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This study aimed to (1) profile a professional boxer (23 years and 80 kg) with boxing-specific, muscle function, aerobic capacity and body composition tests, and (2) quantify how these measures varied during an 8-week preparation phase leading to, and post a state-Title Bout fought in the 76.2-kg class. A series of boxing-specific and muscle function tests were completed on 11 occasions: 9 prior and twice after the bout, each separated by approximately 2 weeks. The boxing test included 36 maximal punches (9 of each: lead and rear straights, lead and rear hooks) to a punching integrator measuring forces and velocity. Muscle function tests included countermovement jump, drop-jumps, isometric mid-thigh pull and isometric bench-press. Body composition was assessed using skin-fold measurements on three occasions and one dual energy X-ray absorptiometry scan. Aerobic capacity was assessed using 2 VO2 max tests. Leading up to the bout, performance decreased in isometric mid-thigh pull (8%), isometric bench-press (5%), countermovement jump (15%) and impact forces in 3 of 4 punches (4%–7%). Whereas measures of dynamic and isometric muscle function remained depressed or unchanged post competition, punching forces (6%–15%) and aerobic power (6%) increased. Data suggest the athlete may have super-compensated following rest as fatigue dissipated and further adaptation occurred. 相似文献
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Sibling incest: a study of the dynamics of 25 cases 总被引:1,自引:0,他引:1
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Israel Mbekezeli Dabengwa Jaya Raju Thomas Matingwina 《The Journal of Academic Librarianship》2019,45(4):343-357
This paper explores the shared experiences of practices of blended librarianship among Zimbabwean academic librarians to identify how adequately they comply with their dynamic roles and functions. The paper relies on the theoretical constructs from Bell and Shank's (2004, 2007) blended librarianship and Lave and Wenger's (1991) Legitimate Peripheral Participation (LPP) to understand how Zimbabwean academic librarians practice blended librarianship in the workplace through engagement in legitimate work tasks. The investigators used phenomenology to explore academic librarians' experiences of blended librarianship. They selected a sample of 101 academic librarians and delivered a semi-structured questionnaire to the sample, conducted document research and interviewed key informants from the sample. The researchers collected data from the Bindura University of Science Education, Chinhoyi University of Technology, Lupane State University, Midlands State University, the National University of Science and Technology, and PHSBL80 Library which chose to be undisclosed. Each institution adopted blended librarianship in its way. Four (4) different categories of blended librarianship emerged from the experiences; that is “transcending blended librarians”, “partially blended librarians”, “intermittent blended librarians” and “aspiring blended librarians”, displaying each institution's level of instructional technology and instructional design roles. The study proposes that the “Academic librarian's transition to blended librarianship” two-by-two matrix that developed was in this inquiry needs further refinement. Further enquiries may test the matrix within the same sites or other locales altogether to corroborate if the results are replicable. 相似文献
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Israel L. Eisenberg 《Journal of Jewish Education》2013,79(3):168-174
Research about Jewish choral singers provides insight to a previously unstudied population of adult Jewish learners. Drawing on over 2,000 responses to the First-Ever Survey of Jewish Choral Activity, this article describes how Jewish choral experiences enable adults to deepen their involvement in Jewish life and learning. Survey results suggest that participants in Jewish choral groups resemble secular singers in terms of social, identity, and skill development, but derive additional benefits in terms of Jewish Peoplehood, Jewish Competence, Spirituality, and Jewish Community. Jewish choral activities particularly benefit singers under 45 by providing them opportunities to integrate their Jewish and musical lives. 相似文献
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Ryan S. Baker Arnon Hershkovitz Lisa M. Rossi Adam B. Goldstein Sujith M. Gowda 《学习科学杂志》2013,22(4):639-666
We present a new method for analyzing a student's learning over time for a specific skill: analysis of the graph of the student's moment-by-moment learning over time. Moment-by-moment learning is calculated using a data-mined model that assesses the probability that a student learned a skill or concept at a specific time during learning (Baker, Goldstein, & Heffernan, 2010, 2011). Two coders labeled data from students who used an intelligent tutoring system for college genetics. They coded in terms of 7 forms that the moment-by-moment learning curve can take. These labels are correlated to test data on the robustness of students’ learning. We find that different visual forms are correlated with very different learning outcomes. This work suggests that analysis of moment-by-moment learning curves may be able to shed light on the implications of students’ different patterns of learning over time. 相似文献
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Schemes are said to underly cognitive processes, including problem solving in Mathematics. An attempt to test the impact of schemes in solving 2-step word-problems was made in an instructional study where two computerized environments were compared. In the S.P.A. (Schemes for Problem Analysis) software, the user works with schemes in order to analyze and solve the problems. When using S.P.A., the solver has to fill in the data in a scheme which is presented graphically. From the scheme the operation is derived in a deterministic manner, and the user (solver) can then calculate the solution. A feedback mechanism follows. In the A.P. (Algebraic Proposer) software the user fills in a table with the data given in the word-problem and then has to find out which operation to use in order to find the solution. The effectiveness of S.P.A. vs. A.P. was empirically examined in an instructional experiment which studied two sixth grade classes during a four month period. The results of the experiment concluded that, in solving easy word problems, both of the two software systems were equally helpful. In harder word-problems, however, those who learned with the S.P.A. experienced more success than those who had learned with A.P. It was also found that S.P.A. was more instrumental in helping low achieving students cope with hard word-problems. 相似文献
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