Results 31 to 40 of about 3,720,590 (347)

Achieving Geometric Convergence for Distributed Optimization Over Time-Varying Graphs [PDF]

open access: yesSIAM Journal on Optimization, 2016
This paper considers the problem of distributed optimization over time-varying graphs. For the case of undirected graphs, we introduce a distributed algorithm, referred to as DIGing, based on a combination of a distributed inexact gradient method and a ...
A. Nedić, Alexander Olshevsky, Wei Shi
semanticscholar   +1 more source

Accelerating federated learning via momentum gradient descent [PDF]

open access: yes, 2019
Federated learning (FL) provides a communication-efficient approach to solve machine learning problems concerning distributed data, without sending raw data to a central server. However, existing works on FL only utilize first-order gradient descent (GD)
Chen, Li   +3 more
core   +2 more sources

Deep tissue penetration of nanoparticles using pulsed-high intensity focused ultrasound

open access: yesNano Convergence, 2017
Recently, ultrasound (US)-based drug delivery strategies have received attention to improve enhanced permeation and retention (EPR) effect-based passive targeting efficiency of nanoparticles in vitro and in vivo conditions.
Dong Gil You   +7 more
doaj   +1 more source

Topological convergence and uniform convergence [PDF]

open access: yesCzechoslovak Mathematical Journal, 1987
For uniform spaces X and Y the author studies the following convergences on the set of all mappings from X to Y: Uniform convergence, uniform convergence on compacta, pointwise convergence, Hausdorff convergence, Leader convergence, topological convergence and proximal convergence.
openaire   +2 more sources

Loosely-bound low-loss surface plasmons in hyperbolic metamaterial

open access: yesNano Convergence, 2018
Surface plasmons (SPs) carry electromagnetic energy in the form of collective oscillation of electrons at metal surface and commonly demonstrate two important features: strong lateral confinement and short propagation lengths.
Yu Shi, Hong Koo Kim
doaj   +1 more source

Microvascularized tumor organoids-on-chips: advancing preclinical drug screening with pathophysiological relevance

open access: yesNano Convergence, 2021
Recent developments of organoids engineering and organ-on-a-chip microfluidic technologies have enabled the recapitulation of the major functions and architectures of microscale human tissue, including tumor pathophysiology.
Jungeun Lim   +4 more
doaj   +1 more source

Order Convergence and Topological Convergence [PDF]

open access: yesProceedings of the American Mathematical Society, 1965
In a complete lattice it is possible to define a notion of convergence (for arbitrary nets) known as order convergence (o-convergence) ; for definitions see [l,p.5°]and [3, p. 65]. As a general rule o-convergence is not a topological convergence; i.e., the lattice cannot be topologized so that nets o-converge if and only if they converge with respect ...
openaire   +3 more sources

Shape-altering flexible plasmonics of in-situ deformable nanorings

open access: yesNano Convergence, 2023
Nanorings (NRs) with their intrinsic cavities have attracted interest as plasmonic nanoparticles for years, due to the uniform electric field enhancement inside the cavity, lower plasmon damping effects and comparatively high refractive index ...
Wei Tao   +4 more
doaj   +1 more source

Strong convergence of some drift implicit Euler scheme. Application to the CIR process [PDF]

open access: yes, 2012
We study the convergence of a drift implicit scheme for one-dimensional SDEs that was considered by Alfonsi for the Cox-Ingersoll-Ross (CIR) process. Under general conditions, we obtain a strong convergence of order 1.
Alfonsi, Aurélien
core   +6 more sources

Inner structure- and surface-controlled hollow MnO nanocubes for high sensitive MR imaging contrast effect

open access: yesNano Convergence, 2020
Manganese oxide (MnO) nanocubes were fabricated and their surface were modified by ligand encapsulation or ligand exchange, to render them water-soluble. And then, MnO formed the hollow structure by etching using acidic solution (phthalate buffer, pH 4.0)
Aastha Kukreja   +8 more
doaj   +1 more source

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