Results 1 to 10 of about 4,603 (177)

Solving nonlinear PDEs using the higher order Haar wavelet method on nonuniform and adaptive grids

Mathematical Modelling and Analysis, 2021
The higher order Haar wavelet method (HOHWM) is used with a nonuniform grid to solve nonlinear partial differential equations numerically. The Burgers’ equation, the Korteweg–de Vries equation, the modified Korteweg–de Vries equation and the sine–Gordon ...
Mart Ratas, Andrus Salupere, Jüri Majak
doaj   +1 more source

Solving Nonlinear Boundary Value Problems Using the Higher Order Haar Wavelet Method

Mathematics, 2021
The current study is focused on development and adaption of the higher order Haar wavelet method for solving nonlinear ordinary differential equations. The proposed approach is implemented on two sample problems—the Riccati and the Liénard equations. The
Mart Ratas, Jüri Majak, Andrus Salupere
doaj   +1 more source

A Data-Driven Framework for Small Hydroelectric Plant Prognosis Using Tsfresh and Machine Learning Survival Models

Sensors, 2022
Maintenance in small hydroelectric plants (SHPs) is essential for securing the expansion of clean energy sources and supplying the energy estimated to be required for the coming years.
Rodrigo Barbosa de Santis, Tiago Silveira Gontijo, Marcelo Azevedo Costa   +2 more
doaj   +1 more source

Numerical solutions of higher order boundary value problems via wavelet approach

Advances in Difference Equations, 2021
This paper presents a numerical scheme based on Haar wavelet for the solutions of higher order linear and nonlinear boundary value problems. In nonlinear cases, quasilinearization has been applied to deal with nonlinearity.
Shams Ul Arifeen, Sirajul Haq, Abdul Ghafoor, Asad Ullah, Poom Kumam, Parin Chaipanya   +5 more
doaj   +1 more source

Application of higher order Haar wavelet method for solving nonlinear evolution equations

Mathematical Modelling and Analysis, 2020
The recently introduced higher order Haar wavelet method is treated for solving evolution equations. The wave equation, the Burgers’ equations and the Korteweg-de Vries equation are considered as model problems.
Mart Ratas, Andrus Salupere
doaj   +1 more source

APPLICATION OF FOURIER TRANSFORM AND WAVELET DECOMPOSITION FOR DECODING THE CONTINUOUS AUTOMATIC LOCOMOTIVE SIGNALING CODE

Nauka ta progres transportu, 2017
Purpose. The existing system of automatic locomotive signaling (ALS) was developed at the end of the last century. This system uses the principle of a numerical code which is implemented on the basis of relay engineering, and therefore, it is exposed to ...
O. O. Hololobova, V. I. Havrilyuk
doaj   +1 more source

Efficient Representation of Head-Related Transfer Functions With Combination of Spherical Harmonics and Spherical Wavelets

IEEE Access, 2019
Recently, a modeling method for head-related transfer functions (HRTFs) in the spatial domain is proposed based on spherical wavelets. Because spherical wavelets are local functions on the sphere, HRTF local features can be efficiently represented by ...
Huaping Liu, Yong Fang, Qinghua Huang
doaj   +1 more source

Gradient response mechanism of carbon storage: Spatiotemporal analysis of economic-ecological dimensions based on hybrid machine learning

Open Geosciences
To explore the mechanisms of spatiotemporal changes in carbon storage (CS) and identify optimal pathways for achieving carbon neutrality. Existing studies have revealed the intrinsic relationship between land use changes and carbon storage.
Huang Xuankai, Jiang Xiaomin, Zhou Binjie, Yang Ling   +3 more
doaj   +1 more source

Evaluating urbanization effects on biomass density using a hybrid AI model: a case study. [PDF]

Sci Rep
İşler B.
europepmc   +1 more source

A novel hybrid mathematical deep learning technique for early warning of flashover in composite insulators. [PDF]

Sci Rep
Sezavar HR, Hasanzadeh S, Fahimi N.
europepmc   +1 more source