全文获取类型
收费全文 | 23450篇 |
免费 | 485篇 |
国内免费 | 4篇 |
专业分类
23939篇 |
出版年
2020年 | 292篇 |
2019年 | 279篇 |
2018年 | 462篇 |
2017年 | 402篇 |
2016年 | 430篇 |
2015年 | 276篇 |
2014年 | 397篇 |
2013年 | 1723篇 |
2012年 | 679篇 |
2011年 | 743篇 |
2010年 | 404篇 |
2009年 | 493篇 |
2008年 | 637篇 |
2007年 | 648篇 |
2006年 | 576篇 |
2005年 | 505篇 |
2004年 | 490篇 |
2003年 | 484篇 |
2002年 | 447篇 |
2001年 | 815篇 |
2000年 | 807篇 |
1999年 | 595篇 |
1998年 | 250篇 |
1997年 | 240篇 |
1996年 | 207篇 |
1992年 | 497篇 |
1991年 | 438篇 |
1990年 | 497篇 |
1989年 | 414篇 |
1988年 | 396篇 |
1987年 | 367篇 |
1986年 | 394篇 |
1985年 | 448篇 |
1984年 | 348篇 |
1983年 | 294篇 |
1982年 | 230篇 |
1979年 | 333篇 |
1978年 | 264篇 |
1977年 | 211篇 |
1976年 | 207篇 |
1975年 | 306篇 |
1974年 | 353篇 |
1973年 | 354篇 |
1972年 | 276篇 |
1971年 | 245篇 |
1970年 | 211篇 |
1969年 | 231篇 |
1968年 | 292篇 |
1967年 | 252篇 |
1966年 | 277篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
241.
Critical Flicker Fusion Thresholds (CFFTs) were measured in 644 elderly people identified from community-based general practice
records, and the relationship of CFFT with age was investigated. The CFFT was measured using the method of limits with mean
scores for three ascending (flicker/fusion) and three descending (fusion/flicker) presentations being recorded. The difference
between the ascending and descending means was found to be significantly correlated with age (r=−0.131,P<0.001) and may reflect a reduced sensitivity of the Central Nervous System to suprathreshold flicker with increasing age.
The results suggest that CFFT measurement has an important role to play in gerontological research as an objective measure
of cognitive aspects of the ageing process. 相似文献
242.
Consecutive counsellor trainee and client statements from 12 audiotaped assessment interviews were coded to operationalize empathy as a sequential variable. For each two statement sequence the speaking order (counsellor to client, client to counsellor) was also coded, and the resultant matrix analyzed via loglinear statistical procedures for categorical data. For the speaking order client to counsellor, three empathy sequences (empathy enhancing, empathy diverging, empathy commencing) were found to be significantly related to counselling effectiveness. For the speaking order counsellor to client, only one sequence(empathy diverging) was found to be significantly related to counselling effectiveness. Implications for counsellor training and future research are discussed. 相似文献
243.
INNATENESS, EXPERIENCE, AND MUSIC PERCEPTION 总被引:2,自引:0,他引:2
244.
Geula Lowenberg Benjamin H. Lowenberg Daniel P. Dowhower 《Journal of business and psychology》1990,4(3):343-356
The present research investigates the relationships between demographic characteristics and employees' perceptions of appropriate pay-differentials (APD's). In order to investigate this relationship, we examined organizations in two different countries with different social philosophies. The dependent variable (APD's) is defined as what is felt and/or perceived by the individual to be the appropriate pay-differentials among positions with different responsibilities and at different organizational levels. Two different subject groups were used: 137 salaried employees from an automotive engineering company in the U.S.A., and 107 salaried employees from an engineering company in Sweden. Questionnaires constructed in English and Swedish included: (1) questions about individual demographics; (2) job factors; and (3) perception of appropriate pay-differentials using eight organizational charts. Results indicated that the influence of social philosophy, as expressed by organizational socialization processes, was limited in scope. Individual differences associated with employees' perceptions of appropriate pay-differentials should be taken into account when determining pay and compensation policies. These considerations may encourage employee participation in decision making and lead to better organizational outcomes.deceased. 相似文献
245.
K. Blokker S. Bruin J. Bryden I. Houseman C. Okkerse C. Van der Meer A. P. Verkaik 《Knowledge, Technology, and Policy》1990,3(3):76-83
In this article the perspective shifts to the “upstream” end of the agricultural knowledge and information system (AKIS).
Because knowledge policy and strategic decision-making are not the prerogative of the public sector, organizations such as
cooperative unions and multinational companies are included. After considering the influence of the changing environment on
the nature of the AKIS, the role of knowledge management and policy in the emerging knowledge and information market is examined.
Special attention is given to public and private R&D. The article then looks where information technology (IT) fits in and
what considerations determine strategic investment in IT projects and sustained services. Some of the European experiences
with this strategic investment are evaluated. 相似文献
246.
Bradford P. Keeney PhD 《Contemporary Family Therapy》1990,12(4):271-277
This article offers an invitation to develop one's own unique clinical style, relying less on institutionalized schools of therapy and more on the therapist's own natural resources. An emphasis is placed upon understanding therapy as art, trusting one's imagination, and maintaining a healthy irreverence for professional politics. 相似文献
247.
An automated system for measuring intracranial self-stimulation behavior is described. The system consists of two Commodore 6502 microcomputers interfaced with a constant-current generator and a standard operant chamber. The system hardware allows sine- and square-wave stimulation. Stimulus intensity can be varied in 256 steps between 0 and 100, 0 and 500, or 0 and 1,000 /µA. The system programs, which are written in machine language, allow the control of various schedules of reinforcement, the counting of operant responses and reinforcements, the measurement of interresponse intervals, and the storage of the data on disk. The software is designed for the determination of the threshold of reinforcement, on the basis of the titration of postreinforcement pauses caused by changeover in schedule control between concurrent continuous reinforcement and fixed ratio schedules. 相似文献
248.
OPTIMISM AND FUNDAMENTALISM 总被引:2,自引:0,他引:2
249.
Ian Owen 《Counselling psychology quarterly》1993,6(3):251-264
This paper is an extended book review of The private life of the psychotherapist by James Guy, an associate professor of psychology at Biola University. This review discusses the joys, stresses and realities of being a therapist. After an overview of joining, remaining in, and retiring from the profession, the next sections deal with the relation between the core skills of psychotherapy as a generic form and the psychological consequences that they are likely to produce. 相似文献
250.
Theodore P. Remley 《Journal of counseling and development : JCD》1993,72(2):157-158
Consultants enter into legal contracts each time they agree to a consultation arrangement outside of their regular work setting. They need to understand the legal context of contracts within which they perform their services and recognize the benefits a written agreement provides. Counselors often provide consultation services as a regular part of their job responsibilities. In such situations, a separate legal contract is not formed when a consultation relationship is created. A written understanding of the consultation arrangement, however, can be beneficial to the consultant and consultee even though a legal contract does not exist. 相似文献