Modeling Growth And Production
Mostrando 1-12 de 41 artigos, teses e dissertações.
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1. FUZZY MODELING OF THE EFFECTS OF DIFFERENT IRRIGATION DEPTHS ON THE RADISH CROP. PART I: PRODUCTIVITY ANALYSIS
ABSTRACT The productivity of a crop is related to the water demand inserted in its development. The measurement of water and its optimization directly influences the final costs of crop production for agricultural producers. In this sense, the objective of this study is evaluating the fuzzy modeling in estimating the productivity of the radish crop (fresh ph
Eng. Agríc.. Publicado em: 2021-05
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2. PERTINENCE CURVES IN FUZZY MODELING OF THE PRODUCTIVE RESPONSES OF BROILERS
ABSTRACT The selection of the type of fuzzy systems pertinence curve allows a better representation of the mathematical model and a smaller simulation error. We aimed to study the effect of pertinence curves in fuzzy modeling of broiler performance, created in different production systems. For the development and testing of fuzzy models, three commercial avi
Eng. Agríc.. Publicado em: 19/06/2019
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3. NDVI and meteorological data as indicators of the Pampa biome natural grasslands growth
ABSTRACT The present study aimed to characterize the dynamics of NDVI and meteorological conditions, relating both to the annual dynamics of biomass accumulation in natural pastures of the Pampa biome as a way of subsidizing growth modeling. Forage accumulation rate data from a long-term experiment, NDVI data from the MODIS images, and meteorological data me
Bragantia. Publicado em: 23/04/2018
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4. Microclimate alterations caused by agricultural hail net coverage and effects on apple tree yield in subtropical climate of Southern Brazil
ABSTRACT The use of hail net coverage on plants is an effective measure to mitigate damage caused by hailstorms. In southern Brazil, areas with apple orchards under hail net coverage have increased in recent years. However, little is known about the possible effects on the microclimate and, consequently, on plant growth, crop yield and fruit quality. The hyp
Bragantia. Publicado em: 18/12/2017
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5. Ability of non-linear mixed models to predict growth in laying hens
In this study, the Von Bertalanffy, Richards, Gompertz, Brody, and Logistics non-linear mixed regression models were compared for their ability to estimate the growth curve in commercial laying hens. Data were obtained from 100 Lohmann LSL layers. The animals were identified and then weighed weekly from day 20 after hatch until they were 553 days of age. All
R. Bras. Zootec.. Publicado em: 2014-11
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6. Process-based simple model for simulating sugarcane growth and production
Dynamic simulation models can increase research efficiency and improve risk management of agriculture. Crop models are still little used for sugarcane (Saccharum spp.) because the lack of understanding of their capabilities and limitations, lack of experience in calibrating them, difficulties in evaluating and using models, and a general lack of model credib
Sci. agric. (Piracicaba, Braz.). Publicado em: 2014-02
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7. Modelagem e simulação do processo de fermentação extrativa a vácuo com uma câmara de flash e separação do CO2 utilizando uma coluna de absorção / Modeling and simulation of the vacuum extractive fermentation process using a flash chamber and an absorption column for CO2 separation
The ethanol, also known as bioethanol, shows positive characteristics for being used as a large scale fuel, mainly because of the relatively low cost, low pollutant impact compared to fossil fuels and its feasibility of being produced from a renewable matrix through fermentation of vegetable origin products. The conventional fermentation process is typically
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 07/07/2011
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8. Dinâmica da produtividade da mão-de-obra na agropecuária de Minas Gerais: um estudo de convergência / Dynamics of labor productivity in agriculture in Minas Gerais: a study of convergence
The agricultural sector in Minas Gerais has experienced a significant increase in labor productivity since the 1960s, due to the use of modern inputs, equipments, and farming techniques driven by the green revolution. Nonetheless, the implementation of the modernization policy which brought about such advances was undertaken in an uneven fashion throughout t
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 31/01/2011
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9. Growth characteristics modeling of Bifidobacterium bifidum using RSM and ANN
The aim of this work was to optimize the biomass production by Bifidobacterium bifidum 255 using the response surface methodology (RSM) and artificial neural network (ANN) both coupled with GA. To develop the empirical model for the yield of probiotic bacteria, additional carbon and nitrogen content, inoculum size, age, temperature and pH were selected as th
Brazilian Archives of Biology and Technology. Publicado em: 2011-12
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10. Métodos de ajuste da função Weibull e seu desempenho na prognose do crescimento e produção de Eucalyptus dunnii
The main objective of this research was to develop a simulator system of growth and yield for unthinned plantations of Eucalyptus dunnii using different adjustment methods for the Weibull probability density function to describe the forest structure at various ages. The data used in this research came from measurements of 239 plots in E. dunnii stands in the
Publicado em: 2010
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11. Modelagem do crescimento e da produção de povoamentos de Tectona grandis submetidos a desbaste / Modeling growth and production of stands of Tectona grandis
The objective of this study was to construct a model of growth and production, simulate alternative management stands of teak submitted to selective thinning and evaluate the effectiveness of the selective sampling to obtain data for the modeling of growth and production. The Clutter model was adjusted in its ordinary form, and, also, in the modified form, b
Publicado em: 2009
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12. Modelagem de crescimento e produção de povoamentos de Tectona grandis L. f. a partir de análise de tronco / Modeling growth and production of stands of Tectona grandis L. f. from stem analysis
Os objetivos desse estudo foram de ajustar, avaliar e comparar modelos de crescimento e produção, empregando dados de análises parcial e completa do tronco de árvores de povoamentos de Tectona grandis (Teca), localizados no estado do Mato Grosso, Brasil. Os dados foram coletados em povoamentos da Companhia do Vale do Araguaia (CVA), com idades entre 4 e
Publicado em: 2009