全文获取类型
收费全文 | 54358篇 |
免费 | 1306篇 |
国内免费 | 24篇 |
出版年
2020年 | 412篇 |
2019年 | 458篇 |
2018年 | 3931篇 |
2017年 | 3325篇 |
2016年 | 2812篇 |
2015年 | 663篇 |
2014年 | 700篇 |
2013年 | 3162篇 |
2012年 | 1689篇 |
2011年 | 3494篇 |
2010年 | 3132篇 |
2009年 | 2150篇 |
2008年 | 2663篇 |
2007年 | 3102篇 |
2006年 | 1060篇 |
2005年 | 1134篇 |
2004年 | 1048篇 |
2003年 | 974篇 |
2002年 | 964篇 |
2001年 | 987篇 |
2000年 | 1004篇 |
1999年 | 771篇 |
1998年 | 459篇 |
1997年 | 428篇 |
1996年 | 383篇 |
1994年 | 344篇 |
1993年 | 344篇 |
1992年 | 579篇 |
1991年 | 549篇 |
1990年 | 578篇 |
1989年 | 529篇 |
1988年 | 476篇 |
1987年 | 507篇 |
1986年 | 522篇 |
1985年 | 569篇 |
1984年 | 481篇 |
1983年 | 429篇 |
1982年 | 358篇 |
1981年 | 347篇 |
1979年 | 488篇 |
1978年 | 395篇 |
1977年 | 349篇 |
1975年 | 429篇 |
1974年 | 466篇 |
1973年 | 434篇 |
1972年 | 383篇 |
1969年 | 360篇 |
1968年 | 387篇 |
1967年 | 345篇 |
1966年 | 348篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
931.
932.
933.
Thomas G. Fikes Roberta L. Klatzky James Pellegrino Chick Hebert Larry Murdoch 《Behavior research methods》1990,22(3):290-296
In this paper, we describe an apparatus for measuring reaction times and movement times involved in reaching for real objects. Subjects view an object through a liquid crystal window, which serves as a shutter that can be made clear or opaque quickly (10 msec from opaque to clear, 30 msec from clear to opaque). The subject’s hand rests on a microswitch-equipped home key, and the object sits on a force-sensitive platform so that initiation of reach and time of contact with the object can be marked accurately. The apparatus interfaces with an IBM PC/AT through a digital I/O parallel port, so that reaction times and movement times are recorded automatically. 相似文献
934.
Tachistoscopic presentation of stimuli on IBM PC-compatible computers is limited by a number of factors, including video retrace rates, screen scrolling, and the shape and density of picture elements. A method is presented for overcoming these difficulties through the use of enhanced graphic adapters or video graphic arrays. A C-language program demonstrates (1) synchronous scroll-free displays achieved by writing alternating images to “hidden” pages of video memory, (2) alternative techniques for erasing images, and (3) use of an empirically derived aspect ratio to produce symmetrical figures. 相似文献
935.
Abstract— Subjects' judgments of the mean of 12 scores were influenced by the way in which the scores were dichotomized. The estimated mean was higher when the three highest scores formed one group (e.g., payments for women) and the nine lowest formed the other (e.g., payments for men) than when the nine highest were one group and the three lowest the other. We call this phenomenon the Will Rogers Illusion (WRI). The WRI occurred only when estimates of the subgroup means were made prior to the estimates of the mean of the whole group. When the latter mean was judged first, the WRI was reversed. These and other data indicate that the means of subgroups can influence judgments of group means, a finding that is relevant to research on social stereotypes. 相似文献
936.
937.
David Herbert 《Islam & Christian-Muslim Relations》1993,4(2):257-267
This paper offers a Quaker perspective on the issues raised for British society by the Satanic Verses controversy. It is argued that the Quaker rejection of coercive power is founded upon the story of Jesus Christ. The origins of Quaker attitudes to free speech are located in seventeenth‐century Puritanism, arguing that Quakers share with Western secular defenders of free speech an internalization of the blasphemy taboo which issues in intolerance of anything held sacred. Furthermore, free speech rhetoric tends to ignore the power relations which sustain free speech in particular contexts. This is a neglect which, coupled with a secularized theory of race relations that ignores religious factors, renders its protagonists incapable of addressing anti‐Islamic prejudice, a phenomenon illustrated from press coverage of the controversy. The implications of this argument for British society and Quakers in particular are then considered. It is argued that an extension of legislation covering incitement to racial hatred to religion is the most appropriate legal response, but the greatest need is educational. Quakers and other Christian groups need to develop their own theological response to avoid passively replicating the dominant view in society. 相似文献
938.
Increases in self-attention as a function of decreases in the relative size of one’s subgroup in a heterogeneous group context
have been shown to result in increased regulation of behavior toward social (normative) standards for behavior. The present
study demonstrated increased regulation of behavior toward a personal standard for behavior as a function of variations in
group composition. One hundred twenty-five subjects individually completed the Creativity subscale of Scott’s Personal Value
Scale assessing attitudes toward originality. They then completed a word-association task in groups ranging in size from 2
to 8. Originality of word-associations was determined by reference to previously established word-association norms and norms
based on frequency of responses given in the present study. Results indicate that originality in responses increase as the
relative size of one’s own subgroup decreases (indexing increases in self-attention) for subjects who value originality. Discussion
centers on the distinction between experimentally manipulated public and private self-attention and standards that are adopted
for behavioral self-regulation.
Portions of this study were presented at the annual meeting of the Eastern Psychological Association, New York, April 1991. 相似文献
939.
This study investigated the psychological and physical health status of 265 crew members on two U.S. Navy ships (a guided
missile cruiser and a frigate on convoy escort duty for tankers under U.S. flag) during the Persian Gulf conflict at four
time periods during combat-ready operations on a single day. Findings suggest that adaptation occurs to extreme stressors
associated with sustained operations. Suggestions are made relative to measures that may minimize psychological and physical
conditions that adversely affect performance under conditions of heavy stress.
Report No. 89-18, supported by the Naval Medical Research and Development Command, Bethesda MD, Department of the Navy, under
research Work Unit No. 63206N.M0096. The opinions expressed in this paper are those of the author and do not reflect the official
policy or position of the Department of the Navy, Department of Defense, nor the U.S. Government. 相似文献
940.
David Lester 《Current Psychology》1993,12(4):312-325
The views of a variety of theorists who have proposed that the mind may be usefully conceptualized as made up of a set of
subselves are reviewed, and several principles are proposed for a possible systems theory of personality. 相似文献