Now showing items 1-10 of 213
Principles and applications of a new class of soil water matric potential sensors: the dihedral tensiometer.
(Procedia Environmental Sciences, [S. l.], v. 19, p. 484-493, 2013. Edição dos Anais do Four Decades of Progress in Monitoring and Modeling of Processes in the Soil-Plant-Atmosphere System: Applications and Challenges, Naples, 2013., 2013)
Representation of transmission lines in modal domain using analytical transformation matrices
The phases of a transmission line are tightly coupled due to mutual impedances and admittances of the line. One way to accomplish the calculations of currents and voltages in multi-phase lines consists in representing them ...
Shear modulus G(0) and its correlations with matric suction, unconfined compression strength and tensile strength of an unsaturated residual soil
(Ios Press, 2015-01-01)
Several studies have been developed aiming to understand the behavior of saturated natural soils under small strains. A few studies have considered unsaturated soils, in most cases compacted soils and, eventually, disregarding ...
Development of a set of matrices for the evaluation and classification of regional clusters
(European Operations Management AssociationGlasgow, UK, 2006-06-18)
This study presents the development of a set of matrices to evaluate regional clusters according to the perspective of their different characteristic dimensions. Two applications of this set were studied. The former ...
Correction procedure applied to a single real transformation matrix -Untransposed three-phase transmission line cases
Clarke's matrix has been used as an eigenvector matrix for transposed three-phase transmission lines and it can be applied as a phase-mode transformation matrix for transposed cases. Considering untransposed three-phase ...
Analysis of mechanical behavior in bending of polymer composites using the finite elements method
The use of composite materials has increased in the recent decades, mainly in the aeronautics and automotives industries. In the present study is elaborated a computational simulation program of the bending test using the ...
An alternative procedure to decrease the dimension of the frequency dependent modal transformation matrices: Application in three-phase transmission lines with a vertical symmetry plane
The objective of this paper is to show an alternative representation in time domain of a non-transposed three-phase transmission line decomposed in its exact modes by using two transformation matrices. The first matrix is ...