Energy Cost of Rebound-Running     

Victor L. Katch  John F. Villanacci  Stanley P. Sady 《Research quarterly for exercise and sport》2013,84(2):269-272

Using Sonstroem, Harlow, and Josephs' (1994) expanded version of the Exercise and Self-Esteem Model (EXSEM; Sonstroem &; Morgan, 1989), we explored how 9 older adults (6 women and 3 men, aged 65–72 years) involved in a resistance training program experienced and perceived changes in physical self-worth (i.e., improved strength, functional competency, physical condition, and body satisfaction). We conducted three in-depth interviews with each participant over the course of the program. In individual log books, participants recorded the weight lifted and the number of repetitions for each exercise. Our findings showed the course of changes in physical self-perceptions in these older adults and how actual individual changes in strength performance related to perceived changes in important psychological outcomes.  相似文献   

Physiological Effects of Deep Water Running following a Land-Based Training Program     

Timothy J. Quinn PhD  Daniel R. Sedory  Brian S. Fisher 《Research quarterly for exercise and sport》2013,84(4):386-389

Abstract

The purpose of this study was to examine differences in knowledge representation and problem solutions in expert and novice youth baseball players. Ninety-four players in two age divisions, 7–8 years of age and 9–10 years of age, were assigned to three levels of expertise: high; average; and low skilled. Each subject participated in an interview session to elicit knowledge representation and solutions to five different defensive game situations. Interviews were transcribed and analyzed for content, solution to the problem, errors in problem solution, and qualitative trends. The frequency of advanced solutions to each of the five situations were analyzed in separate chi-square tests for age and expertise. Differences among the levels of expertise were found for the accuracy of solutions to three complex situations. Age was significant for only one situation. Patterns of knowledge content accessed during advanced and less advanced responses indicated both experts and novices were in a beginning stage of developing baseball knowledge structures. Errors in problem solutions indicated children had difficulty monitoring critical conditions and making correct inferences. Players' and teammates' ability to execute baseball skills seemed to influence the content and structure of tactical knowledge accessed during problem solution.  相似文献   

New Media,Micromobilization, and Political Agenda Setting: Crossover Effects in Political Mobilization and Media Usage     

Victor Bekkers  Henri Beunders  Arthur Edwards  Rebecca Moody 《The Information Society》2013,29(4):209-219

In November 2007, Dutch secondary school students revolted against a requirement known as the “1040-hour norm.” New Web technologies, like instant messaging, YouTube, and social networking sites, played an important role in the mobilization effort. In this article, the authors argue that these technologies facilitate a shift toward micromobilization by individuals and small groups. In this “1040-hour norm” case study, the authors analyze how the course of the political agenda-setting process is being transformed through the interplay between processes of meso- and micromobilization, and through new micro-to-mass media crossover effects. When supported by micromedia, the effects of micromobilization can create strategic surprises for traditional intermediary organizations and policymakers.  相似文献   

A review on the basketball jump shot     

Victor H.A. Okazaki  André L.F. Rodacki  Miriam N. Satern 《Sports biomechanics / International Society of Biomechanics in Sports》2013,12(2):190-205

The ability to shoot an effective jump shot in the sport of basketball is critical to a player's success. In an attempt to better understand the aspects related to expert performance, researchers have investigated successful free throws and jump shots of various basketball players and identified movement variables that contribute to their success. The purpose of this study was to complete a systematic review of the scientific literature on the basketball free throw and jump shot for the purpose of revealing the critical components of shooting that coaches, teachers, and players should focus on when teaching, learning, practising, and performing a jump shot. The results of this review are presented in three sections: (a) variables that affect ball trajectory, (b) phases of the jump shot, and (c) additional variables that influence shooting.  相似文献   

Effects of independent word practice with segmented and whole-word sound feedback in disabled readers     

Victor H.P. van Daal  Pieter Reitsma 《Journal of Research in Reading》1990,13(2):133-148

Reading-disabled children seem to have considerable difficulties in acquiring phonological recoding skills, which are considered to be very important in becoming a proficient reader. It is hypothesized that speech feedback may support the development of phonological recoding skills. The aim of the present study is to investigate the use of speech feedback during independent word reading and its effects on the remediation of reading skill. Three different conditions for independent practice were employed. For 17 subjects high-quality digitized speech was available on call. When speech feedback was requested either whole-word sound was provided (n = 8) or segmented-word sound was presented (n = 9). A control group (n=14) did not receive speech feedback at all. In a posttest both practised and nonpractised words were presented. Both help call behaviour during practice and changes in reading rate and accuracy from pretest to posttest were analyzed. It was found that speech feedback requests were not dependent on word difficulty. More calls for whole-word sound were made than for segmented-word sound, while latency times for whole-word sound requests were shorter than for segmented-word sound requests. Both forms of speech feedback were equally effective in reading practice words which were initially read incorrectly. However, there was a tendency for the learning effect on nonpractised initially hard-to-read words to be largest when segmented-word sound had been available. It is concluded that, whenever the goal of reading instruction is to memorize particular words, whole-word sound as well as segmented-word sound can be used. However, when more productive skills are aimed at, the most promising way of giving support is to present segmented-word sound, although only a nonsignificant tendency for transfer was found in the present study.  相似文献   

Prediction of attributional consequences in an actual achievement setting     

Douglas J. Palmer  Victor Willson 《Contemporary educational psychology》1982,7(4):334-345

One hundred ninety-six undergraduates who received feedback on a midterm examination participated in this study. A random subgroup formed a cross-validation sample. Through the use of regression analysis, it was found that both objective and subjective performance ratings did not predict subjects' expectancy ratings but did substantially predict their ratings of pride/shame. Inclusion of attributions enhanced prediction of expectancy but not pride/shame ratings of subjects. On the basis of the findings from this study, a partial reformulation of Weiner's attributional model was proposed. In addition, numerous methodological concerns associated with attributional research were examined.  相似文献   

STUDENT ASSESSMENT IN MEDICAL EDUCATION: A CANADIAN CASE STUDY     

Victor R. Neuféld M.D. 《Assessment & Evaluation in Higher Education》1982,7(3):203-215

The assessment system of a Canadian medical education program is described. The M.D. Program at McMaster University features the central use of clinical cases as the basis for learning, and the fostering of independence in learning by students. The assessment system, designed to match the objectives and methods of learning, is guided by several principles. These include a balanced emphasis on a range of objectives, the use of on‐going informal feedback, defined and shared responsibilities in assessment, and the design and use of measures which most appropriately match the objectives. More than ten years of experience has pointed out several lessons: if self‐directed learning is held as important, there is a trade‐off between excessively specific objectives, on the one hand, and too little guidance on the other. This attempt to create a balance between these extremes produces a degree of unevenness in the assessment system. External influences such as the national licensing examinations have some effect on the learning climate. It is predicted that the basic elements of the assessment system will remain in place, but some specific changes will occur. These include a clearer statement of objectives on which assessment can be based, the improvement of measurement tools, and an increased emphasis on the training of those who participate in the assessment system.  相似文献   

Physical discipline and children's adjustment: cultural normativeness as a moderator   总被引：2，自引：0，他引：2  

Lansford JE  Chang L  Dodge KA  Malone PS  Oburu P  Palmérus K  Bacchini D  Pastorelli C  Bombi AS  Zelli A  Tapanya S  Chaudhary N  Deater-Deckard K  Manke B  Quinn N 《Child development》2005,76(6):1234-1246

Interviews were conducted with 336 mother-child dyads (children's ages ranged from 6 to 17 years; mothers' ages ranged from 20 to 59 years) in China, India, Italy, Kenya, the Philippines, and Thailand to examine whether normativeness of physical discipline moderates the link between mothers' use of physical discipline and children's adjustment. Multilevel regression analyses revealed that physical discipline was less strongly associated with adverse child outcomes in conditions of greater perceived normativeness, but physical discipline was also associated with more adverse outcomes regardless of its perceived normativeness. Countries with the lowest use of physical discipline showed the strongest association between mothers' use and children's behavior problems, but in all countries higher use of physical discipline was associated with more aggression and anxiety.  相似文献   

Phillips,D.C. philosophy,science, and social inquiry. New York: Pergamon press, 1987. 210pp. $14.95     

Victor L. Willson 《科学教学研究杂志》1989,26(7):653-655

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The Education of Taste     

Victor Q. Uinn 《Cambridge Journal of Education》1981,11(3):211-226

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