Leg amputation side determines performance in curve sprinting: a case study on a Paralympic medalist     

Johannes Funken  Kai Heinrich  Steffen Willwacher  Ralf Müller  Jonas Böcker  Hiroaki Hobara 《Sports biomechanics / International Society of Biomechanics in Sports》2019,18(1):75-87

The lower limb kinetics of curve sprinting in amputees are not well described in the literature, particularly with respect to the effect of the side of amputation. This is an issue due to the importance of the knowledge for prosthetic design and classification of athletes. Thus, the aim of this study was to investigate the influence of side of amputation on curve sprinting performance in athletes with a unilateral leg amputation. A three-dimensional motion analysis system (Vicon), four force plates (Kistler) and a modified mathematical human model (ALASKA) were used to compare clockwise and counter clockwise curve sprinting lower limb kinematics and kinetics of a Paralympic medalist with a left-sided knee exarticular amputation. Results reveal that vertical ground reaction force application and total vertical impulse were lower when the affected limb was at the inside of the curve. The unaffected limb showed joint mechanics different to those established for non-amputee athletes and might contribute better to propulsion when being the inside limb. Curve sprinting biomechanics and the ability to attain high radial velocities are directly dependent on the side of amputation relative to the curve direction in a unilateral amputee athlete of highest performance level.  相似文献   

Null and Void? Errors in Meta-analysis on Perceptual Disfluency and Recommendations to Improve Meta-analytical Reproducibility     

Weissgerber  Sophia C.  Brunmair  Matthias  Rummer  Ralf 《Educational Psychology Review》2021,33(3):1221-1247

Educational Psychology Review - In the 2018 meta-analysis of Educational Psychology Review entitled “Null effects of perceptual disfluency on learning outcomes in a text-based educational...  相似文献   

Terra Incognita: How Research Can Help to Chart Unexplored Terrain in Adult Literacy     

Ralf St. Clair 《International Review of Education/Internationale Zeitschrift für Erziehungswissenschaft/Revue internationale l'éducation》2008,40(1):565-579

The aim of this article is to make initial suggestions as to how certain aspects of adult literacy and numeracy education would benefit from research resources. The author identifies several issues affecting literacy research, such as limited research capacity and lack of a shared international forum. He then discusses four aspects in more detail: models of literacy, the benefits of literacy education, instructional practices, and the effects of diverse settings for practice. In all of these areas, he argues, it is important that attention is paid to the distinction between research about and research in literacy and numeracy education, as these two types of research serve different purposes using different strategies. The article closes with a call for more reliable research-based information in order to inform and enrich the professional judgement of educators.  相似文献   

Integrating Northern Ireland: Cross‐group friendships in integrated and mixed schools          下载免费PDF全文

Danielle Blaylock  Joanne Hughes  Ralf Wölfer  Caitlin Donnelly 《British Educational Research Journal》2018,44(4):643-662

While Northern Ireland strives to build a shared society, the current reality is that everyday experiences are still shaped by division along ethno‐religious lines. This is particularly pronounced in the education system, where more than 92% of pupils attend separate schools. Within the predominantly separate education system, however, exists a small collection of schools which cater to a more heterogeneous pupil body and offer the opportunity for young people from both communities to meet and interact, and potentially develop cross‐group friendships. The present study compares the network‐based cross‐group friendships within two such school types; an integrated and a separate post‐primary school. These schools boast a distinct ethos yet they similarly enrol students from Catholic and Protestant backgrounds. Findings reveal that both schools show a high level of interconnection between pupils; however, the integrated school, with an ethos that openly supports social cohesion, shows a greater tendency towards cross‐group interactions and best friendships than those found within the separate school. In line with contact theory, these findings suggest that it may not be enough to simply create opportunities for intergroup contact but that optimal conditions, such as institutional support, may be a prerequisite for positive relationships to flourish. Implications for educational policies designed to promote greater cross‐community contact are discussed.  相似文献   

Using Biomedically Relevant Multimedia Content in an Introductory Physics Course for Life Science and Pre-health Students     

Elliot Mylott  Ellynne Kutschera  Justin C. Dunlap  Warren Christensen  Ralf Widenhorn 《Journal of Science Education and Technology》2016,25(2):222-231

We will describe a one-quarter pilot algebra-based introductory physics course for pre-health and life science majors. The course features videos with biomedical experts and cogent biomedically inspired physics content. The materials were used in a flipped classroom as well as an all-online environment where students interacted with multimedia materials online and prior to engaging in classroom activities. Pre-lecture questions on both the medical content covered in the video media and the physics concepts in the written material were designed to engage students and probe their understanding of physics. The course featured group discussion and peer-lead instruction. Following in-class instruction, students engaged with homework assignments which explore the connections of physics and the medical field in a quantitative manner. Course surveys showed a positive response by the vast majority of students. Students largely indicated that the course helped them to make a connection between physics and the biomedical field. The biomedical focus and different course format were seen as an improvement to previous traditional physics instruction.  相似文献