Results 61 to 70 of about 7,143,501 (298)

Spatial and Volumetric Characteristics of Glioblastoma: Associations With Clinical Presentation and Survival

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective We aim to comprehensively analyze how regional tumor and edema characteristics are associated with clinical presentations and survival outcomes in a large cohort of glioblastoma patients. Methods Patients with IDH‐wildtype glioblastoma who received brain MRI from 2010 to 2023 were included.
Daniel J. Zhou   +16 more
wiley   +1 more source

Canonical Duality-Triality Theory: Bridge Between Nonconvex Analysis/Mechanics and Global Optimization in Complex System

open access: yes, 2017
Canonical duality-triality is a breakthrough methodological theory, which can be used not only for modeling complex systems within a unified framework, but also for solving a wide class of challenging problems from real-world applications.
Ruan, Ning   +5 more
core   +1 more source

microRNA‐7‐5p and α‐Synuclein SAA Predict Parkinson's Disease Phenoconversion

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Corroborate blood neuron‐derived extracellular vesicle (NDEV) alpha‐synuclein (αSyn), the CSF αSyn seed amplification assay (αSyn‐SAA), and blood microRNA‐7‐5p (miR‐7‐5p) as markers for Parkinson's disease (PD) phenoconversion and determine if combining these markers would help select subjects who would be more likely to phenoconvert.
Shayan Zadegan   +4 more
wiley   +1 more source

Multiobjective Lagrangian duality for portfolio optimization with risk measures [PDF]

open access: yes
In this paper we present an application for a multiobjective optimization problem. The objective functions of the primal problem are the risk and the expected pain associated to a portfolio vector. Then, we present a Lagrangian dual problem for it.
Elisa Pagani
core  

Finding quadratic underestimators for optimal value functions of nonconvex all-quadratic problems via copositive optimization

open access: yesEURO Journal on Computational Optimization
Modeling parts of an optimization problem as an optimal value function that depends on a top-level decision variable is a regular occurrence in optimization and an essential ingredient for methods such as Benders Decomposition.
Markus Gabl, Immanuel M. Bomze
doaj   +1 more source

Topology optimization of a load-bearing structure via the method of convex linearization

open access: yesВестник Самарского университета: Аэрокосмическая техника, технологии и машиностроение, 2018
A method of topology optimization based on the convex linearization approach is proposed. The problem formulation implies minimization of the strain energy of a structure subject to volume constraint.
E. A. Kishov, V. A. Komarov
doaj   +1 more source

Duality Theory in Continuous-Time Linear Optimization

open access: yesProceeding Series of the Brazilian Society of Computational and Applied Mathematics, 2020
In this work, classical results from duality theory are obtained for continuous-time linear optimization problems with inequality constraints. Weak and strong duality properties, as well as, the complementary slackness theorem are established.
openaire   +2 more sources

Pain and Patient‐Reported Physical Function Did Not Differ Among Body Composition Profiles in Patients With Hip Osteoarthritis

open access: yesArthritis Care &Research, EarlyView.
Objective To explore whether higher body fat and lower lean mass are associated with greater pain and worse patient‐reported physical function in individuals with hip osteoarthritis (OA). A secondary aim was to examine whether pain and patient‐reported physical function differ according to four body composition profiles: high body fat, low lean mass ...
Alexandra Ryan   +10 more
wiley   +1 more source

Duality and calculi without exceptions for convex objects [PDF]

open access: yes
The aim of this paper is to make a contribution to theinvestigation of the roots and essence of convex analysis, and tothe development of the duality formulas of convex calculus.
Brinkhuis, J.
core  

Canonical Duality Theory for Solving Nonconvex/Discrete Constrained Global Optimization Problems

open access: yes, 2017
This paper presents a canonical duality theory for solving general nonconvex/discrete constrained minimization problems. By using the canonical dual transformation, these challenging problems can be reformulated as a unified canonical dual problem (i.e.,
Ruan, Ning   +3 more
core   +1 more source

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