全文获取类型
| 收费全文 | 1121篇 |
| 免费 | 263篇 |
| 国内免费 | 88篇 |
专业分类
| 1472篇 |
出版年
| 2024年 | 21篇 |
| 2023年 | 36篇 |
| 2022年 | 39篇 |
| 2021年 | 41篇 |
| 2020年 | 77篇 |
| 2019年 | 49篇 |
| 2018年 | 63篇 |
| 2017年 | 40篇 |
| 2016年 | 47篇 |
| 2015年 | 35篇 |
| 2014年 | 55篇 |
| 2013年 | 83篇 |
| 2012年 | 68篇 |
| 2011年 | 94篇 |
| 2010年 | 83篇 |
| 2009年 | 60篇 |
| 2008年 | 84篇 |
| 2007年 | 96篇 |
| 2006年 | 95篇 |
| 2005年 | 81篇 |
| 2004年 | 55篇 |
| 2003年 | 30篇 |
| 2002年 | 19篇 |
| 2001年 | 11篇 |
| 2000年 | 12篇 |
| 1999年 | 14篇 |
| 1998年 | 5篇 |
| 1997年 | 5篇 |
| 1996年 | 9篇 |
| 1995年 | 4篇 |
| 1994年 | 3篇 |
| 1993年 | 4篇 |
| 1992年 | 3篇 |
| 1991年 | 4篇 |
| 1990年 | 4篇 |
| 1989年 | 8篇 |
| 1988年 | 5篇 |
| 1987年 | 2篇 |
| 1986年 | 5篇 |
| 1985年 | 4篇 |
| 1984年 | 4篇 |
| 1983年 | 3篇 |
| 1982年 | 5篇 |
| 1981年 | 1篇 |
| 1980年 | 5篇 |
| 1979年 | 1篇 |
排序方式： 共有1472条查询结果，搜索用时 15 毫秒
991.
Qian Zhao Haoyang Chen Hongyan Yan Yan He Li Zhu WenTing Fu 《Psychology, health & medicine》2018,23(7):779-787
This study aimed (i) to complement existing research by focusing on body image disturbance issues in Chinese Systemic Lupus Erythematosus (SLE) patients; (ii) to investigate how Chinese patients make sense of disease diagnosis and perceived cultural influences within the context of their SLE. A total of 118 SLE patients underwent standardized laboratory examinations and completed several questionnaires. Independent sample t-test, Mann–Whitney U-test, Chi-square test, and multivariate analysis using backward stepwise logistic regression model were used to analyze these data. We found 18.3% SLE patients had BID, which were significantly higher than the control group (.8%). SLE patients are more concerned about their physical changes caused by disease. There were significant correlations among personal health insurance, complication of diabetes, appearance of new rash, depression, anxiety, self-esteem and BID in patients with SLE. Meanwhile, logistic regression analysis revealed that appearance of new rash and high anxiety were significantly associated with BID in SLE patients. In conclusion, it is beneficial to pay attention to the physical and mental health of patients with rheumatic disease from the perspective of body image, to understand their needs and to provide effective and effective service for them. 相似文献
992.
ＤＮＡ、ＲＮＡ和蛋白质是组成生物体的重要的生物大分子,但关于何者是生命的起源,至今众说纷纭。近来的研究表明,ＲＮＡ可能是生命的起源。本文简述了有关此学说的一些主要证据,并就其中的一些问题进行了讨论。 相似文献
993.
J. X. Zhao 《Philosophical Magazine Letters》2016,96(1):35-43
Qualitative and quantitative models were proposed to understand the shear band (SB) interaction scenario found in the compressive tests on specimen with two symmetrical semi-circular notches. The so-called ‘work-hardening’ behavior could be ascribed as the stress interaction which was caused by stress fields around the SB tips. Besides, the SB bending was observed along propagation orientation. The quantitative analysis based on traditional shear deformation mechanism could reasonably account for how the SB was bent. It is anticipated that the present work could provide a pathway to understand the deep SB deformation mechanism of metallic glass. 相似文献
994.
Effects of explicit instructions, metacognition, and intrinsic motivation on creative homework performance were examined in 303 Chinese 10th-grade students. Models that represent hypothesized relations among these constructs and trait covariates were tested using structural equation modelling. Explicit instructions geared to originality were positively related to originality of homework, but not to fluency/flexibility of homework. Participants with high intrinsic motivation for creative work scored higher on originality as well as fluency/flexibility of homework, whereas intrinsic motivation for challenging work had an inverse effect on creative homework. Theoretical claims on the relation between explicit instructions and metacognitive activities and between the latter and creative performance were not supported by this study. The degree of explicitness of instructions and the nature of the tasks were discussed in relation to the findings on the effect of explicit instructions. Further, the difference of creative process involved in the production of original versus fluent/flexible creative performance and the difference in the two types of intrinsic motivation and their effects on creative performance were discussed based on various studies including brain activities. Implications of the findings for the Chinese education system were discussed. 相似文献
995.
Annett Schirmer Christy Reece Claris Zhao Erik Ng Esther Wu Shih‐Cheng Yen 《British journal of psychology (London, England : 1953)》2015,106(1):107-132
Casual social touch influences emotional perceptions, attitudes, and behaviours of interaction partners. We asked whether these influences extend to third‐party observers. To this end, we developed the Social Touch Picture Set comprising line drawings of dyadic interactions, half of which entailed publicly acceptable casual touch and half of which served as no‐touch controls. In Experiment 1, participants provided basic image norms by rating how frequently they observed a displayed touch gesture in everyday life and how comfortable they were observing it. Results implied that some touch gestures were observed more frequently and with greater comfort than others (e.g., handshake vs. hug). All gestures, however, obtained rating scores suitable for inclusion in Experiments 2 and 3. In Experiment 2, participants rated perceived valence, arousal, and likeability of randomly presented touch and no‐touch images without being explicitly informed about touch. Image characters seemed more positive, aroused, and likeable when they touched as compared to when they did not touch. Image characters seemed more negative and aroused, but were equally likeable, when they received touch as compared to when there was no physical contact. In Experiment 3, participants passively viewed touch and no‐touch images while their eye movements were recorded. Differential gazing at touch as compared to no‐touch images emerged within the first 500 ms following image exposure and was largely restricted to the characters' upper body. Gazing at the touching body parts (e.g., hands) was minimal and largely unaffected by touch, suggesting that touch processing occurred outside the focus of visual attention. Together, these findings establish touch as an important visual cue and provide novel insights into how this cue modulates socio‐emotional processing in third‐party observers. 相似文献
996.
Xiaoshan Li Mingjie Zhou Na Zhao Shanshan Zhang Jianxin Zhang 《International journal of psychology》2015,50(3):223-231
The relationship between a leader's personality and his team's performance has been established in organisational research, but the underlying process and mechanism responsible for this effect have not been fully explored. Both the traditional multiple linear regression and the multilevel structural equation model approaches were used in this study to test a proposed mediating model of subordinates' perception of collective efficacy between leader personality and team performance. The results show that the team leader's extraversion and conscientiousness personality traits were related positively to both the team‐average (individual) perception of collective efficacy and team performance, and the collective efficacy mediated the relationship of the leader's personality traits and team performance. This study also discusses how Chinese cultural elements play a role in such a mediating model. 相似文献
997.
Recent studies have suggested that the endowment effect may actually be a type of self‐referent cognitive bias due to the mere ownership of an object. However, it is not adequately understood how the ownership of an object affects the endowment effect. The current research is the first to explore if the endowment effect could be extended to different ownerships. The results suggest that the endowment effect extends to goods owned by their mothers, romantic partners and close friends, but not acquaintances. Furthermore, the level of intimacy between individuals and mothers/romantic partners/close friends/acquaintances mediates the relationship between the effect of ownership and the extensibility of the endowment effect. These findings are consistent with the mere ownership effect that ownership increases valuation by enhancing the salience of the self. 相似文献
998.
The central hypothesis of Semantic Network Model of Creativity is that creative people, who are exposed to more information that are both novel and useful, will have more interconnections between event schemas in their associations. The networks of event schemas in creative people’s minds were expected to be wider and denser than those in less creative people’s minds. Based on this theory, data from Chinese online social media, also known as “Weibo microblogging,” were analyzed. Each user’s score consisted of the metric of coverage, which represented the spread of the network, as well as the metric of density, which represented the interconnections among nodes in the network. The results showed that occupations had a significant effect on people’s creativity score. Academic scholars and writers in general had higher scores compared to other groups, such as entertainment celebrities and sport stars. The implications and limitations of this method of quantifying people’s creativity were discussed. 相似文献
999.
ABSTRACTA direct chill (DC) cast Al-15% Si alloy was processed by hot rolling with a single pass at a temperature of 520°C with a thickness reduction of 80%. Scanning electron microscopy (SEM), electron backscattering diffraction (EBSD) and transmission electron microscopy (TEM) were used to investigate the evolution of the sample’s microstructure. After hot rolling, silicon particles homogeneously distributed in the Al matrix with fine equiaxed grains of average size ～ 0.95?μm. High-angle boundaries (HABs) (about ～75.8% in percentage) dominate in the Al matrix structure. There is evidence for Si-particle-stimulated continuous dynamic recrystallization (CDRX) during hot rolling. 相似文献
1000.
ABSTRACTThe propagation of shear horizontal (SH) surface waves in piezoelectric semi-infinite bodies is investigated theoretically. The surface stress exerting on the boundary is taken into account through surface piezoelectricity theory, and the velocity ranges and existence conditions of such surface waves for both electrically open and shorted cases are derived in detail. Analysis results show that the SH surface waves occurring with surface stress are dispersive in contrast to the classical situation, and the propagation characteristics strongly depend on the relative value of surface elasticity, surface piezoelectricity and surface density. 相似文献