O software GeoGebra numa proposta de forma??o continuada de professores de matem?tica do ensino fundamental.

Programa de P?s-Gradua??o em Educa??o Matem?tica. Departamento de Matem?tica, Instituto de Ci?ncias Exatas e Biol?gicas, Universidade Federal de Ouro Preto.A presente pesquisa investiga a utiliza??o de recursos did?ticos com base nas Tecnologias de Informa??o e Comunica??o na Educa??o Matem?tica ? TICEM, como parte importante do trabalho de forma??o dos alunos e do pr?prio professor, pois elas possibilitam a constru??o de conhecimentos s?lidos que podem auxiliar, principalmente, no desenvolvimento de sujeitos ativos na sociedade moderna. Como foco da pesquisa, escolhemos os processos de ensino da Matem?tica no Ensino Fundamental, nos quais o ensino de ?lgebra e Geometria pode gerar obst?culos no processo de aprendizagem. A metodologia de pesquisa focalizou a forma??o continuada, a partir do planejamento e implementa??o de um minicurso realizado com professores de Matem?tica do Ensino Fundamental da rede p?blica estadual de Minas Gerais. Os principais resultados da pesquisa apontam para a urg?ncia dos professores inserirem softwares educativos em suas pr?ticas pedag?gicas, possibilitando assim, novas metodologias de ensino da Matem?tica. Os professores precisam utilizar as TICEM como ferramentas colaborativas e n?o enxerg?-las como uma amea?a ?s suas pr?ticas de ensino exercidas. Para a utiliza??o das TICEM nos processos de ensino e aprendizagem, os professores dever?o ser formados para tal utiliza??o, especialmente por meio de forma??o continuada aliada a instrumentos tais como atividades explorat?rias e softwares educativos, com destaque para o GeoGebra. Tal forma??o pode possibilitar aos professores, uma inova??o das pr?ticas pedag?gicas e metodol?gicas nos processos de ensino da Matem?tica. Dessa maneira, o uso do software GeoGebra pode favorecer uma aprendizagem significativa para os alunos e possibilitar novas pr?ticas pedag?gicas aos professores.The present research investigates the use of didactic resources based on Information and Communication Technologies in Mathematics Education - TICEM, as an important part of the training work of the students and of the teacher himself, since they enable the construction of solid knowledge that can help, mainly, in the development of active subjects in modern society. As a focus of the research, we chose the Mathematics teaching processes in Elementary School, in which the teaching of Algebra and Geometry can generate obstacles in the learning process. The research methodology focused on continuing education, based on the planning and implementation of a mini-course conducted with Mathematics Teachers of the State Public School of Minas Gerais. The main results of the research point to the urgency of teachers to insert educational software in their pedagogical practices, thus enabling new methodologies for teaching mathematics. Teachers need to use TICEM as collaborative tools and not see them as a threat to their teaching practices. In order to use TICEM in the teaching and learning processes, teachers should be trained to do so, especially through continuous training in conjunction with instruments such as exploratory activities and educational software, especially GeoGebra. Such training may enable teachers to innovate pedagogical and methodological practices in Mathematics teaching processes. In this way, the use of the GeoGebra software can favor a significant learning for the students and allow new pedagogical practices to the teachers

Dual crop coefficient approach in vitis vinifera L. cv. Loureiro

Vineyard irrigation management in temperate zones requires knowledge of the crop water requirements, especially in the context of climate change. The main objective of this work was to estimate the crop evapotranspiration (ETc) of Vitis vinifera cv. Loureiro for local conditions, applying the dual crop coefficient approach. The study was carried out in a vineyard during two growing seasons (2019?2020). Three irrigation treatments, full irrigation (FI), deficit irrigation (DI), and rainfed (R), were considered. The ETc was estimated using the SIMDualKc model, which performs the soil water balance with the dual Kc approach. This balance was performed by calculating the basal coefficients for the grapevine (Kcb crop) and the active soil ground cover (Kcb gcover), which represent the transpiration component of ETc and the soil evaporation coefficient (Ke). The model was calibrated and validated by comparing the simulated soil water content (SWC) with the soil water content data measured with frequency domain reflectometry (FDR). A suitable adjustment between the simulated and observed SWC was obtained for the 2019 R strategy when the model was calibrated. As for the vine crop, the best fit was obtained for Kcb full ini = 0.33, Kcb full mid = 0.684, and Kcb full end = 0.54. In this sense, the irrigation schedule must adjust these coefficients to local conditions to achieve economically and environmentally sustainable production.E518-D54F-9490 | Susana Miguel Afonso Mendes MouraN/

Boundary-element parallel-computing algorithm for the microstructural analysis of general composites.

A standard continuum-mechanics-based 3D boundary-element (BE) algorithm has been devised to the microstructural modeling of complex heterogeneous solids such as general composites. In the particular applications of this paper, the mechanical properties of carbon-nanotube?reinforced composites are estimated from three-dimensional representative volume elements (RVEs). The shell-like thin-walled carbon nanotubes (CNTs) are also simulated with 3D BE models, and a generic subregion-by-subregion (SBS) algorithm makes the microstructural description of the CNT?polymer systems possible. In fact, based on this algorithm, a general scalable BE parallel code is proposed. Square and hexagonal fiber-packing patterns are considered to simulate the 3D composite microstructures

Analysis of the collection of public revenue municipalities of the state of Santa Catarina.

A an?lise da arrecada??o da receita municipal em per?odos de crise econ?mica que perpassa no momento atual exp?e a necessidade de pesquisas que investiguem os principais determinantes da arrecada??o e seus impactos na receita p?blica municipal. Contudo, poucos trabalhados buscam um maior entendimento do comportamento das arrecada??es de receitas no Brasil, em especial, a n?vel municipal para o estado de Santa Catarina. Diante disso, o presente artigo tem o objetivo de analisar o impacto dos principais determinantes da arrecada??o no intervalo de 2012 a 2015, para os munic?pios catarinenses. Os resultados apontaram uma rela??o positiva entre as receitas tribut?rias e transfer?ncias correntes e a popula??o, o n?mero de empresas e o n?mero de v?nculos empregat?cios, a depender do tipo de receita avaliado. Al?m disso, o valor adicionado na agricultura, quando significativo, se mostrou mais impactante nas receitas dos munic?pios de Santa Cataria do que o de outros setores.The analysis of the collection of the municipal revenue in periods of economic crisis that pervades at the present moment exposes the need for research that investigates the main determinants of the collection and its impacts on the municipal public revenue. However, few workers seek a better understanding of the behavior of revenue collections in Brazil, especially at the municipal level for the state of Santa Catarina. Therefore, the objective of this article is to analyze the impact of the main determinants of collection in the interval between 2012 and 2015 for the municipalities of Santa Catarina. The results showed a positive relation between tax revenues and current transfers and the population, the number of companies and the number of employment bonds, depending on the type of income evaluated. In addition, value added in agriculture, when significant, was more impacting in the revenues of the municipalities of Santa Cataria than in other sectors

Post-occupancy evaluation in a medium city of Santa Catarina : perceptions about the users? satisfaction and needs.

Este artigo ? o resultado de uma pesquisa realizada em um conjunto habitacional de baixa renda, na cidade de Chapec?/SC, que visou avaliar o desempenho funcional das edifica??es e investigar o comportamento e o n?vel de satisfa??o das fam?lias. Para tanto, utilizou-se uma abordagem com m?ltiplos m?todos de avalia??o p?s-ocupa??o (APO), quantitativos e qualitativos, como an?lise walkthrough, question?rio e grupo focal. Observou-se que o PMCMV demonstra pouca preocupa??o com a diversidade socioecon?mica e cultural, bem como em atender a perfis fora do padr?o m?dio existente. Sobre a unidade habitacional, percebeu-se pouca funcionalidade, al?m de um n?mero de ambientes e ?rea ?til inferior ? necessidade de boa parte das fam?lias. Todos esses fatores colaboram para um baixo n?vel de satisfa??o dos moradores e uma r?pida obsolesc?ncia da edifica??o. Al?m disso, a compara??o com estudos similares realizados em outras localidades evidenciou a import?ncia da realiza??o de APOs em diversas regi?es do pa?s, gerando um panorama global do tema e divulgando diferen?as referentes ? diversidade cultural e ambiental.This paper is the result of a research carried out in a low income housing complex in the city of Chapec?/SC, which aims to evaluate the functional performance of the buildings and investigate the behavior and level of family satisfaction. For that, an approach was used with multiple methods of post-occupancy evaluation (POE), quantitative and qualitative, such as walkthrough analysis, questionnaire and focus group. The PMCMV shows little concern with socioeconomic and cultural diversity, as well as attending profiles outside the existing average standard. About the housing unit, low levels of functionality was detected, as well as a number of rooms and a living area that was less than the need of most families. All these factors contribute to a low level of satisfaction of the residents and a rapid obsolescence of the building. In addition, the comparison with similar studies carried out in other locations showed the importance of POEs in several regions of the country, generating a global panorama of the theme and disseminating differences regarding cultural and environmental diversity

Dual mechanism of brain injury and novel treatment strategy in maple syrup urine disease

Maple syrup urine disease (MSUD) is an inherited disorder of branched-chain amino acid metabolism presenting with lifethreatening cerebral oedema and dysmyelination in affected individuals. Treatment requires life-long dietary restriction and monitoring of branched-chain amino acids to avoid brain injury. Despite careful management, children commonly suffer metabolic decompensation in the context of catabolic stress associated with non-specific illness. The mechanisms underlying this decompensation and brain injury are poorly understood. Using recently developed mouse models of classic and intermediate maple syrup urine disease, we assessed biochemical, behavioural and neuropathological changes that occurred during encephalopathy in these mice. Here, we show that rapid brain leucine accumulation displaces other essential amino acids resulting in neurotransmitter depletion and disruption of normal brain growth and development. A novel approach of administering norleucine to heterozygous mothers of classic maple syrup urine disease pups reduced branched-chain amino acid accumulation in milk as well as blood and brain of these pups to enhance survival. Similarly, norleucine substantially delayed encephalopathy in intermediate maple syrup urine disease mice placed on a high protein diet that mimics the catabolic stress shown to cause encephalopathy in human maple syrup urine disease. Current findings suggest two converging mechanisms of brain injury in maple syrup urine disease including: (i) neurotransmitter deficiencies and growth restriction associated with branchedchain amino acid accumulation and (ii) energy deprivation through Krebs cycle disruption associated with branched-chain ketoacid accumulation. Both classic and intermediate models appear to be useful to study the mechanism of brain injury and potential treatment strategies for maple syrup urine disease. Norleucine should be further tested as a potential treatment to prevent encephalopathy in children with maple syrup urine disease during catabolic stress

Training systems evaluation of vitis vinifera L. Alvarinho (vinhos verdes PDO region) to physiological and productive parameters

In the Vinhos Verdes wine region, the largest Protected Designation of Origin (PDO) region in Portugal, the most common ?Alvarinho? training system is single downward shoot positioning (DSP), which is currently being replaced by vertical shoot positioning (VSP). This work aimed to evaluate physiological and productive parameters of ?Alvarinho? grapevines in both training systems. This study was carried out in 2018 in a commercial vineyard in Mon??o (north-west of Portugal). It was divided into two plots, of 1 ha and 0.5 ha respectively, and each with a different training system. On each plot, 4 replicates were established with 7 vines replicate-1. Soil texture on both plots is sandy loam from schist, and soil water capacity is 290 mm m-1. The vineyards were planted in 2009, with 196-17 rootstock, and with a density of 1111 vines ha-1, in north-south oriented rows. From July to August, nine irrigation events were performed applying a total of 95 mm of water on each plot. From blooming until harvesting, in 2 vines replicate-1, the soil water content, the crop water stress index (CWSI) and the index of relative stomatal conductance (IG) were recorded along with the stem water potential, chlorophyll content and photosynthetically active radiation. The production and vegetative parameters (bunch number, weight per bunch, pruning wood weight and Ravaz index) were calculated on 7 vines replicate-1. From veraison until harvesting the DSP system showed higher stem water potential than VSP, yet no differences in stress indicators (CWSI and IG) were found between training systems. The main differences were in yield parameters where the DSP showed more bunches per vine (95 vs. 81), higher production per vine (13 vs. 9.1 kg vine-1), and higher Ravaz index (6.2 vs. 2.5).E518-D54F-9490 | Susana Miguel Afonso Mendes Mourainfo:eu-repo/semantics/publishedVersio

The institutional approach about of the international trade in counterpoint to theory of the comparative advantages : the japanese system of innovations.

O presente trabalho analisa a vis?o institucional em rela??o ? participa??o de uma na??o no com?rcio internacional ? e o impacto que as mudan?as institucionais no longo prazo acabam tendo sobre a lideran?a tecnol?gica mundial ? em contraponto ? Teoria das vantagens comparativas ao tratar desta quest?o. A argumenta??o aqui defendida, com base em uma pesquisa hist?rica/ bibliogr?fica, ? que a vis?o institucional pode dar uma resposta consistente para explicar as mudan?as ocorridas nas ?ltimas d?cadas na posi??o de pa?ses como o Jap?o, por exemplo, enquanto players na arena do com?rcio internacional em produtos de alto valor agregado. Isto ocorre devido ao fato de a Economia Institucional levar em conta a diversidade de fatores que afetam o desempenho de uma na??o, como por exemplo, o investimento em educa??oThe present work analyzes the institutional vision regarding the participation of a nation in international trade - and the impact that changes in long-term institutional end up taking on the global technology leadership in counterpoint the Theory of comparative advantage - when dealing this issue. The argumentation advocated here, based on a history / bibliographical research, it is that the institutional view can give a consistent answer to explain the changes in recent decades in the position of countries like Japan, for example, while players in the arena of international trade in high value-added products. This occurs due to the fact of the Institutional Economics take account the diversity of factors that affect the performance of a nation, like for example, the investment in educatio

Fermenta??o alco?lica de hidrolisado hemicelul?sico de torta de girassol por Galactomyces geotrichum UFVJM-R10 e Candida akabanensis UFVJM-R131

The use of the hemicellulosic fraction of plants for the production of second generation bioethanol depends on microorganisms capable to ferment pentoses. Two yeast strains habile to xylose fermenting in synthetic medium,?Candida akabanensis?UFVJM-R131 and?Galactomyces geotrichum?UFVJM-R10, not yet registered in the literature for the production of bioethanol, were evaluated here in the alcoholic fermentation of the hemicellulosic hydrolyzate from sunflower cake. The biomass hydrolysis was performed by 38 minutes at 120 ?C / 1 atm with 6% H2SO4?solution and solid / liquid ratio of 1:3.2. Chromatographic characterization of the hemicellulosic hydrolyzate showed the presence of glucose (7.57 g L-1), xylose (19.53 g L-1) and arabinose (8.85 g L-1), besides 5-hydroxymethylfurfural (0.71 g L-1), furfural (0.05 g L-1) and acetic acid (5.27 g L-1). Both yeasts were able to produce ethanol from the acid hydrolyzate from sunflower cake. The fermentation carried out with?G. geotrichum?UFVJM-R10 and?C. akabanensis?UFVJM-R131 presented YP/S?values of 0.29 and 0.27 g?ethanol?g-1sugars, respectively. The amounts of the inhibitors identified in the hydrolyzate did not affect the efficiency of the alcoholic fermentation. The supplementation of the hydrolyzate with nitrogen and mineral sources increased the rate of consumption of xylose and arabinose

Influencia del sistema de producci?n en la calidad de la canal de cerdos de raza b?sara

La utilizaci?n de razas locales en sistemas de producci?n alternativos presenta una serie de ventajas, como la gesti?n medioambiental, la biodiversidad y la producci?n agr?cola sostenible orientada hacia un mercado de productos de calidad diferenciada, especialmente en ?reas desfavorecidas. En este trabajo se estudi? la influencia de dos sistemas de producci?n en la calidad de la canal de cerdos de raza B?sara. La alimentaci?n recibida fue igual en ambos casos. En la fase de crecimiento (98 d?as) se alimentaron con pienso compuesto comercial, mientras que durante el acabado se les administr? pienso compuesto y harina de ma?z. Se recogieron datos de peso vivo y canal despu?s de 24h a 4?C y se calcul? el rendimiento de la canal. Se realizaron medidas morfom?tricas lineales de la media canal derecha, tras 24h post-mortem. El espesor de la grasa dorsal se midi? a nivel de la 1? costilla, la ?ltima costilla, en el m?sculo gluteus medius en el ?rea m?s espesa de grasa (extremo craneal) y en la de inferior espesura. Teniendo en cuenta los resultados obtenidos, no se observan diferencias significativas en ninguno de los par?metros analizados. El peso de la canal fr?a (94,23?7,55 kg) y el rendimiento (75,51?1,48%) as? como las medidas morfom?tricas mostraron valores pr?cticamente coincidentes entre ambos tipos de sistemas de producci?n. Tampoco se observaron diferencias en el espesor de la grasa dorsal. Las cuatro medidas indican un grado elevado y homog?neo de grasa dorsal, caracter?stica frecuentemente constatada en razas de cerdos no mejoradas (razas locales) existentes en todo el mundo.FE1B-06B2-126F | Jos? Pedro Pinto de Ara?joN/