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Proximal Methods with Bregman Distances to Solve VIP on Hadamard Manifolds with Null Sectional Curvature

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Journal of the Operations Research Society of China 2021年第3期9卷 499-523页

作者： Erik Alex Papa quiroz Paulo Roberto Oliveira Universidad Nacional Mayor de San Marcos Universidad Privada del NorteLimaPeru PESC-COPPE Federal University of Rio de JaneiroRio de Janeiro CEP 21941-972Brazil

We present an extension of the proximal point method with Bregman distances to solve variational inequality problems(VIP)on Hadamard manifolds with null sectional *** some natural assumptions,as for example,the existence of solutions of the VIP and the monotonicity of the multivalued vector field,we prove that the sequence of the iterates given by the method converges to a solution of the ***,this convergence is linear or superlinear with respect to the Bregman distance.

关键词： Proximal point methods Hadamard manifolds Bregman distances Variational inequality problems Monotone vector field

On the Convergence Rate of an Inexact Proximal Point Algorithm for Quasiconvex Minimization on Hadamard Manifolds

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Journal of the Operations Research Society of China 2017年第4期5卷 457-467页

作者： Nancy Baygorrea Erik Alex Papa quiroz Nelson Maculan Federal University of Rio de Janeiro PESC-COPPE-UFRJPO Box 68511Rio de Janeiro CEP 21941-972Brazil

In this paper,we present an analysis about the rate of convergence of an inexact proximal point algorithm to solve minimization problems for quasiconvex objective functions on Hadamard *** prove that under natural assumptions the sequence generated by the algorithm converges linearly or superlinearly to a critical point of the problem.

关键词： Proximal point method Quasiconvex function Hadamard manifolds Nonsmooth optimization Abstract subdifferential Convergence rate

Inexact Proximal Point Methods for Quasiconvex Minimization on Hadamard Manifolds

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Journal of the Operations Research Society of China 2016年第4期4卷 397-424页

作者： Nancy Baygorrea Erik Alex Papa quiroz Nelson Maculan Federal University of Rio de Janeiro PESC-COPPE-UFRJPO Box 68511Rio de Janeiro CEP 21941-972Brazil

In this paper we present two inexact proximal point algorithms to solve minimization problems for quasiconvex objective functions on Hadamard *** prove that under natural assumptions the sequence generated by the algorithms are well defined and converge to critical points of the *** also present an application of the method to demand theory in economy.

关键词： Proximal point method Quasiconvex function Hadamard manifolds Nonsmooth optimization Abstract subdifferential

An Inexact Proximal Method with Proximal Distances for Quasimonotone Equilibrium Problems

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Journal of the Operations Research Society of China 2017年第4期5卷 545-561页

作者： Lennin Mallma Ramirez Erik Alex Papa quiroz P.R.Oliveira Coordenação dos Programas de Pós-gaduação em Engenharia-Programa de Engenharia de Sistemas e Computação Federal University of Rio de JaneiroRio of JaneiroBrazil Mayor de San Marcos National University LimaPeru

In this paper,we propose an inexact proximal point method to solve equilibrium problems using proximal distances and the diagonal *** some natural assumptions on the problem and the quasimonotonicity condition on the... 详细信息

关键词： Equilibrium problems Quasimonotonicity Proximal distance Proximal method

Identifying disappeared historic buildings of port of Callao using georeferencing

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Built Heritage 2023年第4期7卷 1-15页

作者： Diego Javier Celis Estrada Francisco Felipe quiroz Chueca Ruth Aracelis Manzanares Grados Faculty of Architecture and Design Universidad Privada del NorteLimaPeru Research Group GIADIPS Faculty of Architecture and DesignUniversidad Privada del NorteLimaPeru Department of History Universidad Nacional Mayor de San MarcosLima15081Peru Directorate for Research Innovation and Social ResponsibilityUniversidad Privada del NorteLimaPeru

The port of Callao is important for its varied historical and archaeological heritage,which includes several military buildings that were the main actors and witnesses of the colonial era of Peru(from the 16th century to the country’s independence from Spain early in the 19th century).Despite the studies that have been carried out on the basis of documents and some eventual archaeological excavations,the port’s main monument,namely,the Real Felipe Fortress,continues to hide very important information that could be used to understand the role that the fortress played in numerous historical events throughout the *** main contribution of this study is the use of photogrammetry software and a Geographic Information System(GIS)to examine the Real Felipe *** this way,the nature of the atypical construction within the fortress is *** a result,it is possible to accurately establish the location of the defensive wall that surrounded the ancient city of Callao,as well as its first churches,whose records were lost after being destroyed by the 1746 earthquake and tsunami in Lima,the worst cataclysm registered in the history of Peru and South *** a result,this study demonstrates that technology can be successfully used to establish and validate with great precision the existence of the location of churches that have been built in the port of Callao since the founding of Lima in the 16th *** identification allows architects,engineers and students who are interested in the history of monuments to discover hidden structures and buildings and carry out the necessary restoration and archaeological works,with the aim of recovering the history of the colonial architecture of Callao and other similar cities and ports worldwide.

关键词： georeferencing Viceroyalty of Peru church military buildings port of Callao cultural heritage

Assessment of posterior vitreous detachment on enhanced high density line optical coherence tomography

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International Journal of Ophthalmology(English edition) 2017年第1期10卷 165-167页

作者： yu Cheol Kim Mariana Harasawa Frank S Siringo Hugo quiroz-Mercado Department of Ophthalmology University of Colorado Schoolof MedicineRocky Mountains Lions Eye InstituteAurora 80045USA Department of Ophthalmology University of Colorado School of MedicineDenver Health Medical CenterDenver 80204USA Department of Ophthalmology Keimyung University School of MedicineDongsan Medical CenterDaegu 41931Korea

The state of the vitreo-retinal interface affects various retinal diseases, and the presence or absence of a posterior vitreous detachment （PVD） is one of the most important factors. As such, various studies studyin... 详细信息

关键词： line PPVP PVD Assessment of posterior vitreous detachment on enhanced high density line optical coherence tomography Figure high

Surgical Approaches in Primary Rhegmatogenous Retinal Detachment: A Systematic Review and Meta-Analysis Comparing Vitrectomy vs. Vitrectomy Combined with Scleral Buckling, Lens-Sparing vs. Phako Procedures

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Open Journal of Ophthalmology 2023年第4期13卷 371-397页

作者： Miguel A. quiroz-Reyes Erick A. quiroz-Gonzalez Miguel A. quiroz-Gonzalez Virgilio Lima-Gomez Retina Department of Oftalmologia Integral ABC Medical and Surgical Assistance Institution (Nonprofit Organization) Affiliated with the Postgraduate Studies Division at the National Autonomous University of Mexico Mexico City Mexico Institute of Ophthalmology Medical and Surgical Assistance Institution (Nonprofit Organization) Affiliated with the Postgraduate Studies Division at the National Autonomous University of Mexico Mexico City Mexico Juarez Hospital Public Assistance Institution (Nonprofit Organization) Mexico City Mexico

Aim: This study aimed to assess and compare the functional and anatomical results of pars plana vitrectomy (PPV) alone versus PPV combined with scleral buckling (SB), and lens-sparing versus phaco-procedures for treating rhegmatogenous retinal detachment. Methods: A comprehensive literature search was performed using the Web of Science, MEDLINE, EMBASE, and Cochrane Library databases to retrieve comparative studies. The main objective was to assess the BCVA, while reattachment rates and ocular adverse events were considered secondary measures. Rev Manager software was used for statistical analysis. Results: The literature search identified 10 articles comprising 1518 eyes, with 682 eyes in the PPV group, 193 eyes in the lens-sparing versus phaco-procedure group, and 643 eyes in the combined PPV and SB surgery group. Quality assessment revealed a low risk of bias in most domains. The meta-analysis results revealed a significant difference in postoperative BCVA between the PPV and PPV combined with SB groups (WMD = −0.17, 95% CI [0.27, 0.07], p = 0.001). The primary reattachment rates were 82.80% for PPV alone and 87.52% for PPV combined with SB (p = 0.34). The final reattachment rates did not differ significantly between PPV and PPV combined with SB (99% vs. 99.8%;RR = 1.00, 95% CI [1.01, 0.99], p = 0.96). PPV alone demonstrated a significantly reduced risk of macular edema compared to PPV combined with scleral buckling (9.9% vs. 23%;p = 0.006). The incidences of macular hole development (p = 0.46), recurrent retinal detachment (p = 0.27), proliferative vitreoretinopathy development (p = 0.48), epiretinal membrane proliferation (p = 0.77), and limited choroidal hemorrhage (p = 0.69) were not significantly different between the two groups. Conclusions: These findings suggest that PPV alone may be a more effective treatment option in terms of visual acuity (VA) improvement, lower risk of macular edema and cataract development. However, there was no significant differen

关键词： Lens-Sparing Phaco-Procedure Pars Plana Vitrectomy Rhegmatogenous Retinal Detachment Scleral Buckle

Effect of synthesis variables of plasma synthesized polymers on growth of HepG2 cells

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BIOCELL 2017年第2期41卷 41-43页

作者： ELIZABETH PEREZ-TEJADA JUAN MORALES-CORONA LUIS ERNESTO GOMEZ-quiroz MARIA CONCEPCIONGUTIERREZ-RUIZ ROBERTO OLAyO Departamento de Química.Universidad Autónoma Metropolitana Unidad IztapalapaApdo.Postal 55-534IztapalapaCDMXCP 09340 Departamento de Ciencias de la Salud.Universidad Autónoma Metropolitana Unidad IztapalapaApdo.Postal 55-534IztapalapaCDMXCP 09340 Departamento de Física.Universidad Autónoma Metropolitana Unidad IztapalapaApdo.Postal 55-534IztapalapaMéxicoD.F.CP 09340 CECyT No.8 Instituto Politécnico NacionalAve.de las Granjas 618Jardín AzpeitiaAzcapotzalcoCDMXCP 02530

Low pressure plasma polymer films were synthesized using pyrrole and allylamine monomers and adding iodine was used(or not)for the reaction in both *** were polymerized on glass substrates under the same reaction *** of allylamine was also studied at different operating *** thin polymer films were used as culture surfaces for HepG2 cells,a cell line derived from a human *** proliferation,differentiation and two-dimensional propagation until obtaining monolayer of the cells was studied on the different synthetized films and correlations were established between the conditions of synthesis,the physicochemical characteristics obtained and the performance as substrates for the cellular growth.

关键词： Hepatocytes Pyrrole Allylamine Plasma Polymerization

Long-Term Postoperative Perfusion Indices in Surgically Resolved Myopic Traction Maculopathy

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Open Journal of Ophthalmology 2023年第1期13卷 143-171页

作者： Miguel A. quiroz-Reyes Erick A. quiroz-Gonzalez Miguel A. quiroz-Gonzalez Virgilio Lima-Gomez Oftalmologia Integral ABC Retina Specialists Unit Medical and Surgical Assistance Institution (Nonprofit Organization) Affiliated with the Postgraduate Studies Division at the National Autonomous University of Mexico Mexico City Mexico Institute of Ophthalmology Fundacion Conde de Valenciana Private Assistance Institution (Nonprofit Organization) Mexico City Mexico Juarez Hospital Public Assistance Institution (Nonprofit Organization) Mexico City Mexico

Background: Pathological myopia can be complicated by the presence of posterior staphyloma, macular atrophy, ruptures in Bruch’s membrane, pathologic choroidal neovascularization, and different degrees of myopic traction maculopathy. Purpose: To report the structural, functional and perfusional outcomes in patients underwent surgery for different stages of myopic traction maculopathy (MTM). Methods: A retrospective, consecutive, comparative, interventional, one-surgeon, case-control study was conducted in 46 eyes of 34 individuals between April 2015 and May 2021. Participants included normal emmetropic eyes (Control emmetropia, n = 25), healthy myopic eyes (Control high myopia, n = 20), and operated and structurally fully resolved myopic eyes with different stages of MTM (Surgically treated group, n = 46). Long-term postoperative functional and perfusional follow-up evaluations were performed with spectral domain-optical coherence tomography (SD-OCT) and OCT angiography. The primary outcome measure included long-term functional, structural and perfusion macular status across groups. Results: Forty-six eyes in 34 patients were included in the study group, with both eyes affected in 12 (26.3%) patients. The mean axial length was 29.89 ± 1.67 mm. The preoperative logMAR was 1.29 ± 0.54 and the postoperative logMAR was 0.60 ± 0.52 (P Conclusion: Compared to emmetropic and healthy myopic eyes, surgically-resolved MTM eyes generally have larger superficial foveal avascular zone area, lower vessel density, smaller choriocapillaris flow area, thinner central subfoveal thickness, and more macular defects. Eyes with stage III or IV MTM had larger deviation compared to eyes at earlier stages. Visual function change after surgery was associated with superficial foveal avascular zone area. Better functional, structural and perfusion index outcomes were observed when highly myopic eyes underwent early surgery.

关键词： Choriocapillaris Flow Area Deep Vascular Plexus Foveoretinal Detachment Myopic Foveoschisis Foveal Avascular Zone Myopic Macular Hole