全文获取类型
收费全文 | 25456篇 |
免费 | 407篇 |
国内免费 | 30篇 |
专业分类
教育 | 18246篇 |
科学研究 | 2500篇 |
各国文化 | 204篇 |
体育 | 1830篇 |
综合类 | 41篇 |
文化理论 | 252篇 |
信息传播 | 2820篇 |
出版年
2022年 | 137篇 |
2021年 | 254篇 |
2020年 | 370篇 |
2019年 | 502篇 |
2018年 | 776篇 |
2017年 | 889篇 |
2016年 | 894篇 |
2015年 | 545篇 |
2014年 | 634篇 |
2013年 | 4326篇 |
2012年 | 713篇 |
2011年 | 785篇 |
2010年 | 561篇 |
2009年 | 488篇 |
2008年 | 585篇 |
2007年 | 559篇 |
2006年 | 483篇 |
2005年 | 1037篇 |
2004年 | 862篇 |
2003年 | 627篇 |
2002年 | 512篇 |
2001年 | 488篇 |
2000年 | 428篇 |
1999年 | 425篇 |
1998年 | 216篇 |
1997年 | 235篇 |
1996年 | 262篇 |
1995年 | 216篇 |
1994年 | 212篇 |
1993年 | 194篇 |
1992年 | 303篇 |
1991年 | 300篇 |
1990年 | 331篇 |
1989年 | 313篇 |
1988年 | 296篇 |
1987年 | 252篇 |
1986年 | 256篇 |
1985年 | 322篇 |
1984年 | 266篇 |
1983年 | 255篇 |
1982年 | 196篇 |
1981年 | 206篇 |
1980年 | 176篇 |
1979年 | 240篇 |
1978年 | 214篇 |
1977年 | 194篇 |
1976年 | 162篇 |
1975年 | 128篇 |
1974年 | 120篇 |
1973年 | 147篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
111.
112.
E.?I.?KozlovaEmail author O.?A.?Antoshkova 《Scientific and Technical Information Processing》2018,45(1):14-21
This paper characterizes the methodological foundations of national standardization in the Russian Federation, in particular in the library and information field. The activities of Technical Standardization Committee 191 Scientific and Technical Information, Librarianship, and Publishing are reported. 相似文献
113.
The basic properties of the blockchain technology are discussed to allow informed decisions on its selection and use in scientific and information activities. Specific examples are given and the efficiency of this technology is analyzed. 相似文献
114.
This paper explores the information nature of culture. It is represented as an extragenetic and nonorganizational information process and system. Information is regarded as a universal property of matter that is essentially associated with development processes and realizes various forms and ways of storage and circulation at various development stages of global evolution. The socio-cultural principle of exogenous accumulation, transmission, and transformation of information is analyzed in the context of the continuing growth of the information content of material systems on the superhighway of global-universal evolution. It is noted that the information concept of culture evolves into a new area of cultural studies, that is information and cultural studies, advancing our understanding of the nature of culture and cultural genesis. 相似文献
115.
P. A. Kalachikhin 《Scientific and Technical Information Processing》2018,45(1):28-34
The issues related to funding of public research organizations are explored. The history of scientometric information systems is outlined. The advantages and disadvantages of a bibliometric approach to financing of research organizations are analyzed. The link between the assessment of the scientific and technological potential of an institution and the optimal allocation of funds is investigated. Recommendations on how to improve the efficiency of public resources allocated for scientific research are presented. 相似文献
116.
The information practices of collaborative interdisciplinary researchers, especially in distributed environments, remain understudied. Embracing the naturalistic paradigm, this qualitative case study relies upon semi-structured interviews, snowball sampling, and grounded analysis. Based on interviews with 53 participants from 11 Digging Into Data 3 (DID3, 2014-2016) projects, this study examines the working practices of scholars (library and information science professionals, humanists, and computer scientists) engaging in collaborative, international, data-intensive, publicly-funded interdisciplinary research. Benefits of such work include avoiding redundancy, exploding disciplinary silos, and more ambitious, larger-scale outputs. Challenges and lessons learned center on innovation, flexibility, and failure, translation, intermediaries, divisions of labor and delegation of responsibilities and tasks, conflict resolution, technology, outputs and publication, and timeframe, sustainability, and infrastructure. 相似文献
117.
John A. Velez David R. Ewoldsen Michael D. Hanus Hyunjin Song Jonathan A. Villarreal 《Communication Research Reports》2018,35(5):424-433
This study examines how social comparison information provided by video game leaderboards may influence players’ retrospective judgments of autonomy, competence, and relatedness need fulfillment. Participants played a video game and were randomly assigned to receive no postgame feedback or were shown a leaderboard that placed them in the top or bottom quartile of players. Results indicate downward social comparisons increase enjoyment by increasing competence and relatedness perceptions. However, upward comparisons did not have an opposite effect, nor did either type of social comparison influence players’ autonomy perceptions. Implications for applying Self-Determination Theory to video game enjoyment in the context of social comparison feedback is discussed. 相似文献
118.
Increased genetic testing in personalized medicine presents unique challenges for couples, including managing disease risk and potential discrimination as a couple. This study investigated couples’ conflicts and support gaps as they coped with perceived genetic discrimination. We also explored the degree to which communal coping was beneficial in reducing support gaps and ultimately stress. Dyadic analysis of married adults (N?=?266, 133 couples), in which one person had the genetic risk for serious illness, showed that perceived discrimination predicted more frequent conflicts about alpha-1 antitrypsin deficiency-related treatment, privacy boundaries, and finances, which, in turn, predicted wider gaps in emotion and esteem support, and greater stress for both spouses. Communal coping predicted lower support gaps for both partners and marginally lower stress. 相似文献
119.
120.
Genetics Home Reference is a free, online resource created and maintained by the National Library of Medicine. It is designed to provide genetic information to a wide variety of audiences, particularly the general public. The site consists of original information and links to other curated resources. 相似文献