全文获取类型
收费全文 | 7302篇 |
免费 | 99篇 |
国内免费 | 21篇 |
专业分类
教育 | 5002篇 |
科学研究 | 771篇 |
各国文化 | 53篇 |
体育 | 716篇 |
综合类 | 8篇 |
文化理论 | 89篇 |
信息传播 | 783篇 |
出版年
2023年 | 47篇 |
2022年 | 81篇 |
2021年 | 113篇 |
2020年 | 194篇 |
2019年 | 312篇 |
2018年 | 369篇 |
2017年 | 390篇 |
2016年 | 328篇 |
2015年 | 227篇 |
2014年 | 257篇 |
2013年 | 1290篇 |
2012年 | 203篇 |
2011年 | 206篇 |
2010年 | 172篇 |
2009年 | 135篇 |
2008年 | 138篇 |
2007年 | 170篇 |
2006年 | 137篇 |
2005年 | 99篇 |
2004年 | 107篇 |
2003年 | 103篇 |
2002年 | 76篇 |
2001年 | 121篇 |
2000年 | 142篇 |
1999年 | 103篇 |
1998年 | 86篇 |
1997年 | 72篇 |
1996年 | 72篇 |
1995年 | 55篇 |
1994年 | 54篇 |
1993年 | 42篇 |
1992年 | 84篇 |
1991年 | 78篇 |
1990年 | 74篇 |
1989年 | 67篇 |
1988年 | 78篇 |
1987年 | 66篇 |
1986年 | 86篇 |
1985年 | 77篇 |
1984年 | 61篇 |
1983年 | 72篇 |
1982年 | 56篇 |
1981年 | 45篇 |
1979年 | 56篇 |
1978年 | 57篇 |
1977年 | 43篇 |
1976年 | 45篇 |
1975年 | 34篇 |
1974年 | 35篇 |
1973年 | 37篇 |
排序方式: 共有7422条查询结果,搜索用时 7 毫秒
11.
12.
13.
14.
15.
16.
17.
Tatjana Bayerová 《文物保护研究》2018,63(3):171-188
The technical study of wall paintings from the Buddhist temple complex at Nako, Western Himalayas, was one of the basic preconditions required for designing an appropriate conservation strategy. The complex, composed of four temples from the eleventh–twelfth century, offered a unique possibility to carry out a comprehensive research of technology and painting materials used in early and later western Tibetan Buddhist wall paintings as well as a comparative assessment with murals from other sites in the Western Himalayas. The study was based on extensive fieldwork and an integrated analytical approach comprising a wide range of non-destructive and micro-destructive methods. Answering the question of the coevality of paintings in the smaller temples with other original murals, the precise characterisation of binding media, the detection of the yellow dye gamboge and natural minerals posnjakite and brochantite identified for the first time in Himalayan murals, the clarification of technology of metal decoration, and the making of raised elements are some of the most exciting results which emerged from the research. 相似文献
18.
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
19.
Jorge Peña Subuhi Khan Christopher N. Burrows Hart Blanton 《Communication Research Reports》2018,35(4):293-302
This study examined whether persuasive health messages embedded in shooter games have broad or targeted effects on players’ willingness to engage in risk behaviors (N = 145). Participants presented with in-game health messages discouraging alcohol-impaired driving of motor vehicles showed reduced willingness to drink alcohol and to operate both motor and nonmotor vehicles, compared to those in a no-message gaming control condition. There were no spillover effects on willingness to smoke cigarettes or marijuana, thus implying targeted persuasive effects. In addition, players experiencing high instead of low cognitive load showed decreased postexperiment willingness to drink and operate nonmotor vehicles, thus suggesting that playing a game under high cognitive load can influence players’ attitudes. The findings replicate previous research and further expand on knowledge-activation and thought-disruption mechanisms underlying the persuasiveness of health messages. 相似文献
20.