全文获取类型
收费全文 | 2911篇 |
免费 | 369篇 |
国内免费 | 707篇 |
专业分类
3987篇 |
出版年
2024年 | 12篇 |
2023年 | 52篇 |
2022年 | 89篇 |
2021年 | 99篇 |
2020年 | 135篇 |
2019年 | 104篇 |
2018年 | 144篇 |
2017年 | 138篇 |
2016年 | 135篇 |
2015年 | 106篇 |
2014年 | 115篇 |
2013年 | 235篇 |
2012年 | 187篇 |
2011年 | 255篇 |
2010年 | 221篇 |
2009年 | 206篇 |
2008年 | 239篇 |
2007年 | 310篇 |
2006年 | 316篇 |
2005年 | 225篇 |
2004年 | 145篇 |
2003年 | 93篇 |
2002年 | 80篇 |
2001年 | 41篇 |
2000年 | 45篇 |
1999年 | 39篇 |
1998年 | 25篇 |
1997年 | 24篇 |
1996年 | 17篇 |
1995年 | 21篇 |
1994年 | 17篇 |
1993年 | 15篇 |
1992年 | 14篇 |
1991年 | 3篇 |
1990年 | 18篇 |
1989年 | 12篇 |
1988年 | 8篇 |
1987年 | 8篇 |
1986年 | 1篇 |
1985年 | 11篇 |
1984年 | 2篇 |
1983年 | 2篇 |
1982年 | 9篇 |
1981年 | 4篇 |
1980年 | 4篇 |
1979年 | 5篇 |
1974年 | 1篇 |
排序方式: 共有3987条查询结果,搜索用时 15 毫秒
91.
92.
H. Y. Wu Y. H. Chen P. F. Yin Z. R. Zhang X. Y. Han X. Y. Li 《Philosophical Magazine Letters》2019,99(1):29-38
The effects of pressure on the mechanical and dynamical stability of NaAlSi have been fully investigated by first-principles calculations within the generalised gradient approximation (GGA). The obtained results show that the optimised lattice constants, atomic positions and elastic constants at ambient pressure are in good agreement with the available experimental and theoretical data. The lattice constants decrease monotonically with increasing pressure. The elastic constant C11, C12, C13, C33 and C66 increase while C44 decreases with increasing pressure. It is found that NaAlSi is mechanically unstable when the pressure is above 25.97?GPa. The phonon-dispersion curves along several high symmetry lines are obtained. The phonon frequencies at the Z point decrease with increasing pressure and completely soften to zero at 27.52?GPa, further confirming the structural instability of NaAlSi. 相似文献
93.
Kenneth T. Wang Austin M. Johnson Yanmei Cao Li Zhang Allison Parsley 《Journal of Beliefs & Values》2019,40(1):104-121
The Attitudes Toward Religion Scale (ATRS) was developed to access the level of interest in and position toward the five state-approved religions in China. Data were analysed across two samples of Chinese college students. With Sample 1 (N = 278), exploratory factor analyses were used to select the 10 ATRS items corresponding to two factors: Interest and Position. With Sample 2, confirmatory factor analyses (N = 270) cross-validated the two-factor oblique model as well as a bifactor model. Cronbach alphas of ATRS subscale scores in the two samples ranged from .75 to .85. ATRS-Interest and Position were both positively associated with number of close relationships with religious people. In addition, negative attitudes toward religion was associated with being religiously proselytised by strangers. Moreover, female students reported more favourable attitudes toward religion compared to their male counterparts. The overall results support ATRS as a psychometrically strong and promising measure. 相似文献
94.
通过对经典四卡问题呈现方式的改进,逐一呈现与命题对应的检验证据,要求被试判断每一证据在命题检验中的作用。结果表明:(1)"证真偏向"依然存在,但从正确率来看,顺证真与顺证伪没有显著差异;(2)发现了显著的顺序效应,与逆向检验相比,顺向检验有更高的正确率与更短的反应时;(3)被试加工与命题"无关联"刺激时存在明显困难,其正确率显著较低。这些结果说明个体在判断不同证据对命题检验的作用时会受到命题内在方向性的影响,个体可能会采用一些固有推理图式以及简单的匹配策略解决问题。 相似文献
95.
为了克服网络虚拟性的影响,网络商铺往往通过提升网站临场感以弥补购物体验不足的问题。那么,网站临场感是否会对女性消费者这一细分群体产生影响呢?本研究从网站临场感的视角出发,以女大学生为研究对象、服装网站为实验材料,采用实验法研究了网站临场感对女性网络购买意愿的影响及其发生机制。研究发现:网站临场感对女性网络购买意愿具有显著的正向影响;网站临场感可以通过风险感知和沉醉感的中介作用对女性网络购买意愿产生影响,且该中介作用包含了三条路径,即风险感知的中介作用、沉醉感的中介作用以及风险感知和沉醉感的链式中介作用。 相似文献
96.
本文以118名企业员工为被试,以自编实验材料和量表为研究工具,探讨组织不公平与反生产行为之间的关系,并考察了权力距离对组织不公平与反生产行为关系的调节作用。结果发现:当被试面对组织不公平情境时,倾向于实施反生产行为;组织不公平情境下,低权力距离组被试在反生产行为得分上显著高于高权力距离组个体,而在中性情境下,两组被试得分差异不显著,即权力距离在组织不公平与反生产行为之间起负向调节作用。由于反生产行为的产生常与组织不公平相关,因此本研究结果将有助于我们更好地理解反生产行为产生的原因,并从心理学角度帮助组织管理者制定减少反生产行为发生的措施。 相似文献
97.
98.
采用内隐联想测验和问卷法探讨高中生内隐、外显成就动机与学业拖延的关系。结果表明:(1)内隐、外显成就动机是相互独立的动机系统,但两者以显著的交互作用共同影响学业拖延;(2)不同动机组合的学生,拖延情况有显著差异:高内隐、高外显组的拖延最少,高内隐、低外显组的拖延最多;(3)动机越不一致,拖延越严重,动机一致性能够减少拖延;(4)成绩中等偏下的学生在学习过程的补救和总结上有更多的拖延。因此,学生只有具备了高内隐、高外显的一致性动机,才会出现最少的拖延。 相似文献
99.
100.
Aruna Wu Xiao-Wen Li Lihua Zhou Qian Zhang 《Integrative psychological & behavioral science》2017,51(3):477-495
A sequel to the previous article “Roots of Excellence: The Releasing Effect of Individual Potentials through Educational Cultural Intervention in a Chinese School” (in press), the present study is on the unexpected reversal phenomena in the process of cultural intervention. The goal of the intervention is to construct the dynamics of Jiti (well-organized collective in Chinese) through creative activities to promote students’ development. In the intervention, the releasing effect (Wu et al. 2016) emerged as well, but the teacher’s concern about worsening discipline and academic performance evoked and reinforced his habitual notions and practices of education, turning the joint activities into a way of strengthening discipline. The energy that had been discharging at the beginning of the intervention was inhibited, so that many more problematic behaviors took shape. The whole class formed an inhibitory atmosphere, within which pupils formed self-defensive regulation strategies. By comparing with the productive collective in which intervention was effective and analyzing this unexpected reversal process, we can not only see pupils’ self-construction status in the inhibitory culture but illuminate the formation of the teacher’s resistance to educational and cultural transformation as well. Resistance is originated from teachers not being able to interpret pupils’ inner developmental needs but instead anxious about the ongoing problems. 相似文献