Algebraic Expressions
Mostrando 1-12 de 19 artigos, teses e dissertações.
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1. Vínculos y Brechas entre el Conocimiento Teórico y el Conocimiento Práctico Perceptual de una Futura Profesora en la Ensenanza de la Multiplicación de Expresiones Algebraicas
Abstract Prospective mathematics teachers require an integrated education to respond to the school system demands, so that they are able to explicitly link the knowledge acquired in their training with the practice-based experiences. The purpose of this article is to investigate the links and gaps between the theoretical knowledge and the perceptual practica
Bolema. Publicado em: 01/08/2019
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2. Simplified expressions for dynamic behavior of cylindrical shells uncoupled and coupled with liquids
Abstract The dynamic behavior of cylindrical shells is essential in many practical applications. These include in-vacuum and coupled vibrations of structures with contained fluids. Closed-form solutions are extremely complex since they involve many terms and algebraic operations that require numerical solvers. In this work, a simplified closed-form solution
Lat. Am. j. solids struct.. Publicado em: 22/07/2019
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3. Desarrollo del Razonamiento Algebraico Elemental mediante Tareas de Recuento con Patrones
Abstract The counting tasks with patterns are a privileged context for the development of algebraic reasoning. The onto-semiotic complexity of tasks allows the identification of study processes to improve performance in successive algebrization levels, from purely arithmetic manipulation to a practice with a consolidated algebraic level. The objective is two
Bolema. Publicado em: 2019-04
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4. Dificultades conceptuales y matemáticas del modelo convencional de oscilaciones amortiguadas
Abstract A mathematical study on the subject of damped oscillations is expounded, focused on the computation of the constants of the equation of movement, their mathematical meaning and their implications on the behavior of systems. Examples are given of the initial value method for computing the constants, both for free and damped oscillations. Algebraic ex
Rev. Bras. Ensino Fís.. Publicado em: 06/12/2018
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5. Reflection/refraction at the interface of an elastic solid and a partially saturated porous solid containing liquid filled bound pores and a connected pore space saturated by two-phase fluid
Abstract The phenomena of reflection and refraction of plane waves incident obliquely at a plane interface between uniform elastic solid half-space and porous solid containing liquid filled bound pores and two-phase fluid in connected pores has been analyzed. The amplitude ratios of the reflected and refracted waves to that of the incident wave are calculate
Lat. Am. j. solids struct.. Publicado em: 2015-10
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6. Uma abordagem funcional para o ensino de inequações no ensino médio
This qualitative research was conducted with students undergoing the second year if Senior High School in a private school in the south area of São Paulo. We looked for answers to the following questions: Up to what extent does the teaching of inequalities through a functional graphic approach, which involves the treatment and conversion of registers of sem
Publicado em: 2011
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7. Pensamento genérico e expressões algébricas no ensino fundamental
O presente trabalho trata basicamente do conteúdo expressões algébricas no ensino fundamental. Motivados pela crença de que a ausência do método de argumentação matemática e do pensamento genérico no atual ensino de Matemática têm se apresentado muito nociva ao estudo de expressões algébricas, desenvolvemos, em uma turma de sétima série, uma
Publicado em: 2011
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8. An algebraic approach for simultaneous solution of process and molecular design problems
The property integration framework has allowed for simultaneous representation of processes and products from a properties perspective and thereby established a link between molecular and process design problems. The simultaneous approach involves solving two reverse problems. The first reverse problem identifies the property targets corresponding to the des
Brazilian Journal of Chemical Engineering. Publicado em: 2010-09
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9. Geração de expressões algébricas para processos de negócio usando reduções de digrafos série-paralelo / Generation of algebraic expressions for business processes using reductions on series-parallel digraphs
Modeling and execution control are complementary approaches of business process management that have been developed independently. On one hand, modeling is usually performed by business specialists and explores semantical aspects of the business process. On other hand, execution control studies consistent and efficient mechanisms for implementation. This wor
Publicado em: 2008
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10. O aluno do ensino médio e a criação de uma fórmula para o termo geral da progressão aritmética
This work presents a qualitative research which is guided by the objective of investigating whether if its possible to create conditions so that High School students generalise terms of arithmetic progressions and, if so, whether this generalization allows students to build a formula of general term of this type of sequence. The relevance of this research is
Publicado em: 2008
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11. Dynamic simulation of flash drums using rigorous physical property calculations
The dynamics of flash drums is simulated using a formulation adequate for phase modeling with equations of state (EOS). The energy and mass balances are written as differential equations for the internal energy and the number of moles of each species. The algebraic equations of the model, solved at each time step, are those of a flash with specified internal
Brazilian Journal of Chemical Engineering. Publicado em: 2007-06
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12. Introdução da noção de variável em expressões algébricas por meio da resolução de problemas: Uma abordagem dinâmica
Students difficulties in writing and interpreting algebraic language, particularly in comprehending the meaning of variable have been discussed by such researchers as Kieran, Küchemann, Arcavi and others. In this research, we evaluate a teaching proposal in which it is aimed at explaining established relations between elements of circumstances of proportion
Publicado em: 2006