Mathematic Model
Mostrando 1-12 de 52 artigos, teses e dissertações.
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1. FUZZY MODELING OF SALINITY EFFECTS ON RADISH YIELD UNDER REUSE WATER IRRIGATION
ABSTRACT The increase of water usage for food production in recent years has triggered researches on ways to optimize the use of water and to reuse saline water. The present study analyzes the effects of reused saline water in the irrigation of radish culture and the construction of a fuzzy logical mathematic model so that producers may evaluate their produc
Engenharia Agrícola. Publicado em: 2022
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2. Análisis de la Gestión de un Dispositivo Didáctico por un Estudiante de Profesorado en Matemática
Abstract This work is set in the problematic of mathematics trainees. We describe the result of the didactic device management by a mathematics trainee. The student did a course that we designed to the didactic mathematic formation, which adopts a didactic non-traditional model based in research and the link with other disciplines. This student carried out h
Bolema. Publicado em: 2019-04
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3. Modelamiento de la respiración del mango (Mangifera indica l.) usando el método de sistema cerrado a diferentes temperaturas
Abstract Measuring the respiration rate of fresh products is essential to design correct of packaging systems. For such effect, rates of consumption of O2 and production of CO2, usually are taken are initial data of system comportment. The aim of this work, was modelling the respiration of whole mango (Mangifera indica L.), variety Tommy Atkins using a clos
Rev. Bras. Frutic.. Publicado em: 25/06/2018
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4. Formación de Profesores de Matemáticas desde la Etnomatemática: estado de desarrollo
Abstract The goal of this study is to contribute to our understanding of the state of research development about math professors’ training from an ethnomathematics perspective. The empirical material was selected from articles published between 1995 and 2015. The analysis was oriented around four questions: What characteristics should a school curriculum b
Bolema. Publicado em: 2017-08
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5. Automated sugar analysis
Abstract Sugarcane monosaccharides are reducing sugars, and classical analytical methodologies (Lane-Eynon, Benedict, complexometric-EDTA, Luff-Schoorl, Musson-Walker, Somogyi-Nelson) are based on reducing copper ions in alkaline solutions. In Brazil, certain factories use Lane-Eynon, others use the equipment referred to as “REDUTEC”, and additional fact
Food Sci. Technol. Publicado em: 15/03/2016
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6. Microstructural characterization and mechanical behavior of a low-carbon 17%Mn steel
Steels containing high levels of Mn, Si and Al exhibit high plasticity when deformed, owing to twinning-induced plastitity (TWIP) and transformation-induced plasticity (TRIP) effects. In this study, we investigated the microstructural evolution of samples of samples of a 17%Mn steel subjected to war rolling at 700º and 800ºC. We also studied the effects of
Mat. Res.. Publicado em: 27/05/2014
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7. Mathematic model of three-phase induction machine connected to advanced inverter for traction system for electric trolley
Este documento estabelece um modelo matemático de máquina de indução conectado a um inversor de frequência necessário para ajustar o motor de acionamento elétrico. O modelo matemático baseado na Teoria de Park permite a análise de todo o espectro (carro elétrico com inversor de frequência) para dirigir o ônibus elétrico feito em ASTRA Bus Arad (
An. Acad. Bras. Ciênc.. Publicado em: 10/05/2013
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8. Análise dos processos erosivos e as relações com as perdas aceitáveis de solos na Bacia do Alto-Paraíba/PB
The aim of this study was to determine if the soil losses by erosion in Alto Paraíba basin soils are below the maximum tolerance determined by the Soils Department and Rural Engineering of Paraíba Federal University, campus of Areia/PB. by the Soils Department and Rural Engineering of Paraíba Federal University, campus of Areia/PB. This analysis was based
Publicado em: 2011
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9. Parametrização e avaliação do modelo DSSAT/CANEGRO para variedades brasileiras de cana-de-açucar / Parameterization and evaluation of DSSAT/CANEGRO model for Brazilian sugarcane varieties
O aumento da importância da cultura da cana-de-açúcar nos últimos anos atraiu de investimentos ao setor sucro-alcooleiro, tornando o planejamento estratégico uma ferramenta essencial na orientação para expansão da cultura em novas áreas e otimização da produção nas áreas tradicionais de cultivo. A modelagem agrícola, por isso, ganhou importân
Publicado em: 2011
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10. Modelagem matemática na previsão de colheita de bananeira: regressão linear múltipla x redes neurais artificiais / Mathematical modeling to predict crop of banana: multiple regression x neural networks
One of the barriers relevant to the banana crop in Brazil is the lack of productive commercial varieties with adequate size, resistant to major pests and diseases and adapted to different ecosystems. The development of cultivars is the strategy for solving this problem through breeding programs, as well as its characterization and evaluation in areas of prod
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 07/12/2010
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11. MODELAGEM INDIVIDUAL E EM TEMPO REAL DAS EXIGÊNCIAS NUTRICIONAIS DE SUÍNOS EM CRESCIMENTO / MODELING INDIVIDUAL AND IN REAL TIME OF THE NUTRIENT REQUIREMENTS FOR GROWTH PIGS
Two studies were realized with the objective (i) to describe and to establish the limitations of the empirical and factorial methods used to estimate nutritional requirements and (ii) develop a mathematic model able to estimate the daily nutrient requirements of individual pigs in real time. For this purpose, in the first study a systematic analysis was carr
Publicado em: 2010
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12. Desenvolvimento de biossensores eletroquímicos, utilizando matriz polimérica modificada com biomoléculas, para o diagnóstico de câncer de próstata e hepatite C
The development of biologic sensors has become a wide activity in science seeking mainly health and environmental issues. The biosensor development in laboratory has been investigated by many researchers seeking sensitivity, specific, low cost and portable devices. The electrochemical techniques are used in the largest number of works due to the easiness in
Publicado em: 2010