Results 51 to 60 of about 114,824,718 (296)

Angular asymptotics for multi-dimensional non-homogeneous random walks with asymptotically zero drift [PDF]

open access: yes, 2009
We study the rst exit time from an arbitrary cone with apex at the origin by a non-homogeneous random walk (Markov chain) on Zd (d 2) with mean drift that is asymptotically zero.
MacPhee, Iain M.   +7 more
core   +4 more sources

Stochastic transient analysis of thermal stresses in solids by explicit time-domain method

open access: yesTheoretical and Applied Mechanics Letters, 2019
Stochastic heat conduction and thermal stress analysis of structures has received considerable attention in recent years. The propagation of uncertain thermal environments will lead to stochastic variations in temperature fields and thermal stresses ...
Houzuo Guo, Cheng Su, Jianhua Xian
doaj   +1 more source

The spatial Λ-Fleming–Viot process in a random environment

open access: yesThe Annals of Applied Probability, 2023
We study the large scale behaviour of a population consisting of two types which evolve in dimension d = 1, 2 according to a spatial Lambda- Fleming-Viot process subject to random time-independent selection. If one of the two types is rare compared to the other, we prove that its evolution can be approximated by a super-Brownian motion in a random (and
Klimek, Aleksander   +1 more
openaire   +3 more sources

From mice to humans—divergent strategies for intestinal homeostasis and regeneration

open access: yesFEBS Letters, EarlyView.
Recent advances such as organoid genome editing, xenotransplantation, imaging, and whole‐genome sequencing have enabled direct studies of human intestinal stem cells (ISCs). These studies reveal species‐specific features, including slower ISC proliferation, distinct injury responses, slower somatic mutation accumulation in humans, and an inverse ...
Keiko Ishikawa   +2 more
wiley   +1 more source

An enhanced stochastic error modeling using multi-Gauss–Markov processes for GNSS/INS integration system

open access: yesJournal of Engineering and Applied Science
Angular random walk (ARW), rate random walk (RRW), and bias instability (BI) are the main noise types in inertial measurement units (IMUs) and thus determine the navigation performance of IMUs. BI is the flicker noise, which determines the noise level of
Youlong Wu, Shuai Chen
doaj   +1 more source

Structural insights and therapeutic targets in Acinetobacter baumannii capsule biosynthesis

open access: yesFEBS Letters, EarlyView.
Hypervirulent KL49 A. baumannii's capsular polysaccharide contains the nonulosonic acid 8‐epi‐Leg5,7Ac2, synthesized by epimerization via ElaA, ElaB, and ElaC. Crystal structures of ElaA, ElaB, and ElaC reveal their role in CMP‐Leg5,7Ac2 synthesis and regioselective C8 epimerization.
Woo Cheol Lee   +7 more
wiley   +1 more source

Branching processes in random environment [PDF]

open access: yes, 2011
In der folgenden Arbeit werden Eigenschaften von Verzweigungsprozessen in zufälliger Umgebung (engl. branching processes in random environment, kurz BPREs) untersucht. Das Modell geht auf Smith (1969) und Athreya (1971) zurück. Ein BPRE ist ein einfaches
Böinghoff, Christian
core  

Shannon Entropy Used for Feature Extractions of Optical Patterns in the Context of Structural Health Monitoring

open access: yesEntropy, 2023
A novelty signal processing method is proposed for a technical vision system (TVS). During data acquisition of an optoelectrical signal, part of this is random electrical fluctuation of voltages.
Wendy Garcia-González   +5 more
doaj   +1 more source

The Coupled Branching Process in Random Environment

open access: yesThe Annals of Probability, 1985
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +2 more sources

On linear birth-and-death processes in a random environment

open access: yesJournal of Mathematical Biology, 2013
We study the probability of extinction for single-type and multi-type continuous-time linear birth-and-death processes in a finite Markovian environment. The probability of extinction is equal to 1 almost surely if and only if the basic reproduction number R(0) is ≤ 1, the key point being to identify a suitable definition of R(0) for such a result to ...
/Bacaër, Nicolas, Ed-Darraz, A.
openaire   +5 more sources

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