17 resultados para Luciana Ferreira da Costa


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Orbital remote sensing has been used as a beneficial tool in improving the knowledge on oceanographic and hydrodynamic aspects in northern portion of the continental shelf of Rio Grande do Norte, offshore Potiguar Basin. Aspects such as geography, temporal and spatial resolution combined with a consistent methodology and provide a substantial economic advantage compared to traditional methods of in situ data collecting. Images of the Moderate Resolution Imaging Spectroradiometer (MODIS) sensor onboard NASA's AQUA satellite were obtained to support systematic data collections related to the campaign of environmental monitoring and characterization of Potiguar Basin, held in May 2004. Images of Total Suspension Matter (TSM) and values of radiance standard were generated for the calculation of concentrations of total suspension matter (TSM), chlorophyll-a and sea surface temperature (SST). These data sets were used for statistical comparisons between measures in situ and satellite estimates looking validate algorithms or develop a comprehensive regional approach empirically. AQUA-MODIS images allowed the simultaneous comparison of two-dimensional water quality (total suspension matter), phytoplankton biomass (chlorophyll-a) variability and physical (temperature). For images of total suspension matter, the generated models showed a good correlation with the field data, allowing quantitative and qualitative analysis. The images of chlorophyll-a showed a consistent correlation with the in situ values of concentration. The algorithms adjusted for these images obtained a correlation coefficient fairly well with the data field in order that the sensor can be having an effect throughout the water column and not just the surface. This has led to a fit between the data of chlorophyll-the integration of the average sampling interval of the entire water column up to the level of the first optical depth, with the data generated from the images. This method resulted in higher values of chlorophyll concentration to greater depths, due to the fact that we are integrating more values of chlorophyll in the water column. Thus we can represent the biomass available in the water column. Images SST and SST measures in situ showed a mean difference DT (SST insitu - SST sat) around -0.14 ° C, considered low, making the results very good. The integration of total suspension matter, chlorophyll-a, the temperature of the sea surface (SST) and auxiliary data enabled the recognition of some of the main ways to fund the continental shelf. The main features highlighted were submerged canyons of rivers Apodi and Açu, some of the lines and beachrocks reefs, structural highs and the continental shelf break which occurs at depths around -60 m. The results confirmed the high potential for use of the AQUA-MODIS images to environmental monitoring of sea areas due to ease of detection of the field two-dimensional material in suspension on the sea surface, temperature and the concentration of chlorophyll-a

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O tema deste estudo visa pesquisar o papel e atuação das Organizações Não Governamentais - ONGs, terceiro setor do turismo, no estado do Rio Grande do Norte - RN, identificando a atuação e participação no turismo, para, assim, elencar suas contribuições e benefícios para as populações locais, para o usuário dos serviços e para o incremento da economia no Estado. Analisando as que atuam no turismo do Rio Grande do Norte, procurou-se identificar suas contribuições, características e estruturas, descrever as suas formas de atuação e os respectivos resultados e influências. Buscou-se verificar se a organização atua na área de turismo e local adequado para o desenvolvimento das atividades turísticas nos seus projetos, na gestão administrativa e operacional. Para tal, utilizamos a teoria do livro “Análise Estrutural do Turismo” (Beni), bem como o Modelo Referencial do Sistema de Turismo (SISTUR). Avaliando se o tempo em que essa instituição atua na área propiciará às pessoas, de acordo com seus perfis, assimilarem conhecimento como gestoras no processo dos projetos. Observamos como funciona a Gestão de ONGs, a fim de identificarmos se as ONGs trabalham adequadamente as funções gerenciais. Se há envolvimento da organização nos projetos e nas suas fases de processo, assim como, sua importância e dificuldades encontradas na relação estabelecida entre as ONGs e a sociedade. A partir disso, poderemos identificar o envolvimento da comunidade que se beneficia.