Results 21 to 30 of about 28,500 (245)

Almost Periodic Solutions on a Class Secondorder Differential Equations with Piecewise Constant Argument

open access: yesJournal of Harbin University of Science and Technology, 2019
Almost periodic solutions of differential equations are more general than periodic solutions, so almost periodic solutions will be studied on a class secondorder differential equations with piecewise constant argument.
YAO Hui-li   +2 more
doaj   +1 more source

The Method of Estimating the Period of a Symbolic Periodic Sequence with Noise, Based on the Sub-Words Positions in the Sequence

open access: yesСовременные информационные технологии и IT-образование, 2020
The method of estimating the period of an almost periodic sequence is proposed. The period of an almost periodic sequence is the length of the smallest periodic pattern that composes the corresponding completely periodic sequence by repetition.
Galina Zhukova   +3 more
doaj   +1 more source

Exploring the Individual Pulse Behavior of Pulsar J1701−3726 with Parkes

open access: yesThe Astrophysical Journal, 2023
We have carried out a detailed study of polarimetric individual pulse emission from the pulsar J1701−3726 (B1658−37), observed at 1369 MHz using the Parkes 64 m radio telescope.
H. Wang   +17 more
doaj   +1 more source

Almost Periodic Solutions of Abstract Impulsive Volterra Integro-Differential Inclusions

open access: yesFractal and Fractional, 2023
In this paper, we introduce and systematically analyze the classes of (pre-)(B,ρ,(tk))-piecewise continuous almost periodic functions and (pre-)(B,ρ,(tk))-piecewise continuous uniformly recurrent functions with values in complex Banach spaces.
Wei-Shih Du   +2 more
doaj   +1 more source

The feasibility of Gazefinder under 12 months of age infants

open access: yesScientific Reports, 2021
Eye-tracking to evaluate gaze patterns has developed as an assessment tool for children with autism spectrum disorder (ASD). Gazefinder is one of Eye-tracking devices and few studies have investigated whether it can measure the gaze data of infants under
Shuntaro Fukushima   +8 more
doaj   +1 more source

Averaging Almost Periodic Functions along Exponential Sequences [PDF]

open access: yes, 2017
18 pages, book contribution (expository)
Baake, Michael   +2 more
openaire   +2 more sources

Uniformly Almost Periodic Functions and Almost Periodic Solutions to Dynamic Equations on Time Scales

open access: yesAbstract and Applied Analysis, 2011
Firstly, we propose a concept of uniformly almost periodic functions on almost periodic time scales and investigate some basic properties of them. When time scale T=ℝ or ℤ, our definition of the uniformly almost periodic functions is equivalent to the ...
Yongkun Li, Chao Wang
doaj   +1 more source

Positive almost periodic type solutions to a class of nonlinear difference equation

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2011
This paper is concerned with positive almost periodic type solutions to a class of nonlinear difference equation with delay. By using a fixed point theorem in partially ordered Banach spaces, we establish several theorems about the existence and ...
Huisheng Ding   +2 more
doaj   +1 more source

Comparative study of elastic properties and mode I fracture energy of carbon nanotube/epoxy and carbon fibre/epoxy laminated composites

open access: yesMicro and Nano Systems Letters, 2020
A comparative study of elastic properties and mode I fracture energy has been presented between conventional carbon fibre (CF)/epoxy and advanced carbon nanotube (CNT)/epoxy laminated composite materials.
Jyotikalpa Bora, Sushen Kirtania
doaj   +1 more source

Almost Periodic Solutions of a Discrete Mutualism Model with Feedback Controls

open access: yesDiscrete Dynamics in Nature and Society, 2010
We consider a discrete mutualism model with feedback controls. Assuming that the coefficients in the system are almost periodic sequences, we obtain the existence and uniqueness of the almost periodic solution which is uniformly asymptotically stable.
Zheng Wang, Yongkun Li
doaj   +1 more source

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