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41.
    
ABSTRACT

There are well-known biological differences between women and men, especially in technical-coordinative variations that contribute to sex differences in performance of complex movements like the most important offensive action in volleyball, the spike jump. The aim of this study was to investigate sex-dependent performance and biomechanical characteristics in the volleyball spike jump. Thirty female and male sub-elite volleyball players were analysed while striking a stationary ball with maximal spike jump height. Twelve MX13 Vicon cameras with a cluster marker set, two AMTI force plates, surface EMG, and a Full-Body 3D model in Visual3D were used. Main findings include sex differences (P< .05) in jump height (pη2 = .73), approach [speed (pη2 = .61), step length], transition strategy [plant angle, neuromuscular activation (pη2 = .91), horizontal force maxima and impulses], acceleration distances [centre of mass displacement (pη2 = .21), minimal knee and hip angles], use of torso and arms [incline, angular velocity (pη2 = .23)]. Correlations support that the results cannot be explained fully by strength and power differences between sexes but represent the product of technical-coordinative variations. Their relevance is acknowledged for both sexes and numerous performance determinants displayed sex differences. The integration of such attributes into sex-specific training seems promising but its effect requires further investigation.  相似文献   
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What is to be done in response to client suffering? Our aim in this paper is to explore the generative potential in viewing the topic of suffering and self-compassion through an interpretive lens. To accomplish this goal, we review Gadamerian philosophical hermeneutics as a way of understanding these topics while looking to the central tenets of counselling psychology as a guide in elucidating the therapeutic experience. In so doing, we stress the significance in recognizing the interpretive and unique experience of suffering and self-compassion, in turn privileging the client’s conceptualizations and experiences.  相似文献   
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Computers     
COMPUTER FUNDAMENTALS FOR AN INFORMATION AGE, by Gary Shelly and Thomas J. Cashman (Brea., Calif.: Anaheim Publishing, 1984—price not given, paper)

COMPUTERS: THE NON-TECHNOLOGICAL (HUMAN) FACTORS–A RECOMMENDED READING LIST ON COMPUTER ERGONOMICS & USER FRIENDLY DESIGN, edited by John L. Burch (The Report Store, 910 Massachusetts Avenue, Suite 503, Lawrence, KS 66044–$34.95, paper)

HOW TO PREVENT COMPUTER CRIME: A GUIDE FOR MANAGERS, by August Bequai (New York: John Wiley, 1983–$27.95)

VIDEO DISPLAYS, WORK, AND VISION, by the National Research Council (Washington, D.C.: National Academy Press, 1983—price not given, paper)

MEMORIES THAT SHAPED AN INDUSTRY: DECISIONS LEADING TO ISM SYSTEM/360, by Emerson W. Pugh (Cambridge, Mass.: MIT Press, 1984—price not given)

HIGH-SPEED COMPUTING DEVICES, by Engineering Research Associates, Inc. (Los Angeles: Tomash Publishers–distribution by MIT Press, Cambridge, Mass.—price not given)

THE COMPUTER COMES OF AGE: THE PEOPLE, THE HARDWARE, AND THE SOFTWARE, by Rene Monceau (Cambridge: - MIT Press, 1984—price not given)

FIRE IN THE VALLEY: THE MAKING OF THE PERSONAL COMPUTER, by Paul Freiberger and Michael Swaine (Osborne/McGraw-Hill, 2600 Tenth Street, Berkeley, Calif. 94710–$9.95, paper)

EXECUCOMP: MAXIMUM MANAGEMENT WITH THE NEW COMPUTERS, by F. Warren Benton (New York: John Wiley, 1983–$19.95)

ONLINE COMMUNITIES: A CASE STUDY OF THE OFFICE OF THE FUTURE, by Starr Roxanne Hiltz (Norwood, N.J.: Ablex, 1984—price not given)

INTRODUCTION TO LOCAL AREA COMPUTER NETWORKS, by K.C.E. Gee (New York: Wiley/Interscience, 1983–$16.95, paper)

LOCAL AREA NETWORKS: ISSUES, PRODUCTS, AND DEVELOPMENTS, by V.E. Cheong and R.A. Hirschheim (New York: Wiley/Interscience, 1983–$29.95)

BUSINESS DATA COMMUNICATIONS: BASIC CONCEPTS, SECURITY, AND DESIGN, by Jerry Fitzgerald (New York: John Wiley, 1984–$30.95)

INFORMATION MANAGEMENT IN PUBLIC ADMINISTRATION, edited by Forest W. Horton and Donald A. Marchand (Information Resources Press, 1700 N. Moore St., Arlington, VA 22209–$48.80 including postage)

ELECTRONIC ILLUSIONS: A SKEPTIC'S VIEW OF OUR HIGH-TECH FUTURE, by Ian Reinecke (New York: Penguin Books, 1984–$7.95, paper)  相似文献   
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Parents can employ communication strategies to prevent alcohol use among college students. This investigation utilizes content analysis to examine the coverage of parent-related strategies in 32 newspapers over the last decade. Of the 255 articles related to college drinking, only 49 mentioned one or more parenting strategies. The most frequently mentioned strategies were parental notification of their child's problem behavior by college administrators and communicating with older children about alcohol. The strategies mentioned least were monitoring and staying connected with college-aged children and talking about the consequences of binge drinking. The minimal coverage suggests a need for the use of media advocacy by public health professionals.  相似文献   
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Native Science Field Centers (NSFCs) were created to engage youth and adults in environmental science activities through the integration of traditional Native ways of knowing (understanding about the natural world based on centuries of observation including philosophy, worldview, cosmology, and belief systems of Indigenous peoples), Native languages, and Western science concepts. This paper focuses on the Blackfeet Native Science Field Center, the Lakota Native Science Field Center, and the Wind River Native Science Field Center. One of the long-term, overarching goals of these NSFCs was to stimulate the interest of Native American students in ways that encouraged them to pursue academic and career paths in science, technology, engineering, and mathematics (STEM) fields. A great deal can be learned from the experiences of the NSFCs in terms of effective educational strategies, as well as advantages and challenges in blending Native ways of knowing and Western scientific knowledge in an informal science education setting. Hopa Mountain—a Bozeman, Montana-based nonprofit—partnered with the Blackfeet Community College on the Blackfeet Reservation, Fremont County School District #21 on the Wind River Reservation, and Oglala Lakota College on the Pine Ridge Reservation to cooperatively establish the Native Science Field Centers. This paper presents a profile of each NSFC and highlights their program components and accomplishments.  相似文献   
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In this study, data in the form of (preservice teacher) student voices taken from mathematical autobiographies, written at the beginning of the semester, and end-of-semester reflections, were analyzed in order to examine why preservice elementary school teachers were highly motivated in a social constructivist mathematics course in which the teacher emphasized mastery goals. The findings suggest that students entered the course with a wide variety of feelings about mathematics and their own mathematical ability. At the end of the semester, students wrote about aspects of the course that “led to their growth as a mathematical thinker and as a mathematics teacher…” Student responses were coded within themes that emerged from the data: Struggle; Construction of meaning [mathematical language; mathematical understanding]; Grouping [working in groups]; Change [self-efficacy; math self-concept]; and the Teacher’s Role. These themes are described using student voices and within a motivation goal theory framework. The role of struggle, in relation to motivation, is discussed.  相似文献   
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  总被引:3,自引:3,他引:0  
  相似文献   
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