全文获取类型
收费全文 | 2623篇 |
免费 | 50篇 |
国内免费 | 1篇 |
专业分类
教育 | 1916篇 |
科学研究 | 138篇 |
各国文化 | 40篇 |
体育 | 347篇 |
综合类 | 2篇 |
文化理论 | 57篇 |
信息传播 | 174篇 |
出版年
2023年 | 25篇 |
2022年 | 34篇 |
2021年 | 66篇 |
2020年 | 107篇 |
2019年 | 179篇 |
2018年 | 221篇 |
2017年 | 207篇 |
2016年 | 186篇 |
2015年 | 118篇 |
2014年 | 134篇 |
2013年 | 588篇 |
2012年 | 110篇 |
2011年 | 79篇 |
2010年 | 58篇 |
2009年 | 68篇 |
2008年 | 48篇 |
2007年 | 52篇 |
2006年 | 44篇 |
2005年 | 35篇 |
2004年 | 33篇 |
2003年 | 31篇 |
2002年 | 31篇 |
2001年 | 20篇 |
2000年 | 24篇 |
1999年 | 15篇 |
1998年 | 14篇 |
1997年 | 10篇 |
1996年 | 16篇 |
1995年 | 13篇 |
1994年 | 10篇 |
1993年 | 6篇 |
1992年 | 8篇 |
1991年 | 10篇 |
1990年 | 11篇 |
1989年 | 10篇 |
1988年 | 6篇 |
1985年 | 4篇 |
1983年 | 7篇 |
1982年 | 2篇 |
1981年 | 4篇 |
1980年 | 2篇 |
1979年 | 2篇 |
1978年 | 4篇 |
1977年 | 3篇 |
1976年 | 3篇 |
1975年 | 2篇 |
1963年 | 2篇 |
1962年 | 1篇 |
1960年 | 2篇 |
1959年 | 1篇 |
排序方式: 共有2674条查询结果,搜索用时 15 毫秒
1.
2.
María Inés Tato 《档案与原稿》2020,48(2):200-215
ABSTRACT This paper aims to analyse the initiatives undertaken by some immigrant communities residing in Latin America to record their mobilisation around the First World War. After the armistice, European communities in Argentina, Bolivia, Brazil, Chile, Mexico, Paraguay, Peru, Uruguay and other countries gathered detailed information about their activities during the conflict, published as profusely illustrated books of remembrance, offered to their governments as proof of their loyalty. The article intends to establish the peculiar nature of these publications as records of the war effort, and analyse the agents and processes of their elaboration, and their role as commemorative but also as archival documents. 相似文献
3.
4.
5.
Katharine Treptow Farrell Marc Truitt 《Library Collections, Acquisitions, and Technical Services》2004,27(4):42-492
Acquisitions metadata within current library integrated systems is not based on any standard; rather, systems vendors generally define structure and content according to proprietary approaches. The authors argue that this cripples library acquisitions practitioners and managers in numerous ways. It renders routine tasks more difficult, jeopardizes the integrity of data during system migration, forces adoption of costly external tracking solutions, and hinders efforts to manage collections and budgets. The authors define acquisitions standards and relate them to existing bibliographic and e-commerce protocols. They discuss reasons for the lack of acquisitions standards and outline first steps in a project to develop them. This paper is based on a presentation given at the Acquisitions Institute at Timberline Lodge, Fourth Annual Conference, held 17-20 May 2003. 相似文献
6.
Julie J McGowan J Marc Overhage Mike Barnes Clement J McDonald 《Journal of the Medical Library Association》2004,92(2):179-187
In 2001, the Regenstrief Institute for Health Care and the Indiana University School of Medicine (IUSM) began an IAIMS planning effort to create a vision and a tactical plan for the first Integrated Advanced Information Management Systems (IAIMS) implementation to cross a large area and include unaffiliated institutions. A number of elements made this planning effort unique. Among these elements were the existence of a network infrastructure that supported the Indianapolis Network for Patient Care, the existence of a mature medical informatics program at the Regenstrief Institute, and the existence of a wide-area knowledge network fostered by the IUSM libraries. However, the leadership for a strong information technology role in the IUSM that could promote collaboration in support of education and research across the diverse Indianapolis hospital systems had been lacking. By bringing together various groups, each with a commitment to improve health care quality and public health across the Indianapolis metropolitan area, regardless of individual institutional affiliation, the strategic directions for I3-Indianapolis IAIMS Initiative have been defined and the foundations for a third generation IAIMS construct have been laid in Indianapolis, Indiana. 相似文献
7.
博物馆的新作用 新博物馆学的创始人之一,前美国华盛顿特区的阿那克斯亚邻里博物馆馆长约翰.科纳德将博物馆角色描述如下:“如果博物馆能够满足人们今天和明天的需求,必须将博物馆建设于人类生存的每一个地方。这就是对人类创造性资源的挑战性答复。而现在,他们面对着三种批评:没有对大多数人们的要求做出反应。没有应用过去铭刻的知识关联反映今天,或没有用它们解决今天的问题。 相似文献
8.
Heather E. Canary Kris May Marc D. Rinehart Jahn B. Barlow 《Journal of Applied Communication Research》2018,46(2):202-222
Organizational communication scholars are increasingly called upon to use theoretical knowledge to address problematic processes in public institutions. This article reports a process improvement project focused on a university conflict of interest (COI) policy as an example of how scholars can engage theory to improve ongoing policy processes. The project team included communication scholars and research administration staff who designed, implemented, and evaluated the mixed-methods project guided by structurating activity theory. Baseline survey results were used to design the process improvement project. Results of the follow-up survey indicate that researchers who participated in some aspect of the process improvement project (i.e. attending a policy café, using the redesigned website, or reading the new Quick Reference Guide) reported higher levels of policy communication and knowledge and more positive attitudes toward the COI policy than researchers who had not engaged with process improvement efforts. We offer theoretical and practical implications of results for organizational communication scholars and practitioners. 相似文献
9.
Binge-watching—the intensive, consecutive viewing of televised series—has become a prevalent usage pattern of entertainment media, which may influence users’ psychological well-being both positively and negatively: On the one hand, binge-watching could increase viewers’ enjoyment, recovery experiences, and vitality through an increase in perceived autonomy. On the other hand, binge-watching can trigger goal conflicts and feelings of guilt, which may reduce well-being. Drawing on an online survey (N = 499), the present study examines the tension between these two mechanisms and their effects on users’ well-being. The data largely support the hypotheses: Binge-watching is perceived as recreational as long as goal conflicts and feelings of guilt can be avoided. Well-being, on the other hand, is positively affected by binge-watching-induced increases in perceived autonomy. These results corroborate the central role of self-determination as a link between media reception, media enjoyment, and psychological well-being. 相似文献
10.
Debasis?GangulyEmail authorView authors OrcID profile Gareth?J.?F.?Jones Aarón?Ramírez-de-la-Cruz Gabriela?Ramírez-de-la-Rosa Esaú?Villatoro-Tello 《Information Retrieval》2018,21(1):1-23
Automatic detection of source code plagiarism is an important research field for both the commercial software industry and within the research community. Existing methods of plagiarism detection primarily involve exhaustive pairwise document comparison, which does not scale well for large software collections. To achieve scalability, we approach the problem from an information retrieval (IR) perspective. We retrieve a ranked list of candidate documents in response to a pseudo-query representation constructed from each source code document in the collection. The challenge in source code document retrieval is that the standard bag-of-words (BoW) representation model for such documents is likely to result in many false positives being retrieved, because of the use of identical programming language specific constructs and keywords. To address this problem, we make use of an abstract syntax tree (AST) representation of the source code documents. While the IR approach is efficient, it is essentially unsupervised in nature. To further improve its effectiveness, we apply a supervised classifier (pre-trained with features extracted from sample plagiarized source code pairs) on the top ranked retrieved documents. We report experiments on the SOCO-2014 dataset comprising 12K Java source files with almost 1M lines of code. Our experiments confirm that the AST based approach produces significantly better retrieval effectiveness than a standard BoW representation, i.e., the AST based approach is able to identify a higher number of plagiarized source code documents at top ranks in response to a query source code document. The supervised classifier, trained on features extracted from sample plagiarized source code pairs, is shown to effectively filter and thus further improve the ranked list of retrieved candidate plagiarized documents. 相似文献