全文获取类型
收费全文 | 1621篇 |
免费 | 55篇 |
国内免费 | 5篇 |
出版年
2022年 | 9篇 |
2020年 | 21篇 |
2019年 | 19篇 |
2018年 | 41篇 |
2017年 | 40篇 |
2016年 | 29篇 |
2015年 | 23篇 |
2014年 | 42篇 |
2013年 | 198篇 |
2012年 | 82篇 |
2011年 | 88篇 |
2010年 | 46篇 |
2009年 | 41篇 |
2008年 | 71篇 |
2007年 | 69篇 |
2006年 | 63篇 |
2005年 | 61篇 |
2004年 | 61篇 |
2003年 | 56篇 |
2002年 | 58篇 |
2001年 | 34篇 |
2000年 | 24篇 |
1999年 | 27篇 |
1998年 | 34篇 |
1997年 | 21篇 |
1996年 | 26篇 |
1995年 | 24篇 |
1994年 | 26篇 |
1993年 | 21篇 |
1992年 | 23篇 |
1991年 | 15篇 |
1990年 | 13篇 |
1989年 | 15篇 |
1988年 | 9篇 |
1987年 | 15篇 |
1986年 | 11篇 |
1985年 | 13篇 |
1984年 | 11篇 |
1983年 | 19篇 |
1982年 | 14篇 |
1981年 | 13篇 |
1980年 | 15篇 |
1979年 | 10篇 |
1978年 | 22篇 |
1977年 | 13篇 |
1975年 | 14篇 |
1974年 | 12篇 |
1973年 | 6篇 |
1972年 | 7篇 |
1968年 | 6篇 |
排序方式: 共有1681条查询结果,搜索用时 31 毫秒
971.
972.
Thesmall-world problem revolves around the tracing of a line of acquaintances linking any two persons chosen at random. This paper discusses the statistical analysis of data arising out of two experimental studies of the small-world problem. The estimation of parameters in two previously proposed models is discussed, and the goodness-of-fit of these models is considered. 相似文献
973.
974.
Keith Dromm 《Journal of applied philosophy》2002,19(2):155-167
How much privacy must be sacrificed by the partners in a romantic relationship? I begin by showing that we are obligated to reveal to our lovers information about ourselves that we believe could possibly cause them to withdraw their affections from us. If we were to conceal this information, then the lover would be mistaken about whom they loved, yet continue to respect obligations towards, and make sacrifices for, us. I conclude, though, by discussing some problems with both the intelligibility of this obligation and our ability to fulfil it. These problems arise from epistemological and metaphysical problems connected with the notion of a self. 相似文献
975.
976.
977.
978.
979.
Keith Rayner Gretchen Kambe Susan A. Duffy 《The Quarterly Journal of Experimental Psychology Section A: Human Experimental Psychology》2000,53(4):1061-1080
The effect of clause wrap-up on eye movements in reading was examined. Readers read passages in which a target category noun referred to either a high typical or a low typical antecedent. In addition, the category noun was either clause final or non-clause final. There were four primary results: (1) Readers looked longer at a category noun when its antecedent was a low typical member of the category than when it was a high typical member; (2)readers looked longer at the category noun and at the post-category region when they were clause final than when they were not clause final; (3) readers regressed from a category noun or post-category region more frequently when it was clause final than when it was not clause final; and (4) readers made longer initial saccades when their eyes left the category noun or post-category region when this word was in clause final position than when it was not clause final. The last result suggests that sometimes higher order processes that are related to making a decision about when to move the eyes impinge on lower level decisions that are typically associated with deciding where to move the eyes. 相似文献
980.
Robert C Klesges Lisa M Klesges Mark W Vander Weg Margaret DeBon Walker S Carlos Poston Jon Ebbert J Taylor Hays C Keith Haddock 《Health psychology》2007,26(5):588-597
OBJECTIVE: The objective of this study was to compare characteristics of smokers who did and did not report use of cessation aids as part of a tobacco control program in a military setting (n = 8994). DESIGN: The study is a longitudinal epidemiological study where the relationship between smoking status at follow-up and use of pharmacologic aids to quit smoking were assessed. MAIN OUTCOME MEASURES: Smoking cessation, post baseline use of cessation aids to quit smoking. RESULTS AND CONCLUSIONS: Individuals remaining abstinent were 70% less likely to have used NRT/pharmacological aids compared to those that relapsed. NRT/pharmacological aid users were more likely to report plans to smoke after military training, to have friends who smoke, and to accept a cigarette from a friend. NRT/pharmacological aid users were more likely to believe that using NRT was safer than smoking and to have engaged in harm reduction strategies. Our findings suggest that selection bias related to such characteristics may explain some of the discrepancies between effect sizes reported in efficacy compared to effectiveness studies of NRT and smoking outcomes currently reported in the literature. 相似文献