全文获取类型
收费全文 | 5496篇 |
免费 | 103篇 |
国内免费 | 330篇 |
专业分类
5929篇 |
出版年
2023年 | 13篇 |
2022年 | 33篇 |
2021年 | 32篇 |
2020年 | 48篇 |
2019年 | 33篇 |
2018年 | 157篇 |
2017年 | 149篇 |
2016年 | 240篇 |
2015年 | 121篇 |
2014年 | 76篇 |
2013年 | 153篇 |
2012年 | 323篇 |
2011年 | 329篇 |
2010年 | 73篇 |
2009年 | 75篇 |
2008年 | 107篇 |
2007年 | 111篇 |
2006年 | 136篇 |
2005年 | 1378篇 |
2004年 | 708篇 |
2003年 | 488篇 |
2002年 | 170篇 |
2001年 | 54篇 |
2000年 | 30篇 |
1999年 | 44篇 |
1998年 | 18篇 |
1997年 | 19篇 |
1996年 | 13篇 |
1994年 | 21篇 |
1992年 | 37篇 |
1991年 | 52篇 |
1990年 | 66篇 |
1989年 | 51篇 |
1988年 | 28篇 |
1987年 | 44篇 |
1986年 | 43篇 |
1985年 | 34篇 |
1984年 | 33篇 |
1983年 | 25篇 |
1979年 | 33篇 |
1975年 | 29篇 |
1974年 | 32篇 |
1973年 | 32篇 |
1972年 | 25篇 |
1971年 | 26篇 |
1970年 | 17篇 |
1969年 | 20篇 |
1968年 | 17篇 |
1967年 | 17篇 |
1966年 | 17篇 |
排序方式: 共有5929条查询结果,搜索用时 15 毫秒
931.
Yung-Jong?ShiahEmail author Frances?Chang Shih-Kuang?Chiang I-Mei?Lin Wai-Cheong?Carl?Tam 《Journal of religion and health》2015,54(1):35-45
We examined the association among anxiety, religiosity, meaning of life and mental health in a nonclinical sample from a Chinese society. Four hundred fifty-one Taiwanese adults (150 males and 300 females) ranging in age from 17 to 73 years (M = 28.9, SD = 11.53) completed measures of Beck Anxiety Inventory, Medical Outcomes Study Health Survey, Perceived Stress Scale, Social Support Scale, and Personal Religiosity Scale (measuring religiosity and meaning of life). Meaning of life has a significant negative correlation with anxiety and a significant positive correlation with mental health and religiosity; however, religiosity does not correlate significantly anxiety and mental health after controlling for demographic measures, social support and physical health. Anxiety explains unique variance in mental health above meaning of life. Meaning of life was found to partially mediate the relationship between anxiety and mental health. These findings suggest that benefits of meaning of life for mental health can be at least partially accounted for by the effects of underlying anxiety. 相似文献
932.
This study looked at the extent to which personality and cultural factors predicted participants’ perceptions of the importance private interactions played in the workplace. The 134 participants read a vignette (where a new employee socially interacted at low or high levels with co-workers) and completed the Big Five Inventory, Social Axioms Survey, and questions concerning expected workplace experiences. Results indicated employees who engaged in high levels of private interaction with co-workers were expected to be better liked, to receive better performance evaluations, were more likely to receive co-worker assistance, and were thought to be more likely chosen for future projects. However, the personality and social axiom variables studied did not significantly interact with social interaction to influence expectations of workplace outcomes. 相似文献
933.
934.
隆乳术不仅可以重塑女性的形体美,而且可以增强女性的自信心,在当前具有广阔的市场。纵观隆乳术的发展演变史,从最初的注射隆乳术到自体组织隆乳术,再到当前的假体隆乳术和自体脂肪移植隆乳术,经历了“实践、认识、再实践、再认识”的多次反复。各种隆乳方式各具特色,其间既有成功的经验,又有失败的教训。针对隆乳术安全性的改进推动了隆乳术的不断向前发展。寻找一种安全有效的隆乳方式和理想的隆乳材料成为当前隆乳术发展的关键和整形外科医师关注的重点。 相似文献
935.
以往研究大多考察默读中是否存在副中央凹预视效应及存在何种类型的预视效应,很少有研究探讨出声阅读中的副中央凹预视效应以及阅读中预视信息提取的时间进程。本研究采用边界范式,通过两个眼动实验考察默读和出声阅读中的副中央凹预视效应及预视信息提取的时间进程。实验1发现在默读和出声阅读中都存在副中央凹预视效应,但是默读中副中央凹预视效应更大。实验2发现出声阅读中在注视中央凹词汇的早期不能提取副中央凹处信息。两个实验的结果表明默读和出声阅读条件下的副中央凹加工是不同的,需要用不同的眼动模型解释。 相似文献
936.
937.
938.
939.
信息保持、短时存贮与执行控制的脑模型 总被引:8,自引:0,他引:8
工作记忆的脑机制是认知神经科学研究的重要问题。研究者在分析大量脑成像研究数据的基础上,创建了许多解释工作记忆神经基础的模型。Smith和Jonides发展了工作记忆成分结构模型和贮存与执行加工分离模型。Postle和D’Esposito建构了工作记忆相对表征混合模型,D’Esposito, Postle和Rypma阐述了工作记忆加工阶段动态模型。Fletcher和Henson提出工作记忆额叶分区整合理论。该文通过对上述模型或理论的评价,总结了工作记忆脑成像研究中存在的问题,展望了该研究领域的发展趋势。 相似文献
940.
By regarding the latent random vectors as hypothetical missing data and based on the conditional expectation of the complete-data
log-likelihood function in the EM algorithm, we investigate assessment of local influence of various perturbation schemes
in a nonlinear structural equation model. The basic building blocks of local influence analysis are computed via observations
of the latent variables generated by the Metropolis-Hastings algorithm, while the diagnostic measures are obtained via the
conformal normal curvature. Seven perturbation schemes, including some perturbation schemes on latent vectors, are investigated.
The proposed procedure is illustrated by a simulation study and a real example.
Acknowledgment: This research is fully supported by a grant (CUHK 4243/02H) from the Research Grant Council of the Hong Kong
Special Administration Region. The authors are indebted to ICPSR and the relevant funding agency for allowing use of their
data, and to the Editor and reviewers for their valuable comments for improving the paper. 相似文献