全文获取类型
收费全文 | 23308篇 |
免费 | 367篇 |
国内免费 | 15篇 |
专业分类
教育 | 16675篇 |
科学研究 | 2037篇 |
各国文化 | 226篇 |
体育 | 1921篇 |
综合类 | 13篇 |
文化理论 | 178篇 |
信息传播 | 2640篇 |
出版年
2022年 | 183篇 |
2021年 | 265篇 |
2020年 | 388篇 |
2019年 | 614篇 |
2018年 | 845篇 |
2017年 | 824篇 |
2016年 | 722篇 |
2015年 | 430篇 |
2014年 | 677篇 |
2013年 | 4501篇 |
2012年 | 641篇 |
2011年 | 654篇 |
2010年 | 478篇 |
2009年 | 493篇 |
2008年 | 547篇 |
2007年 | 491篇 |
2006年 | 435篇 |
2005年 | 419篇 |
2004年 | 373篇 |
2003年 | 364篇 |
2002年 | 352篇 |
2001年 | 486篇 |
2000年 | 399篇 |
1999年 | 367篇 |
1998年 | 208篇 |
1997年 | 216篇 |
1996年 | 245篇 |
1995年 | 237篇 |
1994年 | 186篇 |
1993年 | 204篇 |
1992年 | 325篇 |
1991年 | 301篇 |
1990年 | 300篇 |
1989年 | 300篇 |
1988年 | 259篇 |
1987年 | 304篇 |
1986年 | 269篇 |
1985年 | 306篇 |
1984年 | 250篇 |
1983年 | 218篇 |
1982年 | 195篇 |
1981年 | 165篇 |
1980年 | 161篇 |
1979年 | 260篇 |
1978年 | 183篇 |
1977年 | 170篇 |
1976年 | 153篇 |
1975年 | 142篇 |
1974年 | 147篇 |
1971年 | 140篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
71.
72.
73.
Michael M. Widdersheim 《Library & information science research》2018,40(2):144-152
History and case study are two diachronic research strategies commonly used to study political discourse as it relates to public libraries. Though suitable for some studies, these strategies are inexhaustive. A new, blended research strategy is therefore needed to accomplish what history and case study alone cannot. This hybrid strategy, historical case study, must analyze cases from the distant past to the present, using eclectic data sources, in order to produce both idiographic and nomothetic knowledge. To develop historical case study, the universal components of diachronic analysis are first identified. A general research design for historical case study is then introduced. Finally, historical case study is tested in an actual research project. Findings from this project reveal that historical case study is a successful diachronic research strategy. Historical case study is a new and valuable research design suitable for addressing questions related to change, continuity, development, and evolution. 相似文献
74.
In the aftermath of the 2016 election of President Trump, a veritable cottage industry of opinion pieces, blogs, and articles emerged overnight, most of which seemed to agree that only the post-truth could explain how a racist, misogynistic, neo-nationalist member of the economic elite could win a presidential election. This article, in contrast, is inspired by Barbara Christian’s injunction that we question why a given statement, concept, or theory is now acceptable when before it was not. Operating in this spirit, we critique post-truth critics for neglecting the material tradition of ideological criticism in favor of epistemological explanations for understanding post-truth literature; we then offer two case studies—American drug policy and housing policy—to illustrate the racial amnesia required for claiming that only now do we live in a post-truth era. 相似文献
75.
76.
Wondwossen M. Beyene 《Journal of Web Librarianship》2018,12(2):121-140
Digital inclusion is a strategy pursued to foster social inclusion of those who have been sidelined from the mainstream of information society due to lack of access to digital technologies and the skills to use them. Libraries have been working to close the gap by providing access to computers, the Internet, digital content, and digital literacy programs. However, research reveals a new type of divide where digitally competent people could be digitally excluded. This shows the need for a better conceptualization of access and literacy. This paper commits to exploring the concept of access to digital content from the perspective of people with print disability. It involved in-depth interviews with ten participants with print disability where the International Classification of Functioning, Disability, and Health was used as a framework for data analysis. The overall analysis shows that digital inclusion would be more meaningful if it involved providing content in alternative formats and empowering users to make informed choices. Issues such as flexibility and adaptability in content presentation and design of content discovery tools are among those discussed. 相似文献
77.
78.
The relationship between peak height velocity and physical performance in youth soccer players 总被引:1,自引:1,他引:0
Philippaerts RM Vaeyens R Janssens M Van Renterghem B Matthys D Craen R Bourgois J Vrijens J Beunen G Malina RM 《Journal of sports sciences》2006,24(3):221-230
Longitudinal changes in height, weight and physical performance were studied in 33 Flemish male youth soccer players from the Ghent Youth Soccer Project. The players' ages at the start of the study ranged from 10.4 to 13.7 years, with a mean age of 12.2 +/- 0.7 years. Longitudinal changes were studied over a 5 year period. Peak height velocity and peak weight velocity were determined using non-smoothed polynomials. The estimations of peak height velocity, peak weight velocity and age at peak height velocity were 9.7 +/- 1.5 cm x year-1, 8.4 +/- 3.0 kg x year-1 and 13.8 +/- 0.8 years, respectively. Peak weight velocity occurred, on average, at the same age as peak height velocity. Balance, speed of limb movement, trunk strength, upper-body muscular endurance, explosive strength, running speed and agility, cardiorespiratory endurance and anaerobic capacity showed peak development at peak height velocity. A plateau in the velocity curves was observed after peak height velocity for upper-body muscular endurance, explosive strength and running speed. Flexibility exhibited peak development during the tear after peak height velocity. Trainers and coaches should be aware of the individual characteristics of the adolescent growth spurt and the training load should also be individualized at this time. 相似文献
79.
Miller LE Pierson LM Nickols-Richardson SM Wootten DF Selmon SE Ramp WK Herbert WG 《Research quarterly for exercise and sport》2006,77(1):58-63
This study assessed muscular torque and rate of torque development following concentric (CON) or eccentric (ECC) isokinetic training. Thirty-eight women were randomly assigned to either CON or ECC training groups. Training consisted of knee extension and flexion of the nondominant leg three times per week for 20 weeks (SD = 1). Eccentric training increased ECC knee extension and flexion peak torque more than CON training. The ECC group improved acceleration time and time to peak torque with ECC movements versus the CON group. Slow-velocity ECC isokinetic training yielded greater ECC and similar CON torque development gains versus CON training over the course of 20 weeks in young women. 相似文献
80.