Submitted by Sandra Pereira (srpereira@ufrrj.br) on 2016-08-24T16:38:26Z No. of bitstreams: 1 2010 - Betty Nogueira Rocha.pdf: 5999791 bytes, checksum: 79ed446afee6be0f885174859be8ae99 (MD5) / Made available in DSpace on 2016-08-24T16:38:26Z (GMT). No. of bitstreams: 1 2010 - Betty Nogueira Rocha.pdf: 5999791 bytes, checksum: 79ed446afee6be0f885174859be8ae99 (MD5) Previous issue date: 2010-12-07 / Funda??o Carlos Chagas Filho de Amparo ? Pesquisa do Estado do RJ- - FAPERJ / The guiding thread of this analysis is the political of development outlined by the military government under the three editions of the National Development Plan (PND). One of the goals in context of these plans was to enable the colonization spaces demographically "empty" the country through the implementation of projects of colonization in the area that comprises the Legal Amazon acting as a stimulus to spontaneous migration and directing the flow of migration to the region. The goal of this study is to investigate and analyze the causal link between migration and development from a multidisciplinary view of the plots that tell the tragedies of migrants who settled in the border region. The case study was conducted in Lucas do Rio Verde, located in north of Mato Grosso, originating from a colonization project of the 1980s designed to resolve social tensions on the land that began to take a breath in Rio Grande do Sul. When provide voice to figures that fixed in that border is intended to analyze the dramas experienced and shared, and exposing the plots resulting from that process migration. The effort undertaken in this study was to investigate how to construct the representations of development in a frontier area. / O fio condutor desta an?lise ? a pol?tica de desenvolvimento tra?ada pelo governo militar no ?mbito das tr?s edi??es do Plano Nacional de Desenvolvimento (PND). Um dos objetivos no bojo destes Planos era possibilitar a coloniza??o dos espa?os demograficamente ?vazios? do territ?rio nacional atrav?s da implanta??o de projetos de coloniza??o na ?rea que compreende a Amaz?nia Legal servindo de est?mulo de migra??es espont?neas e direcionando o fluxo migrat?rio para a regi?o. O objetivo deste trabalho ? investigar e analisar o nexo causal entre migra??o e desenvolvimento sob um olhar multidisciplinar das tramas que informam os dramas dos migrantes que se fixaram naquela regi?o fronteiri?a. O estudo de caso foi realizado em Lucas do Rio Verde, cidade localizada no norte matogrossense, origin?ria de um projeto de coloniza??o da d?cada de 1980 elaborado para resolver as tens?es sociais por terra que come?avam a tomar f?lego no Rio Grande do Sul. Ao dar voz aos personagens que se fixaram naquela fronteira pretende-se analisar os dramas vivenciados e compartilhados e expor as tramas resultantes daquele processo migrat?rio. O esfor?o empreendido nesta pesquisa foi o de investigar como se constroem as representa??es de desenvolvimento numa ?rea de fronteira.

Made available in DSpace on 2014-12-17T13:53:34Z (GMT). No. of bitstreams: 1 MariaITM_DISSERT.pdf: 1350553 bytes, checksum: 48697460834d64c94a81cc553077f873 (MD5) Previous issue date: 2012-08-29 / This work aims to analyze risks related to information technology (IT) in procedures related to data migration. This is done considering ALEPH, Integrated Libray System (ILS) that migrated data to the Library Module present in the software called Sistema Integrado de Gest?o de Atividades Acad?micas (SIGAA) at the Zila Mamede Central Library at the Federal University of Rio Grande do Norte (UFRN) in Natal/Brazil. The methodological procedure used was of a qualitative exploratory research with the realization of case study at the referred library in order to better understand this phenomenon. Data collection was able once there was use of a semi-structured interview that was applied with (11) subjects that are employed at the library as well as in the Technology Superintendence at UFRN. In order to examine data Content analysis as well as thematic review process was performed. After data migration the results of the interview were then linked to both analysis units and their system register with category correspondence. The main risks detected were: data destruction; data loss; data bank communication failure; user response delay; data inconsistency and duplicity. These elements point out implication and generate disorders that affect external and internal system users and lead to stress, work duplicity and hassles. Thus, some measures were taken related to risk management such as adequate planning, central management support, and pilot test simulations. For the advantages it has reduced of: risk, occurrence of problems and possible unforeseen costs, and allows achieving organizational objectives, among other. It is inferred therefore that the risks present in data bank conversion in libraries exist and some are predictable, however, it is seen that librarians do not know or ignore and are not very worried in the identification risks in data bank conversion, their acknowledge would minimize or even extinguish them. Another important aspect to consider is the existence of few empirical research that deal specifically with this subject and thus presenting the new of new approaches in order to promote better understanding of the matter in the corporate environment of the information units / Este estudo se prop?e a analisar os riscos de tecnologia da informa??o (TI) decorrentes do processo de migra??o de dados do ALEPH para o m?dulo biblioteca do Sistema Integrado de Gest?o de Atividades Acad?micas (SIGAA) na Biblioteca Central Zila Mamede (BCZM), da Universidade Federal do Rio Grande do Norte (UFRN). Assim, os procedimentos metodol?gicos tra?ados constaram de uma pesquisa explorat?ria e qualitativa, com a realiza??o de um estudo de caso na BCZM para detalhar e compreender o fen?meno. O instrumento de coleta de dados utilizado foi a entrevista semiestruturada, aplicada a (11) onze sujeitos, lotados na Biblioteca e na Superintend?ncia de Inform?tica da UFRN. Para exame dos dados utilizou-se a an?lise de conte?do, mediante a t?cnica de an?lise tem?tica. Ap?s a transcri??o, os relatos foram relacionados ?s unidades de registro e ?s unidades de contexto correspondentes ?s categorias. Os principais riscos que emergiram na transfer?ncia dos sistemas foram: a destrui??o de dados; a perda de dados; a falha de comunica??o com banco de dados da Institui??o; paralisa??o parcial do sistema; a demora no tempo de resposta para o usu?rio; a inconsist?ncia de dados e a duplicidade de dados. Como implica??es constataram-se transtornos que afetam tanto os usu?rios externos quantos os usu?rios internos do sistema, ocasionando estresses, retrabalho e aborrecimentos. As medidas para a gest?o de riscos que surgiram com maior frequ?ncia foram: um bom planejamento, apoio da administra??o central e mais simula??es de testes pilotos. Para as vantagens dessa gest?o, tem-se a diminui??o de: riscos, ocorr?ncia de problemas e custos eventuais n?o previstos, al?m de possibilitar alcan?ar os objetivos organizacionais, entre outras. Infere-se, portanto, que os riscos na convers?o de base de dados em bibliotecas existem e alguns s?o previs?veis; no entanto, verificou-se que os bibliotec?rios desconhecem ou ignoram e n?o se preocupam em identific?-los, em uma convers?o de base de dados visando a minimiz?-los ou san?-los. Outro importante aspecto a considerar ? a exist?ncia de poucas pesquisas emp?ricas, voltadas especificamente para esse tema, havendo a necessidade de novas abordagens para elucid?-lo no ambiente corporativo das unidades de informa??o

Made available in DSpace on 2014-12-17T14:56:09Z (GMT). No. of bitstreams: 1 DesnesANR_DISSERT.pdf: 3501359 bytes, checksum: 5155a508018af1e52dae20205b8f726b (MD5) Previous issue date: 2012-12-21 / The seismic method is of extreme importance in geophysics. Mainly associated with oil exploration, this line of research focuses most of all investment in this area. The acquisition, processing and interpretation of seismic data are the parts that instantiate a seismic study. Seismic processing in particular is focused on the imaging that represents the geological structures in subsurface. Seismic processing has evolved significantly in recent decades due to the demands of the oil industry, and also due to the technological advances of hardware that achieved higher storage and digital information processing capabilities, which enabled the development of more sophisticated processing algorithms such as the ones that use of parallel architectures. One of the most important steps in seismic processing is imaging. Migration of seismic data is one of the techniques used for imaging, with the goal of obtaining a seismic section image that represents the geological structures the most accurately and faithfully as possible. The result of migration is a 2D or 3D image which it is possible to identify faults and salt domes among other structures of interest, such as potential hydrocarbon reservoirs. However, a migration fulfilled with quality and accuracy may be a long time consuming process, due to the mathematical algorithm heuristics and the extensive amount of data inputs and outputs involved in this process, which may take days, weeks and even months of uninterrupted execution on the supercomputers, representing large computational and financial costs, that could derail the implementation of these methods. Aiming at performance improvement, this work conducted the core parallelization of a Reverse Time Migration (RTM) algorithm, using the parallel programming model Open Multi-Processing (OpenMP), due to the large computational effort required by this migration technique. Furthermore, analyzes such as speedup, efficiency were performed, and ultimately, the identification of the algorithmic scalability degree with respect to the technological advancement expected by future processors / A s?smica ? uma ?rea de extrema import?ncia na geof?sica. Associada principalmente ? explora??o de petr?leo, essa linha de pesquisa concentra boa parte de todo o investimento realizado nesta grande ?rea. A aquisi??o, o processamento e a interpreta??o dos dados s?smicos s?o as partes que comp?em um estudo s?smico. O processamento s?smico em especial tem como objetivo ? obten??o de uma imagem que represente as estruturas geol?gicas em subsuperf?cie. O processamento s?smico evoluiu significativamente nas ?ltimas d?cadas devido ?s demandas da ind?stria petrol?fera, e aos avan?os tecnol?gicos de hardware que proporcionaram maiores capacidades de armazenamento e processamento de informa??es digitais, que por sua vez possibilitaram o desenvolvimento de algoritmos de processamento mais sofisticados, tais como os que utilizam arquiteturas paralelas de processamento. Uma das etapas importantes contidas no processamento s?smico ? o imageamento. A migra??o ? uma das t?cnicas usadas para no imageamento com o objetivo de obter uma se??o s?smica que represente de forma mais precisa e fiel as estruturas geol?gicas. O resultado da migra??o ? uma imagem 2D ou 3D na qual ? poss?vel a identifica??o de falhas e domos salinos dentre outras estruturas de interesse, poss?veis reservat?rios de hidrocarbonetos. Entretanto, uma migra??o rica em qualidade e precis?o pode ser um processo demasiadamente longo, devido ?s heur?sticas matem?ticas do algoritmo e ? quantidade extensa de entradas e sa?das de dados envolvida neste processo, podendo levar dias, semanas e at? meses de execu??o ininterrupta em supercomputadores, o que representa grande custo computacional e financeiro, o que pode inviabilizar a aplica??o desses m?todos. Tendo como objetivo a melhoria de desempenho, este trabalho realizou a paraleliza??o do n?cleo de um algoritmo de Migra??o Reversa no Tempo (RTM - do ingl?s: Reverse Time Migration), utilizando o modelo de programa??o paralela OpenMP (do ingl?s: Open Multi-Processing), devido ao alto esfor?o computacional demandado por essa t?cnica de migra??o. Al?m disso, foram realizadas an?lises de desempenho tais como de speedup, efici?ncia, e, por fim, a identifica??o do grau de escalabilidade algor?tmica com rela??o ao avan?o tecnol?gico esperado para futuros processadores

Submitted by Jorge Silva (jorgelmsilva@ufrrj.br) on 2017-07-26T19:01:24Z No. of bitstreams: 1 2015 - Thais Dias Luz Borges Santos.pdf: 1934931 bytes, checksum: 28e3fad5670af91cb1f6d74c40b37345 (MD5) / Made available in DSpace on 2017-07-26T19:01:24Z (GMT). No. of bitstreams: 1 2015 - Thais Dias Luz Borges Santos.pdf: 1934931 bytes, checksum: 28e3fad5670af91cb1f6d74c40b37345 (MD5) Previous issue date: 2015-03-31 / CNPq / This dissertation wants to contribute with the knowledge related to the way of life in the Sert?o of Northern Minas Gerais, bathed by the S?o Francisco River. It specifically this place we call Sert?o, their economic and social characteristics, as well as the strategies of its residents to stay at this place despite the difficulties of playing their way of life. Addresses also the question of the relevance of social programs in this process, notably the Family Grant Program. Uses elements of analysis of Jo?o Guimar?es Rosa literature related to this Sert?o of Rio S?o Francisco and the case of the Rural Sagrada Fam?lia Subdivision comes up to exemplify what permanence strategies, economic, cultural ties with the place and as forms of social recognition of the individuals in your group. / Esta disserta??o de mestrado visa contribuir para o conhecimento relacionado ao modo de vida no Sert?o do Norte de Minas Gerais banhado pelo Rio S?o Francisco. Trata especificamente desse lugar a que denominamos Sert?o, suas caracter?sticas econ?micas, sociais e culturais, bem como as estrat?gias de perman?ncia e reprodu??o social de seus moradores nesse lugar-sert?o, apesar das dificuldades de reprodu??o de seu modo de vida. Aborda, igualmente, a quest?o da relev?ncia dos programas sociais nesse processo, notadamente, o Programa Bolsa Fam?lia. Recorre a elementos de an?lise da literatura de Jo?o Guimar?es Rosa relacionado a esse Sert?o do Rio S?o Francisco e o caso do Bairro Rural Sagrada Fam?lia vem ? tona para exemplificar quais as estrat?gias de perman?ncia, as quest?es econ?micas, os v?nculos culturais com o lugar, bem como as formas de reconhecimento social dos indiv?duos em seu grupo.