1,037 research outputs found
4D-CT lung motion models construction with deformable registration: estimation of motion nonlinearity and hysteresis
No full texthttp://www.creatis.insa-lyon.fr/rio/Publications?action=AttachFile&do=get&target=boldea-medphys2008.pdf articl
4D-CT lung motion models construction with deformable registration: estimation of motion nonlinearity and hysteresis
No full texthttp://www.creatis.insa-lyon.fr/rio/Publications?action=AttachFile&do=get&target=boldea-medphys2008.pdf articl
4D-CT lung motion models construction with deformable registration: estimation of motion nonlinearity and hysteresis
No full texthttp://www.creatis.insa-lyon.fr/rio/Publications?action=AttachFile&do=get&target=boldea-medphys2008.pdf articl
On the equilibrium in a discrete-time Lucas Model
No full textIn this paper I study a discrete-time version of the Lucas model with the endogenous leisure but without physical capital. Under standard conditions I prove that the optimal human capital sequence is increasing. If the instantaneous utility function and the production function are Cobb-Douglas, I prove that the human capital sequence grow at a constant rate. I finish by studying the existence and the unicity of the equilibrium in the sense of Lucas or Romer.Lucas Model, human capital, externalities, optimal growth, equilibrium.
A Generalisation of the Trapezoidal Rule for the Riemann-Stieltjes Integral and Applications
No full textA generalisation of the trapezoid rule for the Riemann-Stieltjes integral and applications for special means are given
Projeto e simulação de contatores CA
No full textDissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-Graduação em Engenharia Elétrica.O presente trabalho apresenta uma metodologia para projetar e analisar contator CA. O enfoque é voltado para o dimensionamento da parte magnética, considerando os contatos e sua influência quanto ao funcionamento do mesmo. O contator é basicamente uma chave liga/desliga. Entretanto, sob condições anormais de alimentação pode funcionar de forma inadequada, ou seja, o mesmo fica oscilando num estágio entre liga e desliga indefinidamente. Para se detectar e avaliar este, dentre outros aspectos de seu funcionamento, desenvolveu-se um programa de simulação dinâmica do contator, bem como uma seqüência de projeto e pré análise de contator. A comparação entre valores simulados e experimentais apresentou bons resultados, o que comprova a validade do método desenvolvido
Diferite "voci" în "Meșterul Manole" de Lucian Blaga
No full textThere are several characters with a brief appearance in the history of the drama, thus having an apparent minor significance in designing the play. They seem to be mere “working tools” for the playwright. However when relating them to the major issues of the literary product and if integrating them in a larger vision of the whole creation of the author their significance and role can be outlined in a more adequate manner. The Herald may stand for the impossibility of the common man to understand the drama of the artist, for the incapacity of a mediocre person to assimilate the aspirations of the genius. The Second Carter is a good opportunity to express the middle-ages relations between the Orthodoxy of the Romanians and the Lutheranism of the Saxons in Transylvania, the Protestantism and the whole religious Reform having been rejected naturally by the Romanian people. The Third Carter is the pretext to express in an artistic manner a historical reality, i.e. the major role Târgovişte played as a spiritual focal point for the Romanian middle-ages Orthodoxy, but also as a centre for the religious printings in Romanian or Slavonic languages. Also one can distinguish the suggestion of a light irony on the behalf of the author with regards to the human prosaic hypostasis of the Romanian Orthodox priests when associating their two fundamental habits, anointing the priests and taking care of their own housekeeping. The Voivode is an image of a person with a subtle, diplomatic intelligence that leaves room for a waggish wit. He is fully aware of his condition as patron of church building. He hesitates between two decisions he should make concerning Manole the Craftsman: either to highly praise the artist, the creator or to sentence to death the human murderer. Whichever decision he would make, he knows very well his prerogative as a ruler is absolute and supreme, the middle-ages autocracy allowing him anything. Having a refined spirit, the Voivode understands from the very beginning both the superlative features of the creation and the sacrifice of the creator. His attitude seems to be benevolent, conciliatory, as he is very satisfied with the “gift” of the Masons – in his view the church belongs both to the ruler and to God. It becomes obvious the Voivode urges Manole to enjoy the “fruit of his endeavor and of his hands”. He forgives Manole, having been convinced that at the Last Judgment the church Manole has built would exculpate him of all sins. After Manole commits suicide the Voivode pays him the proper respect. The whole portrait configures the Voivode as an exceptional ambassador of his people, at a far distance from the bloody figure portrayed in some variants of the folk ballad, closer to the real historical character, the benefactor of the Argeş Monastery, Neagoe
Theatre as a Form of Greatness
No full textIn her attempt of proving the theatricality of the theatre, Maria Vodă Căpuşan cultivates a solidly assimilated bibliography, as well as last minute analytical instruments. Her essays have a predominantly theoretical nature, referring less to a certain play or performance, and more to the theatrical phenomena, with its fundamental dimensions and conceptualizations. The author believes that the mythical scripts of the 20th century drama conserve their modelling and integrative functions regardless of the denying passion of different literary, avant-garde or simply modernist movements. Within her books, Maria Vodă Căpușan offers theoretical syntheses worthy of interest from the perspective of new methodological and epistemological approaches applied with a critical discernment and inconspicuous erudition
Active-Flux-Based, V/f-with-Stabilizing-Loops Versus Sensorless Vector Control of IPMSM Drives
No full textThis paper proposes two control methods for Interior Permanent Magnet Synchronous Motor (IPMSM) Drives. The first one is a V/f control with two stabilizing loops: one loop based on active flux balance for voltage magnitude correction and a second, based on speed error, with voltage phase correction. By this control strategy, a fast dynamic speed response, without steady state error and without speed or current regulators, for all AC machines is obtained. The second control method is a sensorless vector control strategy which also has been implemented and tested, just for comparison
Linear electric machines, drives, and MAGLEVs handbook
No full textBased on author Ion Boldea's 40 years of experience and the latest research, Linear Electric Machines, Drives, and Maglevs Handbook provides a practical and comprehensive resource on the steady improvement in this field. The book presents in-depth reviews of basic concepts and detailed explorations of complex subjects, including classifications and practical topologies, with sample results based on an up-to-date survey of the field. Packed with case studies, this state-of-the-art handbook covers topics such as modeling, steady state, and transients as well as control, design, and testing of l
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