Optimal Classification
Mostrando 13-24 de 66 artigos, teses e dissertações.
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13. Esthesioneuroblastoma, Neuroendocrine Carcinoma, and Sinonasal Undifferentiated Carcinoma: Differentiation in Diagnosis and Treatment
Introduction Malignant sinonasal tumors comprise less than 1% of all neoplasms. A wide variety of tumors occurring primarily in this site can present with an undifferentiated or poorly differentiated morphology. Among them are esthesioneuroblastomas, sinonasal undifferentiated carcinomas, and neuroendocrine carcinomas. Objectives We will discuss diagnos
Int. Arch. Otorhinolaryngol.. Publicado em: 2014
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14. Obsessive-compulsive (anankastic) personality disorder: toward the ICD-11 classification
Obsessive-compulsive personality disorder (OCPD) is an early-onset disorder characterized by perfectionism, need for control, and cognitive rigidity. Its nosological status is currently under review. Historically, OCPD has been conceptualized as bearing a close relationship with obsessive-compulsive disorder (OCD). In this article, we discuss the diagnosis o
Rev. Bras. Psiquiatr.. Publicado em: 2014
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15. Diastolic function is associated with quality of life and exercise capacity in stable heart failure patients with reduced ejection fraction
Exercise capacity and quality of life (QOL) are important outcome predictors in patients with systolic heart failure (HF), independent of left ventricular (LV) ejection fraction (LVEF). LV diastolic function has been shown to be a better predictor of aerobic exercise capacity in patients with systolic dysfunction and a New York Heart Association (NYHA) class
Braz J Med Biol Res. Publicado em: 30/08/2013
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16. Algoritmos Evolutivos aplicados ao Classificador baseado em Segmentos de Reta / Evolutive Algorithms applied to the Straight Line Segment Classifier
During the past years, the use of machine learning techniques have become into one of the most frequently performed tasks, due to the large amount of pattern recognition applications such as: voice recognition, text classification, face recognition, medical image diagnosis, among others. Thus, a great number of techniques dealing with this kind of problem ha
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 03/07/2012
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17. Modelos de distribuição de espécies de vellozia (Velloziaceae) endêmicas da Cadeia do Espinhaço e o efeito amostral sobre os mapas preditivos
The effectiveness of conservation actions depends on the knowledge of the geographical distribution of species. However, this knowledge is far from being achieved for most species, especially those occurring in mountainous tropical environments, such as the rocky fields (campos rupestres) of the Espinhaço Range, characterized by forming islands of vegetatio
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/02/2012
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18. Filogenia e biogeografia das espécies de actinote hübner, 1819 (Nymphalidae : Heliconinae) / Phylogeny and biogeography of species of actinote hübner, 1819 (Nymphalidae : Heliconinae)
Many aspects and details of the origin, evolution and biogeographical patterns of butterflies are not yet fully comprehended. The phylogenetic relationships among most butterfly groups remained unknown until recently. Phylogenetic studies have been based mainly on morphological characters of adults, although characters of immature stages had increased in use
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 13/02/2012
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19. Bézier control points method to solve constrained quadratic optimal control of time varying linear systems
A computational method based on Bézier control points is presented to solve optimal control problems governed by time varying linear dynamical systems subject to terminal state equality constraints and state inequality constraints. The method approximates each of the system state variables and each of the control variables by a Bézier curve of unknown cont
Comput. Appl. Math.. Publicado em: 2012
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20. Numerical solution of the variational PDEs arising in optimal control theory
An iterative method based on Picard's approach to ODEs' initial-value problems is proposed to solve first-order quasilinear PDEs with matrix-valued unknowns, in particular, the recently discovered variational PDEs for the missing boundary values in Hamilton equations of optimal control. As illustrations the iterative numerical solutions are checked against t
Computational & Applied Mathematics. Publicado em: 2012
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21. A weighted mass explicit scheme for convection-diffusion equations
An explicit scheme based on a weighted mass matrix, for solving time-dependent convection-diffusion problems was recently proposed by the author and collaborators. Convenient bounds for the time step, in terms of both the method's weights and the mesh step size, ensure its stability in space and time, for piecewise linear finite element discretisations in an
Comput. Appl. Math.. Publicado em: 2012
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22. Integrating Ridge-type regularization in fuzzy nonlinear regression
In this paper, we deal with the ridge-type estimator for fuzzy nonlinear regression models using fuzzy numbers and Gaussian basis functions. Shrinkage regularization methods are used in linear and nonlinear regression models to yield consistent estimators. Here, we propose a weighted ridge penalty on a fuzzy nonlinear regression model, then select the number
Comput. Appl. Math.. Publicado em: 2012
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23. Análise do ordenamento dos atrativos de turismo de base comunitária no Território da Serra do Brigadeiro-MG / Ranking analysis of the attractions of community-based tourism in the Territory of Serra do Brigadeiro-MG
In the present research work we constructed a set of atrices that allowed the characterization of the community-based tourism activity, using the project Good Practices of Community-Based Tourism developed in the Territory of Serra do Brigadeiro, Minas Gerais, Brazil. Tourism potential is a commonly term used to refer to a natural gift of a region and which,
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 29/07/2011
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24. Comprehensive analysis of etiology on the prognosis of urethral strictures
INTRODUCTION: Urethral strictures remain a reconstructive dilemma, due to high incidence of recurrence and less than satisfactory outcomes. Even experienced surgeons following strict surgical principles have not achieved optimal results, leading us to think whether the etiology of strictures dictate the outcome . We evaluated this "cause-effect" relationship
International braz j urol. Publicado em: 2011-06