全文获取类型
收费全文 | 30022篇 |
免费 | 944篇 |
国内免费 | 13篇 |
出版年
2019年 | 246篇 |
2018年 | 410篇 |
2017年 | 433篇 |
2016年 | 563篇 |
2015年 | 392篇 |
2014年 | 362篇 |
2013年 | 1888篇 |
2012年 | 867篇 |
2011年 | 889篇 |
2010年 | 424篇 |
2009年 | 444篇 |
2008年 | 633篇 |
2007年 | 572篇 |
2006年 | 526篇 |
2005年 | 1794篇 |
2004年 | 1083篇 |
2003年 | 894篇 |
2002年 | 601篇 |
2001年 | 711篇 |
2000年 | 687篇 |
1999年 | 496篇 |
1998年 | 252篇 |
1992年 | 490篇 |
1991年 | 484篇 |
1990年 | 500篇 |
1989年 | 490篇 |
1988年 | 429篇 |
1987年 | 449篇 |
1986年 | 479篇 |
1985年 | 501篇 |
1984年 | 424篇 |
1983年 | 396篇 |
1982年 | 278篇 |
1981年 | 315篇 |
1980年 | 247篇 |
1979年 | 463篇 |
1978年 | 331篇 |
1977年 | 292篇 |
1976年 | 285篇 |
1975年 | 431篇 |
1974年 | 488篇 |
1973年 | 507篇 |
1972年 | 432篇 |
1971年 | 417篇 |
1970年 | 390篇 |
1969年 | 420篇 |
1968年 | 506篇 |
1967年 | 489篇 |
1966年 | 465篇 |
1958年 | 252篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
791.
792.
793.
794.
795.
796.
797.
Tenacious goal pursuit and flexible goal adjustment: explication and age-related analysis of assimilative and accommodative strategies of coping 总被引:6,自引:0,他引:6
Crises and critical life transitions activate 2 distinct but complementary modes of coping, (a) transforming developmental circumstances in accordance with personal preferences (assimilative tendency) and (b) adjusting personal preferences to situational constraints (accommodative tendency). Assimilative and accommodative tendencies were measured by a questionnaire comprising 2 independent scales (Tenacious Goal Pursuit and Flexible Goal Adjustment). Both scales predict high life satisfaction and low depression and are positively related to generalized internal control beliefs. The scales evinced an opposite relation to age: Cross-sectional analyses on a sample of 890 Ss in the age range from 34 to 63 years revealed a gradual shift from an assimilative to an accommodative mode of coping. Implications for theories of depression and successful aging are discussed. 相似文献
798.
The Sheltered Care Environment Scale (SCES) was developed primarily to measure social climate as an attribute of a setting. As such, the SCES was designed to maximize differences between facilities and minimize differences among individuals within a setting. However, Smith and Whitbourne (1990) assessed the validity of the SCES as a measure of individual differences in perceptions of a shared environment. Moreover, they redefined the content coverage of 2 of the SCES subscales (Independence and Physical Comfort), to encompass attributes the SCES is not intended to measure. In general, preliminary evidence indicates that the SCES subscales provide reasonably reliable and valid indices of the social climate of group residential facilities. 相似文献
799.
Life stressors, social resources, and late-life problem drinking 总被引:2,自引:0,他引:2
Life stressors and social resources among late-middle-aged problem and nonproblem drinkers were studied. Problem drinkers (n = 501) reported more negative life events, chronic stressors, and social resource deficits than did nonproblem drinkers (n = 609). In a comparison of problem drinkers, men reported more ongoing stressors involving finances and friends, and fewer resources from children, extended-family members, and friends than did women. Women who are problem drinkers reported more negative life events, more ongoing difficulties with spouses and extended-family members, and fewer resources from spouses. Among both the problem and nonproblem drinkers, more stressors were associated with fewer social resources, but only within certain life domains. Late-middle-aged adults' chronic stressors and social resources helped explain their drinking behavior, depression, and self-confidence even after sex, marital status, and negative life events were considered. 相似文献
800.
Three experiments were conducted to examine age differences in memory for telephone numbers by adults ranging from 18 to 85 years of age. In the first 2 studies, using visual simultaneous presentation, age declines in immediate recall were evident on 10-digit numbers, but not on 3-digit numbers. With 7-digit numbers, the youngest group performed significantly better than the oldest (70-85 years) group. In the second study, more marked age declines occurred when subjects had to redial a number after a busy signal. The third experiment replicated the observed aging pattern with auditory sequential presentation. Also, chunked presentation of local telephone numbers resulted in high performance for old and young in sequential recall. The findings were discussed in relation to task processing demands and practical issues related to telephone number recall. 相似文献