全文获取类型
收费全文 | 31285篇 |
免费 | 1368篇 |
国内免费 | 26篇 |
专业分类
32679篇 |
出版年
2020年 | 360篇 |
2019年 | 437篇 |
2018年 | 629篇 |
2017年 | 591篇 |
2016年 | 686篇 |
2015年 | 443篇 |
2014年 | 543篇 |
2013年 | 2440篇 |
2012年 | 1015篇 |
2011年 | 1005篇 |
2010年 | 601篇 |
2009年 | 663篇 |
2008年 | 843篇 |
2007年 | 860篇 |
2006年 | 760篇 |
2005年 | 666篇 |
2004年 | 648篇 |
2003年 | 593篇 |
2002年 | 612篇 |
2001年 | 1047篇 |
2000年 | 1052篇 |
1999年 | 775篇 |
1998年 | 321篇 |
1997年 | 298篇 |
1995年 | 311篇 |
1992年 | 625篇 |
1991年 | 585篇 |
1990年 | 565篇 |
1989年 | 542篇 |
1988年 | 536篇 |
1987年 | 478篇 |
1986年 | 480篇 |
1985年 | 529篇 |
1984年 | 432篇 |
1983年 | 397篇 |
1982年 | 308篇 |
1979年 | 471篇 |
1978年 | 327篇 |
1977年 | 300篇 |
1976年 | 317篇 |
1975年 | 360篇 |
1974年 | 432篇 |
1973年 | 461篇 |
1972年 | 399篇 |
1971年 | 341篇 |
1970年 | 317篇 |
1969年 | 334篇 |
1968年 | 416篇 |
1967年 | 370篇 |
1966年 | 357篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
961.
962.
F. Suzanne Talbert Peggy J. Wagner Lorraine C. Braswell Sakina Husein 《Journal of clinical psychology in medical settings》1995,2(2):133-148
The psychological stress reactions of 44 family medicine patients who were treated in the emergency room were examined approximately a year after the event. Patients were assessed on several psychological measures, including one for posttraumatic stress disorder (PTSD), and on their perception of how stressful the event was initially and now. Results show continuing stress reactions related to the emergency room event. Three patients endorsed symptoms indicating full PTSD and 13 appeared to have at least partial PTSD. Age appeared to be a factor in the presence of stress symptoms and in degree of perceived communication with the physician. 相似文献
963.
964.
Three experiments examined repetition priming for meaningful environmental sounds (e.g., clock ticking, tooth brushing, toilet flushing, etc.) in a sound stem identification paradigm using brief sound cues. Prior encoding of target sounds together with their associated names facilitated subsequent identification of sound stems relative to nonstudied controls. In contrast, prior exposure to names alone in the absence of the environmental sounds did not prime subsequent sound stem identification performance at all (Experiments 1 and 3). Explicit and implicit memory were dissociated such that sound stem cued recall was higher following semantic than nonsemantic encoding, whereas sound priming was insensitive to manipulations of depth encoding (Experiments 2 and 3). These results extend the findings of long-term repetition priming into the auditory nonverbal domain and suggest that priming for environmental sounds is mediated primarily by perceptual processes. 相似文献
965.
966.
This comment responds to an article by Range and Cotton (1995) on reporting of parental permission and child assent procedures in published articles for 4 psychology journals. Issue is taken with the assumptions, methodology, interpretations, and implications of listing researchers in the Range and Cotton article. There is no evidence researchers failed in their ethical obligations or that children were put at risk. Reporting permission/assent in publications is not an ethical requirement. Listing researchers as "failing" to do something not part of an ethical code is lamentable. Too many unfortunate implications and problems can be derived from Range and Cotton's analysis and conclusions. 相似文献
967.
Richard C. Erickson 《Neuropsychology review》1995,5(4):223-243
This paper surveys the process approach literature with an emphasis on higher level cognitive functions like attention and concentration, learning and memory, and problem solving and executive functioning. In particular, it discusses organizational strategies and kinds of errors found on a variety of tests as well as behavioral, situational, and interpersonal issues as they relate to test procedures. It critiques the process approach and suggests future directions. 相似文献
968.
Goldbort RC 《The Journal of medical humanities》1995,16(2):79-91
Fictional scenarios involving "hard" science offer what are in effect case studies of scientific ethics. From his analysis of Shelley's novel, biologist Leonard Isaacs constructed a model of a "Frankenstein scenario," applicable to the dilemmas posed by the advancement of science in our time, as well as to fiction about science by such contemporary writers as Robin Cook and Michael Crichton. The special contribution of fiction to the study of ethics is that it both reflects and evaluates reality's infinite permutations. In reflecting and judging, the fictional scenarios engage our moral imagination and compel us to confront our personal ethos in relation to the evolving ethos of science. 相似文献
969.
Dr. Ruth L. Fischbach Ph.D. Diane C. Gilbert C.R.A. 《Science and engineering ethics》1995,1(4):389-402
We propose that institutions consider establishing a position of “Ombudsman for Research Practice”. This person would assume several roles: as asounding board to those needing confidential consultation about research issues — basic, applied or clinical; as afacilitator for those wishing to pursue a formal grievance process; and as aneducator to distribute guidelines and standards, to raise the consciousness regarding sloppy or irregular practices in order to prevent misconduct and to promote the responsible conduct of research. While there are compelling features to this position, many complex issues need to be considered and resolved. We invite readers to respond to questions we raise in the text. 相似文献
970.