全文获取类型
收费全文 | 2176篇 |
免费 | 94篇 |
国内免费 | 2篇 |
专业分类
2272篇 |
出版年
2020年 | 20篇 |
2019年 | 34篇 |
2018年 | 42篇 |
2017年 | 64篇 |
2016年 | 72篇 |
2015年 | 42篇 |
2014年 | 37篇 |
2013年 | 211篇 |
2012年 | 74篇 |
2011年 | 88篇 |
2010年 | 58篇 |
2009年 | 57篇 |
2008年 | 65篇 |
2007年 | 54篇 |
2006年 | 71篇 |
2005年 | 52篇 |
2004年 | 66篇 |
2003年 | 63篇 |
2002年 | 65篇 |
2001年 | 36篇 |
2000年 | 42篇 |
1999年 | 29篇 |
1998年 | 32篇 |
1997年 | 21篇 |
1996年 | 31篇 |
1995年 | 20篇 |
1994年 | 22篇 |
1993年 | 21篇 |
1992年 | 33篇 |
1991年 | 36篇 |
1990年 | 35篇 |
1989年 | 28篇 |
1988年 | 34篇 |
1987年 | 26篇 |
1986年 | 24篇 |
1985年 | 42篇 |
1984年 | 27篇 |
1983年 | 44篇 |
1982年 | 25篇 |
1981年 | 32篇 |
1980年 | 22篇 |
1979年 | 32篇 |
1978年 | 23篇 |
1977年 | 26篇 |
1976年 | 28篇 |
1975年 | 19篇 |
1974年 | 19篇 |
1973年 | 32篇 |
1968年 | 24篇 |
1967年 | 20篇 |
排序方式: 共有2272条查询结果,搜索用时 0 毫秒
21.
In our research, the data are gathered in the laboratory on a DEC PDP-11/24 minicomputer. Once the data are gathered, they are analog-to-digital (A/D) converted and sent by the PDP to an IBM 370-3031. The data are submitted to a Fast Fourier Transform (FFT) on the IBM computer. Once the FFT is completed, the data are accessed by an IBM PC-XT that is equipped with an IRMA system. The PC is used in its emulation mode to access the data in the mainframe. In the mainframe, SPSS or SAS is used to do the initial statistical analyses. When necessary, subsets of the data are transferred to the PC, where other computer programs are used to analyze the data. In many instances, they are returned to the mainframe from the PC, where they are submitted to multivariate statistical analysis. Finally, all of the data are stored on floppy disks, which are prepared on the PC. 相似文献
22.
23.
24.
25.
A Wilson 《Journal of personality assessment》1985,49(4):346-355
This study examines evidence for boundary disturbances in depressive, borderline, and schizophrenic hospitalized inpatients. Certain thought disorder signs on the Rorschach are reconceptualized as indices of boundary formation, which is defined as the capacity to create particular distinctions along wome bipolar coordinate of experience where previously no distinction was possible, and which defines each cluster of experience through a maintenance of differential functioning. The borderline group scored significantly high on the indices of laxness and moderately severe inner-outer boundary formation. The schizophrenic group scored significantly higher on indices of self-other and somewhat higher on severe inner-outer boundary disturbance. Schizophrenics may be organized at a level of self-other boundary formation which subsumes inner-outer boundary formation, while the borderline group is organized at a level of inner-outer boundary formation. 相似文献
26.
R M Olig R D Staton W W Beatty H Wilson R I Biberdorf S G Hoag R A Brumback 《Perceptual and motor skills》1985,60(3):879-889
Plasma concentrations of imipramine and amitriptyline and their desmethylated metabolites were measured in 20 children being treated for major depressive illness 2 wk. and 5 to 10 wk. after achieving drug dosages of 2.25 mg/kg body weight. At 2 wk. all children had exhibited clinical improvement, but by 10 wk. 4 of the 10 children treated with imipramine and 5 of the 10 children treated with amitriptyline had experienced clinical relapse of depressive symptoms. Tricyclic antidepressant plasma concentrations and ratios were comparable in the subgroups of children who maintained their clinical improvement and those who relapsed. There was no evidence of a systematic decline in plasma tricyclic antidepressant concentrations in those children who relapsed. 相似文献
27.
Fred M. Zimring 《Journal of research in personality》1985,19(2):170-184
The present experiments examined the effects of self-focus, as produced by focusing on feelings, on memory. In an initial experiment subjects did complex mental arithmetic significantly faster after self-focus. Because complex mental addition involves internally generated stimuli, the remaining experiments compared the effects, on memory, of self-focus on internally generated stimuli to the effect of self-focus on stimuli supplied by the experimenter. In a second experiment, self-focus facilitated memory for digits recalled in reverse order but not for digits when recalled in the given order. In a third experiment, self-focus facilitated the memory for the classification of digits but not for the digits themselves. In a fourth and fifth experiment, self-focus aided memory for classification of objects into categories such as small, medium, or large but did not aid memory for the objects themselves. In general, improved performance due to feeling focus was attributed to the role that self-focus may play in increasing attention to internally generated stimuli. 相似文献
28.
29.
30.