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2022, Studies in Logic
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13 pages
1 file
The Development of Logical Exceptionalism Abstract: The main viewpoints of logical exceptionalism are that logic is exceptional with respect to all other sciences, including natural science, social science and humanities, because logical propositions say nothing about the world, and are true or false based on the meanings of logical constants; that logical truth is analytical, a prior and necessary, so it is not revisable; and that logical laws are normative for how to think correctly. This article takes Leibniz, Hume, Kant, Frege, Wittgenstein and Ayer as the representative figures of logical exceptionalism, outlines their viewpoints and arguments about logic, and exposes the internal difficulties of their positions. Key Words: logical exceptionalism, Leibniz, Hume, Kant, Frege, Wittgenstein, Ayer
Advances in Psychology, 2015
Background: The purpose of this study was to determine a factor structure for the immersed tendency questionnaire (ITQ) under the background of Chinese culture. The 14 items comprising the ITQ originally derived from Witmer and Michael's immersed tendency questionnaire (1998). Methods: Data from 360 university students were subjected to exploratory factor analysis (EFA) and 440 university students were subjected to confirmatory factor analysis (CFA). Results: CFA confirmed that ITQ was a 4-factor structure. EFA explained 50.65% of the variance through a 19-item, 4-factor structure (game immersed, state involvement, focus, and emotional involvement). Adding the total score, Cronbach's alpha coefficients were 0.512 -0.789. ITQ had satisfying structure validity (χ 2 /df = 2.736, NNFI = 0.91, IFI = 0.93, CFI = 0.93, RMSEA = 0.064) and criterion validity (r = 0.575, p < 0.001). Conclusions: The revised ITQ had a satisfying structure validity and reliability; the 4-factor had a significantly better fit, and could be used in the related fields of research.
The convexity and logarithmic convexity of the arithmetic sequence are studied. And then by using methods on the theory of majorization, some arithmetic sequence inequalities are proved.
2013
笔者一向认为贸易理论由一系列模型构成[ 作者的这一观点得自Tjalling Koopmans(1957)的“Three Essays on the State of Economic Science(三篇关于经济科学状况的文章)”,该文献在今日仍颇具价值。Koopman使用了“模型序列(sequence of models)”的术语。]。由于贸易背后存在众多的潜在原因和动机,也许最富有成效的研究方法是采用一系列模型且每次只取其中若干加以分析,而非建立一个无所不包的试图囊括贸易的所有可能成因模型。另外一种极端的方法则要求为每一个行业、每一对贸易伙伴国甚至每一个跨国公司都专门造一个模型。这时,理论变成了案例分析,我们无法得到任何具有一般性的结论。科学合理的目标也许应该是一套经过谨慎选择且数量有限的模型,其中元素的个数介于1和1000之间。译者单位:厦门大学国际经济与贸易系(361005
北京工业大学学报, 2017
为有效地获取滚珠丝杠副精度寿命特征,利用滚珠丝杠副磨损特征建立加速退化模型,并且根据设计的试验装置和试验过程的摩擦力矩值变化情况,采用参数估计方法进行退化数据的统计分析,获得不同应力水平下的滚珠丝杠副加速退化参数模型.同时,根据不同应力条件下实测的滚珠丝杠副摩擦力矩退化数据,计算出滚珠丝杠副定位反向变动量,为滚珠丝杠副的定位精度退化提供一种新的评价方法.建立的滚珠丝杠副加速退化模型针对其磨损进程极为缓慢的特性,利用该退化方法能较准确地推算出滚珠丝杠副精度寿命,能节约滚珠丝杠副试验费用、试验时间和指导滚珠丝杠副的设计.
SCIENTIA SINICA Mathematica, 2018
Liao [9] 将鞅表示推广到齐性空间, 并以此得到不变 Markov 过程的一个斜乘积 (skew-product) 分解. 本文将试图对以上内容作简洁而系统的论述. 由于篇幅有限, 我们对所述结果只辅以简单说明和 部分证明, 更详细讨论可见所引参考文献. 许多有关结果也不能涉及. 例如, 局部紧群上的概率测度在 文献中有广泛深入的讨论, 读者可参见 Heyer 的经典专著 [10], 部分后来的发展可参见文献 [11]. 其中 无穷可分概率测度嵌入卷积半群的问题 (the embedding problem) 参见文献 [12, 13]. 有关群表示和群 上的 Fourier 变换在概率和统计里的应用可参见文献 [14]. 用群表示和 Fourier 分析的观点来讨论紧 Lie 群上的概率测度和过程, 可参见文献 [15-17] 和 Applebaum 的新书 [18]. 半单 Lie 群和对称空间中 Lévy 过程的极限性质可参见文献 [19] 及该书中所引文献, 以及文献 [20].
In this paper we study Euler's dierence table and its derivate over symmetric group. We will give some combinatorial interpretations to the relations defining them as well as their generating functions. Resume. Nousetudions dans ce papier la di´ erence table d'Euler et sa derivee sur le groupe groupe symetrique. Nous donnerons des interpretations combi- natoires de leurs relations de recurrence ainsi que leurs fonctions generatrices.
2006
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