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   12766篇
  免费   28篇
教育   9849篇
科学研究   1248篇
各国文化   20篇
体育   428篇
综合类   1篇
文化理论   394篇
信息传播   854篇
  2024年   2篇
  2023年   8篇
  2022年   19篇
  2021年   35篇
  2020年   48篇
  2019年   77篇
  2018年   2237篇
  2017年   2165篇
  2016年   1628篇
  2015年   155篇
  2014年   174篇
  2013年   370篇
  2012年   257篇
  2011年   733篇
  2010年   867篇
  2009年   469篇
  2008年   671篇
  2007年   1181篇
  2006年   90篇
  2005年   410篇
  2004年   473篇
  2003年   375篇
  2002年   151篇
  2001年   19篇
  2000年   35篇
  1999年   11篇
  1998年   12篇
  1997年   25篇
  1996年   6篇
  1995年   8篇
  1994年   11篇
  1993年   6篇
  1992年   3篇
  1991年   13篇
  1990年   3篇
  1989年   2篇
  1988年   6篇
  1987年   3篇
  1986年   6篇
  1984年   2篇
  1982年   3篇
  1981年   4篇
  1978年   5篇
  1976年   2篇
  1975年   2篇
  1972年   1篇
  1971年   1篇
  1967年   1篇
  1934年   1篇
  1926年   1篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
971.
In February 2008 the Book Industry Study Group (BISG) conducted a survey of U.S. publishers to determine the extent of technology-driven innovation and experimentation. The survey findings were published alongside a set of 10 case studies in May 2008 as “From experimentation to innovation in the digital age—case studies from the North American Book Industry 2008”. This article, written by Michael Healy, Executive Director of the BISG, summarizes the circumstances that led to the survey and shares the key findings.  相似文献   
972.
This article addresses the trajectory of Archival Science in Brazil, its extracurricular characteristics and its particular relationship with Information Science within academics, its institutional associations, and some considerations regarding current training for archivists in Brazil. The methodological procedures used included analyzing documents from the National Archive Fonds of Brazil, reviewing archive literature, and interviewing people involved in consolidating Archival Science. This study concludes that Archival Science research is taking place in graduate programs throughout public Brazilian universities and points out that people working with archives now have more advanced training, such as undergraduate degrees in Archival Science or other. This study also focuses on archives as information units, while presenting and reflecting on the demands of training archivists who are faced with the challenges of the working world and the era of information and knowledge—challenges that go beyond merely technical procedures and encompass dynamic planning and orientation activities.  相似文献   
973.
A compressed full-text self-index for a text T, of size u, is a data structure used to search for patterns P, of size m, in T, that requires reduced space, i.e. space that depends on the empirical entropy (H k or H 0) of T, and is, furthermore, able to reproduce any substring of T. In this paper we present a new compressed self-index able to locate the occurrences of P in O((m + occ)log u) time, where occ is the number of occurrences. The fundamental improvement over previous LZ78 based indexes is the reduction of the search time dependency on m from O(m 2) to O(m). To achieve this result we point out the main obstacle to linear time algorithms based on LZ78 data compression and expose and explore the nature of a recurrent structure in LZ-indexes, the suffix tree. We show that our method is very competitive in practice by comparing it against other state of the art compressed indexes.
Arlindo L. OliveiraEmail:
  相似文献   
974.
This article analyzes online qualitative survey responses from 43 television time shifters who knew narrative content (spoilers) about a particular show before they decided to watch. Twenty of the study participants cited narrative content and/or their spoiler sources as the reason they chose to watch. We ultimately argue that television spoilers can function as teasers, leading would-be viewers to enjoyable shows. In doing so, we expand the definition of spoiler, offering insight into how spoilers can create rather than ruin opportunities for narrative pleasure.  相似文献   
975.
976.
977.
Gary Ruvkun is a winner of the 2015 Breakthrough Prize in Life Sciences. He is a co-discoverer of microRNAs (with Victor Ambros, University of Massachusetts), regarded as one of the seminal discoveries of 21st century molecular biology. In addition to the Breakthrough Prize, Ruvkun and Ambros have received the Warren Triennial Prize, the Laskar Foundation Award, and numerous other awards and prizes. Professor Ruvkun obtained his PhD from Harvard University, did his postdoctoral research at MIT, and subsequently accepted a faculty position at Harvard, where he is currently Professor of Genetics. His laboratory conducts research on basic cellular processes, using the worm C. elegans as a model system.  相似文献   
978.
V Rajaraman 《Resonance》2017,22(12):1175-1192
Multi-core microprocessor is an interconnected set of independent processors called cores integrated on a single silicon chip. These processing cores communicate and cooperate with one another to execute one or more programs faster than a single core processor. In this article we describe how and why these types of processors evolved. We also describe the basics of how multi-core microprocessors are programmed.  相似文献   
979.
In order to find new ways of growing the market, the Dutch General Publishers Association developed an innovation-competition for startups worldwide to bring innovative thinking and ideas into the Dutch Publishing Industry. The competition is the first and only program dedicated to startups leveraging new and creative business ideas around all the elements of book publishing and has its second edition this year. The competition is for startups, who are active in areas such as publishing automation, book retail, data analytics, authoring, book content development, and audience engagement.  相似文献   
980.
This article outlines in detail the ten strategic goals that the UAE publishing industry has identified to lead a comprehensive transformation of the industry and to cement its position as a regional leader. The main goals revolve around building regional and global partnerships, developing a global publishing hub, improving legal framework for the all the stakeholders of the industry, building quality Arabic content for local and regional readers, supporting educational publishing, launching initiatives to encourage reading for pleasure, improving distribution networks and retail, transforming libraries, and instilling a sense of pride and understanding of local culture while supporting creative talents and skills. Also, this article will share information about some leading initiatives being implemented in Sharjah and the United Arab Emirates, and future initiatives to be implemented to achieve the ten goals.  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