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   8198篇
  免费   107篇
  国内免费   1篇
  8306篇
  2024年   79篇
  2023年   97篇
  2022年   119篇
  2021年   148篇
  2020年   198篇
  2019年   212篇
  2018年   394篇
  2017年   375篇
  2016年   347篇
  2015年   210篇
  2014年   248篇
  2013年   1099篇
  2012年   558篇
  2011年   541篇
  2010年   338篇
  2009年   242篇
  2008年   441篇
  2007年   375篇
  2006年   335篇
  2005年   297篇
  2004年   188篇
  2003年   187篇
  2002年   193篇
  2001年   80篇
  2000年   113篇
  1999年   85篇
  1998年   50篇
  1997年   43篇
  1996年   48篇
  1995年   33篇
  1994年   46篇
  1993年   27篇
  1992年   45篇
  1991年   41篇
  1990年   33篇
  1989年   40篇
  1988年   33篇
  1987年   26篇
  1986年   16篇
  1985年   22篇
  1984年   29篇
  1983年   16篇
  1982年   15篇
  1981年   15篇
  1979年   19篇
  1978年   13篇
  1976年   17篇
  1974年   18篇
  1973年   14篇
  1968年   14篇
排序方式: 共有8306条查询结果,搜索用时 0 毫秒
921.
    
The current work scenario is pervaded by widespread perceptions of job insecurity, which is one of the main stress factors for workers and their well-being. This article aims to investigate the link between these perceptions and a most inner dimension, that is, people's tendency to self-objectify (i.e., self-viewing as objects rather than fully human beings). Furthermore, we aim to verify the role of this self-objectifying process in explaining the well-established relation between perceived job insecurity and well-being. Across four studies and a single-article meta-analysis (total N = 684), we show that perceived job insecurity is consistently linked with self-objectification. Furthermore, this objectifying self-perception is associated with decreased well-being and plays a mediational role in the link between perceived job insecurity and this latter variable.  相似文献   
922.
    
Curiosity predicts memory performance and it is influenced by prior knowledge. Reading a well-organized text can increase curiosity in a classroom setting, however it is not clear if reading a short text written in an encyclopedic style can increase curiosity and learning without explicit educational goals. We presented participants with a short text and examined if questions related to this reading could elicit higher curiosity ratings and better recall in a thematized version of the trivia task. In the first experiment, participants subjectively judged their prior knowledge of trivia questions. The curiosity of the participants was not influenced by the reading, but the memory effect of curiosity was amplified for the questions related to it. In the second experiment, we objectively verified whether the participants knew the answers. The curiosity ratings were higher for the questions related to the reading, but only the curiosity ratings influenced recall performance. These results show that prior knowledge induced by reading can have an effect on curiosity and learning, but it depends on how this knowledge is assessed by the learner.  相似文献   
923.
924.
    
The development of the unique, hierarchical, and endless combinatorial capacity in a human language requires neural maturation and learning through childhood. Compared with most non-human primates, where combinatorial capacity seems limited, chimpanzees present a complex vocal system comprising hundreds of vocal sequences. We investigated how such a complex vocal system develops and the processes involved. We recorded 10,929 vocal utterances of 98 wild chimpanzees aged 0–55 years, from Taï National Park, Ivory Coast. We developed customized Generalized non-Linear Models to estimate the ontogenetic trajectory of four structural components of vocal complexity: utterance length, diversity, probability of panting (requiring phonation across inhalation and exhalation), and probability of producing two adjacent panted units. We found chimpanzees need 10 years to reach adult levels of vocal complexity. In three variables, the steepest increase coincided with the age of first non-kin social interactions (2–5 years), and plateaued in sub-adults (8–10 years), as individuals integrate into adult social life. Producing two adjacent panted units may require more neuromuscular coordination of the articulators, as its emergence and steepest increase appear later in development. These results suggest prolonged maturational processes beyond those hitherto thought likely in species that do not learn their vocal repertoire. Our results suggest that multifaceted ontogenetic processes drive increases in vocal structural complexity in chimpanzees, particularly increases in social complexity and neuro-muscular maturation. As humans live in a complex social world, empirical support for the “social complexity hypothesis” may have relevance for theories of language evolution.

Research Highlights

  • Chimpanzees need around 10 years to develop the vocal structural complexity present in the adult repertoire, way beyond the age of emergence of every single vocal unit.
  • Multifaceted ontogenetic processes may drive increases in vocal structural complexity in chimpanzees, particularly increases in social complexity and neuro-muscular maturation.
  • Non-linear increases in vocal complexity coincide with social developmental milestones.
  • Vocal sequences requiring rapid articulatory change emerge later than other vocal sequences, suggesting neuro-muscular maturational processes continue through the juvenile years.
  相似文献   
925.
    
Animal Cognition - Quantitative abilities are well described in many species and in diverse life situations, including in the adult domestic cat. However, such abilities have been much less studied...  相似文献   
926.
    
Animal Cognition - Inhibitory control, the inhibition of impulsive behaviours, is believed to be key in navigating a complex social environment. Species characterised by higher social tolerance,...  相似文献   
927.
    
Animal Cognition - Learning by observing others (i.e. social learning) is an important mechanism to reduce the costs of individual learning. Social learning can occur between conspecifics but also...  相似文献   
928.
    
The increasing use of digital technology-based retail services provides new opportunities for digital marketing. In this paper, we investigate how augmented reality (AR) technology can be leveraged as part of the firm's strategy. We explore the online purchase intention through AR smart glasses (ARSG), considering consumers' value assessment through a cost–benefit analysis and the influence of technical, experiential and social AR value drivers. We develop an augmented value-based adoption model addressing four main objectives: (1) Evaluate the effect of the perceived value of ARSG, (2) Evaluate the effect of immersion (experiential dimension), (3) Evaluate the effect of AR devices and technical complexity (technical dimension) and (4) Evaluate the importance of subjective norms (social dimension) on the online purchase intention through AR technology. Based on an ESIC Tech Lab experiment with two types of ARSG from market leaders and AR retail apps, the study uses survey data from 253 participants. The results suggest that the technical dimension has an ambiguous effect, with tech-complexity enhancing directly the perceived value of ARSG for online purchase while reducing the net value of consumers' economic cost–benefit analysis. We find strong evidence that the experiential and social AR dimensions (in the form of immersion and subjective norm) have a significant positive influence on consumers' purchase intention online, which are better predictors than the pure economic cost–benefit assessment (through usefulness and difficulty). Furthermore, the technical innovativeness of consumers is found to increase directly the online purchase intention through ARSG.  相似文献   
929.
930.
    
The first goal of this longitudinal study was to examine the strength and direction of the relations between post-separation parental conflict (PSPC) and father–child physical contact, as reported by the mother, at the time of separation (Time 1) and in the following 2 years (Time 2). A cross-lagged panel model was conducted with a sample of 198 parents of children from 3 to 8 years old at the time of separation. The results indicated that PSPC at Time 1 predicted a lower frequency of father–child physical contact at Time 2, whereas the inverse relationship was not found. The strength and direction of the relations did not vary as a function of the level of the moderators. The results help us to identify priority targets in the development of policies and treatment programs for separated families.  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