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351.
Johan Pion Andreas Hohmann Tianbiao Liu Matthieu Lenoir Veerle Segers 《Journal of sports sciences》2017,35(8):806-811
This retrospective study focuses on the comparison of different predictive models based on the results of a talent identification test battery for female gymnasts. We studied to what extent these models have the potential to optimise selection procedures, and at the same time reduce talent development costs in female artistic gymnastics. The dropout rate of 243 female elite gymnasts was investigated, 5 years past talent selection, using linear (discriminant analysis) and non-linear predictive models (Kohonen feature maps and multilayer perceptron). The coaches classified 51.9% of the participants correct. Discriminant analysis improved the correct classification to 71.6% while the non-linear technique of Kohonen feature maps reached 73.7% correctness. Application of the multilayer perceptron even classified 79.8% of the gymnasts correctly. The combination of different predictive models for talent selection can avoid deselection of high-potential female gymnasts. The selection procedure based upon the different statistical analyses results in decrease of 33.3% of cost because the pool of selected athletes can be reduced to 92 instead of 138 gymnasts (as selected by the coaches). Reduction of the costs allows the limited resources to be fully invested in the high-potential athletes. 相似文献
352.
353.
Christoph Kulgemeyer Andreas Borowski David Buschhüter Patrick Enkrott Maren Kempin Peter Reinhold Josef Riese Horst Schecker Jan Schröder Christoph Vogelsang 《科学教学研究杂志》2020,57(10):1554-1582
Professional knowledge is an important source of science teachers' actions in the classroom (e.g., personal professional content knowledge [pedagogical content knowledge, PCK] is the source of enacted PCK in the refined consensus model [RCM] for PCK). However, the evidence for this claim is ambiguous at best. This study applied a cross-lagged panel design to examine the relationship between professional knowledge and actions in one particular instructional situation: explaining physics. Pre- and post a field experience (one semester), 47 preservice physics teachers from four different universities were tested for their content knowledge (CK), PCK, pedagogical knowledge (PK), and action-related skills in explaining physics. The study showed that joint professional knowledge (the weighted sum of CK, PCK, and PK scores) at the beginning of the field experience impacted the development of explaining skills during the field experience (β = .38**). We interpret this as a particular relationship between professional knowledge and science teachers' action-related skills (enacted PCK): professional knowledge is necessary for the development of explaining skills. That is evidence that personal PCK affects enacted PCK. In addition, field experiences are often supposed to bridge the theory-practice gap by transforming professional knowledge into instructional practice. Our results suggest that for field experiences to be effective, preservice teachers should start with profound professional knowledge. 相似文献
354.
Andreas Fejes Maria Olson Lina Rahm Magnus Dahlstedt Fredrik Sandberg 《Scandinavian Journal of Educational Research》2018,62(3):461-473
In this article we have analysed the ways a discourse on individualisation is taking shape within adult education in Sweden, how it operates, and what effects it has in terms of shaping student subjectivity. Drawing on a post-structural theorisation we analyse interviews with teachers and students in municipal adult education and folk high schools (FHS). The analysis illustrates how both institutions contribute to the shaping of individualised subjectivities, although differently. At the end, a general question is raised about what happens with the democratic function of adult education in general when a discourse on individualisation operates in the ways described and, more specifically, asks what is happening to FHS as an educational practice that upholds its self-image as a last bastion of a collective notion of learning and subjectivity and nurturing an educational practice of learning democracy? 相似文献
355.
Interactive anatomical and surgical live stream lectures improve students' academic performance in applied clinical anatomy 下载免费PDF全文
Thomas Shiozawa Benjamin Butz Stephan Herlan Andreas Kramer Bernhard Hirt 《Anatomical sciences education》2017,10(1):46-52
Tuebingen's Sectio Chirurgica (TSC) is an innovative, interactive, multimedia, and transdisciplinary teaching method designed to complement dissection courses. The Tuebingen's Sectio Chirurgica (TSC) allows clinical anatomy to be taught via interactive live stream surgeries moderated by an anatomist. This method aims to provide an application‐oriented approach to teaching anatomy that offers students a deeper learning experience. A cohort study was devised to determine whether students who participated in the TSC were better able to solve clinical application questions than students who did not participate. A total of 365 students participated in the dissection course during the winter term of the 2012/2013 academic year. The final examination contained 40 standard multiple‐choice (S‐MC) and 20 clinically‐applied multiple‐choice (CA‐MC) items. The CA‐MC items referred to clinical cases but could be answered solely using anatomical knowledge. Students who regularly participated in the TSC answered the CA‐MC questions significantly better than the control group (75% and 65%, respectively; P < 0.05, Mann‐Whitney U test). The groups exhibited no differences on the S‐MC questions (85% and 82.5%, respectively; P > 0.05). The CA‐MC questions had a slightly higher level of difficulty than the S‐MC questions (0.725 and 0.801, respectively; P = 0.083). The discriminatory power of the items was comparable (S‐MC median Pearson correlations: 0.321; CA‐MC: 0.283). The TSC successfully teaches the clinical application of anatomical knowledge. Students who attended the TSC in addition to the dissection course were able to answer CA‐MC questions significantly better than students who did not attend the TSC. Thus, attending the TSC in addition to the dissection course supported students' clinical learning goals. Anat Sci Educ 10: 46–52. © 2016 American Association of Anatomists. 相似文献
356.
Bård Erlend Solstad Andreas Stenling Yngvar Ommundsen Bente Wold Jean-Philippe Heuzé Philippe Sarrazin 《Journal of sports sciences》2020,38(6):626-643
ABSTRACTThe present study examined the psychometric properties of the coach-adapted version of the Empowering and Disempowering Motivational Climate Questionnaire (EDMCQ) using Bayesian structural equation modelling (BSEM). The sample included 780 (Mage = 36.4; SD = 10.8; males n = 698; females n = 54; 28 participants did not report sex) youth sport coaches representing five European countries (i.e., England, France, Greece, Norway, and Spain). The results did not support a 34-item five-factor, hierarchical, a two-factor BSEM, or a bifactor BSEM model across the participating countries. However, the results supported a reduced 19-item first-order, two-factor BSEM model that largely showed approximate metric invariance, but not approximate scalar invariance across the five countries. The pool of items constituting empowering and disempowering motivational climates should be refined to further enhance the empirical operationalisation of the coach-adapted version of the EDMCQ. Advancing the quality of translation-back-translation procedures across cultures and conducting multi-national pilot testing seems warranted as well. These recommendations may help to identify the distinctive aspects of each underlying sub-dimension of the EDMCQ, where coaches are the respondents, and pave the way for further examination of the proposed hierarchical multidimensional factor structure and the cross-cultural equivalence of the EDMCQ for this population. 相似文献
357.
This article describes a design/build exercise conducted in an Architectural Materials and Methods class to achieve three interrelated objectives: (1) to apply physically the semester's theoretical focus on the constituent process and languages of architecture investigations, (2) to capitalise on the physical and aesthetic properties of concrete masonry to explore fabrication and detailing in the design process, and (3) to examine preconceptions about solo work and team work in architectural education and practice. What makes this project unique among other design/build projects is its emphasis on Concrete Masonry Units (known as CMU in the USA) and their visual, tactile and functional properties. The junior and senior students were allowed three building elements: an 8′ cube of space, an unlimited number of concrete blocks, and the visual ecology of a site. The structural vocabulary that Frank Lloyd Wright developed consisted of a three‐dimensional field of lines through which the solid elements of the building were located, enabling the voids to be integral to the whole and equally meaningful. Using these elements, students were asked to design/build temporary structures in a field next to the airport hangar on campus. The pedagogical objective was to adopt Wright's creative spirit, as opposed to quoting his architectural language. 相似文献
358.
Homsy A van der Wal PD Doll W Schaller R Korsatko S Ratzer M Ellmerer M Pieber TR Nicol A de Rooij NF 《Biomicrofluidics》2012,6(1):12804-128049
Clinical point of care testing often needs plasma instead of whole blood. As centrifugation is labor intensive and not always accessible, filtration is a more appropriate separation technique. The complexity of whole blood is such that there is still no commercially available filtration system capable of separating small sample volumes (10-100 μl) at the point of care. The microfluidics research in blood filtration is very active but to date nobody has validated a low cost device that simultaneously filtrates small samples of whole blood and reproducibly recovers clinically relevant biomarkers, and all this in a limited amount of time with undiluted raw samples. In this paper, we show first that plasma filtration from undiluted whole blood is feasible and reproducible in a low-cost microfluidic device. This novel microfluidic blood filtration element (BFE) extracts 12 μl of plasma from 100 μl of whole blood in less than 10 min. Then, we demonstrate that our device is valid for clinical studies by measuring the adsorption of interleukins through our system. This adsorption is reproducible for interleukins IL6, IL8, and IL10 but not for TNFα. Hence, our BFE is valid for clinical diagnostics with simple calibration prior to performing any measurement. 相似文献
359.
J Ingebrigtsen M Bendiksen MB Randers C Castagna P Krustrup A Holtermann 《Journal of sports sciences》2012,30(13):1337-1345
Abstract We examined performance, heart rate response and construct validity of the Yo-Yo IR2 test by testing 111 elite and 92 sub-elite soccer players from Norway and Denmark. VO(2)max, Yo-Yo IR1 and repeated sprint tests (RSA) (n?=?51) and match-analyses (n?=?39) were also performed. Yo-Yo IR2 and Yo-Yo IR1 performance was 41 and 25% better (P?0.01) for elite than sub-elite players, respectively, and heart rate after 2 and 4 min of the Yo-Yo IR2 test was 20 and 15 bpm (9 and 6% HRmax), respectively, lower (P?0.01) for elite players. RSA performance and VO(2)max was not different between competitive levels (P?>?0.05). For top-teams, Yo-Yo IR2 performance (28%) and sprinting distance (25%) during match were greater (P?0.05) than for bottom-teams. For elite and sub-elite players, Yo-Yo IR2 performance was correlated (P?0.05) with Yo-Yo IR1 performance (r?=?0.74 and 0.76) and mean RSA time (r?=?-0.74 and -0.34). We conclude that the Yo-Yo IR2 test has a high discriminant and concurrent validity, as it discriminates between players of different within- and between-league competitive levels and is correlated to other frequently used intermittent elite soccer tests. 相似文献
360.
Wibke Johannis Jenny Blommer Andreas R. Klatt Joerg H. Renno Klaus Wielckens 《Biochemia medica : ?asopis Hrvatskoga dru?tva medicinskih biokemi?ara / HDMB》2012,22(3):373-379