23,345 research outputs found
Management of estuarine beaches on the Amazon coast though the application of recreational carrying capacity indices
The purpose of this paper is to determine the Recreational Carrying Capacity of three estuarine beaches (Colares, Marudá and Murubira) on the Amazon coast of Brazil, based on the combined assessment of natural conditions and visitor facilities. In the final analysis, the carrying capacity of Colares beach was estimated to be 1089 visitors per day, and that of Murubira beach, 238 visitors per day. At Marudá beach, however, the inadequate quality of the water resulted in an RCC of zero, indicating that the beach should not be visited for recreational use. The results of this study may provide a valuable diagnostic tool for the development of future state and municipal coastal management programs. We believe that the procedures adopted in this study are applicable to other estuarine beaches on the Amazon coast, as well as in other estuarine beaches elsewhere with similar natural characteristics.Peer ReviewedPostprint (author's final draft
Levantamento da incidência do amarelinho ou CVC nos pomares de citros no Estado do Amazonas.
Levantamento da doenca amarelinha causada pela bacteria Xylella fastidiosa nos pomares de citros no Estado do Amazonas (Brasil).bitstream/item/83143/1/Pesquisa-99-1999.pd
Controle químico da Sigatoka negra da bananeira. I - Trifloxistrobin, Propiconazole e Difenoconazole.
A Sigatoka negra, causada pelo fungo Mycosphaerella fijiensis (fase anamórfica: Paracercospora fijiensis (Morelet) Deighton, é a doença mais grave da bananeira, causando perdas de 100% da produção, quando não se efetua o controle. Os fungicidas trifloxistrobin, difenoconazole e propiconazole, foram eficientes no controle da Sigatoka negra, aplicados a intervalos regulares de 14 dias.bitstream/CPAA-2009-09/6808/1/ComTec-7.pd
O acervo raro da biblioteca Milton de Albuquerque, da Embrapa Amazônia Oriental.
bitstream/item/63592/1/Oriental-Doc187.PD
Comportamento de bananeiras submetidas a diferentes níveis de sombreamento.
Objetiva-se avaliar, por meio de cultivos intercalares e em trilhas na capoeira, a influência dos diferentes níveis de sombreamento na incidência da Sigatoka negra.bitstream/item/89173/1/PA-35-Mirza.pd
Optimal alarm systems for FIAPARCH processes
In this work, an optimal alarm system is developed to predict whether a financial time series modeled via Fractionally Integrated Asymmetric Power ARCH (FIAPARCH) models, up/downcrosses some particular level and give an alarm whenever this crossing is predicted. The paper presents classical and Bayesian methodology for producing optimal alarm systems. Both methodologies are illustrated and their performance compared through a simulation study. The work finishes with an empirical application to a set of data concerning daily returns of the Sao Paulo Stock Market
Using stochastic space-time models to map extreme precipitation in southern Portugal
The topographic characteristics and spatial climatic diversity are significant in the South of continental Portugal where the rainfall regime is typically Mediterranean. Direct sequential cosimulation is proposed for mapping an extreme precipitation index in southern Portugal using elevation as auxiliary information. The analysed index (R5D) can be considered a flood indicator because it provides a measure of medium-term precipitation total. The methodology accounts for local data variability and incorporates space-time models that allow capturing long-term trends of extreme precipitation, and local changes in the relationship between elevation and extreme precipitation through time. Annual gridded datasets of the flood indicator are produced from 1940 to 1999 on 800 m×800 m grids by using the space-time relationship between elevation and the index. Uncertainty evaluations of the proposed scenarios are also produced for each year. The results indicate that the relationship between elevation and extreme precipitation varies locally and has decreased through time over the study region. In wetter years the flood indicator exhibits the highest values in mountainous regions of the South, while in drier years the spatial pattern of extreme precipitation has much less variability over the study region. The uncertainty of extreme precipitation estimates also varies in time and space, and in earlier decades is strongly dependent on the density of the monitoring stations network. The produced maps will be useful in regional and local studies related to climate change, desertification, land and water resources management, hydrological modelling, and flood mitigation planning
From reading literature in secondary school to its learning assessment in the 12th year national exam
Literature plays a core role in the class of Portuguese Language, a specialised context for teaching literacy competencies. This text reports a study about knowledge and skills privileged in literary texts’ reading in national exams. A document analysis of seventeen exams of Portuguese, used by the Ministry of Education between 1996 and 2012, was conducted to identify the “reading objects” chosen for the exams, the text structures that were the focus of the questions and the reading operations requested. The results show that besides the central role of the national literary canon in the assessment, contemporary poetry texts are the preferred “reading objects”. This allows the conclusion that questions about literary contents aim to evaluate student’s critical thinking regarding works by canonical authors. The study also showed that reading literature is perceived as the act of understanding and (re)constructing the meanings of a text by an active and competent reader.La literatura juega un papel central en la clase de
Lengua Portuguesa, como contexto
especializado para la enseñanza y el aprendizaje de competencias de alfabetización.
Este texto reporta un estudio sobre el conocimiento y las habilidades privilegiadas en los exámenes nacionales externos. Un análisis de diecisiete exámenes de
Portugués, del
Ministerio de Educación entre 1996 y 2012, ha identificado “objetos de lectura”
elegidos, estructuras textuales enfocadas por las preguntas y operaciones de lectura
requeridas. Los resultados revelan el papel central del canon literario nacional en la evaluación y que los textos poéticos contemporáneos son los “objetos de lectura”
preferidos. Se concluye que las preguntas sobre contenidos literarios se plantean
evaluar el pensamiento crítico del estudiante con respecto a las obras de autores
canónicos y que la lectura se percibe como el acto de comprender y (re)construir los significados de un texto por un lector activo y competente.La littérature joue un rôle central dans la classe de
Langue Portugaise, un contexte spécialisé pour l’enseignement des compétences en littératie. Ce texte présente une
étude sur les connaissances et compétences privilégiées dans la lecture de textes
littéraires aux examens nationaux. Une analyse de dix-sept examens de
Portugais, utilisés par le Ministère de l’Éducation entre 1996 et 2012, a été menée afin d’identifier
“objets de lecture” choisis pour les examens, structures de texte au centre des questions
et opérations de lecture demandées. Les résultats montrent que, outre le rôle central du
canon littéraire dans l’évaluation, textes de poésie contemporaine sont les “objets de
lecture” préférés. Cela permet la conclusion que les questions concernant le contenu
littéraire visent à évaluer la pensée critique de l’élève concernant les œuvres d’auteurs
canoniques. L’étude a également montré que la lecture littéraire est perçue comme
(re)construction de la signification d’un texte par un lecteur compétent.CIED - UMinhoinfo:eu-repo/semantics/publishedVersio
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