Results 71 to 80 of about 320 (204)

Two reliable computational methods pertaining to steady state substrate concentration of an immobilized enzyme system

Alexandria Engineering Journal, 2018
A mathematical model of an immobilized enzyme system with Michaelis-Menten mechanism for an irreversible reaction is discussed. The model is developed on the basis of diffusion equations containing a nonlinear term related to Michaelis-Menten (M-M ...
M. Salai Mathi Selvi, G. Hariharan, K. Kannan, M.H. Heydari   +3 more
doaj   +1 more source

Rethinking Collinearity in Self‐Organizing Maps: Evidence From Geophysical Data Classification

Journal of Geophysical Research: Machine Learning and Computation, Volume 3, Issue 2, April 2026.
Abstract This study examines the impact of collinearity on unsupervised machine learning algorithms (UMLAs), specifically Self‐Organizing Maps (SOMs), for detecting lithological boundaries in geophysical data. Using a multi‐scale experimental framework that includes bivariate isotropic clusters, geologically complex Noddy simulations, and real‐world ...
Limin Xu, Leonardo Feltrin, Eleanor C. R. Green   +2 more
wiley   +1 more source

The Simultaneous Interpolation of Target Radar Cross Section in Both the Spatial and Frequency Domains by Means of Legendre Wavelets Model-Based Parameter Estimation

International Journal of Aerospace Engineering, 2015
The understanding of the target radar cross section (RCS) is significant for target identification and for radar designing and optimization. In this paper, a numerical algorithm for calculating target RCS is presented which is based on Legendre wavelet ...
Yongqiang Yang, Yunpeng Ma, Lifeng Wang
doaj   +1 more source

Comparative Multi‐Marker Environmental DNA Metabarcoding of Marine Metazoan Communities: Water vs. Sediment

Molecular Ecology Resources, Volume 26, Issue 3, April 2026.
ABSTRACT This study investigates the metazoan biodiversity in the Southern Adriatic Sea using environmental DNA (eDNA) metabarcoding. Sediment and adjacent water samples were collected from three sites (one pristine, two impacted by human activities) at three distances from the coast across two seasons.
Alice Tagliabue, Giulia Furfaro, Alberto Pallavicini, Francesco Martino, Lorenzo Zane, Eleonora Sattin, Giorgio Valle, Stefano Piraino, Xavier Turon   +8 more
wiley   +1 more source

Trait‐Based Biomonitoring Using eDNA Metabarcoding to Assess Anthropogenic Disturbances on Freshwater Fish Communities

Molecular Ecology Resources, Volume 26, Issue 3, April 2026.
ABSTRACT Various anthropogenic disturbances affect the succession of aquatic habitats along dendritic river networks. Bioindicator taxa, such as fish, can be used to assess the effects of these disturbances on habitat quality. Environmental DNA (eDNA) metabarcoding offers a novel approach to complement traditional sampling and analysis of bioindicator ...
Olivier Morissette, Guillaume Côté, Marc‐Antoine Couillard, Rémy Pouliot, Louis Bernatchez   +4 more
wiley   +1 more source

A numerical study on fractional order financial system with chaotic and Lyapunov stability analysis

Results in Physics
In the last few decades, academic research has focused more on financial problems and poverty levels. These are among the two major challenges of the modern world today. To understand the challenge of financial crisis and poverty in societies. This paper
Khushbu Agrawal, Sunil Kumar, Badr S.T. Alkahtani, Sara S. Alzaid   +3 more
doaj   +1 more source

A New Efficient Method for the Numerical Solution of Linear Time-Dependent Partial Differential Equations

Axioms, 2018
This paper presents a new efficient method for the numerical solution of a linear time-dependent partial differential equation. The proposed technique includes the collocation method with Legendre wavelets for spatial discretization and the three-step ...
Mina Torabi, Mohammad-Mehdi Hosseini
doaj   +1 more source

Expansion of the Phenotypic and Genotypic Spectrum for PRKAR1B ‐Related Marbach–Schaaf Neurodevelopmental Syndrome: A Case Series

Clinical Genetics, Volume 109, Issue 4, Page 679-696, April 2026.
Comprehensive clinical description of 12 subjects with pathogenic PRKAR1B variants, including two heterozygous deletions supporting haploinsufficiency as a possible mechanism of disease, providing valuable insight into the pathophysiology of MASNS and setting a framework upon which to design future mechanistic studies of PKA signaling in brain ...
Sebastian Burkart, Tarik Guzeloglu, Ana R. Soares, Irene Valenzuela, Eduardo F. Tizzano, David Gómez‐Andres, Laurent Pasquier, Marine Legendre, Camille Berges, Julien Thevenon, Marjolaine Gauthier, Caleb Heid, Elly Ranum, Joseph Shen, Michelle Frees, Michael W. Schmidtke, Caro Pilar, Christian P. Schaaf   +17 more
wiley   +1 more source

Legendre Wavelet Operational Matrix Method for Solution of Riccati Differential Equation [PDF]

International Journal of Mathematics and Mathematical Sciences, 2014
A Legendre wavelet operational matrix method (LWM) is presented for the solution of nonlinear fractional-order Riccati differential equations, having variety of applications in quantum chemistry and quantum mechanics. The fractional-order Riccati differential equations converted into a system of algebraic equations using Legendre wavelet operational ...
openaire   +3 more sources

Breaking Barriers in High‐Order Spectral Methods: The Intrinsic Matrix Approach

International Journal for Numerical Methods in Engineering, Volume 127, Issue 5, 15 March 2026.
ABSTRACT This paper introduces a unified framework in Hilbert spaces for applying high‐order differential operators in bounded domains using Chebyshev, Legendre, and Fourier spectral methods. By exploiting the banded structure of differentiation matrices and embedding boundary conditions directly into the operator through a scaling law relating ...
Osvaldo Guimarães, José R. C. Piqueira
wiley   +1 more source