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31.
The aim of this study was to investigate the effects of target distance on temporal and impact force parameters that are important performance factors in taekwondo kicks. Forty-nine taekwondo athletes (age = 24.5 ± 5.9 years; mass = 79.9 ± 10.8 kg) were recruited: 13 male experts, 21 male novices, 8 female experts, and 6 female novices. Impact force, reaction time, and execution time were computed. Three-way repeated measure ANOVAs revealed significant ‘distance’ effect on impact force, reaction time, and execution time (p = 0.001). Comparisons between distance conditions revealed that taekwondo athletes kicked with higher impact force from short distance (17.6 ± 7.5 N/kg) than from long distance (13.1 ± 5.7 N/kg) (p < 0.001), had lower reaction time from short distance (498 ± 90 ms) and normal distance (521 ± 111 ms) than from long distance (602 ± 121 ms) (p < 0.001), and had lower execution time from short distance (261 ± 69 ms/m) than from normal distance (306 ± 105 ms/m) or from long distance (350 ± 106 ms/m) (p = 0.003 and p < 0.001, respectively). In conclusion, target distance affected the kick performance; as distance increases, impact force decreased and reaction time increased. Therefore, when reaction to a simple visual stimulus is needed, kicking from a long distance is not recommended, as longer time is required to respond.  相似文献   
32.
This article focuses on the predictive values of certain academic variables, high school ranks and admission tests, as related to grades at the end of the first year of the Licenciate in Medicine in Spain. Multiple regression equations were calculated for each first year subject. Multiple R values ranged from 0.41 to 0.61 which implies explained variance percentages of 16.5 and 37.5. The best predictor was found to be the high school grade point average in science courses, the global examination and the admission test average. The importance of taking into account these variables in the admission process is considered. Also the inclusion of some aptitudinal variables is discussed. Finally the need to establish prediction performance tables to be used in the counselling process of admitted students is considered.This is based on a paper presented at the 8th Annual Meeting of the Spanish Society for Medical Education held at Zaragoza on 26–27 October 1984.  相似文献   
33.
ABSTRACT

Ageism is a problem in aging societies. Clinical psychologists and undergraduate psychology students have shown negative attitudes toward older adults. However, no speci?c measure against ageist myths in the psychotherapeutic context is available. This study aims to develop and present the psychometric properties of the Ageist Myths about Psychotherapy Questionnaire (AMPQ).

These issues were examined by surveying 222 psychology graduates at higher education institutions about their attitudes and behaviors concerning psychotherapy with older adults, negative stereotypes toward aging, and attitudes toward dementia.

Using principal components analysis, 10 items were retained and one factor was obtained with an acceptable reliability index. Signi?cant associations were found between the AMPQ and negative stereotypes toward aging, and attitudes toward dementia.

Results revealed that universities and colleges with psychology programs have an ageist bias. Implications for college formation in aging, and older adults with mental health problems, are discussed and presented.  相似文献   
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35.
Working memory and planning are fundamental cognitive skills supporting fluid reasoning. We show that 2 games that train working memory and planning skills in school‐aged children promote transfer to 2 different tasks: an attentional test and a fluid reasoning test. We also show long‐term improvement of planning and memory capacities in 8‐year‐old children after playing adaptive computer games specifically tailored to entrain these cognitive functions. Working memory capacity expanded from 5 to 7 items by using our games. Furthermore, steady progression in the task indicates that this capacity can be trained rapidly. Planning abilities persisted in a nonmarkovian form of play, where a move is highly influenced by previous moves, avoiding back‐ups. Here, we introduce a public and growing platform ( http://www.matemarote.com.ar/ ) developed for this research which has the potential for wide use in educational research.  相似文献   
36.
Given the progressive loss of influence for the school relative to television in youngsters’ everyday lives, this article describes the procedure and the results of including cartoons in the physics curriculum in secondary education. Work was carried out intensively with a small group of pupils and sporadically with a larger group. In the first case, cartoons were used for identifying and discussing fictitious phenomena, problem‐solving, and assessment of the learning. In the second case, for identifying and discussing fictitious phenomena, a quasi‐experimental research design was followed. The results back the use of this didactic tool as an element for motivating and invigorating the classroom, for identifying the pupils’ alternative ideas and the assessment of their learning, as well as for a more critical way of watching television.  相似文献   
37.
Abstract

Many parameters may be used to measure the deterioration of water quality. One very important parameter is total dissolved solids (TDS). An increase in TDS beyond acceptable levels can have a significant impact on municipal, industrial, and agricultural use of water. In this review an overview of the problem of high TDS levels is given. Factors related to TDS which are considered include: (a) laboratory determination, (b) natural and man-influenced sources, (c) adverse effects, and (d) treatment process removal techniques. A brief summary of the TDS problem associated with the Colorado River is also considered.  相似文献   
38.
Public libraries in Europe have supported lifelong learning for the past 500 years. Since the Lisbon Strategy emphasized the role of lifelong learning in economic policy, public libraries have been repositioning their services to respond to this new context. In some cases, these roles are undertaken with limited legislative or strategic changes and stagnant levels of funding. As a result, the sector receives little recognition of its role in lifelong learning amongst policy-makers. A consortium representing 12 EU countries, ENTITLE, was formed to increase awareness of the role public libraries play in this area. It undertook a survey amongst its members to scope relevant policies, strategies and evaluation efforts. This paper presents an analysis of this survey. It shifts the focus away from debates about the instrumental value of libraries. Instead, it explores the role that evaluation plays in policy implementation. It argues that participatory evaluation can help reduce conflict and ambiguity amongst the stakeholders involved in delivering symbolic implementation of policies. So far, however, current evaluation efforts in most ENTITLE countries have played a limited role in supporting coordination and, for some countries, may in fact remove resources away from more effective development efforts, including pedagogical training.  相似文献   
39.
This article analyses the background of teacher centres (CEPs) in Spain and presents the synthesis of conclusions drawn from the evaluation of such centres and continuous education in Andalusia (Spain), carried out according to the model of democratic evaluation defended by Barry McDonald. Three issues are dealt with: (a) the change of government policies concerning the running of teacher centres, from autonomy to control; (b) the changes in the way teachers' continuous education and advice strategies are understood; and (c) how teacher commitment to innovation and education reform evolved with time. All this takes place within the framework of political confrontations between the two main parties in Spain: the Socialists (PSOE) - who institutionalized the CEPs and created education reform, and who continue to govern in Andalusia - and the Conservatives (PP) - who are currently in power in central government and who neither supported educational reform nor the teacher centres. In this context, the analysis of the use of the CEPs as a political weapon in their confrontation is one of the main objectives of the evaluation.  相似文献   
40.
Tapia  Javier 《The Urban Review》2000,32(1):25-44
Recent research indicates that learning and the academic performance of Mexican-American students are influenced by the interplay of economic, cultural, linguistic, and educational factors. In this work, a household analysis is used to illustrate how students' schooling and academic achievement are influenced by household members' activities at home, in the community, and in the schools. The study reports that a household analysis help us understand the relative weight of these factors in shaping students' school performance, and that it also accounts for differential academic achievement in any Mexican-American community. This household analysis indicates that level of family stability and the social and economic conditions of poor communities are the strongest factors affecting students' learning and academic achievement.  相似文献   
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