Variable training: effects on velocity and accuracy in the tennis serve     

Hector Hernández-Davo  Tomás Urbán  Jose Manuel Sarabia  Casto Juan-Recio  Francisco Javier Moreno 《Journal of sports sciences》2013,31(14):1383-1388

Abstract

Variable practice has been shown to be an effective strategy to improve open motor skills. However, the usefulness of this procedure in closed motor skills remains controversial. The following study has the objective of analysing the effects of variability practice in the improvement of a closed skill. The skill studied has been the tennis serve. Thirty young tennis players (13 ± 1.52 years), divided in two groups, took part in this study. One group practiced in variable conditions and the other group in consistency conditions. Both groups performed 12 training sessions (60 serves/session). The variable practice group improved their accuracy significantly compared with the consistency group (F_3.25 = 3.078; P = 0.035). The velocity of serve increased after training in both groups (F_3.25 = 15.890; P = 0.001). The practice in variable conditions seems to be effective in improving the performance of the tennis serve.  相似文献   

Small and Medium-Sized Enterprises in Rural Business Clusters: The Relation Between ICT Adoption and Benefits Derived From Cluster Membership     

Charles Steinfield  Robert LaRose  Han Ei Chew  Stephanie Tom Tong 《The Information Society》2013,29(2):110-120

This study examines the relationships between information and communication technologies (ICT) usage, the benefits a company derives from membership in a rural business cluster, and the success of rural companies. Analysis of 333 rural businesses located in northern lower Michigan showed a strong relationship between (a) ICT adoption and benefits derived from the membership in business clusters, (b) ICT adoption and self-reported business success, and (c) benefits derived from business clusters and business success. Although analysis indicates that these relationships may be industry specific, results suggest that ICT adoption by rural enterprises may have advantages for the region's social capital and business success and may help reduce the digital divide experienced in rural communities.  相似文献   

SIDE-VIEW: Evaluation of a system to develop team players and improve productivity in Internet collaborative learning groups     

Martin Lea  Paul Rogers  & Tom Postmes 《British journal of educational technology : journal of the Council for Educational Technology》2002,33(1):53-63

This paper briefly summarizes the initial development of a computer-supported collaborative learning environment and evaluates its effects in relation to the productivity of CSCL groups. The design of the SIDE-VIEW system is driven by the social identity approach to understanding group behaviour and is premised upon the need to establish congruity between the self-definition of group members and their collaborative learning tasks. We begin by outlining the rationale for the system in relation to productivity and the emergence of team players within collaborative learning groups. We then describe aspects of the design that are intended to enhance both, and report on a field trial of the initial prototype on international groups of higher education students. The preliminary results of the field study indicate that aspects of the design encourage the emergence and influence of team players within groups, with consequential improvements to the quality of the group output. The role of team players in CSCL groups is contrasted with that of group leaders.  相似文献   

The Bat'a Company in Zlín: a shoe company or a school company?     

Tomáš Kasper  Dana Kasperová 《History of education》2018,47(3):321-348

The first part of the study focuses on the characteristics and analysis of Zlín as an example of a company town. Life in the company town is characterised as a means of forming ‘a new man’ in Bat'a’s Zlín. The second section analyses the aims of worker education in Bat'a’s Zlín (in the so-called Bat'a school of work) and highlights the methods and conditions of education for young men and women, focusing on the area of company education. The third part deals with the question of rationalisation (or scientific management) – an extended concept in the production, social and economic areas of interwar Czechoslovakia – in the context of Bat'a’s Zlín. Attention is given to the technocratic movement and to the problems of psycho-technology and its application in the production process and employee selection in the Bat'a Company.  相似文献   

Participation in international teleconferences and discussions: Implicit assumptions     

Elizabeth Anderson  Jacques du Plessis  Tom Nickel 《Educational technology research and development : ETR & D》2001,49(3):118-123

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Switching Between Everyday and Scientific Language     

Eric J. Blown  Tom G. K. Bryce 《Research in Science Education》2017,47(3):621-653

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Web-Based Portfolios: A Vehicle for Examining Prospective Elementary Teachers' Developing Understandings of Teaching Science     

Carla Zembal-Saul  Leigh A. Haefner  Lucy Avraamidou  Mary Severs  Tom Dana 《Journal of Science Teacher Education》2002,13(4):283-302

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Alternative models of entrance exams and access to higher education: the case of the Czech Republic     

Tomá? Kone?ny  Josef Basl  Jan Myslive?ek  Natalie Simonová 《Higher Education》2012,63(2):219-235

The study compares the potential effects of a university admission exam model based on program-specific knowledge and an alternative model relying on general study aptitude (GSA) in the context of a strongly stratified educational system with considerable excess of demand over supply of university education. Using results of the Sonda Maturant 1998 survey, we show that in the specific context of the Czech Republic, displaying the above characteristics in the given period, an admission exam model based on general study aptitude tests may improve the access of talented individuals with lower socioeconomic status to university education. Our simulations show that with the GSA model (provided the model assumptions are met), the relative chances of an applicant with a university-educated father would be only by one-fourth higher than the relative chances of a student with a less educated father, as compared to the more than a one-third difference in case of the model emphasizing program-specific knowledge. The odds ratio for the GSA model is by 28% points lower for mother’s education.  相似文献   

Strengthening Capstone Skills in STEM Programs     

Tom A. Eppes  Ivana Milanovic  H. Fredrick Sweitzer 《Innovative Higher Education》2012,37(1):3-10

In this article we describe a curricular strategy that improves the full range of skillsets critical to capstone success. Improved Capstone (ICap) was developed and implemented across the thermo-fluids topical area in the undergraduate Mechanical Engineering Technology Program at the University of Hartford. ICap experiential courses sequentially introduce challenging and open-ended assignments that foster cognitive learning. Using a scaffolding structure, assignments are organized into three modules: (1) classical, (2) transitional, and (3) design of an experiment. ICap enables students to assume greater responsibility for their learning experiences and liberates the instructor to become a mentor. Consequently, higher level skills important in the capstone course are strengthened: critical thinking, quantitative reasoning, teamwork, communications, information literacy, and design process.  相似文献   

Rethinking library service to distance education students: analyzing the embedded librarian model     

Sullo E  Harrod T  Butera G  Gomes A 《Medical reference services quarterly》2012,31(1):25-33

Since fall 2009, reference librarians at The George Washington University's Himmelfarb Health Sciences Library have been embedded in online classes through Blackboard within the School of Nursing and School of Medicine and Health Sciences. The authors sought to determine the types of questions asked of the librarian, with the goal of informing future interactions with distance education classes to help develop a standard "protocol" for working with this population of students. Eighty-two questions were categorized and qualitatively analyzed. The findings have prompted librarians to explore tools such as Elluminate Live!, a tool that allows librarians to provide synchronous instruction within the Blackboard environment.  相似文献