Results 71 to 80 of about 1,056,028 (181)

On Generalized Composite Fractional Derivative

open access: yesWalailak Journal of Science and Technology, 2014
In the present paper, we define a generalized composite fractional derivative and obtain results, which include the image of power function, Laplace transform and composition of Riemann-Liouville fractional integral with the generalized composite ...
Mridula GARG   +3 more
doaj   +1 more source

Derivative-free HS-DY-type method for solving nonlinear equations and image restoration

open access: yesHeliyon, 2020
A derivative-free conjugate gradient algorithm for solving nonlinear equations and image restoration is proposed. The conjugate gradient (CG) parameter of the proposed algorithm is a convex combination of Hestenes-Stiefel (HS) and Dai-Yuan (DY) type CG ...
Auwal Bala Abubakar   +3 more
doaj   +1 more source

On the semilocal convergence of derivative free methods for solving nonlinear equations

open access: yesJournal of Numerical Analysis and Approximation Theory, 2012
We introduce a Derivative Free Method (DFM) for solving nonlinear equations in a Banach space setting. We provide a semilocal convergence analysis for DFM using recurrence relations. Numerical examples validating our theoretical results are also provided
Ioannis K. Argyros, Hongmin Ren
doaj   +2 more sources

A Modified Three-Term Conjugate Descent Derivative-Free Method for Constrained Nonlinear Monotone Equations and Signal Reconstruction Problems

open access: yesMathematics
Iterative methods for solving constraint nonlinear monotone equations have been developed and improved by many researchers. The aim of this research is to present a modified three-term conjugate descent (TTCD) derivative-free method for constrained ...
Aliyu Yusuf   +2 more
doaj   +1 more source

Measurement of free water in foods by secondary derivative thermogravimetry

open access: yesCyTA - Journal of Food, 2018
The thermogravimetry (TGA) and derivative thermogravimetry (DTG) methods have been used to measure the free water in low-moisture foods. In this study, the 2nd derivative thermogravimetry (2nd DTG) method distinguished the free and bound water based on ...
Yubin Wang   +5 more
doaj   +1 more source

The Second-Order Shape Derivative of Kohn–Vogelius-Type Cost Functional Using the Boundary Differentiation Approach

open access: yesMathematics, 2014
A shape optimization method is used to study the exterior Bernoulli free boundaryproblem. We minimize the Kohn–Vogelius-type cost functional over a class of admissibledomains subject to two boundary value problems. The first-order shape derivative of the
Jerico B. Bacani, Gunther Peichl
doaj   +1 more source

Using regression trees for improving the efficiency of nonlinear programming solvers

open access: yesEngineering Science and Technology, an International Journal
Optimization plays a critical role in fields such as economics, engineering, and computational sciences, where finding the optimal values of decision variables is essential for the design of a product, production system, or service system.
Fulya Terzi   +2 more
doaj   +1 more source

unified approach to the construction of higher-order derivative-free iterative methods for solving systems of nonlinear equations

open access: yesProceedings of the Mongolian Academy of Sciences
In this article, we introduce a unified approach to constructing a higher-order derivative-free scheme based on the approximations of F'(zk)-1. A family of order  p=6,7 derivative-free method is proposed and compared to some well-known methods.
Tugal Zhanlav   +3 more
doaj   +1 more source

Impact of fractional and integer order derivatives on the (4+1)-dimensional fractional Davey–Stewartson–Kadomtsev–Petviashvili equation

open access: yesPartial Differential Equations in Applied Mathematics
In this study, the closed-form wave solutions of the (4+1)-dimensional fractional Davey–Stewartson–Kadomtsev–Petviashvili equation are investigated using the modified auxiliary equation method and the Jacobi elliptic function method. In the analysis, two
Adil Jhangeer   +3 more
doaj   +1 more source

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