Results 51 to 60 of about 5,624,176 (134)
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 +4 more
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Canonical heights, periods and the Hurwitz zeta function
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Andreasson, Rolf, Berman, Robert J.
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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 +3 more
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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 +4 more
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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
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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 +2 more
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Applicable Analysis and Discrete Mathematics, 2018 We present some new results on the simultaneous approximation with given accuracy, uniformly on compact subsets of the critical strip, of a collection of analytic functions by discrete shifts of the Riemann and periodic Hurwitz zeta-functions. We prove that the set of such shifts has a positive lower density.
Laurincikas, Antanas, Macaitiene, Renata
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IET Control Theory &Applications, Volume 20, Issue 1, January/December 2026.This study proposes a recursive hierarchical observer combining an extended Kalman filter, extended state observer and weighted least‐squares algorithm to accurately estimate the oxygen excess ratio in polymer electrolyte membrane fuel cells under challenging low‐current and noisy conditions.
Hyeongki Ahn +5 more
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Event‐Triggered Autonomous Synchronization of a Class of Heterogeneous Multi‐Agent Systems
IET Control Theory &Applications, Volume 20, Issue 1, January/December 2026.This paper studies autonomous synchronization in heterogeneous multi‐agent systems under event‐triggered communication with dual triggers. A novel event‐triggered control law is proposed to achieve both dynamics and state synchronization, and sufficient solvability conditions are derived.
Yuchao Guo, Zhiyong Chen, Yuan Fan
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A generalized limit theorem for the periodic Hurwitz zeta-function
Chebyshevskii sbornik, 2019 The paper deals with the periodic Hurwitz zeta function \(\zeta (s,a,\{ a_{n} \} )=\sum _{n=0}^{\infty }\frac{a_{n} }{(n+a)^{s} } \), \(a>0,\; Res>1\), where \(\{ a_{n} \} \)is a periodic sequence. The author proves a generalized limit theorem for this function.
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