Models Of Prevision
Mostrando 1-12 de 12 artigos, teses e dissertações.
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1. Modelo de previsión de la progresión del área de fisuras en pavimentos asfálticos
This work presents the development of a model to predict cracking progression in hot-mix asphalt pavements, based on information obtained from a database maintained by State of Bahia Department of Transportation, with data collected in 2004. A factorial design was performed to arrange the data available in order to facilitate the statistical analysis. The fa
J. Transp. Lit.. Publicado em: 2014-04
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2. Avaliação do perfil de dissolução de medicamentos utilizando-se espectroscopia eletrônica multivariada
In this work the evaluation of the dissolution profile of captopril-hydrochlorothiazide and zidovudine-lamivudine associations were carried out by multivariate spectroscopic method. The models were developed by partial least square regression from 20 synthetic mixtures using mean-centered spectral data. The external validation was accomplished with 5 synthet
Química Nova. Publicado em: 2011-09
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3. Caracterização espectroscópica multivariada do potencial antioxidante de vinhos
In this work the antioxidant capacity of red wine samples was characterized by conventional spectroscopic and chromatographic methodologies, regarding chemical parameters like color, total polyphenolic and resveratrol content, and antioxidant activity. Additionally, multivariate calibration models were developed to predict the antioxidant activity, using par
Química Nova. Publicado em: 2011
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4. Previsão de demanda para sistema de abastecimento de água / Water demand prediction for water distribution system
The present work focuses the problem of water demand forecasting for real time operation of WSS. The study was conducted using hourly consumption data from water distribution system from the cities of São Carlos, Araraquara, SP, to identify the model that fits better. It were studied the artificial neural network Multilayer Perceptron (ANN MLP), the Dynamic
Publicado em: 2010
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5. Previsão das propriedades físicas do papel kraft por espectroscopia no infravermelho próximo (NIR) e regressão por mínimos quadrados parciais (PLS)
The main objective of the present work is represented by the characterization of the physical properties of industrial kraft paper (i.e. transversal and longitudinal tear resistance, transversal traction resistance, bursting or crack resistance, longitudinal and transversal compression resistance (SCT (Compressive Strength Tester) and compression resistance
Química Nova. Publicado em: 2009
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6. Combinação de previsões aplicada à volatilidade
A realização de previsões de volatilidade é uma atividade de suma importância para empresas e agentes econômicos, entretanto utilizar-se de apenas um modelo para obtê-las pode não ser suficiente para incorporar todo o conhecimento associado ao ambiente de previsões. As técnicas de combinação de previsões podem incorporar todo o conhecimento asso
Publicado em: 2009
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7. Biogeographical influence on bird species sensitivity to habitat fragmentation / Influência de fatores biogeográficos sobre a sensibilidade das espécies de aves à fragmentação do habitat
Species distribution models (SDM) is a quite new technique that has been used in many fields of natural sciences. Nevertheless, as problem inherent of a new technique, there is still a lot of questions about the most appropriated manner of its use and application. As the SDM consists a powerful tool with high potential to be used use in many fields of resear
Publicado em: 2009
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8. Determinação da proteína, óleo e umidade por espectroscopia NIR em grãos de soja do Estado de Roraima
In this study the potentialities of (NIR Near Infrared) spectroscopy and chemometrics techniques are combined aiming to determination of protein, oil and moisture in whole-grain soybean cultivated in the experimental field of the Roraima Embrapa, for which it was used as reference the Kjeldahl method, the extraction method by Soxhlet and the oven method, res
Publicado em: 2008
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9. Grau de fragilizaÃÃo dos pacientes assistidos no nÃcleo de atenÃÃo ao idoso â NAI/UFPE
The gradual aging of the population and the consequente increase of the number of elderly people results in the increase of the chronic-degenerative illnesses and new demands for the sector of health, bringing up a challenge for the sanitary authorities because they demand the implantation of new models of assistance programs a lot of care. The study it used
Publicado em: 2006
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10. Gerenciamento do risco de mercado baseado no Value at Risk estÃtico e dinÃmico para carteira de aÃÃes e opÃÃes negociadas na Bovespa / Actions stock market; Value at Risk (VaR)
This thesis approaches the riskâs administration of the market using Value at Risk (VaR), which became widely used technique for measuring future expected risk for both financial and non-financial institutions. The VaR measures the largest expected loss in given period of time that expected loss is depending of suppositions about the distribution of return
Publicado em: 2005
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11. Astronomia de regua e compasso : de Kepler a Ptolomeu
The great variety of problems in teaching science suggests an infinity of different topics. In this work, we criticize the way some basic topics are explained and studied along 1st (first) and 2nd (second) degree. Laws are stated without any relation and any experiment or observation before the phenomenon of nature that those laws explain. These laws after b
Publicado em: 1986
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12. Caracteristicas micrometeorologicas observadas em cafeeiros em noites sujeitas a geada de irradiação
This research project was developed looking for the caracterization of the micrometeorological parameters condicioning the chilling process from cofee´s trees, to serve to numerical models of frost´s prevision. The measurements were obtained during the winter of 1980 and 1981, in the Experimental Center of the ?Instituto Agronômico de Campinas?. The measu
Publicado em: 1985