Results 81 to 90 of about 63,174 (260)
A fast continuous time approach with time scaling for nonsmooth convex optimization. [PDF]
Adv Contin Discret Model, 2022 Boţ RI, Karapetyants MA.
europepmc +1 more source
In the literature, methods for the construction of piecewise linear upper and lower bounds for the approximation of univariate convex functions have been proposed.We study the effect of the use of increasing convex or increasing concave transformations ...
Siem, A.Y.D. +2 more
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Advanced Science, EarlyView.This study combines full‐field tomography with diffraction mapping to quantify radial (ε002$\varepsilon _{002}$) and axial (ε100$\varepsilon _{100}$) lattice strain in wrinkled carbon‐fiber specimens for the first time. Radial microstrain gradients (−14.5 µεMPa$\varepsilon \mathrm{MPa}$−1) are found to signal damage‐prone zones ahead of failure, which ...
Hoang Minh Luong +7 more
wiley +1 more source
Parameter Selection for Convex Optimization Time Calibration for a 2-Panel PET System. [PDF]
Proc SPIE Int Soc Opt Eng, 2023 Romanchek G, Abbaszadeh S.
europepmc +1 more source
On a conic approach to convex analysis.
. The aim of this paper is to make an attempt to justify the main results from Convex Analysis by one elegant tool, the conification method, which consists of three steps: conify, work with convex cones, deconify.
Brinkhuis, J.
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Double smoothing technique for infinite-dimensional optimization problems with applications to optimal control [PDF]
In this paper, we propose an efficient technique for solving some infinite-dimensional problems over the sets of functions of time. In our problem, besides the convex point-wise constraints on state variables, we have convex coupling constraints with ...
GLINEUR, François +2 more
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Exact penalties for decomposable convex optimization problems
, 2021 We consider a general decomposable convex optimization problem. By using right-hand side allocation technique, it can be transformed into a collection of small dimensional optimization problems.
Konnov I.V.
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Neural Fields for Highly Accelerated 2D Cine Phase Contrast MRI
Advanced Science, EarlyView.ABSTRACT 2D cine phase contrast (CPC) MRI provides quantitative information on blood velocity and flow within the human vasculature. However, data acquisition is time‐consuming, motivating the reconstruction of the velocity field from undersampled measurements to reduce scan times. In this work, neural fields are proposed as a continuous spatiotemporal
Pablo Arratia +7 more
wiley +1 more source
Convex optimization algorithms in medical image reconstruction-in the age of AI. [PDF]
Phys Med Biol, 2022 Xu J, Noo F.
europepmc +1 more source
Consumption and Investment Optimization under Constraints [PDF]
We analyze a problem of maximization of expected terminal wealth and consumption under constraints in a general framework including financial models with constrained portfolios, labor income and large investor models.
Long Nguyen-Thanh
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