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   4033篇
  免费   81篇
  国内免费   3篇
教育   3238篇
科学研究   151篇
各国文化   55篇
体育   196篇
综合类   1篇
文化理论   26篇
信息传播   450篇
  2022年   26篇
  2021年   45篇
  2020年   76篇
  2019年   100篇
  2018年   132篇
  2017年   166篇
  2016年   143篇
  2015年   100篇
  2014年   102篇
  2013年   971篇
  2012年   108篇
  2011年   122篇
  2010年   109篇
  2009年   99篇
  2008年   117篇
  2007年   115篇
  2006年   100篇
  2005年   97篇
  2004年   99篇
  2003年   80篇
  2002年   89篇
  2001年   67篇
  2000年   66篇
  1999年   52篇
  1998年   45篇
  1997年   58篇
  1996年   41篇
  1995年   44篇
  1994年   48篇
  1993年   47篇
  1992年   39篇
  1991年   37篇
  1990年   35篇
  1989年   36篇
  1988年   28篇
  1987年   27篇
  1986年   30篇
  1985年   40篇
  1984年   29篇
  1983年   28篇
  1982年   25篇
  1981年   17篇
  1980年   26篇
  1979年   26篇
  1978年   25篇
  1977年   25篇
  1976年   26篇
  1974年   12篇
  1971年   12篇
  1969年   12篇
排序方式: 共有4117条查询结果,搜索用时 15 毫秒
961.
Despite the expansion of Deaf people's use of communication technology little is published about how they use electronic communication in their social and working lives and the implications for their concepts of identity and community. Australia is an ideal research base because the use of a range of technologies is widespread there. To gain access to a wide age range of people who identify as Deaf, members of the national organization, the Australian Association of the Deaf, were surveyed by mail. Results showed that Short Message Service (SMS), telephone typewriters (TTY), voice/TTY relay services, fax, and e-mail were used regularly. Deaf users are discerning of the purposes for which they use each method: SMS for social and personal interactions, TTY for longer communications and (via the relay service) with people and services without TTYs, fax for business and social contact, and computers for personal and business e-mails as well as Web browsing, accessing chat rooms, word processing, games, and study.  相似文献   
962.
In this column, three proud grandmothers share their unique stories and eloquently describe the transforming experience of becoming a grandmother and the joy associated with witnessing their daughters giving birth.  相似文献   
963.
Predictors of depressive symptoms among foster caregivers   总被引:1,自引:0,他引:1  
OBJECTIVES: The main purposes of this study were to determine (1) the prevalence of depressive symptoms among foster caregivers, (2) the social-demographics, risk factors, and social support predicting depressive symptoms, and (3) whether social support buffered the effects of the risk factors in the Illinois Foster Caregivers Study. METHOD: Telephone interviews were used to collect data from a sample of 189 foster caregivers in the State of Illinois. Interviewers pretested the survey instrument, which included valid and reliable instruments on depressive symptoms and adult report of childhood maltreatment, an important risk factor for depression. Multivariate ordered logistic regression models were estimated. RESULTS: The foster caregivers exhibited few depressive symptoms, with only one respondent scoring in the clinical range. Contrary to past research on the general population, caregivers reporting higher income were at an increased risk of exhibiting depressive symptoms. The three risk factors-experiencing less than excellent or very good health, childhood maltreatment, and insufficient time to carry out responsibilities-were related to higher levels of depressive symptoms. Foster caregivers who perceived their support group as helpful had a decreased risk of reporting depressive symptoms. We found no evidence that social support buffered the effects of the risk factors. CONCLUSIONS: The results indicate that foster caregivers were adequately screened for depression, but suggest that assessing and providing assistance for health problems, trauma from childhood maltreatment, and insufficient time to meet responsibilities might decrease depressive symptoms. Facilitating and enhancing the helpfulness of foster caregiver support groups also might decrease development of depressive symptoms.  相似文献   
964.
965.
Genome Consortium for Active Teaching: meeting the goals of BIO2010   总被引:2,自引:2,他引:0  
The Genome Consortium for Active Teaching (GCAT) facilitates the use of modern genomics methods in undergraduate education. Initially focused on microarray technology, but with an eye toward diversification, GCAT is a community working to improve the education of tomorrow's life science professionals. GCAT participants have access to affordable microarrays, microarray scanners, free software for data analysis, and faculty workshops. Microarrays provided by GCAT have been used by 141 faculty on 134 campuses, including 21 faculty that serve large numbers of underrepresented minority students. An estimated 9480 undergraduates a year will have access to microarrays by 2009 as a direct result of GCAT faculty workshops. Gains for students include significantly improved comprehension of topics in functional genomics and increased interest in research. Faculty reported improved access to new technology and gains in understanding thanks to their involvement with GCAT. GCAT's network of supportive colleagues encourages faculty to explore genomics through student research and to learn a new and complex method with their undergraduates. GCAT is meeting important goals of BIO2010 by making research methods accessible to undergraduates, training faculty in genomics and bioinformatics, integrating mathematics into the biology curriculum, and increasing participation by underrepresented minority students.  相似文献   
966.
Structural equation modeling is applied to investigate how parents’ communication with their child about his or her Internet use is linked to the child’s acceptance of parental authority in the context of Internet use, and how this in turn is linked to the child’s social media behavior. This study surveyed children aged 13 to 18 and their mothers and fathers (N = 357 families) and found that acceptance of parental authority is a key factor in the effectiveness of parental mediation. It is recommended that parental mediation is studied as a dynamic process shaped by both parents and children.  相似文献   
967.
968.
969.
In this study we described an action research project enacted by a veteran Kindergarten teacher (Sarah) in the context of a professional development program. Over the course of a year, Sarah collaborated with other teachers in a small group to investigate how to use “Science Talks” to promote student learning in Kindergarten classrooms. A Problem-Based Learning approach was adopted to guide the collaborative action research. Based on a rich set of data sources, we concluded that Sarah’s action research improved student learning and led to her own professional growth. We also identified important conditions in support of action research.  相似文献   
970.
The purpose of this study was to examine the effects of a shared reading experience between parent and child in the child’s home language on the emergent literacy and language acquisition in English of preschool-age English Language Learners. Parents of Spanish-speaking four-year-old Head Start students read storybooks in Spanish with their children concurrently with the use of the English language version of the books in the classroom. A single subject design with multiple baselines across subjects and settings was applied. Observed variables included changes in the frequency of utterances, the Mean Length of Utterance-word, and the frequency of spontaneous or child-initiated utterances in various settings within the Head Start classroom. The results indicated that there might be a relation between the shared reading experience in the home language and the child’s second language acquisition. Additionally, there appeared to be a relation between the behaviors and the settings. Finally, implications of this study were discussed.  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