Results 91 to 100 of about 4,906,655 (367)

Nonlinear polarization evolution using time-dependent density functional theory

open access: yes, 2018
We propose a theoretical and computational approach to investigate temporal behavior of a nonlinear polarization in perturbative regime induced by an intense and ultrashort pulsed electric field.
Kuwabara, Yuki   +3 more
core   +1 more source

Portable Low‐Field Magnetic Resonance Imaging in People With Human Immunodeficiency Virus

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective The aging population of people with HIV (PWH) raises heightened concerns regarding accelerated aging and dementia. Portable, low‐field MRI (LF‐MRI) is an innovative technology that could enhance access and facilitate routine monitoring of PWH.
Annabel Sorby‐Adams   +14 more
wiley   +1 more source

A Note on Separable Nonlinear Least Squares Problem

open access: yes, 2011
Separable nonlinear least squares (SNLS)problem is a special class of nonlinear least squares (NLS)problems, whose objective function is a mixture of linear and nonlinear functions.
Al-Mushayt, Omar Saeed, Gharibi, Wajeb
core   +1 more source

Nonlinear Programming

open access: yesMathematical Programming Methods for Geographers and Planners, 2021
James Killen
semanticscholar   +1 more source

The McCance Brain Care Score and Mortality: Evidence From a Large‐Scale Population‐Based Cohort

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objectives This study aimed to examine the relationship between the McCance Brain Care Score (BCS) and mortality in the general population. Methods We conducted a prospective, population‐based cohort study using data from the UK Biobank. Participants with complete data enabling calculation of BCS and full mortality information were included ...
Zhiqiang Xu, Xiaoxiao Wang, Nan Li
wiley   +1 more source

H∞ Control of Nonlinear Systems: A Class of Controllers [PDF]

open access: yes, 1993
The standard state space solutions to the H∞ control problem for linear time invariant systems are generalized to nonlinear time-invariant systems.
Doyle, John C., Lu, Wei-Min
core  

Nonlinear phononics using atomically thin membranes

open access: yes, 2014
Phononic crystals and acoustic meta-materials are used to tailor phonon and sound propagation properties by facilitating artificial, periodic structures.
Croy, Alexander   +2 more
core   +1 more source

Prediction of Myasthenia Gravis Worsening: A Machine Learning Algorithm Using Wearables and Patient‐Reported Measures

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background Myasthenia gravis (MG) is a rare disorder characterized by fluctuating muscle weakness with potential life‐threatening crises. Timely interventions may be delayed by limited access to care and fragmented documentation. Our objective was to develop predictive algorithms for MG deterioration using multimodal telemedicine data ...
Maike Stein   +7 more
wiley   +1 more source

Influence of Yield Strength Variability over Cross-Section to Steel Beam Load-Carrying Capacity

open access: yesNonlinear Analysis, 2005
Authors of article analysed influence of variability of yield strength over cross-section of hot rolled steel member to its load-carrying capacity. In calculation models, the yield strength is usually taken as constant.
J. Kala, Z. Kala
doaj   +1 more source

Nonlinear metrology with a quantum interface

open access: yes, 2010
We describe nonlinear quantum atom-light interfaces and nonlinear quantum metrology in the collective continuous variable formalism. We develop a nonlinear effective Hamiltonian in terms of spin and polarization collective variables and show that model ...
Koschorreck M   +4 more
core   +1 more source

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