Submitted by Elba Lopes (elba.lopes@fecap.br) on 2018-06-04T20:35:32Z No. of bitstreams: 2 Ricardo Gastardeli Yamamoto .pdf: 408105 bytes, checksum: 3e481c7b8a30df5f5411d52772739961 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) / Made available in DSpace on 2018-06-04T20:35:32Z (GMT). No. of bitstreams: 2 Ricardo Gastardeli Yamamoto .pdf: 408105 bytes, checksum: 3e481c7b8a30df5f5411d52772739961 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Previous issue date: 2018-02-27 / The objective of this study is to propose a typology of Finance content focused on entrepreneurial training in undergraduate courses. It is an exploratory research with qualitative data collection and the use of the Delphi technique, applied in two rounds with the participation of 27 specialists from the areas of Entrepreneurship and Finance. Among the findings, it was identified in order of relevance that the topics (i) Working capital, (ii) Management and projection of cash flows, (iii) Behavioral finance, (iv) Personal finance and entrepreneurship, (v) Risk management and (vi) Microcredit are among the most relevant contents for entrepreneurship training in Finance. The results of the research allow the following reflections: (i) the two most well-positioned contents in this study are also topics present in the literature and papers on the subject, (ii) the inclusion of new topics in the research exposed the relevance of contents until then still little explored, contributing with new perspectives and possibilities of studies on the subject. The findings of this study generate concrete recommendations for undergraduate-level Finance education programs. It is expected that this work will contribute by bringing to light a description of the current context of Finance education for entrepreneurship training and to provide educational institutions and professors a support to become more effective in teaching Finance for entrepreneurship training. / O objetivo deste estudo ?? propor uma tipologia de conte??dos de Finan??as voltada ?? forma????o empreendedora em cursos de gradua????o. Trata-se de uma pesquisa de natureza explorat??ria com levantamento qualitativo de dados e emprego da t??cnica Delphi, aplicada em duas rodadas com a participa????o de 27 especialistas das ??reas de Empreendedorismo e Finan??as. Entre os achados, identificou-se em ordem de relev??ncia que os t??picos (i) Capital de giro, (ii) Gerenciamento e proje????o de fluxos de caixa, (iii) Finan??as comportamentais, (iv) Finan??as pessoais e empreendedorismo, (v) Gerenciamento de risco e (vi) Microcr??dito figuram entre os conte??dos mais relevantes para a forma????o empreendedora em Finan??as. Os resultados da pesquisa permitem as seguintes reflex??es: (i) os dois conte??dos mais bem posicionados neste estudo tamb??m s??o t??picos presentes na literatura e trabalhos sobre a tem??tica, (ii) a inclus??o de novos t??picos na pesquisa exp??s a relev??ncia de conte??dos at?? ent??o ainda pouco explorados, contribuindo com novas perspectivas e possibilidades de estudos sobre o tema. Os achados deste estudo geram recomenda????es concretas para os programas de ensino de Finan??as em n??vel de gradua????o. Espera-se ainda que este trabalho contribua ao trazer ?? luz uma descri????o do atual contexto da educa????o em Finan??as para forma????o empreendedora e forne??a ??s institui????es de ensino e docentes, subs??dios para que se tornem mais eficazes no ensino de Finan??as para a forma????o empreendedora.

Made available in DSpace on 2014-12-17T14:07:11Z (GMT). No. of bitstreams: 1 PatriciaNM_DISSERT.pdf: 6134806 bytes, checksum: 48ee86ee041e8aea24a2f38fd4fbf43a (MD5) Previous issue date: 2013-03-01 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior / Synthetic inorganic pigments are the most widely used in ceramic applications because they have excellent chemical and thermal stability and also, in general, a lower toxicity to man and to the environment. In the present work, the ceramic black pigment CoFe2O4 was synthesized by the polymerization Complex method (MPC) in order to form a material with good chemical homogeneity. Aiming to optimize the process of getting the pigment through the MPC was used a fractional factorial design 2(5-2), with resolution III. The factors studied in mathematical models were: citric acid concentration, the pyrolysis time, temperature, time and rate of calcination. The response surfaces using the software statistica 7.0. The powders were characterized by thermal analysis (TG/DSC), x-ray diffraction (XRD), scanning electron microscopy (SEM) and spectroscopy in the UV-visible. Based on the results, there was the formation of phase cobalt ferrite (CoFe2O4) with spinel structure. The color of the pigments obtained showed dark shades, from black to gray. The model chosen was appropriate since proved to be adjusted and predictive. Planning also showed that all factors were significant, with a confidence level of 95% / Os pigmentos inorg?nicos sint?ticos s?o os mais utilizados em aplica??es cer?micas por apresentarem uma excelente estabilidade qu?mica e t?rmica e tamb?m, em geral, uma menor toxicidade para o homem e para o meio ambiente. No presente trabalho, o pigmento cer?mico preto CoFe2O4 foi sintetizado pelo M?todo de Polimeriza??o de Complexos (MPC) visando a forma??o de um material com boa homogeneidade qu?mica. Com o objetivo de otimizar o processo de obten??o do pigmento atrav?s do MPC foi utilizado um planejamento fatorial fracionado 2(5-2), com resolu??o III. Os fatores estudados na modelagem matem?tica foram: concentra??o de ?cido c?trico, tempo de pir?lise, temperatura, tempo e taxa de calcina??o. As superf?cies de resposta utilizando o programa statistica 7.0. Os p?s obtidos foram caracterizados atrav?s de an?lises t?rmicas (TG/DSC), difra??o de raios-x (DRX), microscopia eletr?nica de varredura (MEV) e espectroscopia na regi?o do UV-vis?vel. Com base nos resultados, foi verificada a forma??o da fase ferrita de cobalto (CoFe2O4) com estrutura espin?lio. A cor dos pigmentos obtidos apresentou tonalidades escuras, do preto ao cinza. O modelo escolhido foi adequado, visto que mostrou-se ajustado e preditivo. O planejamento tamb?m mostrou que todos os fatores foram significativos, com n?vel de confian?a em 95%

Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2016-10-11T20:48:07Z No. of bitstreams: 1 ErnestoCidBrasilDeMatos_TESE.pdf: 4062332 bytes, checksum: 09e4f284f102ad1088f37213e8e53d6f (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2016-10-14T00:17:49Z (GMT) No. of bitstreams: 1 ErnestoCidBrasilDeMatos_TESE.pdf: 4062332 bytes, checksum: 09e4f284f102ad1088f37213e8e53d6f (MD5) / Made available in DSpace on 2016-10-14T00:17:49Z (GMT). No. of bitstreams: 1 ErnestoCidBrasilDeMatos_TESE.pdf: 4062332 bytes, checksum: 09e4f284f102ad1088f37213e8e53d6f (MD5) Previous issue date: 2016-04-14 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES) / Sistemas de software esta?o presentes em grande parte das nossas vidas atualmente e, mais do que nunca, eles requerem um alto ni?vel de confiabilidade. Existem va?rias te?cnicas de Ver- ificac?a?o e Validac?a?o (V&V) de software que se preocupam com controle de qualidade, segu- ranc?a, robustez e confiabilidade; as mais conhecidas sa?o Testes de Software e Me?todos For- mais. Me?todos formais e testes sa?o te?cnicas que podem se complementar. Enquanto me?to- dos formais prove?em mecanismos confia?veis para raciocinar sobre o sistema em um ni?vel mais abstrato, te?cnicas de teste ainda sa?o necessa?rias para uma validac?a?o mais profunda e sa?o frenquentemente requeridas por orga?os de certificac?a?o. Levando isto em considerac?a?o, BETA prove? uma abordagem de testes baseada em modelos para o Me?todo B, suportada por uma ferramenta, que e? capaz de gerar testes de unidade a partir de ma?quinas abstratas B. Nesta tese de doutorado apresentamos melhorias realizadas em BETA e novos estudos de caso realizados para avalia?-la. Dentre as melhorias, integramos crite?rios de cobertura lo?gicos a? abordagem, revisamos os crite?rios de cobertura baseados em espac?o de entrada que ja? eram suportados e aperfeic?oamos as u?ltimas etapas do processo de gerac?a?o de testes. A abordagem agora suporta a gerac?a?o automa?tica de dados para os ora?culos e prea?mbulos para os casos de teste; ela tambe?m possui uma funcionalidade para concretizac?a?o dos da- dos de teste e um mo?dulo para gerar scripts de teste executa?veis automaticamente. Outro objetivo desta tese foi realizar estudos de caso mais complexos utilizando BETA e avaliar a qualidade dos casos de teste que a abordagem produz. Estes estudos de caso foram os primeiros a avaliar o processo de gerac?a?o de testes por completo, desde a especificac?a?o dos casos de teste ate? a sua implementac?a?o e execuc?a?o. Em nossos u?ltimos experimentos, analisamos a qualidade dos casos de teste gerados por BETA, considerando cada crite?rio de cobertura suportado, utilizando me?tricas de cobertuda de co?digo como cobertura de in- struc?o?es e ramificac?o?es. Tambe?m utilizamos testes de mutac?a?o para avaliar a capacidade dos casos de teste de detectar faltas na implementac?a?o dos modelos. O resultados obtidos foram promissores mostrando que BETA e? capaz de detectar faltas introduzidas por progra- madores ou geradores de co?digo e que a abordagem pode obter bons resultados de cobertura para a implementac?a?o de um sistema baseado em modelos B. / Software systems are a big part of our lives and, more than ever, they require a high level of reliability. There are many software Verification and Validation (V&V) techniques that are concerned with quality control, security, robustness, and reliability; the most widely known are Software Testing and Formal Methods. Formal methods and testing are techniques that can complement each other. While formal methods provide sound mechanisms to reason about the system at a more abstract level, testing techniques are still necessary for a more in-depth validation of the system and are often required by certification standards. Taking this into consideration, BETA provides a tool-supported, model-based testing approach for the B Method that is capable of generating unit tests from abstract B machines. In this thesis, we present improvements made in the BETA approach and tool, and new cases studies used to evaluate them. Among these improvements, we integrated logical coverage criteria into the approach, reviewed the input space criteria that was already supported, and enhanced the final steps of the test generation process. The approach now has support for automatic generation of oracle data and test case preambles, it has a feature for test data concretization, and a module that automatically generates executable test scripts. Another objective of this thesis was to perform more complex case studies using BETA and assess the quality of the test cases it produces. These case studies were the first to evaluate the test generation process as a whole, from test case design to implementation and execution. In our last experiments, we assessed the quality of the test cases generated by BETA, considering each coverage criteria it supports, using code coverage metrics such as statement and branch coverage. We also used mutation testing to evaluate the ability of the generated test cases to identify faults in the model?s implementation. The results obtained were promising, showing that BETA is capable of detecting faults introduced by a programmer or code generation tool and that it can achieve good coverage results for a system?s implementation based on a B model.

Incluir como ag?ncias financiadoras: Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES), Financiadora de Estudos e Projetos (FINEP) e Funda??o de Amparo ? Pesquisa do Estado de Minas Gerais (FAPEMIG). / Submitted by Jos? Henrique Henrique (jose.neves@ufvjm.edu.br) on 2018-02-07T21:39:03Z No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) marcelo_henrique_fernandes_ottoni.pdf: 3524322 bytes, checksum: c7675d522b34cfb2455e18dbca1699da (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2018-03-09T19:17:22Z (GMT) No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) marcelo_henrique_fernandes_ottoni.pdf: 3524322 bytes, checksum: c7675d522b34cfb2455e18dbca1699da (MD5) / Made available in DSpace on 2018-03-09T19:17:22Z (GMT). No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) marcelo_henrique_fernandes_ottoni.pdf: 3524322 bytes, checksum: c7675d522b34cfb2455e18dbca1699da (MD5) Previous issue date: 2017 / Conselho Nacional de Pesquisas (CNPq) / A presen?a de fluoresc?ncia interferente em uma dada amostra ? considerada como um importante problema em m?todos fluorim?tricos, devido ? poss?vel sobreposi??o espectral entre ela e a emiss?o fluorescente de sondas. Por isso, ? importante conhecer se h? fluoresc?ncia interferente em uma dada amostra e subst?ncias de interesse nas condi??es de trabalho pretendidas. No presente estudo, foi avaliada a presen?a de fluoresc?ncia interferente em linf?citos humanos ap?s o tratamento com extratos de tr?s diferentes plantas medicinais, sendo estas, objeto de estudo do nosso grupo de pesquisas. Os extratos s?o: o extrato etan?lico das partes a?reas de Ageratum fastigiatum, extrato etan?lico das partes a?reas de Eriosema campestre e o extrato etan?lico do caule de Pseudobrickellia brasiliensis. Foi coletado o sangue de tr?s volunt?rios para a separa??o das c?lulas mononucleares de sangue perif?rico, para a confec??o de culturas in vitro em meio RPMI devidamente suplementado. Foram feitas uma cultura controle n?o-tratada (CON), culturas tratadas com cada extrato em tr?s concentra??es diferentes, al?m de uma cultura de c?lulas tratadas com dimetilsulf?xido (DMSO), solvente usado na solubiliza??o dos extratos vegetais. As culturas celulares foram incubadas por 24 horas a 37 ?C e 5% de CO2. Ap?s esse per?odo, as c?lulas foram lavadas e avaliadas por citometria de fluxo ou por microscopia confocal. A presen?a de fluoresc?ncia interferente foi determinada com base em histogramas de intensidade de fluoresc?ncia feitos para oito intervalos de comprimento de onda distintos, tendo sido feitas an?lises quali e quantitativas dos dados. A fluoresc?ncia dos extratos vegetais e DMSO foram avaliadas isoladamente por fluorimetria, usando-se as mesmas concentra??es utilizadas para as culturas celulares. Atrav?s da citometria de fluxo, foi identificado que o tratamento de linf?citos com qualquer um dos tr?s extratos de plantas levou ao aparecimento de fluoresc?ncia interferente detect?vel em v?rias faixas de comprimento de onda. Culturas tratadas com DMSO n?o apresentaram fluoresc?ncia interferente. Pela fluorimetria foi visto que os extratos n?o emitem fluoresc?ncia, o que sugere que a fluoresc?ncia interferente foi induzida nas c?lulas ap?s intera??es entre elas e os extratos. Este estudo levanta precau??es que visam avaliar a poss?vel presen?a de fluoresc?ncia interferente em condi??es de trabalho, possibilitando evitar esse vi?s e aumentar a confiabilidade dos resultados. / Disserta??o (Mestrado) ? Programa de P?s-gradua??o em Ci?ncias Farmac?uticas, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2017. / The presence of interfering fluorescence in a given sample is considered as an important problem on fluorometric methods due to the possible spectral overlap between it and the fluorescent emission of probes. Therefore, it is important to know if there is interfering fluorescence in a given sample, as well as, in substances of interest, in the desired working conditions. In the present study, it was evaluated the presence of interfering fluorescence in human lymphocytes after the treatment with extracts from three different medicinal plants, being such plants the object of study of our research group. The extracts are: the ethanolic extract from the aerial parts of Ageratum fastigiatum, ethanolic extract from the aerial parts of Eriosema campestre and the ethanolic extract from the stem of Pseudobrickellia brasiliensis. Blood was collected from three volunteers to get the peripheral blood mononuclear cells, for in vitro culture preparation in properly supplemented RPMI medium. It was made an untreated control culture (CON), cultures treated with each extract at three different concentrations, and a culture of cells treated with dimethylsulfoxide (DMSO), the solvent used in the plant extracts solubilization. Cell cultures were incubated for 24 hours at 37?C and 5% CO2. After that, cells were washed and evaluated by flow cytometry or by confocal microscopy. The presence of interfering fluorescence was determined based on making fluorescence intensity histograms at eight wavelength ranges for each cell culture. Qualitative and quantitative data analyzes were performed with those graphs. Plant extracts and DMSO fluorescences were evaluated by fluorometry, using the same concentrations used for the cell cultures. In flow cytometry results, it was identified that the treatment of lymphocytes with any of the three plant extracts led to the appearance of interfering fluorescence detectable in several wavelength ranges. Cultures treated with DMSO showed no interfering fluorescence. By fluorometry it was seen that the extracts are not fluorescent, which suggests that the interfering fluorescence was induced in the cells by interactions between them and the extracts. This study raises precautions to evaluate the possible presence of interfering fluorescence in working conditions, making possible to avoid this bias and increase the results reliability.

VANTI, Nadia. Links hipertextuais na comunica??o cient?fica: an?lise webom?trica dos s?tios acad?micos latino-americanos em Ci?ncias Sociais. Porto Alegre, 2007. 292 f. Tese (Doutorado em Comunica??o e Informa??o) ? Universidade Federal do Rio Grande do Sul. Porto Alegre, 2007. / Submitted by Francisco de Assis Ara?jo (franciscodebibufrn@gmail.com) on 2010-09-27T14:38:01Z No. of bitstreams: 1 2007Tese_NadiaAV.pdf: 1163860 bytes, checksum: 8ab926cb12983c17f9d167c6ee6b509c (MD5) / Approved for entry into archive by clediane guedes(clediane@bczm.ufrn.br) on 2010-09-29T18:20:01Z (GMT) No. of bitstreams: 1 2007Tese_NadiaAV.pdf: 1163860 bytes, checksum: 8ab926cb12983c17f9d167c6ee6b509c (MD5) / Made available in DSpace on 2010-09-29T18:20:01Z (GMT). No. of bitstreams: 1 2007Tese_NadiaAV.pdf: 1163860 bytes, checksum: 8ab926cb12983c17f9d167c6ee6b509c (MD5) / RESUMO Os principais objetivos deste estudo s?o a investiga??o do campo da webometria, definindo o lugar que esta ocupa dentro da Ci?ncia da Informa??o e o seu inter-relacionamento com os tradicionais campos das m?tricas (bibliometria, cientometria e informetria), assim como a an?lise dos fluxos da informa??o na Web, mediante a aplica??o de diferentes indicadores webom?tricos aos s?tios dos centros filiados ao Conselho Latino-Americano de Ci?ncias Sociais (CLACSO). Os indicadores webom?tricos utilizados s?o: Tamanho do S?tio, Visibilidade, Luminosidade, Fator de Impacto Web, Densidade por Link e Densidade da Rede. O foco de an?lise ? o estudo dos links enquanto fontes de informa??o e como instrumentos de conex?o que influenciam e s?o influenciados pelos v?nculos acad?micos neste ambiente. Para a extra??o, quantifica??o e representa??o gr?fica dos dados s?o utilizados motores de busca (Google, Yahoo e Alta Vista), programas mapeadores (Xenu Link Steuth) e programas de an?lise e visualiza??o de redes (Ucinet 5 e Netdraw). Os resultados obtidos indicam que a informetria deve ser entendida como o campo maior que compreende n?o s? a bibliometria e a cientometria, mas tamb?m campos emergentes como a cibermetria e a webometria. Apresenta-se a posi??o de que a webometria n?o est? totalmente absorvida pela bibliometria, j? que a informa??o no meio digital n?o pode ser considerada como informa??o ?registrada? e sim como ?dispon?vel? em meio eletr?nico, havendo a necessidade de uma maior reflex?o te?rica para abrigar novos conceitos que surgem com a influ?ncia das inova??es tecnol?gicas no pensar e no fazer da Ci?ncia da Informa??o. A aplica??o dos indicadores webom?tricos demonstra que o Fator de Impacto da Web e Densidade por Link n?o oferecem resultados satisfat?rios. J? os demais indicadores demonstram sua utilidade e relev?ncia na mensura??o dos dados coletados na Web e nos processos de identifica??o e an?lise dos padr?es do fluxo da informa??o e inter- relacionamento entre institui??es acad?micas dentro do mundo virtual. O estudo demonstra tamb?m que a maioria dos s?tios latino-americanos de ci?ncias sociais estabelece poucas rela??es com outros centros do mesmo pa?s e de outros paises da regi?o na Web, o que se traduz em uma densidade de rede em geral bastante baixa e deixa em evid?ncia o importante potencial de conectividade a ser explorado no futuro pelo CLACSO e pelos seus centros membros. ABSTRACT: The main propose of this study is to research the field of webometrics, and define its role within Information Science and its relation with traditional metric fields (bibliometrics, scientometrics and informetrics). Also, by applying different webometric indicators to the sites of centers affiliated to the Latin American Council of Social Sciences (CLACSO), this study analyzes the information flows that occur inside the Web. The webometric indicators utilized are: Site Size, Visibility, Luminosity, Web Impact Factor, Link Density and Network Density. The analysis focuses mainly on an examination of links. These are regarded as sources of information and as instruments of connection that influence scholarly relationships within this virtual environment, at the same time being influenced by those relationships. Search engines such as Google, Yahoo and Alta Vista, link checking software such as Xenu Link Steuth, and programs for analysis and visualization of large networks such as Ucinet 5 and Netdraw are utilized for data collection, quantification and graphic representation of data. The results obtained indicate that infometrics has to be understood as a large field to include not only bibliometrics and scientometrics, but also emergent fields such as cybermetrics and webometrics. According to this research, webometrics should not be completely absorbed by bibliometrics, because the information in this digital environment cannot be considered as ?recorded.? Instead, this information should be seen as ?available? in electronic support. Therefore, it is necessary to think about a broader theoretical framework that allows us to include the new concepts that come out with the influence of technological innovations on the thinking and the makings of Information Science. The application of webometric indicators demonstrates that Link Density and the Web Impact Factor are insufficient. On the other hand, the other indicators stand out as useful, and are relevant tools to the measurement of data collected in the Web, as well as to the processes of information flows and to the interrelation among scholarly institutions inside the virtual world. This study also demonstrates that most of Latin American social sciences websites establish very few connections with the websites of other centers of the same country or region, which is reflected on a relatively low Network Density and emphasizes the enormous potential of connectivity as an area to be developed in the future by CLACSO and its member centers

Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2016-07-25T19:35:27Z No. of bitstreams: 1 ThuanyPatriciaCostaDeLima_DISSERT.pdf: 12184992 bytes, checksum: 65b052eef0c8113f7e14df3c3a40604b (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2016-08-01T20:48:43Z (GMT) No. of bitstreams: 1 ThuanyPatriciaCostaDeLima_DISSERT.pdf: 12184992 bytes, checksum: 65b052eef0c8113f7e14df3c3a40604b (MD5) / Made available in DSpace on 2016-08-01T20:48:43Z (GMT). No. of bitstreams: 1 ThuanyPatriciaCostaDeLima_DISSERT.pdf: 12184992 bytes, checksum: 65b052eef0c8113f7e14df3c3a40604b (MD5) Previous issue date: 2015-09-25 / Ag?ncia Nacional do Petr?leo - ANP / O objetivo deste estudo foi caracterizar a express?o estrutural-geof?sica do Lineamento Transbrasiliano na por??o centro-leste da Bacia do Parna?ba. O Lineamento Transbrasiliano (LTB) corresponde a uma megazona de cisalhamento de idade neoproterozoica (Ciclo Brasiliano), com dire??o NE-SW e cinem?tica transcorrente dextral, ocorrendo subjacente (e exposta lateralmente nas bordas NE e SW) ? se??o sedimentar da Bacia do Parna?ba. No presente trabalho, a interpreta??o dos mapas de anomalias gravim?trica e magn?tica ? analisada face a essa cinem?tica do LTB, sendo que a assinatura das anomalias geof?sicas corresponde ?s etapas de evolu??o brasiliana a tardi-brasiliana, de temperatura alta e declinante. Verifica-se que o padr?o das anomalias gravim?tricas residuais ? compat?vel com um par S-C dextral, moldando os corpos geol?gicos do embasamento heterog?neo. As bandas C, com dire??o NE, devem ser constitu?das por fatias de gnaisses e granulitos (anomalias positivas), rochas gran?ticas ou metassedimentares de baixo grau e grabens pr?-silurianos em estilo pull-apart (anomalias negativas). J? as anomalias de tra?os curvil?neos no mapa gravim?trico identificam trends contracionais (de superf?cies S), incompat?veis com a sua interpreta??o como um graben pr?-siluriano, restando as demais alternativas citadas. No tocante ? interpreta??o dos trends no mapa de anomalias magn?ticas (reduzidas ao polo), a maior parte destes ? tentativamente associada a falhas ou zonas de cisalhamento de baixa temperatura (planos C), delimitando blocos distintos em termos de propriedades magn?ticas, e/ou preenchidas por corpos b?sicos. ? tamb?m poss?vel que algumas anomalias magn?ticas isoladas/pontuais correspondam a corpos ?gneos de idade tardi-brasiliana ou mesozoicos. A configura??o desses lineamentos no embasamento pode ser interpretada em analogia ao modelo de fraturas de Riedel, assumindo planos de mergulho acentuado e com se??o de movimento sub-horizontal. Nesta disserta??o, s?o tamb?m exploradas interpreta??es relativas a modelagens gravim?tricas 2D combinadas com a interpreta??o de uma linha s?smica dip ao Lineamento Transbrasiliano. A se??o de rochas equivalente ao Grupo Jaibaras mostrou anomalias gravim?tricas discretas da bacia, conferindo assim uma maior influ?ncia ?s estruturas do embasamento nas respostas gravim?tricas. A delimita??o dos grabens sotopostos ? se??o paleozoica da bacia sofre restri??es causadas pelas heterogeneidades e anisotropia do embasamento. / The objective of this study was to characterize the structural-geophysical expression of the Transbrasiliano Lineament (TBL) in the east-central portion of the Parna?ba Basin. The TBL corresponds to a major Neoproterozoic NE-trending shear zone related to the Brasiliano orogenic cycle, with dextral strike-slip kinematics, underlying (but also laterally exposed in the NE and SW basin edges) the sedimentary section of the Parna?ba Basin. In this study, the interpretation of gravity and magnetic anomaly maps is consistent with the TBL kinematics, the signature of the geophysical anomalies corresponding to the high (plastic behaviour) and subsequent declining temperature (ductile to brittle behaviour) stages during Brasiliano and late Brasiliano times. The pattern of residual gravity anomalies is compatible with an S-C dextral pair shaping the geological bodies of an heterogeneous basement, such as slices of gneisses and granulites (positive anomalies), granitic and low-medium grade metasedimentary rocks (negative anomalies). Such anomalies curvilinear trends, ranging from NNE (interpreted as S surfaces) to NE (C surfaces), correspond to flattening surfaces (S), while the NE rectilinear trend must represent a C band. The narrower magnetic anomalies also display NNE to NE (S surfaces) trends and should correspond to similar (although narrower and more discontinuous) sources in the equivalent anomaly patterns. Pre-Silurian pull-apart style grabens may contribute to the NE negative gravimetric anomalies, although this interpretation demands control by seismic data analysis. On the other hand, the curvilinear anomalies associated to contractional trends are incompatible with their interpretation as pre-Silurian graben, in both maps. In the (reduced to the pole) magnetic anomalies map, most of these are again associated to low-temperature shear zones (C planes) and faults, juxtaposing distinct blocks in terms of magnetic properties, or eventually filled with basic bodies. It is also possible that some isolated magnetic anomalies correspond to igneous bodies of late-Brasiliano or Mesozoic age. The basement late discontinuities pattern can be interpreted in analogy to the Riedel fractures model, with steep dipping surfaces and a sub-horizontal movement section. This study also explored 2D gravity modeling controlled by the interpretation of a dip seismic line as regards to the Transbrasiliano Lineament. The rock section equivalent to the Jaibaras Group occupying a graben structure (as identified in the seismic line) corresponds to a discrete negative anomaly superimposed to a gravimetric high, once again indicating a stronger influence of older crystalline basement rocks as gravimetric sources, mainly reflecting the heterogeneities and anisotropies generated at high temperature conditions and their subsequent cooling along the TBL, during the Brasiliano cycle.

Made available in DSpace on 2014-12-17T14:53:18Z (GMT). No. of bitstreams: 1 PauloRCB.pdf: 649782 bytes, checksum: 7b869bb155abf3578ea09e633db4f807 (MD5) Previous issue date: 2006-05-19 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior / This work presents a study in quality of health care, with focus on consulting appointment. The main purpose is to define a statistical model and propose a quality grade of the consulting appointment time. The time considered is that from the day the patient get the appointment done to the day the consulting is realized. It is used reliability techniques and functions that has as main characteristic the analysis of data regarding the time of occurrence certain event. It is gathered a random sample of 1743 patients in the appointment system of a University Hospital - the Hospital Universit?rio Onofre Lopes - of the Federal University of Rio Grande do Norte, Brazil. The sample is randomly stratified in terms on clinical specialty. The data were analyzed against the parametric methods of the reliability statistics and the adjustment of the regression model resulted in the Weibull distribution being best fit to data. The quality grade proposed is based in the PAHO criteria for a consulting appointment and result that no clinic got the PAHO quality grade. The quality grade proposed could be used to define priority for improvement and as criteria to quality control / Este trabalho apresenta um estudo sobre qualidade em servi?os de sa?de, com enfoque para o atendimento ambulatorial. Determinar o melhor modelo estat?stico e a proposi??o de um padr?o de qualidade para o tempo agendado para consulta ambulatorial, ? o objetivo do presente estudo. Para isso, foram utilizadas as t?cnicas de confiabilidade que tem como principal caracter?stica a an?lise de dados referente ao tempo de ocorr?ncia de determinado evento. Observou-se dados de 1.743 pacientes que agendaram consulta no Hospital Universit?rio Onofre Lopes - Natal/RN, onde coletou-se informa??es referentes ao tipo de tratamento, especialidade, tipo de marca??o e o tempo at? o atendimento ambulatoria1. Os dados foram analisados segundo os m?todos n?o param?tricos da estat?stica de confiabilidade e atrav?s do ajuste do modelo de regress?o. Concluiu-se que as covari?veis que influenciam o tempo at? o atendimento ambulatorial ? o tipo de marca??o e a especialidade, o modelo que melhor se adequa aos dados ? o Weibull e 20,83% das especialidades enquadram-se no padr?o B de qualidade, sendo este o melhor padr?o obtido

Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2017-02-02T12:43:27Z No. of bitstreams: 1 JerbesonDeMeloSantana_DISSERT.pdf: 783968 bytes, checksum: 867f9ad936c5adb69bb954b107ba3e2d (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2017-02-07T19:13:20Z (GMT) No. of bitstreams: 1 JerbesonDeMeloSantana_DISSERT.pdf: 783968 bytes, checksum: 867f9ad936c5adb69bb954b107ba3e2d (MD5) / Made available in DSpace on 2017-02-07T19:13:20Z (GMT). No. of bitstreams: 1 JerbesonDeMeloSantana_DISSERT.pdf: 783968 bytes, checksum: 867f9ad936c5adb69bb954b107ba3e2d (MD5) Previous issue date: 2015-04-16 / ? apresentado um novo m?todo para o mapeamento aproximado da resistividade em subsuperf?cie usando uma abordagem geoestat?stica. S?o utilizados os pontos caracter?sticos (PCs) de uma sondagem de resistividade, que s?o os seus pontos de inflex?o e de extremos (m?ximos e m?nimos). O m?todo consiste basicamente de quatro etapas: i) suavizar ou interpolar as sondagens el?tricas, ii) obter os PCs usando as vers?es suavizadas das sondagens el?tricas, bem como obter as estimativas pontuais para a resistividade em subsuperf?cie usando rela??es emp?ricas entre os espa?amento de eletrodo e profundidade, iii) calcular os semivariogramas associados ?s estimativas pontuais de resistividade, e ajustar os mesmos a um modelo de semivariograma te?rico, e, finalmente, iv) estimar a distribui??o da resistividade em subsuperf?cie por krigagem utilizando as estimativas pontuais. N?o ? feita nenhuma hip?tese sobre a resistividade verdadeira e, como resultado, o m?todo ? robusto ? dimens?o do modelo e pode ser implementado para qualquer dimens?o. Computacionalmente, o m?todo ? muito r?pido porque nenhuma modelagem (direta ou inversa) ? realizada e o custo computacional ? apenas o da krigagem. Dada a sua robustez a erros de medi??o e ? dimens?o do modelo, o m?todo pode ser implementado como uma t?cnica r?pida e autom?tica de interpreta??o. A distribui??o de resistividade estimada tem valor tanto como um objeto de interpreta??o quanto como um modelo inicial de melhor qualidade para inicializar os algoritmos de invers?o. Neste ?ltimo uso, cerca de 30% a 40% das itera??es podem ser poupadas em compara??o com a inicializa??o com o semiespaco homog?neo, para o caso dos algoritmos de invers?o 2D que incorporam a restri??o de suavidade. O desempenho do m?todo ? demonstrado com aplica??es com dados 2D sint?ticos e reais no arranjo Schlumberger. A abordagem proposta pode ser generalizada para outras m?todos de resistividade DC e m?todos eletromagn?ticos que se baseiam em sondagens de resistividade. / It is presented a new method for the approximate mapping of the subsurface resistivity based on a geostatistical approach. It are used the characteristic points (CPs) of a resistivity sounding, which are their inflection and extreme (maximum and minimum) points. The methodology consists basically of four stages: i) smoothing the geoelectric soundings to assure robusteness to measurement errors, ii) determining the CPs from the smoothed versions of the geoelectric soundings, and obtaining from the CPs point estimates for the subsurface resistivity using empirical relations between electrode spacing and depth, iii) calculating semivariograms associated to the point estimates, and fitting them to a semivariogram model, and finally iv) estimating the subsurface resistivity distribution by kriging interpolation of the point estimates. No assumptions are made about the true subsurface resistivity and, as result, the method is robust to the model dimension and can be implemented for any dimension. Computationally, the method is very fast because no modeling (either direct or inverse) is demanded and the most intensive computer operation is just a kriging interpolation. Given its robustness to measurement errors and model dimension, it can be implemented as a fast automatic method of interpretation. The estimated resistivity distribution has value both as an object to interpret and as a better initial model for inversion algorithms. In the latter use, about 30%-40% of the iterations can be saved when compared with initializations with the homogeneous semispace, for 2D algorithms incorporating the classic smoothness constraint, for example. The method?s performance is demonstrated with applications with 2D Schlumberger array data both for synthetic and real cases. The proposed method might be generalized for other DC-resistivity arrays and electromagnetic techniques based on apparent resistivity soundings.

Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2017-02-13T20:18:37Z No. of bitstreams: 1 JosimaraTatianeDaSilva_DISSERT.pdf: 1557682 bytes, checksum: fac59260c784cbb83579953ae2c457f9 (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2017-02-16T19:30:20Z (GMT) No. of bitstreams: 1 JosimaraTatianeDaSilva_DISSERT.pdf: 1557682 bytes, checksum: fac59260c784cbb83579953ae2c457f9 (MD5) / Made available in DSpace on 2017-02-16T19:30:20Z (GMT). No. of bitstreams: 1 JosimaraTatianeDaSilva_DISSERT.pdf: 1557682 bytes, checksum: fac59260c784cbb83579953ae2c457f9 (MD5) Previous issue date: 2016-07-19 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES) / Este trabalho tem por objetivo investigar o comportamento de converg?ncia do m?todo GMRES (Generalized Minimal RESidual) e sua vers?o GMRES(m), sem e com precondicionador ILU(0) aplicado ? sistemas lineares n?o sim?tricos esparsos. Nosso interesse principal ? verificar se o comportamento destes algoritmos pode ser influenciado pela estrutura das matrizes consideradas, em particular, as Z-matrizes e a influ?ncia da escolha do grau de esparsidade. Entre os par?metros observados, concentramos no raio espectral dessas matrizes, tanto como a norma do res?duo relativo obtido por estes algoritmos. / This study aims to investigate the convergence behavior of the GMRES (Generalized Minimal Residual) method and its version GMRES(m), without and with preconditioner ILU(0) applied to sparse non-symmetric linear systems. Our main interest is to see if the behavior of these algorithms can be influenced by the structure of the matrices considered, in particular, the Z-matrices. Furthermore, the influence of the choice of the degree of sparsity. Among the observed parameters, we focus on the spectral radius of these matrices, as well as the relative residual norm obtained by these algorithms.

Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2017-02-20T21:14:32Z No. of bitstreams: 1 RobsonPauloDaSilva_DISSERT.pdf: 13158742 bytes, checksum: 0a1b1bd60f390902c7d125d1b1dc0d4a (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2017-02-23T20:20:51Z (GMT) No. of bitstreams: 1 RobsonPauloDaSilva_DISSERT.pdf: 13158742 bytes, checksum: 0a1b1bd60f390902c7d125d1b1dc0d4a (MD5) / Made available in DSpace on 2017-02-23T20:20:51Z (GMT). No. of bitstreams: 1 RobsonPauloDaSilva_DISSERT.pdf: 13158742 bytes, checksum: 0a1b1bd60f390902c7d125d1b1dc0d4a (MD5) Previous issue date: 2016-08-26 / M?todos ?geis tornaram-se uma forma de desenvolvimento predominante, sendo praticados em larga escala na ind?stria e objeto de grande interesse cient?fico pela comunidade acad?mica. Apesar de qualidades reconhecidas pelos praticantes e pela academia, existem alguns pontos de fraqueza em que os M?todos ?geis poderiam se beneficiar de solu??es mais conservadoras, importadas dos m?todos tradicionais. Como, por exemplo, situa??es em que ocorre a perda da mem?ria coletiva devido ? alta rotatividade de pessoal, ou a mudan?a do desenvolvimento de onshore para offshore. Uma destas solu??es que pode trazer muitos benef?cios para os processos ?geis de desenvolvimento ? o emprego de Rastreabilidade para apoiar a gest?o de projetos. O objetivo deste trabalho ? apresentar um modelo de refer?ncia de rastreabilidade no ?mbito de gest?o de projetos em M?todos ?geis e mostrar como aplic?-lo em um contexto real. Para construir este modelo foi feita uma revis?o da literatura, na qual foram buscadas entidades de refer?ncia que representam conceitos, necessidades de informa??o, reconhecidos pela comunidade cient?fica como importantes para o rastreamento de requisitos, al?m daqueles relacionados a projetos ?geis. Estes conceitos foram empregados na an?lise dos dados de projetos de software de uma grande corpora??o, para identificar problemas tais como: falta de testes; inconsist?ncias na instancia??o dos processos; defici?ncias na gest?o dos projetos e; incoer?ncias entre as Hist?rias de Usu?rio e seus detalhamentos. / Agile methods have become a predominant form of development, being practiced on a large scale in the industry and object of great scientific interest in the academic community. Despite its many qualities recognized by practitioners and the academia, there are some points of weakness on what Agile Methods could benefit from more conservative solutions, imported from the traditional methods, for example, situations in which there is loss of collective memory due to high staff turnover, or changing the development of onshore to offshore. One of these solutions that can bring many benefits to the agile development process is the use of traceability to support project management in Agile Methods. The aim of this paper is to present a traceability reference model for Agile methods project management scope and show how to apply it in a real context. To build this model a literature review was conducted, in which reference entities were sought representing concepts, information needs, recognized by the scientific community as important for traceability requirements in addition to those related to Agile projects. These concepts were used in the construction of a traceability reference model whose usefulness was evaluated in the extraction of software project management information of a large corporation. Used to identify problems such as lack of testing; inconsistencies in the instantiation of processes; deficiencies in the management of projects and; inconsistencies between the User Stories and his detailing.