Results 41 to 50 of about 15,429,485 (123)

PID Controller Design for a Fractional Order System using Bode’s Ideal Transfer Function

, 2017
: In this paper, an optimization method is proposed to design a fractional order system with PID controller by taking Bode’s ideal transfer function as reference model.
Tufan Doğruer, A. Yüce, N. Tan
semanticscholar   +3 more sources

Emergent Spin Hall Quantization and High‐Order van Hove singularities in Square‐Octagonal MA2Z4

Advanced Physics Research, Volume 5, Issue 7, July 2026.
Square‐octagonal MA2Z4 (M = Mo/W, A = Si/Ge, Z = pnictogen) monolayers are predicted to realize quantum spin Hall insulators with nearly quantized spin Hall conductivity enabled by an emergent spin U(1) quasi‐symmetry. Materials with Z = As and Sb host quasi‐flat bands with high‐order van Hove singularities near the Fermi level, making them promising ...
Rahul Verma, Yash Vardhan, Hsin Lin, Bahadur Singh   +3 more
wiley   +1 more source

Optimal approximation, simulation and analog realization of the fundamental fractional order transfer function [PDF]

, 2007
International audienceThis paper provides an optimal approximation of the fundamental linear fractional order transfer function using a distri-bution of the relaxation time function.
Djouambi, A., Charef, A., Besançon, A. V., Abdelfatah Charef, Alina Voda Besançon, Charef, Abdelfatah, Voda, Alina, Djouambi, Abdelbaki, Abdelbaki Djouambi   +8 more
core   +1 more source

Unsteady MHD Heat Transfer of a Casson–Williamson Ternary Hybrid Nanofluid Over a Biaxially Stretching/Shrinking Sheet With Cattaneo–Christov Heat Flux and Multi‐Mode Thermal Radiation

Engineering Reports, Volume 8, Issue 7, July 2026.
A numerical study of Casson–Williamson ternary hybrid nanofluid flow reveals that magnetic effects enhance transverse velocity while suppressing axial components, and increased thermal relaxation reduces heat transfer rates under multiple radiation models, highlighting improved control of thermal performance in advanced engineering and electronics ...
Khaled Matarneh, Yousra Nazneen, Muhammad Rooman, Zahir Shah, Meshal Shutaywi   +4 more
wiley   +1 more source

Fractional dynamical model for the generation of ECG like signals from filtered coupled Van-der Pol oscillators

, 2013
In this paper, an incommensurate fractional order (FO) model has been proposed to generate ECG like waveforms. Earlier investigation of ECG like waveform generation is based on two identical Van-der Pol (VdP) family of oscillators, which are coupled by ...
Das, Saptarshi, Maharatna, Koushik
core   +1 more source

Systematic Investigation and DOE‐based Modeling of Thermo‐Responsive Behavior and Mechanical Properties of PNIPAm‐PEGDA Hydrogels

Macromolecular Materials and Engineering, Volume 311, Issue 7, July 2026.
PNIPAm‐PEGDA hydrogels are systematically engineered to enable programmable thermo‐responsive behavior, mechanics, and drug release through compositional tuning. A DOE‐based approach quantitatively links monomer ratios to network structure and macroscopic performance.
Wonseok Tae, Prabakaran Shankar, Wonsuk Jung   +2 more
wiley   +1 more source

ДРОБНОЕ ИСЧИСЛЕНИЕ И АППРОКСИМАЦИОННЫЕ МЕТОДЫ В МОДЕЛИРОВАНИИ ДИНАМИЧЕСКИХ СИСТЕМ [PDF]

, 2008
Книга посвящена аппроксимационно-операционным методам моделирования динамических систем дробного и смешанного порядков. Рассмотрены методы аппроксимации сигналов обобщенными полиномами с различными системами базисных функций, построение на основе этих ...
Симак, Лилия Алексеевна, Васильев, Всеволод Викторович   +1 more
core   +1 more source

Developing a Heterogeneous Attenuation Model for Fiber Reinforced Thermoplastic Composites in the Kilohertz Region of the Ultrasonic Spectrum

Polymer Composites, Volume 47, Issue S2, Page S85-S95, 20 June 2026.
Acquisition, filtering and modeling by genetic programming (tree pattern) of the acoustic signal for fiber‐filled composites. ABSTRACT This study experimentally investigated the discrete phase contributions of fibers and entrapped air on the attenuation spectrum of a fiber‐filled thermoplastic composite and derives a mathematical expression for sound ...
Austin D. Bedrosian, Andrew Hrymak, Gisela Lanza, Michael R. Thompson   +3 more
wiley   +1 more source

Random fractional Fourier transform : stochastic perturbations along the axis of propagation [PDF]

, 1999
The fractional Fourier transform (FRT) is known to be optically implementable with use of a medium with a perfect radial quadratic-index profile. Using the quantum-mechanical operator formalism, we examine the effects on the FRT action of such a medium
Abe, Sumiyoshi, Sheridan, John T.
core   +1 more source

Tuning Excitonic Properties and Charge Carrier Dynamics by Halide Alloying in Cs3Bi2(Br1−xIx)9 Semiconductors

Advanced Optical Materials, Volume 14, Issue 23, 19 June 2026.
This work studies the effect of halide alloying in Cs3Bi2(Br1−xIx)9 (0 ≤ x ≤ 1) semiconductors. The x = 0.6 shows the smallest bandgap, lowest exciton binding energy, and longest charge carrier lifetimes, showing promising properties for optoelectronic and photocatalytic applications.
He Zhao, Eline M. Hutter
wiley   +1 more source