Submitted by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-01-05T17:56:15Z No. of bitstreams: 2 luiz_david_oliveira_rabelo.pdf: 5072190 bytes, checksum: 9bb99d128c67520558b81b221c771ba9 (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-01-05T17:56:44Z (GMT) No. of bitstreams: 2 luiz_david_oliveira_rabelo.pdf: 5072190 bytes, checksum: 9bb99d128c67520558b81b221c771ba9 (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-01-05T17:57:03Z (GMT) No. of bitstreams: 2 luiz_david_oliveira_rabelo.pdf: 5072190 bytes, checksum: 9bb99d128c67520558b81b221c771ba9 (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) / Made available in DSpace on 2015-01-05T17:57:05Z (GMT). No. of bitstreams: 2 luiz_david_oliveira_rabelo.pdf: 5072190 bytes, checksum: 9bb99d128c67520558b81b221c771ba9 (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) Previous issue date: 2014 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES) / O trabalho teve como objetivo propor uma metodologia de estratifica??o de povoamentos florestais, testar o modelo de Clutter utilizando outras vari?veis independentes, empregar o modelo proposto por Oliveira em 2009 e propor uma alternativa para realiza??o de prognose do crescimento e produ??o de povoamentos com uma ou duas medi??es do invent?rio florestal. O estudo foi realizado com informa??es de parcelas permanentes de invent?rios florestais cont?nuos, conduzidos em povoamentos de clones de Eucalipto localizados no Estado de Minas Gerais. A defini??o dos estratos foi realizada pelo m?todo de minera??o de dados k-means, a partir dos par?metros de equa??es lineares simples de cada talh?o para as vari?veis de povoamento em fun??o da idade. O ?ndice de local para a classifica??o da capacidade produtiva foi calculado para cada talh?o e a sua determina??o foi feita utilizando o modelo de Schumacher. A classifica??o de talh?es com uma (36 meses) ou duas medi??es, (48 meses) foi realizada com o c?lculo da dist?ncia euclidiana para as vari?veis de povoamento do talh?o com rela??o ? m?dia do estrato definido pelo k-means. Foi ajustado para os dados de um mesmo conjunto de talh?es o modelo de Clutter e algumas alternativas com a substitui??o de vari?veis explicativas, bem como o modelo proposto por Oliveira. O desempenho dos modelos foi avaliado pela raiz quadrada do erro m?dio, bias %, AIC, BIC e gr?ficos com a dispers?o dos res?duos. Com o intuito de verificar se o m?todo k means foi eficiente na forma??o de estratos, procedeu se com o teste White para o ajuste dos modelos de ?rea basal e volume. O modelo de Clutter apresentou estimativas volum?tricas precisas com a estratifica??o usando o m?todo k-means. N?o verificou-se a viola??o de homocedasticidade de vari?ncias para a maioria dos estratos gerados pelo m?todo k-means. A altura total m?dia explicou com melhor desempenho a varia??o volum?trica do povoamento. A classifica??o de talh?es florestais com a dist?ncia euclidiana entre as vari?veis de povoamento apresentou resultados diferentes quanto a idade de refer?ncia. As estimativas projetadas com a classifica??o aos 48 meses obtiveram resultados mais consistentes do que as projetadas com 36 meses. / Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Ci?ncia Florestal, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2014. / ABSTRACT The work had as object to propose a forest populations stratification methodology, to test the Clutter model using other independent variables, to employ the model proposed by Oliveira in 2009 and to propose an alternative to the performance of growth prognosis and populations productions with one or two forest inventory measurements. The study was performed with permanent parcels of continuous forest inventories, conducted in Eucalyptus clones populations located in Minas Gerais. The stratums definition was performed using the method of data mining k-means, from the simple linear equations parameters of each plot for the population variables according to the age. The local index to classify the productive capability was calculated for each plot and its determination was done using the Schumacher model. The plot classification with one (36 months) or two measurements (48 months) was made with the calculus of the Euclidian distance for the plot population variables in relation to the stratum average determined by the k-mean method. The Clutter model was adjusted for the data of the same group of plots and some alternatives with the substitution of instructive variables, and also with the model proposed by Oliveira. The models development was evaluated by the square root of the average error, bias %, AIC, BIC and graphics with residues dispersion. Intending to verify if the k-means method was efficient in the stratums formation, they continued to the White test for the adjustment of the basal area and volume models. The Clutter model has presented precise volumetric estimates with the stratification using the k-means method. Homoscedasticity variances violation was not shown for the majority of the stratums generated by the k?-means method. The average total height has better explained the population volumetric variation. The forest plots classification with the Euclidian distance among the population variables has shown different results in relation to the reference age. The estimates projected with the classification at 48 months have gotten more consistent results than the ones projected at 36 months.

?rea de concentra??o: Conserva??o e restaura??o de ecossistemas florestais . / Submitted by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-04-17T17:05:56Z No. of bitstreams: 2 andre_r_c_gianotti.pdf: 1027911 bytes, checksum: 2e811bd8a0fe88c670ea38ebdbe1ee99 (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-04-17T17:26:52Z (GMT) No. of bitstreams: 2 andre_r_c_gianotti.pdf: 1027911 bytes, checksum: 2e811bd8a0fe88c670ea38ebdbe1ee99 (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) / Made available in DSpace on 2015-04-17T17:26:53Z (GMT). No. of bitstreams: 2 andre_r_c_gianotti.pdf: 1027911 bytes, checksum: 2e811bd8a0fe88c670ea38ebdbe1ee99 (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) Previous issue date: 2012 / Funda??o de Amparo ? Pesquisa do estado de Minas Gerais (FAPEMIG) / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (Capes) / O clima e o solo tem uma estreita rela??o com a vegeta??o de uma determinada localidade. Visando entender melhor essa din?mica na ambiente do cerrado, este estudo teve como objetivo estudar na regi?o de Diamantina a intera??o dos elementos clim?ticos entre fitofisionomias de Campo Rupestre e Cerrado Rupestre e tamb?m relacionar as caracter?sticas ed?ficas e flor?sticas com o clima. Para an?lise flor?stica foram alocadas, nos dois ambientes de estudo, 10 parcelas cont?guas de 20x50m, totalizando uma amostragem de 10.000 m?. Para os elementos clim?ticos foram utilizados, para caracterizar os ambientes de cerrado, a temperatura, a umidade relativa do ar, a press?o real e de satura??o do vapor de ?gua, o d?ficit de press?o do vapor do ar, a velocidade do vento, a precipita??o, a irradi?ncia solar global, e a amplitude t?rmica. Utilizaram-se para tal os dados obtidos em duas esta??es meteorol?gicas autom?ticas localizadas pr?ximo aos dois ambientes. Empregou-se o Teste-T para analisar a possibilidade de diferen?a entre m?dias das vari?veis clim?ticas nos dois ambientes, que atribuir?o distribui??o normal. Da mesma forma, aplicou-se o teste n?o param?trico Kruskal-Wallis para as vari?veis clim?ticas que n?o conferir?o normalidade nos dois ambientes em estudo. Optou-se ap?s essas an?lises, pelo uso da an?lise multivariada, para melhor compreens?o da distin??o microclim?tica desses dois ambientes. A an?lise can?nica dos componentes principais (PCA) distinguiu o grupo do Campo Rupestre e do Cerrado Rupestre, utilizando-se das mesmas vari?veis clim?ticas que obtiveram signific?ncia no Teste-T e no teste Kruskal-Wallis. O primeiro eixo do componente principal explanou a maior vari?ncia (67,8%) na qual o ambiente de Campo Rupestre se distingue do Cerrado Rupestre pela PCA principalmente em maior velocidade do vento, menor umidade relativa m?xima, menor press?o real e de satura??o do vapor de ?gua e menor temperatura m?xima e m?dia e menor amplitude t?rmica. A express?o da vegeta??o se d? em virtude da combina??o de fatores como o n?vel de rochosidade e profundidade do solo e clim?ticos, haja vista que as esp?cies vegetais s?o diferentes nesses ambientes: apenas sete das esp?cies se distribuem nos dois locais de estudo. Dessa forma, o Cerrado Rupestre apresenta alguns elementos da flora tamb?m presentes no Campo Rupestre, destacando-se o estrato subarbustivo-herb?cio. Para a segunda pesquisa, os indiv?duos do ambiente de Campo Rupestre foram avaliados quanto ? frequ?ncia, domin?ncia e densidade. Realizou-se a correla??o da densidade das esp?cies desse ambiente com 9 vari?veis qu?micas e f?sicas do solo por meio da an?lise de correspond?ncia can?nica (ACC). A maior abund?ncia de indiv?duos (I) foi representada pela esp?cie L. pohlii e foi verificada nas parcelas 6 (com 255 I), 7 (173 I), 8 (189 I), 9 (159 I) e a parcela 1 com 151 I. Verificaram-se nestas parcelas caracter?sticas flor?sticas e do solo semelhantes, resultando em uma proximidade espacial quando representadas nos diagramas da ACC. A esp?cie Lychnophora pohlii demonstrou capacidade de exist?ncia com maior abund?ncia em microambientes pedol?gicos favor?veis ao estabelecimento da esp?cie como estrat?gia de adapta??o ?s perturba??es ambientais. Essa separa??o se fez com base principalmente nos valores mais elevados de f?sforo remanescente, satura??o por bases, pH e areia grossa e, por outro lado, os menores valores de H+Al, mat?ria org?nica e argila. / Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Ci?ncia Florestal, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2012. / ABSTRACT The climate and soil has a close relationship with the vegetation of a particular locality. In order to better understand this dynamic environment of the cerrado, this study aimed to study the region of Diamantina climatic elements of the interaction between physiognomies of Savannah Rupestrian and Field Rupestrian and also relate the soil characteristics and species composition with the weather. For floristic analysis were allocated, in the two study environments, 10 contiguous parcels of 20x50 m, with a total sample of 10,000 m?. Soil sampling was done with the collection of 6 simple samples, from 0 to 20cm, forming a composite sample, the ten plots of each environment studied. The level of rockiness was defined as the proportion rock touched on the environment using the scale-Braun Blanquet studied in both environments.The climatic elements used to characterize the Savannah environments were: temperature, relative humidity, the actual pressure and saturated vapor water, the deficit pressure vapor air, wind speed, precipitation, global solar irradiance and temperature range.Were used for such data from the two stations located close to the two automatic environments. We used the t-test to examine the possibility of differences between means of climate variables in the two environments that were normally distributed. Likewise, we applied the nonparametric Kruskal-Wallis test for climatic variables not identified in both normal environments under study. It was decided, after these analyzes, the use of multivariate analysis to better understand the distinction these two climatic environments. The canonical analysis of principal components (PCA) distinguished the group's Field Rupestrian and the Savannah Rupestrian, using the same climate variables that achieved significance in the T-test and Kruskal-Wallis test. The first axis of principal component explain the greatest variance (67.8%) in which the environment Field Rupestrian is distinguished from the Savannah Rupestrian by PCA mainly at higher wind speeds, lower humidity relative maximum, lower actual pressure and saturation vapor water and lower temperature maximum and average and lower temperature range. The expression of the vegetation is due to the combination of climatic and edaphic factors, given the fact that the species are different in these environments. In this way, Savannah rupestrian flora includes some elements also present in the Field rupestrian, especially in the stratum subshrubherb?cio. For the second study, individuals in the environment Field rupestrian were evaluated for frequency, dominance and density. Went conducted the correlation between the density of this species with nine chemical and physical variables of the soil through canonical correspondence analysis (CCA). The greater abundance of individuals (I) of the species L. pohlii was observed in plots 06 (with 255 I), 7 (173 I), 8 (189 I), 9 (I 159) and 1 (151 I). As seen in these parcels characteristics floristic and similar soil, resulting in a spatial proximity when represented in the diagrams of the ACC. The specie Lychnophora pohlii demonstrated the ability of existence with greater abundance in soil microenvironments favorable to the establishment of the specie as a strategy to adapt to environmental perturbations. This separation was made based mainly on higher values of phosphorus balance, saturation, pH and coarse sand, and on the other hand the lowest values of H + Al, organic matter and clay.

Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2016-04-15T20:28:21Z No. of bitstreams: 1 LarynneDantasDeSenna_DISSERT.pdf: 2775430 bytes, checksum: 1f765d0818e89af5941a1275fe961a99 (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2016-04-19T23:40:44Z (GMT) No. of bitstreams: 1 LarynneDantasDeSenna_DISSERT.pdf: 2775430 bytes, checksum: 1f765d0818e89af5941a1275fe961a99 (MD5) / Made available in DSpace on 2016-04-19T23:40:44Z (GMT). No. of bitstreams: 1 LarynneDantasDeSenna_DISSERT.pdf: 2775430 bytes, checksum: 1f765d0818e89af5941a1275fe961a99 (MD5) Previous issue date: 2015-06-02 / P ara contribuir no desempenho das pol?ticas e estrat?gias formuladas por comit?s de bacia hidrogr?fica , ?ndices v?m sendo criados na expectativa de expressar as m?ltiplas dimens?es dos recursos h?dricos em u ma forma facilmente interpret?vel. O uso do ?ndice de Pobreza H?drica (WPI) est? se difundindo mundialmente, sendo o mesmo formado pela combina??o dos sub?ndices Recurso, Acesso, Capacidade, Uso e Ambiente. A lgumas cr?ticas quanto ? f orma??o do WPI foram surgindo , de ntre elas destaca - s e a atribui??o de pesos dos sub ?ndices, feita por um processo arbitr?rio atribuindo subjetividade ao crit?rio de sele??o. Ao envolver an?lise estat?stica, quando se considera as caracter?sticas das vari?veis geradas pe la An?lise de Componentes Principais (ACP), verifica - se que a mesma ? capaz de solucionar esse problema . O objetivo deste trabalho ? comparar os resultados do WPI original com o ?ndice gerado atrav?s da An?lise de Componentes Principais (ACP), par a a indic a??o dos pesos dos sub ?ndices aplic?veis na bacia hidrogr?fica do Rio Serid? (RN e PB) . Conclui - se que o uso da An?lise de Componentes Principais na atribui??o do s pesos do ?ndice de Pobreza H?drica permitiu identificar que os sub - ?ndices Recurso, Acesso e Ambiente s?o os mais representativos para a bacia hidrogr?fica do Rio Serid? , e que este novo ?ndice, o WPI?, apresentou faixas de valores mais abra ngentes, permitindo identificar mais facilmente as disparidades entre os munic?pios. Al?m disso, a avalia? ? o dos sub ?ndices na ?rea de estudo tem grande potencial de informar ao tomador de decis?o na gest?o dos recursos h?dricos, as localidades mais cr?ticas e que merecem maiores investimentos nos aspectos analisados, j? que o ?ndice em si n?o permite captar essa informa??o. / To contribute in the performance of policies and strategies formulated by development agencies, indexes have been created in anticipation of expressing the multiple dimensions of water resources in an easily interpretable form. Use of Hydro Poverty Index ( WPI) is spreading worldwide , with the same formed by the combination of sub - indices Resource, access, capacity , use and environment. S ome critics a s to its formation have emerged, a mong them stands out the allo cation of weights of sub - indexes , made by an arbitrary process attributing subjectivity to the selection criteria. By involving statistical analysis, when considering the characteristics of the variables generated by the Principal Component Analysis (PCA), it turns out that it is able to solve this problem. The objective of this study is to compare the results of the original WPI with content generated by Principal Com ponent Analysis (PCA) for the indicati on of the weights of sub - indec es applicable in the Serid? River hydrographic Basin . We conclude that the use of Principal Component Analysis in the allocation of weights of Water Poverty Index has identified the sub - indices Resources, Access and Environment are the most representative for the river basin Serid? , and that this new index, WPI' , presented the most comprehensive ranges of values , allowing more easily identify disparities among municipalities. In addition, t he evaluation of the sub - indec es in the study area has great potential to inform the decision - maker in the management of water resources, the most critical locations and deserve greater investments in the aspects analyzed, as the index itself can not cap ture this information.

Made available in DSpace on 2016-04-28T20:16:21Z (GMT). No. of bitstreams: 1 2006-Vania Maria de Oliveira.pdf: 2669805 bytes, checksum: 9362ac846f0f7472e7cd01aff374182f (MD5) Previous issue date: 2006-02-22 / The objectives of this study were to determine the prevalence, to identify the associated factors, to analyze the historical tendency and the distribution of the bovine tuberculosis (BT) in 209 herds in the State of Rio de Janeiro, corresponding to the period from 1959 to 1989. For such, a epidemiological retrospective study was performed, analyzing the data of the demand of the Laboratory of IPEACS and Embrapa - PNPSA. The data bank was elaborated based on BT results, production indicators, management and other information referring to the farms and to the herds. The association among the presence of BT and the variables as: herd s aptitude, animal density, productivity, suckling system, suckling period, veterinary assistance, size of the herds, milk production, criterion for purchase, handling of manure, newborn management, mortality of calves. The region of the State were analyzed by the c2 test with correction of Yates, when necessary. In the bivariate analysis, the variables herd s aptitude, animal density, productivity, suckling system, suckling period, veterinary assistance had values of p ? 0,20, the multivariate analysis was submitted to generalized linear model. The historical tendency was evaluated by linear regression. The prevalence rate of BT on farms was 49,8% and it was presented in seven of the eight regions of the State, with significant differences (p = 0,03). The model that better explained the occurrence of BT in the herds included the variables: density, herd s aptitude, productivity, suckling system, suckling period as well as the interactions density x productivity, density x suckling system and productivity x suckling period. The increasing historical tendency of BT, with accentuated annual variations, could be due to the different motivations to the search of diagnostic. The economical organization of the production system was determinat in the occurrence of BT it could be evidenced by the variables that better explained its presence and its distribution in the analyzed population. / Os objetivos deste estudo foram determinar a preval?ncia, identificar os fatores associados, analisar a tend?ncia hist?rica e a distribui??o da tuberculose bovina (TB) em rebanhos, nos dados da demanda laboratorial do antigo Instituto de Pesquisa Agropecu?ria do Centro Sul (IPEACS) e da Empresa Brasileira de Pesquisa Agropecu?ria - Programa Nacional de Pesquisa em Sanidade Animal (Embrapa - PNPSA), do Estado do Rio de Janeiro. Para tal, um banco de dados foi elaborado com os resultados da tuberculiniza??o, indicadores de produ??o, de manejo e demais informa??es dos rebanhos de 209 propriedades rurais, referentes ao per?odo de 1959 a 1989. A associa??o entre a presen?a de TB e as vari?veis: aptid?o do rebanho, densidade animal, produtividade, sistema de aleitamento, per?odo, assist?ncia veterin?ria, tamanho do rebanho, produ??o de leite, crit?rio para compra, manejo de esterco, cuidados com rec?m-nascidos, mortalidade de bezerros e regi?o foi inicialmente analisada pelo teste de c2. Na an?lise bivariada, as vari?veis aptid?o do rebanho, densidade animal, produtividade, sistema de aleitamento, per?odo, assist?ncia veterin?ria apresentaram valores de p ? 0,20 e foram submetidas a an?lise multivariada por meio de modelo linear generalizado. A reta de tend?ncia hist?rica foi obtida por regress?o linear. A taxa de preval?ncia da TB nos rebanhos foi de 49,8% e esteve presente em sete das oito regi?es do Estado, com diferen?a significativa (p = 0,03). O modelo que melhor explicou a ocorr?ncia de TB nos rebanhos incluiu as vari?veis: densidade, aptid?o, produtividade, aleitamento e per?odo e as intera??es densidade x produtividade, densidade x aleitamento e produtividade x per?odo. A tend?ncia hist?rica crescente, com acentuadas varia??es anuais, pode ser, em parte, explicada pelas diferentes motiva??es para a busca do diagn?stico. A import?ncia da organiza??o econ?mica da produ??o pecu?ria na ocorr?ncia da TB, pode ser evidenciada pelas vari?veis que melhor explicaram sua presen?a e sua distribui??o na popula??o estudada.

Submitted by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-12-17T17:32:13Z No. of bitstreams: 2 ricardo_costa_sousa.pdf: 978334 bytes, checksum: 95ce2c281d2839fc0eb4f11a7f66ac37 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-12-17T17:32:39Z (GMT) No. of bitstreams: 2 ricardo_costa_sousa.pdf: 978334 bytes, checksum: 95ce2c281d2839fc0eb4f11a7f66ac37 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) / Made available in DSpace on 2015-12-17T17:32:39Z (GMT). No. of bitstreams: 2 ricardo_costa_sousa.pdf: 978334 bytes, checksum: 95ce2c281d2839fc0eb4f11a7f66ac37 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Previous issue date: 2011 / Funda??o de Amparo ? Pesquisa do estado de Minas Gerais (FAPEMIG) / Foi desenvolvida uma Prova de Ganho em Peso (PGP) a pasto com animais da ra?a Guzer? na fazenda Meleiro no munic?pio Curvelo ? MG, oficializada pela Associa??o Brasileira dos Criadores de Zebu (ABCZ). Foram avaliados 45 machos da ra?a Guzer? rec?m-desmamados, com peso e idade iniciais m?dios e desvio padr?o de 219,9 ? 38,05 kg e 325,8 ? 28,0 dias, respectivamente. Na prova os animais consumiram pastagens de Brachiaria brizantha e suplementa??o m?ltipla, receberam tratamento sanit?rio e foram mantidos em condi??es uniformes de manejo por um per?odo de 294 dias. As avalia??es aconteceram a cada 56 dias. A partir desta PGP buscou-se avaliar uma fun??o n?o-linear que melhor descrevesse a curva de crescimento dos animais, estimar o desenvolvimento relativo da ?rea de olho de lombo, medida por ultrassonografia, da circunfer?ncia escrotal e de medidas morfom?tricas em rela??o ao peso vivo de bovinos da ra?a Guzer? atrav?s do estudo do crescimento alom?trico; avaliou-se tamb?m um conjunto de caracter?sticas, por meio de an?lise de componentes principais, visando identificar as caracter?sticas que representam a maior parte da varia??o fenot?pica. As caracter?sticas avaliadas por componentes principais foram: peso aos 205 dias (P205), peso aos 365 dias (P365), peso aos 550 dias (P55), ganho m?dio di?rio (GMD), circunfer?ncia escrotal (CE), altura na garupa (HG), comprimento corporal (CC), circunfer?ncia tor?cica (CT), ?rea de olho de lombo (AOL), estrutura (E), precocidade (P) e musculosidade (M). No presente estudo, a fun??o de Von Bertalanffy foi a que melhor se ajustou para descrever o crescimento dos machos da ra?a Guzer? na PGP a pasto, j? o crescimento alom?trico apresentou-se heterog?nico negativo para todas as caracter?sticas avaliadas em rela??o ao peso vivo. Quanto a an?lise de componentes principais os tr?s primeiros componentes principais explicaram 74,51% da varia??o total dos dados, sendo estes associados aos maiores autovalores e retendo assim, maior vari?ncia dos dados. As caracter?sticas que tiveram maior participa??o nestes componentes foram P205, P e M. / Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Zootecnia, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2011. / ABSTRACT It was developed in a performance test (PGP) to grazing animals on the farm Guzera Meleiro Curvelo the municipality - MG, officiated by the Brazilian Association of Zebu Breeders (ABCZ). We evaluated 45 male weanling Guzer?, with initial average weight and age and standard deviation of 219.9 ? 38.05 kg and 325.8 ? 28.0 days, respectively. At trial, the animals were grazing Brachiaria brizantha and supplementation multiple received sanitary treatment and were maintained under uniform management for a period of 294 days. The evaluations took place every 56 days. From this PGP sought to evaluate a nonlinear function that best describe the growth curve of animals, estimate the relative development of the loin eye area measured by ultrasound, scrotal circumference and morphometric measurements in relation to body weight bovine Guzera through the study of allometric growth, was also evaluated a set of features through principal component analysis, to identify the characteristics that represent most of the phenotypic variation. The characteristics evaluated by principal components were: weight at 205 days (P205), weight at 365 days (P365), weight at 550 days (P550), average weight gain (ADG), scrotal circumference (SC), hip height (HG), body length (CC), thoracic circumference (TC), loin eye area (LEA), structure (E), precocity (P) and muscle (M). In this study, the Von Bertalanffy function was the best fit to describe the growth of males Guzera grazing on PGP, as the allometric growth presented heterogonic negative for all traits in relation to body weight. In this study, the Von Bertalanffy function was the best fit to describe the growth of males Guzera grazing on PGP, as the allometric growth presented heterogonic negative for all traits in relation to body weight. As for principal components analysis the first three principal components explained 74.51% of the total variation of data, which are associated with larger eigenvalues and thus retaining, greater data variance. The characters with the highest participation in these components were P205, P and M.

Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2017-11-01T21:32:48Z No. of bitstreams: 1 CamiloDeLelisMedeirosDeMorais_DISSERT.pdf: 7776134 bytes, checksum: df3df5fbaaa77afcd7e4306d1584bec9 (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2017-11-07T23:52:52Z (GMT) No. of bitstreams: 1 CamiloDeLelisMedeirosDeMorais_DISSERT.pdf: 7776134 bytes, checksum: df3df5fbaaa77afcd7e4306d1584bec9 (MD5) / Made available in DSpace on 2017-11-07T23:52:52Z (GMT). No. of bitstreams: 1 CamiloDeLelisMedeirosDeMorais_DISSERT.pdf: 7776134 bytes, checksum: df3df5fbaaa77afcd7e4306d1584bec9 (MD5) Previous issue date: 2017-09-29 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES) / Esta disserta??o consiste de um aporte te?rico sobre a constru??o de t?cnicas de classifica??o supervisionada para aplica??es em dados qu?micos multivariados. Para isso, t?cnicas quimiom?tricas baseadas em an?lise discriminante quadr?tica (QDA) e m?quinas de vetores suporte (SVM) foram constru?das em conjunto com an?lise de componentes principais (PCA), algoritmo de proje??es sucessivas (SPA) e algoritmo gen?tico (GA) para classifica??o supervisionada utilizando redu??o de dados e sele??o de vari?veis. Essas t?cnicas foram empregadas na an?lise de dados de primeira ordem, constitu?dos de espectros na regi?o do infravermelho m?dio com transformada de Fourier e reflect?ncia total atenuada (ATR-FTIR); espectros de massas obtidos por cromatografia l?quida com um detector por tempo de v?o (LC/TOF); e espectros de massas obtidos por desor??o/ioniza??o por laser de superf?cie acoplado a um detector por tempo de v?o (SELDI-TOF). Os dados de ATR-FTIR foram utilizados para diferenciar duas classes de fungos do g?nero Cryptococcus, enquanto que os dados de espectrometria de massas foram utilizados para identificar c?ncer de ov?rio e de pr?stata em soro sangu?neo. Al?m disso, novas t?cnicas de an?lise discriminante bidimensionais utilizando an?lise de componentes principais com an?lise discriminante linear (2D-PCA-LDA), an?lise discriminante quadr?tica (2D-PCA-QDA) e m?quinas de vetores suporte (2D-PCA-SVM) foram desenvolvidas para aplica??es em dados qu?micos de segunda ordem compostos por matrizes de excita??o-emiss?o (EEM) por fluoresc?ncia molecular em amostras simuladas e reais. Os resultados obtidos mostraram que as t?cnicas desenvolvidas tiveram alto desempenho classificat?rio tanto para os dados de primeira quanto de segunda ordem, com taxas de acerto, sensibilidade e especificidade atingindo valores entre 90 a 100%. Al?m disso, as t?cnicas bidimensionais desenvolvidas tiveram, no geral, desempenho superior do que os m?todos tradicionais de classifica??o multivariada utilizando dados desdobrados, o que mostra seu potencial para outras futuras aplica??es anal?ticas. / This dissertation is composed by a theoretical contribution about the development of supervised classification techniques for application using multivariate chemical data. For this, chemometric techniques based on quadratic discriminant analysis (QDA) and support vector machines (SVM) were built combined with principal component analysis (PCA), successive projections algorithm (SPA) and genetic algorithm (GA) for supervised classification using data reduction and feature selection. These techniques were employed in analyzing first-order data, composed by attenuated total reflectance Fourier transform infrared spectroscopy (ATRFTIR) and mass spectra obtained from liquid chromatography time of flight (LC/TOF) and surface-enhanced laser desorption/ionization time of flight (SELDI/TOF). ATR-FTIR data were used to differentiate two classes of fungus of Cryptococcus gene, whereas the mass spectra data was used to identify ovarian and prostate cancer in blood serum. In addition, new twodimensional discriminant analysis techniques based on principal component analysis linear discriminant analysis (2D-PCA-LDA), quadratic discriminant analysis (2D-PCA-QDA) and support vectors machine (2D-PCA-SVM) were developed for applications in second-order chemical data composed by excitation-emission matrices (EEM) molecular fluorescence of simulated and real samples. The results show that the developed techniques had better classification performance for both first and second-order data, with classification rates, sensitivity and specificity reaching values between 90 to 100%. Also, the developed twodimensional techniques had overall performance superior than traditional multivariate classification methods using unfolded data, showing its potential to other future analytical applications.

Made available in DSpace on 2016-04-04T18:31:30Z (GMT). No. of bitstreams: 1 Rodrigo de Araujo Pereira.pdf: 1366550 bytes, checksum: a0d4e8d1bb422646cca0f06e4eb9d7d9 (MD5) Previous issue date: 2011-02-21 / This research investigates the highly competitive market, increased demands from customers and the reduction of profit margins as factors that contextualize the current market scenario of the companies of mobile telephony sector in Brazil. To that end, uses of research at the Foundation for the Protection and Consumer Protection (PROCON) and the National Telecommunications Agency (ANATEL) to indicate that the cell phone companies are leaders in claims and fines that exceed the total value of $ 3 million. The research includes an analysis of these problems, focusing on the more damaging to the competitiveness of the market, i.e., expands on criteria directly related to the conservation and degeneration of the image of these companies, and analyzes what the key issues and motivators of complaints at the consumer protection agencies. It accepts the premise of a hypothetical solution, reducing the levels of fines in the mobile industry, basing this view on the method Analytic Hierarchy Process (AHP) The analysis results are ordered under the following criteria: "unauthorized charges," "Failure to comply", "quality service", "block", "delayed delivery" and "misleading propaganda". Under the sensitivity analysis, also show periodic variations in the relative importance of these criteria. Therefore, the appropriate amounts identified for each of the problems, the organizations mobile analyze each of these problems, identifying their causes. Therefore, this analysis of the causes wil viabilisate the development of operational plans aimed at the most efficient and effective the current juncture. / A presente pesquisa investiga a forte competitividade de mercado, o aumento das exig?ncias por parte dos clientes e a redu??o das margens de lucro como fatores que contextualizam o cen?rio de mercado atual das empresas do setor de telefonia m?vel no Brasil. Para tanto, lan?a m?o de pesquisas da Funda??o de Prote??o e Defesa do Consumidor (PROCON) e da Ag?ncia Nacional de Telecomunica??es (ANATEL), para apontar que as empresas de telefonia celular s?o l?deres em reclama??es e somam multas que ultrapassam o valor de R$ 3 milh?es. A pesquisa abarca uma an?lise destes problemas, enfocando os de maior prejudicialidade ? competitividade de mercado, ou seja, aprofunda-se em crit?rios diretamente ligados ? conserva??o e degenera??o da imagem destas empresas, bem como analisa quais os principais problemas e motivadores de reclama??es junto aos ?rg?os de prote??o ao consumidor. Admite como premissa hipot?tica de solu??o, a redu??o dos n?veis de multas no setor de telefonia m?vel, embasando esta tese no m?todo Analytic Hierarchy Process (AHP). Os resultados da an?lise est?o ordenados sob os seguintes crit?rios: cobran?as indevidas , falha no atendimento , qualidade do servi?o , bloqueio , atraso na entrega e propaganda enganosa . Sob a an?lise de sensibilidade, tamb?m se apontam varia??es peri?dicas da import?ncia relativa entre tais crit?rios. Logo, identificadas as devidas import?ncias relativas a cada um dos problemas, cabe ?s organiza??es de telefonia m?vel analisar cada um destes problemas, identificando suas respectivas causas. Por conseguinte, tal an?lise das causas viabilisar? o desenvolvimento de planos operacionais que visam solu??es mais eficazes e efetivas da atual conjuntura.

Made available in DSpace on 2016-04-28T20:15:35Z (GMT). No. of bitstreams: 1 2009- Guilherme Rodrigues Brito.pdf: 459862 bytes, checksum: c031fecfbd14597be54c60c23a0dc04c (MD5) Previous issue date: 2009-02-27 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior / The dairy cattle is an activity of great value of agricultural sector and perform important function in economic and social development of Brazil. Of health and zootechnical viewpoint, milk production is full of challenges, it is necessary studies to correlate various factors that may constitute limits to growth in dairy sector. The research aimed to correlate seven variables: the milk s production, the parasitic infestation by Haematobia irritans, Rhipicephalus (Boophilus) microplus and larvae of Dermatobia hominis; the body condition score, the genetic group and order of birth in mixed race Holstein female, belonging to the Company for Agricultural Research of Rio de Janeiro State - Experimental Station of Serop?dica - RJ. Were used 58 lactating animals Holstein x Zebu between november 2007 to october 2008. The weights of production of milk, the counts of ectoparasites and evaluate of body condition scores were taken every seven days. The genetic group and order of birth were obtained from files of Company. For statistical analysis of data, was proceed the Pearson Correlation (P <0.05) and multivariate analysis using the technique of principal components. We observed a positive correlation between milk production and number of flies, milk production and number of Dermatobia larvae and milk production and order of birth of animals. The variable of body condition score had negative correlation with number of ticks and positive correlation with the genetic group and order of birth. There was positive correlation between the number of flies and order of birth of animals. Among the variables number of ticks and genetic group the correlation was negative. The application of multifactorial analysis using the principal components F1 and F2 confirmed the Pearson correlations allowing a proper interpretation of results. / A bovinocultura leiteira ? uma atividade de grande valor do setor agropecu?rio e desempenha fun??o relevante no desenvolvimento econ?mico e social do Brasil. Do ponto de vista sanit?rio e zoot?cnico, a produ??o de leite ? repleta de desafios, sendo necess?rios estudos que visem correlacionar os diversos fatores que podem constituir em obst?culos ao crescimento do setor leiteiro. A pesquisa objetivou correlacionar sete vari?veis: a produ??o de leite, as infesta??es parasit?rias por Haematobia irritans, Rhipicephalus (Boophilus) microplus e larvas de Dermatobia hominis; o escore da condi??o corporal, o grupamento gen?tico e a ordem de parto em f?meas Holandesas Mesti?as pertencentes ? Empresa de Pesquisa Agropecu?ria do Estado do Rio de Janeiro - Esta??o Experimental de Serop?dica - RJ. Foram utilizados 58 animais lactantes Holand?s x Zebu no per?odo de novembro de 2007 a outubro de 2008. As pesagens das produ??es de leite, as contagens de ectoparasitos e a avalia??o dos escores da condi??o corporal foram realizadas a cada sete dias. O grupamento gen?tico e a ordem de parto foram obtidos a partir dos arquivos da Empresa. Para a an?lise estat?stica dos dados procedeu-se a correla??o de Pearson (P < 0,05) e an?lise multivariada utilizando-se a t?cnica dos componentes principais. Foi observada correla??o positiva entre a produ??o de leite e n?mero de moscas, produ??o de leite e n?mero de bernes e produ??o de leite e ordem de parto dos animais. A vari?vel escore da condi??o corporal apresentou correla??o negativa com o n?mero de carrapatos e correla??o positiva com as vari?veis grupamento gen?tico e ordem de parto. Verificou-se correla??o positiva entre o n?mero de moscas e a ordem de parto dos animais. Entre as vari?veis n?mero de carrapatos e grupamento gen?tico foi observada correla??o negativa. O emprego da An?lise Multifatorial utilizando os componentes principais F1 e F2 confirmou as correla??es de Pearson permitindo uma apropriada interpreta??o dos resultados.

CAPES / Honey is generally known for its therapeutic value and the determination of its main floral source allows the certification to the consumer the properties related to its origin. Thus, the aim of this work was to evaluate the quality and characterize eleven honeys from Apis mellifera from the state of Rio de Janeiro according to physico-chemical parameters, to phenolics profile, to the antioxidant activity and also through the use of chemonetric analysis applied to 1H NMR data and HPLC-DAD. Two samples of assa peixe, six samples of cambara and three samples of morr?o-de-candeia honeys from diferente regions of Rio de Janeiro were analyzed. The physico-chemical parameters determined were: HMF content and color through a spectrophotometric method, free acidity and pH. The content of free amminoacids was also determined through the c?dmium-ninhydrine together with total proteins via the Bradford method. The antioxidant ability of honeys and their extracts was qualitatively determined through the total phenolics content using the Folin-Denis method. Total flavonoids were determined by the complexation method with aluminium chloride. The quantitative antioxidant activity of honeys was determined by the trapping of the 2,2-diphenyl-1-picryl-hydrazyl (DPPH) radical, by trapping of the ABTS.+ radical and also by the iron reduction method (FRAP). The identification and quantitation of polyphenols in the extracts were done by HPLC-PDA. The use of multivariate analysis for the 1H NMR data and HPLC enabled the distinction of the honeys analyzed in this work. Thus, the use of 1H NMR and HPLC data combined with multivariate analysis may be employed as a new strategy for the fast and non-destructive typification of Brazilian honeys. / No mercado, m?is s?o conhecidos pelo seu poder terap?utico e a designa??o de sua principal fonte floral permite atestar ao consumidor as propriedades de sua origem. Assim, o objetivo deste trabalho foi avaliar a qualidade e caracterizar onze m?is de Apis mellifera provenientes do Estado do Rio de Janeiro, por meio de par?metros f?sico-qu?micos, do perfil de subst?ncias fen?licas, de seus potenciais antioxidantes, al?m de usar m?todos quimiom?tricos aplicados aos dados de RMN de 1H e CLAE-DAD. Para tanto, utilizou-se duas amostras de mel de assa peixe, seis de cambar? e tr?s de morr?o de candeia de diferentes munic?pios do Rio de Janeiro. Os par?metros f?sico-qu?micos avaliados foram: teor de HMF e a cor utilizando m?todo espectrofotom?trico, acidez livre e pH. Al?m dessas determina??es, o conte?do de amino?cidos livre foi avaliado pelo m?todo de c?dmio-ninidrina, e prote?nas totais pelo m?todo de Bradford. A capacidade antioxidante dos m?is e de seus extratos foi avaliada qualitativamente atrav?s do conte?do de fen?licos total pelo m?todo de Folin-Denis, e de flavon?ides total pelo m?todo de complexa??o com cloreto de alum?nio. A quantifica??o do potencial antioxidante foi realizada pela captura do radical 2,2-difenil-1-picril-hidrazil (DPPH), captura do radical livre ABTS.+, al?m do m?todo de redu??o do ?on f?rrico (FRAP). A identifica??o e quantifica??o das subst?ncias polifen?licas dos extratos foi feita por cromatografia l?quida de alta efici?ncia com detector de arranjo de diodos (CLAE-DAD). A aplica??o da an?lise multivariada aos dados de RMN de H e de CLAE-DAD distinguiu os m?is de assa peixe, cambar? e morr?o de candeia produzidos no Estado do Rio de Janeiro. Assim, o uso de RMN de 1H e CLAE-DAD combinado com a quimiometria pode ser uma nova estrat?gia para tipifica??o de m?is brasileiros de forma r?pida e n?o destrutiva.

Submitted by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-01-23T14:01:55Z No. of bitstreams: 5 5.pdf: 1593900 bytes, checksum: 2373f74a6227b91b45de5fc1b4212e3e (MD5) license_url: 52 bytes, checksum: 3d480ae6c91e310daba2020f8787d6f9 (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-02-10T13:08:32Z (GMT) No. of bitstreams: 5 5.pdf: 1593900 bytes, checksum: 2373f74a6227b91b45de5fc1b4212e3e (MD5) license_url: 52 bytes, checksum: 3d480ae6c91e310daba2020f8787d6f9 (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) / Made available in DSpace on 2015-02-10T13:08:32Z (GMT). No. of bitstreams: 5 5.pdf: 1593900 bytes, checksum: 2373f74a6227b91b45de5fc1b4212e3e (MD5) license_url: 52 bytes, checksum: 3d480ae6c91e310daba2020f8787d6f9 (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) Previous issue date: 2012 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES) / Funda??o de Amparo ? Pesquisa do estado de Minas Gerais (FAPEMIG) / Este trabalho teve como objetivo conhecer a estrutura, composi??o flor?stica e rela??o vegeta??o-ambiente em comunidades arbustivo-arb?reas de diferentes fitofisionomias de Cerrado. Os fragmentos situam-se na Fazenda Experimental do Moura em Curvelo-MG (cerrado sentido restrito ? 18,84? S e 44,39? W; cerrad?o ? 18?82? S e 44?25? W; altitude m?dia de 715 m), sob clima do tipo Aw de K?ppen e sobre substrato de Latossolos ?cidos e distr?ficos. O Invent?rio florestal foi conduzido por meio de parcelas permanentes retangulares (20?50 m) com ?rea de 1000 m?; para a regenera??o natural (RN), utilizou-se sub-parcelas com ?rea de 100 m? (2?50 m), instaladas no centro de cada parcela. Foram instaladas trinta unidades amostrais na ?rea de cerrado sentido restrito (quinze para a vegeta??o adulta e quinze para a RN) e dez unidades na ?rea de cerrad?o. O compartimento adulto foi representado por todos os indiv?duos vivos dentro das parcelas com DAS (circunfer?ncia a 0,3 m do n?vel do solo) > 5,0 cm, e nas sub-parcelas, para a RN, registrou-se todo indiv?duo vivo com comprimento de fuste > 10 cm e DAS < 5,0. ?rvore com fuste bifurcado foi inclu?da como indiv?duo ?nico e no caso da vegeta??o adulta quando o valor dos DAS fundidos atendia ao crit?rio. A RN foi subdividida em tr?s classes de di?metro: I ? (DB entre 0,028 e 2,0 cm); II ? (DB entre 2,0 e 4,0 cm) e III ? (DB > 4,0 cm). Foram coletadas vari?veis ambientais para cada parcela para subsidiar an?lises diretas de gradiente por meio de duas matrizes (vegeta??o e ambiente). Foram realizadas an?lises de diversidade alfa e beta temporal (cerrado sentido restrito entre adultos e RN). Foi registrado um total de 127 esp?cies nas tr?s ?reas, sendo 39 fam?lias identificadas e 89 g?neros identificados. As an?lises de correspond?ncia can?nica indicaram correla??es significativas entre distribui??o espacial da abund?ncia de esp?cies com algumas vari?veis ambientais para quatro das cinco an?lises realizadas (duas para o compartimento adulto e tr?s para as classes da RN). As an?lises indicaram valores de diversidade alfa condizentes para ?reas de Cerrado. Destacam-se em fun??o da densidade, em toda a amostragem, os g?neros Annona, Byrsonima, Erythroxylum, Myrcia e Qualea e a esp?cie Magonia pubescens. / Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Ci?ncia Florestal, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2011. / ABSTRACT This study aimed to know the structure, floristic composition and environment-vegetation relationship in communities of different woody vegetation types of the Cerrado. The fragments are located in the Experimental Farm in Curvelo Moura, MG (cerrado sentido restrito ? 18,84? S e 44,39??W; cerrad?o-cerrado sentido restrito transition ? 18?82??S e 44?25??W; average elevation of 715 m), climate under the K?ppen Aw and on substrate of dystrophic and acids. The forest inventory was conducted by means of rectangular permanent quadrats (20 ? 50 m) with an area of ??1000 m?. For natural regeneration (RN), we used sub?-plots with an area of ??100 m? (2 ? 50 m) installed in the center of each plot. Thirty sample units were installed in the area of ??cerrado sensu stricto (fifteen to vegetation and fifteen adult to RN) and ten units in the area of ??dense cerrad?o-cerrado sentido restrito transition. The adult compartment was represented by all individuals living within the plots with diameter at soil height (DSH - diameter to 0.3 m from ground level) >?5.0 cm, and in sub-quadrats, natural regeneration (RN) composed of alive individuals with long stem >?10?cm e DSH <?5.0. Tree with bifurcated stem were included as a unique individual, and in case of adult vegetation, only included when the value of square root of the sum-square of DSH had been greater than criterion. The RN were divided into three diameter classes: I - (DB between 0.028 and 2.0 cm), II - (DB between 2.0 and 4.0 cm) and III - (DB> 4.0 cm). Environmental variables were collected for each plot to subsidize direct gradient analysis by means of two arrays (vegetation and environment). Were performed analyzes of alpha and beta temporal diversity (in cerrado sensu stricto between adults and RN). It was recorded a total of 127 species in three areas, and identified 39 families and 89 genera identified. The canonical correspondence analysis indicated significant correlations between spatial distribution of species abundance with some environmental variables for four of the five tests performed (two for the adult compartment and three classes for the classes of RN). Stand out as a function of density in the entire sample, gender Annona, Byrsonima, Erythroxylum, Myrcia and Qualea, and the specie Magonia pubescens.