Results 141 to 150 of about 89,376 (355)

XFT: An Extension of the Discrete Fractional Fourier Transform [PDF]

, 2009
Rafael G. Campos, J. Rico-Melgoza, Edgar Chávez   +2 more
openalex   +1 more source

A novel spectral framework for stochastic differential equations: leveraging shifted Vieta-Fibonacci polynomials

AIMS Mathematics
In this paper, we introduced a novel numerical approach for solving stochastic heat equations and multi-dimensional stochastic Poisson equations using shifted Vieta-Fibonacci polynomials (SVFPs), marking their first application in stochastic differential
Ahmed G. Khattab, D.A. Hammad, Mourad S. Semary, Emad A. Mohamed, Iram Malik, Aisha F. Fareed   +5 more
doaj   +1 more source

Image Encryption Based on Fourier-DNA Coding for Hyperchaotic Chen System, Chen-Based Binary Quantization S-Box, and Variable-Base Modulo Operation

IEEE Access
This research work extends the hyperchaotic 4D Chen system into the fractional-order domain to carry out image encryption over 3 stages. For the first encryption stage, the discrete Fourier transform (DFT) of the numerical solution of the fractional ...
Wassim Alexan, Dina El-Damak, Mohamed Gabr   +2 more
doaj   +1 more source

Environmentally Friendly Nanofiber Cellulose From Durian Rinds: A Sustainable Alternative Biomass Resource

Asia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT A novel, efficient, and eco‐friendly sustainable process has been developed for the extraction of cellulose nanofibers (CNF) from durian rinds. The method utilizes low‐molecular‐weight 2,2,6,6‐tetramethylpiperidine‐1‐oxyl (TEMPO) as an oxidation agent, in conjunction with sonication treatment, resulting in a significant reduction of processing
Nyoman Puspa Asri, Minarni Wartiningsih, Chintya Gunarto, Antonius Jimmy Widagdo, Yohannes Somawiharja, Yustia Wulandari Mirzayanti, Jia‐Ming Chern, Suryadi Ismadji   +7 more
wiley   +1 more source

Remarks on numerical approximation of Volterra integral equations by Walsh–Hadamard transform

Results in Applied Mathematics
Walsh functions form a piecewise-constant orthonormal basis that is particularly well-suited for digital computation and signal approximation. Nevertheless, the direct evaluation of Walsh transforms for discrete functions becomes computationally ...
Farrukh Mukhamedov, Ushangi Goginava, Akaki Goginava, James Wheeldon   +3 more
doaj   +1 more source

Efficient Dynamics: Reduced‐Order Modeling of the Time‐Dependent Schrödinger Equation

Advanced Physics Research, EarlyView.
Reduced‐order modeling (ROM) approaches for the time‐dependent Schrödinger equation are investigated, highlighting their ability to simulate quantum dynamics efficiently. Proper Orthogonal Decomposition, Dynamic Mode Decomposition, and Reduced Basis Methods are compared across canonical systems and extended to higher dimensions.
Kolade M. Owolabi
wiley   +1 more source

The discrete fractional Fourier transform

1999 IEEE International Conference on Acoustics, Speech, and Signal Processing. Proceedings. ICASSP99 (Cat. No.99CH36258), 1999
Ç. Candan, M. Kutay, H. Ozaktas
semanticscholar   +1 more source

A Guide to Bayesian Optimization in Bioprocess Engineering

Biotechnology and Bioengineering, EarlyView.
ABSTRACT Bayesian optimization has become widely popular across various experimental sciences due to its favorable attributes: it can handle noisy data, perform well with relatively small data sets, and provide adaptive suggestions for sequential experimentation.
Maximilian Siska, Emma Pajak, Katrin Rosenthal, Antonio del Rio Chanona, Eric von Lieres, Laura M. Helleckes   +5 more
wiley   +1 more source

A Novel Video Encryption and Decryption Scheme based on Discrete Wavelet Transform and Fractional Fourier Transform

, 2015
Vanchhit Goyal, Devesh Mishra, Ankit Agarwal   +2 more
openalex   +1 more source

An All‐in‐One Lignin‐Based Artificial Thylakoid Nanovesicle Via In‐Situ Confined Growth Strategy for High‐Efficient and Selectivity CO2 Photoreduction

Carbon Energy, EarlyView.
The low light/CO2 capture and slow dynamic transfer of photogenerated electrons hamper photocatalysts’ high activity and selectivity. Inspired by the chloroplast's photosynthesis mechanism, an all‐in‐one lignin‐based artificial thylakoid nanovesicle (AiO‐L‐ATN) is constructed using a confined growth strategy of lignin molecules. The performance of such
Hang Wang, Ganmao Su, Xianxian Lin, Yan Qing, Yiqiang Wu, Fuxiang Chu, Fuquan Xiong   +6 more
wiley   +1 more source