全文获取类型
收费全文 | 88852篇 |
免费 | 3921篇 |
国内免费 | 38篇 |
出版年
2020年 | 1015篇 |
2019年 | 1254篇 |
2018年 | 1809篇 |
2017年 | 1915篇 |
2016年 | 1965篇 |
2015年 | 1420篇 |
2014年 | 1634篇 |
2013年 | 7746篇 |
2012年 | 2951篇 |
2011年 | 3056篇 |
2010年 | 1923篇 |
2009年 | 1950篇 |
2008年 | 2674篇 |
2007年 | 2600篇 |
2006年 | 2360篇 |
2005年 | 2017篇 |
2004年 | 2004篇 |
2003年 | 1955篇 |
2002年 | 1907篇 |
2001年 | 2854篇 |
2000年 | 2708篇 |
1999年 | 2044篇 |
1998年 | 1047篇 |
1997年 | 879篇 |
1996年 | 938篇 |
1995年 | 887篇 |
1994年 | 856篇 |
1993年 | 837篇 |
1992年 | 1701篇 |
1991年 | 1598篇 |
1990年 | 1563篇 |
1989年 | 1471篇 |
1988年 | 1440篇 |
1987年 | 1364篇 |
1986年 | 1330篇 |
1985年 | 1440篇 |
1984年 | 1189篇 |
1983年 | 1026篇 |
1981年 | 835篇 |
1979年 | 1225篇 |
1978年 | 958篇 |
1977年 | 840篇 |
1975年 | 1031篇 |
1974年 | 1127篇 |
1973年 | 1154篇 |
1972年 | 971篇 |
1971年 | 858篇 |
1968年 | 968篇 |
1967年 | 830篇 |
1966年 | 867篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
191.
192.
The purpose of this meta-analysis of randomized controlled trials was to evaluate the efficacy of psychological interventions for adults with noncancerous chronic low back pain (CLBP). The authors updated and expanded upon prior meta-analyses by using broad definitions of CLBP and psychological intervention, a broad data search strategy, and state-of-the-art data analysis techniques. All relevant controlled clinical trials meeting the inclusion criteria were identified primarily through a computer-aided literature search. Two independent reviewers screened abstracts and articles for inclusion criteria and extracted relevant data. Cohen's d effect sizes were calculated by using a random effects model. Outcomes included pain intensity, emotional functioning, physical functioning (pain interference or pain-specific disability, health-related quality of life), participant ratings of global improvement, health care utilization, health care provider visits, pain medications, and employment/disability compensation status. A total of 205 effect sizes from 22 studies were pooled in 34 analyses. Positive effects of psychological interventions, contrasted with various control groups, were noted for pain intensity, pain-related interference, health-related quality of life, and depression. Cognitive-behavioral and self-regulatory treatments were specifically found to be efficacious. Multidisciplinary approaches that included a psychological component, when compared with active control conditions, were also noted to have positive short-term effects on pain interference and positive long-term effects on return to work. The results demonstrated positive effects of psychological interventions for CLBP. The rigor of the methods used, as well as the results that reflect mild to moderate heterogeneity and minimal publication bias, suggest confidence in the conclusions of this review. 相似文献
193.
194.
A theoretical structure for multiattribute decision making is presented, based on a dynamical system for interactions in a neural network incorporating affective and rational variables. This enables modeling of problems that elude two prevailing economic decision theories: subjective expected utility theory and prospect theory. The network is unlike some that fit economic data by choosing optimal weights or coefficients within a predetermined mathematical framework. Rather, the framework itself is based on principles used elsewhere to model many other cognitive and behavioral data, in a manner approximating how humans perform behavioral functions. Different, interconnected modules within the network encode (a) attributes of objects among which choices are made, (b) object categories, (c) and goals of the decision maker. An example is utilized to simulate the actual consumer choice between old and new versions of Coca-Cola. Potential applications are also discussed to market decisions involving negotiations between participants, such as international petroleum traders. 相似文献
195.
James Turner Johnson 《The Journal of religious ethics》2018,46(2):379-398
Three recent books focus, in different ways, on the idea of human rights and its relation to religion and religious ethics. All three books discussed here address criticisms of the human rights idea and seek to establish the relationship of religion and human rights with regard to the field of policy. The present discussion begins with an overview that places these three books in the larger context of the development of the human rights idea and its historical relationship with religion. It then turns to Little's book, next to the collection of essays edited by Twiss, Simion, and Petersen, which is described internally as a Festschrift for Little, and then to Hogan's book, and in the final section it explores comparisons among the books. 相似文献
196.
197.
Edwin S. Shneidman 《Suicide & life-threatening behavior》1994,24(4):395-397
This brief paper focuses on a rather recondite aspect of the suicidal scenario: dissembling (feigning, pretending, withholding). Most individuals who commit suicide exhibit prodromal indicia in the month before. These verbal and behavioral clues are found in about 90% of psychological autopsies of suicidal deaths. As for the other 10% who mask or hide their lethal intentions, we do well to assume that even some hidden clues might be deciphered by the skillful clinician or the alert friend or colleague. 相似文献
198.
199.
200.