Submitted by Celso Magalhaes (celsomagalhaes@ufrrj.br) on 2017-09-15T12:49:01Z No. of bitstreams: 1 2017 - Camila Caetano da Cruz.pdf: 2972481 bytes, checksum: 198acc8d9a70ab72c6437d4e52f11dd8 (MD5) / Made available in DSpace on 2017-09-15T12:49:01Z (GMT). No. of bitstreams: 1 2017 - Camila Caetano da Cruz.pdf: 2972481 bytes, checksum: 198acc8d9a70ab72c6437d4e52f11dd8 (MD5) Previous issue date: 2017-02-15 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior - CAPES / The Atlantic Forest biome is a biogeographic region with high biodiversity, containing several natural reserves that generate essential resources for all living beings. With its high degree of deforestation over the years due to anthropogenic action, it is necessary to identify and monitor changes in land use and cover, which enables a better understanding of the future of forests and how their changes are occurring. This work aims to evaluate the vegetation dynamics in the Atlantic Forest biome through the Enhanced Vegetation Index (EVI) and its relation with the meteorological variables: average air temperature, rainfall, global solar radiation, relative humidity and evapotranspiration. The study was carried out in the municipality of Pinheiral in the State of Rio de Janeiro. The vegetation data of the product MOD13Q1, from 2001 to 2013, totaling 299 images and monthly data of the meteorological variables of the same period, totaling 780 data, were used. The analyzes of the interannual trends of the time series of vegetation indices were performed using the methodologies of linearity, linear correlation, linear trend, monotonic tendency of Mann Kendall, median trend of Theil-Sen and analysis of temporal profiles as well as trend analysis seasonal. The correlation between the meteorological data and the vegetation index was studied through the multiple linear regression, expressed by the regression coefficient and the coefficient of determination (R?) estimates. Therefore, a land use analysis was carried out in the same study period, from 2001, 2006 and 2013 through classifiers generated for each pixel value of the image. With the generation of temporal profiles of vegetation indices, it was observed that there was a decrease in vegetative vigor, this result was in line with the interannual trends studied, which indicated a decrease in vegetation values for both the monotonic tendency of Mann Kendall and Median trend with values close to 0 and negative, being a non-linear behavior according to the methodologies of linear correlation, linearity and linear trend. According to the Seasonal Trend Analysis, EVI did not present a cycle pattern, with a mixture of cycles, annual and semi-annual. In relation to the correlation of the vegetation indices with the meteorological variables, correlation values were found that reached 0.97 for the R?. Thus, there is a high explanation of the dynamics of the landscape through these climatic variables. The landscape EVI for the Atlantic Forest Biome behaves seasonally and depending on the environmental conditions of the region / O bioma Mata Atl?ntica ? uma regi?o biogeogr?fica com alta biodiversidade, contendo diversas reservas naturais que geram recursos indispens?veis para todos os seres vivos. Com o seu alto grau de desmatamento ao longo dos anos devido a a??o antr?pica, faz-se necess?rio a identifica??o e o monitoramento das mudan?as do uso e cobertura do solo o que possibilita a melhor compreens?o do futuro das florestas e como est?o ocorrendo as suas mudan?as. Com isso, esse trabalho tem o objetivo de avaliar a din?mica da vegeta??o no bioma Mata Atl?ntica atrav?s do ?ndice de Vegeta??o Melhorado (EVI) e qual a sua rela??o com as vari?veis meteorol?gicas: temperatura m?dia do ar, chuva, radia??o solar global, umidade relativa do ar e evapotranspira??o. O trabalho foi realizado no munic?pio de Pinheiral no Estado do Rio de Janeiro. Foram utilizados os dados de vegeta??o do produto MOD13Q1, no per?odo de 2001 a 2013, totalizando 299 imagens e dados mensais das vari?veis meteorol?gicas, do mesmo per?odo, totalizando 780 dados. As an?lises das tend?ncias interanuais das s?ries temporais de ?ndices de vegeta??o foram realizadas por meio das metodologias de linearidade, correla??o linear, tend?ncia linear, tend?ncia monot?nica de Mann Kendall, tend?ncia mediana de Theil-Sen e an?lise dos perfis temporais e tamb?m a an?lise de tend?ncia sazonal. Atrav?s da regress?o linear m?ltipla, expressas pelas estimativas dos coeficientes da regress?o e do coeficiente de determina??o (R2) foi estudada a correla??o entre os dados meteorol?gicos e o ?ndice de vegeta??o. Diante disso, foi realizado uma an?lise de uso do solo no mesmo per?odo de estudo, de 2001, 2006 e 2013 atrav?s de classificadores gerados para cada valor do pixel da imagem. Com a gera??o dos perfis temporais dos ?ndices de vegeta??o, observou-se que houve uma diminui??o no vigor vegetativo, esse resultado foi de encontro ?s tend?ncias interanuais estudadas, que indicaram decr?scimo nos valores da vegeta??o tanto para a tend?ncia monot?nica de Mann Kendall como para a tend?ncia mediana com valores pr?ximos de 0 e negativos, sendo um comportamento n?o linear de acordo com as metodologias de correla??o linear, linearidade e tend?ncia linear. De acordo com a An?lise de Tend?ncia Sazonal, o EVI n?o apresentou um padr?o de ciclo, ocorrendo uma mistura de ciclos, anual e semi-anual. Em rela??o a correla??o dos ?ndices de vegeta??o com as vari?veis meteorol?gicas, foram encontrados valores de correla??o que chegaram a 0,97 para o R?. Dessa forma, verifica-se uma alta explica??o da din?mica da paisagem atrav?s dessas vari?veis clim?ticas. O EVI da paisagem para o Bioma Mata Atl?ntica se comporta de forma sazonal e em fun??o das condi??es ambientais da regi?o

Virtually all methods of learning dynamic models from data start from the same basic assumption: that the learning algorithm will be provided with a single or multiple sequences of data generated from the dynamic model. However, in quite a few modern time series modeling tasks, the collection of reliable time series data turns out to be a major challenge, due to either slow progression of the dynamic process of interest, or inaccessibility of repetitive measurements of the same dynamic process over time. In most of those situations, however, we observe that it is easier to collect a large amount of non-sequence samples, or random snapshots of the dynamic process of interest without time information. This thesis aims to exploit such non-sequence data in learning a few widely used dynamic models, including fully observable, linear and nonlinear models as well as Hidden Markov Models (HMMs). For fully observable models, we point out several issues on model identifiability when learning from non-sequence data, and develop EM-type learning algorithms based on maximizing approximate likelihood. We also consider the setting where a small amount of sequence data are available in addition to non-sequence data, and propose a novel penalized least square approach that uses non-sequence data to regularize the model. For HMMs, we draw inspiration from recent advances in spectral learning of latent variable models and propose spectral algorithms that provably recover the model parameters, under reasonable assumptions on the generative process of non-sequence data and the true model. To the best of our knowledge, this is the first formal guarantee on learning dynamic models from non-sequence data. We also consider the case where little sequence data are available, and propose learning algorithms that, as in the fully observable case, use non-sequence data to provide regularization, but does so in combination with spectral methods. Experiments on synthetic data and several real data sets, including gene expression and cell image time series, demonstrate the effectiveness of our proposed methods. In the last part of the thesis we return to the usual setting of learning from sequence data, and consider learning bi-clustered vector auto-regressive models, whose transition matrix is both sparse, revealing significant interactions among variables, and bi-clustered, identifying groups of variables that have similar interactions with other variables. Such structures may aid other learning tasks in the same domain that have abundant non-sequence data by providing better regularization in our proposed non-sequence methods.

Submitted by Raniere Barreto (raniere.barros@ufvjm.edu.br) on 2018-04-11T18:25:08Z No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) bruce_franca_guimaraes.pdf: 1772676 bytes, checksum: 70105fe5762f394af52a5b015acc42e3 (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2018-04-20T13:42:12Z (GMT) No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) bruce_franca_guimaraes.pdf: 1772676 bytes, checksum: 70105fe5762f394af52a5b015acc42e3 (MD5) / Made available in DSpace on 2018-04-20T13:42:12Z (GMT). No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) bruce_franca_guimaraes.pdf: 1772676 bytes, checksum: 70105fe5762f394af52a5b015acc42e3 (MD5) Previous issue date: 2017 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES) / O foco do presente trabalho ? apresentar um estudo sobre fun??es reais de v?rias vari?veis reais, bem como, estudar as principais t?cnicas envolvendo esse tipo de fun??o. Conv?m destacar os conceitos de limites, derivadas parciais, m?ximos e m?nimos multiplicadores de Lagrange. Na parte final da disserta??o, apresentamos uma aplica??o na Engenharia. / Disserta??o (Mestrado Profissional) ? Programa de P?s-Gradua??o Matem?tica, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2017. / The focus of the present work is to present a study on the real functions of several real variables, as well as to study the main techniques involving this type of function. It is worth mentioning the concepts of limits, partial derivatives, maximum and minimum and Lagrange multipliers. In the final part of the dissertation, we present an application in Engineering.

Made available in DSpace on 2015-03-03T15:36:13Z (GMT). No. of bitstreams: 1 MarcioVS_DISSERT.pdf: 6782214 bytes, checksum: 71e5ba2e6e9d741be401e5153c1b4ad0 (MD5) Previous issue date: 2014-07-11 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior / In this work are presented, as a review and in a historical context, the most used methods to solve quadratic equations. It is also shown the simplest type of change of variables, namely: x = Ay + B where A;B 2 R, and some changes of variables that were used to solve quadratic equations throughout history. Finally, a change of variable, which has been used by the author in the classroom as an alternative method, is presented and the result of this methodoly is illustrated by the responses of a test that was done by the students in classroom / Neste trabalho s?o apresentados, como revis?o e num contexto hist ?rico, os m?todos mais utilizados de resolver equa??es de 2? grau. E apresentado tamb ?m o tipo maissimples de mudan ?a de vari ?veis, a saber: x = Ay + B onde A;B 2 R, e mostrado como algumas mudan ?as de vari ?veis foram utilizadas na resolu ??o de equa ??ess do segundo grau ao longo da hist ?ria. Finalmente, uma mudan ?a de vari ?vel, que tem sido utilizada pelo autor em sala de aula como um m et?do alternativo, e apresentada e o resultado da aplica ??o de tal m ?todo e ilustrado atr?v es das respostas de um teste

Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2016-06-06T21:17:19Z No. of bitstreams: 1 LarissaNascimentoDosSantos_DISSERT.pdf: 2260102 bytes, checksum: ca6ecb3068e94519806f21f62cc4d858 (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2016-06-08T21:45:50Z (GMT) No. of bitstreams: 1 LarissaNascimentoDosSantos_DISSERT.pdf: 2260102 bytes, checksum: ca6ecb3068e94519806f21f62cc4d858 (MD5) / Made available in DSpace on 2016-06-08T21:45:50Z (GMT). No. of bitstreams: 1 LarissaNascimentoDosSantos_DISSERT.pdf: 2260102 bytes, checksum: ca6ecb3068e94519806f21f62cc4d858 (MD5) Previous issue date: 2015-06-19 / Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico (CNPq) / A distribui??o espa?o-temporal das popula??es reflete o ajuste de suas caracter?sticas biol?gicas ?s condi??es ambientais e intera??es bi?ticas, conforme elementos precursores adaptativos e filogen?ticos. A heterogeneidade de habitat e o clima estacional tendem a causar padr?es de atividade dos organismos e de diversidade de esp?cies. Por?m, esses padr?es sazonais e espaciais em comunidades de borboletas em ambientes secos ainda n?o s?o claros. Estudamos uma comunidade de borboletas frug?voras na ESEC Serid?, no nordeste do Brasil, com o intuito de caracterizar a guilda no semi?rido e verificar a contribui??o relativa de vari?veis clim?ticas e vegetacionais sobre a sua composi??o, diversidade e fenofaun?stica. As borboletas foram amostradas mensalmente, durante um ano, e a distribui??o das esp?cies foi associada ?s caracter?sticas estruturais de tr?s fitofisionomias (ex. riqueza e abund?ncia de esp?cies arb?reo-arbustivas, cobertura de dossel, cobertura de herb?ceas, serapilheira) e a dados climatol?gicos (temperatura, pluviosidade e umidade). Foram capturados 9580 indiv?duos de 16 esp?cies de borboletas, pertencentes a quatro subfam?lias (Biblidinae, Charaxinae, Nymphalinae e Satyrinae). A riqueza, abund?ncia e diversidade variaram em diferentes escalas, principalmente no tempo, sendo maiores na esta??o chuvosa, enquanto a ?-diversidade e turnover foram maiores na seca. A distribui??o das esp?cies seguiu principalmente as mudan?as de umidade, pluviosidade e fenologia vegetacional, n?o havendo limites definidos entre habitats. O per?odo de voo foi compartilhado dentro das subfam?lias, as quais devem ter resposta distinta aos est?mulos ambientais, como tamb?m responder ? fenologia de plantas hospedeiras e ter estrat?gias de reprodu??o distintas. Havendo inclusive, ind?cios de adapta??es fisiol?gicas e comportamentais como reprodu??o sazonal e estiva??o. Portanto, houve controle ambiental sobre a distribui??o e diversidade de esp?cies, com o papel chave da associa??o do clima e estrutura da vegeta??o na diferencia??o da comunidade em esta??es do ano, e da disponibilidade e qualidade de recursos sobre a varia??o de abund?ncia das esp?cies, em pequenas escalas. Tais resultados podem dar suporte ao biomonitoramento e conserva??o de ?reas preservadas, sobretudo em ambientes sob press?o antr?pica e de condi??es ambientais extremas como o semi?rido. / The spatial and temporal distribution of the population reflects the adjustment of their biological characteristics to environmental conditions and biotic interactions as adaptive and phylogenetic precursors elements. The habitat?s heterogeneity and alternating seasons tend to cause patterns of activity of organisms and species diversity. However, these seasonal and spatial patterns in butterfly communities in dry environments are not yet clear. We studied a community of frugivorous butterflies in ESEC Serid?, in northeastern Brazil, aiming to characterize the guild in semiarid and check the relative contribution of climate and vegetation variables on its composition, diversity and phenofaunistic. The butterflies were sampled monthly during one year, and the distribution of species was associated with structural characteristics of three vegetation types (eg. richness and abundance of tree and shrub species, canopy cover, herbaceous cover, litter) and climatological data (temperature, rainfall and humidity). We captured 9580 individuals of 16 species of butterflies belonging to four subfamilies (Biblidinae, Charaxinae, Nymphalinae and Satyrinae). The richness, abundance and diversity varied in different scales, especially in time, being higher in the rainy season, while the ?-diversity and turnover was higher in the dry. The distribution of species mainly followed the changes in humidity, rainfall and vegetation phenology, with no defined boundaries between habitats. The flight period was shared within subfamilies, which should have distinct response to environmental stimuli, as well as respond to the phenology of host plants and have different reproductive strategies. There is even evidence of physiological and behavioral adaptations as seasonal reproduction and aestivation. So there was environmental control over the distribution and diversity of species, with the key role climate Association and vegetation structure in the community of differentiation in the seasons, and the availability and quality of resources on the variation of species abundance in small scales. These results may support the biomonitoring and conservation preserved areas, particularly in environments under human pressure and extreme environmental conditions such as semi-arid.

Made available in DSpace on 2014-12-17T14:55:54Z (GMT). No. of bitstreams: 1 LeonardoRLT_DISSERT.pdf: 5002159 bytes, checksum: 32ece88357ca34efc1622b6457cc10f9 (MD5) Previous issue date: 2011-12-19 / In this work is proposed an indirect approach to the DualMode Adaptive Robust Controller (DMARC), combining the typicals transient and robustness properties of Variable Structure Systems, more specifically of Variable Structure Model Reference Adaptive Controller (VS-MRAC), with a smooth control signal in steady-state, typical of conventional Adaptive Controllers, as Model Reference Adaptive Controller (MRAC). The goal is to provide a more intuitive controller design, based on physical plant parameters, as resistances, inertia moments, capacitances, etc. Furthermore, with the objective to follow the evolutionary line of direct controllers, it will be proposed an indirect version for the Binary Model Reference Adaptive Controller (B-MRAC), that was the first controller attemptting to act as MRAC as well as VS-MRAC, depending on a pre-defined fixed parameter / Nesse trabalho ? proposta uma abordagem indireta para o Controlador em Modo Dual Adaptativo Robusto (DMARC), o qual une as caracter?sticas transit?rias e de robustez t?picas dos Sistemas a Estrutura Vari?vel, mais especificamente do Controlador Adaptativo por Modelo de Refer?ncia e Estrutura Vari?vel (VS-MRAC), com um sinal de controle suave em regime permanente, t?pico dos Controladores Adaptativos convencionais, como o Controlador Adaptativo por Modelo de Refer?ncia (MRAC). O objetivo ? proporcionar uma maneira mais intuitiva de realizar o projeto do controlador, baseado nos par?metros f?sicos da planta, tais como: resist?ncia, momento de in?rcia, capacit?ncia, dentre outros. Adicionalmente, com a finalidade de seguir a linha evolutiva dos controladores diretos, ser? proposta uma vers?o indireta para o Controlador Adaptativo Bin?rio por Modelo de Refer?ncia (B-MRAC), o qual foi precursor na tentativa de atuar tanto como MRAC quanto como VS-MRAC, a depender de um par?metro fixo pr?-definido

Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2017-02-20T23:46:29Z No. of bitstreams: 1 MarceloGomesDeLira_DISSERT.pdf: 3968047 bytes, checksum: 2bf3be429b4d8efe2bcb03004e8047ef (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2017-03-02T22:34:53Z (GMT) No. of bitstreams: 1 MarceloGomesDeLira_DISSERT.pdf: 3968047 bytes, checksum: 2bf3be429b4d8efe2bcb03004e8047ef (MD5) / Made available in DSpace on 2017-03-02T22:34:54Z (GMT). No. of bitstreams: 1 MarceloGomesDeLira_DISSERT.pdf: 3968047 bytes, checksum: 2bf3be429b4d8efe2bcb03004e8047ef (MD5) Previous issue date: 2016-10-27 / A pesca oce?nica gera alimento, emprego e renda e se mostra importante em fun??o da proximidade do Brasil das rotas migrat?rias dos atuns e afins. Desta forma, estudos que relacionem a distribui??o da abund?ncia e estrutura populacional dos recursos pesqueiros com as vari?veis ambientais e como essas rela??es influenciam na distribui??o espa?o-temporal, assim como um melhor entendimento da din?mica e composi??o das capturas da frota que opera com espinhel no Atl?ntico, s?o essenciais para o estabelecimento de medidas que visem ? explora??o sustent?vel desses recursos. Foram analisados os dados de desembarques da frota sediada no Rio Grande do Norte (RN), principal exportador brasileiro de atuns e afins, durante o per?odo de 2006 a 2016. Cerca de 80% das capturas em peso foram de Thunnus albacares, Thunnus obesus, Xiphias gladius e Prionace glauca. A remunera??o da tripula??o, combust?vel, isca e material de pesca representaram 65% dos custos de produ??o. O RN exportou aproximadamente 77% de T. albacares fresco e 26% congelado, 92% de T. obesus fresco e 90% congelado e 55% de X. gladius fresco e 95% congelados. Ainda foi analisada a distribui??o espa?o temporal de T. albacares, uma das principais esp?cies capturadas pela frota espinheleira do RN, e suas rela??es com as caracter?sticas oceanogr?ficas das ?guas do Oceano Atl?ntico. Para este estudo foram utilizados dados de captura da frota espinheleira sediada no Estado do Rio Grande do Norte (Nordeste do Brasil), bem como dados de temperatura da superf?cie do mar (TSM), de clorofila-a (Chl-a), da ?rea compreendida entre 42,2? e 24,8? W e 5,9? S e 8,8? N, al?m de dados relativos ao ciclo lunar para o per?odo estudado. A metodologia empregada para modelar o efeito das vari?veis sobre a captura por unidade de esfor?o (CPUE) e o comprimento dos indiv?duos capturados foi o m?todo Modelos Lineares Generalizados (GLM). Ao total foram analisados 10.350 exemplares, que corresponderam a 482,95 t, capturados entre dezembro de 2007 e agosto de 2015. Os resultados obtidos indicam que a distribui??o, abund?ncia e a estrutura de comprimento de T. albacares est?o fortemente relacionadas com vari?veis ambientais (fases da lua, TSM e Chl-a), temporais (trimestre e ano) e espaciais (latitude e longitude) e que a baixa propor??o de adultos nas capturas totais de T. albacares, indica a necessidade de ado??o de medidas de administra??o pesqueira, visando ? conserva??o deste estoque.

Submitted by Celso Magalhaes (celsomagalhaes@ufrrj.br) on 2017-06-07T17:24:31Z No. of bitstreams: 1 2015 - Thiago Bernardo Pedro.pdf: 895954 bytes, checksum: 51cf79437e4ec796c2634cdc0a4b0498 (MD5) / Made available in DSpace on 2017-06-07T17:24:32Z (GMT). No. of bitstreams: 1 2015 - Thiago Bernardo Pedro.pdf: 895954 bytes, checksum: 51cf79437e4ec796c2634cdc0a4b0498 (MD5) Previous issue date: 2015-02-23 / Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico - CNPq / This study evaluates the influence of climatic variables on the occurrence distribution of Amblyomma sculptum adult ticks in four sample areas in Serop?dica and Mangaratiba, two municipalities in Rio de Janeiro Metropolitan mesoregion. The data used is relative to tick sampling between the spring of 2008 and the winter of 2012. The climatic variables included in the study were mean temperature, relative humidity and rainfall, in the day of sampling and in the 15 days prior to each sampling. For the statistical analysis, four types of generalized linear models were used: Poisson, Negative Binomial, Quasi Poisson (?2) and Zero Inflated Poisson (ZIP). A total of 574 ticks were found, most of them in the autumn. The bivariate analysis between each one of the independent variables and the response variable, tick count, showed seven variables that were significant at least in two types of models (being ZIP one of them): temperature in the day before sampling, temperature between the 4th and 6th days prior to sampling, temperature between the 11th and 15th days prior, humidity in the day before sampling, humidity in 5th day before, humidity between the 9th and 12th days prior and rainfall in the 12th day prior to sampling. These variables were combined in the multivariate analysis, therewith, nine models were fitted. Analyzing the prevalence ratio (PR), Akaike Information Criterion (AIC), mean square of residuals (MSR) and correlation between expected Y and observed Y (Corr), the best model was chosen, with the following variables (PR [CI 90%]): temperature between the 11th and 15th days prior to sampling (1,06 [1,01; 1,11]), humidity in the day before (1,04 [1,02; 1,05]) and rainfall in the 12th day prior to sampling (0,97 [0,94; 0,99]). Regarding the fitted models, it was possible to notice that the most satisfactory parameters were presented by ZIP models, in which the MSR values were the lowest and Corr values were the highest. The bivariate analyzes performed as of ZIP models contrasted the fact that temperature acts as a protection factor for the occurrence of A. sculptum adult ticks in the day of sampling and in the two days before, but it acts as a risk factor form the 3rd to the 15thday before. Humidity and rainfall act as protection factors for tick occurrence as from the 3rd and the 5th day prior to sampling, respectively. In the days closer to sampling, these two latter variables did not show a definite conduct of risk or protection with respect to the studied tick occurrence. Within this context, we conclude that understanding the parameters responsible for controlling the life cycle of A. sculptum is essential to generate risk models of disease transmission / O presente estudo avalia a influ?ncia de vari?veis clim?ticas sob a distribui??o de ocorr?ncia de carrapatos Amblyomma sculptum adultos em quatro ?reas amostrais nos munic?pios de Serop?dica e Mangaratiba, na mesorregi?o Metropolitana do Rio de Janeiro. Foram utilizados dados referentes a coletas de carrapatos realizadas entre a primavera de 2008 e o inverno de 2012. As vari?veis clim?ticas consideradas foram temperatura m?dia, umidade relativa do ar e volume de precipita??o, no dia das coletas e nos 15 dias anteriores a cada coleta. Para a an?lise estat?stica, foram utilizados quatro tipos de modelos de regress?o lineares generalizados: Poisson, Binomial Negativa, Extra Poisson (?2) e Poisson Inflacionada de Zeros. Foram coletados, ao todo, 574 carrapatos, sendo a maioria no outono. A an?lise bivariada entre cada uma das vari?veis explicativas e a vari?vel de desfecho, contagem de carrapatos, apresentou sete vari?veis significativas em pelo menos dois modelos (sendo um deles o ZIP): temperatura no dia anterior ? coleta, temperatura entre o 4? e o 6? dia anterior, temperatura entre o 11? e o 15? dia anterior, umidade no dia anterior ? coleta, umidade no 5? dia anterior, umidade entre o 9? e o 12? dia anterior e precipita??o no 12? dia anterior ? coleta. Essas vari?veis foram combinadas na an?lise multivariada, com isso, nove modelos foram ajustados. Atrav?s da an?lise da raz?o de preval?ncia (RP), Akaike Information Criterion (AIC), quadrado m?dio dos res?duos (QMR) e correla??o entre Y esperado e Y observado (Corr), foi escolhido o melhor modelo, com as seguintes vari?veis (RP [IC 90%]): temperatura entre o 11? e o 15? dia antes da coleta (1,06 [1,01; 1,11]), umidade no dia anterior ? coleta (1,04 [1,02; 1,05]) e precipita??o no 12? dia anterior (0,97 [0,94; 0,99]). Considerando-se os modelos ajustados, foi poss?vel observar que os par?metros mais satisfat?rios foram apresentados pelos modelos ZIP, em que os valores de QMR foram os mais baixos, e os valores de Corr, os mais elevados. As an?lises bivariadas realizadas a partir do modelo ZIP destacaram o fato de que a temperatura se apresenta como fator de prote??o para a ocorr?ncia de A. sculptum adultos no dia da coleta e nos dois dias anteriores, mas como fator de risco a partir do 3? dia anterior at? o 15?. J? umidade e precipita??o apresentam-se como fatores de prote??o para a ocorr?ncia de carrapatos a partir do 3? e do 5? dia anterior ? coleta, respectivamente, at? o 15?. Nos dias mais pr?ximos ? coleta, essas duas ?ltimas vari?veis n?o apresentam um comportamento definido de risco ou prote??o em rela??o ? ocorr?ncia dos carrapatos em estudo. Dentro desse contexto, conclui-se que entender os par?metros que controlam o ciclo de vida de A. sculptum ? essencial para a gera??o de modelos de risco de transmiss?o de doen?as

Submitted by Jadson Francisco de Jesus SILVA (jadson@uefs.br) on 2018-02-22T21:50:40Z No. of bitstreams: 1 PREDI??O DE PAR?METROS GEN?TICOS E INCREMENTO DA QUALIDADE DEFINITIVO.pdf: 1627949 bytes, checksum: 31c34b863f924737f87f81fa9f625403 (MD5) / Made available in DSpace on 2018-02-22T21:50:40Z (GMT). No. of bitstreams: 1 PREDI??O DE PAR?METROS GEN?TICOS E INCREMENTO DA QUALIDADE DEFINITIVO.pdf: 1627949 bytes, checksum: 31c34b863f924737f87f81fa9f625403 (MD5) Previous issue date: 2017-03-17 / The study aimed to estimate genetic parameters and genetic variability, as well as to determine the correlations among fruit variables associated with production and pulp quality attributes in pumpkin progenies. In 2013, the parameters and prediction of progeny gains allowed the ranking of the best individuals in 10 progenies from self pollination. In 2015 the divergence was determined, selecting genotypes for qualitative and quantitative characteristics, and studying the correlations among fruit variables associated with production and pulp quality attributes in 11 evaluated genotypes. In 2013, the REML/BLUP analysis allowed the ranking considering all variables evaluated indicating the individuals 10/1/1, 10/2/12 and 6/1/3 as more promising, being the first two of ?piriform? format, and the third of "moranga" format. In 2015, it was found great variability in the progenies evaluated and similarity among progenies C. moschata 1, C. moschata 3, C. moschata 4 and C. moschata 8. The promising progenies for fruit mass and ?-carotene were C. Moschata 4 and C. moschata 7 for advances aiming to increase of production and the nutritional characteristics of the fruit. Estimates of carotenoid contents generated by the Hue angle are only valid for contrasting genotypes due to the grouping of genotypes with carotenoid content four times higher than ?Jacarezinho? cultivar. The variables explained 98% of the variation in the basic variable in the path analysis and four variables can be used for direct selection aiming to increase of fruit mass. / O estudo objetivou obter estimativas de par?metros gen?ticos e de variabilidade gen?tica, bem como determinar as correla??es entre vari?veis do fruto associadas ? produ??o e atributos de qualidade da polpa em prog?nies de ab?bora. Em 2013, os par?metros e a predi??o de ganhos gen?ticos permitiram o ranqueamento dos melhores indiv?duos em 10 prog?nies provenientes de autofecunda??es. Em 2015 determinou-se a diverg?ncia, sendo feita a sele??o de gen?tipos para caracteres qualitativos e quantitativos, al?m de estudar as correla??es entre vari?veis do fruto associadas ? produ??o e atributos de qualidade da polpa em 11 gen?tipos avaliados. Em 2013, a an?lise via REML/BLUP possibilitou o ranqueamento considerando todas as vari?veis avaliadas indicando os indiv?duos 10/1/1, 10/2/12 e 6/1/3 como mais promissores, sendo os dois primeiros de formato ?piriforme? e o terceiro de formato ?moranga?. Em 2015, constatou-se grande variabilidade nas prog?nies avaliadas e similaridade entre as prog?nies C. moschata 1, C. moschata 3, C. moschata 4 e C. moschata 8. As prog?nies promissoras para massa do fruto e ?-caroteno foram C. moschata 4 e C. moschata 7 para avan?os visando aumento da produ??o e das caracter?sticas nutricionais do fruto. As estimativas dos teores de carotenoides geradas pelo ?ngulo Hue somente s?o v?lidas para gen?tipos contrastantes devido ao agrupamento de gen?tipos com teores de carotenoides quatro vezes maiores em rela??o a cultivar Jacarezinho. As vari?veis explicaram 98% da varia??o ocorrida na vari?vel b?sica na an?lise de trilha e quatro vari?veis podem ser utilizadas para a sele??o direta visando aumento da massa do fruto.

Submitted by Elba Lopes (elba.lopes@fecap.br) on 2016-06-24T18:39:47Z No. of bitstreams: 1 Tiago_Lopes_da_Silveira.pdf: 447998 bytes, checksum: 4db05a708030a8c7948e5852fb81c8a3 (MD5) / Made available in DSpace on 2016-06-24T18:39:47Z (GMT). No. of bitstreams: 1 Tiago_Lopes_da_Silveira.pdf: 447998 bytes, checksum: 4db05a708030a8c7948e5852fb81c8a3 (MD5) Previous issue date: 2016-01-26 / The aim of this study is to evaluate the cause and effect relationship between a set of macroeconomic variables suggested and the return on assets in the Brazilian stock market, employing multivariate VAR optics. The variables employed in the study were: I) the average monthly index of Sao Paulo Stock Exchange (Bovespa-closing); II) the average monthly index of shares of the New York Stock Exchange (Nyse-closing); III) the real exchange rate (Ptax rate); IV) the price of a barrel of oil on the international market (Brent); V) the short-term interest rate (Selic); VI) the prime rate of the USA (Fed). The study covered the period between January 2006 and December 2014. The study was conducted through four econometric tests: Granger causality test, Analysis of Decomposition of Variances (VDC); Unit Root test (Dickey and Fuller Increased test - ADF) and analysis of Impulse response Function (IRF). The test results revealed that Nyse, then the Selic and the Brent oil, among the selected variables, showed the best statistical results. / O intuito deste estudo ?? avaliar a rela????o de causa e efeito entre um conjunto de vari??veis macroecon??micas sugeridas e o retorno dos ativos no mercado acion??rio brasileiro, empregando a t??cnica multivariada VAR. As vari??veis empregadas no estudo foram: I) o ??ndice m??dio mensal de a????es da Bolsa de S??o Paulo (Ibovespa - fechamento); II) o ??ndice m??dio mensal de a????es da Bolsa de New York (Nyse - fechamento); III) a taxa de c??mbio real (Ptax); IV) o pre??o do barril de petr??leo no mercado internacional (Brent); V) a taxa de juros de curto prazo (Selic) e VI) a taxa b??sica de juros dos EUA (Fed). O estudo abrangeu o per??odo entre janeiro de 2006 e dezembro de 2014. O estudo foi realizado por meio de quatro testes econom??tricos: Teste de Causalidade de Granger, An??lise das Decomposi????es das Vari??ncias (VDC); Teste de Raiz Unit??ria (Teste de Dickey e Fuller Aumentado - ADF) e An??lise das Fun????es de Resposta a Impulso (IRF). Os resultados dos testes revelaram que a Nyse, seguida da Selic e do petr??leo do tipo Brent, dentre as vari??veis selecionadas, foram as que apresentaram os melhores resultados estat??sticos.