全文获取类型
收费全文 | 19277篇 |
免费 | 807篇 |
国内免费 | 15篇 |
专业分类
20099篇 |
出版年
2021年 | 161篇 |
2020年 | 288篇 |
2019年 | 341篇 |
2018年 | 451篇 |
2017年 | 447篇 |
2016年 | 474篇 |
2015年 | 341篇 |
2014年 | 455篇 |
2013年 | 2114篇 |
2012年 | 754篇 |
2011年 | 848篇 |
2010年 | 509篇 |
2009年 | 557篇 |
2008年 | 722篇 |
2007年 | 748篇 |
2006年 | 714篇 |
2005年 | 663篇 |
2004年 | 628篇 |
2003年 | 645篇 |
2002年 | 649篇 |
2001年 | 325篇 |
2000年 | 286篇 |
1999年 | 289篇 |
1998年 | 289篇 |
1997年 | 318篇 |
1996年 | 271篇 |
1995年 | 250篇 |
1994年 | 238篇 |
1993年 | 253篇 |
1992年 | 232篇 |
1991年 | 221篇 |
1990年 | 197篇 |
1989年 | 186篇 |
1988年 | 154篇 |
1987年 | 191篇 |
1986年 | 188篇 |
1985年 | 223篇 |
1984年 | 233篇 |
1983年 | 217篇 |
1982年 | 221篇 |
1981年 | 219篇 |
1980年 | 211篇 |
1979年 | 185篇 |
1978年 | 218篇 |
1977年 | 207篇 |
1976年 | 188篇 |
1975年 | 198篇 |
1974年 | 189篇 |
1973年 | 144篇 |
1972年 | 110篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
171.
Lawrence R. Murphy David DuBois Joseph J. Hurrell 《Journal of business and psychology》1986,1(1):5-18
The deleterious effects of occupational stress on worker health and well-being have been described in numerous reports for a wide range of work groups. Work overload (and underload), deadline pressures, role Stressors, underutilization of abilities, and physical discomfort have been identified as work factors associated with increased stress symptom reporting. The relationship between work stress and accident/injury occurrences is less clearly documented, although scattered reports in the literature suggest a contributory role for stress in the accident process. In this article, data linking stress to unsafe work behavior are reviewed and a model is proposed wherein accidents can arise from impaired worker capabilities (e.g., slower reaction time) brought about by stress symptom activity (e.g., anxiety). The potential usefulness of stress management training (SMT) for shortcircuiting the stress/accidents cycle by alleviating stress symptoms is discussed in light of recent empirical research.Portions of this article were presented at the Third Annual Scientist/Practitioner Conference in Industrial/Organizational Psychology, Virginia Beach, Virginia, October, 1982. 相似文献
172.
David J. Moultrup 《Contemporary Family Therapy》1986,8(2):157-167
Integration is one of the most prevalent contemporary themes in the field of family therapy. This discussion proposes a process-based model of integration which transcends theoretical content. A brief review of integrative efforts in the field of marriage and family therapy is followed by an exploration of issues related to theoretical content. A model for understanding the personal process of integration is developed which articulates a five stage process of integration. Finally, after a brief character development to illustrate the different stages, some initial implications for a process-based model of integration are explored.David J. Moultrup, MSW, LICSW, is in private practice in Arlington, Massachusetts. 相似文献
173.
In this study of 37 pre-therapy and 23 matched control families who never sought family therapy, father-child welfare affect and mother-child emergency affect were significantly higher in the control families. Control families were found generally to express more Welfare and Emergency emotion. Affective expression between parents did not significantly differentiate the groups.This study has been supported by Grant No. MA-4510 of the Medical Research Council of Canada and was presented at the annual meeting of the Canadian Psychiatric Association, Ottawa, Ontario, Canada, September 1983. The authors wish to express their thanks to Toby Schwartz, Harriet Gold-Kaats, and Terry Tannenbaum-Dascal, who acted as coders and research assistants; Joseph Beltempo, BSc, who helped in the statistical analysis; and James Robbins, PhD, who gave much valuable advice. 相似文献
174.
Christie B. Gardiner Margaret M. Beaumont J. Graham Eason Ken Davidoff Jules B. Richardson John T. E. Messer David Newstead Steve 《Current psychology (New Brunswick, N.J.)》1986,5(2):205-216
Current Psychology - 相似文献
175.
This paper describes a simple infrared photocell circuit that is inexpensive and easy to construct. The light source and detector are housed inexpensively and are focused so the light and detector may be separated over significant distances. The circuit may be used in a variety of conditions, including total darkness and bright fluorescent lighting, without having to readjust or recalibrate the circuitry. Output from the circuit may be used to drive other transistors or electromechanical relays. With minimal additional circuitry and hardware the signal may be interfaced with an Apple computer. 相似文献
176.
Frank D. Lewis William F. Blackerby Janet Rainwater Ross Mark L. Guth Ronald F. Cronkey Melvin J. White Tina Cook 《Behavioral Interventions》1986,1(4):265-274
This study evaluated the relative efficacy of long (1 minute) and short (15 seconds) durations of negative practice for reducing self-stimulatory leg pounding of a traumatically brain-injured adult. In individual social skill training classes, long negative practice and short negative practice were administered concurrently in an alternating treatments design. Generalization of treatment effects outside of training sessions was assessed during the client's lunch period. The results revealed that both durations of negative practice were equally effective in reducing leg pounding during training sessions. However, the effects of training did not generalize to settings in which the practice contingency was not enforced. Pounding was more frequent and negative practice somewhat less effective during periods of high social stimulation. 相似文献
177.
Attention, Perception, & Psychophysics - Speech perception abilities are modified by linguistic experience to maximize sensitivity to acoustic contrasts that are important for one’s... 相似文献
178.
Six tasks administered on a MINC-11 minicomputer were used in studying the effects of long, continuous work periods and fatigue on physical and cognitive task performance. Submaximal physiological workload measurement was done during one of these tasks for a subject walking on a treadmill. The MINC-11 system is described, as are the six tasks programs. Four of these tasks measured various types of reaction times, another involved complex information processing, and one appraised moods, physical symptoms, fatigue, and the physiological status of subjects. 相似文献
179.
Simulations of space use by animals were run to determine the relationship among home range area estimates, variability, and sample size (number of locations). As sample size increased, home range size increased asymptotically, whereas variability decreased among mean home range area estimates generated by multiple simulations for the same sample size. Our results suggest that field workers should ascertain between 100 and 200 locations in order to estimate reliably home range area. In some cases, this suggested guideline is higher than values found in the few published studies in which the relationship between home range area and number of locations is addressed. Sampling differences for small species occupying relatively small home ranges indicate that fewer locations may be sufficient to allow for a reliable estimate of home range. Intraspecific variability in social status (group member, loner, resident, transient), age, sex, reproductive condition, and food resources also have to be considered, as do season, habitat, and differences in sampling and analytical methods. Comparative data still are needed. 相似文献
180.
A radiotelemetry system for continuous monitoring of the temperature and/or location of small animals is described. All the functions of system control are carried out by an on-line microcomputer (TRS-80 Model III), resulting in a versatile system capable of alternating recording the temperature/location of multiple subjects with other behavioral or physiological events, such as activity level. We describe the use of this system in monitoring body temperature in hamsters and in recording the incubation pattern of breeding ring doves. 相似文献