Papers
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Data Management with Risk Management in Engineering and Science Projects
Engineering and Science projects are facing new data management challenges, which are currently being addressed through the development of data management plans. However, project stakeholders are unable to proper assess if their plan is representative of good data management practices. To address this issue, we propose a risk management framework to assist the definition of a data management plan in engineering and science projects. To validate our proposal, we present an application to a civil engineering project concerning dam safety.
Year: 2014
Number Pages:
49-66pp.
Author(s): Vieira, R. J. C.; Ferreira, F.; Barateiro, J.; Borbinha, J. L.
: New Review of Information Networking
Keywords: Risk management framework; Risk management; Data management plan; Data management; Engineering; Science
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Designing Digital Preservation Solutions:A Risk Management-Based Approach
Digital preservation aims to keep digital objects accessible over long periods of time, ensuring the authenticity and integrity of these digital objects. In such complex environments, Risk Management is a key factor in assuring the normal behaviour of systems over time. Currently, the digital preservation arena commonly uses Risk Management concepts to assess repositories. In this paper, we intend to go further and propose a perspective where Risk Management can be used not only to assess existing solutions, but also to conceive digital preservation environments. Thus, we propose a Risk Management-based approach to design and assess digital preservation environments, including: ·the definition of context and identification of strategic objectives to determine specific requirements and characterize which consequences are acceptable within the identified context; ·the identification, analysis and evaluation of threats and vulnerabilities that may affect the normal behaviour of a specific business or the achievement of the goals and conformance to the requirements identified in the context characterization; and, ·definition of actions to deal with the risks associated with the identified threats and vulnerabilities. We generalize and survey the main requirements, threats, vulnerabilities and techniques that can be applied in the scope of digital preservation.
Year: 2010
Number Pages:
4-17pp.
Author(s): Barateiro, J.; Antunes, G. J.; Freitas, F.; Borbinha, J. L.
: International Journal of Digital Curation
Editor: Digital Curation Centre
Volume:
Vol 5, No 1.
Keywords: Digital threats; Digital preservation
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Addressing Digital Preservation: Proposals for New Perspectives
Digital preservation aims at maintaining digital objects accessible over long periods of time, ensuring the authenticity and integrity of these digital objects. In this paper, we propose three different approaches to address the digital preservation problem. First, we survey the main requirements specific to the preservation arena. Next, we show how digital preservation can be approached as a specific case of System of Systems Engineering. Then, we introduce Enterprise Architecture as a framework which is regularly used to assist information systems design and maintenance, but can also be applied to System of Systems and consequently to digital preservation. Finally, in such complex environments, Risk Management is a key factor to assure the normal behavior of systems along time. Thus, we propose a Risk Management based approach to design and assess digital preservation environments, enclosing the definition of context and requirements, and the identification of threats and vulnerabilities, to be used as the basis of the definition of actions to deal with the risks associated with those threats and vulnerabilities. We generalize and survey the threats, vulnerabilities and techniques that can be applied in the scope of digital preservation.
Year: 2009
Author(s): Barateiro, J.; Antunes, G. J.; Borbinha, J. L.
Keywords: Interoperability; Data grids; Dependability; Digital preservation; Digital libraries
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Challenges on preserving scientific data with data grids
The emerging context of e-Science imposes new scenarios and requirements for digital preservation. In particular, the data must be reliably stored, for which redundancy is a key strategy. But managing redundancy must take into account the potential failure of component. Considering that correlated failures can affect multiple components and potentially cause a complete loss of data, we propose an innovative solution to manage redundancy strategies in heterogeneous environments such as data grids. This solution comprises a simulator that can be used to evaluate redundancy strategies according to preservation requirements and supports the process to design the best architecture to be deployed, which can latter be used as an observer of the deployed system, supporting its monitoring and management.
Year: 2009
Author(s): Barateiro, J.; Antunes, G. J.; Freitas, F.; Borbinha, J. L.
Editor: ACM
Keywords: Redundanct; Digital preservation; E-science; Data grids; Simulation
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Designing digital preservation solutions: a risk management based approach
Digital preservation aims at maintaining digital objects accessible over long periods of time, ensuring the authenticity and integrity of these digital objects. In such complex environments, Risk Management is a key factor to assure the normal behaviour of systems along time. Currently, the digital preservation arena commonly uses Risk Management concepts to assess repositories. In this paper, we intend to go beyond and propose a perspective where Risk Management can be used to assess existing solutions, but also to conceive digital preservation environments. Thus, we propose a Risk Management based approach to design and assess digital preservation environments, enclosing: (i) the definition of context and identification of strategic objectives to determine specific requirements and characterize which consequences are acceptable within the identified context; (ii) the identification, analysis and evaluation of threats and vulnerabilities that may affect the normal behaviour of a specific business or the achievement of the goals and conformance to the requirements identified in the context characterization; and, (iii) definition of actions to deal with the risks associated with the identified threats and vulnerabilities. We generalize and survey the main requirements, threats, vulnerabilities and techniques that can be applied in the scope of digital preservation.
Year: 2009
Author(s): Barateiro, J.; Antunes, G. J.; Freitas, F.; Borbinha, J. L.
Keywords: Digital preservation; Risk management
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Digital Preservation of Heterogeneous Data
Digital preservation aims at maintaining digital objects and making data accessible over long periods of time. The emerging context of e-Science imposes new scenarios and new requirements for digital preservation. This paper presents the main issues, current solutions and prominent projects for digital preservation and e-Science data management. Finally, it presents the problem to be addressed, the solutions to explore, the proposed methodology and expected contributions of the associated PhD work.
Year: 2009
Author(s): Barateiro, J.
Editor: IEEE Technical Committee on Digital Libraries
Volume:
Volume 5 Issue 2.
Keywords: Digital preservation; E-science
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Long-term data management and the safety of large civil engineering structures
Large civil engineering structures are continuously monitored to assure their structural safety. The Portuguese National Laboratory for Civil Engineering currently monitors several types of structures, like concrete dams, bridges or other transportation infrastructures. The consequences of a structural failure are potentially catastrophic, varying from loss of life or environmental damage to high economic impacts. The management and preservation of structural monitoring data is crucial to support decisions concerning the structural safety. However, preserving data also entails several risks and threats, comprising strong safety requirements as happens in civil engineering structures.
Year: 2009
Author(s): Barateiro, J.; Santos, J.; Mata, J.; Borbinha, J. L.; Antunes, G. J.
Keywords: Digital preservation; Structural safety
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Preserving Digital Data in Heterogeneous Environments
Digital preservation aims at maintaining digital objects accessible over a long period of time, regardless of the challenges of organizational or technological changes or failures. In particular, data produced in e-Science domains could be reliably stored in todays data grids, taking advantage of the natural properties of this kind of infrastructure to support redundancy. However, to achieve reliability we must take into account failure interdependency. Taking into account the fact that correlated failures can affect multiple components and potentially cause complete loss of data, we propose a solution to evaluate redundancy strategies in the context of heterogeneous environments such as data grids. This solution is based on a simulation engine that can be used not only to support the process of designing the preservation environment and related policies, but also later on to observe and control the deployed system.
Year: 2009
Author(s): Antunes, G. J.; Barateiro, J.; Cabral, M.; Borbinha, J. L.; Rodrigues, R.
Keywords: Data grids; Dependability; Digital preservation; Digital libraries
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Securing the iRODS Metadata Catalog for Digital Preservation
Digital preservation is the ability to retrieve, access, and use digital objects through time, while ensuring the authenticity and integrity properties of these objects. Data grids represent a model of storage systems designed for data management and sharing, which concept also has been proposed for digital preservation. However, since data grids are not specifically designed for this purpose, they present weaknesses that have to be handled. This poster will present a set of services to address a problem in the metadata catalog of the iRODS data grid, strengthening that platform for digital preservation purposes.
Year: 2009
Author(s): Antunes, G. J.; Barateiro, J.
Editor: Springer
Keywords: Data grids; Digital preservation; Digital libraries
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Digital preservation of heterogeneous data
Digital preservation aims at maintaining digital objects and data accessible over long periods of time. The emerging context of e- Science imposes new scenarios and new requirements for digital preser- vation. This paper presents the main issues, current solutions and promi- nent projects for digital preservation and e-Science data management. Fi- nally, it presents the problem to be addressed, the solutions to explore, the proposed methodology and expected contributions of the associated PhD work.
Year: 2008
Author(s): Barateiro, J.
Keywords: Interoperability; E-science; Data grid; Digital preservation; Digital libraries
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Comunicação
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Analysis of federated enterprise architecture models
Enterprise architecture models support decision-making as they help organizations to understand, communicate and analyse how business processes are performed, the goals they achieve, the information they use, as well as the applications that realize the business, and the supporting technological infrastructure. The integrated analysis of these models is not straightforward because it cross-cuts different domains that are described using heterogeneous concepts. This paper explores the application of ontologies to analyse enterprise architecture models. Ontologies represent knowledge that can be analysed using computational inference. The contributions of this paper are (1) the specification of multiple enterprise architecture models as ontological schemas, (2) the integration of ontological schemas, and (3) the analysis of the integrated models. The solution artefact consists of a federated model specified as a set of ontological schemas described in OWL-DL that integrates multiple enterprise models and assists their analysis using computational inference. The paper demonstrates the application of the federated model to the ArchiMate language as a means to assess the compliance of business requirements in a civil engineering scenario.
Year: 2015
Number Pages:
1-14pp.
Author(s): Antunes, G. J.; Barateiro, J.; Caetano, A.; Borbinha, J. L.
Editor: AIS
Keywords: Model integration; Model analysis; Ontology; Enterprise architecture
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VPlan Ontology for Collection of Process Verification Data
The reproducibility of modern research depends on the possibility to faithfully rerun the complex and distributed data transformation processes which were executed by scientists in order to make new scientific breakthroughs. New methods and frameworks try to address this problem by collecting evidence used for verification of such experiments. However, there is still a lack of a flexible data model which would address all of the needs of these methods. This paper presents the VPlan ontology designed for the purpose of organizing and storing of data collected for verification of preserved processes. The VPlan ontology stores and links the data extracted from the preserved process. Furthermore, it includes descriptions of actions taken to collect the data, as well as provides a clear break down of requirements that lead to its collection. We demonstrate the usage of the VPlan ontology within the preservation process and describe in detail its alignment with the Verification Framework (VFramework). In order to illustrate its applicability to the eScience domain, we evaluate it on a use case from the civil engineering domain, which is an example of a typical sensor data analysis process.
Year: 2014
Number Pages:
10pp.
Author(s): Miksa, T.; Vieira, R. J. C.; Barateiro, J.; Rauber, A.
Keywords: Context model; Process modelling; Ontology; Verification
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Framework for Verification of Preserved and Redeployed Processes
Preserving processes requires not only the identification of all process components, but also the interception of all interactions of the process with the external influencers. In order to verify if the collected data is sufficient for the purpose of redeployment, as well as to verify that the redeployed process performs according to expectations, a framework for verification is needed. This paper presents a framework for verification of preserved and redeployed processes. We demonstrate the applicability of the framework on an use case from the eScience domain. The preservation and the redeployment of the eScience process is tested by migrating it to substantially different environments.
Year: 2013
Number Pages:
10pp.
Author(s): Miksa, T.; Pröll, S.; Mayer, R.; Strodl, S.; Vieira, R. J. C.; Barateiro, J.; Rauber, A.
Editor: BNP
Keywords: Ontology; Verification; Business processes
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Leveraging DP in Commercial Contexts through ERM
Until now, digital preservation research has been mainly driven by public or publicly funded organizations. The justification of costs for the preservation is based on abstract risks such as the risk of losing cultural heritage information, or the risk of data deficiencies for current and future research in big sets of data. Typically, the benefits from digitally preserving the objects of interest is difficult or impossible to quantify in terms of return-on-invest. In fact, it is common that memory institutions are mandated to preserve specific digital objects, making digital preservation not an option, but a legal obligation. While in the case of cultural heritage and scientific research qualitative reasons for preservation suffice, enterprises have an additional obligation to quantify the expected benefits and expenses in order to determine the scope of information to be managed and take commercial decisions for or against digital preservation. To provide appropriate means for leveraging the benefits of digital preservation in a commercial context, we argue in this paper that enterprise risk managers are the established function to assess and support decisions about preservation in enterprises. We show that enterprise risk management can be linked to digital preservation and how intelligent enterprise risk management can be utilized to identify the need for digital preservation, determine the corresponding actions, and contribute to the overall commercial success of enterprises.
Year: 2013
Number Pages:
6pp.
Author(s): Barateiro, J.; Burda, D.; Simon, D.
Editor: BNP
Keywords: Digital preservation; Risk management
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Preservation and redeployment of sensor acquisition processes from a dam safety information system
There is a growing demand for digital preservation of, not only static objects and files, e.g. text documents and images, but also dynamic objects and whole processes, such as interactive media and entire business and scientific processes. This paper investigates the problem of digitally preserving monitoring processes of a dam safety information system. Monitoring processes are a crucial element in ensuring structural safety; the interpretation of the past data produced by such processes as well as the prediction of potential future behaviour facilitates an earlier detection of possible dam failure. After a successful preservation performance, relevant data can be used or re-produced without the need for the original system to still exist; merely by re-playing the preserved information and data. This enables several possibilities in the scope of a water dam system. The retracing of former situations and structural behaviour decades later is one of them. Furthermore, the interpretation of past data and subsequent prediction of future behaviour that could facilitate an earlier detection of a fault or possible dam failure. This work presents a methodology for preserving the obtained sensor data (readings, measurements, and meta-data) from a dam safety information system, whose involved processes include: data acquisition, the preservation process itself, and the re-playing and redeployment of the preserved data.
Year: 2013
Number Pages:
490-495pp.
Author(s): Bachmann, A.; Neumann, M.; Miri, H.; Barateiro, J.; Antunes, G. J.; Caetano, A.
Keywords: Digital preservation; Civil engineering; Sensor networks
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Archives and digital repositories in an eGovernment context: When the subsequent bird catches the worm
N/A
Year: 2012
Number Pages:
8p.
Author(s): Kulovits, H.; Rauber, A.; Gamito, R.; Barateiro, J.; Borbinha, J. L.; Mazive, M.; João, D.
Keywords: Digital preservation; E-government
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Conceitos de Sistemas de Informação Aplicados a Gestão de Riscos
O objetivo das atividades de gestão de risco consiste em definir um conjunto de mecanismos para controlar os riscos associados a atividades e recursos valiosos. Verifica-se que grande parte das atividades de gestão de risco opera em silos, conduzindo a uma visão fragmentada de riscos, na qual cada atividade usa a sua linguagem, princípios e métricas. Este facto limita a obtenção de uma perceção global, onde riscos interdependentes nem sempre são antecipados, controlados ou geridos. De forma a otimizar a visão global de riscos numa organização, este artigo propõe a aplicação à gestão de risco de conceitos já estabelecidos na governação dos sistemas de informação. Analisamos o exemplo da preservação digital, que é reconhecida como uma preocupação em gerir conteúdos valiosos ao longo do tempo, assegurando que a informação digital pode ser lida e usada num futuro imprevisível. Este é assim um problema interdisciplinar, no qual desafios tecnológicos intersetam objetivos organizacionais, requerendo a gestão de riscos a múltiplos níveis. Este artigo propõe uma solução integrada de gestão de risco que providencia uma visão holística de riscos com o objetivo de permitir que uma organização possa antecipar e gerir riscos de uma forma global.
Year: 2012
Number Pages:
59-75pp.
Author(s): Barateiro, J.; Borbinha, J. L.
Editor: Edições Salamandra
Keywords: Gestão de riscos; Sistemas de informação
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Digital Preservation Challenges on Software Life Cycle
TIMBUS is a partially EU-funded research project in the area of digital preservation. The project aims at a holistic view on the preservation of business processes over long-term periods. This view includes the business software as a well as all related context information for re-use at a later point in time. Digital preservation ensures continued access to digital information over time (e.g., 5, 15, 25 or 50 years). The long-term planning horizon of preserving relevant parts of a business processes raises a number of new research challenges for software design, development and maintenance. Current service-oriented systems are using distributed services from different providers located at different geographical locations. Workflows and business processes are volatile in terms of services disappearing and fundamental changes in technology. TIMBUS researches on methods, processes and tools to ensure continued access to information based on preserving relevant data and their context (e.g., services, software and the datas meaning). The project aims at identifying, capturing and preserving relevant information and their dependencies necessary to understand the preserved business processes in a remote future. In this paper we describe the primary objectives of the TIMBUS project with special focus on challenges caused by the preservation of software.
Year: 2012
Number Pages:
4p.
Author(s): Barateiro, J.; Draws, D; Neumann, M.; Strodl, S.
Keywords: Software quality; Business processes; Process preservation; Digital preservation
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Inspecções Visuais Aumentadas
As inspeções visuais (IV) são uma das componentes essenciais das atividades de observação de obras de engenharia civil, complementando a observação instrumental. Os dados recolhidos nas inspeções visuais podem sempre ser considerados incompletos e ambíguos, tanto no que toca à localização exata das ocorrências registadas, como nos diversos graus de subjetividade resultantes da execução ou interpretação diferente que pode ser realizada por técnicos distintos (por exemplo, percursos distintos para visitar todos os pontos de interesse, técnicas de registo não homogéneas, etc). A evolução das tecnologias móveis (tablets, smartphones, ultra-mobile PCs, etc), especialmente na sua capacidade de armazenamento e processamento, apresenta-se como ferramenta passível de agilizar e simplificar os procedimentos atuais de inspeção visual. Este artigo descreve algumas aplicações protótipo para dispositivos móveis, algumas delas recorrendo a realidade aumentada, aplicações estas com impacto direto nos procedimentos de inspeções visuais em barragens.
Year: 2012
Author(s): Gamito, R.; Marcelino, J.; Ribeiro, S.
Keywords: Barragens; Inspecções visuais; Realidade aumentada
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Manage Risks through the Enterprise Architecture
The goal of Risk Management activities is to define prevention and control mechanisms to address the risks attached to specify activities and valuable assets. Many Risk Management efforts operate in silos with narrowly focused, functionally driven, and disjointed activities. That fact leads to a fragmented view of risks, where each activity uses its own language, customs and metrics. The lack of interconnection and holistic view of risks limits an organization-wide perception of risks, where interdependent risks are not anticipated, controlled or managed. In order to address the Risk Management interoperability and standardization issues, this paper proposes an alignment between Risk Management, Governance and Enterprise Architecture activities, providing a systematic support to map and trace identified risks to enterprise artifacts modeled within the Enterprise Architecture, supporting the overall strategy of any organization. We discuss the main relationships between Risk Management and Enterprise Architecture and propose an architecture to integrate risks concerns into the overall organization environment.
Year: 2012
Number Pages:
3297-3306pp.
Author(s): Barateiro, J.; Antunes, G. J.; Borbinha, J. L.
Editor: CPS - Conference Publishing Services
Keywords: Iso 31000; Togaf; It governance; Enterprise architecture; Risk management
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Dissertação de Mestrado
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Processo Iterativo de Migração de Dados
Com a evolução das tecnologias de informação, a migração de dados legados é essencial para garantir o correcto funcionamento das novas aplicações. A eficiência e correcção das aplicações depende, fortemente, da qualidade dos dados armazenados. A criação de processos de migração de dados através da implementação de Software específico é bastante complexa. Por isso, é fundamental disponibilizar mecanismos de apoio à realização de tarefas de tratamento e migração de dados. A framework Ajax disponibiliza vários operadores para limpeza e transformação de dados. Não sendo uma ferramenta exclusivamente orientada para a migração de dados, pretende-se que a sua utilização na migração de um projecto real permita validar a respectiva aplicação. Todas as lacunas dos operadores do Ajax podem, assim, ser preenchidas através do refinamento e extensão da lógica dos operadores, nomeadamente, no suporte à identificação de registos errados e ao carregamento incremental de dados nos sistemas alvo. No âmbito do projecto gestBarragens, desenvolveu-se um processo de migração que inclui o carregamento de um sistema de informação legado e vários sistemas simples relacionados com informação acerca da segurança de barragens de betão em Portugal.
Year: 2008
Author(s): Barateiro, J.
Keywords: Grafo; Limpeza de dados; Qualidade de dados; Etl; Migração
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Workflow modeling using UML, Declarative Tools and WEB2.0
Manual translation of UML diagrams to programmatic code is tedious and error prone. Many CASE tools allow computer code to be generated from Class Diagrams, but fewer, if any, allow the transformation of Activity Dia- grams (ADs) in executable and workflow defining computer code. Our project aims at: Translating UML ADs into the ISCO programming language; Building a workflow execution system that runs the translations; Building a graphical tool to create and edit workflows, and visualize the executions. Defending that UML ADs can specify executable workflows, we present an ISCO based workflow engine, acting over the information extracted from Activity Diagrams and integrated into a platform that allows a user to graph- ically model and manage workflows within a web environment. The server, built with ISCO, assures the data persistence and the execution of the work- flows. Communication with the server is performed through AJAJ.
Year: 2008
Author(s): Gamito, R.
Keywords: Isco; Uml; Workflow
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Relatório Científico
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A Cibersegurança em Portugal - Panorâmica organizativa e legislativa em 2022
As sociedades contemporâneas estão crescentemente dependentes das tecnologias de informação e de comunicação. Embora estas tecnologias tragam benefícios inegáveis às sociedades, aumentam as ameaças e os riscos que resultam da sua dependência. Por esse motivo têm sido tomadas medidas em Portugal para dotar o país de uma melhor resposta operacional a ciberataques. Sendo esta realidade pouco conhecida dos agentes da sociedade e da administração pública, este relatório apresenta uma panorâmica da situação atual da área de cibersegurança no plano organizativo e legislativo.
Year: 2023
Author(s): Fernandes, J. P.
Keywords: Cibersegurança; Ciberespaço; Risco; Ameaça
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Execução do projeto PISCA Serviços e ferramentas de suporte à computação paralela em ambientes distribuídos
O presente relatório descreve a atividade realizada pelo Núcleo de Tecnologias da Informação em Engenharia Civil, no âmbito do processo PiSCA Serviços e Ferramentas de Suporte à Computação Paralela em Ambientes Distribuídos, durante o período compreendido entre 1 de julho de 2015 e 30 de junho de 2016.
Year: 2016
Author(s): Barateiro, J.
Keywords: Ambientes distribuídos; Computação paralela
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ParFludan: Software paralelo para análise estrutural de elementos finitos
Ao longo dos anos recentes, a atividade desenvolvida nas áreas de engenharia tem-se apoiado cada vez mais na utilização de ferramentas de software apropriadas. Estas ferramentas são muitas vezes desenvolvidas especificamente para dar resposta a um problema muito bem definido, faltando-lhes a capacidade para resolver de forma eficiente problemas semelhantes computacionalmente mais exigentes. A paralelização destas ferramentas é uma das abordagens existentes para permitir aumentar a sua eficiência e aumentar a complexidade dos problemas admissíveis. Este relatório introduz o programa ParFludan, um programa paralelo para análise estrutural pelo método dos elementos finitos, que surgiu da necessidade de melhorar o desempenho do programa Fludan-RAS. Executado no cluster Medusa do LNEC, este novo programa permite tratar problemas de maior complexidade do que o original, com melhorias significativas ao nível dos tempos de execução. Além da descrição do processo de paralelização do programa original e das tecnologias para tal utilizadas, é também feita a análise do programa desenvolvido e são dadas instruções para a sua utilização, com o objetivo não só de facilitar a utilização do ParFludan como também de providenciar algumas linhas de orientação para a paralelização de outros programas em condições semelhantes.
Year: 2016
Author(s): Coelho, J.; Inês, A.
Keywords: Medusa; Análise estrutural; Elementos finitos; Paralelização
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Uso eficiente de memória em computação científica
A otimização de programas de computação científica é um problema extremamente relevante em engenharia pois uma otimização eficaz pode trazer ganhos de algumas ordens de grandeza em diversas dimensões: tempo de execução, memória utilizada, custo, precisão numérica, dimensão dos dados de entrada, tempo de programador, etc. Este relatório discute a otimização de memória e, em particular, pretende fornecer linhas de orientação para a otimização eficaz de um programa de computação científica em termos de memória. Descreve-se brevemente um modelo simples de um computador que permite compreender os conceitos mais relevantes da memória de um computador, e descrevem-se várias estratégias de otimização. Estas estratégias são discutidas e exemplificadas, e compiladas numa checklist com vista a ser percorrida e analisada aquando da otimização de memória de um programa de computação científica. É discutido um caso de estudo em que foi feita a análise dos objetivos da otimização e das características do programa. Feita esta análise foram escolhidas três estratégias da checklist que permitiram, com pouco esforço, resolver completamente o problema original.
Year: 2016
Author(s): Rico, J.; Inês, A.
Keywords: Computação científica; Otimização de programas; Memória
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Utilização do cluster Medusa a partir de ambiente Windows com o Eclipse
O LNEC mantém desde 2007 uma infraestrutura cluster, o Medusa, com o objectivo de proporcionar aos seus investigadores acesso a capacidades modernas de computação científica para resolução de problemas de engenharia. No entanto, algumas características do cluster têm atrasado a sua adoção generalizada pelos investigadores, sendo uma delas a necessidade de utilizar um ambiente Linux para interagir com o Medusa da forma convencional. Neste relatório é introduzida uma alternativa a esta forma convencional de utilização do Medusa, recorrendo ao ambiente de desenvolvimento integrado (IDE) Eclipse e à ferramenta Parallel Tools Platform (PTP), que permite evitar a interacção com o ambiente Linux e utilizar o cluster a partir de um ambiente mais familiar, como o Windows. A expetativa é que esta solução alternativa contribua para facilitar a transição dos investigadores para o Medusa, conduzindo a um melhor aproveitamento dos recursos computacionais disponíveis no laboratório e à exploração de novas possibilidades no domínio da resolução de problemas de cálculo complexos.
Year: 2015
Author(s): Inês, A.; Coelho, J.
Keywords: Eclipse; Computação paralela; Medusa
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E2I - Estratégia de investigação e inovação 2013-2020
N/A
Year: 2014
Author(s): Catarino, J. M.; Campos, V.; Freitas, M. J.; Oliveira, E. M.; Pereira, E. V.; Beja Neves, M.
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Computação paralela no LNEC - Guia introdutório e estudo de caso
Este trabalho introduz os princípios da computação paralela tendo em vista a sua aplicação como ferramenta de computação científica, em particular para acelerar a execução e alargar o escopo de aplicação de programas de cálculo científico. São introduzidos os principais conceitos relativos à computação paralela, as diferentes arquitecturas de máquinas paralelas e os diferentes modelos de paralelização que se podem adoptar, com destaque para o modelo de message-passing e a ferramenta MPI. São ainda descritos os métodos de operação com o cluster do LNEC, o Medusa, e um estudo de caso que ilustra a aplicação de MPI e de uma estratégia de paralelização à resolução de um problema real.
Year: 2013
Number Pages:
44pp.
Author(s): Coelho, J.; Inês, A.
Editor: LNEC
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Repositório Digital do LNEC - Progressão entre 2009 e 2012
O Repositório Digital de Documentos do LNEC tem vindo a crescer continuamente, desde que entrou oficialmente em produção, em 2009, evoluindo desde esta altura, e cumprindo a sua função de acervo centralizado das publicações do Laboratório e facilitando a consulta das mesmas por parte dos funcionários. Este documento descreve a evolução da plataforma desde a sua entrada em produção, os seus problemas e o que se fez para os resolver, e apresenta uma visão crítica do estado atual da mesma, propondo alguns pontos chave para assegurar a continuidade do repositório no LNEC.
Year: 2012
Number Pages:
23pp.
Author(s): Gamito, R.
Editor: LNEC
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Repositórios Digitais nos Laboratórios de Engenharia dos PALOP - Missões a Cabo Verde e Moçambique e preparação da missão a Angola
Cada vez mais, o acesso expedito à informação é essencial para o adequado desempenho dos processos envolvidos na Engenharia Civil. É procedimento habitual o LNEC enviar livros e documentos para os diversos Laboratórios de Engenharia dos PALOP, dadas as suas carências a nível de literatura. Dada experiência positiva do LNEC com o seu Repositório Digital, e por se considerar benéfica uma colaboração direta com os PALOP no sentido de partilhar conhecimento entre os Laboratórios, o LNEC, com a colaboração da CPLP, iniciou o processo de capacitação dos Laboratórios de Engenharia dos PALOP com repositórios digitais. Este documento descreve os esforços já empreendidos com três dos países dos PALOP, nomeadamente Cabo Verde, Moçambique e Angola.
Year: 2012
Number Pages:
31pp.
Author(s): Gamito, R.
Editor: LNEC
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DSpace Manual de utilização
Este relatório apresenta-se sobre a forma de manual de utilização do repositório digital do Laboratório, pretendendo não só servir de base de apoio para novos utilizadores como também responder a algumas perguntas comuns e mostrar algumas boas práticas aos utilizadores mais habituais e/ou mais avançados.
Year: 2008
Number Pages:
23pp.
Author(s): Gamito, R.
Keywords: Dspace; Manual; Repositório digital
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Ficheiro de Substituição
N/A
Year: 2007
Author(s): Gamito, R.
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