Results 11 to 20 of about 9,025,079 (233)

Initial On-Orbit Modulation Transfer Function Performance Analysis for Geostationary Ocean Color Imager [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2012
The world’s first geostationary ocean color imager (GOCI) is a three-mirror anastigmat optical system 140 mm in diameter. Designed for 500 m ground sampling distance, this paper deals with on-orbit modulation transfer function (MTF)measurement and ...
Eunsong Oh   +4 more
doaj   +1 more source

A Point Crack Source Location Method without Velocity Information in Anisotropic Plates

open access: yesApplied Sciences, 2022
Locating cracks in a solid object using acoustic emission (AE) is useful both for detecting defects during safety monitoring and for basic laboratory studies of fractures.
Dong Geon Lim   +3 more
doaj   +1 more source

“So let me give you money, you give me what I want”: decision-making priorities around contraceptive method and source choice among young women in Kenya

open access: yesReproductive Health, 2023
Background Many factors influence young women’s choice of contraceptive methods and where to source them, yet less is known about whether one of these choices (method or source) is prioritized and the relationship between these choices.
Lisa M. Calhoun   +9 more
doaj   +1 more source

Advance detection technology of three-point source DC method based on COMSOL

open access: yesMeikuang Anquan, 2023
When the traditional single point power supply electrode DC advance detection technology is used to detect the long-distance anomaly, the signal gradually weakens and the accuracy greatly decreases with the increase of detection distance.
GAO Weifu, WANG Kewei, HU Anshun, WANG Naijun
doaj   +1 more source

Proximal methods for point source localisation

open access: yesJournal of Nonsmooth Analysis and Optimization, 2023
Point source localisation is generally modelled as a Lasso-type problem on measures. However, optimisation methods in non-Hilbert spaces, such as the space of Radon measures, are much less developed than in Hilbert spaces. Most numerical algorithms for point source localisation are based on the Frank-Wolfe conditional gradient method, for which ad hoc ...
openaire   +3 more sources

Solving eigenvalues problems for Helmholtz equation by point-source method

open access: yesAdvanced Engineering Research, 2016
A method of problem solution of the eigenvalues and eigenfunctions for the Helmholtz equation in the domains with arbitrary configuration is worked out.
Elena E. Shcherbakova
doaj   +1 more source

Family of Quantum Sources for Improving Near Field Accuracy in Transducer Modeling by the Distributed Point Source Method

open access: yesApplied Sciences, 2016
The distributed point source method, or DPSM, developed in the last decade has been used for solving various engineering problems—such as elastic and electromagnetic wave propagation, electrostatic, and fluid flow problems.
Dominique Placko   +2 more
doaj   +1 more source

Regional Non-point Source Pollution Control Method: A Design of Ecological Compensation Standards

open access: yesFrontiers in Environmental Science, 2021
Reasonable ecological compensation standard is the key to solve farmland non-point source pollution. In the design of compensation standards, the current investigation included ecological benefits in selecting the experimental method.
Shibao Lu   +3 more
doaj   +1 more source

Bayesian methods of astronomical source extraction [PDF]

open access: yes, 2007
We present two new source extraction methods, based on Bayesian model selection and using the Bayesian Information Criterion (BIC). The first is a source detection filter, able to simultaneously detect point sources and estimate the image background. The
Pilbratt G. L.   +3 more
core   +2 more sources

Application of the generalized point source method for solving boundary value problems of mathematical physics

open access: yesAdvanced Engineering Research, 2017
Introduction. The work objective is to develop a new universal numerical method for solving boundary value problems for linear elliptic equations. Materials and Methods .
Sergey Yu. Knyazev   +1 more
doaj   +1 more source

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