全文获取类型
收费全文 | 1912篇 |
免费 | 115篇 |
专业分类
2027篇 |
出版年
2020年 | 28篇 |
2019年 | 35篇 |
2018年 | 61篇 |
2017年 | 44篇 |
2016年 | 51篇 |
2015年 | 28篇 |
2014年 | 40篇 |
2013年 | 211篇 |
2012年 | 76篇 |
2011年 | 68篇 |
2010年 | 50篇 |
2009年 | 37篇 |
2008年 | 90篇 |
2007年 | 81篇 |
2006年 | 70篇 |
2005年 | 46篇 |
2004年 | 42篇 |
2003年 | 45篇 |
2002年 | 46篇 |
2001年 | 54篇 |
2000年 | 52篇 |
1999年 | 46篇 |
1998年 | 26篇 |
1997年 | 16篇 |
1996年 | 29篇 |
1995年 | 30篇 |
1994年 | 19篇 |
1993年 | 17篇 |
1992年 | 36篇 |
1991年 | 21篇 |
1990年 | 23篇 |
1989年 | 22篇 |
1988年 | 24篇 |
1987年 | 25篇 |
1986年 | 24篇 |
1985年 | 26篇 |
1984年 | 19篇 |
1983年 | 16篇 |
1982年 | 20篇 |
1981年 | 16篇 |
1979年 | 17篇 |
1978年 | 26篇 |
1977年 | 23篇 |
1976年 | 18篇 |
1975年 | 23篇 |
1974年 | 18篇 |
1971年 | 17篇 |
1968年 | 23篇 |
1967年 | 15篇 |
1966年 | 15篇 |
排序方式: 共有2027条查询结果,搜索用时 0 毫秒
131.
132.
133.
134.
135.
136.
Jessica Motherwell McFarlane Tannis MacBeth Williams 《Psychology of women quarterly》1994,18(3):339-373
In a longitudinal prospective study, mood fluctuations were assessed for evidence of premenstrual syndrome (PMS) as well as other menstrual, day of week, and lunar cyclicity. Volunteer participants from the community (60 women and 10 men) provided daily data for 12 to 18 weeks. Significant mood fluctuation was determined by a new nonparametric method using each individual's own standard deviation as a measure of marked change. Cyclicity was the norm; two thirds of both the women and men had one or more menstrual or lunar phases or days of the week that were markedly positive and/or negative, relative to their own range, but few experienced stereotypical cyclicity (PMS, Monday blues, full moon). About half the women whose prospective data met conservative criteria for PMS, met liberal criteria, or met neither criteria said they had PMS, and half in each group said they did not. 相似文献
137.
Timothy Williams 《亚里斯多德学会增刊》1999,73(1):182-203
The paper defends the intelligibility of unrestricted quantification. For any natural number n , 'There are at least n individuals' is logically true, when the quantifier is unrestricted. In response to the objection that such sentences should not count as logically true because existence is contingent, it is argued by consideration of cross-world counting principles that in the relevant sense of 'exist' existence is not contingent. A tentative extension of the upward Löwenheim–Skolem theorem to proper classes is used to argue that a sound and complete axiomatization of the logic of unrestricted universal quantification results from adding all sentences of the form 'There are at least n individuals' as axioms to a standard axiomatization of the first-order predicate calculus.
Of the many questions on which logic is neutral, one is usually supposed to be this: 'How many individuals are there?' On the alternative view defended below, truths about the number of individuals are logically true. They are not contingent logical truths, for it is not contingent what individuals there are. 相似文献
Of the many questions on which logic is neutral, one is usually supposed to be this: 'How many individuals are there?' On the alternative view defended below, truths about the number of individuals are logically true. They are not contingent logical truths, for it is not contingent what individuals there are. 相似文献
138.
Terrence T. Williams Robert M. Lambert Charles W. White 《Behavior research methods》1985,17(2):265-267
Blind readers were tested using two methods of reading text displayed by an Apple microcomputer. The first method employed an Optacon system, a device that displays tactile representations of single characters, and the second used an interactive single electronic braille cell that displayed grade 1 braille characters. The results demonstrated no difference in accuracy or reading speed between these two methods. Thus, the serial presentation of braille characters at a single position appears to be a viable method of information transfer between computers and braille readers. 相似文献
139.
140.
Rhys H. Williams 《Journal for the scientific study of religion》2013,52(2):239-257
American civil religion (ACR) burst on to the scholarly scene in 1967, and has been periodically revived as a source of analytic insight and normative hope since that time. It posited a universalist, prophetic, nonsectarian faith, referenced on the nation, that served as both a source of unity for the American people and a discursive resource for political leaders and protest movements. Using recent political events as illustrative cases, I argue that ACR is not only a universalist, prophetic creed, it is also an expression of tribal identity that ascribes a particular character and purpose to the American people. In particular, this “tribal” civil religion has an often‐unstated assumption about the inseparability of religion, race, and national identity—that is, white, Christian, and American. Recent events have disrupted those implicit connections, leading to a vociferous reemphasis of their centrality to the national story. I maintain that neither ACR, nor recent politics involving immigration and Barack Obama's presidency, can be understood fully without considering the religion‐race‐national identity nexus. 相似文献