Mathematical Representation
Mostrando 1-12 de 131 artigos, teses e dissertações.
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1. FUZZY MODELING OF THE EFFECTS OF DIFFERENT IRRIGATION DEPTH IN RADISH CROP. PART II: BIOMETRIC VARIABLES ANALYSIS
ABSTRACT In order to estimate the response of biometric variables in different irrigation depths in radish crop, as well as their relations in the development of the crop, a fuzzy mathematical analysis was carried out from irrigation with depths of different percentages of the crop evapotranspiration (ETc), using Gaussian pertinence functions for the input v
Eng. Agríc.. Publicado em: 2021-05
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2. Forecasting the Electricity Consumption in a Higher Education Institution
Abstract The objective of this paper is to present a mathematical representation by Regression Analysis that enables the projection of electricity consumption according to the built area and population in Higher Education Institutions (HEI) and to define an Indicator that contemplates the most significant variable in consumption. of electric power. The Null
Braz. arch. biol. technol.. Publicado em: 25/11/2019
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3. Estudio longitudinal de la capacidad de representación simbólica de niños y niñas en el ciclo 3-6 de Educación Infantil al abordar tareas relativas a dictados matemáticos
Abstract In this work, mathematical dictations are used as a didactical-instrumental approach to perform a longitudinal study on the mathematical representation capacity in children at an early age. For this purpose, a field study was carried out with a total sample of 104 girls and boys of 1st, 2nd, and 3rd grade of Early Childhood Education. The results ob
Bolema. Publicado em: 01/08/2019
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4. Procesos de Visualización en una Tarea de Generación y Representación de Cuerpos de Revolución
Abstract In this work we analyzed the visualization processes involved in a mathematical task that requires generating and representing solids of revolution. The task was administered to four hundred university students from the Bachelor's Degree in Primary Education. We adopted the Ontosemiotic Approach to Mathematical Instruction and Knowledge as a theoret
Bolema. Publicado em: 01/08/2019
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5. The Log-Odd Normal Generalized Family of Distributions with Application
Abstract: The normal distribution has a central place in distribution theory and statistics. We propose the log-odd normal generalized (LONG) family of distributions based on log-odds and obtain some of its mathematical properties including a useful linear representation for the new family. We investigate, as a special model, the log-odd normal power-Cauchy
An. Acad. Bras. Ciênc.. Publicado em: 01/07/2019
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6. 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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7. Intradisciplinaridade Matemática com GeoGebra na Matemática Escolar
Resumo Neste artigo discutimos o trabalho intradisciplinar na Matemática escolar e trazemos evidências de que o uso do GeoGebra o favorece. Para tanto, questionamos o processo de disciplinarização da ciência, que contribuiu com o aprofundamento das diversas áreas, ao mesmo tempo em que impulsionou uma crescente dissociação entre elas. De igual modo,
Bolema. Publicado em: 2019-04
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8. Food web and ecological models used to assess aquatic ecosystems submitted to aquaculture activities
RESUMO: Ecossistemas aquáticos continentais desempenham papel fundamental no desenvolvimento econômico e social, entretanto, são vulneráveis à degradação ambiental devido às diversas pressões a que estão submetidos. Entre as principais atividades antrópicas a interferir nestes ambientes, podemos destacar a aquicultura. A modelagem matemática de
Cienc. Rural. Publicado em: 28/02/2019
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9. Gráficos Estadísticos en Libros de Texto de Matemática de Educación Primaria en Perú
Abstract This paper presents the results of the statistical graphs’ analysis according to the curricular guidelines and its implementation in eighteen primary education mathematical textbooks in Perú, which correspond to three complete series and are from different editorials. In them, through a content analysis, we analyzed sections where graphs appeared
Bolema. Publicado em: 2018-08
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10. Radiation-induced Changes in the Electrophoretic Profile of Serum Albumin
ABSTRACT Albumin protein profiles were investigated in electrophoresis system in relation to the whole body exposition to the radiation. Two groups of rats Wistar were set up as the control (CG) and the irradiated one (IG). The IG was exposed to Co-60 at a dose of 5 Gy. After a 72-hour exposition, 300 μL of blood was collected in the inferior vena cava, ren
Braz. arch. biol. technol.. Publicado em: 08/01/2018
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11. Génesis Semiótica de los Enteros
Abstract The traditional presentation of the integers ring generates difficulties for learning the product with its well-known signs rule. Our working hypothesis is that the solely representation of the product of two natural numbers by the area of a rectangle can hinder the vision of the product of two integers. Referring us to the scheme of Mathematical Wo
Bolema. Publicado em: 2016-04
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12. ADSORPTION OF THE DYE REACTIVE BLUE 5G IN RETORTED SHALE
Abstract In this study the influence of the volumetric flow rate and feed concentration was investigated for the adsorption of the reactive dye Blue 5G. Experiments were carried out in a bed packed with retorted shale, at 30 ºC. The ranges investigated were flow rate 2 -10 mL/min and the feed concentration 13-105 mg/L. Mathematical models were used to repre
Braz. J. Chem. Eng.. Publicado em: 2015-03