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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Epidemiologia da dengue nas regiões de São José do Rio Preto e Araçatuba, São Paulo, 1990 a 1996 / Dengue Epidemiology in tbe regions of São José do Rio Preto and Araçatuba, São Paulo, from 1990 tbrough 1996

Chiaravalloti Neto, Francisco 12 August 1999 (has links)
O objetivo do trabalho foi caracterizar a transmissão de dengue nas regiões de São José do Rio Preto e Araçatuba, entre 1990 e 1996. Analisaram-se os Coeficientes de Incidência (CI) de casos confirmados laboratorialmente e autóctones de dengue segundo áreas, sexo e idade. Analisaram-se as curvas de CI mensais para as regiões, sub-regiões e municípios. Realizou-se análise espacial, relacionando-se os CI com variáveis sócio-econômicas e demográficas. Construíram-se curvas de CI semanais de casos suspeitos e confirmados laboratorialmente de dengue para investigar a relação entre elas. Os CI obtidos apontam para o risco de ocorrência de dengue hemorrágica. Verificaram-se maiores CI para as mulheres e para pessoas entre 30 e 59 anos. Nos dois últimos períodos estudados, notaram-se, para as várias sub-regiões, maiores níveis de incidência e aumento do número de meses com transmissão, indicando uma possível tendência de endemização da doença. Verificou-se que foi pelos municípios maiores que a transmissão, em geral, se iniciou e se encerrou, e que neles a freqüência de períodos com transmissão foi maior. Verificou-se também, que, nos municípios com melhores situações de instrução, renda e maiores populações, ocorreu, em maior proporção, CI de valores mais altos, podendo, este fato, estar relacionado com a atração exercida por eles. Estas evidências mostram que um possível fator de risco a ser utilizado, em uma estratificação de medidas de controle, seria o tamanho do município. Foram obtidas relações entre as séries de CI de casos suspeitos e confirmados laboratorialmente de dengue, possibilitando-se estimar as últimas a partir das primeiras. / This study aims to characterize the dengue transmission in th e regions of São José do Rio Preto and Araçatuba, São Paulo, between 1990 and 1996. Incidence Rates (IR) of in laboratory confirmed dengue cases as well as autochthonous dengue cases have been analyzed according to areas, gender and age. Monthly IR curves have been analyzed for the regions, sub-regions and municipal districts. A spatial analysis has been carried out relating the IR with social-economical and demographic variables. Weekly IR curves of both suspected cases and in laboratory confirmed dengue cases have been built in order to investigate the relationship between them. The obtained IR point for a risk of hemorrhagic dengue occurrence. It was noticed a higher risk of dengue occurrence for women and among people between 30 and 59 years. In the last studied periods it was also noticed greater incidence in several sub-areas and increase of month periods with transmission, indicating a possible disease spreading. The transmission, in general, started and finished in large municipal districts, and in those the transmission period was more frequent. It was also observed that, in large municipal districts with better educational level and income variables, IR showing higher levels occured in a larger exrtent than in smaller ones whose indicators of those variables were worst, and the explanation for this can be related with the attraction exercised by the great population centers. These evidences have showed that a possible risk factor to be used in the stratification of the control measures would be the size of the municipal district. It was obtained the relationship between the IR series of suspected dengue cases and in laboratory confirmed cases enabling us to measure the last ones starting from the first ones.
2

Epidemiologia da dengue nas regiões de São José do Rio Preto e Araçatuba, São Paulo, 1990 a 1996 / Dengue Epidemiology in tbe regions of São José do Rio Preto and Araçatuba, São Paulo, from 1990 tbrough 1996

Francisco Chiaravalloti Neto 12 August 1999 (has links)
O objetivo do trabalho foi caracterizar a transmissão de dengue nas regiões de São José do Rio Preto e Araçatuba, entre 1990 e 1996. Analisaram-se os Coeficientes de Incidência (CI) de casos confirmados laboratorialmente e autóctones de dengue segundo áreas, sexo e idade. Analisaram-se as curvas de CI mensais para as regiões, sub-regiões e municípios. Realizou-se análise espacial, relacionando-se os CI com variáveis sócio-econômicas e demográficas. Construíram-se curvas de CI semanais de casos suspeitos e confirmados laboratorialmente de dengue para investigar a relação entre elas. Os CI obtidos apontam para o risco de ocorrência de dengue hemorrágica. Verificaram-se maiores CI para as mulheres e para pessoas entre 30 e 59 anos. Nos dois últimos períodos estudados, notaram-se, para as várias sub-regiões, maiores níveis de incidência e aumento do número de meses com transmissão, indicando uma possível tendência de endemização da doença. Verificou-se que foi pelos municípios maiores que a transmissão, em geral, se iniciou e se encerrou, e que neles a freqüência de períodos com transmissão foi maior. Verificou-se também, que, nos municípios com melhores situações de instrução, renda e maiores populações, ocorreu, em maior proporção, CI de valores mais altos, podendo, este fato, estar relacionado com a atração exercida por eles. Estas evidências mostram que um possível fator de risco a ser utilizado, em uma estratificação de medidas de controle, seria o tamanho do município. Foram obtidas relações entre as séries de CI de casos suspeitos e confirmados laboratorialmente de dengue, possibilitando-se estimar as últimas a partir das primeiras. / This study aims to characterize the dengue transmission in th e regions of São José do Rio Preto and Araçatuba, São Paulo, between 1990 and 1996. Incidence Rates (IR) of in laboratory confirmed dengue cases as well as autochthonous dengue cases have been analyzed according to areas, gender and age. Monthly IR curves have been analyzed for the regions, sub-regions and municipal districts. A spatial analysis has been carried out relating the IR with social-economical and demographic variables. Weekly IR curves of both suspected cases and in laboratory confirmed dengue cases have been built in order to investigate the relationship between them. The obtained IR point for a risk of hemorrhagic dengue occurrence. It was noticed a higher risk of dengue occurrence for women and among people between 30 and 59 years. In the last studied periods it was also noticed greater incidence in several sub-areas and increase of month periods with transmission, indicating a possible disease spreading. The transmission, in general, started and finished in large municipal districts, and in those the transmission period was more frequent. It was also observed that, in large municipal districts with better educational level and income variables, IR showing higher levels occured in a larger exrtent than in smaller ones whose indicators of those variables were worst, and the explanation for this can be related with the attraction exercised by the great population centers. These evidences have showed that a possible risk factor to be used in the stratification of the control measures would be the size of the municipal district. It was obtained the relationship between the IR series of suspected dengue cases and in laboratory confirmed cases enabling us to measure the last ones starting from the first ones.
3

CCM3 as applied to an idealized all land zonally symmetric planet, Terra Blanda 3

Mahajan, Salil 17 February 2005 (has links)
Community Climate Model 3 (CCM3) is run on an idealized all land zonally symmetric planet (Terra Blanda) with no seasonality, no snow and fixed soil moisture to obtain a stationary time series effectively much longer than conventional runs with geography and seasons. The surface temperature field generated is studied to analyze the spatial and temporal spectra, estimate the length scale and time scale of the model, and test the linearity of response to periodic and steady heat source forcings. The length scale of the model is found to be in the range of 1000-2000 km and the time scale is estimated to be 24 days for the global average surface temperature field. The response of the global average temperature is found to be fairly linear to periodic and the steady heat source forcings. The results obtained are compared with the results of a similar study that used CCM0. Fluctuation Dissipation theorem is also tested for applicability on CCM3. The response of the surface temperature field to a step function forcing is demonstrated to be very similar to the decay of naturally occurring anomalies, and the auto-correlation function. Return period of surface temperature anomalies is also studied. It is observed that the length of the data obtained from CCM3, though sufficient for analysis of first and second moments, is significantly deficient for return period analysis. An AR1 process is simulated to model the global averaged surface temperature of Terra Blanda 3 to assess the sampling error associated with short runs.

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