全文获取类型
收费全文 | 26395篇 |
免费 | 925篇 |
国内免费 | 6篇 |
出版年
2019年 | 344篇 |
2018年 | 401篇 |
2017年 | 389篇 |
2016年 | 472篇 |
2015年 | 318篇 |
2014年 | 445篇 |
2013年 | 2362篇 |
2012年 | 763篇 |
2011年 | 846篇 |
2010年 | 554篇 |
2009年 | 568篇 |
2008年 | 747篇 |
2007年 | 810篇 |
2006年 | 784篇 |
2005年 | 667篇 |
2004年 | 675篇 |
2003年 | 657篇 |
2002年 | 654篇 |
2001年 | 601篇 |
2000年 | 675篇 |
1999年 | 490篇 |
1998年 | 370篇 |
1997年 | 304篇 |
1996年 | 316篇 |
1995年 | 308篇 |
1994年 | 297篇 |
1992年 | 415篇 |
1991年 | 419篇 |
1990年 | 410篇 |
1989年 | 389篇 |
1988年 | 378篇 |
1987年 | 358篇 |
1986年 | 369篇 |
1985年 | 394篇 |
1984年 | 334篇 |
1983年 | 361篇 |
1982年 | 325篇 |
1981年 | 305篇 |
1980年 | 299篇 |
1979年 | 365篇 |
1978年 | 371篇 |
1977年 | 292篇 |
1976年 | 282篇 |
1975年 | 347篇 |
1974年 | 380篇 |
1973年 | 399篇 |
1972年 | 331篇 |
1971年 | 281篇 |
1968年 | 316篇 |
1967年 | 282篇 |
排序方式: 共有10000条查询结果,搜索用时 218 毫秒
831.
832.
Critiquing Pygmalion: A 25-Year Perspective 总被引:1,自引:0,他引:1
Robert Rosenthal 《Current directions in psychological science》1995,4(6):171-172
833.
Smita Shukla Alan V. Surratt Robert H. Horner Richard W. Albin 《Behavioral Interventions》1995,10(2):101-110
This case study examines the relationship between self-initiations of an adult woman with severe disabilities and the directive behavior of staff persons in a community residential setting. Hypotheses generated from functional assessment procedures indicated that (a) Susan's low self-initiations were very likely related to high directive behavior of staff persons, and (b) infrequent problem behaviors during the morning routine were maintained by escape from repeated staff demands. An intervention was implemented to enable Susan to increase self-initiation in choice and sequence of activities and simultaneously decrease staff directives. Results and discussion focus on the need for a contextual approach for addressing problematic situations and an affirmation of the effectiveness of the positive behavioral support technology for increasing adaptive behaviors in individuals with severe disabilities. 相似文献
834.
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
835.
836.
Robert M Veatch 《Kennedy Institute of Ethics journal》1995,5(3):199-218
While much attention has been given to the use of principles in biomedical ethics and increasing attention is given to alternative theoretical approaches, relatively little attention has been devoted to the critical task of how one resolves conflicts among competing principles. After summarizing the system of principles and some problems in conceptualizing the principles, several strategies for reconciling conflicts among principles are examined including the use of single-principle theories (pure libertarianism, pure utilitarianism, and pure Hippocratism), balancing theories, conflicting appeals theories, and lexical ordering. Then a mixed strategy is proposed in which consequentialist principles are balanced between themselves as are nonconsequentialist principles, after which the result of balancing the nonconsequentialist principles is lexically ranked over the result of balancing the consequentialist ones. Finally, strategies involving specifying and rule generation are discussed concluding that most current specification and rule-generating theories must involve some degree of lexical ordering of principles. 相似文献
837.
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
838.
Hull R 《The Journal of medical humanities》1995,16(2):93-103
As I have suggested, from the perspective of distributive justice MinnesotaCare's reforms are inadequate. But to coin (and alter slightly) a phrase of Kant's, if its authors do not deserve our moral esteem, perhaps they do merit our encouragement, and it is on a note of the latter that I will conclude. MinnesotaCare is an experiment in systemic incremental change being performed in a complex health care system, the only true laboratory for such an experiment. For this reason, it will provide us important information concerning the ethics, economics, [and] the politics of health care reform while improving the position of some Minnesotans in a significant way. Thus, while MinnesotaCare is susceptible to forceful moral criticism, as an experiment in reform it holds out the promise of providing us some of the data necessary for discovering a just solution. 相似文献
839.
840.
Gibson (1966, 1979) suggested that an important property of perception is that the observer is active. Two experiments were conducted to examine the benefits of active observation in determining dynamic spatial orientation. Subjects were presented with displays simulating locomotion through a three-dimensional environment. Active observers continuously controlled locomotion, whereas passive observers viewed the display. During the trial, the display was blacked out for a brief period, followed by a static image that was at either the correct or the incorrect orientation following the blackout. Subjects were required to indicate whether they were positioned at the correct extrapolated orientation. The presence or absence of orientation change, the type of change (changes in rotation about the depth axis [roll], horizontal axis [pitch], or forward translation), the duration of the blackout, and the consistency of change were varied. In addition, the experiments used either a compensatory or a pursuit tracking task. Active observers had greater sensitivity than did passive observers in detecting a change for both tracking tasks. Subjects in both experiments exhibited greater sensitivity in detecting inconsistent changes (relative to consistent changes), suggesting that the dynamics specified by optical flow were incorporated in extrapolated orientation. In addition, sensitivity decreased with an increase in blackout duration. The results are discussed in terms of an extrapolation model of perception that incorporates the responses executed by active observers. 相似文献