Results 31 to 40 of about 9,352 (243)

MORPHOLOGICAL SAMPLING OF CLOSED SETS

open access: yesImage Analysis and Stereology, 2011
We briefiy survey the standard morphological approach (Heijmans, 1994) to the sampling (or discretization) of sets. Then we summarize the main results of our metric theory of sampling (Ronse and Tajine, 2000; 2001; 2002; Tajine and Ronse, 2002), which ...
Christian Ronse, Mohamed Tajine
doaj   +1 more source

Impacts of Discretization and Numerical Propagation on the Ability to Follow Challenging Square Wave Commands

open access: yesJournal of Marine Science and Engineering, 2022
This study determines the threshold for the computational rate of actuator motor controllers for unmanned underwater vehicles necessary to accurately follow discontinuous square wave commands.
Sung Mo Koo, Henry Travis, Timothy Sands
doaj   +1 more source

A Theory for Sparse Event-Based Closed Loop Control

open access: yesFrontiers in Neuroscience, 2019
Most dynamic systems are controlled by discrete time controllers. One of the main challenges faced during the design of a digital control law is the selection of the appropriate sampling time.
Pierre Daye   +8 more
doaj   +1 more source

Accelerated stochastic sampling of discrete statistical systems [PDF]

open access: yesPhysical Review E, 2010
We propose a method to reduce the relaxation time towards equilibrium in stochastic sampling of complex energy landscapes in statistical systems with discrete degrees of freedom by generalizing the platform previously developed for continuous systems. The method starts from a master equation, in contrast to the Fokker-Planck equation for the continuous
Bertalan, Zsolt   +2 more
openaire   +3 more sources

Importance Sampling for Time-Variant Reliability Analysis

open access: yesIEEE Access, 2021
Importance sampling methods are extensively used in time-independent reliability analysis. However, the kind of methods is barely studied in the field of time-variant reliability analysis.
Jian Wang, Runan Cao, Zhili Sun
doaj   +1 more source

Path planning algorithm of robot arm based on improved RRT* and BP neural network algorithm

open access: yesJournal of King Saud University: Computer and Information Sciences, 2023
To address the issues of slow motion planning, low efficiency, and high path calculation cost of the six-degrees of freedom manipulator in three dimensional multi-obstacle narrow space, a path planning method of the manipulator based on Back Propagation (
Qingyang Gao   +3 more
doaj   +1 more source

The Method for Generating a Set of Reference Images for Assessing the Condition of Critical Infrastructure Facilities Using Mobile Robots [PDF]

open access: yesProblems of the Regional Energetics, 2023
The purpose of this work is to improve the accuracy of critical infrastructure condition assessment using mobile robots by considering the geometric distortions of the current images during the formation of a set of reference images. The goal is achieved
Tymochko O.   +8 more
doaj   +1 more source

Robust Sparse Bayesian Learning for Off-Grid DOA Estimation With Non-Uniform Noise

open access: yesIEEE Access, 2018
The performance of traditional sparse representation-based direction-of-arrival (DOA) estimation algorithm is substantially degraded in the presence of non-uniform noise and off-grid gap caused by the discretization processes.
Huafei Wang   +3 more
doaj   +1 more source

Parametric Estimation of Diffusion Processes: A Review and Comparative Study

open access: yesMathematics, 2021
This paper provides an in-depth review about parametric estimation methods for stationary stochastic differential equations (SDEs) driven by Wiener noise with discrete time observations.
Alejandra López-Pérez   +2 more
doaj   +1 more source

Research on the Dynamic Path Planning of Manipulators Based on a Grid-Local Probability Road Map Method

open access: yesIEEE Access, 2021
A Grid-Local Probability Road Map (PRM) method was proposed for the path planning of manipulators in dynamic environments. Based on the idea of boundary discretization, a double-grid model was built to obtain a mapping from dynamic obstacles to ...
Youyu Liu   +3 more
doaj   +1 more source

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