全文获取类型
收费全文 | 517篇 |
免费 | 47篇 |
国内免费 | 149篇 |
专业分类
713篇 |
出版年
2024年 | 1篇 |
2023年 | 10篇 |
2022年 | 15篇 |
2021年 | 16篇 |
2020年 | 23篇 |
2019年 | 12篇 |
2018年 | 25篇 |
2017年 | 22篇 |
2016年 | 18篇 |
2015年 | 13篇 |
2014年 | 18篇 |
2013年 | 42篇 |
2012年 | 33篇 |
2011年 | 35篇 |
2010年 | 32篇 |
2009年 | 41篇 |
2008年 | 40篇 |
2007年 | 65篇 |
2006年 | 70篇 |
2005年 | 35篇 |
2004年 | 27篇 |
2003年 | 24篇 |
2002年 | 13篇 |
2001年 | 15篇 |
2000年 | 8篇 |
1999年 | 10篇 |
1998年 | 8篇 |
1997年 | 6篇 |
1996年 | 8篇 |
1995年 | 4篇 |
1994年 | 4篇 |
1993年 | 4篇 |
1992年 | 1篇 |
1991年 | 3篇 |
1989年 | 2篇 |
1986年 | 1篇 |
1985年 | 1篇 |
1983年 | 1篇 |
1982年 | 2篇 |
1981年 | 2篇 |
1980年 | 1篇 |
1979年 | 1篇 |
1966年 | 1篇 |
排序方式: 共有713条查询结果,搜索用时 0 毫秒
221.
Zhou-Jia Xi Yuichi Yoshida Nobuyuki Yoshimura Kohsaku Ushioda Hiroshi Noguchi 《Philosophical Magazine Letters》2015,95(7):384-391
The effects of cementite morphology on short-fatigue-crack propagation were investigated by subjecting smooth steel specimens to rotating-bending fatigue tests. Intergranular and transgranular cementite precipitation steels free of other phases were prepared through heat treatments. In the intergranular cementite precipitation steel, short-fatigue-crack propagation was decelerated at the grain boundaries, and accelerated in the grain interiors. In contrast, the transgranular precipitation steel showed the deceleration of the crack propagation in the grain interiors but not in the vicinity of the grain boundaries. 相似文献
222.
223.
诸多研究显示母亲积极教养能够促进青少年亲社会行为的发展, 但是迄今对其内在作用机制尚不清楚。本研究基于“基因-环境-内表型-行为”模型, 采用问卷法和DNA分型技术, 对1082名青少年(初测年龄为12.32 ± 0.48岁, 50.3%女生)及其母亲进行为期2年的追踪研究, 考察共情在母亲积极教养与青少年亲社会行为间的中介作用, 以及OXTR基因rs53576多态性对该中介机制的调节作用。结果发现:(1)青少年认知共情(观点采择)在母亲积极教养和亲社会行为之间起中介作用, 而情绪共情(移情关心)的中介作用不显著; (2) OXTR基因对积极教养与亲社会行为间直接路径的调节作用不显著; (3) OXTR基因能够调节“母亲积极教养-认知共情-亲社会行为”中介机制的前半路径, 并且显现出一种超显性的基因效应。在携带GG和AA基因型的青少年中, 母亲积极教养显著正向预测认知共情, 进而增加了其亲社会行为, 而在携带AG杂合子基因型的青少年中, 这一中介效应则不显著。研究结果有助于从催产素受体基因多态性、共情能力和家庭教养等方面阐明青少年亲社会行为的发生机制及个体差异。 相似文献
224.
225.
Human Studies - The transition from “natural” sensation to “phenomenological” perception is revealed since the dynamic temporality within perception is elaborated by... 相似文献
226.
本研究采用面孔情绪探测任务, 通过状态-特质焦虑问卷筛选出高、低特质性焦虑被试, 考察场景对不同情绪效价以及不同情绪强度的面部表情加工的影响, 并探讨特质性焦虑在其中所发挥的作用。结果发现:(1)对于不同情绪效价的面部表情, 场景对其情绪探测的影响存在差异:对于快乐面部表情, 在100%、80%和20%三个情绪层级上, 在场景与面孔情绪性一致情况下, 被试对面孔情绪探测的正确率显著高于不一致情况; 对于恐惧面部表情, 在80%、60%、40%和20%四个情绪层级上, 均发现一致条件比不一致条件有着更高的情绪探测正确率。(2)对于高特质性焦虑组, 一致条件和不一致条件中的面孔情绪探测正确率并没有显著差异, 即高特质性焦虑组并未表现出显著的场景效应; 而低特质性焦虑组则差异显著, 即出现显著的场景效应。该研究结果表明:(1)对于情绪强度较低的面部表情, 快乐与恐惧面孔情绪探测都更容易受到场景的影响。(2)相比于中等强度快乐面孔, 场景更容易影响中等强度恐惧面孔情绪的探测。(3)特质性焦虑的个体因素在场景对面孔情绪探测的影响中发挥调节作用, 高特质性焦虑者在情绪识别中较少受到场景信息的影响。 相似文献
227.
228.
The Cognitive Social Network in Dreams: Transitivity,Assortativity, and Giant Component Proportion Are Monotonic 下载免费PDF全文
Hye Joo Han Richard Schweickert Zhuangzhuang Xi Charles Viau‐Quesnel 《Cognitive Science》2016,40(3):671-696
For five individuals, a social network was constructed from a series of his or her dreams. Three important network measures were calculated for each network: transitivity, assortativity, and giant component proportion. These were monotonically related; over the five networks as transitivity increased, assortativity increased and giant component proportion decreased. The relations indicate that characters appear in dreams systematically. Systematicity likely arises from the dreamer's memory of people and their relations, which is from the dreamer's cognitive social network. But the dream social network is not a copy of the cognitive social network. Waking life social networks tend to have positive assortativity; that is, people tend to be connected to others with similar connectivity. Instead, in our sample of dream social networks assortativity is more often negative or near 0, as in online social networks. We show that if characters appear via a random walk, negative assortativity can result, particularly if the random walk is biased as suggested by remote associations. 相似文献
229.
230.
Joan Peskin Julie Comay Xi Chen Carly Prusky 《Journal of cognition and development》2016,17(3):396-417
A critical skill in emergent writing is the developing ability to take the perspective of different readers; however, the precursors of this skill have not yet been identified. In this longitudinal study, 105 children (90 after attrition) were tested at 3 time points: pre-kindergarten (3–4 years old, n = 105), kindergarten (5 years old, n = 97), and Grade 1 (6–7 years old, n = 90). Theory of mind (ToM) in pre-kindergarten significantly predicted children’s awareness of a reader’s epistemic state when they dictated letters in both kindergarten and Grade 1 even after controlling for language (Peabody Picture Vocabulary Task [PPVT]) and inhibitory control. In addition, ToM in pre-kindergarten remained a significant predictor of reader awareness in Grade 1 after further controlling for reader awareness in kindergarten. There was little relationship between higher-order ToM tasks in kindergarten and reader awareness, but higher-order ToM in Grade 1 concurrently predicted reader awareness. Receptive vocabulary (PPVT) was significantly related to reader awareness at all time points, longitudinally and concurrently. This study has both theoretical implications for the relationship between ToM and emergent literacy and practical implications for the early identification and remediation of children at risk for later writing difficulties. 相似文献