全文获取类型
收费全文 | 325篇 |
免费 | 10篇 |
专业分类
教育 | 262篇 |
科学研究 | 6篇 |
体育 | 34篇 |
文化理论 | 5篇 |
信息传播 | 28篇 |
出版年
2023年 | 7篇 |
2022年 | 6篇 |
2021年 | 10篇 |
2020年 | 16篇 |
2019年 | 17篇 |
2018年 | 15篇 |
2017年 | 18篇 |
2016年 | 15篇 |
2015年 | 14篇 |
2014年 | 16篇 |
2013年 | 92篇 |
2012年 | 13篇 |
2011年 | 5篇 |
2010年 | 11篇 |
2009年 | 8篇 |
2008年 | 12篇 |
2007年 | 5篇 |
2006年 | 8篇 |
2005年 | 4篇 |
2004年 | 4篇 |
2003年 | 2篇 |
2002年 | 1篇 |
2001年 | 4篇 |
2000年 | 2篇 |
1999年 | 3篇 |
1997年 | 1篇 |
1996年 | 3篇 |
1994年 | 2篇 |
1993年 | 2篇 |
1992年 | 1篇 |
1990年 | 2篇 |
1989年 | 1篇 |
1987年 | 1篇 |
1986年 | 4篇 |
1984年 | 2篇 |
1983年 | 1篇 |
1980年 | 1篇 |
1976年 | 1篇 |
1974年 | 1篇 |
1973年 | 1篇 |
1972年 | 1篇 |
1940年 | 2篇 |
排序方式: 共有335条查询结果,搜索用时 15 毫秒
101.
Irene Rodríguez-Gómez Soraya Martín-Manjarrés María Martín-García Sara Vila-Maldonado Ángel Gil-Agudo Luis M. Alegre 《Journal of sports sciences》2019,37(7):717-725
Spinal cord injury (SCI) derives in loss of bone mineral content (BMC) and bone mineral density (BMD). However, physical activity is an important determinant in bone mass acquisition, which is partially mediated through the lean mass (LM). The aim was to examine the effect of cardiorespiratory fitness (CRF) on BMD and BMC arms of adult males with SCI and able-bodied controls using the arm LM as a mediator variable. Thirty able-bodied men and thirty men with SCI participated. BMC and BMD were analysed by DXA, and indirect calorimetry was used to calculate VO2peak during a progressive arm-cranking test. When groups were divided by the amount of LM, the subgroup with highest LM had significantly higher arm BMC compared to the lowest LM subgroup (p ≤ 0.05) in both SCI and able-bodied groups. Moreover, same differences were found when confidence intervals were analysed. Only in the SCI group, arm LM mediated the relationship between bone mass and CRF at 30.9%, as indicated by the Sobel test (z = 2.17 and z = 2.04 for BMC and BMD, respectively). In conclusion, LM mediates the indirect association between CRF and bone health, specifically in the arms. This finding highlights the importance of having an adequate CRF for the maintenance of good bone health in SCI men. 相似文献
102.
In recent years, the University of Houston has engaged in a campus-wide effort to raise the university to Tier-One status. The initiative has led to a significant increase in faculty's research output in the field of psychology. This dynamic change inspired the Psychology Librarian and Collection Coordinator to embark on a citation analysis to investigate two questions: how has faculty been using information for their research and how does the library's collection meet the research needs of faculty? In addition to reporting these findings, the article also describes how to use features in Scopus to simplify the data collection process. 相似文献
103.
Irene Biemmi 《Gender and education》2015,27(7):812-827
When politicians discuss Italy's position in terms of achieving equality between men and women, the school environment is rarely called into question or mentioned. This is despite the fact that gender inequality remains a prominent feature of the Italian education system. The reason for this failure to perceive the problem, and the consequent lack of investment in policies for gender equality in education, derives from a massive misunderstanding: school is perceived by the public and the political class as one of the few environments within the highly sexist Italian social fabric in which equality has been achieved. On closer examination, however, it is clear that the Italian school is merely the image of a sexist society which in turn acts as the driving force for a traditional and stereotypical view of male and female roles. This article will discuss this perspective and investigate three areas of education that are problematic in gender terms: gendered educational choices; sexist stereotypes transmitted through textbooks; and the lack of adequate training for teachers. 相似文献
104.
105.
Providing a rich context has become a sine qua non of principled teaching of applied statistical thinking. With increasing opportunities to access secondary data, there should be increasing opportunity to work with rich context. We review the contextual information provided in 41 data sets suitable for introductory tertiary statistics teaching, available in the R “datasets” package, and investigate the source information for four data sets. We find failure to describe and retain important contextual information, including aspects that raise questions about the credibility of the data for statistical inference. The sanitization of data reduces the opportunities for learning meaningful lessons in statistical thinking and the real-world application of statistics. We advocate for teachers and users of such data to be curious about the provenance and context, and for the curators and distributors to examine, where possible, the primary sources, to accurately preserve the context and optimize pedagogical opportunities. 相似文献
106.
Virginia A. Aparicio Pilar Ruiz-Cabello Milkana Borges-Cosic Ana Andrade Irene Coll-Risco Pedro Acosta-Manzano 《Journal of sports sciences》2017,35(9):880-887
This study aimed to analyse the association of different components of physical fitness, body composition, cardiometabolic markers and the Mediterranean diet with bone mineral density (BMD) in perimenopausal women, and to test which of these components are independently associated with BMD. The sample comprised 197 perimenopausal women (52.6 ± 4.5 years). Physical fitness was assessed with the “Senior Fitness Test” battery and the handgrip strength and Bruce tests. Fat and lean mass and BMD were measured using dual-energy X-ray absorptiometry. We analysed the markers of metabolic syndrome, C-reactive protein, and components of the Mediterranean diet. Handgrip muscle strength (β = 0.212, P = 0.005), body weight (β = 0.244, P = 0.001), BMI (β = 0.180, P = 0.011) and lean mass (β = 0.379, P < 0.001) were positively associated with BMD. No associations were observed between cardiometabolic markers or the Mediterranean diet with BMD (all P > 0.05). When all relevant indicators of BMD were simultaneously considered, lean mass was the only 1 showing an independent association with BMD (β = 0.392, P < 0.001), explaining 14% of the BMD variability. In conclusion, muscle strength might be a marker of BMD in perimenopausal women. However, lean mass was the only factor independently associated with BMD. Future research to determine whether increasing lean mass through specific exercise-based interventions contributes to increasing BMD is warranted. 相似文献
107.
Single subject (SS) designs are popular in educational and psychological research. There exist several statistical techniques designed to analyze such data and to address the question of whether an intervention has the desired impact. Recently, researchers have suggested that generalized additive models (GAMs) might be useful for modeling nonlinear effects that are common with SS designs. This study sought to extend the use of GAM from SS to a research design in which individuals may be placed in separate groups and receive different interventions. Results of the simulation study found that using a mixed model form of GAM (GAMM) resulted in higher power for detecting actual effects in the population than was true for either GAM or a Bayesian GAM estimator. Thus, GAMMs are recommended for use with SS designs when interventions are expected to induce nonlinear relationships between time and the outcome variable and individuals receive different treatments. 相似文献
108.
Irene M. Pepperberg 《Learning & behavior》1987,15(4):423-432
An African Grey parrot, previously taught to use vocal English labels to discriminate more than 80 different objects and to respond to questions concerning categorical concepts of color and shape, was trained and tested on relational concepts ofsame anddifferent. The subject, Alex, replied with the correct English categorical label (“color,” “shape,” or “mah-mah” [matter]) when asked “What’s same?” or “What’s different?” about pairs of objects that varied with respect to any combination of attributes. His accuracy was 69.7%–76.6% for pairs of familiar objects not used in training and 82.3%–85% for pairs involving objects whose combinations of colors, shapes, and materials were unfamiliar. Additional trials demonstrated that his responses were based upon the question being posed as well as the attributes of the objects. These findings are discussed in terms of his comprehension of the categories of color, shape, and material and as evidence of his competence in an exceptional (non-species-specific) communication code. 相似文献
109.
Abstract The use of visual and auditory information in learning to spell is explored, together with the effect, if any, of semantic information. One hundred boys aged from seven to eleven were tested, using eight nonsense words with contrived meanings. It was expected that visual information would be helpful in spelling irregular words and that, with age, use of strategies would become more flexible, incorporating semantic (along with visual and phonological) information. Contrary to expectations, it was only with the 10‐ and 11‐year‐olds that visual information produced better results than auditory presentation alone but for them, in conjunction with oral responses, it did aid spelling. Such a finding is in keeping with Ehri's Amalgamation Theory (1980) which suggests that, in order to be able to manipulate printed words, the learner must draw on several strategies and accepts that no single strategy can be used to overcome all irregularities in written English. 相似文献
110.
The Honey and Mumford Learning Style questionnaire was applied to undergraduate students at the first and third year level courses in Nursing, Optometry and Podiatryin the Queensland University of Technology Faculty of Health Science, and to students in the post‐graduate courses in Nursing and Nutrition and Dietetics. With one exception, there were no significant differences between first and third year student results for any learning style or course. The mean scores from all courses fell within the normal range defined by Honey and Mumford, but some differences were identified in the preferred learning styles across the different disciplines.
The implications of these findings are discussed with respect to the use of different teaching techniques such as structured lectures, practical exercises, case discussions and role‐play, as the findings may be used to predict the type of instructional techniques which would be most effective. Recommendations are made on the most appropriate of these techniques for different health science courses. 相似文献