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   2335篇
  免费   56篇
教育   1891篇
科学研究   44篇
各国文化   40篇
体育   114篇
综合类   2篇
文化理论   10篇
信息传播   290篇
  2023年   12篇
  2022年   10篇
  2021年   30篇
  2020年   36篇
  2019年   74篇
  2018年   93篇
  2017年   109篇
  2016年   79篇
  2015年   52篇
  2014年   72篇
  2013年   597篇
  2012年   65篇
  2011年   65篇
  2010年   67篇
  2009年   65篇
  2008年   66篇
  2007年   54篇
  2006年   52篇
  2005年   70篇
  2004年   60篇
  2003年   42篇
  2002年   43篇
  2001年   38篇
  2000年   35篇
  1999年   27篇
  1998年   26篇
  1997年   38篇
  1996年   32篇
  1995年   32篇
  1994年   27篇
  1993年   27篇
  1992年   18篇
  1991年   29篇
  1990年   23篇
  1989年   13篇
  1988年   15篇
  1987年   7篇
  1986年   14篇
  1985年   9篇
  1984年   20篇
  1983年   13篇
  1982年   21篇
  1981年   12篇
  1980年   16篇
  1979年   15篇
  1978年   7篇
  1977年   11篇
  1976年   10篇
  1975年   7篇
  1974年   14篇
排序方式: 共有2391条查询结果,搜索用时 125 毫秒
91.
Single-case research designs are useful for learning disability researchers interested in refining novel interventions (e.g., new mathematics intervention) before scaling, small n populations (e.g., students with comorbid learning and emotional and behavioral disabilities), and testing unique conditions (e.g., remote locales). Much attention has been devoted to developing research quality standards, which is essential for replication and implementation fidelity; however, little is known about the reporting quality of single-case design studies. To gain insight into the quality of learning disability single-case research design study reporting, we analyzed 72 articles published between 2010 and 2021 in six learning disability-focused journals using the Single-Case Reporting Guideline In BEhavioral interventions (SCRIBE) standards. Findings suggest that reporting quality has remained stagnant, and none of the studies reviewed met all of the reporting standards. Alignment with standards ranged from 33% to 77%. Implications for researchers and practitioners are discussed.  相似文献   
92.
93.
This special issue spotlights the growing diversity of critical making practices in a range of disciplinary contexts both inside and outside of the academy, and begins to develop perspectives that will foster the emergence of critical making as a coherent field. On one hand, we see great value in incorporating material practices into existing information systems (IS) and science and technology studies (STS) research programs. In particular, forms of material engagement can help overcome the ineffectual linguistic bias of traditional critiques of technoscience. On the other hand, we believe that current material practices can benefit from the conceptualization of knowledge and social organization that are foundational to IS and STS research. In this introduction to the special issue we call attention to the mechanisms by which such practices may combine representational and material work to foster and support the development of new knowledge-making communities and institutions. We believe such work can serve as a framework for others engaged in critical making practices to better contextualize and expand the relevance of their work. We intend this special issue to serve as a “stake in the ground” for research on new forms of material-conceptual critique and their incorporation in the repertoire of critical technoscience scholarship.  相似文献   
94.
In laboratory medicine, several studies have described the most frequent errors in the different phases of the total testing process, and a large proportion of these errors occur in the pre-analytical phase. Schemes for registration of errors and subsequent feedback to the participants have been conducted for decades concerning the analytical phase by External Quality Assessment (EQA) organizations operating in most countries. The aim of the paper is to present an overview of different types of EQA schemes for the pre-analytical phase, and give examples of some existing schemes. So far, very few EQA organizations have focused on the pre-analytical phase, and most EQA organizations do not offer pre-analytical EQA schemes (EQAS). It is more difficult to perform and standardize pre-analytical EQAS and also, accreditation bodies do not ask the laboratories for results from such schemes. However, some ongoing EQA programs for the pre-analytical phase do exist, and some examples are given in this paper. The methods used can be divided into three different types; collecting information about pre-analytical laboratory procedures, circulating real samples to collect information about interferences that might affect the measurement procedure, or register actual laboratory errors and relate these to quality indicators. These three types have different focus and different challenges regarding implementation, and a combination of the three is probably necessary to be able to detect and monitor the wide range of errors occurring in the pre-analytical phase.  相似文献   
95.
96.
你是爱,是暖,是希望,你是人间四月天 那些隐匿在黑暗中的云朵瞬间把太阳遮蔽,阳光从云朵里投射出来,映出云朵的轮廓,像一个模糊的幻境。云朵蘸满了墨水一样沉甸甸地粘在暗色的苍穹,欲来的雨云塞满了曾经湛蓝的天空。然后,雨水铺天盖地而来。  相似文献   
97.
98.
99.
Learning that takes place outside the formal classroom, called informal learning, has been a difficult parameter to assess due to the heterogeneous nature of the subjects and everyday learning situations. To date, no instrument has been developed to effectively examine the wide variety of informal experiences a child may encounter. Central to this study was the development and field testing of such an instrument, the Informal Learning Opportunities Assay (ILOA). The ILOA was administered to a total of 2128 middle and high school students and was found to be ethnically neutral, easily scored, and flexible in design to accommodate practitioners and researchers. The instrument was found to provide a reliable assessment of informal learning opportunities.  相似文献   
100.
Findings from a survey of policy professionals in aging (n = 114) and experience with a demonstration program to train policy gerontologists indicates that (1) the demand for policy gerontologists is moderately high; (2) training requirements include specific skills training in political processes, communication, analysis, and administration; (3) policy gerontologists require such personal attributes as follow through, initiative, and innovation; and (4) knowledge of the content of specific policy areas as well as an understanding of the policy‐making process is important. Findings have been used to develop a model curriculum for training policy gerontologists which is presented and 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