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   25770篇
  免费   936篇
  国内免费   9篇
  2018年   352篇
  2017年   388篇
  2016年   389篇
  2015年   275篇
  2014年   353篇
  2013年   1873篇
  2012年   613篇
  2011年   676篇
  2010年   448篇
  2009年   415篇
  2008年   648篇
  2007年   582篇
  2006年   555篇
  2005年   485篇
  2004年   498篇
  2003年   485篇
  2002年   501篇
  2001年   661篇
  2000年   668篇
  1999年   538篇
  1998年   279篇
  1997年   295篇
  1996年   285篇
  1995年   279篇
  1992年   505篇
  1991年   471篇
  1990年   461篇
  1989年   426篇
  1988年   446篇
  1987年   414篇
  1986年   458篇
  1985年   435篇
  1984年   387篇
  1983年   341篇
  1982年   256篇
  1981年   272篇
  1979年   409篇
  1978年   335篇
  1977年   292篇
  1976年   302篇
  1975年   349篇
  1974年   448篇
  1973年   469篇
  1972年   349篇
  1971年   371篇
  1970年   343篇
  1969年   370篇
  1968年   445篇
  1967年   399篇
  1966年   420篇
排序方式: 共有10000条查询结果,搜索用时 7 毫秒
991.
Seven experiments explored the time course of recognition of brief novel melodies. In a continuous-running-memory task, subjects recognized melodic transpositions following delays up to 2.0 min. The delays were either empty or filled with other melodies. Test items included exact transpositions (T), same-contour lures (SC) with altered pitch intervals, and different-contour lures (DC). DCs differed from Ts in the pattern of ups and downs of pitch. With this design, we assessed subjects’ discrimination of detailed changes in pitch intervals (T/SC discrimination) as well as their discrimination of contour changes (T/DC). We used both artificial and “real” melodies. Artificial melodies differed in conformity to a musical key, being tonal or atonal. After empty delays, T/DC discrimination was superior to T/SC discrimination. Surprisingly, after filled delays, T/SC discrimination was superior to T/DC. When only filled delays were tested, T/SC discrimination did not decline over the longest delays. T/DC performance declined more than did T/SC performance across both empty and filled delays. Tonality was an important factor only for T/SC discrimination after filled delays. T/DC performance was better with rhythmically intact folk melodies than with artificial isochronous melodies. Although T/SC performance improved over filled delays, it did not overtake T/DC performance. These results suggest that (1) contour and pitch-interval information make different contributions to recognition, with contour dominating performance after brief empty delays and pitch intervals dominating after longer filled delays; (2) a coherent tonality facilitates the encoding of pitch-interval patterns of melodies; and (3) the rich melodic—rhythmic contours of real melodies facilitate T/DC discrimination. These results are discussed in terms of automatic and controlled processing of melodic information.  相似文献   
992.
A technique is described for rapidly collecting responses in auditory-localization experiments. Subjects indicate the perceived direction of the sound by pointing at a 20-cm-diam spherical model. In Experiment 1, the subjects judged the direction of a broadband signal, which could originate from any of 239 directions ranging through 360° of azimuth and between ?45° and +90° of elevation. Using this technique, the subjects responded 2–8 times more rapidly than previous subjects who used either a verbal-reporting technique or a head-pointing technique. Localization judgments were as accurate as they had been with verbal reports, but were not as accurate as judgments collected using the head-pointing technique. In Experiment 2, the signal was turned off and the experimenter read the spherical coordinates of the signal location to the subjects. The subjects pointed to these coordinates more accurately than they had judged the direction of the sounds in Experiment 1, suggesting that the response technique had not been the limiting factor in that experiment. Circumstances relevant to the choice of response techniques for auditory-localization experiments are discussed.  相似文献   
993.
A hardware and software interface system from International Data and Acquisition and Control, Inc. (IDAC) is reviewed. The IDAC system comes with spreadsheet software compatible for either Macintosh or IBM microcomputers. I prefer to use the IDAC hardware with my own software written in TrueBasic and spreadsheet macros. The entire system is easy to use and is currently in use for our undergraduate Learning Laboratory.  相似文献   
994.
The purpose of the present study was to compare the oculomotor behavior of readers scanning meaningful and meaningless materials. Four conditions were used—a normal-text-reading control condition, and three experimental conditions in which the amount of linguistic processing was reduced, either by presenting the subjects with repeated letter strings or by asking the subjects to search for a target letter in texts or letter strings. The results show that global eye-movement characteristics (such as saccade size and fixation duration), as well as local characteristics (such as word-skipping rate, landing site, refixation probability, and refixation position), are very similar in the four conditions. The finding that the eyes are capable of generating an autonomous oculomotor scanning strategy in the absence of any linguistic information to process argues in favor of the idea that such predetermined oculomotor strategies might be an important determinant of eye movements in reading.  相似文献   
995.
In training and in supervision, counselors learn to be cognizant of personal values (e.g., spirituality, religiosity), yet they are enjoined to except them from practice. This article examines the nature of therapist spiritual and religious values and the impact of these values on the practice of psychotherapy. A goal of effective treatment should be the integration of therapist spiritual and religious values with therapist epistemic values in order to accommodate the spiritual and religious needs of both client and counselor. Counselor spiritual and religious values can contribute to therapy, even when the therapist is engaged in a dialectic involving personal and epistemic values.  相似文献   
996.
In the domain of pattern recognition, experiments have shown that perceivers integrate multiple sources of information in an optimal manner. In contrast, other research has been interpreted to mean that decision making is nonoptimal. As an example, Tversky and Kahneman (1983) have shown that subjects commit a conjunction fallacy because they judge it more likely that a fictitious person named Linda is a bank teller and a feminist than just a bank teller. This judgment supposedly violates probability theory, because the probability of two events can never be greater than the probability of either event alone. The present research tests the hypothesis that subjects interpret this judgment task as a pattern recognition task. If this hypothesis is correct, subjects’ judgments should be described accurately by the fuzzy logical model of perception (FLMP)—a successful model of pattern recognition. In the first experiment, the Linda task was extended to an expanded factorial design with five vocations and five avocations. The probability ratings were described well by the FLMP and described poorly by a simple probability model. The second experiment included (1) two fictitious people, Linda and Joan, as response alternatives and (2) both ratings and categorization judgments. Although the ratings were accurately described by both the FLMP and an averaging of the sources of information, the categorization judgments were described better by the FLMP. These results reveal important similarities in recognizing patterns and in decision making. Given that the FLMP is an optimal method for combining multiple sources of information, the probability judgments appear to be optimal in the same manner as pattern-recognition judgments.  相似文献   
997.
DECONSTRUCTING THE MYTH OF THE NONAGGRESSIVE WOMAN   总被引:1,自引:0,他引:1  
One of the most pervasive and undisputed gender stereotypes is that men are more aggressive than women. However, this stereotype has, until recently, led researchers to conclude that women are nonaggressive and, therefore, to ignore the topic of female aggression as a distinct phenomenon. The basis of the myth, factors supporting its maintenance, and theories of female aggression are examined. A feminist reinterpretation of aggression that views women's and men's aggressive behavior within social structural arrangements that create and sustain differential power relations is presented.  相似文献   
998.
James W. Garson 《Synthese》1994,100(2):291-305
Fodor and Pylyshyn (1988) argue that any successful model of cognition must use classical architecture; it must depend upon rule-based processing sensitive to constituent structure. This claim is central to their defense of classical AI against the recent enthusiasm for connectionism. Connectionist nets, they contend, may serve as theories of the implementation of cognition, but never as proper theories of psychology. Connectionist models are doomed to describing the brain at the wrong level, leaving the classical view to account for the mind.This paper considers whether recent results in connectionist research weigh against Fodor and Pylyshyn's thesis. The investigation will force us to develop criteria for determining exactly when a net is capable of systematic processing. Fodor and Pylyshyn clearly intend their thesis to affect the course of research in psychology. I will argue that when systematicity is defined in a way that makes the thesis relevant in this way, the thesis is challenged by recent progress in connectionism.  相似文献   
999.
JOB SEARCH BEHAVIOR OF EMPLOYED MANAGERS   总被引:3,自引:0,他引:3  
Job search typically has been thought of as an antecedent to voluntary turnover or job choice. This study extends existing literature by proposing a model of the job search process and examining the search behavior of 1,388 employed managers. Managers were surveyed about their job search and voluntary turnover activities. Survey data were matched with job, organizational, and personal information contained in the data base of a large executive search firm. Results suggest that job satisfaction, compensation, and perceptions of organizational success were negatively related to job search, while desire for more work-family balance and ambition exhibited positive relations with search. Perceptions of greener pastures did not have much effect on job search among this group. Results also indicated that although some job search activity does facilitate turnover, a considerable amount of search does not lead to turnover. Thus, it appears that search serves many purposes.  相似文献   
1000.
Qualitative reviews of the withdrawal literature have reached inconsistent conclusions regarding the strength of the relationship between promotion and turnover. Several issues were addressed in this study which may account for these inconsistencies. First, we differentiate among three distinct operationalizations of promotion: (1) promotion satisfaction; (2) perceptions of promotional opportunity; and (3) actual promotion. We then conduct quantitative reviews using meta-analytic procedures on turnover and the three operationalizations of promotion. We found no significant relationships between promotion satisfaction and turnoveror between perceived promotional opportunities and turnover. However, a significant negative relationship was found between actual promotion and turnover. Theoretical implication of these findings are presented.  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