Results 81 to 90 of about 15,025 (256)

Numerical quadrature methods for singular and nearly singular integrals

, 2001
This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.This thesis is concerned with the development, design, and analysis of simple and efficient numerical quadrature methods for integrals on finite intervals ...
Chunrungsikul, S., Chunrungsikul, Sumlearng   +1 more
core  

Cylindrical-sinc beam

, 2014
Propagation of diffracted beams in free space has already been identified. One possible solution is derived from the Helmholtz wave equation and this solution is named as cylindrical-sinc beam.
Bayraktar, Mert, Basdemir, HÜSNÜ DENİZ   +1 more
core   +1 more source

Spatial metrics in fire ecology: seeking consistency amidst complexity

Biological Reviews, EarlyView.
ABSTRACT Technological advances, including remote sensing, have led to a proliferation of metrics used in ecological studies to examine spatial patterns of fire regimes and their ecological effects. Researchers can use many different metrics to analyse spatial variation in both fire events and resulting fire regimes, including fire size, shape ...
Alexander R. Carey, Geoffrey J. Cary, Teigan Cremona, Hugh F. Davies, Brett P. Murphy, Sam C. Banks   +5 more
wiley   +1 more source

New Applications and Improvements of Sinc Functions for Solving a System of Fredholm Integral Equations

Axioms
This study introduces two novel methodologies for solving systems of Fredholm integral equations, with particular emphasis on second-kind equations. The first method integrates the Sinc-collocation technique with a newly developed singular exponential ...
Saeed Althubiti, Abdelaziz Mennouni
doaj   +1 more source

Solving partial differential equations using sinc methods

, 2008
Sinc methods, since their introduction, have shown great theoretical promise as highly accurate methods for a wide range of numerical tasks. They have proven to have exponential convergence for ordinary differential equations and partial differential ...
Bockelman, Brian Paul
core  

Glymphatic dysfunction couples with cortical excitation–inhibition imbalance in epilepsy: Evidence from Rasmussen encephalitis

Epilepsia, EarlyView.
Cong Fu et al. demonstrate that glymphatic system dysfunction is linked to enhanced inhibitory cortical activity using diffusion MRI and EEG. These findings highlight a mechanistic link between perivascular fluid dynamics and neuronal activity, suggesting a role for glymphatic function in maintaining cortical stability in epilepsy.
Cong Fu, Yujiao Yang, Pan Gong, Kun Lv, Yilin Liu, Chongyang Tang, Xiongfei Wang, Lixin Cai, Qingzhu Liu, Yuwu Jiang, Taoyun Ji, Guoming Luan   +11 more
wiley   +1 more source

Computing Eigenvalues of Discontinuous Sturm-Liouville Problems with Eigenparameter in All Boundary Conditions Using Hermite Approximation

Abstract and Applied Analysis, 2013
The eigenvalues of discontinuous Sturm-Liouville problems which contain an eigenparameter appearing linearly in two boundary conditions and an internal point of discontinuity are computed using the derivative sampling theorem and Hermite interpolations ...
M. M. Tharwat, A. H. Bhrawy, A. S. Alofi
doaj   +1 more source

Numerical exploration of pollutant transport using stochastic fractional diffusion and Karhunen-Loève expansion [PDF]

Iranian Journal of Numerical Analysis and Optimization
This study explores a fractional time-space stochastic diffusion equation for modeling pollutant concentration, incorporating Caputo fractional derivatives and fractional Laplacians to capture anomalous diffusion.
Zahra Moniri, Afshin Babaei, Behrouz Parsa Moghaddam   +2 more
doaj   +1 more source

Antibiotic Remodeling of the Gut Microbiota Impairs Host Resistance to Secondary Infection

iMetaMed, EarlyView.
Gut microbial dynamics induced by four antibiotics, revealed distinct taxonomic and functional shifts. Vancomycin‐perturbed bacteriomes were proven to promote pathogen resistance to antibiotic treatment. Metronidazole‐treated mice showed pronounced Salmonella translocation to hepatic tissue, and altered Enterococcus avium populations modulated host ...
Miaoyu Li, Ying Chen, Xi Chen, Weili Lu, Jie Liao, Jiaqi Wang, Qiwei Liu, Yanzi Chang, Zeping Xu, Yanye Tu, Yang Zhou, Jing Xue, Binbin Wang, Kang Chen, Keyun Cheng, Chunlai Zeng, Hong Li, Qing Shen   +17 more
wiley   +1 more source

Adaptive Windowed Sinc Filter for Image Interpolation

, 2023
In this thesis, an image interpolation scheme using an adaptive windowed sinc, which varies in length and frequency response guided by the Laplacian operator, is proposed to improve quality and accuracy.
Nguyen, Dang
core   +1 more source