Results 31 to 40 of about 118 (104)

Existence, Stability, and Data‐Driven Analysis of a Fractional‐Order Avian Influenza Model in Poultry Farms

Engineering Reports, Volume 8, Issue 3, March 2026.
We develop and analyze a fractional‐order avian influenza chicken model for chicken farms, providing existence, uniqueness, and stability results. With real Bangladesh farm data and 80% vaccine efficacy, numerical results show that combining vaccination and treatment can control disease spread by reducing the basic reproduction number below one ...
Muhammad Altaf Khan, Mahmoud H. DarAssi, Irfan Ahmad, Ebraheem Alzahrani, Nurulfiza Mat Isa   +4 more
wiley   +1 more source

Mating parabolic rational maps with Hecke groups

Proceedings of the London Mathematical Society, Volume 132, Issue 3, March 2026.
Abstract We prove that any degree d$d$ rational map having a parabolic fixed point of multiplier 1 with a fully invariant and simply connected immediate basin of attraction is mateable with the Hecke group Hd+1$\mathcal {H}_{d+1}$, with the mating realised by an algebraic correspondence.
Shaun Bullett, Luna Lomonaco, Mikhail Lyubich, Sabyasachi Mukherjee   +3 more
wiley   +1 more source

Unifying Hierarchical Sliding Mode Control and Control Barrier Function for Tilt Angle Constraint of a Ball‐Balancing Robot

IET Cyber-Systems and Robotics, Volume 8, Issue 1, January/December 2026.
ABSTRACT This paper presents a novel control methodology that combines control barrier functions (CBFs) and hierarchical sliding mode control (HSMC) for the ball‐balancing robot. The motivation arises from the need to achieve stable balancing and position tracking while guaranteeing physical safety under tilt angle constraints.
Thi Thuy Hang Nguyen, Duc Cuong Vu, Minh Duc Pham, Tung Lam Nguyen, Thi‐Van‐Anh Nguyen   +4 more
wiley   +1 more source

On shifts of periodic zeta-function in short intervals

Mathematical Modelling and Analysis
The periodic zeta-function $\zeta(s; a)$, $s = \sigma + it$, $a = \{a_m \in \mathbb{C} : m \in \mathbb{N}\}$, in the half-plane $\sigma > 1$ is defined by Dirichlet series with periodic coefficients $a_m$, and has the meromorphic continuation to the ...
Marius Grigaliūnas, Antanas Laurinčikas, Darius Šiaučiūnas   +2 more
doaj   +1 more source

A JOINT LIMIT THEOREM FOR PERIODIC HURWITZ ZETA-FUNCTIONS WITH ALGEBRAIC IRRATIONAL PARAMETERS

Mathematical Modelling and Analysis, 2013
In the paper, a joint limit theorem for weakly convergent probability measures in ℂ r for periodic Hurwitz zeta-functions with algebraic irrational parameters satisfying certain independence conditions is obtained.
Genienė, Danutė, Rimkevičienė, Audronė   +1 more
openaire   +3 more sources

An Adaptation Mechanism of Model Reference Adaptive System Based on Variable Structure Control for Online Parameter Estimation of IPMSM

IET Control Theory &Applications, Volume 20, Issue 1, January/December 2026.
ABSTRACT This study introduces stator currents‐based model reference adaptive system (MRAS) estimators that employ variable structured control (VSC) in the adaptation mechanism to enable the online estimation of stator resistance and permanent magnet (PM) flux in interior permanent magnet synchronous motors (IPMSMs).
Ertugrul Ates, Burak Tekgun, Murat Barut
wiley   +1 more source

Observer‐Based Active Fault‐Tolerant Sliding Mode Control for Fully‐Constrained CDPRs

IET Control Theory &Applications, Volume 20, Issue 1, January/December 2026.
An active fault‐tolerant sliding mode control strategy is developed for cable‐driven parallel robots. It uses real‐time fault estimation and sliding mode control to handle actuator faults and maintain robust tracking performance. ABSTRACT This study introduces an active fault‐tolerant sliding mode control (AFTSMC), designed explicitly for fully ...
Yasna Majdi, Hanie Marufkhani, Mohammad A. Khosravi   +2 more
wiley   +1 more source

Cyber‐Resilient MMC‐MTDC Stability via Robust Observer Design for Wind‐Integrated Grids

IET Generation, Transmission &Distribution, Volume 20, Issue 1, January/December 2026.
This paper proposes a stochastic stabilising control method, based on a Markov jump model (MJM), to comprehensively address stability challenges in modular multilevel converter‐based multi‐terminal direct current (MMC‐MTDC) systems due to communication network disturbances.
Mohsen Darabian, Abdeljelil Chammam, Marwea Hussien, M. K. Sharma, Nargiza Kuzieva, A. K. Kareem   +5 more
wiley   +1 more source

How Does Reverse‐Conformity Ambivalent Psychology Influence Rumor Spreading?

Discrete Dynamics in Nature and Society, Volume 2026, Issue 1, 2026.
In the age of social media, rumor dissemination brings serious negative impacts to society. It is important to explore the dissemination mechanism and management strategies to control rumor dissemination and reduce negative impacts. Considering the effect of reverse‐conformity ambivalent psychology on the rumor dissemination process, a novel dynamic ...
Jiaqi Zhang, Yanyuan Su, Zhengxin Yan, Yaming Zhang, Ahmed Ezzat Matouk   +4 more
wiley   +1 more source

Canonical heights, periods and the Hurwitz zeta function

61 ...
Andreasson, Rolf, Berman, Robert J.
openaire   +2 more sources