首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   1011篇
  免费   87篇
  国内免费   90篇
  2023年   19篇
  2022年   28篇
  2021年   44篇
  2020年   50篇
  2019年   48篇
  2018年   63篇
  2017年   53篇
  2016年   63篇
  2015年   27篇
  2014年   32篇
  2013年   108篇
  2012年   43篇
  2011年   51篇
  2010年   47篇
  2009年   29篇
  2008年   45篇
  2007年   48篇
  2006年   51篇
  2005年   36篇
  2004年   35篇
  2003年   14篇
  2002年   17篇
  2001年   11篇
  2000年   13篇
  1999年   5篇
  1997年   11篇
  1995年   5篇
  1994年   6篇
  1993年   4篇
  1992年   5篇
  1990年   9篇
  1989年   6篇
  1987年   4篇
  1986年   7篇
  1983年   9篇
  1982年   6篇
  1981年   10篇
  1975年   4篇
  1974年   5篇
  1973年   7篇
  1971年   8篇
  1969年   10篇
  1968年   6篇
  1967年   5篇
  1964年   4篇
  1961年   5篇
  1960年   4篇
  1958年   12篇
  1955年   6篇
  1953年   6篇
排序方式: 共有1188条查询结果,搜索用时 15 毫秒
11.
12.
Competition is an important force behind evolution in present-day ecological conditions, its intensity varying according to the organisms' expectations vis-à-vis resources available. On the other hand, the role of mutation in the evolutionary process can hardly be underestimated: Leading to the change of the preconsciously functioning archetype, mutation makes it impossible for the ego to realize its image. This is a consequence of the clash between the mutated, preconsciously functioning archetype and the system of ethical and moral norms functioning in the collective superego of a given population group. The type of mutation that results from the accelerated pace of evolution can be viewed as a continuity in the development of an organism's behavior. The preconsciously functioning archetype, resulting from these mutations, contains impulses and predispositions that differ markedly from the impulses and predispositions functioning in the genetically determined "pattern of behavior." In a situation where anxiety results from the inhibition of impulses and dispositions, hostility reactions are likely to occur. In its turn, reactive hostility can induce anxiety, thus creating a reaction cycle. Underlying this mechanism is the mutated, preconsciously functioning archetype, which itself is a result of the development of civilization in our contemporary world.  相似文献   
13.
Kripke semantics for knowledge representation logics   总被引:3,自引:0,他引:3  
This article provides an overview of development of Kripke semantics for logics determined by information systems. The proposals are made to extend the standard Kripke structures to the structures based on information systems. The underlying logics are defined and problems of their axiomatization are discussed. Several open problems connected with the logics are formulated. Logical aspects of incompleteness of information provided by information systems are considered.  相似文献   
14.
Verisimilitude based on concept analysis   总被引:1,自引:0,他引:1  
In the paper ordering relations for comparison of verisimilitude of theories are introduced and discussed. The relations refer to semantic analysis of the results of theories, in particular to analysis of concepts the theories deal with.  相似文献   
15.
词义赋值的模糊统计分析   总被引:15,自引:4,他引:11  
马谋超 《心理学报》1990,23(1):53-59
本工作采用了一种称之为区间统计的模糊统计方法,对三个维度上的量词或分类词作了经验的赋值工作。它们分别涉及差异量词、及完好性和肯定性的分类词。差别量词有‘无’,‘几乎无’,‘较小’,‘中’,‘较大’,‘很大’,‘极大’。完好性分类词有‘劣’,‘差’,‘可’,‘良’,‘优’。有关肯定性的有‘少许’,‘基本’,‘坚决’。文中列出了若干统计的指数。它们相应于每个词义的模糊集隶属函数,心理量表值和模糊度。从所得结果中可以表征,所有给定的语词,除极个别外,都属模糊概念。还可看到:在它们之间有着严格的序关系。在心理量表上,相邻的有序词义之间的距离是不等的,而且各自都有不同的模糊度。  相似文献   
16.
理解模糊概念的动态特征   总被引:3,自引:0,他引:3  
本文探讨了不同场合下人脑理解模糊概念(量词、修饰词)的动态特点,并且考察了不同赋值区间(论域)、比较级的基数、上下关联(Context)等变量对理解给定的模糊概念的影响,特别考察了上述问题上的年龄差异。  相似文献   
17.
Studies in East European Thought -  相似文献   
18.
19.
Book reviews     
Science as Salvation: a Modern Myth and its Meaning, Mary Midgley, 1994. London, Routledge x +256pp., Hb 04 15062713, £35; Pb 04 15107733, £8.99

Philosophical Naturalism, David Papineau, 1993 Oxford, Basil Blackwell xii +219pp., Hb 0631189025, £40; Pb 0631189033, £14.99

F. H. Bradley, Writings on Logic and Metaphysics, James W. Allard & Guy Stock (Eds), 1994. Oxford, Clarendon Press xv+357pp, Hb 0–198–24445–2, £40.00; Pb 0–198–24438‐X, £14.95

Invariance and Heuristics: Essays in Honour of Heinz Post, Steven French & Harmke Kamminga (Eds), 1993 Boston Studies in the Philosophy of Science, Vol. 148 Kluwer Academic Publishers, Dordrecht

Beyond Reason: Essays on the Philosophy of Paul Feyerabend, GONZALO MUNÉVAR (Ed.), 1991. Dordrecht, Kluwer Academic Publishers xxi + 535pp., hb, ISBN 0–7923–1272–4, £104.20

World Changes: Thomas Kuhn and the Nature of Science, Paul Horwich (Ed.), 1993. Cambridge, MA, Bradford Books/MIT Press vi + 356pp., pb, ISBN 0262581388, £14.95

Realism Rescued: How Scientific Progress is Possible, Jerold L. Aronson, Rom Harré & Eileen Cornell Way, 1994 London, Duckworth vii +213pp., Hb 0715624768, £30.00

Scientific Nihilism: On the Loss and Recovery of Physical Explanation, Daniel Athearn, 1994. State University of New York Press, Albany ix + 387pp., Hb ISBN 0–7914–1807–3, £52

Theism, Atheism, and Big Bang Cosmology, William Lane Craig & Quentin Smith, 1993. Oxford, Clarendon Press x +342pp., Hb 0198263481, £35; Pb 019826383X, £13.95  相似文献   

20.
There are exactly two nonfinitely axiomatizable algebraic matrices with one binary connective o such thatx(yz) is a tautology of . This answers a question asked by W. Rautenberg in [2], P. Wojtylak in [8] and W. Dziobiak in [1]. Since every 2-element matrix can be finitely axiomatized ([3]), the matrices presented here are of the smallest possible size and in some sense are the simplest possible.Presented byWolfgang Rautenberg  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号