In large observational studies, data are often highly multivariate with many discrete and continuous variables measured on each observational unit. One often derives subpopulations to facilitate analysis. Traditional approaches suggest modeling such subpopulations with a compilation of interaction effects. However, when many interaction effects define each subpopulation, it becomes easier to model membership in a subpopulation rather than numerous interactions. In many cases, subjects are not complete members of a subpopulation but rather partial members of multiple subpopulations. Grade of Membership scores preserve the integrity of this partial membership. By generalizing an analytic chemistry concept related to chromatography-mass spectrometry, we obtain a method that can identify latent subpopulations and corresponding Grade of Membership scores for each observational unit.

Submitted by Ricardo Cedraz Duque Moliterno (ricardo.moliterno@uefs.br) on 2015-09-16T23:54:46Z No. of bitstreams: 1 DISSETAC?O - Elizabete Silva de Jesus Lopes - 2013.pdf: 2904294 bytes, checksum: fa71e691cbbf19e2e1961ca5514f2120 (MD5) / Made available in DSpace on 2015-09-16T23:54:46Z (GMT). No. of bitstreams: 1 DISSETAC?O - Elizabete Silva de Jesus Lopes - 2013.pdf: 2904294 bytes, checksum: fa71e691cbbf19e2e1961ca5514f2120 (MD5) Previous issue date: 2013-03-20 / The casualization of labor is one of the main problems associated with globalization and the restructuring of production processes in the capitalist system. Contributes to change the characteristics of the labor and employment in general, and particularly in the health sector. This study aimed to evaluate the characteristics of the labor and employment of the Family Health Program (PSF), focusing on indicators of precarious work in Feira de Santana, Bahia in 2012. This is an epidemiological cohort study cross- exploratory- descriptive, with a random sample stratified by geographic location, occupational category and level of assistance. Applied to 1,041 workers structured municipal public questionnaire. For the types of characteristics of vulnerable employment and working on the indicators of precariousness used the Grade of Membership (GoM) method - degree of belonging. 3 profiles were generated : profile " 1 " , characterized by less vulnerable workers , but with lower incomes; Profile " 2 " marked by workers in poorer working conditions and employment profile " 3 " less vulnerable workers , but with low social support . Findings reveal the existence of different vulnerabilities on indicators of precarious work among groups of workers PSF. Suggested to different actions for each group of workers in order to desprecarizar conditions of employment. / A precariza??o do trabalho constitui um dos principais problemas associados ? globaliza??o e aos processos de reestrutura??o produtiva no sistema capitalista. Contribui para alterar as caracter?sticas do trabalho e emprego de forma geral, e em particular no setor sa?de. Este estudo teve por objetivo avaliar as caracter?sticas do trabalho e emprego do Programa de Sa?de da Fam?lia (PSF), com enfoque em indicadores de precariza??o do trabalho, no munic?pio de Feira de Santana, Bahia no ano de 2012. Trata-se de um estudo epidemiol?gico de corte transversal do tipo explorat?rio-descritivo, com amostra aleat?ria estratificada por ?rea geogr?fica, categoria profissional e n?vel de assist?ncia. Aplicou-se question?rio estruturado a 1.041 trabalhadores da rede p?blica municipal. Para obter as tipologias das caracter?sticas do emprego e trabalho vulner?veis quanto aos indicadores de precariza??o utilizou-se o m?todo Grade of Membership (GoM) - grau de pertencimento. Foram gerados 3 perfis: perfil "1", caracterizado por trabalhadores menos vulner?veis, por?m com baixos rendimentos; perfil "2? marcado por trabalhadores em piores condi??es de trabalho e emprego e perfil "3" trabalhadores menos vulner?veis, por?m com baixo suporte social. Os achados revelam a exist?ncia de diferentes vulnerabilidades referentes aos indicadores de precariza??o do trabalho entre os grupos de trabalhadores do PSF o que pode estar relacionado as condi??es de trabalho e emprego, a organiza??o dos servi?os e aos aspectos psicossociais do trabalho: demanda psicol?gicas advindas do trabalho, controle sobre o pr?prio trabalho, suporte social do chefe e dos colegas de trabalho. Sugere-se a??es diferenciadas para cada grupo de trabalhadores.

Made available in DSpace on 2014-12-17T14:23:32Z (GMT). No. of bitstreams: 1 ItaloMA_DISSERT.pdf: 1528964 bytes, checksum: 0f6c065c3cf9977bde43925f92cb8a28 (MD5) Previous issue date: 2013-08-29 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior / This work was developed in the research line: "The habitus of study: builder of a new reality in the basic education of metropolitan area Natal" which is being developed with the support of CAPES by the Centre for Education. Acts, especially the problem of academic performance of students in basic education of the public in the Metropolitan Region of Natal (RMN). Thus, the aim of this paper is to construct a typology of students in the 9th year of basic education, attending the public schools (state or municipal) of MRN, 2009, and assess, according to these profiles, what personal characteristics student and their families: economic, social and cultural capital as well as teaching practices create environments capable of favoring a good educational development as measured by the performance obtained in the assessments in mathematics and English language. The data used were provided through the microdata Brazil Exam 2009 held by INEP. We used the methods Grade of Membership (GoM) for construction of profiles relevance of students according to the characteristics already mentioned. With these profiles was verified, which were effectively generating good performance in school curriculum components evaluated. The findings indicate that students belonging to the profile considered good environment, able to achieve better school performance both in Portuguese as in Mathematics, compared to the extreme profiles and adverse deficit / Esta disserta??o foi desenvolvida na linha de pesquisa: O habitus de estudar: construtor de uma nova realidade na educa??o b?sica da regi?o metropolitana de Natal a qual est? sendo desenvolvida com o apoio da CAPES junto ao Observat?rio da Educa??o. Atua, especialmente, no problema do desempenho escolar dos alunos da educa??o b?sica da rede p?blica da Regi?o Metropolitana de Natal (RMN). Dessa forma, o objetivo central deste trabalho ? construir uma tipologia dos estudantes do 9? ano do ensino fundamental, que frequentavam a rede p?blica de ensino (estadual ou municipal) da RMN, 2009, e avaliar, segundo esses perfis, quais caracter?sticas pessoais do estudante e de seus familiares: econ?mica, social e de capital cultural, bem como de pr?ticas docentes; geram perfis (ambientes) capazes de favorecer um bom desenvolvimento educacional, avaliando-os atrav?s do desempenho obtido nas avalia??es de matem?tica e l?ngua portuguesa. Os dados utilizados foram os disponibilizados atrav?s dos microdados da Prova Brasil 2009 (SAEB), realizada pelo INEP. Utilizou-se o m?todo Grade of Membership (GoM) para constru??o dos perfis de pertin?ncia dos alunos segundo suas caracter?sticas. De posse desses perfis foi poss?vel verificar, quais efetivamente eram geradores de bons desempenhos escolares nos componentes curriculares avaliados. Os achados indicam que os alunos classificados no perfil considerado como de ambiente bom, conseguiram obter melhor desempenho escolar tanto em l?ngua portuguesa como em matem?tica, quando comparados com os perfis extremos adverso e deficit?rio

Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2017-11-03T21:04:00Z No. of bitstreams: 1 JoseEdsonFerreiraNunesJunior_DISSERT.pdf: 1755485 bytes, checksum: 020679df3231e313b90849a264cc7325 (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2017-11-17T22:50:53Z (GMT) No. of bitstreams: 1 JoseEdsonFerreiraNunesJunior_DISSERT.pdf: 1755485 bytes, checksum: 020679df3231e313b90849a264cc7325 (MD5) / Made available in DSpace on 2017-11-17T22:50:53Z (GMT). No. of bitstreams: 1 JoseEdsonFerreiraNunesJunior_DISSERT.pdf: 1755485 bytes, checksum: 020679df3231e313b90849a264cc7325 (MD5) Previous issue date: 2017-05-26 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES) / Segundo a Pesquisa Nacional por Amostra de Domic?lios (PNAD), de 1992 a 2009, a taxa de escolariza??o de jovens de 15 a 17 anos elevou-se de 59,7% para 85,2%. Ou seja, o per?odo de crescimento populacional brasileiro, juntamente com seu desenvolvimento social, acarretou no crescimento da popula??o escolar. Estes valores crescentes s? identificam a necessidade e a import?ncia de um olhar mais acentuado para os professores. Com a crescente demanda por ensino b?sico, o papel dos professores passa a se tornar cada vez mais complexos, com mais cabe?as para gerir e repassar seus ensinamentos. Tornou-se necess?rio a amplia??o do quadro docente para ser poss?vel o atendimento a toda a popula??o escolar. Ainda mais importante que a amplia??o do quadro docente, sua capacita??o e qualifica??o tamb?m devem ser ampliadas, visto que, em um futuro n?o t?o distante, a queda nas taxas de natalidade diminuir? a popula??o de jovens em idade escolar no Brasil. Assim, a alta quantidade de professores n?o ser? mais relevante, e sim as suas qualidades e habilidades profissionais. Dito isto, o presente trabalho est? voltado especificamente para os professores atuantes na rede b?sica de ensino no Brasil e suas caracter?sticas pessoais, profissionais e acad?micas, e como essas caracter?sticas afetam o desempenho de seus alunos. Dessa forma, o objetivo deste trabalho ? determinar o perfil de qualidade dos professores do 3? ano do ensino m?dio, que lecionam na rede p?blica estadual do Brasil, e qual a rela??o destes perfis com o desempenho escolar dos alunos. Os dados utilizados provem dos microdados da Prova Brasil 2013 (SAEB), realizada pelo INEP, que consiste de um question?rio individual, que engloba informa??es pessoais e acad?micas, aplicado a cada docente e aluno entrevistado. O m?todo Grade of Membership (GoM) foi utilizado para a constru??o dos perfis de pertin?ncia dos professores segundo suas caracter?sticas. De posse desses perfis verificou-se quais caracter?sticas docentes resultam de forma efetiva em bom desempenho de seus alunos no componente curricular avaliado. Os resultados indicam tr?s grupos de professores com caracter?sticas distintas: um grupo considerado de maior qualidade, outro grupo considerado de qualidade intermedi?ria, e o terceiro grupo classificado como de qualidade deficit?ria ou baixa qualidade. Para cada grupo delineado, o desempenho de seus alunos foi distinto, apresentando maior desempenho aqueles alunos associados a professores de alta qualidade, e menor desempenho os alunos com professores de baixa qualidade. / According to the Pesquisa Nacional por Amostras de Domic?lios (PNAD), from 1992 to 2009, the enrollment rate of young people aged 15 to 17 rose from 59.7% to 85.2%. That is, the period of Brazilian population growth, together with its social development, has led to the growth of the school population. These increasing values only identify the need and importance of a more pronounced look at teachers. With the increasing attendance of students in schools, the role of teachers becomes increasingly complex, with more heads to manage and pass on their teachings. It has become necessary to expand the teaching staff to be able to serve the entire school population. Even more important than the expansion of the teaching staff, their qualification and qualification should also be expanded, since in the not so distant future, the fall in birth rates will decrease the population of school-age youth in Brazil. Thus, the high number of teachers will not be more relevant, but their qualities and professional skills. By saying that, this work is aimed specifically at teachers working in the basic education in Brazil and their personal, professional and academic characteristics, and how these characteristics affect the performance of their students. Thus, the main objective of this work is to determine the quality profile of 3rd year public high school teachers, and what is the relation of these profiles and their student?s academic performances. The data used were made available through the microdata of Prova Brasil 2013 (SAEB), carried out by INEP. The Grade of Membership (GoM) method was used to construct the pertinence profiles of teachers according to their characteristics. In the possession of these profiles, it was verified which teacher?s characteristics resulted in an effective way in good performances of their students in the evaluated curricular component. The results indicate three groups of teachers with different characteristics: a group considered the to be the one with higher quality, another one classified as medium quality, and the last one classified as poor quality profile. For each group outlined, the performance of their students was distinct, presenting higher performance those students associated with high quality teachers, and lower performance students with poor quality teachers.

Mass spectrometry has been used extensively in recent years as a valuable tool in the study of proteomics. However, the data thus produced exhibits hyper-dimensionality. Reducing the dimensionality of the data often requires the imposition of many assumptions which can be harmful to subsequent analysis. The IP algorithm is a dimension reduction algorithm, similar in purpose to latent variable analysis. It is based on the principle of maximum entropy and therefore imposes a minimum number of assumptions on the data. Partial Least Squares (PLS) is an algorithm commonly used with proteomics data from mass spectrometry in order to reduce the dimension of the data. The IP algorithm and a PLS algorithm were applied to proteomics data from mass spectrometry to reduce the dimension of the data. The data came from three groups of patients, those with no tumors, malignant or benign tumors. Reduced data sets were produced from the IP algorithm and the PLS algorithm. Logistic regression models were constructed using predictor variables extracted from these data sets. The response was threefold and indicated which tumor classifications each patient belonged. Misclassification rates were determined for the IP algorithm and the PLS algorithm. The rates correct classification associated with the IP algorithm were equal or better than those rates associated with the PLS algorithm.