首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   217篇
  免费   7篇
  国内免费   1篇
教育   129篇
科学研究   18篇
各国文化   1篇
体育   62篇
文化理论   4篇
信息传播   11篇
  2023年   1篇
  2022年   4篇
  2021年   11篇
  2020年   14篇
  2019年   19篇
  2018年   25篇
  2017年   21篇
  2016年   14篇
  2015年   7篇
  2014年   12篇
  2013年   41篇
  2012年   4篇
  2011年   7篇
  2010年   4篇
  2009年   5篇
  2008年   6篇
  2007年   2篇
  2006年   2篇
  2005年   4篇
  2004年   3篇
  2003年   3篇
  2002年   2篇
  2001年   2篇
  2000年   2篇
  1999年   1篇
  1998年   1篇
  1996年   2篇
  1994年   1篇
  1993年   2篇
  1992年   1篇
  1991年   1篇
  1973年   1篇
排序方式: 共有225条查询结果,搜索用时 718 毫秒
141.
This study examined the associations among maternal depression, mothers’ emotional and material investment in their child, and children's cognitive functioning. Middle-class Chilean mothers and children (N = 875; 52% males) were studied when children were 1, 5, 10, and 16 years (1991–2007). Results indicated that highly depressed mothers provided less emotional and material support to their child across all ages, which related to children's lower IQ. Children with lower mental abilities at age 1 received less learning-material support at age 5, which led to mothers’ higher depression at child age 10. Mothers’ low support was more strongly linked to maternal depression as children got older. Findings elucidate the dynamic and enduring effects of depression on mothers’ parenting and children's development.  相似文献   
142.
Undergraduate student attrition is a major concern in higher education. It is usually explained by the impact of student attributes; however, recent developments in student success literature point to the need of exploring institutional practices that may impact a student's decision to abandon their studies. The current weight of academic quality assurance for Colombian higher education institutions (HEI) and what such measures may mean for how HEI fulfill their missions indicates the need to consider a possible relation between such quality measures and undergraduate student attrition. Using official databases from the Colombian Ministry of Education for the year 2009, this study explores through analysis of variance the relationship between attrition and three measures of academic quality: accreditation status, professional test scores required to graduate (Saber Pro Exam) and the number of research groups at HEI. The scope of the study is the Colombian Caribbean region and the sample includes 19 HEI. Study results demonstrate that the percentage of accredited undergraduate programs at HEI was the only measure of quality assurance, out of the three explored, that showed a statistically significant relationship with undergraduate student attrition rates.  相似文献   
143.
Sustainability issues in higher educational institutions have attracted increasing levels of attention from both the public and policy-makers in recent decades. Many studies have called for a more integration of sustainability into mainstream university operations and curricula. Nevertheless, the interest in sustainability issues has been more recent in the specific case of Spain. On this basis, the aim of this paper is to examine the main factors (size of universities, chairs related to sustainability, political orientation and sustainability disclosure) that might explain the presence of sustainability initiatives in Spanish universities. To accomplish this task, data were collected using a systematic content analysis of the published strategic plans of Spanish universities during the last decade. Two main findings were identified: first, the four variables chosen were not related to the presence or absence of sustainability initiatives in the strategic plans of Spanish universities, excepting the partial influence exerted by the size and political orientation. Second, there was a scarce presence of sustainability initiatives in the strategic plans of Spanish universities analysed.  相似文献   
144.
This report aims to analyse the independent association of lean mass and muscle fitness with bone mineral content (BMC) and bone mineral density (BMD), and to examine whether the relationship between muscle fitness and bone health is mediated by lean mass. Body composition (by dual energy X-ray absorptiometry (DXA)), muscle fitness, physical activity, age and height were measured in 132 schoolchildren (62 boys, aged 8–11 years). Analysis of covariance tested differences in bone-related variables by lean mass and muscle fitness, controlling for different sets of confounders. Linear regression models fitted for mediation analyses examined whether the association between muscle fitness and bone mass was mediated by lean mass. Children with good performance in handgrip and standing long jump had better and worse bone health, respectively. These differences disappeared after controlling for lean mass. Children with high lean mass had higher values in all bone-related variables. In addition, the relationship between muscle fitness and bone mass was fully mediated by lean mass. In conclusion, the relationship between upper-limbs muscle fitness and bone health seems to be dependent on lean mass but not on muscle fitness. Schoolchildren with high lean mass have more BMC and BMD in all regions. Lean mass mediates the association between muscle fitness and bone mass.  相似文献   
145.
Jorge Durán 《Open Learning》2013,28(2):169-177
The Telescundaria of Mexico has arguably been, since the late 1960s and 1970s, among the most successful providers of educational television-based middle school programs. It now has over 1,050,000 students following the formal middle school academic curriculum in Mexico, together with some 30,000 students in other Central American countries whose governments have adopted the system as a way of meeting middle school educational needs. It is also being adopted in countries of the Andean region. The Telesecundaria generally serves communities of under 2500 inhabitants that cannot support a conventional school. The instructional system, based on educational broadcasting by satellite, print, and tuition, is outlined, along with the changes that might arise from the development of online educational services. Evaluation shows that the results obtained by students are on a par with or better than the conventional schooling system in Mexico, and that these results are obtained at very little additional cost per student, compared with the conventional system. The Telesecundaria also plays an important role in non-formal education within the community.  相似文献   
146.
147.
Research Findings: The goal of the present study was to provide empirical evidence for the importance of mastering reading fluency in early schooling. Study participants were 1,322 students in 3rd grade in 42 schools in a northwestern state. These students were assessed using a battery of reading skill tests as well as comprehensive tests of more general reading outcomes from kindergarten through 3rd grade. Practice or Policy: The results of the study show that mastery of reading fluency prior to currently established benchmarks is a significant positive predictor of later reading skills in primary grades even after student demographic information and initial reading levels are controlled. The results provide additional evidence for the importance of early reading development, early intervention, and preventing reading difficulties as early as possible in schooling.  相似文献   
148.
Radiological imaging is gaining relevance in the acquisition of competencies in clinical anatomy. The aim of this study was to evaluate the perceptions of medical students on teaching/learning of imaging anatomy as an integrated part of anatomical education. A questionnaire was designed to evaluate the perceptions of second‐year students participating in a clinical anatomy course over three consecutive academic years. A principal component analysis was used to evaluate the dimensionality of the questionnaire. The variables were summarized using frequencies, mean, median, 25th percentile, 75th percentile, minimum, and maximum. The results demonstrated that students felt the teaching of imaging anatomy influenced learning in the clinical anatomy course (mean = 4.5, median = 5.0) and subsequent clinical courses (mean = 4.4, median = 4.0). Regarding the imaging techniques used in the demonstration of anatomical structures, computed tomography (median = 5.0) and magnetic resonance imaging (median = 5.0) were highly rated. Students suggested the use of additional support material (37.6%) and favored a more practical approach. In conclusion, the results of this work highlight the value of imaging anatomy in learning human anatomy. Students' comments pointed out a need to focus teaching/learning programs toward a more practical rather than theoretical approach as well as a need to provide a better fit between sectional anatomy and clinical cases using imaging anatomy. In order to provide an optimal learning environment to students, it also seems important to create improved media material as an additional resource tool. Anat Sci Educ. © 2013 American Association of Anatomists.  相似文献   
149.
Abstract

We assessed the agreement between maximal oxygen consumption ([Vdot]O2max) measured directly when performing the 20-m shuttle run test and estimated [Vdot]O2max from five different equations (i.e. Barnett, equations a and b; Léger; Matsuzaka; and Ruiz) in youths. The 20-m shuttle run test was performed by 26 girls (mean age 14.6 years, s = 1.5; body mass 57.2 kg, s = 8.9; height 1.60 m, s = 0.06) and 22 boys (age 15.0 years, s = 1.6; body mass 63.5 kg, s = 11.5; height 1.70 m, s = 0.01). The participants wore a portable gas analyser (K4b2, Cosmed) to measure [Vdot]O2 during the test. All the equations significantly underestimated directly measured [Vdot]O2max, except Barnett's (b) equation. The mean difference ranged from 1.3 ml · kg?1 · min?1 (Barnett (b)) to 5.5 ml · kg?1 · min?1 (Léger). The standard error of the estimate ranged from 5.3 ml · kg?1 · min?1 (Ruiz) to 6.5 ml · kg?1 · min?1 (Léger), and the percentage error ranged from 21.2% (Ruiz) to 38.3% (Léger). The accuracy of the equations available to estimate [Vdot]O2max from the 20-m shuttle run test is questionable at the individual level. Furthermore, special attention should be paid when comparisons are made between studies (e.g. population-based studies) using different equations. The results of the present study suggest that Barnett's (b) equation provides the closest agreement with directly measured [Vdot]O2max (cardiorespiratory fitness) in youth.  相似文献   
150.
Childhood obesity prevention has fallen short of anticipated impact. Therefore, intervention programs need to be redirected to other potential settings to increase youth physical activity. This qualitative study, using autodriven interview techniques, was conducted to identify out-of-school settings that youth perceive as important for physical activity. Sixty-six children took photographs involving their physical activity involvement. A subsample completed follow-up focus groups. Salient themes included types of physical activities related to free play, fitness, organized sports, and chores. Most photographs included multiple children of similar age and were taken outdoors. Data suggest children associate chores with physical activity and engage in fitness-related activities. In addition, friends and family, the outdoors, and importantly, the home emerged as natural intervention components that may prove useful towards decreasing the physical inactivity and obesity of youth.  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号