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Produção do beijupirá (Rachycentron canadum) visando a rastreabilidade - parâmetros de qualidade ambiental; físico-químicos e microbiológicos da espécie; Cobia production (Rachycentron canadum) for traceability-environmental quality, physico-chemical and microbiological parameters of the species

Silva, Luciana Kimie Savay da
Fonte: Biblioteca Digitais de Teses e Dissertações da USP Publicador: Biblioteca Digitais de Teses e Dissertações da USP
Tipo: Tese de Doutorado Formato: application/pdf
Publicado em 17/04/2015 PT
Relevância na Pesquisa
36.63%
Atualmente, o beijupirá é a espécie nativa que reúne o maior número de características em comum com outras espécies aquáticas cultivadas comercialmente, sendo assim, indicada para ser a espécie pioneira na piscicultura marinha brasileira. No entanto, sua criação é incipiente. Neste trabalho, foram realizados dois estudos pontuais: um para monitorar a criação de beijupirás em gaiolas, sistema offshore, no litoral de Pernambuco; e outro para monitorar a criação de beijupirás em tanques-redes, sistema nearshore, no litoral de São Paulo. O objetivo foi aferir parâmetros ambientais de qualidade da água de criação, físico-químicos e microbiológicos do beijupirá, que possam ser utilizados na elaboração de um sistema modelo de rastreabilidade da cadeia produtiva dessa espécie. Em ambos os estudos foram realizadas quatro coletas em diferentes meses do ano, com o intuito de se avaliar as possíveis correlações existentes entre os parâmetros ambientais - índice pluviométrico e temperatura do ar - e os parâmetros de qualidade avaliados na água de criação - oxigênio dissolvido, temperatura, demanda bioquímica de oxigênio, demanda química de oxigênio, salinidade, amônia, nitrito, nitrato, fosfato, carbono orgânico total...

Rastreabilidade semi-automática através do mapeamento de entidades; Semi-automated traceability by entity mapping

Backes, Jerônimo
Fonte: Universidade Federal do Rio Grande do Sul Publicador: Universidade Federal do Rio Grande do Sul
Tipo: Dissertação Formato: application/pdf
POR
Relevância na Pesquisa
36.53%
Entre os fatores que geram o alto custo da rastreabilidade, está a dificuldade na criação e manutenção de relações precisas entre artefatos. Praticamente todas as metodologias existentes preocupam-se em relacionar artefatos diretamente entre si, o que dificulta o uso de processos automatizados na derivação de novos relacionamentos, bem como na manutenção dos já existentes. Com base nestas observações, o presente trabalho propõe o uso de estruturas intermediárias nos relacionamentos, chamadas de entidades, para representar os interesses tratados pelos artefatos, e derivar, automaticamente, relações complexas entre os mesmos. Este modelo foi avaliado por profissionais da indústria e apresentou-se como solução de rastreamento viável, em comparação com as tradicionais matrizes de rastreabilidade. Espera-se que este sirva como base para soluções inovadoras na área, que ainda é considerada problemática.; The difficulties in creation and maintenance of precise relationships between artifacts are the root cause of traceability high cost. VirtualIy alI existing methodologies propose solutions that relate artifacts directly among themselves, what hinders the use of automated processes to derivate new relationships...

Uma ferramenta de traceability para documentos

Barden, Felipe
Fonte: Universidade Federal do Rio Grande do Sul Publicador: Universidade Federal do Rio Grande do Sul
Tipo: Trabalho de Conclusão de Curso Formato: application/pdf
POR
Relevância na Pesquisa
56.88%
Neste trabalho é realizada a proposta e implementação de uma ferramenta para auxiliar as tarefas de rastreabilidade dos documentos de um projeto e de suas cláusulas. O método utilizado para captura de requisitos e funcionalidades desejadas foi baseando-se em artigos envolvendo problemas na rastreabilidade de requisitos de projeto, sendo essa nossa principal fonte de informações. Para um melhor entendimento do trabalho, primeiro é feita uma introdução aos conceitos necessários, como rastreabilidade de requisitos e o modelo de informações de rastreabilidade. Também são apresentados os problemas encontrados em processos atuais e que motivaram a criação de uma nova ferramenta para suprir essa necessidade. Após esse nivelamento inicial, é então descrita a ferramenta, com seus conceitos específicos (como os níveis de visualização), suas funcionalidades, pontos fortes e limitações. Por fim, é feita uma avaliação da ferramenta e pontos que podem ser melhor desenvolvidos para facilitar a interação do usuário e seu acesso às informações do projeto.; In this work, it is proposed and implemented a tool to assist the project’s documents traceability job, as well as its clauses. The method used for gathering requirements and desired features was based on papers about projects’s requirements traceability problems...

Development of an applicattion to improve traceability and food safety management

Pinto, D. B.; Castro, Inês; Vicente, A. A.
Fonte: Universidade do Minho Publicador: Universidade do Minho
Tipo: Conferência ou Objeto de Conferência
Publicado em //2005 ENG
Relevância na Pesquisa
36.49%
Food safety has become an important food quality attribute within the last decade. Facing recent food scandals taken up by the media, consumers are more and more concerned about and interested in the provenance and authenticity of their food. Both food industry and authorities need to be able to trace back and to authenticate food products and raw materials used for food production to comply with legislation and to meet the food safety and food quality requirements as well as the increasing consumer demand. Therefore, food companies are faced with the problem of defining and implementing a series of procedures, controls and measures. Moreover, it is necessary to define an application method which is both rigorous and economically sustainable in order to guarantee the safe production of food and to be able to trace it along the food chain. The application was designed to manage traceability as well as to help in the quality control and production improvement, using an user-friendly interface. This application was developed in Visual Basic over an SQL database and its main features are: to register quality control parameters of raw materials, in-course products and final products; to manage reception, production and expedition orders; to analyse production costs...

Traceability support in software product lines

Sousa, André Luís Sequeira de
Fonte: FCT - UNL Publicador: FCT - UNL
Tipo: Dissertação de Mestrado
Publicado em //2008 ENG
Relevância na Pesquisa
36.6%
Dissertação apresentada na Faculdade de Ciências e Tecnologia da Universidade Nova de Lisboa para a obtenção do grau de Mestre em Engenharia Informática.; Traceability is becoming a necessary quality of any modern software system. The complexity in modern systems is such that, if we cannot rely on good techniques and tools it becomes an unsustainable burden, where software artifacts can hardly be linked to their initial requirements. Modern software systems are composed by a many artifacts (models, code, etc.). Any change in one of them may have repercussions on many components. The assessment of this impact usually comes at a high cost and is highly error-prone. This complexity inherent to software development increases when it comes to Software Product Line Engineering. Traceability aims to respond to this challenge, by linking all the software artifacts that are used, in order to reason about how they influence each others. We propose to specify, design and implement an extensible Traceability Framework that will allow developers to provide traceability for a product line, or the possibility to extend it for other development scenarios. This MSc thesis work is to develop an extensible framework, using Model-Driven techniques and technologies...

Model-Driven requirements engineering process aided by ontologies and natural controlled languages

Cobe, Raphael Mendes de Oliveira
Fonte: Universidade Federal do Rio Grande do Norte; BR; UFRN; Programa de Pós-Graduação em Sistemas e Computação; Ciência da Computação Publicador: Universidade Federal do Rio Grande do Norte; BR; UFRN; Programa de Pós-Graduação em Sistemas e Computação; Ciência da Computação
Tipo: Dissertação Formato: application/pdf
POR
Relevância na Pesquisa
36.69%
Researches in Requirements Engineering have been growing in the latest few years. Researchers are concerned with a set of open issues such as: communication between several user profiles involved in software engineering; scope definition; volatility and traceability issues. To cope with these issues a set of works are concentrated in (i) defining processes to collect client s specifications in order to solve scope issues; (ii) defining models to represent requirements to address communication and traceability issues; and (iii) working on mechanisms and processes to be applied to requirements modeling in order to facilitate requirements evolution and maintenance, addressing volatility and traceability issues. We propose an iterative Model-Driven process to solve these issues, based on a double layered CIM to communicate requirements related knowledge to a wider amount of stakeholders. We also present a tool to help requirements engineer through the RE process. Finally we present a case study to illustrate the process and tool s benefits and usage; Pesquisas em Engenharia de Requisitos tem crescido ao longo dos últimos anos. Pesquisadores estão preocupados com uma série de problemas em aberto como: comunicação entre diversos perfıs envolvidos na engenharia de requisito; problemas na definição de escopo; problemas de volatilidade e ratreabilidade de requisitos. Para lidar com este conjunto de problemas em aberto...

A traceability process assessment model for the medical device domain

Regan, Gilbert; Biro, Miklos; Mc Caffery, Fergal; McDaid, Kevin; Flood, Derek
Fonte: Springer Publicador: Springer
Tipo: info:eu-repo/semantics/conferenceObject; all_ul_research; ul_published_reviewed
ENG
Relevância na Pesquisa
46.79%
peer-reviewed; Traceability of requirements through the software development lifecycle (including supporting processes such as risk management and change management) is a difficult and expensive task. The implementation of effective traceability allows organizations to leverage its many advantages, such as im-pact analysis, product verification and validation, and facilitation of code maintenance. Traceability is conducive to producing quality software. Within the medical device domain, as in other safety critical domains, soft-ware must provide reliability, safety and security because failure to do so can lead to injury or death. However, despite its criticality most software systems don’t employ explicit traceability between artefacts. Numerous barriers hamper the effective implementation of traceability such as cost, complexity of relation-ship between artefacts, calculating a return on investment, different stakeholder viewpoints, lack of awareness of traceability and a lack of guidance as to how to implement traceability. To assist medical device organisations in addressing the lack of guidance on how to implement effective traceability, this paper aims to present the devel-opment of a traceability process assessment model and how traceability process assessment and maintenance could be fully automated using the Open Services for Lifecycle Collaboration (OSLC) initiative. The process assessment model will allow organisations to identify strengths and weaknesses in their existing traceability process and pinpoint areas for improvement.

Medical device software traceability.

Mc Caffery, Fergal; Casey, Valentine; Sivakumar, M.S.; Coleman, Gerry; Donnelly, Peter; Burton, John
Fonte: Springer Verlag Publicador: Springer Verlag
Tipo: Book chapter; all_ul_research; ul_published_reviewed; none
ENG
Relevância na Pesquisa
36.81%
peer-reviewed; Software traceability is central to medical device software develop-ment and essential for regulatory approval. In order to comply with the regulatory requirements of the medical device industry it is essential to have clear linkages and traceability from requirements - including risks - through the different stages of the software development and maintenance lifecycles. The regulatory bodies request that medical device software development organizations clearly demon-strate how they follow a software development lifecycle without mandating a par-ticular lifecycle. However, due to the traceability requirements of the industry most medical device companies adopt the V-model. Within this chapter we will discuss the importance of traceability to medical device software development, the current state of practice within the industry in relation to traceability and how we feel that traceability could be improved within the industry. The chapter also de-scribes the development and implementation of a medical device traceability soft-ware process assessment method (Med-Trace) in two medical device software de-velopment organizations. We include these two case studies as one involved a medical device SME based in Ireland and the other a medical device SME based in the UK as we want to illustrate that Med-Trace can be applied within different countries.

Impact of standards on the role and application of traceability in the medical device domain

Regan, Gilbert; Mc Caffery, Fergal; Mc Daid, Kevin; Flood, Derek
Fonte: EuroSPI 2012 Publicador: EuroSPI 2012
Tipo: info:eu-repo/semantics/conferenceObject; all_ul_research; ul_published_reviewed
ENG
Relevância na Pesquisa
36.6%
peer-reviewed; Software failure in the medical device domain can lead to injury or death. Controlling this risk is fundamental to producing quality software. To produce quality software, an effective requirements and hazards traceability process is required. Hence traceability is central to medical device software de-velopment. It is also an essential requirement for regulatory approval. The ne-cessity for traceability is reinforced by the medical device standards and guide-lines. In this paper we outline how traceability is an important part of medical device software development, what standards contain reference to traceability, and which specific clauses within those standards companies should refer to when defining their traceability processes. We also summarise the findings ob-tained when a lightweight assessment method (Med-Trace), that we created, based upon the traceability practices within these standards, was implemented in two SME organizations.

Traceability-why do it?

Regan, Gilbert; Mc Caffery, Fergal; Mc Daid, Kevin; Flood, Derek
Fonte: Springer-Verlag Publicador: Springer-Verlag
Tipo: info:eu-repo/semantics/conferenceObject; all_ul_research; ul_published_reviewed
ENG
Relevância na Pesquisa
36.61%
peer-reviewed; Traceability of software artifacts, from requirements to design and through implementation and quality assurance, has long been promoted by the research and expert practitioner communities. However, evidence indicates that, with the exception of those operating in the safety critical domain, few software companies choose to implement traceability processes, in the most part due to cost and complexity issues. This paper presents a review of traceability literature including the implementa-tion of traceability in real organizations. Through both analyzing case studies and research published by leading traceability researchers, this paper synthesiz-es the motivations of the organizations for implementing traceability. Given the importance of traceability in the regulated domain of safety critical software, the paper compares the motivations and benefits for organizations operating inside and outside of this domain. Finally, based on an analysis of the disparate case studies, the paper re-assesses the value of traceability motivators for more widespread adoption by firms outside of the safety critical sector.

The barriers to traceability and their potential solutions: towards a reference framework

Regan, Gilbert; Mc Caffery, Fergal; Mc Daid, Kevin; Flood, Derek
Fonte: University of Limerick Publicador: University of Limerick
Tipo: info:eu-repo/semantics/conferenceObject; all_ul_research; ul_published_reviewed
ENG
Relevância na Pesquisa
36.6%
peer-reviewed; Traceability of software artifacts, from requirements to design and through implementation and quality assurance, has long been promoted by the research and expert practitioner communities. However, evidence indicates that, with the exception of those operating in the safety critical domain, few software companies choose to implement traceability processes, often due to associated cost and complexity issues. This paper presents a review of traceability literature including the implementation of traceability in real organizations. Through both analyzing case studies and research published by leading traceability researchers, this paper synthesizes the barriers faced by organizations while implementing traceability, along with proposed solutions to the barriers. Additionally, given the importance of traceability in the regulated domain of safety critical software, the paper compares the barriers for organizations operating inside and outside of this domain.

Implementation of traceability best practices within the medical device domain

Regan, Gilbert; Mc Caffery, Fergal; Mc Daid, Kevin; Flood, Derek
Fonte: EuroSPI Publicador: EuroSPI
Tipo: info:eu-repo/semantics/conferenceObject; all_ul_research; ul_published_reviewed
ENG
Relevância na Pesquisa
46.82%
peer-reviewed; Requirements validation, compliance verification and impact analysis are important activities that are performed during the software development lifecycle. Traceability of requirements through the software development lifecycle (SDLC) is essential in the development of safety critical software. Organisations such as the Food and Drug Administration and the Federal Aviation Authority in the United States require traceability as part of their approval process. However, despite its criticality there is extensive digression in the practices and usefulness of traceability across development projects. Many projects’ traceability efforts are simply focused on satisfying regulations and do not leverage the many benefits of traceability. Traceability, if fully implemented is an important tool for managing system development and there are a number of published best practices to help companies with this implementation. By means of a literature review we record a list of the commonly accepted best practices for traceability im-plementation. Furthermore, through interviews with two medical device companies we report that a number of these practices are unfamiliar to these companies and why an even greater number of these practices are not applied.

RFID enabled traceability networks: a survey

Wu, Y.; Ranasinghe, D.; Sheng, Q.; Zeadally, S.; Yu, J.
Fonte: Kluwer Academic Publ Publicador: Kluwer Academic Publ
Tipo: Artigo de Revista Científica
Publicado em //2011 EN
Relevância na Pesquisa
36.58%
The emergence of radio frequency identification (RFID) technology brings significant social and economic benefits. As a non line of sight technology, RFID provides an effective way to record movements of objects within a networked RFID system formed by a set of distributed and collaborating parties. A trail of such recorded movements is the foundation for enabling traceability applications.While traceability is a critical aspect of majority of RFID applications, realizing traceability for these applications brings many fundamental research and development issues. In this paper, we assess the requirements for developing traceability applications that use networked RFID technology at their core. We propose a set of criteria for analyzing and comparing the current existing techniques including system architectures and data models. We also outline some research opportunities in the design and development of traceability applications.; YanboWu, Damith C. Ranasinghe, Quan Z. Sheng, Sherali Zeadally and Jian Yu

An Initial Model of Requirements Traceability An Empirical Study

Ramesh, B.; Edwards, Michael V.; Abbott, Ann Grayson; Busch, Mona Rose
Fonte: Monterey, California. Naval Postgraduate School Publicador: Monterey, California. Naval Postgraduate School
Tipo: Relatório
ENG
Relevância na Pesquisa
36.72%
A primary concern in the development of large-scale, real-time, complex, computer-intensive systems is ensuring that the system meets the specified requirements. Further, the requirements themselves evolve and undergo many changes during the development process. In such a context, it is essential to maintain traceability of requirements to various outputs to ensure that the System meets the current set of requirements. An empirical study, utilizing focus group and protocol analysis techniques, was conducted with students from the Naval Postgraduate School in a simulated systems development environment. Based on the analysis of data, this study highlights several major issues that need to be considered in the development of a model of traceability. An initial model of traceability as well as recommendations for future research to refine and validate the model are presented

An investigation of requirements traceability to support systems development

Abbott, Ann Grayson; Busch, Mona R.
Fonte: Monterey, California. Naval Postgraduate School Publicador: Monterey, California. Naval Postgraduate School
Tipo: Tese de Doutorado
EN_US
Relevância na Pesquisa
36.64%
Approved for public release, distribution unlimited; A primary concern in the development of large-scale, real-time, complex, computer-intensive systems is ensuring that the system meets the specified requirements. Further, the requirements themselves evolve and undergo many changes during the development process. In such a context, it is essential to maintain traceability of requirements to various outputs to ensure that the systems meets the current set of requirements. An empirical study, utilizing focus group and protocol analysis techniques, was conducted with students from the Naval Postgraduate School. Their input, along with current literature, was used to explore factors to be taken into account while developing a model of traceability, and the appropriateness of the two data collection methods in future research.

An investigation of requirements traceability to support systems development

Harrington, Gale Alicia; Rondeau, Kathleen Marie
Fonte: Monterey, California. Naval Postgraduate School Publicador: Monterey, California. Naval Postgraduate School
Tipo: Tese de Doutorado
EN_US
Relevância na Pesquisa
46.37%
Approved for public release; distribution is unlimited.; Department of Defense Standard 2167A mandates that requirements traceability be conducted during the development of government systems. This and other standards, as well as current literature, however, do not provide a comprehensive model of what informat

A study on current practices of requirements traceability in systems development

Powers, Timothy Patrick; Stubbs, Curtis David
Fonte: Monterey, California. Naval Postgraduate School Publicador: Monterey, California. Naval Postgraduate School
Tipo: Tese de Doutorado
EN_US
Relevância na Pesquisa
46.75%
Approved for public release; distribution is unlimited.; The Department of Defense (DoD) currently spends approximately four percent of the total life cycle costs on requirements traceability efforts in large scale systems development. As current DoD standards that require traceability do not clearly specify what information should be captured and used, the practices and usefulness of traceability vary considerably across systems development efforts. The goal of this research is to conduct a comprehensive study of current practices to provide the various views and uses of traceability by the different stakeholders in the System Development Life Cycle (SDLC). Using a field study of 35 systems development organizations, this research profiles the low end users who use traceability only within their own domain of the SDLC and the high end users who view traceability as a means to force higher quality into systems design implementing a traceability methodology across all areas of systems development. Models describing low end and high end uses of traceability practice are also developed. Finally, a detailed case study of a DoD systems development organization was conducted providing a comprehensive view of use and perceived benefits of traceability.

Medical device standards' requirements for traceability during the software development lifecycle and implementation of a traceability assessment model

Regan, Gilbert; Mc Caffery, Fergal; Mc Daid, Kevin; Flood, Derek
Fonte: Elsevier Publicador: Elsevier
Tipo: info:eu-repo/semantics/article; all_ul_research; ul_published_reviewed
ENG
Relevância na Pesquisa
36.85%
peer-reviewed; Developing safety critical software is a complex process. Due to the fact that medical device software failure can lead to catastrophic consequences, numerous standards have been developed which govern software development in the medical device domain. Risk management has an important role in medical device software development as it is important to ensure that safe software is developed. Demonstrating traceability of requirements right throughout the medical device software development and maintenance lifecycles is an important part of demonstrating that ‘safe’ software has been produced through adopting defined processes. Consequently, medical device standards and guidelines emphasise the need for traceability. This paper outlines the extent and diversity of traceability requirements within medical device standards and guidelines, and identifies the requirements for traceability through each phase of the software development lifecycle. The paper also summarises the findings obtained when a lightweight assessment method (Med-Trace), that we created, based upon the traceability practices within these standards, was implemented in two SME organisations. Finally we highlight how the findings indicate a lack of guidance as to what is required when implementing and maintaining a traceability process.

Exploring a bayesian and linear approach to requirements traceability

Omoronyia, Inah; Sindre, Guttorm; Stalhane, Tor
Fonte: Association for Computing Machinery Publicador: Association for Computing Machinery
Tipo: Article; all_ul_research; ul_published_reviewed; none; none
ENG
Relevância na Pesquisa
56.77%
peer-reviewed; For large software projects it is important to have some traceability between artefacts from di erent phases (e.g., requirements, designs, code), and be- tween artefacts and the involved developers. This is especially critical during maintenance, when people working on the software may be di erent from the original developers and therefore have a harder struggle to understand the artefacts and the consequences of changes. However, if the capturing of traceability information during the project is felt as laborious to the original developers, they will often be sloppy in registering the relevant traceability links so that the information is incomplete. This makes automated tool- based collection of traceability links a tempting alternative, but this has the opposite challenge of generating too many potential trace relationships, not all of which are equally relevant. A key issue is therefore how to rank such auto-generated trace relationships. This paper presents two approaches for such a ranking: a Bayesian technique and a linear inference technique. Both techniques depend on the interaction event trails left behind by collaborating developers while working within a development tool. The advantage of our approach is that it can be used to provide traceability insights that are con- textual and would have been much more di cult to capture manually. The outcome of a preliminary study suggest the advantage of the linear approach...

Interactive Traceability Querying and Visualization for Coping With Development Complexity

Mäder, Patrick
Fonte: Universidade Cornell Publicador: Universidade Cornell
Tipo: Artigo de Revista Científica
Publicado em 22/01/2013
Relevância na Pesquisa
36.56%
Requirements traceability can in principle support stakeholders coping with rising development complexity. However, studies showed that practitioners rarely use available traceability information after its initial creation. In the position paper for the Dagstuhl seminar 1242, we argued that a more integrated approach allowing interactive traceability queries and context-specific traceability visualizations is needed to let practitioner access and use valuable traceability information. The information retrieved via traceability can be very specific to a current task of a stakeholder, abstracting from everything that is not required to solve the task.