Optimal Estimates
Mostrando 1-12 de 73 artigos, teses e dissertações.
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1. Settlement of bored piles with expander body system in lateritic soils
Abstract The Expander Body pile (EB) is a combination of a cast-in-situ pile method with an inflated, pump-grouted tip. The EB system's pioneering conjunction with the conventional drilling pile technique has improved work load, foundation security, cost reductions and abrupt displacements in lateritic, porous, unsaturated soils. The aim of this article is t
REM, Int. Eng. J.. Publicado em: 2021-09
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2. Dynamic anisotropy and non-linear geostatistics supporting short term modelling of structurally complex gold mineralization
Abstract Non-linear geostatistical methods are known to deal appropriately with the geological and geometrical complexity of gold deposits. This article reports the results related to an investigation to improve the gold content estimate based on restricted ore modeling to honor the structural aspects that control the mineralization. The grade domains are de
REM, Int. Eng. J.. Publicado em: 2021-06
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3. Potencial adaptativo de populações de Rhizoctonia solani AG-1 IA associadas ao arroz e à Urochloa brizantha ao estresse térmico
RESUMO Muitos fitopatógenos de ampla distribuição geográfica como os fungos fitopatogênicos do gênero Rhizoctonia, estão sujeitos a extremas flutuações de temperatura em seus habitats. Para sobreviver a tais flutuações térmicas, esses organismos desenvolveram a habilidade de regular seus valores fenotípicos para adaptações térmicas bem como a
Summa phytopathol.. Publicado em: 14/10/2019
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4. Performance of the SSEBop model in the estimation of the actual evapotranspiration of soybean and bean crops
Resumo: O objetivo deste trabalho foi avaliar o desempenho do modelo “operational simplified surface energy balance” (SSEBop) na estimativa da evapotranspiração real (ETa) das culturas de soja e feijão irrigadas por pivô central. As estimativas do modelo foram obtidas de imagens digitais dos satélites Landsat 7 e Landsat 8 e comparadas à ETa obtida
Pesq. agropec. bras.. Publicado em: 27/06/2019
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5. Sampling Alternatives for Eucalyptus Trees in Integrated Crop-Livestock-Forest System
ABSTRACT The aim of this paper was to compare methods and sampling procedures applied to eucalyptus grown under different spatial arrangements in an integrated crop-livestock-forest system (ICLF). The study was carried out in Sinop county, Mato Grosso state, Brazil. Arrangements combining fixed and variable area methods to simple random and systematic sampli
Floresta Ambient.. Publicado em: 13/05/2019
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6. Optimum plot size of planting and bio-agroeconomic revenues from arugula-carrot intercropping systems in a semi-arid region
Abstract The production of vegetable crops has been characterized as a highly intensive activity in the use of soil, water, inputs and labor in semi-arid regions, being practiced mostly by small family farmers as a way of subsistence, or in the small-scale commercialization of surplus production. Among the agricultural practices that have been successfully u
An. Acad. Bras. Ciênc.. Publicado em: 18/10/2018
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7. An Active Search Method for Finding Objects with Near-Optimal Property Values within a Given Set
This paper proposes an active search method aimed at finding objects with optimal or near-optimal y-property values, on the basis of x-variables obtained by indirect, less costly methods. The proposed method progresses in a sequential manner, starting from a small subset of objects with known y-values. At each iteration, the K-nearest neighbour regression te
J. Braz. Chem. Soc.. Publicado em: 2016-06
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8. The Caughey absorbing layer method - implementation and validation in Ansys software
AbstractThis paper addresses the Caughey Absorbing Layer Method (CALM) performance in the one-dimensional problem and its implementation in commercial software, with possibility of direct extension to two-dimensions. The adequacy and numerical efficiency is evaluated using three different error measures and five different variations of the damping profile. O
Lat. Am. j. solids struct.. Publicado em: 2015-08
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9. Delineamentos experimentais eficientes para estudos de cinética química
In this paper we show how to obtain efficient designs of experiments for fitting Michaelis-Menten and Hill equations useful in chemical studies. The search of exact D-optimal designs by using local and pseudo-Bayesian approaches is considered. Optimal designs were compared to those commonly used in practice using an efficiency measure and theoretical standar
Quím. Nova. Publicado em: 2014
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10. Models for estimating feed intake in small ruminants
This review deals with the most relevant limits and developments of the modeling of intake of sheep and goats reared intensively and extensively. Because small ruminants are normally fed ad libitum, voluntary feed intake is crucial in feeding tactics and strategies aimed at optimal animal production. The effects of genetic, neuroendocrine, hormonal, feed and
R. Bras. Zootec.. Publicado em: 2013-09
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11. HLA-G polymorphism in mother-child transmission of HIV-1 / Polimorfismo do HLA-G na transmissão materno-infantil do HIV-1
The main way of HIV-1 infection in children is mother-child transmission (MTCT). TMI rates estimates for HIV-1 are 3% in pregnant women in antiretroviral therapy and 25 to 30% for untreated ones. Despite the viral exposure during pregnancy, most newborns are not vertically infected, suggesting the existence of protective barriers to TMI of HIV-1. Several fac
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 14/12/2012
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12. EquaÃÃes diferenciais elÃpticas nÃo-variacionais, singulares/degeneradas : uma abordagem geomÃtrica / Nonvariational elliptic differential equations, singular/degenerate: a geometric approach
Neste presente trabalho, faremos o estudo de importantes propriedades geomÃtricas e analÃticas de soluÃÃes de equaÃÃes diferenciais parciais elÃpticas totalmente nÃo-lineares do tipo: singulares e degeneradas. O estudo de processos de combustÃo que se degeneram ao longo do conjunto de anulamento da densidade de um gÃs, um caso particular de problem
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 07/12/2012