Spelling suggestions: "subject:"modelo h?árido"" "subject:"modelo h?bride""
1 |
Cloud query manager: uso de web sem?ntica para evitar o problema de aprisionamento em IaaS / Cloud query manager: using semantic web to avoid IaaS cloud lock-inSouza, Arthur Emanoel C?ssio da Silva e 28 January 2015 (has links)
Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2016-03-31T22:29:13Z
No. of bitstreams: 1
ArthurEmanoelCassioDaSilvaESouza_DISSERT.pdf: 1480067 bytes, checksum: 15c2cf114fae56a6c186a5417cecb57f (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2016-04-04T19:16:06Z (GMT) No. of bitstreams: 1
ArthurEmanoelCassioDaSilvaESouza_DISSERT.pdf: 1480067 bytes, checksum: 15c2cf114fae56a6c186a5417cecb57f (MD5) / Made available in DSpace on 2016-04-04T19:16:06Z (GMT). No. of bitstreams: 1
ArthurEmanoelCassioDaSilvaESouza_DISSERT.pdf: 1480067 bytes, checksum: 15c2cf114fae56a6c186a5417cecb57f (MD5)
Previous issue date: 2015-01-28 / A computa??o em nuvem pode ser definida como um modelo computacional
distribu?do atrav?s do qual s?o compartilhados recursos (hardware, armazenamento,
plataformas de desenvolvimento e comunica??o) na forma de servi?os pagos e acess?veis com
um esfor?o m?nimo de gest?o e intera??o. Um grande benef?cio desse modelo ? possibilitar a
utiliza??o de variados provedores (i.e. uma arquitetura multiplataforma) para compor um
conjunto de servi?os no intuito de obter uma configura??o ?tima em desempenho e custo.
Entretanto, a utiliza??o multiplataforma ? impossibilitada pelo problema de cloud lock-in. O
cloud lock-in ? a depend?ncia entre uma aplica??o e uma plataforma de nuvem. Ele ?
comumente endere?ado por tr?s estrat?gias: (i) uso de camada intermedi?ria que se interp?e
aos consumidores de servi?os de nuvem e o provedor, (ii) uso de interfaces padronizadas para
acesso a nuvem, ou ainda (iii) uso de modelos com especifica??es abertas. Este trabalho
define uma abordagem para avaliar estas estrat?gias. Tal abordagem foi executada e
observou-se que apesar dos avan?os conseguidos por estas estrat?gias, nenhuma delas resolve
efetivamente o problema do cloud lock-in. Neste sentido, esse trabalho prop?e o uso de Web
Sem?ntica para evitar o cloud lock-in, onde modelos em RDF s?o usados para especificar os
recursos de uma nuvem, que s?o gerenciados via consultas SPARQL. Nessa dire??o, esse
trabalho: (i) apresenta um modelo avaliativo que quantifica o problema do cloud lock-in, (ii)
avalia o cloud lock-in entre tr?s solu??es multi-cloud e tr?s plataformas de nuvem, (iii) prop?e
utilizar RDF e SPARQL na ger?ncia de recursos de nuvem, (iv) apresenta o Cloud Query
Manager (CQM), um servidor SPARQL que implementa a proposta, e (v) compara tr?s
solu??es multi-cloud em rela??o ao CQM quanto ao tempo de resposta e a efetividade na
resolu??o do cloud lock-in. / Cloud computing can be defined as a distributed computational model by through resources
(hardware, storage, development platforms and communication) are shared, as paid services
accessible with minimal management effort and interaction. A great benefit of this model is to
enable the use of various providers (e.g a multi-cloud architecture) to compose a set of
services in order to obtain an optimal configuration for performance and cost. However, the
multi-cloud use is precluded by the problem of cloud lock-in. The cloud lock-in is the
dependency between an application and a cloud platform. It is commonly addressed by three
strategies: (i) use of intermediate layer that stands to consumers of cloud services and the
provider, (ii) use of standardized interfaces to access the cloud, or (iii) use of models with
open specifications. This paper outlines an approach to evaluate these strategies. This
approach was performed and it was found that despite the advances made by these strategies,
none of them actually solves the problem of lock-in cloud. In this sense, this work proposes
the use of Semantic Web to avoid cloud lock-in, where RDF models are used to specify the
features of a cloud, which are managed by SPARQL queries. In this direction, this work: (i)
presents an evaluation model that quantifies the problem of cloud lock-in, (ii) evaluates the
cloud lock-in from three multi-cloud solutions and three cloud platforms, (iii) proposes using
RDF and SPARQL on management of cloud resources, (iv) presents the cloud Query
Manager (CQM), an SPARQL server that implements the proposal, and (v) comparing three
multi-cloud solutions in relation to CQM on the response time and the effectiveness in the
resolution of cloud lock-in.
|
2 |
Planejamento e controle na constru??o civil de parques e?licos: proposta explorat?ria de uma abordagem h?brida de gerenciamento de projetosPereira, Pedro Baesse Alves 29 July 2016 (has links)
Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2017-02-13T19:28:10Z
No. of bitstreams: 1
PedroBaesseAlvesPereira_DISSERT.pdf: 1699674 bytes, checksum: f6af93574e41ad6736f18ad1e075daae (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2017-02-14T18:35:46Z (GMT) No. of bitstreams: 1
PedroBaesseAlvesPereira_DISSERT.pdf: 1699674 bytes, checksum: f6af93574e41ad6736f18ad1e075daae (MD5) / Made available in DSpace on 2017-02-14T18:35:46Z (GMT). No. of bitstreams: 1
PedroBaesseAlvesPereira_DISSERT.pdf: 1699674 bytes, checksum: f6af93574e41ad6736f18ad1e075daae (MD5)
Previous issue date: 2016-07-29 / O fornecimento de energia el?trica tem sido considerado um aspecto cr?tico da vida moderna,
atuando como papel central no cen?rio econ?mico da maioria dos pa?ses. Com a preocupa??o
ambiental, econ?mica e a evolu??o tecnol?gica, a energia e?lica se tornou uma op??o vi?vel de
fonte alternativa de energia el?trica. Para a obten??o desse tipo de gera??o el?trica ? necess?ria a
constru??o de parques e?licos, que s?o projetos de alta complexidade. Com o intuito de ajudar no
processo de edifica??o civil desse tipo de empreendimento, esta pesquisa prop?e um modelo
h?brido de planejamento e controle de gerenciamento de projetos para auxiliar a constru??o civil
de parques e?licos. A primeira parte da pesquisa foi constitu?da de uma investiga??o de campo
preliminar e de estudo da literatura sobre gerenciamento de projetos, energia e?lica e constru??o
de parques e?licos. Na segunda etapa, um estudo de caso de constru??o de parque e?lico foi
feito, considerado a refer?ncia de constru??o civil para o melhor entendimento do seu processo e
de como o gerenciamento de projetos foi usado. Assim, foi proposto um modelo h?brido de
planejamento e controle da constru??o civil de parques e?licos que aprimoram a execu??o de
projetos, aperfei?oando ?ndices de car?ter financeiro, de satisfa??o do cliente e de compet?ncia
em projetos. / The supply of electricity has been considered a critical aspect of the modern life, working as a
central role in the economic situation of most countries. The environmental, economic concerns
and the technological evolution allowed the consolidation of wind energy as a viable alternative
energy source. To produce this type of electricity generation is required the construction of wind
farms, which are high complexity projects. This research aims to propose a hybrid management
project model of planning and controlling to assist the construction of wind farms by helping the
process of building this sort of constructions. The first part of research was a preliminary field
investigation and literature study on project management, wind power and construction of wind
farms. During the second phase, the case study was performed about the construction of a wind
farm, that is considered a reference in civil construction to better understand its process and how
the project management was used. With this information, the planning and controlling hybrid
model for construction of wind farms was proposed. It aims the improvement of wind projects
edification resulting in better financial, customer satisfaction and skill projects aspects.
|
Page generated in 0.0609 seconds