Results 41 to 50 of about 498,134 (298)

Molecular detection of highly pathogenic avian influenza H5N8 in commercial broiler chicken farms from 2019 to 2022

open access: yesPoultry Science, 2023
: Highly pathogenic avian influenza (HPAI) is a serious viral infection that causes massive economic losses in poultry. The current study investigated the HPAI virus prevalence in commercial broiler chicken flocks from 2019 to 2022.
Ahmed Setta   +7 more
doaj   +1 more source

Mean almost periodicity and moment exponential stability of semi-discrete random cellular neural networks with fuzzy operations.

open access: yesPLoS ONE, 2019
By using the semi-discretization technique of differential equations, the discrete analogue of a kind of cellular neural networks with stochastic perturbations and fuzzy operations is formulated, which gives a more accurate characterization for ...
Sufang Han, Guoxin Liu, Tianwei Zhang
doaj   +1 more source

Asymptotically almost periodic mild solutions to a class of Weyl-like fractional difference equations

open access: yesAdvances in Difference Equations, 2019
This paper is concentrated on a class of difference equations with a Weyl-like fractional difference in a Banach space X forms like △αx(n)=Ax(n+1)+F(n,x(n)),n∈Z, $$ \triangle ^{\alpha }x(n)=Ax(n+1)+F\bigl(n, x(n)\bigr), \quad n\in \mathbb{Z}, $$ where α∈(
Junfei Cao, Bessem Samet, Yong Zhou
doaj   +1 more source

Equalization of pulse timings in an excitable microlaser system with delay

open access: yesPhysical Review Research, 2020
An excitable semiconductor micropillar laser with delayed optical feedback is able to regenerate pulses by the excitable response of the laser. It has been shown that almost any pulse sequence can, in principle, be excited and regenerated by this system ...
Soizic Terrien   +7 more
doaj   +1 more source

C-DTW for Human Action Recognition Based on Nanogenerator

open access: yesSensors, 2023
Sensor-based human action recognition (HAR) is considered to have broad practical prospects. It applies to wearable devices to collect plantar pressure or acceleration information at human joints during human actions, thereby identifying human motion ...
Haifeng Xu, Renhai Feng, Weikang Zhang
doaj   +1 more source

Bohr's equivalence relation in the space of Besicovitch almost periodic functions [PDF]

open access: yes, 2018
Based on Bohr's equivalence relation which was established for general Dirichlet series, in this paper we introduce a new equivalence relation on the space of almost periodic functions in the sense of Besicovitch, $B(\mathbb{R},\mathbb{C})$, defined in ...
Sepulcre, J. M., Vidal, T.
core   +3 more sources

Analysis of two step nilsequences [PDF]

open access: yes, 2007
Nilsequences arose in the study of the multiple ergodic averages associated to Furstenberg's proof of Szemer\'edi's Theorem and have since played a role in problems in additive combinatorics. Nilsequences are a generalization of almost periodic sequences
Host, Bernard, Kra, Bryna
core   +4 more sources

Discovering Periodic Itemsets Using Novel Periodicity Measures

open access: yesAdvances in Electrical and Electronic Engineering, 2019
Discovering periodic patterns in a customer transaction database is the task of identifying itemsets (sets of items or values) that periodically appear in a sequence of transactions. Numerous methods can identify patterns exhibiting a periodic behavior.
Philippe Fournier-Viger   +7 more
doaj   +1 more source

Investigation of the saturation pulse artifact in non-enhanced MR angiography of the lower extremity arteries at 7 Tesla. [PDF]

open access: yesPLoS ONE, 2015
When performing non-enhanced time-of-flight MR angiography of the lower extremity arteries at 7 T with cardiac triggering, the acquisition time is a crucial consideration.
Sören Johst   +5 more
doaj   +1 more source

Regular and Anomalous Quantum Diffusion in the Fibonacci Kicked Rotator

open access: yes, 2000
We study the dynamics of a quantum rotator kicked according to the almost-periodic Fibonacci sequence. A special numerical technique allows us to carry on this investigation for as many as $10^{12}$ kicks.
Casati, G.   +2 more
core   +1 more source

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