Parametric Sensitivity Analysis
Mostrando 25-36 de 36 artigos, teses e dissertações.
-
25. Factors associated with Intra-Uterine Growth Retardation newborns in public maternity in Salvador. / Fatores associados ao retardo de crescimento intra-uterino em recém nascidos em maternidades públicas da cidade de Salvador-Bahia.
Factors associated with Intra-Uterine Growth Retardation have not been fully clarified. Small newborns for gestational age have shown different hematological parameters compared appropriate newborns for gestational and preterm newborns. There are also methodological limitations concerning accuracy to determine gestational age. Objectives: To determine factor
Publicado em: 2007
-
26. Gradient vector flow and out-of-core image segmentaion by deformable models / Fluxo do Vetor Gradiente e Modelos Deformáveis Out-of-Core para Segmentação e Imagens
Main memory limitations can lower the performance of segmentation applications for large images or even make it undoable. In this work we integrate the T-Surfaces model and Out-of-Core isosurface generation methods in a general framework for segmentation of large image volumes. T-Surfaces is a parametric deformable model based on a triangulation of the image
Publicado em: 2006
-
27. Modeling and simulation of the pervaporation process for separating azeotropic mixtures / Modelagem e simulação do processo de pervaporação na separação de misturas azeotropicas
In this work, a study of the potential of pervaporation process for the separation of azeotropic mixtures was carries out. Two mathematical models were chosen from the literature for pervaporation process based on solution diffusion mechanism and a study, an evaluation and a comparison between these models were made. Two computational programs were developed
Publicado em: 2005
-
28. Modelagem e analise de digestores Kraft descontinuo
Global1y, the Kraft pulping process is beginning to get use of the benefits of the recent developments in the modeling area and process control. Advanced techniques of simulation and control offer tools that allow the analysis and efficient design of multivariable non-linear process, involving the optimization and the advanced control of the process. The pul
Publicado em: 2004
-
29. Analysis of general and specific combining abilities of popcorn populations, including selfed parents
Estimation of general and specific combining ability effects in a diallel analysis of cross-pollinating populations, including the selfed parents, is presented in this work. The restrictions considered satisfy the parametric values of the GCA and SCA effects. The method is extended to self-pollinating populations (suitable for other species, without the self
Genetics and Molecular Biology. Publicado em: 2003-12
-
30. Supercritical extraction of oleaginous: parametric sensitivity analysis
The economy has become universal and competitive, thus the industries of vegetable oil extraction must advance in the sense of minimising production costs and, at the same time, generating products that obey more rigorous patterns of quality, including solutions that do not damage the environment. The conventional oilseed processing uses hexane as solvent. H
Brazilian Journal of Chemical Engineering. Publicado em: 2000-12
-
31. Comparison of AutoSetä and polysomnography for the detection of apnea-hypopnea events
The use of the flow vs time relationship obtained with the nasal prongs of the AutoSetä (AS) system (diagnosis mode) has been proposed to detect apneas and hypopneas in patients with reasonable nasal patency. Our aim was to compare the accuracy of AS to that of a computerized polysomnographic (PSG) system. The study was conducted on 56 individuals (45 men)
Brazilian Journal of Medical and Biological Research. Publicado em: 2000-05
-
32. Modelagem dinamica e analise do processo de extração supercritica de oleaginosas
Since the third decade of the century XX, it has been accomplishing the extraction process of oleaginous for hexane. As this substance is toxic and highly flammable, it has been intensifying the search of solvents that produce oil of good quality using clean technologies, minimizing the damage to the environment and production envirenment. It is in this cont
Publicado em: 2000
-
33. Analise do desempenho de plantas de extração de oleo convencionais e de processos supercriticos
Conventional extraction and supercritical process are two forms of obtaining vegetable oil and products with high value. Seed oil extraction is traditionally based on the use of organic solvents. The hexane extraction process is nowadays mostly used in the industry. Supercritical fluid technology may be a viable alternative to current extraction methods. It
Publicado em: 2000
-
34. OTIMIZAÇÃO DE FORMA DE MODELOS BIDIMENSIONAIS DE ELEMENTOS FINITOS COM COMPORTAMENTO ELASTO-PLÁSTICO / OPTIMIZACIÓN DE FORMA DE MODELOS BIDIMENSIONALES DE ELEMENTOS FINITOS CON COMPORTAMIENTO ELÁSTICO-PLÁSTICO / SHAPE OPTIMIZATION OF 2D FINITE ELEMENT MODELS CONSIDERING ELASTO-PLASTIC BEHAVIOUR
The main goal of this work is to present an integrated system for the optimization of plane structures with elastoplastic behavior. The methodology proposes an alternative for the conservative way in which structures traditionally have been optimized, i.e., that they present linear elastic behavior. The computational system is said to be integrated because i
Publicado em: 2000
-
35. Modelagem, simulação e controle de reatores cataliticos de leito fixo
In this work, pseudo-homogeneous bi- and uni-dimensional fixed bed catalytic reactors are presented. Such models incorporate the fluid and solid thermal capabilities, (pCp)f e (pCp)s, respectively. The proposed models reproduce a dynamic behaviour expected in a fixed bed catalytic reactor, including the inverse response phenomenon. The bi-dimensional models
Publicado em: 1999
-
36. Combined use of non-invasive techniques to predict pulmonary arterial pressure in chronic respiratory disease.
The value of non-invasive procedures for predicting pulmonary arterial pressure was investigated in 370 patients with chronic obstructive lung diseases and in 73 with fibrosing alveolitis in a combined study at nine centres in six European countries. Measurements included forced expiratory volume in one second, arterial blood gas tensions, standard electroca