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   876篇
  免费   16篇
教育   686篇
科学研究   27篇
各国文化   11篇
体育   49篇
文化理论   6篇
信息传播   113篇
  2023年   6篇
  2022年   5篇
  2021年   6篇
  2020年   19篇
  2019年   25篇
  2018年   27篇
  2017年   40篇
  2016年   23篇
  2015年   17篇
  2014年   25篇
  2013年   226篇
  2012年   18篇
  2011年   23篇
  2010年   22篇
  2009年   14篇
  2008年   26篇
  2007年   22篇
  2006年   14篇
  2005年   10篇
  2004年   20篇
  2003年   23篇
  2002年   21篇
  2001年   10篇
  2000年   13篇
  1999年   14篇
  1998年   7篇
  1997年   9篇
  1996年   8篇
  1995年   9篇
  1994年   6篇
  1993年   7篇
  1992年   6篇
  1991年   14篇
  1990年   7篇
  1989年   13篇
  1988年   13篇
  1987年   8篇
  1986年   6篇
  1985年   13篇
  1984年   11篇
  1983年   7篇
  1981年   8篇
  1980年   6篇
  1979年   6篇
  1978年   5篇
  1977年   4篇
  1976年   7篇
  1973年   5篇
  1970年   8篇
  1969年   4篇
排序方式: 共有892条查询结果,搜索用时 15 毫秒
861.
Five experiments involving 245 participants examined children's understanding of logical consistency. For instance, a character said that a man was both tall and very short. Only by 6 years of age did children show any understanding of logical inconsistency. This occurred despite: (1) good memory for the characters' claims; (2) the use of three different question forms including whether a person had made sense, said something silly, or whether both things a person said could be right; (3) the ability to identify other types of statements (e.g., factual inconsistencies) as not making sense; (4) the ability to compare and contrast the characters' claims in other ways; and (5) attempts to deepen children's processing of the claims by asking them to draw what each character said. Similar to false belief understanding, there was a monotonic relation between the number of older siblings a child had and logical consistency understanding on one of the tasks. It is argued that children may fail the different consistency tasks because of both logical factors (e.g., insufficient insight into logical necessity) and nonlogical factors tied to their social knowledge or insight into representation.  相似文献   
862.
863.
864.
865.
866.
The University of Oklahoma Health Sciences Center (OUHSC) Library conducted a two-year program, funded by the National Library of Medicine (NLM), to teach Oklahoma's nonurban health professionals to perform searches of NLM's MEDLINE files using microcomputers. The training program included lectures, online demonstrations, and hands-on practice time. The initial target audience of non-urban physicians was later broadended to include other health professionals. Data collected on the 334 seminar participants included professions and specialties, previous microcomputer usage, and the size of their hospitals. On-site evaluation indicated a high degree of satisfaction with the trainers' communication skills, preparation, information imparted, and the visual aids used. The results of a follow-up survey to determine how many trainees subsequently obtained NLM codes, the amount of searching done, and the problems experienced await analysis.  相似文献   
867.
868.
In order to investigate further the use of standardization procedures to determine training effects on cardiac dimension and function, two groups of subjects were analysed noninvasively. A control group of sedentary men (n = 7) and an experimental group of weight lifters (n = 12) volunteered for a standard M-mode echocardiographic assessment. Indices of cardiac function as well as absolute left ventricular dimensions and left ventricular mass were similar between the groups. Standardizing for body surface area and body weight separated the groups. The weight lifters were shown to have a more muscular left ventricular posterior wall. The weight lifters also demonstrated a dilated left ventricle when indexing for body surface area. All other dimensional and volumetric indices were non-significant. The present investigation underlines the need for matching control and experimental groups to biometric variables in order to avoid misinterpreting cardiac enlargement. There is evidence for a true relative hypertrophy in weight lifters as indicated by similar absolute cardiac dimensions and similar biometric variables. Therefore, when evaluating athletes engaged in a chronic pressure overload, cardiac hypertrophy indices should consider body surface area (BSA), body weight and lean body weight (LBW). Future work in this field should incorporate rigorous controls on all biometric variables for better interpretation of hypertrophy in relative or absolute terms.  相似文献   
869.
870.
A scheme of professional development for teachers, leading to the award of Advanced Certificate, Advanced Diploma or degree of Master of Education, has been in operation at the University of Bath School of Education for some years. Recently this modular scheme has been extended to become more accessible to teachers in international and overseas schools around the world, with modules taught in a range of locations internationally including a Summer School held annually in July at the University of Bath. The Methods of Educational Enquiry (MEE) module provides an introduction to aspects of educational research and is recommended to participants as an early module for study: between 1992 and 1993 this module has thus been taught on more occasions than any other, in a number of different locations and by a number of different tutors. This paper considers issues arising from the implementation of an instrument for the evaluation of some aspects of the taught component of the MEE module in a wide range of contexts, and describes the development of two related measures of participants' satisfaction with respect to this component. A further paper will consider a wider range of issues across a number of different modules in a range of locations.  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