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During the 1997 Federation Internationale des Societes d'Aviron (FISA) World Junior Rowing Championships, the anthropometric characteristics of 245 female junior rowers aged 17.5 ± 0.8 years (mean ± s) were assessed. Twenty-seven body dimensions (body mass, 6 heights or lengths, 4 breadths, 10 girths and 6 skinfolds) were measured in total. The elite female junior rowers were taller (174.5 ± 6.2 cm) and heavier (69.5 ± 6.2 kg), with greater length, breadth and girth dimensions, but lower skinfold thicknesses than a representative sample of Flemish (Belgian) girls of the same chronological age. An anthropometric profile chart was constructed that was rowing-specific and norms were established. Compared with scullers, sweep rowers were heavier (+4.2 kg) and taller (+2.8 cm), with greater length, breadth (except for femur width) and girth dimensions (except for calf girth). Sweep rowers also had greater skinfold thicknesses (except for the thigh and calf skinfolds). Finalists were heavier (+3.6 kg) and taller (+3.9 cm), with greater length, breadth (except for femur width) and girth dimensions (except for calf girth) than non-finalists. No significant differences were found for skinfold thicknesses between finalists and non-finalists.  相似文献   
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This paper examines the perceptions of three Somali mothers on science, science topics taught in urban US schools and the challenges that they encountered in dealing with science and their own social and cultural practices. The article focuses on Somali mothers, who were highly interested in articulating how science and science professions could be a path to both the personal and community successes and how science could positively affect Somali girls in the areas of women’s health. As an exploratory case study research, we used grounded theory approach to understand Somali mothers’ perceptions of science. We interviewed the mothers over a year and analyzed data as an iterative and systematic process. The findings of the study show that the Somali mothers perceived science from everyday usefulness points of view rather than science knowledge alone, thus home-science connections were critical to them as Somali mothers. They perceived science as an empowering tool for girls so they could make important decisions about women’s reproductive health issues. A broader implication of this study could be for urban science teachers and educators to modify their science instructional and curricular decisions so science learning is connected to Somali students’ culture and empowers girls.  相似文献   
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Early identification of the lack of behavioral competencies followed by subsequent intervention is critical to reducing the number of students at risk for increasing disciplinary responses and school failure. This study examined scores on the Behavior Objective Sequence (BOS) of elementary school students referred for out‐of‐classroom disciplinary intervention. The results of this study indicated a distinction between the BOS scores of students referred for disciplinary problems and the scores of students who were never referred. In addition, differences among demographic variables of the sample population were found. These findings provide initial data that support use of the BOS as a strength‐based assessment for identifying behavioral competencies of students who may be at risk for increasing rates of disciplinary referrals so skill‐focused intervention strategies may be implemented in a timely manner. © 2008 Wiley Periodicals, Inc.  相似文献   
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Longitudinal studies provide unique opportunities but are also faced with several limitations. The purpose of this study was to document three of these issues ("imperfect" design, evolution of data collection methods, representativeness) by means of the Leuven Longitudinal Study on Lifestyle, Fitness and Health (LLSLFH). The LLSLFH (1969 - 2004) comprises observations on males between 12 and 18 years and at 30, 35, 40, and 47 years, and on females at 16 and 40 years. In the most recent phase of the study, spouses and offspring were also included. The different phases and evolving research questions throughout the LLSLFH required an appropriate adaptation of the research design. The associated evolution of data collection methods largely reflects the changing ideas about physical fitness, body composition, and physical activity, the continuing search for new and better measurement techniques, and the need for adaptations with age. Ongoing study participants are representative in terms of body composition and, except for adolescence in males, also physical activity. No straightforward answer can be given concerning physical fitness. In both sexes, socio-economic status is above average. When informed about the possible "pitfalls" of longitudinal research in advance, several measures could be taken to prevent or limit them as much as possible.  相似文献   
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The purpose of this study was to validate and cross-validate the Beunen-Malina-Freitas method for non-invasive prediction of adult height in girls. A sample of 420 girls aged 10-15 years from the Madeira Growth Study were measured at yearly intervals and then 8 years later. Anthropometric dimensions (lengths, breadths, circumferences, and skinfolds) were measured; skeletal age was assessed using the Tanner-Whitehouse 3 method and menarcheal status (present or absent) was recorded. Adult height was measured and predicted using stepwise, forward, and maximum R (2) regression techniques. Multiple correlations, mean differences, standard errors of prediction, and error boundaries were calculated. A sample of the Leuven Longitudinal Twin Study was used to cross-validate the regressions. Age-specific coefficients of determination (R (2)) between predicted and measured adult height varied between 0.57 and 0.96, while standard errors of prediction varied between 1.1 and 3.9 cm. The cross-validation confirmed the validity of the Beunen-Malina-Freitas method in girls aged 12-15 years, but at lower ages the cross-validation was less consistent. We conclude that the Beunen-Malina-Freitas method is valid for the prediction of adult height in girls aged 12-15 years. It is applicable to European populations or populations of European ancestry.  相似文献   
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The aim of this article is to explain the evolution of French Levant policy from crusade to diplomacy. Traditionally French policy towards the Levant was dominated by the hope of the Most Christian Kings to re-conquer the Holy Land from the “infidels” until the early sixteenth century. In the course of the sixteenth century this changed and a new approach of treating Muslim powers in the same way as Christian neighbours emerged. The reason why the latter concept became predominant shall be explained by showing the examples of two French attacks on Beirut in the years 1403 and 1520. Although both were initially undertaken in the spirit of the crusades, France reversed its policy in the aftermath of the 1520 failure and sought co-operation with a Muslim state. Severely threatened on several borders by Habsburg Spain and the Holy Roman Empire, France henceforth looked to the Ottomans as allies and gave up on further crusading projects. This reconsideration of its foreign policy aims culminated in the French–Ottoman treaty of 1536.  相似文献   
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