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基于分数阶模式的高拱坝变形安全监控研究构想 被引量:3
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作者 杨光 顾昊 +3 位作者 刘尚蔚 包腾飞 孙锦 栾博文 《水利水电科技进展》 CSCD 北大核心 2022年第5期85-93,120,共10页
为科学监控服役过程中高拱坝的变形安全,基于高拱坝结构特性和服役特点,在分析分数阶元件模型、混凝土坝物理力学参数反演、混凝土坝变形安全监控发展动态的基础上,依据分数阶建模理论,提出了一种高拱坝变形安全监控研究思路与构想:围... 为科学监控服役过程中高拱坝的变形安全,基于高拱坝结构特性和服役特点,在分析分数阶元件模型、混凝土坝物理力学参数反演、混凝土坝变形安全监控发展动态的基础上,依据分数阶建模理论,提出了一种高拱坝变形安全监控研究思路与构想:围绕高拱坝变形性态分数阶数值模拟以及基于分数阶模式的单测点和测点群变形安全监控这两个互相关联的科学问题,沿着“分数阶元件模型→物理力学参数反演→单测点变形安全监控→测点群变形安全监控”的研究主线,遵循“基础到深入、简单到复杂、现象到本质、理论到应用、局部到整体、一维到多维”的原则开展研究。为实现研究构想,重点需攻克三维高应力状态下高拱坝加速流变效应分数阶元件模型、分数阶元件模型弹性和黏弹性物理力学参数反演,以及高拱坝时效变形分数阶分析模型这3个关键的科学技术问题。 展开更多
关键词 分数阶模式 高拱坝 变形性态 安全监控 数值模拟 参数反演
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Lie Symmetries,Conservation Laws and Explicit Solutions for Time Fractional Rosenau–Haynam Equation 被引量:2
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作者 Chun-Yan Qin Shou-Fu Tian +1 位作者 t Xiu-Bin Wang Tian-Tian Zhang 《Communications in Theoretical Physics》 SCIE CAS CSCD 2017年第2期157-165,共9页
Under investigation in this paper is the invariance properties of the time fractional Rosenau-Haynam equation, which can be used to describe the formation of patterns in liquid drops. By using the Lie group analysis m... Under investigation in this paper is the invariance properties of the time fractional Rosenau-Haynam equation, which can be used to describe the formation of patterns in liquid drops. By using the Lie group analysis method, the vector fields and symmetry reductions of the equation are derived, respectively. Moreover, based on the power series theory, a kind of explicit power series solutions for the equation are well constructed with a detailed derivation. Finally, by using the new conservation theorem, two kinds of conservation laws of the equation are well constructed with a detailed derivation. 展开更多
关键词 time fractional Rosenau–Haynam equation Lie symmetry conservation laws
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Uniformity Pattern of Asymmetric Fractional Factorials
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作者 QIN Hong WANG Zhenghong CHATTERJEE Kashinath 《Journal of Systems Science & Complexity》 SCIE EI CSCD 2016年第2期499-510,共12页
The objective of this paper is to discuss the issue of the projection uniformity of asymmetric fractional factorials.On the basis of Lee discrepancy,the authors define the projection Lee discrepancy to measure the uni... The objective of this paper is to discuss the issue of the projection uniformity of asymmetric fractional factorials.On the basis of Lee discrepancy,the authors define the projection Lee discrepancy to measure the uniformity for low-dimensional projection designs.Moreover,the concepts of uniformity pattern and minimum projection uniformity criterion are proposed,which can be used to assess and compare two and three mixed levels factorials.Statistical justification of uniformity pattern is also investigated. 展开更多
关键词 Lower bound minimum projection uniformity ORTHOGONALITY projection Lee discrepancy uniformity pattern.
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