CoordenaÃÃo de AperfeiÃoamento de Pessoal de NÃvel Superior / Motivado pelo sucesso de Linked Data e impulsionado pelo crescimento do nÃmero de fontes de dados em formato RDF disponÃveis na Web, novos desafios para processamento de consultas estÃo emergindo, especialmente em configuraÃÃes distribuÃdas. No ambiente de Linked Data, à possÃvel executar consultas federadas, as quais envolvem junÃÃes de dados fornecidos por mÃltiplas fontes. O termo consulta federada à usado quando queremos prover soluÃÃes baseadas em informaÃÃes obtidas de diferentes fontes. Nesse sentido, a concepÃÃo de novos algoritmos e estratÃgias adaptativas para a execuÃÃo de junÃÃes de forma eficiente constitui um desafio importante. Nesse trabalho, apresentamos uma soluÃÃo para a execuÃÃo adaptativa de operaÃÃes de junÃÃes de dados em consultas federadas. A execuÃÃo da operaÃÃo de junÃÃo adaptativa entre informaÃÃes contidas em fontes de dados distribuÃdas baseia-se em estatÃsticas, que sÃo coletadas em tempo de execuÃÃo. Uma informaÃÃo estatÃstica sobre uma determinada fontes seria, por exemplo, o tempo decorrido (Elapsed Time) para obter algum resultado. Para obter as informaÃÃes estatÃsticas atualizadas, usamos uma estratÃgia que coleta essas informaÃÃes durante a execuÃÃo da consulta e,logo apÃs, sÃo armazenadas em uma base de dados local, na qual denominamos como catÃlogo de informaÃÃes estatÃsticas. / Motivated by the success of Linked Data and driven by the growing number of data sources into RDF files available on the web, new challenges for query processing are emerging, especially in distributed settings. These environments allow distributed execution of federated queries, which involve joining data provided by multiple sources, which are often unstable. In this sense, the design of new algorithms and adaptive strategies for efficiently implementing joins is a major challenge. In this paper, we present a solution to the adaptive joins execution in federated queries. The adaptative context of distributed data sources is based on statistics that are collected at runtime. For this, we use a module that updates the information in the catalog as the query is executed. The module works in parallel with the query processor.

Esta dissertação procura analisar os acordos de acionistas tipificados pelo art. 118 da Lei nº 6.404/76, mais especificamente, os acordos que regulam o exercício do voto e/ou o exercício do poder de controle. O interesse pelo tema é decorrente da falta de consenso da doutrina e da jurisprudência acerca do assunto, o que contribuiu fortemente para a insegurança jurídica no uso do instituto. Além disso, tal falta de consenso foi acentuada com a reforma da lei acionária pela Lei nº 10.303/01. Dessa forma, o presente trabalho busca, a partir da análise da doutrina pátria e da doutrina estrangeira, delimitar corretamente os principais conceitos acerca do acordo de voto. Com este objetivo, o presente trabalho começa com a análise das características históricas das sociedades anônimas, focada na definição de competência e interação entre os órgãos da companhia, resultando na conclusão de que no direito brasileiro, não há uma divisão fixa de competências entre os órgãos e há hierarquia entre tais órgãos, prevalecendo a assembleia geral de acionistas. Nos demais capítulos, o presente trabalho analisa: (a) o conceito de partes, estabelecendo que apenas acionistas podem ser partes em acordo de votos, (b) o objeto, reconhecendo o exercício do direito de voto e o exercício do poder de controle como objetos legítimos, admitindo-se assim a diferenciação entre acordo de comando e acordo de defesa, (c) as delimitações do objeto, demonstrando que interesse social e abuso de poder de controle são dois fortes delineadores do conteúdo dos acordos de voto, e (d) os efeitos dos acordos de voto, especificamente os acordos de defesa e os acordos de comando, vez que podem irradiar efeitos para os órgãos administrativos da companhia. Espera-se que este trabalho possa contribuir com o debate acerca do tema acordo de voto. / This dissertation endeavors an investigation on shareholders agreements set forth by Article 118 of Federal Law N. 6,404/76, more precisely, shareholders agreements that regulates the exercise of voting rights and/or the control over the company. The interest for the subject developed in view of the nonexistence of an agreement on the matter, either by the legal doctrine or the case law. Furthermore, the dissensions were heightened by the modifications Federal Law N. 10,303/01 implemented to Federal Law N. 6,404/76. In this sense, the present study pursues to correctly circumscribe the main concepts regarding voting agreements, through an analysis of Brazilian and foreign legal doctrine. With such purpose, this work starts with an examination of historical characteristics of joint-stock corporations, focusing on the definition of the powers regarding each body of the company, and on the interaction between them, coming to the conclusion that, under Brazilian law, there is no fixed partition of powers between the bodies, but there is hierarchy between them, being the shareholders meeting the prevalent body. Moreover, this dissertation investigates: (a) the concept of parties, concluding that only shareholders can be parties in voting agreements; (b) the object of shareholders agreements, recognizing the exercise of voting rights and the control over the company as lawful objects, acknowledging, therefore, the difference between commanding agreements and defense agreements; (c) the delimitations of the object, demonstrating that social interest and abuse of control over the company are two main aspects that bound the content of voting agreements; and (d) the effects of shareholders agreements, more specifically, the commanding agreements and defense agreements, considering that they may be effective over administrative bodies of the company. This work is expected to contribute with the debate regarding the matter on voting agreements.

Made available in DSpace on 2016-08-17T14:52:37Z (GMT). No. of bitstreams: 1 Dissertacao_Antonio Fhillipi Maciel Silva.pdf: 1349205 bytes, checksum: 378ccd63a39eda537c5123a20fcd3948 (MD5) Previous issue date: 2014-11-07 / The reuse of ontologies is a process in which the existing ontological knowledge is used as input to generate new ontologies, in order to reduce costs and increase the quality of the final product. However, techniques for building ontologies do not address reuse satisfactorily, even though this is an indispensable phase in ontology engineering. This work presents OntoJoin, a process for joining ontologies which employs lexical, structural and relational similarity analysis as mapping mechanisms. These mechanisms are responsible for identifying correspondences between elements of two ontologies given as input. These mechanisms are used to match similar elements, thus resulting in a new ontology generated from reuse. The set of mechanisms use "Lexical Comparison", which performs a comparison between the labels of the terms of the ontology elements; "Structural Comparison", which performs an analysis of the concepts and their respective hierarchical structure; "Relational Comparison", which performs an analysis of concepts, their properties and non-taxonomic relationships; and "Index of Terms", which alter the concepts for their better representation, is the main feature that gives OntoJoin the potential to achieve greater effectiveness at the junction of ontologies compared with previously proposed techniques. An experimental evaluation has been performed according two procedures based on the principle of comparing the joint ontology against a reference one. This experiment consisted in measuring with recall and precision the effectiveness of the process for combining two ontologies in the tourism and sales domains. The preliminary results demonstrate the feasibility of the proposed process in joining ontologies. / O reúso de ontologias é um processo em que o conhecimento ontológico existente é usado como entrada para gerar novas ontologias, visando a redução de custos e o aumento da qualidade do produto final. No entanto, as técnicas para construção de ontologias não abordam de maneira satisfatória o reúso, mesmo este sendo uma fase indispensável para a engenharia de ontologias. O presente trabalho apresenta o OntoJoin, um processo para junção de ontologias, que emprega a análise de similaridade lexical, estrutural e relacional como mecanismos de mapeamento. Esses mecanismos são responsáveis por identificar correspondências entre elementos de duas ontologias dadas como entrada. Essa correspondência é utilizada para combinar os elementos similares, resultando assim, em uma nova ontologia gerada a partir do reúso. O uso conjunto dos mecanismos Comparação Lexical , que realiza uma comparação entre os rótulos dos termos dos elementos; Comparação Estrutural , que realiza uma análise dos conceitos e sua respectiva estrutura hierárquica; Comparação Relacional , que realiza uma análise dos conceitos, suas propriedades e relações não taxonômicas; e Indexação dos Termos , que altera a hierarquia dos conceitos para representar melhor semanticamente os termos a serem combinados, é a característica principal que confere ao OntoJoin o potencial de obter maior efetividade na junção de ontologias em relação a técnicas até então propostas. A avaliação experimental do processo foi realizada conforme dois procedimentos baseados no princípio de comparação da ontologia combinada com a de referência. Esse experimento consistiu em mensurar com as medidas de avaliação cobertura e precisão, a efetividade do processo em combinar duas ontologias nos domínio do turismo e vendas. Os resultados obtidos demonstram preliminarmente a viabilidade do processo proposto na junção de ontologias.

Orientador: Marco Aurelio Amaral Henriques / Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Eletrica e Computação / Made available in DSpace on 2018-08-12T06:09:14Z (GMT). No. of bitstreams: 1 Pereira_AnaMariadeSeixas_M.pdf: 2667642 bytes, checksum: d79dd53fe62b9832524a344ff3c494ee (MD5) Previous issue date: 2008 / Resumo: O gerenciamento e a utilização de ambientes de computação em grade requerem um grande esforço na obtenção das informações necessárias para a administração e para a identificação e resolução de problemas. Acompanhar o desempenho das aplicações, determinar a origem de problemas, identificar e eliminar gargalos são funções que requerem informações detalhadas sobre a plataforma e sobre as aplicações sendo executadas. Neste trabalho apresentamos uma proposta para implementação de uma ferramenta para monitoramento do sistema JoiN de processamento maciçamente paralelo virtual. Após a análise de algumas das ferramentas hoje existentes para monitoramento de ambientes distribuídos não identificamos entre elas uma solução que satisfaça os requisitos do sistema JoiN e, por esta razão, implementamos uma nova ferramenta que procura integrar as melhores características encontradas nas ferramentas analisadas. As principais dificuldades encontradas na implementação desta ferramenta são relacionadas à obtenção e à publicação de um grande número de informações que permitam a observação e o monitoramento do sistema JoiN e que facilitem seu uso e sua administração, interferindo o mínimo possível com seu desempenho. Os resultados obtidos mostram que a ferramenta implementada no sistema JoiN oferece uma boa relação custo/benefício no monitoramento das principais funções deste sistema sem causar impactos significativos na execução de suas aplicações paralelas. / Abstract: Grid Computing environments management and utilization require a great effort in gathering necessary information for site administration and identification/resolution of problems. Discovering applications performance, determining the origin of problems, identifying and eliminating bottlenecks are functions thar require detailed information about the platform and the applications running. In this work we present a proposal for implementation of a monitoring tool for JoiN system, a massively virtual environment for parallel processing. After the analysis of some of the available monitoring tools for distributed environments, we could not identify among them a solution that meets JoiN requirements and, therefore, we decided to implemented a new tool which seeks to incorporate the best features found on analyzed tools. The main difficulties found in the implementation of this tool are related to the collection and publication of a large number of information that allow JoiN observation and monitoring and that helps its administration and use, interfering as little as possible with its performance. The results show that the tool implemented in JoiN system offers a good cost/benefit relationship in monitoring the main functions of this system without causing significant impacts in the execution of parallel applications. / Mestrado / Engenharia de Computação / Mestre em Engenharia Elétrica

Orientadores: Maria Beatriz Duarte Gavião, Paula Midori Castelo / Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Odontologia de Piracicaba / Made available in DSpace on 2018-08-22T17:09:49Z (GMT). No. of bitstreams: 1 Kobayashi_FernandaYukie_M.pdf: 1519430 bytes, checksum: c629d1b027f23b2673c41788cae33e51 (MD5) Previous issue date: 2013 / Resumo: O objetivo desta dissertação foi avaliar as variáveis morfológicas e fisiológicas em crianças e adolescentes diagnosticados com desordens temporomandibulares (DTMs). Dois estudos foram conduzidos. O primeiro teve como objetivo avaliar a força de mordida (FM) e as funções orofaciais nas diferentes fases da dentição (dentição mista inicial, intermediária e final e dentição permanente) em crianças e adolescentes com diagnóstico de DTMs. Participaram 290 indivíduos de 8 a 14 anos; 47 formaram o Grupo DTMS e 243 o Grupo controle. A DTM foi avaliada por meio do Research Diagnostic Criteria for Tempormandibular Disorders (RDC/TMD), eixo I, e diagnosticada conforme os critérios estabelecidos. As funções orofaciais foram avaliadas com a versão brasileira do Nordic Orofacial Test - Screening (NOT-S) (entrevista e exame clínico). Para mensuração da FM utilizou-se um gnatodinamômetro digital. Computou-se a idade e o índice de massa corporal (IMC). Os dados foram analisados pela estatística descritiva, teste t de Student, correlação de Pearson ou Spearman, qui-quadrado, teste binomial ou exato de Fisher e regressão logística (?=0,05). Observou-se que a prevalência de DTM foi mais alta em meninas na dentição permanente (p=0,014) e em meninos na dentição mista intermediária (p=0,006). No grupo DTM, os escores do NOT-S entrevista (p=0,026) e NOT-S total (p=0,0063) foram maiores em relação ao controle. Não houve diferença na FM entre gêneros e grupos (p>0,05). As variáveis incluídas na regressão logística múltipla foram o IMC e o NOT-S (entrevista, exame e total). A função sensorial da entrevista foi o domínio que determinou diferença significativa na proporção de indivíduos entre grupos (p=0,021). Observou-se número significativamente maior de indivíduos com DTMs com alteração no domínio face em repouso no exame clínico do NOT-S. Concluiu-se que as fases das dentições e a FM não foram associadas à DTM. A idade correlacionou-se positivamente com a FM e IMC na dentição permanente. As disfunções orofaciais foram consideradas a variável preditiva da DTM, mas a característica transversal do estudo infere que esta associação pode ser bidirecional. O segundo estudo teve como objetivo a quantificação dos biomarcadores salivares de estresse, cortisol e alfa-amilase, em crianças e adolescentes com DTM, na faixa etária de 7 a 14 anos. Trinta e oito indivíduos compuseram o Grupo DTM e 38 o Grupo controle, pareados pela idade, gênero e presença de bruxismo. A saliva foi coletada em domicílio durante dois dias alternados, ao acordar, após 30 e 60 minutos e às 20h00. O cortisol foi quantificado pela técnica de enzimaimunoensaio e a alfa-amilase pelo método enzimático automatizado. Os dados foram analisados pelo teste de Shapiro-Wilks, estatística descritiva, teste de Mann-Whitney e coeficiente de Spearman (?=0.05). A área sob a curva das concentrações de cortisol e alfa-amilase foi calculada pelo método trapezoidal. Não houve diferenças entre o cortisol salivar e alfa-amilase entre os grupos. As correlações entre os biomarcadores não foram significativas para os grupos DTM e controle (r=0.03 e r=0.17 respectivamente). Concluiu-se que os níveis de cortisol e alfa-amilase salivar não se apresentaram alterados em crianças e adolescentes com DTM / Abstract: The aim of this work was to evaluate the morphological and physiological variables in children and adolescents with temporomandibular disorders (TMDs). Two studies were carried out. The first aimed to evaluate the bite force (BF) and the orofacial functions in the different dentition phases (early, intermediate and final mixed dentition and permanent dentition) in children and adolescents with TMD diagnosis. Two-hundred ninety subjects participated; 47 composed the TMD group ad 243 the Control group. The TMD was diagnosed using Research Diagnostic Criteria for Temporomandibular Disorders (RDC/TMD), axis I. The orofacial functions were evaluated using the Nordic Orofacial Test - Screening (NOT-S) (interview and clinical examination). FM was measured using a digital gnathodynamometer. The age and body mass index (BMI) were considered. The data were analyzed by descriptive statistic, Student or Mann-Whitney test, Pearson or Spearman correlation, chi-square, binomial test or Fisher exact test and logistic regression (?=0.05). The prevalence of TMDs was higher for girls in permanent dentition (p=0.014) and for boys in intermediated mixed dentition (p=0.006). For TMD group the scores of NOT-S interview and the NOT-S total were higher than the Control group (p=0.026 and p=0.0063, respectively). There was not differences in BF between genders and groups (p>0.05). The variables included in the multivariate logistic regression were BMI and NOT-S (interview, exam and total). Sensory function of the interview was the domain that determined the significant difference in the proportions of subjects between groups (p=0.021). It was observed a greater number of boys and girls with alterations in face at rest domain in NOT-S exam. Concluding, the dentition phases and BF were not associated with TMD. The BF was correlated with age and BMI. The orofacial dysfunction was considered the predictor for TMD, but the cross-sectional design of the study infers that this association may be bidirectional. The second study aimed to quantify the stress biomarkers, cortisol and alpha-amylase, in children and adolescents with TMD, diagnosed using RDC/TMD, axis I. Thirty six subjects, aged from 7 to 14 years composed the TMD group and 36 the Control group, matched by gender, age and presence of bruxism. The saliva was collected at home during two alternate days, in the morning at awakening while lying in bed, 30 and 60 minutes after awakening (fasting), at night, at 8 pm. The salivary cortisol was assayed by enzyme immunoassay and the alpha-amylase by enzymatic automated method. The data were analyzed by Shapiro-Wilks test, descriptive statistics, Mann-Whitney test and Spearman coefficient (?=0.05). The area under the curve (AUCG) of salivary cortisol and amylase concentrations against time was calculated by trapezoid method respective to the ground level. There was no difference for salivary cortisol and sAA AUCG, neither for BMI between groups. The correlations between the two biomarkers were not significant for both groups. It was concluded that the levels of salivary cortisol and alpha-amylase were not altered in children and adolescents with TMD / Mestrado / Odontopediatria / Mestra em Odontologia

Data warehouse maintenance and maintenance cost has been well studied in the literature. Integrating data sources, in a data warehouse environment, may often need data cleaning, transformation, or any other function applied to the data in order to integrate it. The impact on view maintenance, when data is integrated with other comparison operators than defined in theta join, has, however, not been closely looked at in previous studies. In this study the impact of using a complex join in data warehouse environment is analyzed to measure how different maintenance strategies are affected when data needs to be integrated using other comparison operators than defined in a theta join. The analysis shows that maintenance cost is greatly increased when using complex joins since such joins often lack optimization techniques which are available when using a theta join. The study shows, among other things, that the join aware capability of sources is not of importance when performing complex joins, and incremental view maintenance is better approach than using recomputed view maintenance, when using complex joins. Strategies for maintaining data warehouses when data is integrated using a complex join are therefore different than when a theta join is used, and different maintenance strategies need to be applied.

Parallel processing is prevalent in many manufacturing and service systems. Many manufactured products are built and assembled from several components fabricated in parallel lines. An example of this manufacturing system configuration is observed at a manufacturing facility equipped to assemble and test web servers. Characteristics of a typical web server assembly line are: multiple products, job circulation, and paralleling processing. The primary objective of this research was to develop analytical approximations to predict performance measures of manufacturing systems with job failures and parallel processing. The analytical formulations extend previous queueing models used in assembly manufacturing systems in that they can handle serial and different configurations of paralleling processing with multiple product classes, and job circulation due to random part failures. In addition, appropriate correction terms via regression analysis were added to the approximations in order to minimize the gap in the error between the analytical approximation and the simulation models. Markovian and general type manufacturing systems, with multiple product classes, job circulation due to failures, and fork and join systems to model parallel processing were studied. In the Markovian and general case, the approximations without correction terms performed quite well for one and two product problem instances. However, it was observed that the flow time error increased as the number of products and net traffic intensity increased. Therefore, correction terms for single and fork-join stations were developed via regression analysis to deal with more than two products. The numerical comparisons showed that the approximations perform remarkably well when the corrections factors were used in the approximations. In general, the average flow time error was reduced from 38.19% to 5.59% in the Markovian case, and from 26.39% to 7.23% in the general case. All the equations stated in the analytical formulations were implemented as a set of Matlab scripts. By using this set, operations managers of web server assembly lines, manufacturing or other service systems with similar characteristics can estimate different system performance measures, and make judicious decisions - especially setting delivery due dates, capacity planning, and bottleneck mitigation, among others.

Presented master thesis focuses on comparison of total replacement with fixed polyethylene and replacement with dual mobility of trapeziometacarpal joint. Computational models consist of bones trapezium, trapezoid, first and second metacarpal and components of total replacements stem, neck, insert and cup. Replacements are compared on basis that how big force is transmitted from replacement to trapezium, contact pressures between neck and insert, equivalent elastic strains of bone tissue and lastly what is the influence of friction coefficient on results. Task was solved with finite element method in software ANSYS Workbench 19.2.

Thesis deals with individual technologies of packaging stator sheets and their use in practice. The greatest emphasis is placed on welding technologies, especially on the differences between the individual methods. The experimental part of the thesis is focused on finding suitable parameters for welding the stator package using a laser with a special wobling head. The samples were evaluated in terms of penetration depth, the number of defects, especially pores and grain coarsening.

The use of high-strength steel is more and more frequent in the car industry. I focused on USIBOR® 1500 steel welded by Nd-YAG laser. For my experiment, there were used various welding parameters and shielding gases. To compare the weld samples, I used the tensile, bending, macrostructure, microstructure and Vickers hardness test with different combinations of thickness as well as welded material.