全文获取类型
收费全文 | 605篇 |
免费 | 63篇 |
国内免费 | 101篇 |
出版年
2024年 | 1篇 |
2023年 | 15篇 |
2022年 | 12篇 |
2021年 | 19篇 |
2020年 | 32篇 |
2019年 | 30篇 |
2018年 | 29篇 |
2017年 | 39篇 |
2016年 | 21篇 |
2015年 | 20篇 |
2014年 | 32篇 |
2013年 | 94篇 |
2012年 | 21篇 |
2011年 | 27篇 |
2010年 | 25篇 |
2009年 | 26篇 |
2008年 | 36篇 |
2007年 | 33篇 |
2006年 | 37篇 |
2005年 | 27篇 |
2004年 | 36篇 |
2003年 | 16篇 |
2002年 | 22篇 |
2001年 | 19篇 |
2000年 | 7篇 |
1999年 | 12篇 |
1998年 | 5篇 |
1997年 | 5篇 |
1996年 | 14篇 |
1995年 | 5篇 |
1994年 | 12篇 |
1993年 | 9篇 |
1992年 | 5篇 |
1991年 | 7篇 |
1990年 | 3篇 |
1989年 | 2篇 |
1988年 | 2篇 |
1986年 | 2篇 |
1983年 | 1篇 |
1982年 | 3篇 |
1981年 | 2篇 |
1980年 | 1篇 |
1979年 | 1篇 |
1978年 | 1篇 |
1976年 | 1篇 |
排序方式: 共有769条查询结果,搜索用时 0 毫秒
181.
许立人 《医学与哲学(人文社会医学版)》2007,28(1):67-68
《告别中医中药》一文的立论和方法是不可取的;《告别中医中药》一文的四点论据还需商榷,《告别中医中药》一文与党的中医政策和构建社会主义和谐社会有着不和谐的声音.中医和西医与其他自然科学一样在各自起作用的范围内存在和发展. 相似文献
182.
183.
184.
运动性心理疲劳问题的研究现状 总被引:11,自引:0,他引:11
通过对运动性心理疲劳概念和检测评价方法等问题的国内外研究现状及其局限性和不足进行的综述讨论,作者分析指出目前关于运动性心理疲劳问题的有关研究成果满足不了中国训练体系下训练实践的需要,提出有必要系统进行运动性心理疲劳问题的实证研究。就心理疲劳问题的研究方向和研究切入点,作者认为应综合开展运动性心理疲劳神经生理与心理机制的探索性研究。研究的主要切入点包括:(1)研究建立适合中国运动训练体制与环境的运动性心理疲劳概念,构建运动性心理疲劳概念模型;(2)基于此模型研究建立多维检测评价方法系统和运动性心理疲劳问卷。研究过程中要将神经生理方法与心理测量、行为观察等方法结合起来同步测量,在训练过程中开展纵向追踪与横向调查综合性的实证研究 相似文献
185.
We applied overlapping waves theory and microgenetic methods to examine how children improve their estimation proficiency, and in particular how they shift from reliance on immature to mature representations of numerical magnitude. We also tested the theoretical prediction that feedback on problems on which the discrepancy between two representations is greatest will cause the greatest representational change. Second graders who initially were assessed as relying on an immature representation were presented feedback that varied in degree of discrepancy between the predictions of the mature and immature representations. The most discrepant feedback produced the greatest representational change. The change was strikingly abrupt, often occurring after a single feedback trial, and impressively broad, affecting estimates over the entire range of numbers from 0 to 1000. The findings indicated that cognitive change can occur at the level of an entire representation, rather than always involving a sequence of local repairs. 相似文献
186.
Quinlan et al. [Quinlan, p., van der Mass, H., Jansen, B., Booij, O., & Rendell, M. (this issue). Re-thinking stages of cognitive development: An appraisal of connectionist models of the balance scale task. Cognition, doi:10.1016/j.cognition.2006.02.004] use Latent Class Analysis (LCA) to criticize a connectionist model of development on the balance-scale task, arguing that LCA shows that this model fails to capture a torque rule and exhibits rules that children do not. In this rejoinder we focus on the latter problem, noting the tendency of LCA to find small, unreliable, and difficult-to-interpret classes. This tendency is documented in network and synthetic simulations and in psychological research, and statistical reasons for finding such unreliable classes are discussed. We recommend that LCA should be used with care, and argue that its small and unreliable classes should be discounted. Further, we note that a preoccupation with diagnosing rules ignores important phenomena that rules do not account for. Finally, we conjecture that simple extensions of the network model should be able to achieve torque-rule performance. 相似文献
187.
Lawrence S. Moss 《Journal of Philosophical Logic》2007,36(6):605-640
This paper obtains the weak completeness and decidability results for standard systems of modal logic using models built from
formulas themselves. This line of work began with Fine (Notre Dame J. Form. Log. 16:229–237, 1975). There are two ways in
which our work advances on that paper: First, the definition of our models is mainly based on the relation Kozen and Parikh
used in their proof of the completeness of PDL, see (Theor. Comp. Sci. 113–118, 1981). The point is to develop a general model-construction
method based on this definition. We do this and thereby obtain the completeness of most of the standard modal systems, and
in addition apply the method to some other systems of interest. None of the results use filtration, but in our final section
we explore the connection. 相似文献
188.
以活动为认知对象的逻辑还没有系统地建立。本文我们采用半无穷方法、自代入方法、固定点方法和拟赋值方法全面建立这样的逻辑,从而研究知道一个活动的各种逻辑特性。根据这些方法,我们分别提出四类刻画知道一个活动的逻辑系统和相应的语义,然后证明这些系统相对各自的语义是可靠和完全的。 相似文献
189.
190.
Rocco Gangle 《Zygon》2007,42(1):223-240
Stuart Kauffman's proposal in Investigations to ground a “general biology” in the laws of self‐organization governing systems of autonomous agents runs up against the methodological problem of how to integrate formal mathematical with semantic and semiotic approaches to the study of evolutionary development. Gilles Deleuze's concept of the virtual and C. S. Peirce's system of existential graphs provide a theoretical framework and practical art for answering this problem of method by modeling the creative event of collective self‐organization as both represented and practiced in the scientific community. 相似文献