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Calculadoras antigas e o ensino de matemática
(Universidade Estadual Paulista (Unesp), 2015-09-21)
This project developed at the Museum of the University of São Paulo, Piracicaba campus (ESALQ) with calculators (old calculators). Calculators that were initially produced in the nineteenth century, marketed for all the ...
Calculation of Neutron Kerma in Tissues
(Sociedad Mexicana de Seguridad Radiológica (SMSR)Sociedad Nuclear Americana (LAS/. ANS)., 2004-07)
Neutron kerma of normal and tumor tissues has been calculated using the tissues´
elemental concentration. A program developed in Mathcad contains the kerma factors of
C, H, O, N, Na, Mg, P, S, Cl, K, etc. that are in ...
Optimal Hartree-Fock Exact Exchange fraction to describe small organic oligomers.
(Sociedade Brasileira de Pesquisas em Materiais.Campos do Jordão, 2013-09-29)
Electronic conduction by conjugated polymers has attracted attention because their physical and chemical properties are important in the development of new devices. To characterize long polymers chains, it is important to ...
Ab initio calculation of aluminum impurities in MgSiO3 under pressure.
(Sociedade Brasileira de Pesquisas em Materiais.Campos do Jordão, 2013-09-29)
Ferrosilicate perovskite (Mg,Fe)SiO3 is the most abundant minerals in the Earth’s lower
mantle, containing high concentration of iron. The study of properties of this material
under high pressures and high temperatures ...
Distributed generation modelling for unbalanced three-phase power flow calculations in smart grids
(2011-05-31)
Distributed Generators (DG) are generally modeled as PQ or PV buses in power flow studies. But in order to integrate DG units into the distribution systems and control the reactive power injection it is necessary to know ...
DEVELOPMENT OF AN ALGORITHM TO ANALYZE CARTOGRAPHIC FEATURES EXTRACTION METHODS IN DIGITAL IMAGES
(Iop Publishing Ltd, 2014-01-01)
The algorithm creates a buffer area around the cartographic features of interest in one of the images and compare it with the other one. During the comparison, the algorithm calculates the number of equals and different ...
Lightning-Induced Surge in Transmission Towers Calculated Using Full-Wave Electromagnetic Analysis and the Method of Moments
(Ieee, 2018-01-01)
Lightning-induced surges can cause backflashovers in transmission lines which lead to outages in power systems. In this context, the tower-footing grounding impedance and tower surge impedance play fundamental roles in ...
Lightning-induced surge in transmission towers calculated using full-wave electromagnetic analysis and the method of moments
(2019-01-25)
Lightning-induced surges can cause backflashovers in transmission lines which lead to outages in power systems. In this context, the tower-footing grounding impedance and tower surge impedance play fundamental roles in ...