Results 51 to 60 of about 4,872,758 (330)

Improvement in the Number of Velocity Vector Acquisitions Using an In-Picture Tracking Method for 3D3C Rainbow Particle Tracking Velocimetry

open access: yesFluids
Particle image velocimetry and particle tracking velocimetry (PTV) have developed from two-dimensional two-component (2D2C) velocity vector measurements to 3D3C measurements.
Mao Takeyama   +2 more
doaj   +1 more source

Confidence-Level-Based New Adaptive Particle Filter for Nonlinear Object Tracking

open access: yesInternational Journal of Advanced Robotic Systems, 2012
Nonlinear object tracking from noisy measurements is a basic skill and a challenging task of mobile robotics, especially under dynamic environments. The particle filter is a useful tool for nonlinear object tracking with non-Gaussian noise.
Xiaoyong Zhang   +3 more
doaj   +1 more source

An improved quantum particle swarm photovoltaic multi‐peak mPPT method combined with Lévy flight

open access: yesEnergy Science & Engineering, 2020
Inertial weight adaptive quantum particle swarm optimization (DCWQPSO) algorithm can effectively improve the problem of particle falling into local extreme value.
Lei Chen   +3 more
doaj   +1 more source

Trajectory data of antero- and retrograde movement of mitochondria in living zebrafish larvae

open access: yesData in Brief, 2020
Recently, a large number of single particle tracking (SPT) approaches have been developed. Generally, SPT techniques can be split into two groups: ex post facto approaches where trajectory extraction is carried out after data acquisition and feedback ...
Frank Mieskes   +5 more
doaj   +1 more source

Four-dimensional multi-particle tracking in living cells based on lifetime imaging

open access: yesNanophotonics, 2022
Research on dynamic events in living cells, such as intracellular transportation, is important for understanding cell functions. As movements occur within cells, the microenvironment of the moving vesicles or biomacromolecules may affect the behavior of ...
Chen Danni, Li Heng, Yu Bin, Qu Junle
doaj   +1 more source

Propagation of numerical noise in particle-in-cell tracking

open access: yes, 2015
Particle-in-cell (PIC) is the most used algorithm to perform self-consistent tracking of intense charged particle beams. It is based on depositing macro-particles on a grid, and subsequently solving on it the Poisson equation.
Franchetti, Giuliano, Kesting, Frederik
core   +2 more sources

Particle tracking around surface nanobubbles [PDF]

open access: yesJournal of Physics: Condensed Matter, 2013
The exceptionally long lifetime of surface nanobubbles remains one of the biggest questions in the field. One of the proposed mechanisms for the stability is the \emph{dynamic equilibrium} model, which describes a constant flux of gas in and out of the bubble. Here, we describe results from particle tracking experiments to measure this flow.
Dietrich, Erik   +3 more
openaire   +4 more sources

An Adaptive Particle Swarm Optimization for Underwater Target Tracking in Forward Looking Sonar Image Sequences

open access: yesIEEE Access, 2018
In order to obtain accurate underwater target tracking results in forward-looking sonar image sequences, an adaptive particle swarm optimization (APSO) algorithm is proposed to track the underwater target.
Xingmei Wang, Guoqiang Wang, Yanxia Wu
doaj   +1 more source

Research on Particle Filter Video Tracking Algorithms

open access: yesJournal of Harbin University of Science and Technology, 2020
Aiming at the problem of insufficient robustness of moving target tracking in complex scenes, a particle filter target tracking algorithm based on CNN feature extraction is proposed CNN selflearning mechanism is used to extract highlevel semantic ...
YU Shuchun, TONG Xiaoyu
doaj   +1 more source

Georges: A modular Python library for seamless beam dynamics simulations and optimization

open access: yesSoftwareX, 2023
Particle tracking codes such as MAD-X or TRANSPORT commonly use a matrix formalism to propagate beams through magnetic elements as it simplifies the analysis of particle behavior, facilitates beam optimization and component design, and enables accurate ...
Robin Tesse   +5 more
doaj   +1 more source

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