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   714篇
  免费   6篇
教育   549篇
科学研究   38篇
各国文化   14篇
体育   59篇
综合类   1篇
文化理论   7篇
信息传播   52篇
  2023年   4篇
  2022年   4篇
  2020年   11篇
  2019年   9篇
  2018年   16篇
  2017年   21篇
  2016年   15篇
  2015年   12篇
  2014年   10篇
  2013年   168篇
  2012年   12篇
  2011年   24篇
  2010年   21篇
  2009年   15篇
  2008年   18篇
  2007年   19篇
  2006年   13篇
  2005年   15篇
  2004年   12篇
  2003年   8篇
  2002年   16篇
  2001年   8篇
  2000年   21篇
  1999年   9篇
  1998年   8篇
  1997年   8篇
  1996年   8篇
  1995年   8篇
  1994年   20篇
  1993年   4篇
  1992年   10篇
  1991年   6篇
  1990年   11篇
  1989年   6篇
  1986年   5篇
  1985年   11篇
  1984年   12篇
  1983年   6篇
  1982年   10篇
  1981年   12篇
  1980年   9篇
  1979年   11篇
  1978年   4篇
  1977年   8篇
  1976年   4篇
  1975年   4篇
  1973年   7篇
  1971年   7篇
  1970年   3篇
  1968年   5篇
排序方式: 共有720条查询结果,搜索用时 8 毫秒
31.
This study compared principal and self ratings of performance of guidance functions for practicing counselors who did not have teaching experience. The sample consisted of 43 counselors and their principals from throughout the United States. The ratings indicate better-than-average initial counselor acceptance by administrators, teachers, students, and parents with the degree of acceptance being greater after they had counseled for a while. Principal and self ratings differed significantly on initial acceptance by students and present acceptance by other counselors. Ratings of acceptance by both school psychologists and social workers were below average. There was no significant difference in counselor and principal ratings of counselor understanding of various school procedures and policies or of their ability to perform basic guidance activities. A majority of the principals who had worked with the counselors with non-teaching backgrounds indicated they would recommend the hiring of such a person to their school board.  相似文献   
32.
33.
Within the field of intellectual disability, progressive policy thinking in Wales has led to an emphasis on the tailoring of services to individual needs and wants of service users, especially through individual planning processes and the creation of service packages. Using an adapted structure‐process‐outcome evaluation model, research is reported about how informal supporters appraise service quality. Based on a survey of 752 families, the first phase of the research reported here has been concerned with charting relationships between personal characteristics of users, service process factors and appraisals by informal supporters of service quality. The findings suggest the importance of key service process factors to an understanding of dimensions of service quality.  相似文献   
34.
Using the National Science Foundation's 2006 Science Indicators Survey, this study explores three distinct explanations of public attitudes. First, the knowledge-attitudes model refers to a well tested relationship between public knowledge of science and more favorable attitudes toward science. Second, the alienation model hypothesizes that public disassociation with science is a symptom of a general disenchantment with late modernity, mainly, the limitations associated with codified expertise, rational bureaucracy, and institutional authority. A third approach emphasizes the cultural meaning of science: how various public beliefs about "what science is" relate to acceptance or reservations about science. The Science Indicators Survey shows that US adults view science (what it is or should be) in three distinct ways: (1) in terms of having a systematic method, (2) in terms of social location (i.e., takes place in a university or a laboratory), and (3) in terms of knowledge that should accord with commonsense and tradition. The findings in this study indicate that the knowledge-attitudes, alienation, and cultural meanings models are all valuable for understanding the cultural authority of science. However, the strength of these explanations depends on the type of attitude analyzed.  相似文献   
35.
36.
Time-of-flight secondary ion mass spectrometry (ToF-SIMS) is quickly becoming a critical tool in the field of art conservation. This technique provides high-resolution spatial maps of both inorganic and organic components located within cross-sectional samples collected from works of art. With recent advances in surface analysis, ToF-SIMS can now be used to identify specific amino acids present in protein-containing materials as well as fatty acids in drying oils. For example, the detection of the ion fragment associated with the amino acid hydroxyproline can be used to confirm the use of animal glue in a paint sample. As an analytical technique, ToF-SIMS avoids the need for derivatization/silylation reagents, with no interference by the presence of pigments. Furthermore, the layered systems that are often encountered in historical paint samples remain intact throughout the analytical procedure. This allows for the co-localization of organic and inorganic species in specific layers (e.g. egg yolk paint atop a glue ground). Because of this ability to localize the analytical signal to approximately 6?µm or less, the mass spectral information can be used to produce mass-resolved and spatially-resolve images which can be correlated to previous studies of the same samples. In this study, ToF-SIMS was used to analyze a paint cross section obtained from a painting attributed to Raphael, and another from a painting by the Sienese artist Matteo di Giovanni.  相似文献   
37.
38.
Spatial ability (SA) is the cognitive capacity to understand and mentally manipulate concepts of objects, remembering relationships among their parts and those of their surroundings. Spatial ability provides a learning advantage in science and may be useful in anatomy and technical skills in health care. This study aimed to assess the relationship between SA and anatomy scores in first- and second-year medical students. The training sessions focused on the analysis of the spatial component of objects' structure and their interaction as applied to medicine; SA was tested using the Visualization of Rotation (ROT) test. The intervention group (n = 29) received training and their pre- and post-training scores for the SA tests were compared to a control group (n = 75). Both groups improved their mean scores in the follow-up SA test (P < 0.010). There was no significant difference in SA scores between the groups for either SA test (P = 0.31, P = 0.90). The SA scores for female students were significantly lower than for male students, both at baseline and follow-up (P < 0.010). Anatomy training and assessment were administered by the anatomy department of the medical school, and examination scores were not significantly different between the two groups post-intervention (P = 0.33). However, participants with scores in the bottom quartile for SA performed worse in the anatomy questions (P < 0.001). Spatial awareness training did not improve SA or anatomy scores; however, SA may identify students who may benefit from additional academic support.  相似文献   
39.
40.
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