Results 21 to 30 of about 165,929 (259)

Partial derivative of matrix functions with respect to a vector variable

Vietnam Journal of Mechanics, 2008
The partial derivatives of scalar functions and vector functions with respect to a vector variable are defined and used in dynamics of multibody systems.
Nguyen Van Khang
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Solving Parabolic Partial Delay Differential Equations Using The Explicit Method And Higher Order Differences

Journal of Kufa for Mathematics and Computer, 2013
In this paper we use the higher order differences for second order (derivative)  in solving  parabolic partial delay differential equations by using the explicit method and we get results are more closer to the exact values than the results which can ...
Amal Khalaf Haydar
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Analytical Solutions for the Nonlinear Partial Differential Equations Using the Conformable Triple Laplace Transform Decomposition Method

International Journal of Differential Equations, 2021
In this paper, a novel analytical method for solving nonlinear partial differential equations is studied. This method is known as triple Laplace transform decomposition method. This method is generalized in the sense of conformable derivative.
Shailesh A. Bhanotar, Mohammed K. A. Kaabar   +1 more
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Weight Function Method for computations of crack face displacements and stress intensity factors of center cracks [PDF]

Fracture and Structural Integrity, 2015
The weight function method provides a powerful and reliable tool for the determination of the stress intensity factor around the crack tip in a linearly elastic cracked solid subjected to arbitrary loading conditions.
Junling Fan, Dengke Dong, Li Chen, Xianmin Chen, Xinglin Guo   +4 more
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NUMERICAL MODELING OF HYDRODYNAMIC PROCESSES IN AQUIFERS

Современная наука и инновации, 2022
The article deals with development of a mathematical model of hydrodynamic processes in aquifers. The mathematical model of the object is represented as a system of differential equations in partial derivatives that can be solved by the explicit scheme ...
Maxim Alexandrovich Sixtus
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Partial Soft Derivative

Communications in Advanced Mathematical Sciences
The concept of soft derivative, introduced by Molodtsov in 1999, is one of the fundamental concepts in soft analysis. The handled paper defines partial soft derivative and studies some of its basic properties, such as the relation between partial soft ...
Serdar Enginoğlu, Burak Arslan
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Depth-Extrapolation-Based True-Amplitude Full-Wave-Equation Migration from Topography

Applied Sciences, 2021
The lack of an initial condition is one of the major challenges in full-wave-equation depth extrapolation. This initial condition is the vertical partial derivative of the surface wavefield and cannot be provided by the conventional seismic acquisition ...
Hao Liu, Xuewei Liu
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Partial Derivatives Estimation of Multivariate Variance Function in Heteroscedastic Model via Wavelet Method

Axioms
For derivative function estimation, conventional research only focuses on the derivative estimation of one-dimensional functions. This paper considers partial derivatives estimation of a multivariate variance function in a heteroscedastic model.
Junke Kou, Hao Zhang
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Multiparameter Estimation of PMSM Combining Mechanical and Electrical Models with Nonlinear Saturated Inductance and Voltage Fitting

CES Transactions on Electrical Machines and Systems
In this paper, a precise and computationally efficient method for estimating multiparameter of permanent magnet synchronous motors (PMSMs) is proposed.
Lupeng Yang, Yuting Lu, Guodong Feng, Yu Han   +3 more
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Dominating polynomial in power series expansion for analytic functions in a complete Reinhardt domain

Математичні Студії
We generalized some criteria of boundedness of $\mathbf{L}$-index in joint variables for analytic functions in a complete multiple circular domain, where $\mathbf{L}(z)=(l_1(z_1,z_2,\ldots,z_n),$ $l_{2}(z_1,z_2,\ldots,z_n),$ $\ldots,$ $l_{n}(z_1,z_2 ...
A. I. Bandura, T.M. Salo
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