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The Evolution of COVID-19 Transmission with Superspreaders Class under Classical and Caputo Piecewise Operators: Real Data Perspective from India, France, and Italy

Shabir Ahmad, Salma Haque, Khalid Ali Khan, Nabil Mlaiki • Fractal and Fractional (2023)

In this study, we analyze the transmission of the COVID-19 model by using a piecewise operator in the classical Caputo sense. The existence along with the uniqueness of the solution of the COVID-19 model under a piecewise derivative is pres...

DOAJ Open Access (DOAJ) DOI: 10.3390/fractalfract7070501

Effects of compression running pants and treadmill running stages on knee proprioception and fatigue-related physiological responses in half-marathon runners

Lin Chang, Silin Fu, Jianghua Li, Sam Wu et al. • Frontiers in Physiology (2022)

Background: Knee injury is common in half-marathon runners, however, the effect of compression running pants on fatigue and knee proprioception remains unclear.Objectives: The study aims to investigate whether wearing compression running pa...

DOAJ Open Access (DOAJ) DOI: 10.3389/fphys.2022.1035424

Algae-Mamba: A Spatially Variable Mamba for Algae Extraction From Remote Sensing Images

Yaoteng Zhang, Shuaipeng Wang, Yanlong Chen, Shiqing Wei et al. • IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing (2025)

To maintain marine ecosystem health, effective algae monitoring is essential. Traditional threshold-based methods and standard machine learning techniques often fall short in accurately and automatically distinguishing algae types. This stu...

DOAJ Open Access (DOAJ) DOI: 10.1109/JSTARS.2025.3571988

Sensitivity Analysis and Uncertainty Quantification of Nanoparticle Deposition from Tongue Morphological Variations

Tiancheng Yang, Xiuhua Si, Jinxiang Xi • Life (2024)

The human tongue has highly variable morphology. Its role in regulating respiratory flows and deposition of inhaled aerosols remains unclear. The objective of this study was to quantify the uncertainty of nanoparticle deposition from the va...

DOAJ Open Access (DOAJ) DOI: 10.3390/life14030406

The Numerical Solution of Fractional Parabolic Partial Integro-Differential Eequations by Gaussian and Inverse Multiquadric Radial Basis Functions

F. S. Aghaei Maybodi, M. H. Heydari, F. M. Maalek Ghaeini, M. H. Akrami • پژوهش‌های ریاضی (2021)

Introduction Many mathematical formulations of physical phenomena contain integro-differential equations. These equations arise in fluid dynamics, biological models, chemical kinetics, ecology, control theory of financial mathematics, aeros...

DOAJ Open Access (DOAJ)

Computational Adaptive Optics for HAR Hybrid Trench Array Topography Measurement by Utilizing Coherence Scanning Interferometry

Wenyou Qiao, Zhishan Gao, Qun Yuan, Lu Chen et al. • Sensors (2025)

High aspect ratio (HAR) sample-induced aberrations seriously affect the topography measurement for the bottom of the microstructure by coherence scanning interferometry (CSI). Previous research proposed an aberration compensating method usi...

DOAJ Open Access (DOAJ) DOI: 10.3390/s25134085

Tridiagonal matrices representations of generalized bivariate complex polynomials

K. L. Verma • Journal of Innovative Applied Mathematics and Computational Sciences (2026)

This paper introduces a closed-form expression for generalized bivariate complex polynomials using a tridiagonal determinant in symbolic form. Subsequences with even and odd indices are also represented as tridiagonal determinants. Furtherm...

DOAJ Open Access (DOAJ) DOI: 10.58205/jiamcs.v6i1.1958

Extended Fibonacci numbers and polynomials with probability applications

Demetrios L. Antzoulakos • International Journal of Mathematics and Mathematical Sciences (2004)

The extended Fibonacci sequence of numbers and polynomials is introduced and studied. The generating function, recurrence relations, an expansion in terms of multinomial coefficients, and several properties of the extended Fibonacci numbers...

DOAJ Open Access (DOAJ) DOI: 10.1155/S016117120440458X

Faktorisasi Polinomial Square-Free dan bukan Square-Free atas Lapangan Hingga Zp

Juli Loisiana Butar-butar, Ferdinand Sinuhaji • JTAM (Jurnal Teori dan Aplikasi Matematika) (2019)

Abstrak: Faktorisasi polinomial merupakan suatu proses penguraian suatu  polinomial berderajat n menjadi polinomial-polinomial lain yang berderajat lebih kecil dari n.  Faktorisasi polinomial atas lapangan hingga  merupakan suatu proses pen...

DOAJ Open Access (DOAJ) DOI: 10.31764/jtam.v3i2.1079

Mathematical Methods for Physicists

George B. Arfken, Albert A. Mullin • American Journal of Physics (1967)

Mathematical Methods for Physicists, Third Edition provides an advanced undergraduate and beginning graduate study in physical science, focusing on the mathematics of theoretical physics. This edition includes sections on the non-Cartesian ...

OPENALEX DOI: https://doi.org/10.1119/1.1973757

Bilateral generating functions for a new class of generalized Legendre polynominals

A. N. Srivastava, S. D. Singh, S. N. Singh • International Journal of Mathematics and Mathematical Sciences (1980)

Recently Chatterjea (1) has proved a theorem to deduce a bilateral generating function for the Ultraspherical polynomials. In the present paper an attempt has been made to give a general version of Chatterjea's theorem. Finally, the theorem...

DOAJ Open Access (DOAJ) DOI: 10.1155/S0161171280000221

Determinantal Sieving

Eduard Eiben, Tomohiro Koana, Magnus Wahlström • TheoretiCS (2025)

We introduce determinantal sieving, a new, remarkably powerful tool in the toolbox of algebraic FPT algorithms. Given a polynomial $P(X)$ on a set of variables $X=\{x_1,\ldots,x_n\}$ and a linear matroid $M=(X,\mathcal{I})$ of rank $k$, bot...

DOAJ Open Access (DOAJ) DOI: 10.46298/theoretics.25.21

Matrix Mathematics

Dennis S. Bernstein • Princeton University Press eBooks (2009)

When first published in 2005, Matrix Mathematics quickly became the essential reference book for users of matrices in all branches of engineering, science, and applied mathematics. In this fully updated and expanded edition, the author brin...

OPENALEX DOI: https://doi.org/10.1515/9781400833344

ODE, regression, and ANN models for energy forecasting: Egypt as a study case

Mohey Eldeen H. H. Ali, Ahmed F. Tayel, Hossam M. Ezzat, Hesham A. Elkaranshawy • Alexandria Engineering Journal (2025)

Energy plays a crucial role in national development, influencing critical sectors such as industry, agriculture, healthcare, and education. Accurate energy consumption prediction is essential for efficient energy management, helping prevent...

DOAJ Open Access (DOAJ) DOI: 10.1016/j.aej.2025.04.037

Strengthening Crypto-1 Cipher Against Algebraic Attacks

Farah Afianti, Ari M. Barmawi • Journal of ICT Research and Applications (2015)

In the last few years, several studies addressed the problem of data security in Mifare Classic. One of its weaknesses is the low random number quality. This causes SAT solver attacks to have lower complexity. In order to strengthen Crypto-...

DOAJ Open Access (DOAJ) DOI: 10.5614/itbj.ict.res.appl.2015.9.1.5

Design, analysis, and experimental research on installation robot for hanging column

Xiaoqiang Wang, Xijing Zhu, Xiang Li, Jingyu Yang • Scientific Reports (2026)

Abstract To address the challenges of labor-intensive operations, high safety risks, and low operational efficiency in the installation of hanging columns within tunnels, we propose a robotics-based mechanized and automated solution. First,...

DOAJ Open Access (DOAJ) DOI: 10.1038/s41598-026-54684-w