Results 11 to 20 of about 115,766 (266)

Polysegmental and multilevel lesions in hematogenous vertebral osteomyelitis: assessment of immediate and long-term results

open access: yesХирургия позвоночника, 2023
Objective. To analyze the results of treatment of disseminated (polysegmental and multilevel) forms of hematogenous vertebral osteomyelitis (HVO) as compared with those of monosegmental and monovertebral lesions. Material and Methods.
Aleksandr Yu. Bazarov   +2 more
doaj   +1 more source

Geografiske forskjeller i uføres dødelighet: Levekår, seleksjon, sosial avstand?

open access: yesTidsskrift for Samfunnsforskning, 2010
Geografiske forskjeller i uføres dødelighet: Levekår, seleksjon, sosial avstand? De uføretrygdedes overdødelighet er et sosialpolitisk problem, og helsesvikten som grunnga trygdingen forklarer ikke fullt ut den høye dødeligheten.
Jon Ivar Elstad
doaj   +1 more source

An Overview of Interrater Agreement on Likert Scales for Researchers and Practitioners

open access: yesFrontiers in Psychology, 2017
Applications of interrater agreement (IRA) statistics for Likert scales are plentiful in research and practice. IRA may be implicated in job analysis, performance appraisal, panel interviews, and any other approach to gathering systematic observations ...
Thomas A. O'Neill
doaj   +1 more source

Optimization Methods to Reduce Capacitor Stress in Modular Multilevel Converters

open access: yesIEEE Access, 2020
Modular multilevel converters consist of many capacitor half-bridge or full-bridge converter cells. Stresses on the capacitors result from peak capacitor voltage, capacitor voltage ripple and current ripple.
Nikola Petranovic   +3 more
doaj   +1 more source

A Novel Seven Level Inverter with Reduced Switch Count and THD for PV System Applications [PDF]

open access: yesE3S Web of Conferences
Based on economic, controllability and total harmonic distortion (THD) Multilevel inverters are more rising devices in many applications compare to other traditional inverters.
Venkateswarlu M.   +4 more
doaj   +1 more source

Bayesian multilevel multivariate logistic regression for superiority decision-making under observable treatment heterogeneity

open access: yesBMC Medical Research Methodology, 2023
Background In medical, social, and behavioral research we often encounter datasets with a multilevel structure and multiple correlated dependent variables.
Xynthia Kavelaars   +2 more
doaj   +1 more source

Multilevel Monte Carlo methods for ensemble variational data assimilation [PDF]

open access: yesNonlinear Processes in Geophysics
Ensemble variational data assimilation relies on ensembles of forecasts to estimate the background error covariance matrix B. The ensemble can be provided by an ensemble of data assimilations (EDA), which runs independent perturbed data assimilation and ...
M. Destouches   +10 more
doaj   +1 more source

Multilevel Monte Carlo methods [PDF]

open access: yesActa Numerica, 2013
Monte Carlo methods are a very general and useful approach for the estimation of expectations arising from stochastic simulation. However, they can be computationally expensive, particularly when the cost of generating individual stochastic samples is very high, as in the case of stochastic PDEs.
openaire   +3 more sources

A multilevel discontinuous Galerkin method [PDF]

open access: yesNumerische Mathematik, 2003
With extended references to the major papers on the subject, this work analyzes mathematically multigrid techniques for two discontinuous Galerkin methods: one for elliptic problems and a second one for singular perturbed advection-diffusion problems. In the former case, the analysis predicts convergence rates of the multigrid method independent of the
Jay Gopalakrishnan, Guido Kanschat
openaire   +3 more sources

An efficient approach for optimal multilevel thresholding selection for gray scale images based on improved differential search algorithm

open access: yesAin Shams Engineering Journal, 2018
Segmentation is one of the important steps for image analysis. Multilevel thresholding image segmentation was more popular in image segmentation. Otsu and Kapur based methods are most popular for multilevel threshold image segmentation.
Sowjanya Kotte   +2 more
doaj   +1 more source

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