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   3879篇
  免费   1445篇
  国内免费   140篇
  2024年   1篇
  2023年   22篇
  2022年   21篇
  2021年   109篇
  2020年   121篇
  2019年   391篇
  2018年   292篇
  2017年   410篇
  2016年   394篇
  2015年   355篇
  2014年   327篇
  2013年   575篇
  2012年   298篇
  2011年   239篇
  2010年   275篇
  2009年   260篇
  2008年   221篇
  2007年   179篇
  2006年   153篇
  2005年   156篇
  2004年   113篇
  2003年   114篇
  2002年   111篇
  2001年   89篇
  2000年   77篇
  1999年   43篇
  1998年   13篇
  1997年   14篇
  1996年   8篇
  1995年   7篇
  1994年   9篇
  1993年   6篇
  1992年   8篇
  1991年   7篇
  1990年   3篇
  1989年   5篇
  1988年   1篇
  1987年   3篇
  1986年   7篇
  1985年   5篇
  1984年   8篇
  1982年   1篇
  1981年   4篇
  1980年   4篇
  1979年   4篇
  1975年   1篇
排序方式: 共有5464条查询结果,搜索用时 15 毫秒
81.
When up and down stimuli are mapped to left and right keypresses or "left" and "right" vocalizations in a 2-choice reaction task, performance is often better with the up-right/down-left mapping than with the opposite mapping. J. J. Adam, B. Boon, F. G. W. C. Paas, and C. Umiltà (1998) presented evidence that the up-right/down-left advantage is obtained when trials are participant paced but not when they are computer paced. In all, 3 experiments are reported that show no difference in magnitude of the up-right/down-left advantage between computer-paced and participant-paced conditions. The advantage was eliminated, however, in Experiment 3 when a response deadline was imposed. Response speed, rather than participant or computer pacing of trials, is crucial.  相似文献   
82.
When up and down stimuli are mapped to left and right keypresses or "left" and "right" vocalizations in a 2-choice reaction task, performance is often better with the up-right/down-left mapping than with the opposite mapping. This study investigated whether performance is influenced by the type of initiating action. In all, 4 experiments showed the up-right/down-left advantage to be reduced when the participant's initiating action was a left response compared with when it was a right response. This reduction occurred when the initiating action and response were both keypresses, both were spoken location names, and one was a spoken location name and the other a keypress. The results are consistent with the view that the up-right/down-left advantage is due to asymmetry in coding the alternatives on each dimension, and a distinction between categorical and coordinate spatial codes seems to provide the best explanation of the advantage.  相似文献   
83.
依据Rayleigh颜色匹配方法研制人眼颜色视觉定量测量实验装置,并对20名色觉正常和30名色觉异常大学生的颜色视觉进行测量。结果表明,色觉异常被试在Rayleigh匹配中点和匹配范围测量值上均与色觉正常被试者存在明显的差异。  相似文献   
84.
85.
分析中国伪生命科学产生的文化原因和背景,指出其致命的谎言、骗术与危害;揭露其理论上的荒谬与科学上的无知。并强调开展对这类伪科学产品进行批判运动的意义;同时重新对科学、非科学、伪科学、宗教、神话、迷信等进行划界和定义。医学研究需要正义、需要哲学的引导;在事实的世界之上,必须由价值和意义的世界来把握;医学理论不允许任意杜撰和加工,从这个意义上,医学科学还需要法律来维护其正义  相似文献   
86.
As the religious diversity of English towns and cities has grown over the past thirty years due to the establishment in some places of sizeable communities of Hindus, Muslims and Sikhs, as well as other faiths, there have been important changes to local public religion. Traditional civic ceremonies, such as Remembrance Sunday, as well as new forms of civic celebration and commemoration, are now increasingly taking account of the diversity of faiths represented in Britain. This paper examines the consequences of religious diversity for English civic religion by looking at some of the traditions of civic ceremonies in England and at the way in which they have been transformed by the changing religious landscape of towns and cities. The paper also explores some of the dilemmas and questions that have emerged both for the Church of England as well as for the other faith communities when it comes to the design and delivery of civic ceremonies.  相似文献   
87.
In this paper, I introduce and examine the notion of “mathematical engineering” and its impact on mathematical change. Mathematical engineering is an important part of contemporary mathematics and it roughly consists of the “construction” and development of various machines, probes and instruments used in numerous mathematical fields. As an example of such constructions, I briefly present the basic steps and properties of homology theory. I then try to show that this aspect of contemporary mathematics has important consequences on our conception of mathematical knowledge, in particular mathematical growth.  相似文献   
88.
89.
90.
Negotiators more distanced from the negotiated goal more often exhibit integrative behavior, which maximizes both their individual and joint outcomes. Based on the assumption of an analogy between interpersonal negotiations and internal dialogs simulating social relationships, an experiment was carried out. It aimed to verify if psychological distance (proximal vs. distant perspective on the situation enacted in an internal dialog) affects the processes of integration and confrontation and, consequently, increases the frequency of integrative dialogs. Data from 115 participants (56 women) were analyzed. An increase in psychological distance was found to reduce the intensity of the confrontation process and to cause an increase in the number of integrative internal dialogs.  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