全文获取类型
收费全文 | 13079篇 |
免费 | 171篇 |
国内免费 | 28篇 |
专业分类
教育 | 8931篇 |
科学研究 | 1654篇 |
各国文化 | 79篇 |
体育 | 958篇 |
综合类 | 9篇 |
文化理论 | 86篇 |
信息传播 | 1561篇 |
出版年
2022年 | 91篇 |
2021年 | 142篇 |
2020年 | 215篇 |
2019年 | 289篇 |
2018年 | 437篇 |
2017年 | 456篇 |
2016年 | 407篇 |
2015年 | 265篇 |
2014年 | 413篇 |
2013年 | 2125篇 |
2012年 | 323篇 |
2011年 | 357篇 |
2010年 | 309篇 |
2009年 | 278篇 |
2008年 | 325篇 |
2007年 | 306篇 |
2006年 | 258篇 |
2005年 | 215篇 |
2004年 | 250篇 |
2003年 | 194篇 |
2002年 | 190篇 |
2001年 | 283篇 |
2000年 | 307篇 |
1999年 | 259篇 |
1998年 | 159篇 |
1997年 | 179篇 |
1996年 | 166篇 |
1995年 | 113篇 |
1994年 | 139篇 |
1993年 | 100篇 |
1992年 | 226篇 |
1991年 | 186篇 |
1990年 | 169篇 |
1989年 | 200篇 |
1988年 | 192篇 |
1987年 | 158篇 |
1986年 | 177篇 |
1985年 | 173篇 |
1984年 | 133篇 |
1983年 | 156篇 |
1982年 | 112篇 |
1981年 | 111篇 |
1980年 | 94篇 |
1979年 | 156篇 |
1978年 | 115篇 |
1977年 | 102篇 |
1976年 | 96篇 |
1975年 | 77篇 |
1974年 | 89篇 |
1973年 | 89篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
71.
Veronika Karnowski Larissa Leonhard Anna Sophie Kümpel 《Communication Research Reports》2018,35(2):91-100
Social media have become an integral part of online news use, affecting how individuals find, consume, and share news. By applying the Theory of Reasoned Action (TRA), this study investigates the effects of motives, attitude, and intention on news-sharing behavior among German social media users (n = 333). Findings show that news-sharing attitude and subjective norms have a positive effect on news-sharing intention, which in turn has a positive effect on actual news-sharing behavior. Taken together, we see that a new media behavior in the early phases of its societal diffusion—like social media news sharing in Germany in 2015—can mainly be explained by a rational choice logic and is rooted in the motives of socializing and information seeking. This finding thus reflects the double nature of social media as a means for both information retrieval and social grooming. 相似文献
72.
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
73.
74.
75.
76.
77.
K. C. Soh 《Psychology in the schools》1973,10(3):316-320
78.
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.
Efthimiadou A Asimakopoulos B Nikolettos N Giatromanolaki A Sivridis E Lialiaris TS Papachristou DN Kontoleon E 《Journal of sports sciences》2006,24(8):849-854
Although angiogenetic therapy using recombinant growth factors holds much hope for the treatment of ischaemic diseases, there are still many unanswered questions, including the method of administration, the correct dose of these factors, and the duration of the therapeutic approach. Exercise has also been suggested to induce neovascularizaiton in muscles. We evaluated the angiogenetic effects of the intramuscular administration of basic-fibroblast growth factor (b-FGF) and acidic-fibroblast growth factor (a-FGF) in rat heart, compared with rats who exercised daily. In conclusion, both the intramuscular administration of b-FGF and exercise increased significantly angiogenesis in the heart in contrast to the intramuscular administration of a-FGF, which was ineffective. 相似文献