全文获取类型
收费全文 | 22644篇 |
免费 | 164篇 |
国内免费 | 12篇 |
专业分类
教育 | 16558篇 |
科学研究 | 2382篇 |
各国文化 | 112篇 |
体育 | 1202篇 |
综合类 | 4篇 |
文化理论 | 471篇 |
信息传播 | 2091篇 |
出版年
2022年 | 66篇 |
2021年 | 126篇 |
2020年 | 174篇 |
2019年 | 254篇 |
2018年 | 2563篇 |
2017年 | 2456篇 |
2016年 | 1947篇 |
2015年 | 357篇 |
2014年 | 470篇 |
2013年 | 2000篇 |
2012年 | 518篇 |
2011年 | 1057篇 |
2010年 | 1113篇 |
2009年 | 684篇 |
2008年 | 936篇 |
2007年 | 1401篇 |
2006年 | 303篇 |
2005年 | 601篇 |
2004年 | 674篇 |
2003年 | 552篇 |
2002年 | 324篇 |
2001年 | 241篇 |
2000年 | 241篇 |
1999年 | 215篇 |
1998年 | 117篇 |
1997年 | 182篇 |
1996年 | 146篇 |
1995年 | 114篇 |
1994年 | 117篇 |
1993年 | 92篇 |
1992年 | 186篇 |
1991年 | 165篇 |
1990年 | 139篇 |
1989年 | 171篇 |
1988年 | 145篇 |
1987年 | 115篇 |
1986年 | 132篇 |
1985年 | 123篇 |
1984年 | 95篇 |
1983年 | 110篇 |
1982年 | 84篇 |
1981年 | 89篇 |
1980年 | 70篇 |
1979年 | 127篇 |
1978年 | 74篇 |
1977年 | 78篇 |
1976年 | 67篇 |
1975年 | 55篇 |
1974年 | 66篇 |
1973年 | 59篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
71.
Maxfield DK 《Bulletin of the Medical Library Association》1975,63(3):345-346
72.
基于域加权词频法的XML文档级检索实现与评价 总被引:1,自引:0,他引:1
利用BM25F模型,通过实验,在INEX 04数据集的基础上,实现了对多个域(元素)词频进行加权的XML文档级检索。XML文档结构的确蕴含了一定的语义信息。利用这些语义信息,可以提高检索性能。表2。图1。参考文献16。 相似文献
73.
Karyn Ogata Jones Bryan E. Denham Jeffrey K. Springston 《Journal of Applied Communication Research》2006,34(1):94-113
Drawing on components of agenda-setting theory and the two-step flow of information from mass media to news audiences, this study examines the effects of mass and interpersonal communication on breast cancer screening practices among college- and middle-aged women (n = 284). We theorized that screening behaviors among younger women would be influenced more by interpersonal sources of information while screening among middle-aged women would be more influenced by exposure to mass-mediated information. Findings supported anticipated patterns, revealing important and varying roles for both mass and interpersonal communication in the health behaviors of women. Implications for health practitioners and campaign planners, as well as recommendations for future research, are discussed. 相似文献
74.
Toyo Yoshizaki 《Publishing Research Quarterly》2004,19(4):31-36
Summary Now more than ever good translations are proving to be vitally important to fulfilling Shoichi Noma’s mission of advancing
good relationships between cultures. With the emergence of dozens of world-class Japanese writers, the translators of Japanese
literature have acquired a new significance and a new importance. No longer are they required to simply handle the language
like an exotic and precious commodity but they must prepare a writer’s work to compete with literature from around the globe
and let others understand the issues at their very heart of the Japanese people.
Indeed, the selection committee’s choice of Murakami’s Wind-Up Bird Chronicle is an apt example of how literature at its very best can span cultural divides to promote mutual understanding of very complicated
and important world issues. Written for Japanese to help them understand the devastation of war, it is a rare and timely book
that confronts Japan’s experience head on. Ironically, Noma’s idea that books are silent ambassadors, an idea born from agony
and defeat, so many years later is helping the world come together towards a unified vision of peace and understanding.
“Literature has been described as a means of exchange between the hearts of people. Literary translation, then, is the building
of bridges so that all peoples of the world can interact in this way.”
Ye Weiqu, Chinese Institute of Social Studies. 相似文献
75.
76.
Stephen Pinfield 《Learned Publishing》2004,17(4):305-312
77.
78.
Question classification systems play an important role in question answering systems and can be used in a wide range of other domains. The goal of question classification is to accurately assign labels to questions based on expected answer type. Most approaches in the past have relied on matching questions against hand-crafted rules. However, rules require laborious effort to create and often suffer from being too specific. Statistical question classification methods overcome these issues by employing machine learning techniques. We empirically show that a statistical approach is robust and achieves good performance on three diverse data sets with little or no hand tuning. Furthermore, we examine the role different syntactic and semantic features have on performance. We find that semantic features tend to increase performance more than purely syntactic features. Finally, we analyze common causes of misclassification error and provide insight into ways they may be overcome. 相似文献
79.
Leanne K. Knobloch Erin D. Basinger Jennifer A. Theiss 《Journal of Applied Communication Research》2018,46(1):52-73
The transition from deployment to reintegration can be stressful for returning military personnel and at-home partners, and support plays a key role in their ability to transition effectively. We draw on relational turbulence theory to advance predictions about how parameters of the relationship between returning service members and at-home partners predict their perceptions of their partner’s support during the post-deployment transition. We surveyed 235 individuals (117 returning service members, 118 at-home partners) who had experienced the transition within the past 6 months. Findings consistent with the theory indicated that relational turbulence partially mediated the negative associations that relational uncertainty and interference from a partner shared with partner support. Partner uncertainty was a direct negative predictor of partner support as well. We consider how these results extend theory, research, and practice. 相似文献
80.
Yu. N. Schuko 《Scientific and Technical Information Processing》2018,45(3):163-167
Although the USSR and the United States had a comparable number of employees in the field of scientific information, there was a substantial difference in funding, which resulted in a lack of information support for Soviet scientists. While 90% of the publications in the United States were available almost immediately after their release, in the USSR they were delayed by 1.5 to 2 years. Since the publication of the Abstracts Journal by VINITI (AJ), its content was consistently expanding and reached its peak in 1990 (1.5 million documents per year). The next quarter of a century was characterized by a decline in both the composition of the AJ and the time required for its document coverage. The steps for restructuring VINITI activities are discussed. The focus is made on improving the limited coverage of the Russian-language part of the global flow of scientific information by Western information systems. 相似文献