Results 41 to 50 of about 3,595,948 (318)

Forward Curvatures on Time Scales [PDF]

open access: yesAbstract and Applied Analysis, 2011
We also introduce forward curvature of a curve and give some formulas to calculate forward curvature of a curve on time scales which may be an arbitrary closed subsets of the set of all real numbers. We also introduce the length of a curve parametrized by a time scale parameter in ℝ3.
Seyyidoglu, M. S.   +4 more
openaire   +4 more sources

Evolutionary interplay between viruses and R‐loops

open access: yesFEBS Letters, EarlyView.
Viruses interact with specialized nucleic acid structures called R‐loops to influence host transcription, epigenetic states, latency, and immune evasion. This Perspective examines the roles of R‐loops in viral replication, integration, and silencing, and how viruses co‐opt or avoid these structures.
Zsolt Karányi   +4 more
wiley   +1 more source

The AA-iterative algorithm in hyperbolic spaces with applications to integral equations on time scales

open access: yesAIMS Mathematics
We explored the $ AA $-iterative algorithm within the hyperbolic spaces (HSs), aiming to unveil a stability outcome for contraction maps and convergence outcomes for generalized $ (\alpha, \beta) $-nonexpansive ($ G\alpha \beta N $) maps in such spaces ...
Aynur Şahin , Zeynep Kalkan
doaj   +1 more source

Optimization of periodic synchronization of UAV's clock by differential phase method

open access: yesУчёные записки Казанского университета: Серия Физико-математические науки, 2021
The article considers the problem of designing a synchronized aerial wireless sensor network of unmanned aerial vehicles (UAVs) with centralized control by a master unit.
A.I. Sulimov
doaj   +1 more source

Canonical time-frequency, time-scale, and frequency-scale representations of time-varying channels [PDF]

open access: yesCommunications in Information and Systems, 2005
Mobile communication channels are often modeled as linear time-varying filters or, equivalently, as time-frequency integral operators with finite support in time and frequency. Such a characterization inherently assumes the signals are narrowband and may not be appropriate for wideband signals.
Rickard, Scott T.   +3 more
openaire   +4 more sources

The epithelial barrier theory proposes a comprehensive explanation for the origins of allergic and other chronic noncommunicable diseases

open access: yesFEBS Letters, EarlyView.
Exposure to common noxious agents (1), including allergens, pollutants, and micro‐nanoplastics, can cause epithelial barrier damage (2) in our body's protective linings. This may trigger an immune response to our microbiome (3). The epithelial barrier theory explains how this process can lead to chronic noncommunicable diseases (4) affecting organs ...
Can Zeyneloglu   +17 more
wiley   +1 more source

Random integral equations on time scales [PDF]

open access: yesOpuscula Mathematica, 2013
In this paper, we present the existence and uniqueness of random solution of a random integral equation of Volterra type on time scales. We also study the asymptotic properties of the unique random solution.
Vasile Lupulescu, Cristina Lungan
doaj   +1 more source

From omics to AI—mapping the pathogenic pathways in type 2 diabetes

open access: yesFEBS Letters, EarlyView.
Integrating multi‐omics data with AI‐based modelling (unsupervised and supervised machine learning) identify optimal patient clusters, informing AI‐driven accurate risk stratification. Digital twins simulate individual trajectories in real time, guiding precision medicine by matching patients to targeted therapies.
Siobhán O'Sullivan   +2 more
wiley   +1 more source

Diversity of timescale promotes the maintenance of extortioners in a spatial prisoner’s dilemma game

open access: yesNew Journal of Physics, 2015
Recently, a class of interesting strategies, named extortion strategies, has attracted considerable attention since such extortion strategies can dominate any opponent in a repeated prisoner's dilemma game.
Zhihai Rong   +4 more
doaj   +1 more source

The Geological Time-Scale [PDF]

open access: yesNature, 1959
SINCE my communication on this subject was written1, much has happened. Prof. J. L. Kulp2 has just published a time-scale in which the duration of the geological periods is given as follows: Ordovician, 490–430 m.y.; Silurian 430–410 m.y.; Devonian 410–355 m.y.; Mississippian 355–330 m.y.; Pennsylvanian 330–275 m.y.; Permian 275–220 m.y.; Triassic 220 ...
openaire   +2 more sources

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