Results 1 to 10 of about 195,183 (314)

A TV–BM3D Iterative Algorithm for VMAT-CT Reconstruction [PDF]

open access: yesJournal of Imaging
Volumetric modulated arc therapy-computed tomography (VMAT-CT), which is the CT reconstructed using the portal images collected during VMAT, can potentially be an effective onsite imaging tool.
Chia-Lung Chien, Beibei Guo, Rui Zhang
doaj   +2 more sources

A general iterative clustering algorithm [PDF]

open access: yesStatistical Analysis and Data Mining: The ASA Data Science Journal, 2022
AbstractThe quality of a cluster analysis of unlabeled units depends on the quality of the between units dissimilarity measures. Data‐dependent dissimilarity is more objective than data independent geometric measures such as Euclidean distance. As suggested by Breiman, many data driven approaches are based on decision tree ensembles, such as a random ...
Ziqiang Lin, Eugene Laska, Carole Siegel
openaire   +2 more sources

New Iterative Algorithm for Solving Constrained Convex Minimization Problem and Split Feasibility Problem

open access: yesEuropean Journal of Mathematical Analysis, 2021
The purpose of this paper is to introduce a new iterative algorithm to approximate the fixed points of almost contraction mappings and generalized α-nonexpansive mappings.
Austine Efut Ofem   +2 more
doaj   +1 more source

A ROBUST ITERATIVE APPROACH FOR SOLVING NONLINEAR VOLTERRA DELAY INTEGRO–DIFFERENTIAL EQUATIONS

open access: yesUral Mathematical Journal, 2021
This paper presents a new iterative algorithm for approximating the fixed points of multivalued generalized \(\alpha\)–nonexpansive mappings. We study the stability result of our new iterative algorithm for a larger concept of stability known as weak \(w^
Austine Efut Ofem   +2 more
doaj   +1 more source

GNSS troposphere tomography based on two-step reconstructions using GPS observations and COSMIC profiles [PDF]

open access: yesAnnales Geophysicae, 2013
Traditionally, balloon-based radiosonde soundings are used to study the spatial distribution of atmospheric water vapour. However, this approach cannot be frequently employed due to its high cost. In contrast, GPS tomography technique can obtain water
P. Xia, P. Xia, C. Cai, Z. Liu
doaj   +1 more source

Algorithm for Calculating Flowrate of Fluid Energy Carrier for Flowmeter Based on Standard Long Radius Nozzle

open access: yesEnergy Engineering and Control Systems, 2021
New equation and algorithm are developed for non-iterative calculating flowrate of fluid energy carrier for pressure differential flowmeter based on long radius nozzle.
Leonid Lesovoy   +2 more
doaj   +1 more source

Computer non-iterative data acquisition of particle trajectory in a spark chamber [PDF]

open access: yesNuclear Technology and Radiation Protection, 2019
This paper presents a novel non-iterative algorithm for charge particle localization in a spark chamber. Its performance is evaluated by computer simulations using the Monte Carlo simulation method and compared with the performance of an appropriate ...
Polužanski Vladimir S.   +3 more
doaj   +1 more source

CT reconstruction based on separable surrogate optimization

open access: yesShenzhen Daxue xuebao. Ligong ban, 2023
In response to the time-consuming problem of optimizing the objective function in computed tomography (CT) using the iterative coordinate descent algorithm and the regularization model of q-generalized Gaussian Markov random field, an optimization method
HOU Xiaowen   +3 more
doaj   +1 more source

A New Iterative Algorithm for General Variational Inequality Problem with Applications

open access: yesJournal of Function Spaces, 2022
This study aims at investigation of a generalized variational inequality problem. We initiate a new iterative algorithm and examine its convergence analysis.
Aysha Khan   +3 more
doaj   +1 more source

Family constraining of iterative algorithms [PDF]

open access: yesNumerical Algorithms, 2013
Revised: July 5, 2013, Numerical Algorithms, accepted for ...
Yair Censor   +2 more
openaire   +3 more sources

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