Search Results - "Computing methodologies and applications"

Primal-dual hybrid gradient image denoising algorithm based on overlapping group sparsity and fractional-order total variation

Authors: Bi, Shaojiu Li, Minmin Cai, Guangcheng

Source: Applied Mathematical Modelling. 135:666-683

Subject Terms: Computing methodologies and applications, image denoising, Communication, information, semi-adaptive parameter \(p(x)\), Mathematical programming, fractional-order total variation, overlapping group sparsity, primal-dual hybrid gradient algorithm

File Description: application/xml

Access URL: https://zbmath.org/8008980
https://doi.org/10.1016/j.apm.2024.07.015

Ortho-Radial Drawing in Near-Linear Time: Ortho-radial drawing in near-linear time

Authors: Yi-Jun Chang

Contributors: Yi-Jun Chang

Source: TheoretiCS. 4

Subject Terms: Computational Geometry (cs.CG), FOS: Computer and information sciences, Computing methodologies and applications, Graph drawing, Graph theory, graph drawing, topology-shape-metric framework, Discrete mathematics in relation to computer science, ortho-radial drawing, Computer Science - Data Structures and Algorithms, Computer Science - Computational Geometry, Data Structures and Algorithms (cs.DS), ddc:004

File Description: application/xml; application/pdf

Access URL: http://arxiv.org/abs/2305.00425
https://zbmath.org/8036758
https://doi.org/10.46298/theoretics.25.11
https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.ICALP.2023.35

Fractional guidance-based level set evolution for noisy image segmentation with intensity inhomogeneity

Authors: Yu Wang Chuanjiang He

Source: Applied Mathematical Modelling. 130:580-602

Subject Terms: Artificial intelligence, Computing methodologies and applications, Communication, information, diffusion, fractional derivative, image segmentation, level set, Bayesian formulation

File Description: application/xml

Rectilinear convex hull of points in 3D and applications

Authors: Pablo Pérez-Lantero Carlos Seara Jorge Urrutia et al.

Contributors: Pablo Pérez-Lantero Carlos Seara Jorge Urrutia et al.

Source: UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)

Subject Terms: Àrees temàtiques de la UPC::Matemàtiques i estadística::Geometria, Hull, Fitting in 3D, Marine engineering, Computational Mechanics, 0211 other engineering and technologies, Computational Geometry, Geometry, 0102 computer and information sciences, 02 engineering and technology, Geometria discreta, Computing Methodologies, 01 natural sciences, Shape Representation, Engineering, Informàtica, Connected Component Labeling Algorithms, FOS: Mathematics, Analysis of Three-Dimensional Shape Structures, Classificació AMS::52 Convex and discrete geometry::52C Discrete geometry, Classificació AMS::68 Computer science::68U Computing methodologies and applications, Discrete Geometry, Àrees temàtiques de la UPC::Matemàtiques i estadística::Geometria::Geometria convexa i discreta, Discrete geometry, Rectilinear convex hull, Mesh Generation Algorithms, Geometria convexa, Computer Graphics and Computer-Aided Design, Regular polygon, Convex geometry, Rotation around the Z-axis, Àrees temàtiques de la UPC::Matemàtiques i estadística::Matemàtica aplicada a les ciències, Combinatorics, Computer Science, Physical Sciences, Point Set Surfaces, Convex hull, Computer Vision and Pattern Recognition, Classificació AMS::52 Convex and discrete geometry::52A General convexity, 3D Reconstruction, Mathematics

File Description: application/pdf

Access URL: https://hdl.handle.net/2117/409496
https://doi.org/10.1007/s10898-024-01402-3

A novel collision model for inextensible textiles and its experimental validation

Authors: Coltraro, Franco Amorós Torrent, Jaume Alberich Carramiñana, Maria et al.

Contributors: Coltraro, Franco Amorós Torrent, Jaume Alberich Carramiñana, Maria et al.

Source: UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)
Applied Mathematical Modelling

Subject Terms: FOS: Computer and information sciences, Classificació AMS::90 Operations research, Experimental validation, Classificació AMS::68 Computer science::68U Computing methodologies and applications, Àrees temàtiques de la UPC::Matemàtiques i estadística, Inextensible cloth, mathematical programming::90C Mathematical programming, Collision modeling, Classificació AMS::90 Operations research, mathematical programming::90C Mathematical programming, Graphics (cs.GR), Classificació AMS::70 Mechanics of particles and systems::70F Dynamics of a system of particles, Computer Science - Robotics, Computer Science - Graphics, Optimization and Control (math.OC), FOS: Mathematics, Classificació AMS::70 Mechanics of particles and systems::70F Dynamics of a system of particles, including celestial mechanics, including celestial mechanics, Constrained optimization, 70F35, 68U20, 90C20, Mathematics - Optimization and Control, Robotics (cs.RO), Coloumb friction

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Access URL: http://arxiv.org/abs/2303.14437

Mathematical modelling for high precision ray tracing in optical design

Authors: Changmao Wu Yuanyuan Xia Zhengwei Xu et al.

Source: Applied Mathematical Modelling. 128:103-122

Subject Terms: Computing methodologies and applications, ray tracing, floating-point arithmetic, Numerical linear algebra, high precision numerical algorithm, Numerical approximation and computational geometry (primarily algorithms), error model, optical design

File Description: application/xml

Access URL: https://zbmath.org/7996730
https://doi.org/10.1016/j.apm.2024.01.012

Topology-preserving image registration with novel multi-dimensional Beltrami regularization

Authors: Chongfei Huang Ke Chen Meixiang Huang et al.

Source: Applied Mathematical Modelling. 125:539-556

Subject Terms: Computing methodologies and applications, Communication, information, topology-preserving, 3D image registration, 02 engineering and technology, 01 natural sciences, Beltrami regularization, 0202 electrical engineering, electronic engineering, information engineering, nD Beltrami coefficient, 0101 mathematics, Numerical methods for partial differential equations, initial value and time-dependent initial-boundary value problems, Mathematics, variational model

File Description: application/xml; text

Intensity inhomogeneity image segmentation based on the gradient-based spaces and the prior constraint

Authors: Zhi-Feng Pang Jinyan Yao Baoli Shi et al.

Source: Applied Mathematical Modelling. 119:605-625

Subject Terms: prior constraint, Computing methodologies and applications, Numerical methods for mathematical programming, optimization and variational techniques, iterative convolution-thresholding method, Mathematical programming, alternating direction method of multipliers (ADMM), intensity inhomogeneity image segmentation, gradient-based model

File Description: application/xml

Access URL: https://zbmath.org/8019337
https://doi.org/10.1016/j.apm.2023.02.024

Report on an extended three-coupled Korteweg-de Vries system

Authors: Gao, Xin-Yi Guo, Yong-Jiang Shan, Wen-Rui et al.

Source: Ricerche di Matematica. 74:575-584

Subject Terms: Computing methodologies and applications, extended three-coupled Korteweg-de Vries system, KdV equations (Korteweg-de Vries equations), \(N\)-soliton solutions, Fluid mechanics, Hirota method, Symbolic computation and algebraic computation, bilinear forms, symbolic computation

File Description: application/xml

Access URL: https://zbmath.org/8023262
https://doi.org/10.1007/s11587-023-00769-x

Positive, negative and controlled durotaxis

Authors: Sáez Viñas, Pablo Venturini, Chiara Universitat Politècnica de Catalunya. Departament d'Enginyeria Civil i Ambiental et al.

Contributors: Sáez Viñas, Pablo Venturini, Chiara Universitat Politècnica de Catalunya. Departament d'Enginyeria Civil i Ambiental et al.

Source: UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)
Soft Matter

Subject Terms: Anàlisi numèrica, Biologia, Classificació AMS::68 Computer science::68U Computing methodologies and applications, Àrees temàtiques de la UPC::Matemàtiques i estadística::Anàlisi numèrica, Cell Membrane, Classificació AMS::92 Biology and other natural sciences::92C Physiological, cellular and medical topics, simulation and stochastic differential equations, Classificació AMS::92 Biology and other natural sciences::92C Physiological, Numerical analysis--Simulation methods, cellular and medical topics, Computing Methodologies, Mechanotransduction, Cellular, Classificació AMS::65 Numerical analysis::65C Probabilistic methods, simulation and stochastic differential equations, Àrees temàtiques de la UPC::Matemàtiques i estadística::Matemàtica aplicada a les ciències, Cell Movement, Informàtica, Cell Adhesion, Classificació AMS::65 Numerical analysis::65C Probabilistic methods, Biology

File Description: application/pdf

Access URL: https://pubmed.ncbi.nlm.nih.gov/37016959
https://www.biorxiv.org/content/10.1101/2022.09.26.508682v1.full
https://doi.org/10.1039/d2sm01326f
https://hdl.handle.net/2117/387521

A fuzzy topological model of hemimetric-based fuzzy rough set and some applications to digital image processing

Authors: Xinyue Han Wei Yao Chang-Jie Zhou

Source: Topology and its Applications. 367:109327

Subject Terms: noise reduction, Computing methodologies and applications, opening operator, Fuzzy topology, Applications of general topology to computer science (e.g., digital topology, image processing), neighborhood-controlled fuzzy rough set, closing operator, fingerprint cleaning, hole filling

File Description: application/xml

ACPDNLS: Adaptive convexity preserving double nonzero level set for cardiac MR image segmentation

Authors: Ji Li Aiwen Liu Yan Wang

Source: Applied Mathematical Modelling. 142:115975

Subject Terms: double nonzero level set, adaptive convexity preserving, Computing methodologies and applications, Communication, information, cardiac MR image segmentation, level set method, Numerical approximation and computational geometry (primarily algorithms), left and right ventricle

File Description: application/xml

Access URL: https://zbmath.org/8027080
https://doi.org/10.1016/j.apm.2025.115975

The Complexity of Geodesic Spanners using Steiner Points

Authors: de Berg, Sarita Ophelders, Tim Parada, Irene et al.

Contributors: de Berg, Sarita Ophelders, Tim Parada, Irene et al.

Source: UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)

Subject Terms: spanner, Computational Geometry (cs.CG), FOS: Computer and information sciences, Geodesic distance, Classificació AMS::68 Computer science::68U Computing methodologies and applications, Àrees temàtiques de la UPC::Matemàtiques i estadística, simple polygon, Spanner, Complexity, polygonal domain, Simple polygon, Computing methodologies, Polygonal domain, Informàtica, Computer Science - Data Structures and Algorithms, Computer Science - Computational Geometry, Data Structures and Algorithms (cs.DS), ddc:004, complexity, geodesic distance

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Access URL: http://arxiv.org/abs/2402.12110
https://research.tue.nl/en/publications/986a8b8f-a98f-4a53-a7d9-b42a7d81e93b
https://research-portal.uu.nl/en/publications/5e18b904-d072-49d0-b897-0ce9ade1db40
https://doi.org/10.4230/LIPIcs.ISAAC.2024.25
https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.ISAAC.2024.25
https://hdl.handle.net/2117/426631
https://arxiv.org/abs/2402.12110
https://doi.org/10.4230/lipics.isaac.2024.25

Separating bichromatic point sets in the plane by restricted orientation convex hulls

Authors: Carlos Alegrı́a David Orden Carlos Seara et al.

Contributors: Carlos Alegrı́a David Orden Carlos Seara et al.

Source: UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)
e_Buah Biblioteca Digital Universidad de Alcalá
instname

Subject Terms: Optimization, Computational Geometry (cs.CG), FOS: Computer and information sciences, Stereo Vision and Depth Estimation, Artificial intelligence, Matemáticas, Computational Mechanics, 0211 other engineering and technologies, Computational Geometry, Geometry, 0102 computer and information sciences, 02 engineering and technology, Computing Methodologies, 01 natural sciences, Engineering, Informàtica, FOS: Mathematics, Isogeometric Analysis in Computational Engineering, Inclusion detection, Classificació AMS::68 Computer science::68U Computing methodologies and applications, I.3.5, Bichromatic separability, Shape Optimization, Mesh Generation Algorithms, Orientation (vector space), Lower bounds, Restricted orientation convex hulls, Computer Graphics and Computer-Aided Design, Computer science, 68U05, Algorithm, Regular polygon, Àrees temàtiques de la UPC::Matemàtiques i estadística::Matemàtica aplicada a les ciències, Combinatorics, Computer Science, Physical Sciences, Convex hull, Computer Science - Computational Geometry, Computer Vision and Pattern Recognition, Mathematics

File Description: application/pdf

Access URL: http://arxiv.org/abs/2209.04258
https://hdl.handle.net/2117/374944
https://doi.org/10.1007/s10898-022-01238-9
https://arxiv.org/abs/2209.04258

Optimal in-place compaction of sliding cubes

Authors: Kostitsyna, Irina Ophelders, Tim Parada Muñoz, Irene María de et al.

Contributors: Kostitsyna, Irina Ophelders, Tim Parada Muñoz, Irene María de et al.

Subject Terms: Àrees temàtiques de la UPC::Matemàtiques i estadística::Anàlisi matemàtica, Àrees temàtiques de la UPC::Informàtica, Numerical analysis, Computing methodologies, Sliding cubes, Reconfiguration algorithm, Modular robots, Anàlisi numèrica, Informàtica, Classificació AMS::65 Numerical analysis::65D Numerical approximation and computational geometry, Classificació AMS::68 Computer science::68U Computing methodologies and applications

File Description: application/pdf

Relation: https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.SWAT.2024.31; https://arxiv.org/abs/2312.15096; http://hdl.handle.net/2117/424032

Availability: http://hdl.handle.net/2117/424032
https://arxiv.org/abs/2312.15096
https://doi.org/10.4230/LIPIcs.SWAT.2024.31

Dynamic embeddings of dynamic single-source upward planar graphs

Authors: van der Hoog, Ivor Parada Muñoz, Irene María de Rotenberg, Eva et al.

Contributors: van der Hoog, Ivor Parada Muñoz, Irene María de Rotenberg, Eva et al.

Subject Terms: Àrees temàtiques de la UPC::Matemàtiques i estadística::Matemàtica discreta::Teoria de grafs, Àrees temàtiques de la UPC::Informàtica, Graph theory, Computer science--Mathematics, Computing Methodologies, Dynamic graphs, Data structures, Computational geometry, Graph drawing, Graph algorithms, Upward planarity, Grafs, Teoria de, Informàtica--Matemàtica, Informàtica, Classificació AMS::05 Combinatorics::05C Graph theory, Classificació AMS::68 Computer science::68R Discrete mathematics in relation to computer science, Classificació AMS::68 Computer science::68U Computing methodologies and applications

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Relation: https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.ESA.2024.70; info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2019-104129GB-I00/ES/TEORIA Y APLICACIONES DE CONFIGURACIONES DE PUNTOS Y REDES/; https://arxiv.org/abs/2209.14094; http://hdl.handle.net/2117/421904

Availability: http://hdl.handle.net/2117/421904
https://arxiv.org/abs/2209.14094
https://doi.org/10.4230/LIPIcs.ESA.2024.70

Properties, Extensions and Application of Piecewise Linearization for Euclidean Norm Optimization in $$\mathbb {R}^2$$: Properties, extensions and application of piecewise linearization for Euclidean norm optimization in \(\mathbb{R}^2\)

Authors: Duguet, Aloïs Artigues, Christian Houssin, Laurent et al.

Contributors: Duguet, Aloïs Artigues, Christian Houssin, Laurent et al.

Source: Journal of Optimization Theory and Applications. 195:418-448

Subject Terms: Asymptotic approximations, asymptotic expansions (steepest descent, etc.), Computing methodologies and applications, approximation guarantee, Euclidean Norm Linearization, Approximation Guarantee, Euclidean norm linearization, 0211 other engineering and technologies, multibeam satellites, 0102 computer and information sciences, 02 engineering and technology, mixed integer linear programming, 01 natural sciences, [INFO.INFO-RO] Computer Science [cs]/Operations Research [math.OC], Numerical approximation and computational geometry (primarily algorithms), Multibeam Satellites, Mixed Integer Linear Programming, Mixed integer programming, mixed integer nonlinear programming, [INFO.INFO-RO]Computer Science [cs]/Operations Research [math.OC], Mixed Integer Nonlinear Programming

File Description: application/xml; application/pdf

Access URL: https://hal.science/hal-03356034v4/document
https://hal.science/hal-03356034v4
https://doi.org/10.1007/s10957-022-02083-2

Nonlinear dimensionality reduction for parametric problems: A kernel proper orthogonal decomposition

Authors: Díez, Pedro Muixí Ballonga, Alba Zlotnik, Sergio et al.

Contributors: Díez, Pedro Muixí Ballonga, Alba Zlotnik, Sergio et al.

Source: UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)

Subject Terms: Reduced-order models, observability, 0211 other engineering and technologies, Control::93B Controllability, Matemàtiques i estadística::Matemàtica aplicada a les ciències [Àrees temàtiques de la UPC], 02 engineering and technology, Control::93B Controllability, observability, and system structure, 60H35, 62-08, Computing Methodologies, 01 natural sciences, Sistemes de control, Informàtica, 0103 physical sciences, FOS: Mathematics, 68 Computer science::68U Computing methodologies and applications [Classificació AMS], Mathematics - Numerical Analysis, Classificació AMS::93 Systems Theory, System theory, Àrees temàtiques de la UPC::Matemàtiques i estadística::Investigació operativa::Simulació, 93 Systems Theory [Classificació AMS], Classificació AMS::68 Computer science::68U Computing methodologies and applications, Nonlinear multidimensionality reduction, Numerical Analysis (math.NA), and system structure, 93B Controllability, observability, and system structure [Control], kPCA, Matemàtiques i estadística::Investigació operativa::Simulació [Àrees temàtiques de la UPC], Àrees temàtiques de la UPC::Matemàtiques i estadística::Matemàtica aplicada a les ciències, Parametric problems

File Description: application/pdf

Access URL: https://onlinelibrary.wiley.com/doi/pdfdirect/10.1002/nme.6831
http://arxiv.org/abs/2104.13765
https://onlinelibrary.wiley.com/doi/10.1002/nme.6831
https://dblp.uni-trier.de/db/journals/corr/corr2104.html#abs-2104-13765
https://arxiv.org/abs/2104.13765
https://hdl.handle.net/2117/361458
https://doi.org/10.1002/nme.6831

An overlapping domain decomposition method for the solution of parametric elliptic problems via proper generalized decomposition

Authors: Discacciati, Marco Evans, Ben J. Giacomini, Matteo et al.

Contributors: Discacciati, Marco Evans, Ben J. Giacomini, Matteo et al.

Subject Terms: Àrees temàtiques de la UPC::Matemàtiques i estadística::Àlgebra::Teoria de nombres, Àrees temàtiques de la UPC::Matemàtiques i estadística::Matemàtica aplicada a les ciències, Arithmetical algebraic geometry, Computing Methodologies, Reduced order models, Proper generalized decomposition, Domain decomposition methods, Overlapping Schwarz method, Non-intrusiveness, Geometria algèbrica--Aritmètica, Informàtica, Classificació AMS::11 Number theory::11G Arithmetic algebraic geometry (Diophantine geometry), Classificació AMS::68 Computer science::68U Computing methodologies and applications

File Description: application/pdf

Relation: https://www.sciencedirect.com/science/article/pii/S0045782523006084; info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2020-113463RB-C33/ES/MACHINE LEARNING FOR DATA-DRIVEN MODELING/; Discacciati, M.; Evans, B.J.; Giacomini, M. An overlapping domain decomposition method for the solution of parametric elliptic problems via proper generalized decomposition. "Computer methods in applied mechanics and engineering", 1 Gener 2024, vol. 418, núm. article 116484.; http://hdl.handle.net/2117/406500

Availability: http://hdl.handle.net/2117/406500
https://doi.org/10.1016/j.cma.2023.116484

Research on particle collision forward search algorithm and CFD–DEM variable time step coupling calculation method: Research on particle collision forward search algorithm and CFD-dem variable time step coupling calculation method

Authors: Xuemei Li Ming Wang Dandan Sun et al.

Source: Acta Mechanica. 233:4919-4937

Subject Terms: Computing methodologies and applications, 4. Education, 11. Sustainability, 0103 physical sciences, Basic methods in fluid mechanics, Multiphase and multicomponent flows, 02 engineering and technology, 0204 chemical engineering, 7. Clean energy, 01 natural sciences

File Description: application/xml

Access URL: https://www.researchsquare.com/article/rs-1046946/v1.pdf?c=1638321821000
https://zbmath.org/7612111
https://doi.org/10.1007/s00707-022-03358-5
https://www.researchsquare.com/article/rs-1046946/v1