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Adjustment of model parameters to estimate distribution transformers remaining lifespan
(Scientific Research Publishing Inc., 2018-09)
Currently, the electrical system in Argentina is working at its maximum capacity, decreasing the margin between the installed power and demanded consumption, and drastically reducing the service life of transformer substations ...
Role of Mn and Cr on structural parameters and strain energy during FCC-HCP martensitic transformation in Fe-Mn-Cr shape memory alloys
(Elsevier, 2018-02-10)
Fe-Mn-based alloys show the shape memory effect which is mainly related to the FCC-HCP martensitic transformation. Cr is one of the additional elements which improve the properties of these alloys. In the present work ...
Evaluation of regional transformation parameters between the SAD69 and SIRGAS2000 systemsAvaliação de parâmetros de transformação regionais entre os sistemas SAD69 e SIRGAS2000
(Universidade Tecnológica Federal do Paraná (UTFPR), 2020)
Convergence of the Iterated Aluthge Transform Sequence for Diagonalizable Matrices II: λ-Aluthge Transform
(Birkhauser Verlag Ag, 2008-12)
Let λ∈ (0,1) and let T be a r x r complex matrix with polar decomposition T=U|T|. Then, the λ- Aluthge transform is defined by Δλ(T)= |T|λU |T |1-λ. Let Δnλ(T) denote the n-times iterated Aluthge transform of T, n ∈ N. We ...
The Influence of Mn(II) and Aging Time in the Ferrihydrite to Goethite Transformation
(Bentham Science Publishers, 2008-12)
The ferrihydrite-goethite transformation in samples of pure- and Mn-ferrihydrite was investigated in order to elucidate the effect of Mn(II) in the aging process. Samples of pure- and Mn-ferrihydrites were aged for different ...
Spectral estimation of terahertz time-domain signals using a simple parametric method
(Institution of Engineering and Technology, 2015-12)
A simple method for spectral estimation of terahertz signals using an autoregressive model is developed. The technique shows a better spectral variance and resolution over the use of the Fast Fourier Transform, which is ...
Estimating Model Parameters with Ensemble-Based Data Assimilation: A Review
(Meteorological Soc Jpn, 2013-06)
In this work, various methods for the estimation of the parameter uncertainty and the covariance between the parameters and the state variables are investigated using the local ensemble transform Kalman filter (LETKF). Two ...
Weighted area/angle distortion minimization for Mesh Parameterization
(EMERALD GROUP PUBLISHING LIMITED, 2017-01-01)
Purpose: Mesh Parameterization is central to reverse engineering, tool path planning, etc. This work synthesizes parameterizations with un-constrained borders, overall minimum angle plus area distortion. This study aims ...
Weighted area/angle distortion minimization for Mesh Parameterization
(EMERALD GROUP PUBLISHING LIMITED, 2017-01-01)
Purpose: Mesh Parameterization is central to reverse engineering, tool path planning, etc. This work synthesizes parameterizations with un-constrained borders, overall minimum angle plus area distortion. This study aims ...