首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   16915篇
  免费   1354篇
  国内免费   969篇
  19238篇
  2024年   28篇
  2023年   254篇
  2022年   237篇
  2021年   270篇
  2020年   553篇
  2019年   578篇
  2018年   550篇
  2017年   650篇
  2016年   664篇
  2015年   420篇
  2014年   569篇
  2013年   1776篇
  2012年   350篇
  2011年   446篇
  2010年   372篇
  2009年   570篇
  2008年   758篇
  2007年   799篇
  2006年   751篇
  2005年   635篇
  2004年   548篇
  2003年   454篇
  2002年   424篇
  2001年   260篇
  2000年   250篇
  1999年   213篇
  1998年   172篇
  1997年   142篇
  1996年   120篇
  1995年   108篇
  1994年   98篇
  1993年   82篇
  1992年   61篇
  1991年   45篇
  1990年   48篇
  1988年   39篇
  1987年   26篇
  1985年   375篇
  1984年   424篇
  1983年   353篇
  1982年   461篇
  1981年   448篇
  1980年   450篇
  1979年   405篇
  1978年   452篇
  1977年   353篇
  1976年   355篇
  1975年   274篇
  1974年   282篇
  1973年   239篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
991.
Magicians have developed powerful tools to covertly force a spectator to choose a specific card. We investigate the physical location force, in which four cards (from left to right: 1-2-3-4) are placed face-down on the table in a line, after which participants are asked to push out one card. The force is thought to rely on a behavioural bias in that people are more likely to choose the third card from their left. Participants felt that their choice was extremely free, yet 60% selected the 3rd card. There was no significant difference in estimates and feelings of freedom between those who chose the target card (i.e. 3rd card) and those who selected a different card, and they underestimated the actual proportion of people who selected the target card. These results illustrate that participants’ behaviour was heavily biased towards choosing the third card, but were oblivious to this bias.  相似文献   
992.
In two successive experiments using the divided visual field paradigm with vertical or horizontal division, two ambiguous figures, the Rubin’s vase-face or the Necker cube, were projected to the right and left or to the upper and lower visual hemifields of 108 healthy volunteers. Stimulation time was 120 s. The main hypotheses were (a) that different percepts of the same ambiguous figure may be simultaneously experienced in the two hemifields and (b) that the type (vertical vs. horizontal) of visual field division influences the reversal frequency and the temporal interdependence of the percepts.Results from the first experiment showed that the temporal interdependence of reversals was very low for both ambiguous figures, suggesting that during part of the stimulation time the subjects could experience different percepts of the same figure (e.g. a vase in the right and face profiles in the left visual hemifields). The second experiment showed that this perceptual dissociation occurred on average during one third of the stimulation time. In both experiments the type of visual field division did not influence either frequency or temporal interdependence of the reversals. When one single ambiguous figure was presented in the centre of the screen, the number of reversals was approximately the sum of the reversals observed with two figures presented simultaneously each in one hemifield.  相似文献   
993.
In the “Libet experiment” the onset of movement-related brain activity preceded the reported time of the conscious intention to move, suggesting that conscious intention may not play a role in initiating voluntary movements (Libet, Gleason, Wright, & Pearl, 1983). Dominik et al. (2017) provided evidence that the intention reports employed in the Libet experiment, which Libet et al. (1983) found to precede movement reports, are invalid. In the study by Dominik et al., intention reports preceded movement reports only when participants had prior experience making movement reports. Individuals without such experience reported intention around the same time as movement. These findings suggest that Libet’s intention reports do not reflect experiences of intention, but, rather, inferences based on prior experience with movement reports. Our study replicated the core findings of Dominik et al. We argue that Libet’s intention reports are invalid and explore the phenomenology of intention in the Libet experiment.  相似文献   
994.
IntroductionTeachers are the most likely people to intervene in bullying situations in primary schools. An effective and inexpensive way to measure the quality of their interventions during these incidents is the hypothetical scenario. However, there is no such validated measurement tool available in French.ObjectiveThe study objective was therefore to translate, adapt, and validate The Bullying Attitude Questionnaire among francophone primary school teachers.MethodThe participants were 37 female primary school teachers who completed the adapted version of The Bullying Attitude Questionnaire, translated in French by bilingual experts, as well as other scales used as external criteria.ResultsThe translated and adapted version of The Bullying Attitude Questionnaire showed good concurrent validity. Moreover, previous study conclusions using the same measurement tool were replicated in this study.ConclusionHypothetical scenarios represent a convenient way to measure the quality of teacher's interventions in bullying situations. In line with previous studies, teachers tend to perceive relational aggression as less severe than physical and verbal aggression. In such situations, they are less empathetic toward the victims, less upset with the perpetrator, and less likely to intervene.  相似文献   
995.
《Médecine & Droit》2020,2020(160):1-5
While the Conseil d’État once again confirmed the legality of the medical decision to stop treatment of Vincent Lambert, the Cour de Cassation held that the French State is not required to suspend the execution of the said decision pending the opinion of the Committee on the Rights of Persons with Disabilities, a United Nations’ body. Nevertheless, the High jurisdiction does not directly pronounce itself on the question of the binding force of the provisions of the Convention on the Rights of Persons with Disabilities and its additional protocol, nor on the scope of these texts.  相似文献   
996.
This special issue presents the theory of sociocultural models (TSCM) and its applications in diverse areas of psychology, including education, health care, clinical practice, gender relations, and general research. As many theories already exist in the social sciences, some readers may ask: “Why do cross‐cultural, cultural, and indigenous psychologists need another theory?” This question is comprised of two aspects: culture/cultural and theory/theoretical. Therefore, to answer it, it is important to clarify both issues. The first relates to cultural and its relation to psychological. The second, theory, considers its relation to cultural and psychological. These issues have long‐range implications for all culture and psychology disciplines as they pose many questions: What role does culture play in the mental functioning of people? How is culture constituted? Is cultural related to social? Does people’s mental functioning exert reciprocal influences on their cultural and social functioning? While working toward answering these questions, researchers quickly determine that more questions arise: What role should theories play in answering these questions? What constitutes theory in culture and psychology disciplines? How should such a theory (or such theories) address the triad of cultural, social, and mental? Consequently, in an effort to provide an overview of the TSCM and to begin to answer these questions, this introduction consists of two parts. The first part addresses the sociocultural turn in modern psychology; this part discusses its implications for research in culture and psychology disciplines. The second segment examines the topic of the theoretical backgrounds of cultural and cross‐cultural research and connects the philosophical paradigms of interpretivism and realism with the theory of sociocultural models. This introduction concludes with a brief overview of the articles included in this issue.  相似文献   
997.
Commercial motorcycle drivers are recognised to take high risks while driving, but little is known about their perception of these risks. This paper presents the results of a survey of 400 commercial motorcyclists' perception of unsafe driving behaviours and then determine the association between the perception of unsafe driving behaviour and reported driving behaviour. The study was carried out in Dar es Salaam between December 8th 2018 and March 24th 2019. Drivers aged 18 years and above were selected from 90 parking stages within the city and completed a structured interview. Modified Poisson regression was used to estimate the prevalence ratios (PRs). We found that close to 60% of drivers considered unsafe driving to be unsafe. However, reported unsafe driving behaviour was moderately common. Our results showed that reported unsafe driving behaviour (adjusted PR = 1.7; 95% CI 1.3–2.2) was associated with a low perception of the dangers of unsafe driving among motorcyclists. The higher the earnings a driver had (adjusted PR = 1.6; 95% CI 1.2–2.0), the higher the likelihood of having a low perceived risk of unsafe behaviour. These findings suggest that commercial motorcyclists' unsafe behaviour are, for the most part, not the result of a poor perception of the involved risks.  相似文献   
998.
Regarding evaluation, numerous researches highlighted the social valuation of the internality. From the end of 1990s, the diversification of the studied situations came to put in perspective the impact of this norm, while revealing the existence of others social norms. The present research was designed to investigate the phenomenon of social valuation of the deference in situation of annual performance review. The social valuation of the power of others was examined by two studies: one led from paradigm of autopresentation with employees and other one, conducted under legislator paradigm with Human Resources specialists (students in their final year of Institutes Business Administration). If the results indicate, in a classic way, important normative effects of the internality, the valuation of the deferential explanations is globally so obvious. These results question about the contextual expression of a norm of deference: employees and RH experts give weight to the power of others. The results show a convergent use of the internality and the power of others.  相似文献   
999.
A better understanding of what walking entails is important in sustainable transportation planning. Recent research has shown that perceptions have a higher power to explain the quality of service (QoS) than objective measures have; the latter being typically used in the pedestrian level of service methodologies. Despite the existing research on perceptions and QoS in other transportation fields, very little information has been found in the literature that can explain a clear cognitive structure that defines the pedestrian QoS. In this research, we propose a cognitive map to make it possible to understand and explain pedestrian sidewalk QoS of a given infrastructure when walking, based on perceptions. We gathered the perceptions of 1056 pedestrians on-site, regarding the attributes (indicators) identified in the literature review in 30 locations in Bogotá, Colombia. Based on an Exploratory Factor Analysis, we developed a conceptual model through Structural Equation Modeling. We found that seven latent variables (LVs) (i.e., Sidewalk characteristics, Externalities, Surrounding, Discomfort, Bike hassles, Protection, and Amenities) interrelate to each other, forming a pedestrian cognitive map. QoS is directly explained by how pedestrians perceive the LVs sidewalk characteristics and surrounding and indirectly by the rest of LVs. The cognitive map shows three LVs related to the interaction between pedestrians and other transportation modes (i.e., externalities, discomfort, and bike hassles) that impact the perceived QoS negatively, and four LVs related to the interaction between pedestrians and different elements of the sidewalk (i.e., sidewalk characteristics, surrounding, amenities, and protection) that impact the perceived QoS positively. To understand pedestrian perceptions when walking and the path that these perceptions follow to develop a QoS perception provides an accurate tool by which to improve the QoS from the useŕs perspective, generating a new opportunity to provide better pedestrian facilities.  相似文献   
1000.
工作反刍指在没有要求其出现的情境下, 有意识的、重复发生的工作方面的相关想法, 分为工作相关情感反刍与工作相关问题解决沉思两个维度。工作反刍对个体健康、工作及幸福感的影响有“双刃剑”效应。持续性认知理论、压力认知激活模型与认知资源视角理论, 可以解释该效应的内在机制。未来研究应分析影响双刃剑效应的边界条件, 寻求减少消极效应、增加积极效应的途径, 拓展其双刃剑效应心理机制的分析视角和该效应的作用层面。  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号