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@PhDThesis{Leonor:2017:AmEsAl,
               author = "Leonor, Bruno Bustamante Ferreira",
                title = "Sentinel: ambiente e-science de alto desempenho para gerenciamento 
                         e monitoramento de aplica{\c{c}}{\~o}es cient{\'{\i}}ficas",
               school = "Instituto Nacional de Pesquisas Espaciais (INPE)",
                 year = "2017",
              address = "S{\~a}o Jos{\'e} dos Campos",
                month = "2017-08-11",
             keywords = "e-Science. HPC. containers. workflow cient{\'{\i}}fico. clima 
                         Espacial. e-Science. HPC. containers. scientific workflow. space 
                         weather.",
             abstract = "Mediante um paradigma de e-Science, a computa{\c{c}}{\~a}o vem 
                         revolucionando o modo como diversas {\'a}reas 
                         cient{\'{\i}}ficas conduzem suas pesquisas. Para realizar 
                         simula{\c{c}}{\~o}es/pesquisas, existem diversos sistemas que 
                         lidam com uma enorme quantidade de vari{\'a}veis que podem exigir 
                         v{\'a}rios c{\'a}lculos e recursos computacionais de alto 
                         desempenho. Entretanto, h{\'a} a necessidade de se lidar 
                         eventualmente com quest{\~o}es de interoperabilidade e 
                         execu{\c{c}}{\~a}o de workflows cient{\'{\i}}ficos caso a 
                         caso. Motivada pelo crescimento explosivo do volume de dados, 
                         abordagens em e-Science v{\^e}m sendo adotadas como apoio na 
                         resolu{\c{c}}{\~a}o de problemas pr{\'a}ticos e de pesquisa. A 
                         proposta desta pesquisa {\'e} a cria{\c{c}}{\~a}o de uma 
                         solu{\c{c}}{\~a}o de e-Science chamada Sentinel que permite a 
                         pesquisadores o gerenciamento e monitoramento de experimentos 
                         cient{\'{\i}}ficos. Isto fornece mecanismos que possibilitam a 
                         inclus{\~a}o de novas aplica{\c{c}}{\~o}es e total controle 
                         sobre todos os seus experimentos cadastrados, concentrando toda 
                         sua pesquisa em um s{\'o} lugar. As caracter{\'{\i}}sticas 
                         desejadas para o ambiente foram identificas a partir de um 
                         levantamento e compara{\c{c}}{\~a}o de diversas ferramentas 
                         utilizadas no meio cient{\'{\i}}fico e alguns 
                         apontamentos/cr{\'{\i}}ticas feitos por usu{\'a}rios. 
                         Atrav{\'e}s de um Portal Web, o Sentinel fornece um ambiente em 
                         nuvem para apoiar os pesquisadores em seus estudos que 
                         poder{\~a}o ser acessados atrav{\'e}s de qualquer dispositivo 
                         habilitado para acessar a web. Para eximir do pesquisador a 
                         necessidade de conhecimento do ambiente computacional a ser 
                         utilizado, seus experimentos s{\~a}o executados em uma plataforma 
                         de conteineriza{\c{c}}{\~a}o que trata os aspectos de 
                         interoperabilidade e concatena{\c{c}}{\~a}o de workflows 
                         cient{\'{\i}}ficos. A infraestrutura computacional utilizada 
                         para demonstra{\c{c}}{\~a}o deste projeto {\'e} 
                         constitu{\'{\i}}da basicamente de microcomputadores Raspberry Pi 
                         3 model B. Esta solu{\c{c}}{\~a}o {\'e} interessante pelo seu 
                         baixo custo e recursos oferecidos, podendo ser associados outros 
                         recursos de hardware sempre que necess{\'a}rio. Com um estudo de 
                         caso voltado ao Clima Espacial, o m{\'e}todo DFA (An{\'a}lise de 
                         Flutua{\c{c}}{\~a}o Destendenciada) foi aplicado {\`a}s medidas 
                         de irradia{\c{c}}{\~a}o solar (TSI) obtidas entre 1978 e 2012. O 
                         Clima Espacial foi escolhido devido {\`a} sua relev{\^a}ncia nas 
                         condi{\c{c}}{\~o}es e nos processos que ocorrem no espa{\c{c}}o 
                         que potencialmente afetam o ambiente pr{\'o}ximo {\`a} Terra, 
                         seres humanos e seus ativos tecnol{\'o}gicos. No Brasil, os 
                         estudos nesta {\'a}rea s{\~a}o dirigidos pelo programa EMBRACE 
                         (Estudos e Monitoramento Brasileiro do Clima Espacial) do INPE 
                         (Instituto Nacional de Pesquisas Espaciais). Durante a 
                         execu{\c{c}}{\~a}o dos experimentos criados dentro do estudo de 
                         caso proposto, o ambiente Sentinel apresentou-se consistente e 
                         est{\'a}vel entre as execu{\c{c}}{\~o}es locais e as 
                         conteinerizadas. Finalmente, a abordagem adotada {\'e} geral o 
                         bastante para ser estendida a outros dom{\'{\i}}nios de 
                         aplica{\c{c}}{\~a}o uma vez que permite a defini{\c{c}}{\~a}o 
                         pr{\'e}via de um workflow cient{\'{\i}}fico. ABSTRACT: Through 
                         an e-Science paradigm computing has revolutionized the way in 
                         which diverse scientific areas conduct their research. To perform 
                         simulations/surveys there are several systems that deal with a 
                         huge amount of variables that may require various calculations and 
                         high performance computational resources. However, there is a need 
                         to eventually address issues of interoperability and execution of 
                         scientific workflows on a case-by-case. Motivated by the explosive 
                         growth of data volume, approaches in e-Science have been adopted 
                         as support in solving practical and research problems. The 
                         proposal of this research is the creation of an e-Science solution 
                         called Sentinel that allows researchers to manage and monitor 
                         scientific experiments. This provides mechanisms that allow the 
                         inclusion of new applications and total control over all your 
                         registered experiments, concentrating all your research in one 
                         place. The characteristics desired for the environment were 
                         identified from a survey and comparison of several tools used in 
                         the scientific environment and some notes/criticisms made by 
                         users. Through a Web Portal, Sentinel provides a cloud environment 
                         to support researchers in their studies that can be accessed 
                         through any device enabled to access the web. In order to exempt 
                         the researcher from the need to know the computational environment 
                         to be used, his experiments are executed in a containerization 
                         platform that deals with the interoperability and concatenation 
                         aspects of scientific workflows. The computational infrastructure 
                         used to demonstrate this project consists basically of Raspberry 
                         Pi 3 model B microcomputers. This solution is interesting because 
                         of its low cost and features offered, and other hardware resources 
                         can be associated whenever necessary.With a case study focused on 
                         the SpaceWeather, the DFA method was applied to the measurements 
                         of solar irradiation (TSI) obtained between 1978 and 2012. The 
                         Space Weather was chosen because of its relevance in the 
                         conditions and processes that occur in space that potentially 
                         affect the environment close to Earth, humans and their 
                         technological assets. In Brazil, studies in this area are 
                         conducted by the EMBRACE (Brazilian Space Weather Studies and 
                         Monitoring) program of INPE (National Institute of Space 
                         Research). During the execution of the experiments created within 
                         the proposed case study, the Sentinel environment was consistent 
                         and stable between local and containerized executions. Finally, 
                         the approach adopted is general enough to be extended to other 
                         application domains since it allows the prior definition of a 
                         scientific workflow.",
            committee = "Stephany, Stephan (presidente) and Rosa, Reinaldo Roberto 
                         (orientador) and Santos, Walter Abrah{\~a}o dos (orientador) and 
                         Ferreira, Maur{\'{\i}}cio Gon{\c{c}}alves Vieira and Almeida, 
                         Eug{\^e}nio Sper de and Almeida, Luis Fernando de and Dantas, 
                         Murilo da Silva",
         englishtitle = "Sentinel: a high performance e-science environment for management 
                         and monitoring scientific applications",
             language = "pt",
                pages = "203",
                  ibi = "8JMKD3MGP3W34P/3PBTFSH",
                  url = "http://urlib.net/rep/8JMKD3MGP3W34P/3PBTFSH",
           targetfile = "publicacao.pdf",
        urlaccessdate = "29 nov. 2020"
}


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