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   742篇
  免费   16篇
教育   641篇
科学研究   13篇
各国文化   9篇
体育   17篇
信息传播   78篇
  2023年   4篇
  2022年   4篇
  2021年   10篇
  2020年   17篇
  2019年   17篇
  2018年   39篇
  2017年   35篇
  2016年   32篇
  2015年   31篇
  2014年   29篇
  2013年   179篇
  2012年   23篇
  2011年   24篇
  2010年   19篇
  2009年   17篇
  2008年   11篇
  2007年   18篇
  2006年   17篇
  2005年   13篇
  2004年   12篇
  2003年   14篇
  2002年   14篇
  2001年   23篇
  2000年   7篇
  1999年   11篇
  1998年   8篇
  1997年   10篇
  1996年   12篇
  1995年   9篇
  1994年   8篇
  1993年   10篇
  1992年   9篇
  1991年   7篇
  1990年   4篇
  1989年   2篇
  1988年   7篇
  1987年   5篇
  1986年   5篇
  1985年   6篇
  1984年   4篇
  1983年   6篇
  1980年   5篇
  1979年   2篇
  1978年   5篇
  1977年   2篇
  1976年   2篇
  1974年   1篇
  1973年   2篇
  1969年   3篇
  1964年   1篇
排序方式: 共有758条查询结果,搜索用时 13 毫秒
61.
Oral Cancer is one of the five leading sites of cancer in Indian population. The circulating immune complexes were investigated in 100 serum samples of 60 oral cancer patients having different grades of the disease and 40 patients with precancerous lesions obtained from Nair Hospital Dental collage, Mumbai. The results obtained were compared with those of group of 40 healthy blood donors. Elevated levels of Circulating Immune Complexes were observed in oral cancer patients and patients with oral precancerous lesions. 92% positive samples were observed in well differentiated squamous cell carcinoma whereas 100% positive samples were observed in both moderately and poorly differentiated squamous cell carcinoma. Oral leukoplakia and oral submucous fibrosis showed 15% and 90% positivity respectively. Increased level of Circulating Immune complexes in high grade tumor suggest that Circulating Immune complexes is likely to contribute in evaluating the degree of malignancy, but follow up study is needed to draw any conclusion regarding it's prognostic role  相似文献   
62.
63.
This study assessed the progress of students involved in a collaborative early warning intervention conducted by counseling services and a teacher preparation program. Results indicated that counseling services increased both students' academic and social integration and their confidence in their ability to teach and perform the duties of a teacher. Findings and implications are discussed.  相似文献   
64.
65.
66.
The use of IQ scores and discrepancy formulas for identifying specific learning disabilities (SLD) has been widely discredited by prominent researchers for more than a decade. Nevertheless, the overwhelming majority of state policies still specify the use of discrepancy formulas, including the simple difference method, which is psychometrically inferior to regression-based methods. This study compares the use of a minimum IQ cutoff score and a simple difference method versus a regression-based method for identifying SLD in a sample of African American and European American full-time college students (N = 117). Replicating the findings from previous studies using typically achieving children, typically achieving adults, and school-age children with SLD, this study adds to the chorus of voices criticizing the use of outdated assessment practices that can have deleterious effects for individuals with SLD. The implications for legislative policy are discussed in the context of the historical overrepresentation of African Americans in all special education categories except SLD and the increased access to higher education that students with SLD have gained during the past decade.  相似文献   
67.
68.
Kindergarten, third-grade, and sixth-grade children were told 2 stories about a group of children who made artwork that was subsequently sold at a craft fair. The characters in one story were described as friends, while the characters in the other story were described as strangers (relationship condition). 1 character in each story was presented as the oldest in the group, 1 as the most productive, and 1 as the poorest. Children were asked to allocate 9 dollars to the 3 characters under each relationship condition, provide rationales for those allocations, and rate the fairness of 4 different patterns of allocation. Older children allocated more money to needy friends than to needy strangers and more to productive strangers than to productive friends. Kindergartners' allocations and fairness ratings did not vary with relationship. Rationales for allocation judgements suggested that equality was the most salient principle for decisions at all ages, but the older children provided rationales based on benevolence more often than younger children when characters were presented as friends.  相似文献   
69.
70.
Fifth-grade students with learning disabilities (LD) and their typically achieving (TA) peers participated in an 8-week investigation about 19th-century U.S. westward migration. During their investigations, the students analyzed primary and secondary sources to understand the experiences of these emigrants and Native peoples. The analysis of source material was preceded by teacher-led discussions about the possibility of bias in evidence that affects the trustworthiness of historical documentation. Quantitative analyses showed that these investigations were associated with gains in students' knowledge about the period of westward expansion and a better understanding of historical content and historical inquiry; however, these gains were not always comparable for students with LD and their TA peers. Furthermore, misconceptions about this historical period and the processes of historical investigation were evident in students' responses before and after instruction. We discuss how design features of the instruction and its implementation may have contributed to the development and persistence of these misconceptions.  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