Nelder Mead Simplex
Mostrando 13-16 de 16 artigos, teses e dissertações.
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13. Calibração de modelos de redes de distribuição de água para abastecimento considerando vazamentos e demandas dirigidas pela pressão / Water distribution network calibration model considering leakage and head-driven demands
Brazils water distribution systems usually present a high percentage of so-called physical losses, of which a significant portion is caused by leakage. Therefore, it is of fundamental importance, not only from the financial standpoint in terms of the pumped and chemically treated water but also particularly from that of the preservation of this natur
Publicado em: 2003
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14. Cinetica das reações de hidroconversão de residuo de vacuo de petroleo Marlim
In this work kinetic models are obtained for the Marlim vacuum residua (VR) hydroconversion. This is a joint work with PETROBRAS SA. First, several hydroconversion experiments were held on a stirred batch reactor, the feedstock being Marlim VR mixed with FCC decant oil in a 80/20% weight basis. Several temperatures and oil/catalyst ratios were used (catalyst
Publicado em: 2000
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15. Aplicação do metodo simplex de otimização experimental em quimica analitica
Métodos univariados são inadequados para otimização multivariada de métodos químicos analíticos nos quais a variáveis interagem. Nestas condições, a otimização simplex aparece como um das mais efecientes e facil para procedimentos aplicados. A pontencialidade do método é demostrada nas três seguintes aplicações: 1 - Cromatografia gasosa: oti
Publicado em: 1988
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16. Nonlinear regression-based method for pseudoenhancement correction in CT colonography
In CT colonography (CTC), orally administered positive-contrast tagging agents are often used for differentiating residual bowel contents from native colonic structures. However, tagged materials can sometimes hyperattenuate observed CT numbers of their adjacent untagged materials. Such pseudoenhancement complicates the differentiation of colonic soft-tissue
American Association of Physicists in Medicine.