全文获取类型
收费全文 | 37985篇 |
免费 | 1376篇 |
国内免费 | 11篇 |
出版年
2018年 | 597篇 |
2017年 | 539篇 |
2016年 | 628篇 |
2015年 | 455篇 |
2014年 | 537篇 |
2013年 | 3622篇 |
2012年 | 938篇 |
2011年 | 976篇 |
2010年 | 638篇 |
2009年 | 609篇 |
2008年 | 928篇 |
2007年 | 845篇 |
2006年 | 773篇 |
2005年 | 670篇 |
2004年 | 653篇 |
2003年 | 679篇 |
2002年 | 647篇 |
2001年 | 1199篇 |
2000年 | 1152篇 |
1999年 | 885篇 |
1998年 | 406篇 |
1996年 | 513篇 |
1995年 | 494篇 |
1994年 | 484篇 |
1993年 | 457篇 |
1992年 | 919篇 |
1991年 | 811篇 |
1990年 | 829篇 |
1989年 | 730篇 |
1988年 | 733篇 |
1987年 | 709篇 |
1986年 | 711篇 |
1985年 | 691篇 |
1984年 | 624篇 |
1983年 | 514篇 |
1982年 | 415篇 |
1981年 | 425篇 |
1979年 | 574篇 |
1978年 | 449篇 |
1976年 | 402篇 |
1975年 | 540篇 |
1974年 | 522篇 |
1973年 | 591篇 |
1972年 | 561篇 |
1971年 | 502篇 |
1970年 | 439篇 |
1969年 | 422篇 |
1968年 | 536篇 |
1967年 | 458篇 |
1966年 | 442篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
181.
182.
183.
Context and structure in conceptual combination 总被引:8,自引:0,他引:8
184.
Two modes of learning for interactive tasks 总被引:5,自引:0,他引:5
185.
Perlin E 《Journal of religion and health》1988,27(4):279-284
The care of the patient with cancer requires the development not only of a medical plan, but an ethical plan as well. This plan should integrate the physician's and the patient's perceptions of medical and ethical propriety. Jewish biomedical ethical principles are based on the teaching of the Old Testament and its various interpretations. In this paper, I discuss how these principles can be used to help guide the physician caring for the patient with cancer. Other ethical systems could be applied in a similar fashion. 相似文献
186.
Jacqueline M. Golding Patricia Gongla Arlene Brownell 《American journal of community psychology》1988,16(1):39-51
Survey respondents may inaccurately report mental health service utilization for motivational and cognitive reasons. There is little evidence on accuracy of self-reports of mental health service use, and this evidence suggests that respondents tend to underreport inpatient utilization. This study addressed the question of self-report accuracy by comparing survey data from a large probability sample to data from computerized records of publicly funded mental health services. Few inaccuracies in self-reporting were detected. However, despite the use of data bases that were unusually appropriate for verifying self-reports, several problems limited the feasibility of validation. Suggestions are offered for increasing the feasibility of validation in future studies. 相似文献
187.
188.
The precaution adoption process 总被引:47,自引:0,他引:47
N D Weinstein 《Health psychology》1988,7(4):355-386
This article presents a critique of current models of preventive behavior. It discusses a variety of factors that are usually overlooked-including the appearance of costs and benefits over time, the role of cues to action, the problem of competing life demands, and the ways that actual decision behavior differs from the rational ideal implicit in expectancy-value and utility theories. Such considerations suggest that the adoption of new precautions should be viewed as a dynamic process with many determinants. The framework of a model that is able to accommodate these additional factors is described. This alternative model portrays the precaution adoption process as an orderly sequence of qualitatively different cognitive stages. Data illustrating a few of the suggestions made in the article are presented, and implications for prevention programs are discussed. 相似文献
189.
Selma A. Lewis Jim Johnson Patricia Cohen Marc Garcia Carmen Noemi Velez 《Journal of abnormal child psychology》1988,16(4):459-471
Twenty-six suicide attempters, 9 to 18 years of age, were compared with 725 nonattempters on measures of school achievement, educational goals, socioeconomic status, and depression. As has been found in studies using clinical samples, suicide attempters in our communitybased sample had significantly lower school achievement than nonattempters. The relationship between attempted suicide and low school achievement seemed to be explained by the effects of depression. Lower-SES youth tended to be more likely to attempt suicide than higher-SES youths. However, SES appeared to have little effect on the relationship between attempted suicide and school achievement. Results also suggest that children of mothers with low educational goals for them may be more at risk for attempted suicide than youths whose mothers have higher educational goals for their children.This research was supported by the National Institute of Mental Health, Grant No. MH36971. 相似文献
190.