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   2350篇
  免费   22篇
  国内免费   4篇
教育   1660篇
科学研究   209篇
各国文化   26篇
体育   249篇
综合类   13篇
文化理论   44篇
信息传播   175篇
  2023年   8篇
  2022年   37篇
  2021年   56篇
  2020年   68篇
  2019年   111篇
  2018年   148篇
  2017年   139篇
  2016年   114篇
  2015年   74篇
  2014年   94篇
  2013年   365篇
  2012年   83篇
  2011年   73篇
  2010年   74篇
  2009年   46篇
  2008年   53篇
  2007年   53篇
  2006年   47篇
  2005年   78篇
  2004年   79篇
  2003年   99篇
  2002年   74篇
  2001年   68篇
  2000年   38篇
  1999年   24篇
  1998年   13篇
  1997年   7篇
  1996年   9篇
  1995年   19篇
  1994年   11篇
  1993年   6篇
  1992年   8篇
  1991年   13篇
  1990年   8篇
  1989年   13篇
  1988年   6篇
  1986年   6篇
  1985年   8篇
  1984年   7篇
  1983年   6篇
  1982年   10篇
  1981年   6篇
  1980年   7篇
  1978年   7篇
  1977年   8篇
  1975年   5篇
  1974年   8篇
  1973年   7篇
  1966年   6篇
  1963年   6篇
排序方式: 共有2376条查询结果,搜索用时 0 毫秒
101.
High-fidelity anatomical models can be produced with three-dimensional (3D) scanning techniques and as such be digitally preserved, archived, and subsequently rendered through various media. Here, a novel methodology—digital body preservation—is presented for combining and matching scan geometry with radiographic imaging. The technique encompasses joining layers of 3D surface scans in an anatomical correct spatial relationship. To do so, a computed tomography (CT) volume is used as template to join and merge different surface scan geometries by means of nonrigid registration into a single environment. In addition, the use and applicability of the generated 3D models in digital learning modalities is presented. Finally, as computational expense is usually the main bottleneck in extended 3D applications, the influence of mesh simplification in combination with texture mapping on the quality of 3D models was investigated. The physical fidelity of the simplified meshes was evaluated in relation to their resolution and with respect to key anatomical features. Large- and medium-scale features were well preserved despite extensive 3D mesh simplification. Subtle fine-scale features, particular in curved areas demonstrated the major limitation to extensive mesh size reduction. Depending on the local topography, workable mesh sizes ranging from 10% to 3% of the original size could be obtained, making them usable in various learning applications and environments.  相似文献   
102.
A study of the relationships between students' questioning and learning styles is being conducted on data collected in two university semesters with a sample of 300 students. This report discusses the results of case studies looking in depth at four of the students. These were involved in further data collection through written and oral questions, interviews and classroom observation experiments. The main aim is to unravel the interrogative bases of the students' learning by looking at the quality and quantity of questions they ask. This means that among other characteristics, the nature and the deliberative or spontaneous use of questions by the four students were investigated. It was possible to distinguish question‐askers by tallying their questions. Their learning styles were characterised using Kolb's Learning Styles Inventory. The study also allowed for snapshots of how particular learners shape questions. Looking at the way in which these questioning styles fit with their orientations to learning, and how this drives learning, informs what teaching might best then ensue.  相似文献   
103.
通过对陈寅恪学术贡献与学术观点的评估、对陈寅恪人特征与化取向的剖析、对陈寅恪研究中几个问题的讨论、对全面评价陈寅恪的若干思考,可得出结论,陈寅恪存在理智与情感的尖锐矛盾,理智上能清醒地看到中国旧化必然歇绝的历史命运,情感上却无法摆脱对此化的深深眷恋。不仅陈寅恪的《诗集》,而且陈寅恪的全部作,都是对这一化的余音不绝的挽歌。陈寅恪的思想基础不是人本主义,而是民族主义、国家主义,他所追求和维护的不是“天下万世的真理”,而是囿于一时间(前现代)、一地域(封建中国)的终将归于不可救疗之局的纲常名教。陈寅恪不是一个真正的自由主义,而是一个坚定的保守主义。  相似文献   
104.
粤东高校篮球运动员赛前焦虑与场上表现的相关研究   总被引:2,自引:0,他引:2  
本通过对粤东高校男子篮球赛中8支球队运动员赛前焦虑情绪和比赛中表现的测试评价,结果表明:运动员赛前状态焦虑情绪与场上技术发挥、特一状焦虑与投篮命中关系密切,过高焦虑(或状态焦虑)对技术发挥和成绩不利,与整体实力、场上配合、紧张的关系不密切。建议平时要加强对运动员的心理训练才能取得好成绩。  相似文献   
105.
Induced by a literature review, this paper presents a framework of dimensions and indicators highlighting the underpinning aspects and values of social learning within teacher groups. Notions of social networks, communities of practice and learning teams were taken as the main perspectives to influence this social learning framework. The review exercise resulted in four dimensions: (1) practice, (2) domain and value creation, (3) collective identity and (4) organization. The indicators corresponding to these dimensions serve as the foundation for understanding social learning in practice. The framework of dimensions and indicators can be of assistance for researchers as well as teacher groups that aim to assess their views on social learning and analyse whether these views fit the learning goals of the group or that adjustments are required. In this way, learning processes within groups of teachers can be improved.  相似文献   
106.
The objective of this study was to describe the anthropometric profiles of elite older triathletes participating in the 2009 Ironman Brazil and to compare their somatotype, anthropometric and body composition characteristics with those of elite young triathletes and older non-athletes. The sample consisted of 64 males, divided into three groups: (1) older triathletes (n = 17), (2) young triathletes (n = 24), and (3) older non-athletes (n = 23). Somatotype was analysed according to the Carter and Heath ( 1990 ) method. Body mass index, sum of four skinfolds, percentage body fat, body fat mass, and fat-free mass were also estimated. Older non-athletes had higher endomorphy, sum of four skinfolds, fat percentage, and body fat mass than the athletes. Older athletes who participated in the Ironman and elite young triathletes had higher fat-free mass than older non-athletes. Older triathletes and older non-athletes were considered mainly endomorphic mesomorphs and young triathletes mainly ectomorphic mesomorphs. The findings that characterize the anthropometric profile of athletes in this sports modality could be used as a reference.  相似文献   
107.
Urinary excretion of 3 methoxy-4-hydroxy phenyl glycol (MHPG) and 3-methoxy-4-hydroxy mandelic acid (VMA) were estimated in 18 Post-Japanese Encephalitis depressive patients and 20 unipolar depressive patients to determine their biochemical differences. Both the metabolites were low in the former group in comparison to the later group, indicating that the metabolic events in respect to catecholamine turn over are different in two disorders.  相似文献   
108.
教师人格塑造的过程是一种有目的、有选择的社会教师人格要求的传递和个体教师人格内心体验与追求相统一的过程。其主要包括 :教师人格认识的教育 ;教师人格情感的熏陶 ;教师人格意志的培养 ;教师人格行为的锻炼。也就是一个不断由知经情和意到行的转化过程  相似文献   
109.
PURPOSE: Identify journal collection access and use factors. SETTING AND SUBJECTS: University of North Carolina at Chapel Hill's Health Sciences Library patrons. METHODOLOGY: Survey forms and user interactions were monitored once a week for twelve weeks during the fall 1997 semester. The project was based on a 1989 New Mexico State University study and used Kantor's Branching Analysis to measure responses. RESULT: 80% of reported sought journal articles were found successfully. Along with journal usage data, the library obtained demographic and behavioral information. DISCUSSION AND CONCLUSIONS: Journals are the library's most used resource and, even as more electronic journals are offered, print journals continue to make up the majority of the collection. Several factors highlighted the need to study journal availability. User groups indicated that finding journals was problematic, and internal statistics showed people requesting interlibrary loans for owned items. The study looked at success rates, time, and ease of finding journals. A variety of reasons contributed to not finding journals. While overall user reports indicated relatively high success rate and satisfaction, there were problems to be addressed. As the library proceeds in redesigning both the physical space and electronic presence, the collected data have provided valuable direction.  相似文献   
110.
Given the importance of survey measures of online media use for communication research, it is crucial to assess and improve their quality, in particular because the increasingly fragmented and ubiquitous usage of internet complicates the accuracy of self-reported measures. This study contributes to the discussion regarding the accuracy of self-reported internet use by presenting relevant factors potentially affecting biases of self-reports and testing survey design strategies to improve accuracy. Combining automatic tracking data and survey data from the same participants (N = 690) confirmed low levels of accuracy and tendencies of over-reporting. The analysis revealed biases due to a range of factors associated with the intensity of (actual) internet usage, propensity to multitask, day of reference, and the usage of mobile devices. An anchoring technique could not be proved to reduce inaccuracies of reporting behavior. Several recommendations for research practice follow from these findings.  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