Výsledky vyhledávání

A sequential optimality condition for Mathematical Programs with equilibrium constraints based on a nonsmooth formulation

Autor: Elias S Helou, Sandra A Santos, Lucas E A Simões

Publikováno v: Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP

Explicitly nonsmooth reformulations of mathematical programs with equilibrium constraints (MPEC) described by smooth functions are investigated. A sequential optimality condition ($\epsilon $-ANOC) previously developed for nonsmooth optimization prob

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::15845e07177b31cf9d2e835d9f50e8d3
https://doi.org/10.1093/imanum/drac016

Zobrazit plný text záznamu

Derivative-free superiorization: principle and algorithm

Autor: Yair Censor, Gabor T. Herman, Elias S. Helou, Edgar Garduño

Publikováno v: Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP

The superiorization methodology is intended to work with input data of constrained minimization problems, that is, a target function and a set of constraints. However, it is based on an antipodal way of thinking to what leads to constrained minimizat

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8bbac2887f1ab967862be841721ce832
https://doi.org/10.1007/s11075-020-01038-w

Zobrazit plný text záznamu

Analysis of a New Sequential Optimality Condition Applied to Mathematical Programs with Equilibrium Constraints

Autor: Lucas E. A. Simões, Sandra A. Santos, Elias S. Helou

Publikováno v: Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP

In this study, a novel sequential optimality condition for general continuous optimization problems is established. In the context of mathematical programs with equilibrium constraints, the condition is proved to ensure Clarke stationarity. Originall

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ccec9b384a6cbc459d2357e53f17db05
https://doi.org/10.1007/s10957-020-01658-1

Zobrazit plný text záznamu

A New Sequential Optimality Condition for Constrained Nonsmooth Optimization

Autor: Lucas E. A. Simões, Elias S. Helou, Sandra A. Santos

Publikováno v: Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP

We introduce a sequential optimality condition for locally Lipschitz constrained nonsmooth optimization, verifiable just using derivative information, and which holds even in the absence of any con...

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6bc32c281d73e7cedc8e1c42ef54c971
https://doi.org/10.1137/18m1228608

Zobrazit plný text záznamu

Monotone FISTA With Variable Acceleration for Compressed Sensing Magnetic Resonance Imaging

Autor: Marcelo V. W. Zibetti, Gabor T. Herman, Elias S. Helou, Ravinder R. Regatte

Publikováno v: Web of Science
Repositório Institucional da UNESP
Universidade Estadual Paulista (UNESP)
instacron:UNESP
Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP

Made available in DSpace on 2019-10-04T11:56:54Z (GMT). No. of bitstreams: 0 Previous issue date: 2019-03-01 NIH Center of Advanced Imaging Innovation and Research (CAI2R) NIBIB Biomedical Technology Resource Center Fundação de Amparo à Pesquisa d

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f1a7c44f6d9fb11edbbefe0dfe157f67
https://doi.org/10.1109/tci.2018.2882681

Zobrazit plný text záznamu

Reduced-Order Methods in Medical Imaging

Autor: Nicole Hemming-Schroeder, Thomas O. Freeze, C.H. Lee, Saifon Chaturantabut, Elias S. Helou

Publikováno v: Model Reduction of Complex Dynamical Systems ISBN: 9783030729820

With technological advances and increasing demand for finer resolution images, tomographic medical imaging can be a huge computational problem, consequently, the processing time for image construction can be prohibitively large and impractical for re

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::db65d428c519f5ae288093715e547578
https://doi.org/10.1007/978-3-030-72983-7_11

Zobrazit plný text záznamu

Akademický článek

Detection of Cryptococcus neoformans capsular polysaccharide antigen in asymptomatic HIV-infected patients Detección del antígeno capsular del Cryptococcus neoformans en pacientes asintomáticos infectados por HIV

Autor: R. Negroni, C. Cendoya, A.I. Arechavala, A.M. Robles, M. Bianchi, A.J. Bava, S. Helou

Publikováno v: Revista do Instituto de Medicina Tropical de São Paulo, Vol 37, Iss 5, Pp 385-389 (1995)

Serum samples from 242 HIV-positive persons were studied for the detection of capsular polysaccha-ride antigen of Cryptococcus neoformans; 193 of these patients presented less than 300 CD4+ cells/µl of blood and 49 patients had more than 300 CD4+ ce

Externí odkaz: https://doaj.org/article/281feccf1c4d49db969da7276bcafec8

Zobrazit plný text záznamu

Fast multicomponent 3D‐ T 1ρ relaxometry

Autor: Azadeh Sharafi, Ravinder R. Regatte, Marcelo V. W. Zibetti, Elias S. Helou

Publikováno v: Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP

NMR relaxometry can provide information about the relaxation of the magnetization in different tissues, increasing our understanding of molecular dynamics and biochemical composition in biological systems. In general, tissues have complex and heterog

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::721c6ce9844d370412f8fbc82ae6d054
https://doi.org/10.1002/nbm.4318

Zobrazit plný text záznamu

Vyhledávací nástroje:

Upřesnit hledání