viii, 107 p. A print copy of this thesis is available through the UO Libraries. Search the library catalog for the location and call number. / This dissertation consists of two related parts. In the first portion we use the tracial Rokhlin property for actions of a finite group G on stably finite simple unital C *-algebras containing enough projections. The main results of this part of the dissertation are as follows. Let A be a stably finite simple unital C *-algebra and suppose a is an action of a finite group G with the tracial Rokhlin property. Suppose A has real rank zero, stable rank one, and suppose the order on projections over A is determined by traces. Then the crossed product algebra C * ( G, A, à à ±) also has these three properties. In the second portion of the dissertation we introduce an analogue of the tracial Rokhlin property for C *-algebras which may not have any nontrivial projections called the projection free tracial Rokhlin property . Using this we show that under certain conditions if A is an infinite dimensional simple unital C *-algebra with stable rank one and à à ± is an action of a finite group G with the projection free tracial Rokhlin property, then C * ( G, A, à à ±) also has stable rank one. / Adviser: Phillips, N. Christopher

vii, 124 p. : ill. A print copy of this thesis is available through the UO Libraries. Search the library catalog for the location and call number. / This dissertation is a study of the relationship between minimal dynamical systems on the product of the Cantor set ( X ) and torus ([Special characters omitted]) and their corresponding crossed product C *-algebras. For the case when the cocyles are rotations, we studied the structure of the crossed product C *-algebra A by looking at a large subalgebra A x . It is proved that, as long as the cocyles are rotations, the tracial rank of the crossed product C *-algebra is always no more than one, which then indicates that it falls into the category of classifiable C *-algebras. In order to determine whether the corresponding crossed product C *-algebras of two such minimal dynamical systems are isomorphic or not, we just need to look at the Elliott invariants of these C *-algebras. If a certain rigidity condition is satisfied, it is shown that the crossed product C *-algebra has tracial rank zero. Under this assumption, it is proved that for two such dynamical systems, if A and B are the corresponding crossed product C *-algebras, and we have an isomorphism between K i ( A ) and K i ( B ) which maps K i (C(X ×[Special characters omitted])) to K i (C( X ×[Special characters omitted])), then these two dynamical systems are approximately K -conjugate. The proof also indicates that C *-strongly flip conjugacy implies approximate K -conjugacy in this case. We also studied the case when the cocyles are Furstenberg transformations, and some results on weakly approximate conjugacy and the K -theory of corresponding crossed product C *-algebras are obtained. / Committee in charge: Huaxin Lin, Chairperson, Mathematics Daniel Dugger, Member, Mathematics; Christopher Phillips, Member, Mathematics; Arkady Vaintrob, Member, Mathematics; Li-Shan Chou, Outside Member, Human Physiology

As estatinas são medicamentos comumente prescritos para a prevenção da hiper-lipidemia. Além da redução do colesterol, tais medicamentos parecem estimular a osteogênese e suprimir a reabsorção óssea, o que poderia afetar a movimentação dentária induzida (MDI) e a recidiva ortodôntica. Assim, o objetivo deste estudo foi determinar se a atorvastatina (ATV) pode afetar a MDI, a recidiva e a osteoclastogênese, por meio da modulação da expressão das moléculas: - ligante do receptor ativador de NFκB (RANKL) e osteoprotegerina (OPG). Ainda foram analisados os potenciais efeitos adversos da ATV sobre a ossificação endocondral e sobre o turnover de ossos longos. No primeiro experimento, 36 ratos foram sujeitos a MDI durante 21 dias, quando o aparelho foi removido. Aos animais, foram administrados, diariamente, ATV ou solução salina (SAL), via gavagem. Após 7, 14 e 21 dias de administração de ATV / SAL, a recidiva dentária foi mensurada, e foram obtidos os cortes histológicos da maxila e fêmur, os quais foram submetidos às seguintes colorações: - H&E – para análise histomorfométrica; - fosfatase acida tartrato resistente (TRAP) – para contagem de osteoclastos e; - imunohistoquímica para RANKL e OPG. A atorvastatina resultou numa inibição da recidiva ortodôntica (p < 0,05), e numa transiente redução do número de osteoclastos (p < 0,05); havendo uma correlação positiva e significativa (p < 0,01) entre o estes dois fatores (número de osteoclastos e a taxa de recidiva). A administração de estatinas também aumentou significativamente a expressão de OPG (p < 0,01), mas não a de RANKL. Além disso, após 21 dias de administração de ATV, a espessura da cartilagem da placa de crescimento e da zona hipertrófica condrocítica foi significativamente aumentada. Já no segundo experimento, 24 ratos começaram a receber diariamente ATV ou solução salina (SAL), via gavagem. Duas semanas mais tarde, a MDI foi iniciada. O deslocamento do dente foi medido após 7, 14 e 21 dias, enquanto que os cortes histológicos da maxila e do fêmur foram obtidos após 14 e 21 dias de MDI; sendo então submetidos às colorações de H&E e TRAP, para avaliação histomorfométrica e contagem de osteoclastos. A administração de atorvastatina gerou um menor movimento dentário (p <0,05) e uma redução transitória do número de osteoclastos (p <0,05). No grupo SAL, após 14 dias de MDI, ocorreu um aumento no número de osteoclastos, assim reduzindo a taxa de volume ósseo, quando comparado com as maxilas controle (sem movimento dentário), deste mesmo grupo. Contudo, tal comportamento não foi observado no grupo ATV. Interessantemente, depois de 35 dias, a atorvastatina não afetou a remodelação óssea nas maxilas controle, nem a ossificação endocondral em fêmures. Logo, guardando as devidas limitações deste estudo pré-clínico, nossos resultados sugerem que a administração sistêmica de atorvastatina é capaz de minimizar a MDI e recidiva ortodôntica. No entanto, os seus efeitos celulares sobre a ossificação endocondral e remodelação óssea durante a MDI e recidiva, parecem ser limitados a um curto período de tempo, o que aparentemente necessita de investigações futuras. Finalmente, nossos resultados lançam luz sobre a superexpressão OPG induzida por estatinas, o que representa um alvo molecular para modular o metabolismo do ósseo e, assim minimizar a recidiva ortodôntica. / Statins are drugs commonly prescribed for prevention of hyper-lipidemia. In addition to the cholesterol-lowering, these medicines seem to enhance osteogenesis and suppress bone resorption, which could affect orthodontic tooth movement (OTM) and relapse. Therefore, the aim of this study was to determine whether atorvastatin (ATV) might affect the orthodontic relapse or tooth movement and osteoclastogenesis, through the modulation of the following molecules: receptor activator of nuclear κ B ligand (RANKL) and; - osteoprotegerin (OPG). Furthermore, we analyzed potential adverse effects of ATV on long bone turnover and endochondral ossification. In the first experiment, 36 rats were subjected to OTM for 21 days, when the appliance was removed. After, the animals were administered daily with ATV (15mg/Kg) or saline (SAL), via gavage (n=18, per group). Up to 7, 14 and 21 days of ATV/SAL administration the tooth relapse was measured while maxillary and femur histologic sections were obtained and prepared to: - H&E staining – used in histomorphometric analysis, tartrate resistant acid phosphatase histochemical staining (TRAP) – used to osteoclasts counting and, immunohistochemistry to RANKL and OPG. Atorvastatin resulted in a decreased tooth relapse (p<0.05), and a transient reduction of osteoclasts number (p<0.05). There was a positive and significant correlation (p<0.01) between these two parameters (osteoclasts number and relapse rate). The statin administration increased significantly the OPG (p<0.01), but not the RANKL expression. Furthermore, after 21 days of ATV administration, the thickness of growth plate cartilage and chondrocytic hypertrophic zone was enhanced. In the second experiment, 24 rats started to be administered daily with ATV or SAL, via gavage. Two weeks later, the OTM started. The tooth displacement was measured after 7, 14, and 21 days, while the maxillary and femur histologic sections were obtained only after 14 and 21 days of OTM. At these times, the sections were prepared to H&E and TRAP, intending to perform the histomorphometric analysis and osteoclasts count. Atorvastatin administration promoted a decreased tooth movement (p<0.05), and a transient reduction of osteoclasts number (p<0.05). In the SAL group, after 14 days of OTM, the increased number of osteoclasts was associated to a reduced bone volume rate, when compared to its control maxillae. However, this trend was not obvious in ATV group. Interestingly, after 35 days, statins did not affect the bone turnover and endochondral ossification. The big picture of our study suggests that systemic administration of statins is able to minimize OTM and relapse. However, its cellular effects on endochondral ossification and bone turnover during OTM or relapse seem to be limited to a short period, apparently requiring further investigations. Finally, our results shed light on OPG overexpression induced by statins, which represents a molecular target modulating maxillary bone metabolism thus inhibiting orthodontic relapse.

Neste trabalho estudaremos alguns resultados propostos por Benoit Kloe kner [Kl2] em sua tese de doutorado. Apresentamos prin ipalmente a prova da não-existência de compactificações diferenciáveis de Hadamard em espaços simétri os de tipo não- ompa to de posto k ≥ 2. / In this dissertation we will study some results proposed by Benoit Kloe kner [Kl2] in his do toral thesis. We mainly present the proof of non-existen e of diferentiable Hadamard compactific ations in symmetric spaces of non compact type of rank ≥ 2.

Made available in DSpace on 2014-06-11T19:31:10Z (GMT). No. of bitstreams: 0 Previous issue date: 2007-12-10Bitstream added on 2014-06-13T19:01:31Z : No. of bitstreams: 1 manfrin_tm_dr_araca.pdf: 3862156 bytes, checksum: dd6ccb05bd3012f8f38552fa7c669deb (MD5) / O sistema OPG, RANK e RANKL é uma das mais importantes descobertas da biologia óssea. Essas proteínas regulam as atividades celulares na remodelação do tecido ósseo e na literatura há diversas investigações nos tecidos dentários. No entanto, no reimplante dentário, ainda não foram encontrados relatos. Foi objetivo deste trabalho, avaliar a imunomarcação das proteínas OPG, RANK e RANKL em dentes reimplantados de rato. Um grupo controle foi formado com quatro ratos no qual o reimplante dentário não foi realizado. Vinte e quatro ratos (Rattus norvegicus, albinus) tiveram seu incisivo superior extraído e depois reimplantado formando os seguintes grupos: grupo I – reimplante imediato; grupo II - reimplante tardio sem tratamento e grupo III - reimplante tardio com tratamento endodôntico (ressecção da papila dentária e preenchimento do canal com pasta de hidróxido de cálcio) e tratamento da superfície radicular (raspagem mecânica do ligamento periodontal necrosado e imersão em solução de flúor fosfato acidulado de sódio a 2,5%). Ao final dos períodos experimentais (10 e 60 dias) os ratos foram eutanasiados. Foram obtidos cortes longitudinais parafinados com 6μm de espessura. Os cortes foram submetidos à reação imunoístoquímica mediante a utilização de anticorpos primários para OPG, RANK e RANKL. Os resultados mostraram que a imunomarcação de OPG e RANKL ocorreu em todos os grupos e períodos estudados, muito embora RANKL não tenha sido observada no grupo reimplante imediato aos 60 dias. RANK foi observada somente aos 10 dias de todos os grupos no qual o reimplante foi realizado. A análise qualitativa dos resultados demonstrou que o sistema OPG, RANK e RANKL apresentou marcação evidente no reimplante tardio, sugerindo a efetiva participação no início do processo de reabsorção radicular, uma vez que aos 60 dias a imunomarcação foi discreta. / The OPG, RANK and RANKL system is one of the most important discoveries in bone biology. These proteins are key regulators of bone remodeling and in the literature there are several studies of tooth resorption. However, in tooth replantation, reports have not been found. The purpose of this study was to determine the immunolabeling of OPG, RANK and RANKL in replanted teeth in rats, using immunohistochemistry methodology. A control group (no replanted teeth) was formed by four rats. Twenty-four rats (Rattus norvegicus, albinus) were submitted to the extraction of their upper right incisors. The replantation was performed according to the groups below: group I – immediate replantation; group II – delay replantation without treatment and group III – delay replantation with endodontic treatment (extirpation of papilla and the root canal filled with calcium hydroxide) and root surface treatment (periodontal ligament was removed with scalpel and teeth were immersed in 2% acidulated phosphate sodium fluoride). The animals were euthanized at the end of the experimental periods (10 and 60 days). Longitudinal 6μm slices embedded in paraffin were obtained. The slices were submitted to immunohistochemistry reaction by means of the primary antibodies for OPG, RANK and RANKL proteins. The results showed the expression of OPG in all groups and periods. RANKL expression was observed in all groups, except in the immediate replanted teeth group (60 days). RANK expression was observed only at 10 days in all groups which replantation was performed. The qualitative analysis of our findings indicated that the system OPG, RANK and RANKL presented strong expression in delayed replantation, suggesting effective participation at the beginning of root resorption, since at 60 days the immunostained cells were discreet.

abstract: Modern measurement schemes for linear dynamical systems are typically designed so that different sensors can be scheduled to be used at each time step. To determine which sensors to use, various metrics have been suggested. One possible such metric is the observability of the system. Observability is a binary condition determining whether a finite number of measurements suffice to recover the initial state. However to employ observability for sensor scheduling, the binary definition needs to be expanded so that one can measure how observable a system is with a particular measurement scheme, i.e. one needs a metric of observability. Most methods utilizing an observability metric are about sensor selection and not for sensor scheduling. In this dissertation we present a new approach to utilize the observability for sensor scheduling by employing the condition number of the observability matrix as the metric and using column subset selection to create an algorithm to choose which sensors to use at each time step. To this end we use a rank revealing QR factorization algorithm to select sensors. Several numerical experiments are used to demonstrate the performance of the proposed scheme. / Dissertation/Thesis / Doctoral Dissertation Applied Mathematics 2015

abstract: With the advent of Internet, the data being added online is increasing at enormous rate. Though search engines are using IR techniques to facilitate the search requests from users, the results are not effective towards the search query of the user. The search engine user has to go through certain webpages before getting at the webpage he/she wanted. This problem of Information Overload can be solved using Automatic Text Summarization. Summarization is a process of obtaining at abridged version of documents so that user can have a quick view to understand what exactly the document is about. Email threads from W3C are used in this system. Apart from common IR features like Term Frequency, Inverse Document Frequency, Term Rank, a variation of page rank based on graph model, which can cluster the words with respective to word ambiguity, is implemented. Term Rank also considers the possibility of co-occurrence of words with the corpus and evaluates the rank of the word accordingly. Sentences of email threads are ranked as per features and summaries are generated. System implemented the concept of pyramid evaluation in content selection. The system can be considered as a framework for Unsupervised Learning in text summarization. / Dissertation/Thesis / Masters Thesis Computer Science 2015

Conselho Nacional de Desenvolvimento Científico e Tecnológico / Brazil is considered the largest consumer of pesticides in the world. To apply these inputs are used, in many cases, hydraulic self-propelled sprayer boom. In Brazil there are few tools that assist the farmer in choosing the ideal model of self-propelled sprayer, optimizing purchasing and reducing costs. Considering the lack of evaluative material from these machines, the central objective of this thesis is to establish a classification system for self-propelled sprayers sold in Brazil, from its theoretical operating capacity and also perform evaluations of some of these specific machine systems. For that, a classification system based on the combined theoretical operational capacity was created, as were tests conducted as the sound pressure inside the cabin of machines in operation and was also evaluated the preview percentage boom. For it was developed an equipment (View Simulator Operator) that simulates an operator sitting in the spray seat. We identified six different types of sprays configuration sold in Brazil, these six types differ as to the boom position, cabin, spray tank and engine. If one can assign advantages and disadvantages to each type of configuration. Considering the 14 brands operating in the Brazilian market and adding models each offers are available 42 models of self-propelled sprayers designed for use in Brazil grain crops. By applying the rating system created in this thesis, the models of self-propelled sprayers manufactured in Brazil were divided into four classes (I, II, III and IV). With increasing class tended to increase the clearance of sprayers, as well as increasing the size of the boom, operation speed and the size of the spray tank, however these items when evaluated independently do not justify the step increase. Regarding the measured sound pressure in the cabin of sprayers with different engine positions, significant differences were observed between the assessed machines, with lower sound pressure on machines with rear engine. As for the percentage of viewing the boom, the machine with the highest visibility has in its central cabin configuration and back boom. / O Brasil é considerado o maior consumidor de agrotóxicos do mundo. Para aplicar estes insumos, são utilizados, em muitos casos, pulverizadores hidráulicos de barras autopropelidos. No Brasil, são escassas as ferramentas que auxiliam o produtor na escolha do modelo ideal de pulverizador autopropelido, otimizando a compra e reduzindo custos. Considerando a escassez de material avaliativo dessas máquinas, o objetivo central desta tese consiste em estabelecer um sistema de classificação dos pulverizadores autopropelidos comercializados no Brasil a partir de sua capacidade operacional teórica e também realizar avaliações em sistemas específicos de algumas destas máquinas. Para isso, foi criado um sistema de classificação baseado na capacidade operacional teórica combinada, assim como foram efetuadas avaliações quanto a pressão sonora dentro da cabine de máquinas em operação e também foi avaliado o percentual de visualização das barras. Para isso, foi desenvolvido um equipamento (Simulador de Visualização do Operador) que simula um operador sentado no assento do pulverizador. Foram identificados seis tipos distintos de configuração dos pulverizadores comercializados no Brasil. Esses seis tipos diferem entre si quanto ao posicionamento de Barras, Cabine, Reservatório de Calda e Motor. Podem ser atribuídas vantagens e desvantagens para cada tipo de configuração. Considerando as 14 marcas atuando no mercado nacional e somando os modelos que cada uma oferece, são disponibilizados 42 modelos de pulverizadores autopropelidos projetados para serem utilizados em culturas de grãos do Brasil. Por meio da aplicação do sistema de classificação criado nesta tese, os modelos de pulverizadores autopropelidos fabricados no Brasil foram divididos em quatro classes (I, II, III e IV). Com o aumento da classe, houve tendência de aumento do vão livre dos pulverizadores, assim como aumento do tamanho das barras, da velocidade de deslocamento e do tamanho do reservatório de calda. Porém, estes itens, quando avaliados de forma independente, não justificam o aumento de classe. Em relação à pressão sonora medida na cabine dos pulverizadores com distintos posicionamentos de motor, foi observada diferença significativa entre as máquinas avaliadas, havendo menor pressão sonora em máquinas com motor traseiro. Quanto à porcentagem de visualização das barras, a máquina que apresentou maior visibilidade possui em sua configuração cabine central e barra de pulverização traseira.

Submitted by ANA KARLA PEREIRA RODRIGUES (anakarla_@hotmail.com) on 2017-08-16T13:43:54Z No. of bitstreams: 1 arquivototal.pdf: 497004 bytes, checksum: f533fe667e534433904bf0bb58473fac (MD5) / Made available in DSpace on 2017-08-16T13:43:54Z (GMT). No. of bitstreams: 1 arquivototal.pdf: 497004 bytes, checksum: f533fe667e534433904bf0bb58473fac (MD5) Previous issue date: 2015-08-28 / Conselho Nacional de Pesquisa e Desenvolvimento Científico e Tecnológico - CNPq / Let k be an algebraically closed eld of characteristic zero and consider the polynomial ring S = k[x1, . . . , xn] endowed with the standard grading. The Waring's problem for a form F ∈ S of degree d asks about the least integer s ≥ 1 for which there exist linear forms L1, . . . , Ls ∈ S satisfying F = Σs i=1 Ldi. Such integer is called Waring rank of F. In this dissertation, we present a solution to this problem { due to Carlini-Catalisano-Geramita { in the case of monomials, as an interesting application of a theorem (due to the same authors) that establishes a lower bound for the multiplicity of (standard) graded, nitely generated, reduced, 1-dimensional k-algebras. / Seja k um corpo algebricamente fechado de caracter stica zero e considere o anel de polin^omios S = k[x1, . . . , xn] munido da gradua c~ao padr~ao. O Problema de Waring para uma forma F ∈ S de grau d questiona a respeito do menor inteiro s ≥ 1 para o qual existem formas lineares L1, . . . , Ls ∈ S satisfazendo F = Σs i=1 Ldi. Tal inteiro e denominado posto de Waring de F. Nesta disserta c~ao, apresentamos uma solu c~ao deste problema { devida a Carlini-Catalisano-Geramita { no caso de mon^omios, como uma interessante aplica c~ao de um teorema (dos mesmos autores) que estabelece uma cota inferior para a multiplicidade de k- algebras graduadas (padr~ao) nitamente geradas, reduzidas e 1-dimensionais.

Submitted by LUCAS HENRIQUE BRITO SALES null (lucash.b.s@hotmail.com) on 2017-07-31T16:19:43Z No. of bitstreams: 1 Dissertação FINAL_Lucas Brito.pdf: 2624281 bytes, checksum: 4b18f17d4f492f2f78b7d31bebab7f64 (MD5) / Approved for entry into archive by Luiz Galeffi (luizgaleffi@gmail.com) on 2017-08-03T15:04:42Z (GMT) No. of bitstreams: 1 sales_lhb_me_jabo.pdf: 2624281 bytes, checksum: 4b18f17d4f492f2f78b7d31bebab7f64 (MD5) / Made available in DSpace on 2017-08-03T15:04:42Z (GMT). No. of bitstreams: 1 sales_lhb_me_jabo.pdf: 2624281 bytes, checksum: 4b18f17d4f492f2f78b7d31bebab7f64 (MD5) Previous issue date: 2017-06-14 / Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) / A análise de componentes principais (PCA) e análise de fatores (FA) são amplamen-te utilizadas no processamento de dados visando a redução da dimensionalidade. No entanto, poucos são os estudos que empregou estes métodos em um conjunto de características importantes em bovinos da raça nelore com a finalidade de mode-lar a estrutura de (co)variância dos dados. O objetivo deste estudo foi estimar pa-râmetros genéticos para as características de crescimento, carcaça e qualidade da carne em machos Nelore, utilizando diferentes modelos multi-características visando a redução da dimensionalidade dos dados. Um total de 3.865; 4.121; 4.109; 4.188; 4.213; 3.320 e 16.575 registros de peso da carcaça quente (PCQ), área de olho de lombo (AOL), espessura de gordura subcutânea (EGS), escore de marmorização (MARM), maciez, mensurada pela força de cisalhamento (SF), lipídios (LP) e peso ao sobreano (PS), respectivamente, foram usados. As análises foram realizadas por meio de cinco modelos: multi-característica padrão, três modelos de posto reduzido ajustando os primeiros três (PC3), quatro (PC4) e cinco (PC5) componentes princi-pais genéticos e um modelo utilizando análise de fatores com três (FA3) fatores. Os modelos foram comparados pelo Critério de Informação de Akaike (AIC) e Critério Bayesiano de Schwarz (BIC), levando em consideração o número de parâmetros. Foram considerados para todos os modelos os efeitos aleatórios genético aditivo direto e residual, e os efeitos fixos do grupo de contemporâneos e o efeito linear da idade do animal ao abate como covariável, exceto para peso ao sobreano. Os mo-delos de análise de fatores e componentes principais genéticos selecionados por ambos os critérios de seleção foram o PC3 (BIC), PC4 (AIC) e o FA3 (AIC e BIC), com 46, 50 e 53 parâmetros, respectivamente. No entanto, o modelo que mais se aproximou do modelo multi-característica padrão foi o PC4, sendo então, o mais indicado devido a semelhança das estimativas de (co)variância. As estimativas de herdabilidade variaram de 0,06 (LP) a 0,31 (AOL) com MV e 0,04 (LP) a 0,30 (AOL) com o PC4. As maiores estimativas de correlações genéticas foram entre as carac-terísticas PCQ x SF, PCQ x PS e MARM x LP, sendo similar nos modelos MV e PC4. As maiores estimativas de correlações fenotípicas foram entre as característi-cas de peso e AOL (PS x SF), (PS x AOL) e (SF x AOL). Em geral, foram necessá-rios quatro componentes principais para modelar a estrutura das (co)variâncias ge-néticas para as características de crescimento, carcaça e qualidade da carne. O modelo de posto reduzido indicado pelo o AIC (PC4) reduziu o número de parâme-tros a serem estimados em 21,4%, sem diminuir a qualidade do ajuste. / Principal component (PCA) and factor analysis (FA) are widely used in data processing to reduce dimensionality. However, few studies have used these methods in a set of important traits in Nelore cattle for the purpose of modeling the covariance structure data. The aim of this study was to estimate genetic parameters for growth, carcass and meat quality traits in Nellore males, using different multivariate models to reduce the dimensionality data. A total of 3.865; 4.121; 4.109; 4.188; 4.123 3.320 and 16.575 records, hot carcass weight (HCW), 12-13th rib eye area (REA), backfat thickness (BF), marbling score (MS), warner-wraztler wear force (WBSF), lipid content (LC), and weight at 550 days (W550), respectively, were used. The analyzes were performed using five models: standard multi-characteristic, three reduced-rank models, and adjusted the first three (PC3), four (PC4) and five (PC5) genetic main components, and a model using factor analysis with three (FA3) factors. The models were compared by the Akaike Information Criterion (AIC) and Schwarz Bayesian Criterion (BIC), taking into account the parameters number. The random effects of the direct and residual additive genetic and the fixed effects of the contemporaneous group and the linear effect of animal age on slaughter were considered as covariate, except for yearling weight. The analysis models of genetic factors and main components selected by both selection criteria were PC3 (BIC), PC4 (AIC) and FA3 (AIC and BIC), with 46, 50 and 53 parameters, respectively. However, the model that most approached the standard multi-characteristic model was PC4, and is therefore most appropriate due to the similarity of covariance estimates. Estimates of heritability ranged from 0.06 (LP) to 0.31 (AOL) with MV and 0.04 (LP) to 0.30 (AOL) with PC4. The highest estimates of genetic correlations were among the characteristics PCQ x SF, PCQ x PS and MARM x LP, being similar in the MV and PC4 models. The highest estimates of phenotypic correlations were among the weight and AOL (PS x SF), (PS x AOL) and (SF x AOL) traits. In general, four main components were required to model the structure of the genetic covariances for growth, carcass and meat quality traits. The reduced rank model indicated by the AIC (PC4) reduced the parameters number to be estimated by 21.4%, without decreasing the quality of the adjustment. / CNPq: 184428-1