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符号计算与数值计算及其应用
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作者 朱志辉 《广州师院学报(自然科学版)》 1993年第1期81-86,共6页
符号计算与数值计算是科学计算的两大类,它们有各自的优点,把两者结合起来,其潜在利益是十分大的。文中举出一些实例说明符号计算和数值计算在科研与工程计算中的作用,提出设计一个符号计算与数值计算的混合软件,并指出符号-数值... 符号计算与数值计算是科学计算的两大类,它们有各自的优点,把两者结合起来,其潜在利益是十分大的。文中举出一些实例说明符号计算和数值计算在科研与工程计算中的作用,提出设计一个符号计算与数值计算的混合软件,并指出符号-数值计算将使科学计算这个发展极快的领域发生巨大变革。 展开更多
关键词 符号计算 数值计算 混合软件包 科学技术 符号-数学计算 计算数学
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Function Projective Synchronization of Discrete-Time Chaotic and Hyperchaotic Systems Using Backstepping Method
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作者 JIN Yi-Liang LI Kin CHEN Yong 《Communications in Theoretical Physics》 SCIE CAS CSCD 2008年第7期111-116,共6页
In this paper, a function projective synchronization scheme is developed to investigate the function projective synchronization between the discrete-time driven chaotic system and the discrete-time response chaotic sy... In this paper, a function projective synchronization scheme is developed to investigate the function projective synchronization between the discrete-time driven chaotic system and the discrete-time response chaotic system. With the aid of symbolic-numeric computation, we use the scheme to study the function projective synchronization between 2D Lorenz discrete-time system and Hdnon discrete-time system, as well as that between 3D discrete-time hyperchaotic system and Henon-like map via three scalar controllers, respectively. Moreover numerical simulations are used to verify the effectiveness of the proposed scheme. 展开更多
关键词 discrete-time chaotic system discrete-time chaotic map symbolic-numeric computation function projective synchronization backstepping design
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Symbolic Computations and Exact and Explicit Solutions of Some Nonlinear Evolution Equations in Mathematical Physics 被引量:1
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作者 Turgut zis Imail Aslan 《Communications in Theoretical Physics》 SCIE CAS CSCD 2009年第4期577-580,共4页
With the aid of symbolic computation system Mathematica, several explicit solutions for Fisher's equation and CKdV equation are constructed by utilizing an auxiliary equation method, the so called G′/G-expansion met... With the aid of symbolic computation system Mathematica, several explicit solutions for Fisher's equation and CKdV equation are constructed by utilizing an auxiliary equation method, the so called G′/G-expansion method, where the new and more general forms of solutions are also constructed. When the parameters are taken as special values, the previously known solutions are recovered. 展开更多
关键词 auxiliary equation method G′/G-expansion method traveling wave solutions fisher equation CKdV equation exact solution
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Mathematical Modeling and Computational Semiotics: Methodological Approach to Formalization of Semiotic Concepts
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作者 Silvia Regina dos Santos Coelho Ricardo Matos Chaim 《Journal of Mechanics Engineering and Automation》 2014年第12期981-1000,共20页
This paper aims to conduct a research on the state of the art of artificial intelligence techniques to investigate the relationships between cognitive actions addressed in steps of mathematical modeling and computatio... This paper aims to conduct a research on the state of the art of artificial intelligence techniques to investigate the relationships between cognitive actions addressed in steps of mathematical modeling and computational semiotics activities. It also briefly reviews the main techniques of artificial intelligence, with particular emphasis on intelligent systems techniques. Such analysis uses semiotic concepts in order to identify the use of new techniques for modeling intelligent systems through the integrated use of mathematical and computational tools. At last, once understood that semiotics can bring contributions to the study of intelligent systems, a methodology for modeling computational semiotics based on the semiotic concepts formalization extracted from the semiotic theory of Charles Sanders Peiree is proposed. 展开更多
关键词 Intelligent systems mathematical modeling computational semiotics.
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A New Expanded Method for Solving Nonlinear Differential-difference Equation 被引量:1
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作者 张善卿 《Journal of Shanghai Jiaotong university(Science)》 EI 2008年第4期509-512,共4页
A new expanded approach is presented to find exact solutions of nonlinear differential-difference equations. As its application, the soliton solutions and periodic solutions of a lattice equation are obtained.
关键词 differential-difference equation exact solution symbolic computation
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OBTAINING EXACT INTERPOLATION MULTIVARIATE POLYNOMIAL BY APPROXIMATION
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作者 Yong FENG Xiaolin QIN +1 位作者 Jingzhong ZHANG Xun YUAN 《Journal of Systems Science & Complexity》 SCIE EI CSCD 2011年第4期803-815,共13页
In some fields such as Mathematics Mechanization, automated reasoning and Trustworthy Computing, etc., exact results are needed. Symbolic computations are used to obtain the exact results. Symbolic computations are of... In some fields such as Mathematics Mechanization, automated reasoning and Trustworthy Computing, etc., exact results are needed. Symbolic computations are used to obtain the exact results. Symbolic computations are of high complexity. In order to improve the situation, exact interpolating methods are often proposed for the exact results and approximate interpolating methods for the ap- proximate ones. In this paper, the authors study how to obtain exact interpolation polynomial with rational coefficients by approximate interpolating methods. 展开更多
关键词 Continued fraction multivariate interpolation numerical approximate computation symbolic-numerical computation Vandermonde determinant.
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