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Rank Test Based On Matrix Perturbation Theory [PDF]

In this paper, we propose methods of the determination of the rank of matrix. We consider a rank test for an unobserved matrix for which an estimate exists having normal asymptotic distribution of order N1/2 where N is the sample size. The test statistic
Zaka Ratsimalahelo
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A remark on the similarity and perturbation problems [PDF]

, 2013
In this note we show that Kadison's similarity problem for C*-algebras is equivalent to a problem in perturbation theory: must close C*-algebras have close ...
Smith, R.R., Sinclair, A.M., Jan Cameron, Roger R. Smith, Cameron, J., Wiggins, A.D., Allan M. Sinclair, Sinclair, A. M., Wiggins, A. D., Smith, R. R., White, S., Erik Christensen, Christensen, E., Christensen, Erik, Alan D. Wiggins, Stuart White   +15 more
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Measurement error and statistical disclosure control [PDF]

, 2010
Statistical agencies release microdata to researchers after applying statistical disclosure control (SDC) methods. Noise addition is a perturbative SDC method which is carried out by adding independent random noise to a continuous variable or by ...
Shlomo, Natalie, Natalie Shlomo
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Perturbation theory and the Rayleigh quotient [PDF]

, 2011
The characteristic frequencies ? of the vibrations of an elastic solid subject to boundary conditions of either zero displacement or zero traction are given by the Rayleigh quotient expressed in terms of the corresponding exact eigenfunctions.
Chan, KT, Chan, K.T., Stephen, N.G., Young, K., Stephen, NG, K. Young, K.T. Chan, Young, K, N.G. Stephen   +8 more
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Development and validation of a two-dimensional pseudorandom balance perturbation test

Frontiers in Human Neuroscience
IntroductionPseudorandom balance perturbations use unpredictable disturbances of the support surface to quantify reactive postural control. The ability to quantify postural responses to a continuous multidirectional perturbation in two orthogonal ...
Andrew R. Wagner, Andrew R. Wagner, Sophia G. Chirumbole, Jaclyn B. Caccese, Ajit M. W. Chaudhari, Ajit M. W. Chaudhari, Ajit M. W. Chaudhari, Daniel M. Merfeld, Daniel M. Merfeld, Daniel M. Merfeld, Daniel M. Merfeld   +10 more
doaj   +1 more source

Pressure-Driven Vapor Exchange With Surface Snow

Frontiers in Earth Science, 2019
Atmospheric pressure changes ranging from high-amplitude, low-frequency events caused by synoptic weather systems to smaller amplitude, high-frequency events caused by turbulence penetrate permeable snow surfaces.
Stephen A. Drake, John S. Selker, Chad W. Higgins   +2 more
doaj   +1 more source

Optimal Robust LQI Controller Design for Z-Source Inverters

Applied Sciences, 2020
This paper investigates the linear quadratic integral (LQI)-based control of Z-source inverters in the presence of uncertainties such as parameter perturbation, unmodeled dynamics, and load disturbances. These uncertainties, which are naturally available
Amirhossein Ahmadi, Behnam Mohammadi-Ivatloo, Amjad Anvari-Moghaddam, Mousa Marzband   +3 more
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Supragingival microbiota, cytokines, and proteins in individuals with different trajectories in experimental gingivitis

Journal of Oral Microbiology
Background Gingivitis in response to biofilm formation may exhibit different trajectories. The purposes of the present study were to characterize the composition of the supragingival microbiota and salivary cytokine and protein levels in healthy ...
Christine Lundtorp-Olsen, Nikoline Nygaard, Laura Massarenti, Florentin Constancias, Christian Damgaard, Ulvi Kahraman Gursoy, Annina van Splunter, Floris J. Bikker, Mervi Gursoy, Merete Markvart, Daniel Belstrøm   +10 more
doaj   +1 more source

Numerical Simulation of Buckling and Post-Buckling Behavior of a Central Notched Thin Aluminum Foil with Nonlinearity in Consideration

Metals, 2020
In thin notched sheets under tensile loading, wrinkling appears on the sheet surface, specifically around the cracked area. This is due to local buckling and compression stresses near the crack surfaces.
Mahdieh Shahmardani, Per Ståhle, Md Shafiqul Islam, Sharon Kao-Walter   +3 more
doaj   +1 more source

PERTURBATION THEORY FOR ELECTROMAGNETIC WAVE SCATTERING IN RANDOM LAYERED STRUCTURES

, 2010
The problem of electromagnetic wave scattering in 3-D random layered structures, is analytical treated by relying on original results of the Boundary Perturbation Theory (BPT) and Volumetric-Perturbative Reciprocal Theory (VPRT), whose structured ...
Imperatore, Pasquale
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