Mathematical Investigations
Mostrando 1-12 de 39 artigos, teses e dissertações.
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1. Enfoque Ontosemiótico de los Conocimientos y Competencias del Profesor de Matemáticas
Abstract Several theoretical frameworks propose different systems of mathematical knowledge for teaching that help describe teaching practices and develop plans for teacher training. This article describes one of these systems, which includes both knowledge and the competencies of a mathematics teacher, and it is based on the onto-semiotic approach of mathem
Bolema. Publicado em: 2017-04
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2. MATHEMATICAL MODELING OF BATCH ADSORPTION OF MANGANESE ONTO BONE CHAR
Abstract The present study investigated the dynamics of batch adsorption of manganese onto bone char by using two distinct mathematical formulations: the diffusion model and the shrinking core model. Both models assumed spherical particles and adequately described the transient behavior of metal adsorption under changing operating conditions. Comparatively,
Braz. J. Chem. Eng.. Publicado em: 2016-06
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3. Review of FERREIRÓS, J; LASSALLE CASANAVE, A. El árbol de los números. Editorial Universidad de Sevilla: Sevilla, 2016
Abstract We review Ferreirós and Lassalle Casanave's recently publishedbook "El árbol de los números". The book is a result of the Brazilian-Spanish conference "Sobre la elucidación del concepto de número: cognición, lógica y práctica matemática" hosted in Sevilla in 2013, and collects new papers on History and Philosophy of Mathematics as well as M
Manuscrito. Publicado em: 2016-03
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4. Evaluation of the Diameter Influence on the Tensile Strength of Pineapple Leaf Fibers (PALF) by Weibull Method
The fiber extracted from pineapple leaf (PALF) displays relevant mechanical properties that are motivating investigations for possible engineering application as polymer composite reinforcement. As any natural lignocellulosic fiber, the PALF presents non-uniform dimensions and heterogeneous properties with a significant dispersion of values. In fact, a marke
Mat. Res.. Publicado em: 04/12/2015
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5. Uma proposta de modelagem de condicionadores de ar split visando a análise de pedidos de ressarcimento por danos elétricos
The large number of refunding request for electrical and electronic equipment damages has attracted the attention of the electric utilities, consumers, regulatory and other government agencies. Such concerns are not associated only with the financial contents involved, but especially with the social impacts associated to requests, decisions, conflicts and ot
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 10/08/2012
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6. A EDUCAÇÃO MATEMÁTICA NO DESENVOLVIMENTO PROFISSIONAL DE PROFESSOR(A) NO CURSO DE PEDAGOGIA DA UNIVERSIDADE FEDERAL DE SERGIPE. / EDUCATION MATH TEACHER PROFESSIONAL DEVELOPMENT IN THE COURSE OF THE UNIVERSITY OF PEDAGOGY SERGIPE.
The present work has as objective indentify the relations that the students from the Pedagogy course at Universidade Federal de Sergipe establish between didactic and the acquisition of mathematical knowledge lived at different moments of their schooling since basic education until college and analyze the process of mathematical knowledge acquisition as to t
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 04/05/2011
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7. Zoneamento geotécnico com base em krigagem ordinária e equações multiquádricas: barragem de Itaipu / Geotechnical zoning based in ordinary kriging and multiquadric equations: Itaipu Hydroelectric Power Plant
This thesis presents a study based on the zoning of geotechnical parameters resulting from core boring, carried out in the basaltic bedrock located in the area of the Itaipu Hydroelectric Power Plant (Foz do Iguaçu - PR). These zonings were carried out based on the interpolation of the data by means of ordinary kriging and multiquadric equations. The data p
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/10/2010
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8. Desenvolvimento do índice de salubridade ambiental (ISA) para comunidades rurais e sua aplicação e análise nas comunidades de Ouro Branco MG
This research focused on the study and analysis of the conditions of environmental health in rural communities using the Index of Environmental Health (in Portuguese, ISA Índice de Salubridade Ambiental). In order to accomplish this goal, we applied a model known as ISA, developed by Dias (2003), in three countryside areas in the city of Ouro Branco (MG), B
Publicado em: 2010
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9. Reprodução e produção das condições sociais em aulas de matemática: uma perspectiva trilhada na sala de aula
Traditional teaching practices still prevail largely in Brazil despite strong criticism that has being addressed to them as well as many alternative proposals, some of them from mathematical education field. Similar situations can be found in many countries and it challenges us to better understand what collaborates with their persistence. At the same time,
Publicado em: 2009
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10. Stability analysis of analog-digital control systems as a function of the samplint period / Análise da estabilidade de sistemas de controle analógicos-digitais em função do período de amostragem
In this work the stability of analog-digital control systems as a function of the sampling period is analyzed. A new rule of bilinear s-z mapping with two parameters is proposed, tested, analyzed and compared with some classical rules. A mathematical model for the aliasing is also proposed. Investigations on the stability/instability boundaries of analog-dig
Publicado em: 2009
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11. Habilidades metacognitivas em matemática: desenvolvimento por meio de problemas aritméticos verbais com história no ambiente lúdico de aprendizagem de realidade suplementar / Metacognitive skills in mathematics: development through verbal arithmetic problems with history in a playful learning environment of surplus reality
This research situates within the context of investigations that seek to contribute to the teaching of mathematics in the early grades of schooling. Investigations in this area suggest that the metacognitive skills of the individual should become the focus of instruction in the classroom. The literature on mathematics education highlights the activities of p
Publicado em: 2009
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12. Investigação histórica na formação de professores de matemática: um estudo centrado no conceito de função
In this study we analyzed the development of a teaching experience, involving students with a bachelors degree in mathematics from UFRN, based on the history of mathematics and mathematical investigations with the aim of contributing to the improvement of the teaching-learning of mathematics. The historical investigation tasks were planned and applied in the
Publicado em: 2008