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Improving the precision matrix for precision cosmology
(Oxford University Press, 2015-12)
The estimation of cosmological constraints from observations of the large-scale structure of the Universe, such as the power spectrum or the correlation function, requires the knowledge of the inverse of the associated ...
Design of reduced-order nonlinear observers for energy conversion applications
(Institution of Engineering and Technology, 2010-05)
Here a systematic technique to design a reduced-order nonlinear observer for estimating signals in application to energy conversion systems is introduced. This observer presents a linear error dynamics in estimated variables ...
Direct Method for Structural Observability Analysis
(American Chemical Society, 2004-01)
A noncombinatorial method for structural observability analysis is presented in this paper. The technique rearranges the process occurrence matrix to a specific block lower-triangular pattern by means of bigraphs and ...
A review of innovation-based methods to jointly estimate model and observation error covariance matrices in ensemble data assimilation
(Amer Meteorological Soc, 2020-10)
Data assimilation combines forecasts from a numerical model with observations. Most of the current data assimilation algorithms consider the model and observation error terms as additive Gaussian noise, specified by their ...
Variability Inter-observer between Three Methods of Electrocardiographic (Conventional, Computerized and Computerized Printed) on Healthy Cats
(Universidade Federal do Rio Grande do Sul, 2020)
Polarity relevance in flux-rope trajectory deflections triggered by coronal holes
(EDP Sciences, 2021-08)
Context. Many observations suggest that coronal holes (CHs) are capable of deviating the trajectory of coronal mass ejections (CMEs) away from them. However, for some peculiar events, the eruption has been reported to be ...
Partial Variance of Increments Method in Solar Wind Observations and Plasma Simulations
(Springer, 2018-02)
The method called “PVI” (Partial Variance of Increments) has been increasingly used in analysis of spacecraft and numerical simulation data since its inception in 2008. The purpose of the method is to study the kinematics ...
Goethe’s morphological method and its contribution in teaching and learning process
(Universidade Federal de Santa Maria, 2022)
Some observations on the application of the Rayleigh-Ritz method
(Elsevier, 2001-10)
This paper deals with the applicability of the Rayleigh-Ritz method for the determination of frequency coefficients of beams and plates with elastically restrained edges. Natural frequencies of beams elastically restrained ...
A COMPARATIVE STUDY OF THE STATISTICAL METHODS MOST COMMONLY USED IN AGRICULTURAL RESEARCHTítulo en español.
(University of Puerto Rico Mayagüez Campus Agricultural Experiment Station, 1937)