Results 41 to 50 of about 3,741,721 (286)

String Method for Generalized Gradient Flows: Computation of Rare Events in Reversible Stochastic Processes [PDF]

open access: yes, 2019
Rare transitions in stochastic processes can often be rigorously described via an underlying large deviation principle. Recent breakthroughs in the classification of reversible stochastic processes as gradient flows have led to a connection of large ...
Grafke, Tobias
core   +2 more sources

A Gradient-Based Particle-Bat Algorithm for Stochastic Configuration Network

open access: yesApplied Sciences, 2023
Stochastic configuration network (SCN) is a mathematical model of incremental generation under a supervision mechanism, which has universal approximation property and advantages in data modeling. However, the efficiency of SCN is affected by some network
Jingjing Liu, Yefeng Liu, Qichun Zhang
doaj   +1 more source

Passive Control of Silane Diffusion for Gradient Application of Surface Properties

open access: yesMicromachines, 2021
Liquid lithography represents a robust technique for fabricating three-dimensional (3D) microstructures on a two-dimensional template. Silanization of a surface is often a key step in the liquid lithography process and is used to alter the surface energy
Riley L. Howard   +5 more
doaj   +1 more source

Rigidity of asymptotically conical shrinking gradient Ricci solitons [PDF]

open access: yes, 2013
We show that if two gradient Ricci solitons are asymptotic along some end of each to the same regular cone, then the soliton metrics must be isometric on some neighborhoods of infinity of these ends. Our theorem imposes no restrictions on the behavior of
Brett Kotschwar   +2 more
core  

Adaptive Restart of the Optimized Gradient Method for Convex Optimization

open access: yes, 2017
First-order methods with momentum such as Nesterov's fast gradient method are very useful for convex optimization problems, but can exhibit undesirable oscillations yielding slow convergence rates for some applications.
Fessler, Jeffrey A., Kim, Donghwan
core   +1 more source

Predicting Chronicity in Children and Adolescents With Newly Diagnosed Immune Thrombocytopenia at the Timepoint of Diagnosis Using Machine Learning‐Based Approaches

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Objectives To identify predictors of chronic ITP (cITP) and to develop a model based on several machine learning (ML) methods to estimate the individual risk of chronicity at the timepoint of diagnosis. Methods We analyzed a longitudinal cohort of 944 children enrolled in the Intercontinental Cooperative immune thrombocytopenia (ITP) Study ...
Severin Kasser   +6 more
wiley   +1 more source

Assessment of physical condition and anthropogenic disturbance of streams of the northcentral United States

open access: yesJournal of Freshwater Ecology, 2021
The recent introduction of large geospatial databases and virtual measurement devices for streams of the United States have the potential to greatly improve stream classification systems as well as answer fundamental questions about river morphology. The
David C. Houghton
doaj   +1 more source

Planar cell polarity: intracellular asymmetry and supracellular gradients of Dachsous

open access: yesOpen Biology, 2022
The slope of a supracellular molecular gradient has long been thought to orient and coordinate planar cell polarity (PCP). Here we demonstrate and measure that gradient.
Adrià Chorro   +5 more
doaj   +1 more source

DELP Treatment on Vision and Retinal Microcirculation in Patients With Acute Ischemic Stroke: Report of Five Cases and Literature Review

open access: yesTherapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Background The delipid extracorporeal lipoprotein filter from plasma (DELP) treatment can effectively reduce blood lipid, increase blood flow, and improve neurological deficits in patients with acute ischemic stroke (AIS). However, its effect on vision and retinal microcirculation in stroke patients has never been reported.
Ning Li   +9 more
wiley   +1 more source

An aperture’s amplitude-phase distribution for forming frequency-independent direction-finding characteristics of a linear antenna arrays

open access: yesФизика волновых процессов и радиотехнические системы, 2019
The apertures amplitude-phase distribution of a linear antenna array, ensuring the formation of frequency-independent direction-finding characteristics in a wide frequency band, is considered.
N.I. Bobkov   +2 more
doaj   +1 more source

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