全文获取类型
收费全文 | 3627篇 |
免费 | 46篇 |
国内免费 | 4篇 |
专业分类
教育 | 2720篇 |
科学研究 | 242篇 |
各国文化 | 46篇 |
体育 | 359篇 |
综合类 | 7篇 |
文化理论 | 71篇 |
信息传播 | 232篇 |
出版年
2023年 | 32篇 |
2022年 | 72篇 |
2021年 | 99篇 |
2020年 | 142篇 |
2019年 | 224篇 |
2018年 | 268篇 |
2017年 | 263篇 |
2016年 | 234篇 |
2015年 | 166篇 |
2014年 | 179篇 |
2013年 | 751篇 |
2012年 | 183篇 |
2011年 | 130篇 |
2010年 | 79篇 |
2009年 | 92篇 |
2008年 | 83篇 |
2007年 | 77篇 |
2006年 | 54篇 |
2005年 | 62篇 |
2004年 | 54篇 |
2003年 | 48篇 |
2002年 | 53篇 |
2001年 | 27篇 |
2000年 | 22篇 |
1999年 | 13篇 |
1998年 | 21篇 |
1997年 | 13篇 |
1996年 | 22篇 |
1995年 | 17篇 |
1994年 | 17篇 |
1993年 | 14篇 |
1992年 | 15篇 |
1991年 | 15篇 |
1990年 | 12篇 |
1989年 | 14篇 |
1988年 | 10篇 |
1987年 | 7篇 |
1986年 | 4篇 |
1985年 | 5篇 |
1984年 | 5篇 |
1983年 | 6篇 |
1981年 | 5篇 |
1980年 | 7篇 |
1979年 | 8篇 |
1978年 | 6篇 |
1977年 | 7篇 |
1976年 | 7篇 |
1971年 | 3篇 |
1970年 | 4篇 |
1965年 | 3篇 |
排序方式: 共有3677条查询结果,搜索用时 31 毫秒
1.
Edgardo Ferretti Leticia Cagnina Viviana Paiz Sebastián Delle Donne Rodrigo Zacagnini Marcelo Errecalde 《Information processing & management》2018,54(6):1169-1181
In this work, we present the first quality flaw prediction study for articles containing the two most frequent verifiability flaws in Spanish Wikipedia: articles which do not cite any references or sources at all (denominated Unreferenced) and articles that need additional citations for verification (so-called Refimprove). Based on the underlying characteristics of each flaw, different state-of-the-art approaches were evaluated. For articles not citing any references, a well-established rule-based approach was evaluated and interesting findings show that some of them suffer from Refimprove flaw instead. Likewise, for articles that need additional citations for verification, the well-known PU learning and one-class classification approaches were evaluated. Besides, new methods were compared and a new feature was also proposed to model this latter flaw. The results showed that new methods such as under-bagged decision trees with sum or majority voting rules, biased-SVM, and centroid-based balanced SVM, perform best in comparison with the ones previously published. 相似文献
2.
3.
4.
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
5.
6.
Kristjana Kristinsdóttir 《Archival Science》2003,3(2):199-204
The article sets off with a brief summary of the history of appraisal and disposal of records as processed at the National Archives of Iceland (NAI) since its establishment in 1882 to present times. Rules on appraisal and disposal of records introduced in 1900, 1911, and 1916 were ignored and all records were kept. Status quo remained until 1985 when a new National Archives Act was passed. The appraisal and disposal process adopted then is described and explained. It included the publication of instructions on records management as well as forms relating to records management. The influence of acts of law on the appraisal and disposal process is explained. Finally the experience with the arrangement of organised appraisal in Iceland is described. 相似文献
7.
In South Africa the education system for black children is fraught with problems. These problems are the direct result of apartheid and have been compounded by poverty and illiteracy. In this article the problem of poorly qualified or unqualified teachers is discussed especially with regard to the teaching of map skills to children in their fifth school year. The project team needed to develop affordable materials which could be used in large classes by teachers after a very short period of training. Books and other materials which are available commercially were examined, but for various reasons were found to be unsuitable for local conditions. After determining the extent of the problem, the project team followed a grassroots process of developing a flip chart which teachers learnt to use with confidence and which enabled pupils to master the concepts and skills necessary for understanding a map. 相似文献
8.
采用日常生活活动功能指数、丧失率、L ogistic回归分析 ,对江西省上饶市老年人日常生活活动独立自理能力进行评价并对其影响因素进行研究。结果表明 ,江西省上饶市老年人日常生活活动功能的丧失率随年龄的增长而增大 ,男性高于女性 ,下肢高于上肢 ,丧失率随活动的复杂程度及难度的增大而上升。身体健康是影响老年人日常生活活动功能的最主要因素 ,其次是社会经济、心理、精神等因素。 相似文献
9.
10.
Katherine I. Miller - Katherine Miller is a Professor Director of Graduate Studies in the 《Journal of Applied Communication Research》2008,36(1):8-32
There is growing interest in the role of emotion when considering communication in the workplace. This work has most often considered workers in front-line service positions in investigations of emotional labor, and human service workers in investigations of empathy and emotional work. In this study, we consider processes of both emotional labor and emotional work in the financial planning profession. Financial planners occupy a role requiring ongoing relationships with clients, conversations about the often emotional topic of money, and a need to manage emotion in a variety of interaction contexts. Thus, from extant theory and literature regarding emotion and communication, we proposed research questions regarding the roles of emotional labor and emotional work in the financial planning profession. These questions were investigated in a web-based survey study of almost 300 professional financial planners and supporting interviews with 14 financial planners. Results indicate support for existing theory on emotional work, extensions to current research regarding emotional labor, and important implications for the role of emotion and communication in a range of professional service roles. 相似文献