全文获取类型
收费全文 | 283篇 |
免费 | 1篇 |
国内免费 | 1篇 |
专业分类
教育 | 181篇 |
科学研究 | 34篇 |
体育 | 39篇 |
文化理论 | 12篇 |
信息传播 | 19篇 |
出版年
2024年 | 1篇 |
2022年 | 6篇 |
2021年 | 4篇 |
2020年 | 10篇 |
2019年 | 11篇 |
2018年 | 19篇 |
2017年 | 22篇 |
2016年 | 16篇 |
2015年 | 13篇 |
2014年 | 15篇 |
2013年 | 35篇 |
2012年 | 7篇 |
2011年 | 22篇 |
2010年 | 6篇 |
2009年 | 11篇 |
2008年 | 14篇 |
2007年 | 9篇 |
2006年 | 5篇 |
2005年 | 8篇 |
2004年 | 3篇 |
2003年 | 4篇 |
2002年 | 2篇 |
2001年 | 6篇 |
2000年 | 3篇 |
1999年 | 3篇 |
1998年 | 3篇 |
1997年 | 1篇 |
1996年 | 1篇 |
1994年 | 5篇 |
1993年 | 1篇 |
1992年 | 2篇 |
1991年 | 4篇 |
1989年 | 2篇 |
1988年 | 1篇 |
1985年 | 1篇 |
1984年 | 1篇 |
1981年 | 1篇 |
1980年 | 1篇 |
1977年 | 3篇 |
1976年 | 1篇 |
1973年 | 1篇 |
1970年 | 1篇 |
排序方式: 共有285条查询结果,搜索用时 15 毫秒
11.
David Sánchez-Oliva Rebecca M. Leech Alberto Grao-Cruces Irene Esteban-Cornejo Carmen Padilla-Moledo Oscar L. Veiga 《Journal of sports sciences》2020,38(9):1062-1069
ABSTRACTThe aims of this study were to identify profiles of sedentary behaviour (SB) patterns, based on leisure-time self-reported SB modalities (screen, educative, social, and relaxing) and to evaluate changes in these profiles over 2 years among Spanish youth aged 8–18 years. Latent profile analysis (LPA), a data-driven analytic approach, was used to identify groups of boys and girls (n = 1553; 48% girls; mean±SD age: 12.56 ± 2.49 y) with distinct SB profiles using the SB modalities (time/d) as input variables. Latent transition analysis, an extension of LPA that uses longitudinal data, was used to analyse 2-year changes in these profiles. At baseline, four and three SB profiles were found among boys (labelled: screen, educative, social, and relaxing) and girls (labelled: screen/social, educative, and relaxing), respectively. Overall, more girls (range: 48%-67%) had the same profile over time, than boys (40%-52%). Participants with a screen or relaxing SB profile at baseline were more likely to have an educative profile after 2 years. Youth with a social and an educative SB profile at baseline were more likely to transition to profiles characterized by higher screen and social SB, respectively. Using a novel and person-centered approach, this study identified gender-specific SB profiles that were moderately stable over time. 相似文献
12.
Alberto González 《Communication Studies》2018,69(4):362-365
This reflection essay describes the Central States Region as an area rich in intercultural communication. González describes Mexican American migrant farmworker organizing as an intercultural activity since the union activists attempted to influence both Mexican heritage and European heritage audiences. González also describes the many interculturalists working in the Midwest who influenced his early research. 相似文献
13.
Miguel-Ángel Gómez Otavio Battaglia Alberto Lorenzo Jorge Lorenzo Sergio Jiménez Jaime Sampaio 《Journal of sports sciences》2015,33(17):1844-1852
Ball screens are one of the most frequently used tactical behaviour in elite basketball games. The aim of the present study was to identify their predictors of success related to time, space, players, and tasks performed. The sample was composed of 818 ball screens corresponding to 20 close games (mean differences in score of 3.1 ± 0.8 points) randomly selected from the playoff games of the Spanish Basketball League (2008–2011). Classification tree analysis (CHAID) was used to analyse which variable or combination of variables, better predicts effectiveness during ball screens. The main results allowed identifying interactions with dribbler actions after the screen and the orientation of the screen on the ball. The results showed no interaction with game quarter and quarter minute temporal-related variables in both analyses. The present findings allow improving coaches’ strategic plans that involve selecting the most appropriate offensive approach when performing ball screens. 相似文献
14.
Alberto Felisberto Cupane 《Cultural Studies of Science Education》2011,6(2):435-440
I am reflecting here my struggle to understand the issue of language in the science classroom and in our lives from three
different perspectives: before and after Mozambican independence and after completion of my doctoral research. The main method
used is auto|ethnographic inquiry in which I use the events in my life to question what is happening in my society. I have
used Maria Rivera Maulucci’s paper, Language experience narratives and the role of autobiographical reasoning in becoming an urban science teacher as a reference. This paper helps me to show how isolated and generalized is the Mozambican situation and the value of our
struggle in giving value to local languages. 相似文献
15.
Jean-Luc Gurtner Alberto Cattaneo Elisa Motta Laetitia Mauroux 《Vocations and Learning》2011,4(2):113-131
In the ‘dual’ system of vocational training, working in company represents the major part of training. At the workplace, apprentices
are expected to acquire the typical skills of their profession but, at the same time, to contribute to the production of the
company. For this reason apprentices are expected to carry out activities on their own from early on in their training and
to ask for help only when they need it. Learning to ask questions and to seek help appropriately is, therefore, an important
competence for learners to acquire during vocational training, just as it is important for the company to offer the learner
every opportunity to ask for help when needed. In this study, we used mobile phones to follow at a distance 19 apprentices
in car mechanics at the workplace. We then analyzed a corpus of approximately 77 hours of work, in search of all questions
and requests they addressed during this time. Data show that requests for information are twice as frequent as requests for
assistance (i.e. intervention or physical help) and that all together, requests are introduced more often by more advanced
apprentices than by those in the early stages of their training. These findings are linked with the facts that: a) bringing
apprentices to be autonomous early in their work is a deciding factor of the philosophy of work in many of the enterprises
training apprentices, b) more advanced apprentices are given more complex tasks to work on, c) more advanced apprentices work
more is often undertaken in collaboration with an expert car mechanics and d) questions and requests for help are more likely
to be addressed when working collaboratively than when working alone. These findings are interpreted as evidences of a natural
regulation which takes place at the workplace between the learner’s engagement and the workplace affordances. 相似文献
16.
AbstractThe aim of this study was to examine the effects of changes in maximal aerobic (MAS) and sprinting (MSS) speeds and the anaerobic reserve (ASR) on repeated-sprint performance. Two hundred and seventy highly-trained soccer players (14.5 ± 1.6 year) completed three times per season (over 5 years) a maximal incremental running test to approach MAS, a 40-m sprint with 10-m splits to assess MSS and a repeated-sprint test (10 × 30-m sprints), where best (RSb) and mean (RSm) sprint times, and percentage of speed decrement (%Dec) were calculated. ASR was calculated as MSS-MAS. While ?RSb were related to ?MSS and ?body mass (r2 = 0.42, 90%CL[0.34;0.49] for the overall multiple regression, n = 334), ?RSm was also correlated with ?MAS and ?sum of 7 skinfolds (r2 = 0.43 [0.35;0.50], n = 334). There was a small and positive association between ?%Dec and ?MAS (r2 = 0.02 [?0.07;0.11], n = 334). Substantial ?MSS and ?MAS had a predictive value of 70 and 55% for ?RSm, respectively. Finally, ?ASR per se was not predictive of ?RSm (Cohen’s = +0.8 to ?0.3 with increased ASR), but the greater magnitude of ?RSm improvement was observed when MSS, MAS and ASR increased together (0.8 vs. +0.4 with ASR increased vs. not, additionally to MSS and MAS). Low-cost field tests aimed at assessing maximal sprinting and aerobic speeds can be used to monitor ?RS performance. 相似文献
17.
Alberto Beuchot 《Distance Education》2005,26(1):67-87
This longitudinal study evaluated the amount and type of interaction and interpersonal content in messages posted by online graduate students in small group asynchronous forums. It also assessed the relationship between interpersonality and interactivity. To achieve this, a new coding scheme was developed to categorize the content of online forums. The results suggest that cultivating interpersonality online leads to increased participation and expands the depth of discussion, thus facilitating online collective knowledge building. Finally, regulating the complexity of interactions and fostering the development of a cohesive group of participants through increased interpersonal exchanges may render more controlled patterns of interactive online behavior and improve collective learning. 相似文献
18.
19.
The Italian academic profession is subject to complex bureaucratic structures and many strains as the result of rapid academic expansion but very limited resources. The ladder up the academic profession is both complicated and very difficult. Norms of professionalism are in conflict with the traditional patron system. This paper analyzes the current situation of the academic profession in Italian universities, and stresses a discussion of the career ladder and how it works in the academic system.Data for this paper have been collected as part of a research grant no. 73.00982.09 from the Consiglio Nazionale delle Ricerche. 相似文献
20.