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Search Results: 1 - 10 of 11865 matches for " Magalh?es "
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Estimation of Tree Biomass, Carbon Stocks, and Error Propagation in Mecrusse Woodlands  [PDF]
Tarquinio Mateus Magalhes, Thomas Seifert
Open Journal of Forestry (OJF) , 2015, DOI: 10.4236/ojf.2015.54041
Abstract: We performed a biomass inventory using two-phase sampling to estimate biomass and carbon stocks for mecrusse woodlands and to quantify errors in the estimates. The first sampling phase involved measurement of auxiliary variables of living Androstachys johnsonii trees; in the second phase, we performed destructive biomass measurements on a randomly selected subset of trees from the first phase. The second-phase data were used to fit regression models to estimate below and aboveground biomass. These models were then applied to the first-phase data to estimate biomass stock. The estimated forest biomass and carbon stocks were 167.05 and 82.73 Mg·ha-1, respectively. The percent error resulting from plot selection and allometric equations for whole tree biomass stock was 4.55% and 1.53%, respectively, yielding a total error of 4.80%. Among individual variables in the first sampling phase, diameter at breast height (DBH) measurement was the largest source of error, and tree-height estimates contributed substantially to the error. Almost none of the error was attributable to plot variability. For the second sampling phase, DBH measurements were the largest source of error, followed by height measurements and stem-wood density estimates. Of the total error (as total variance) of the sampling process, 90% was attributed to plot selection and 10% to the allometric biomass model. The total error of our measurements was very low, which indicated that the two-phase sampling approach and sample size were effective for capturing and predicting biomass of this forest type.
Cria??o de questionário para detec??o de comportamentos atípicos em bebês
Habib, Es;Magalhes, LC;
Brazilian Journal of Physical Therapy , 2007, DOI: 10.1590/S1413-35552007000300002
Abstract: introduction: regulatory disorders (rds) are manifested by sensorimotor, sleep, feeding and adaptation abnormalities in the first three years of life, which seem to indicate future child development problems. there is evidence that rds are related to attention, learning and behavioral problems that are observed at school age. therefore, it is important to invest in resources that enable their early detection. the objective of this study was to describe the process of creating a questionnaire to detect atypical behavior suggestive of rds, among 6 to 12-month-old infants. method: the instrument was developed in two stages: (a) planning and constructing the test and (b) content validity examination through an expert panel consisting of researchers and professionals with recognized experience in the field. results: the data indicated that the topic is relevant and that, according to the scores from the panel, the items in the questionnaire are easily observed (96.8%), clearly written (94.5%), assess important aspects of behavior (89.6%) and can potentially detect atypical behavior in 6 to 12-month-old infants (85.4%). conclusion: based on this study, the items were reviewed, resulting in a questionnaire with 50 items that will be applied experimentally in future work. it is expected that the questionnaire will be useful for early detection of problems that affect a great number of children.
A cobran?a do ouro do rei nas Minas Gerais: o fim da capita??o - 1741-1750
Magalhes, Joaquim Romero;
Tempo , 2009, DOI: 10.1590/S1413-77042009000200009
Abstract: the capitation or individual tax was a collection procedure equivalent to one fifth or the gold extraction in minas gerais. this 1735 royal imposition lasted till 1750 and caused strong opposition from the municipalities in that region. many attempts were made to abrogate it until the new king d. josé decided to revoke it. it is the aim of this article to survey the capitation challenge process.
O jogo como pretexto educativo: educar e educar-se em curso de forma??o em saúde
Magalhes, Cleidilene Ramos;
Interface - Comunica??o, Saúde, Educa??o , 2007, DOI: 10.1590/S1414-32832007000300021
Abstract: this paper focuses on an educational experiment with the use of a game, which was carried out with freshmen medical students from a public federal education institution. the game was used as a privileged strategy to appraise the students' communication, spontaneity, and sensitivity in the health educational process. through this game it was possible to broach the subject "mental health" to the students, and they have, as a result, expressed their feelings as beginners in a medicine course. this experience has led to the learning of both students and professors, what in a freirean perspective is seen as a dialogic process of mutual formation. its development prompted the rethinking of teaching in health, as well as subsidized the re-orientation of the process of preventing and promoting mental health by means of proposals and supporting programs to students already enrolled in the institution.
Os espa?os/tempos da pesquisa sobre o professor
Carvalho, Janete Magalhes;
Educa??o e Pesquisa , 2002, DOI: 10.1590/S1517-97022002000200006
Abstract: the article analyzes how the issue of the teacher appears in the brazilian scientific literature. it is based on the discourse found at the brazilian society for the progress of science (sbpc) meetings, a society that congregates scientists from all areas of knowledge, and is representative of the scientific production of teachers and graduate students from various brazilian regions and institutions. the work makes use of a historical-documental approach; its sources of information are the abstracts published in the society's annals of 2001 and from the 1980s. results show: a. an extraordinary increase in the number of papers on the teacher, and the continuing evidence of their institutional (public university) and regional (southeastern) origin; b. a change of emphasis in the themes, from the education of higher education teachers to the pedagogical practice that takes place in the elementary school everyday life; c. a change in the methodological approach, from the exploratory-descriptive studies to the critical research-action concerned with the intervention in the elementary school everyday life. the article asserts the negation of the spaces/times of the scientific production on the teacher, because spaces/times are actions of historical agents, exhibiting exchanges and collective sharing, and not the determination of the "proper place" of the researcher and/or of "stamped authorship". the discourses presented seemed, each one of them, to occupy their isolated "proper place", preventing their understanding as the whole of the work on the issue of the teacher, failing to reveal the fabric of a collective theme with its genesis in the spaces/times of the academy in its relationship with the social and educational reality of brazil.
O primado do mercado interno: a proeminência do espa?o canavieiro de Minas Gerais no último século de hegemonia das atividades agroa?ucareiras tradicionais no Brasil
Godoy, Marcelo Magalhes;
Estudos Econ?micos (S?o Paulo) , 2008, DOI: 10.1590/S0101-41612008000400005
Abstract: during 19th century and the beginning of the following century, minas gerais was the most important sugarcane plantation area in brazil. in the 1830's, there were 4.150 productive unities working with sugarcane transformation in minas. the sum of all sugar mills in the northeast coast, north of rio de janeiro and the plains of s?o paulo did not reach half of the number of sugar mills in minas gerais. in the same period, it is estimated that 85.000 captives was employed in the fabrication of sugar and of aguardente. that such a large contingent had neither been employed in any other sugarcane plantation area nor in any other period of brazilian slavery history. furthermore, it is estimated that in the 1830's minas gerais produced 33.200 tons of sugar. the sugar production of s?o paulo did not surpass 8.500 tons, and the production of pernambuco was 27.000. the sugar exportation of bahia was not more than 30.000 tons and the amount exported by rio de janeiro did not reach 17.000.
Resenha crítica - a literatura convencional sobre crises financeiras nos países "emergentes": os modelos desenvolvidos nos anos 90
Prates, Daniela Magalhes;
Estudos Econ?micos (S?o Paulo) , 2005, DOI: 10.1590/S0101-41612005000200006
Abstract: in the 90s, the succession of financial crises in the so called "emergent countries", with characteristics that haven't been considered by the first-generation models of exchange crises developed in the 80s, was followed by the emergency of new models of exchange crisis. the purpose of this article is to present these models, which have introduced in their analytical framework new elements, how the self-fulfilling expectations and the volatility of the capital flows. firstly, we analyze the models developed after the mexican crise, which have followed the tradition of the second-generation models that emerged after the european monetary system crise. secondly, we examine the models developed after the asian crise, labeled "third generation models", in which the exchange crise is intrinsically linked with a banking crise. we end up with some final considerations.
Cacaso n?o é bem o caso do acaso
Magalhes, Milena;
Alea : Estudos Neolatinos , 2006, DOI: 10.1590/S1517-106X2006000100008
Abstract: on reading the poetry in lero lero, a collection of cacaso's poetical work, this article questions the supposition that marginal poetry has no literary value as it was created through spontaneous expression of day-to-day facts, overlooking poetical elaboration. on the contrary, cacaso's poems point towards the construction of a simulacrum of spontaneity sustained not by a formal unconcern, but, yes, by a refined language, thereby placing the so-called literary values on a tightrope. therefore we shall examine what this may mean and its effects.
Variáveis e desafios do processo decisório no contexto dos Comitês de Bacia Hidrográfica no Brasil
Magalhes Jr., Antonio;
Ambiente & Sociedade , 2001, DOI: 10.1590/S1414-753X2001000800003
Abstract: one sees a rapid process of rivers management modernization in brazil in the 90s - in legal and institutional terms. the approval of law 9,433/97 was one of the main reasons for the changes. it established the national system of hydrographic resources management based on decentralized and participative management principles. the hydrographic basin committees are one of the most important pieces of the new system. the effectiveness of their activities depends on the nature of the decision making process, specially its capacity of dealing with conjectural problems and local interests. this article aims to discuss the qualities and challenges of this process within the committees.
Mundos em miniatura: aproxima??o a alguns aspectos da cartografia portuguesa do Brasil (séculos XVI a XVIII)
Magalhes, Joaquim Romero;
Anais do Museu Paulista: História e Cultura Material , 2009, DOI: 10.1590/S0101-47142009000100006
Abstract: this paper discusses the challenges of 'miniaturizing' the world in portuguese cartography at the dawn of the modern age. it draws attention to the process of amassing experience and geographic knowledge, and their deployment in the cartographic representations of brazil throughout the first three centuries of its colonization.
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