Results 91 to 100 of about 1,246,913 (311)

Spurious Brownian Motions [PDF]

open access: yesProceedings of the American Mathematical Society, 1986
Spurious Brownian motions are characterized in R
openaire   +1 more source

Bio‐Inspired Object Retrieval via Proximity‐Guided Adaptive Thigmotactic Exploration and Neuromorphic Recognition

open access: yesAdvanced Robotics Research, EarlyView.
Sparse active‐infrared proximity sensing is coupled to an adaptive thigmotactic controller for camera‐inaccessible object retrieval. After grasping, receptor‐informed encoding transforms force, temperature, and wrist force–torque signals into spike trains for spiking neural network recognition.
Fengyi Wang, Nitish Thakor, Gordon Cheng
wiley   +1 more source

A group action on increasing sequences of set-indexed Brownian motions

open access: yesModern Stochastics: Theory and Applications, 2015
We prove that a square-integrable set-indexed stochastic process is a set-indexed Brownian motion if and only if its projection on all the strictly increasing continuous sequences are one-parameter G-time-changed Brownian motions.
Arthur Yosef
doaj   +1 more source

Stochastic perturbation of the Lighthill–Whitham–Richards model via the method of stochastic characteristics

open access: yesJournal of Mathematics in Industry, 2021
In this paper we apply the method of stochastic characteristics to a Lighthill–Whitham–Richards model. The stochastic perturbation can be seen as errors in measurement of the traffic density.
Nora Müller, Wolfgang Bock
doaj   +1 more source

Generalized dimensions of images of measures under Gaussian processes [PDF]

open access: yes, 2014
26 pagesWe show that for certain Gaussian random processes and fields X:RN→Rd, Dq(μx) = min {d, 1/α Dq (μ)} a.s., for an index α which depends on Hölder properties and strong local nondeterminism of X, where q>1, where Dq denotes generalized q-dimension ...
Falconer, Kenneth   +2 more
core   +1 more source

Model Predictive Control for Magnetically Actuated Cellbots

open access: yesAdvanced Robotics Research, EarlyView.
Magnetically actuated cellbots, formed by embedding microrobots in living cells, are steered along precise paths using a model predictive controller enhanced with a Gaussian process disturbance estimator. The data‐efficient method calibrates each cellbot individually, cutting modeling error by roughly 60% and enabling accurate navigation through cell ...
Mehdi Kermanshah   +8 more
wiley   +1 more source

Option Pricing in a Fractional Brownian Motion Environment [PDF]

open access: yes
The purpose of this paper is to obtain a fractional Black-Scholes formula for the price of an option for every t in [0,T], a fractional Black-Scholes equation and a risk-neutral valuation theorem if the underlying is driven by a fractional Brownian ...
Cipian Necula
core  

Robotics in Ionizing Radiation Environments: Vulnerabilities, Hardening, and Future Directions

open access: yesAdvanced Robotics Research, EarlyView.
Radiation exposure causes cumulative degradation in robotic sensors, actuators, and electronic logic, often leading to undetected failures. This study maps component vulnerabilities, evaluates hardening and shielding strategies, and identifies testing gaps that must be addressed to enable next‐generation radiation‐tolerant robotic systems.
Francis A. K. Djirackor   +4 more
wiley   +1 more source

Karhunen-Loève Expansion for the Second Order Detrended Brownian Motion

open access: yesAbstract and Applied Analysis, 2014
Based on the norm in the Hilbert Space L2[0,1], the second order detrended Brownian motion is defined as the orthogonal component of projection of the standard Brownian motion into the space spanned by nonlinear function subspace.
Yongchun Zhou   +3 more
doaj   +1 more source

Haloarchaea swim slowly for optimal chemotactic efficiency in low nutrient environments

open access: yesNature Communications, 2020
Brownian motion places the ultimate limit on microorganisms’ ability to navigate. Thornton et al. show that Haloarchaea have a strategy of slow swimming and infrequent reorientation that exploits the randomising nature of Brownian motion to achieve ...
Katie L. Thornton   +4 more
doaj   +1 more source

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