Navegando por Assunto "Trends"

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Educação matemática e suas teorias em desenvolvimento: perspectivas e articulações, à luz dos programas de pesquisas Lakatosiano
(Universidade Federal do Pará, 2021-06-25) SILVA, Aline Miranda da; NUNES, José Messildo Viana; http://lattes.cnpq.br/5188612973174798; https://orcid.org/0000-0001-9492-4914
This research addresses the theme of the area of Mathematical Education, with regard to the said Trends in Mathematical Education, which in our perspective are Theories in Development of Mathematical Education. The purpose of this discussion is to make reflections that allow us to have a more integrated look at the Theories in Development in Mathematics Education. Supported by Lakatos' Epistemology (1979), we take Mathematics Education as a research program and theories in development as the research subprograms. For this, we developed a Study and Research Pathway (PEP). The Courses were carried out with professor-students of the Postgraduate Course at the Master and Doctorate level of the Postgraduate Program in Education in Science and Mathematics (PPGCEM), from the Institute of Mathematical and Scientific Education (IEMCI) of the Federal University of Pará (UFPA). We assume as a research question: What is the Firm Core of the Mathematical Education Program that would articulate the Theories under development as Subprograms? In this perspective, we understand that some of the so-called Trends in Mathematical Education, as considered by many researchers in this area in Brazil, are nevertheless constituted as Theories in development, being Research Subprograms that are articulated in a larger context, the deque program is Education research Mathematics, which is organized from a firm core to be revealed in a Study and Research Course. In these terms, we developed the construction of this thesis, where we assume that the developing theories of Mathematics Education are contextualization in a broad sense of this field of research, and are constituted as research subprograms.
Acesso aberto (Open Access)
Variabilidade genética do peso ao nascer e seleção para crescimento em bubalinos do estado do Pará, Brasil
(Instituto Nacional de Pesquisas da Amazônia, 2014-09) AGUIAR, Juliana Flor de; MARCONDES, Cíntia Righetti; MARQUES, José Ribamar Felipe; VOZZI, Pedro Alejandro; CAMARGO JÚNIOR, Raimundo Nonato Colares; MARQUES, Larissa Coelho; ARAÚJO, Ronyere Olegário de; GUNSKI, Ricardo José
Birth weight is a performance parameter of great zootechnical importance for both meat and dairy production, as well as for breeding animals, mainly due to its relation to survival rate at weaning, and the weight of animals throughout their developmental and growth phases. Therefore, the objective of this work was to establish heritability estimates, as well as phenotypic and genetic trends of birth weight of water buffaloes from State of Pará, Brazil. Descriptive statistics were calculated and the Shapiro-Wilk Normality test was performed with a Statistical Analysis System package. Heritability estimates were established by Bayesian inference. BW was 36.6 kg in average. The statistical model considered sex, year of birth and breed composition of the animals as fixed effects, and animal, maternal and residual as random effects. Direct heritability was platykurtic (flattened) and with higher asymmetry, presenting a bimodal distribution with the first mode close to 0.10, and the second mode close to 0.30; the maternal heritability was trimodal, with peaks very close to 0.15, and another, less evident, close to 0.20. The direct genetic trend of birth weight was negative (-0.03kg year-1) and maternal genetic trend was close to zero (0.001kg ano-1), even though the phenotypic trend had been positive (0.156 kg year-1). There is genetic variability to be addressed in a breeding program, however, very little was done as far as selection for growth of water buffaloes in the State of Pará.