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   167篇
  免费   5篇
教育   131篇
科学研究   7篇
各国文化   1篇
体育   5篇
信息传播   28篇
  2022年   1篇
  2021年   1篇
  2020年   3篇
  2019年   9篇
  2018年   15篇
  2017年   12篇
  2016年   8篇
  2015年   7篇
  2014年   6篇
  2013年   31篇
  2012年   11篇
  2011年   5篇
  2010年   7篇
  2009年   5篇
  2008年   5篇
  2007年   9篇
  2006年   1篇
  2005年   7篇
  2003年   2篇
  2002年   6篇
  2001年   2篇
  2000年   1篇
  1999年   2篇
  1998年   1篇
  1996年   3篇
  1994年   1篇
  1993年   1篇
  1992年   2篇
  1989年   1篇
  1987年   1篇
  1986年   1篇
  1984年   1篇
  1983年   1篇
  1982年   1篇
  1979年   1篇
  1977年   1篇
排序方式: 共有172条查询结果,搜索用时 15 毫秒
11.
12.
Institutional and student level data from the Florida Community Colleges were examined to explore the Retention Index of the Community College Survey of Student Engagement (CCSSE). A simple correlation and regression analysis was conducted to determine if the CCSSE Retention Index could be used to predict the institutional retention rate calculated for the state accountability measure. Student level data were used with a nested ANOVA to examine if there were mean differences in the CCSSE Retention Index scores of males and females of different racial groups when accounting for the potential influence of the institution attended. Mean differences were examined since differences in retention rates of these groups have been documented.  相似文献   
13.
To address the reduction of the 6-month exclusive breastfeeding (EBF) rate in Northeast Thailand, a 3-year 6-month EBF intervention model was developed using concept mapping. A training for health-care professionals and community leaders was prioritized as the initial intervention. The aim was to assess the feasibility of the training intervention and its potential to improve 6-month EBF knowledge. A pre- and posttest, and an open question were conducted. Data were analyzed using t tests and thematic analysis. For the 17 health-care professionals and community leaders who participated, the mean 6-month EBF knowledge scores improved significantly from 5.28 to 10.21 (p value < .01). It is recommended that this workshop could be duplicated and scaled up in other regions across Thailand to standardize care.  相似文献   
14.
Western economies have seen a shift away from a model of job security to a model of work precarity. Cycles of unemployment are a defining feature of the new precarious economy. Given these cycles of unemployment, it becomes imperative to explore the barriers to reemployment. The present study uses stigma communication to explore the intersection of two barriers to reemployment: the stigmatization of unemployment and social class position. Analysis of 40 interviews revealed that the meaning of unemployment changed depending on the perceived social class of an unemployed person. Participants described typical unemployed people as pathologically lazy and unmotivated. Upper class unemployed people were stigmatized as a product of privilege. Middle class unemployed people were relatively unstigmatized. The typical unemployed person merged with the typical unemployed lower class person, suggesting that the dominant meaning of unemployment assumes that unemployment is a lower class phenomenon that is preventable if the lower class person would work harder.  相似文献   
15.
Abstract

A key intervention of the South African Numeracy Chair Project (SANCP) since 2011 has been the introduction of mathematics (or maths) clubs, which occur in the out-of-school time space. In 2016 the maths club concept was developed into a 15-week Pushing for Progression (PfP) teacher development programme which supports primary school mathematics teachers to run clubs beyond the SANCP local area. Expanding intervention models beyond local schools is imperative in the second phase of the SANCP (2016–2020). Working from a mixed methods methodological approach, the researchers collected pre- and post-data for a 4-operations assessment of the entire PfP programme. In this article they share learner data from one of the nine teachers who participated in the PfP maths club programme in the Uitenhague District, Eastern Cape, South Africa, to illuminate how partnerships between academics, district officials and teachers can enable powerful student learning in the club space. They argue further that within the tightly focused development programme run by teachers in this one district, it is possible for learners to make substantive progress in mathematical proficiency (MP) (especially procedural fluency and conceptual understanding) when comparing scores and learner methods between a pre- and post- assessment.  相似文献   
16.
Communities with high levels of social capital are likely to have a higher quality of life than communities with low social capital. This is due to the greater ability of such communities to organize and mobilize effectively for collective action because they have high levels of social trust, dense social networks, and well-established norms of mutuality (the major features of social capital). Communities with “bridging” social capital (weak ties across groups) as well as “bonding” social capital (strong ties within groups) are the most effective in organizing for collective action. People who belong to multiple groups act as bridging ties. When people with bridging ties use communication media, such as the Internet, they enhance their capability to educate community members and to organize, as needed, for collective action. This article summarizes evidence from stratified household survey data in Blacksburg, VA, showing that people with weak (bridging) ties across groups have higher levels of community involvement, civic interest, and collective efficacy than people without bridging ties among groups. Moreover, heavy Internet users with bridging ties have higher social engagement, use the Internet for social purposes, and have been attending more local meetings and events since going online than heavy Internet users with no bridging ties. These findings may suggest that the Internet—in the hands of bridging individuals-is a tool for enhancing social relations and information exchange, and for increasing face-to-face interaction, all of which help to build both bonding and bridging social capital in communities.  相似文献   
17.
Given the paucity of studies conducted to know the effect of suddenness and earlier onset of endocrinological changes associated with hysterectomy, on the serum and urinary levels of calcium, magnesium and phosphate the present study was conducted to compare the levels of calcium, magnesium and phosphate in serum and urine of hysterectomised and natural menopausal south Indian women. This is a cross-sectional observational study. The study included three groups of 30 healthy premenopausal, 30 early surgical menopausal and 30 natural post menopausal women. Women suffering from any endocrine disease were excluded. Analysis was performed in serum and urine sample. The levels of calcium, magnesium and phosphate in serum and calcium/creatinine, magnesium/creatinine and phosphate/creatinine ratio were estimated in urine by spectrophotometric method. Hysterectomised women (serum calcium: 8.7 ± 0.09 mg/dl; urine calcium/creatinine: 0.16 ± 0.02) have significantly low serum calcium (p < 0.001) and high urinary calcium/creatinine (p = 0.002) ratio and post menopausal women (serum magnesium: 2.1 ± 0.03; serum phosphate: 4.4 ± 0.16; urinary calcium/creatinine: 0.17 ± 0.02; urinary magnesium/creatinine: 0.09 ± 0.01) have significantly high serum magnesium (p = 0.016), serum phosphate (p = 0.043) and high urinary calcium/creatinine (p = 0.002), magnesium/creatinine ratio (p = 0.025) compared to healthy pre menopausal women. Post menopausal women (serum calcium: 9.1 ± 0.08) have significantly high serum calcium and phosphate compared to hysterectomised women (serum phosphate: 3.93 ± 0.11). Hysterectomised women have significantly low serum calcium, oestrogen and high urinary calcium/creatinine ratio compared to healthy premenopausal women and low serum calcium and low serum phosphate compared to natural postmenopausal women. Natural postmenopausal women had low serum oestrogen and high serum magnesium, serum phosphate, urinary calcium creatinine ratio and urinary magnesium creatinine ratio compared to healthy premenopausal women.  相似文献   
18.
19.
Very little empirical large-scale research has been carried out on the use of IT in the management and administration of schools despite of the fact that schools all over the world have adopted such IT based systems. The move in many countries towards autonomous school management will further require the use of these systems. Sophisticated computerised school information systems (SISs) will have to provide school-based information relevant to the development of policies in areas where schools used merely to follow governmental guidelines. If such systems are to be designed and used to full effect, knowledge is urgently needed on the implementation, use and effects of established computerised SISs. The large-scale research project in England, reported here, goes some way towards filling this gap in our knowledge.  相似文献   
20.
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