全文获取类型
收费全文 | 54977篇 |
免费 | 1323篇 |
国内免费 | 25篇 |
出版年
2020年 | 421篇 |
2019年 | 466篇 |
2018年 | 3981篇 |
2017年 | 3363篇 |
2016年 | 2848篇 |
2015年 | 665篇 |
2014年 | 715篇 |
2013年 | 3182篇 |
2012年 | 1704篇 |
2011年 | 3553篇 |
2010年 | 3172篇 |
2009年 | 2186篇 |
2008年 | 2706篇 |
2007年 | 3160篇 |
2006年 | 1071篇 |
2005年 | 1146篇 |
2004年 | 1063篇 |
2003年 | 988篇 |
2002年 | 972篇 |
2001年 | 996篇 |
2000年 | 1009篇 |
1999年 | 778篇 |
1998年 | 466篇 |
1997年 | 428篇 |
1996年 | 389篇 |
1994年 | 353篇 |
1993年 | 347篇 |
1992年 | 583篇 |
1991年 | 554篇 |
1990年 | 583篇 |
1989年 | 532篇 |
1988年 | 486篇 |
1987年 | 511篇 |
1986年 | 526篇 |
1985年 | 571篇 |
1984年 | 483篇 |
1983年 | 439篇 |
1982年 | 360篇 |
1981年 | 350篇 |
1979年 | 489篇 |
1978年 | 396篇 |
1977年 | 351篇 |
1975年 | 433篇 |
1974年 | 466篇 |
1973年 | 435篇 |
1972年 | 379篇 |
1969年 | 358篇 |
1968年 | 388篇 |
1967年 | 348篇 |
1966年 | 348篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
971.
This study investigated the psychological and physical health status of 265 crew members on two U.S. Navy ships (a guided
missile cruiser and a frigate on convoy escort duty for tankers under U.S. flag) during the Persian Gulf conflict at four
time periods during combat-ready operations on a single day. Findings suggest that adaptation occurs to extreme stressors
associated with sustained operations. Suggestions are made relative to measures that may minimize psychological and physical
conditions that adversely affect performance under conditions of heavy stress.
Report No. 89-18, supported by the Naval Medical Research and Development Command, Bethesda MD, Department of the Navy, under
research Work Unit No. 63206N.M0096. The opinions expressed in this paper are those of the author and do not reflect the official
policy or position of the Department of the Navy, Department of Defense, nor the U.S. Government. 相似文献
972.
David Lester 《Current Psychology》1993,12(4):312-325
The views of a variety of theorists who have proposed that the mind may be usefully conceptualized as made up of a set of
subselves are reviewed, and several principles are proposed for a possible systems theory of personality. 相似文献
973.
Frederick G. Lopez Christopher W. Thurman 《Journal of counseling and development : JCD》1993,71(5):524-527
In this study the authors investigated differences in the family environments of high- and low-trait angry college students. High-trait angry students described their family environments as significantly less cohesive, less emotionally expressive, more conflictual, and more disorganized than did their low-trait angry counterparts. Implications of the findings to the counseling of students with anger-related problems are discussed. 相似文献
974.
Recommendations for improving consultation research include (a) strengthening consultation analogue research by incorporating “boundary” conditions into research designs and (b) extending the outcome measures used. 相似文献
975.
976.
977.
Private and public sector managers were compared regarding their job characteristics and organizational commitment. We hypothesized that job characteristics would be positively related to commitment and that sector would moderate that relationship. Moderated regression analyses revealed partial support for both hypotheses. The existence of clarity and challenge were positively related to commitment. Job characteristics demonstrated a stronger relationship with commitment among private sector managers. Explanations for these findings and directions for future research are discussed. 相似文献
978.
979.
Juan S. Gómez-Jeria Lic. Q. 《Journal of Near-Death Studies》1993,11(4):219-222
This paper describes a possible near-death experience (NDE) among the Mapuche people of Chile. The individual reporting the experience was in a cataleptic-like state for two days, the experience itself occurring at the end of this period. Some common features of NDEs, such as encounters with deceased people and being sent back, are present, together with clear evidence that past and present cultural environment shape in part the content of mental experiences.This work was funded in part by the University of Chile (DTI Project Q-3064).The author thanks Editorial Andrés Bello for permissionto translate the near death account into English. 相似文献
980.