Nonfunctional Requirements in Systems Analysis and Design

Adams, Kevin MacG.

doi:10.1007/978-3-319-18344-2

Cited by 35 publications

(26 citation statements)

References 55 publications

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“…Careful modeling and documentation must be done throughout the lifecycle process [42,71,72]. In addition to being a good engineering practice, this will ensure that waste of effort, time, and resources is kept to a minimum.…”

Section: Modeling and Documentationmentioning

confidence: 99%

“…These may include things such as meeting minimal performance and efficiency requirements, being able to be remotely shut off in an emergency, being able to localize itself once the job is started, and other functional requirements. • Non-functional requirements: These would contain the bulk of the general requirements and deal with things such as reliability, serviceability, supportability, and cost effectiveness [37,[42][43][44]. This list of requirements could be the most broad, as these may relate to things external to the system, such as local regulations and the desires of the user not related to mowing quality (e.g., color, noise level, IOS versus android user platform, etc.…”

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confidence: 99%

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Development of User-Integrated Semi-Autonomous Lawn Mowing Systems: A Systems Engineering Perspective and Proposed Architecture

2019

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This concept paper outlines a conceptual framework for the design and development of user-integrated semi-autonomous lawn mowing systems. This is approached from a systems engineering perspective, considering both hardware and software elements and integration with the user. This is an important and emerging field of study within the several engineering communities, including robotics, agricultural engineering, smart city development, and general systems engineering. In several sections of this paper, a review of current progress on this problem is presented (both in general and related to specific aspects of the system), followed by a discussion of the problem from a systems engineering perspective, a general system architecture developed by the authors, a preliminary set of design requirements, and a discussion of some practical implementation strategies. This work is meant to provide a baseline and motivation for the further development and refinement of these systems within the agricultural engineering and robotics communities and is relevant to both academic and commercial research.

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Section: Modeling and Documentationmentioning

confidence: 99%

mentioning

confidence: 99%

Development of User-Integrated Semi-Autonomous Lawn Mowing Systems: A Systems Engineering Perspective and Proposed Architecture

2019

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“…This characteristic feature makes the measured data of Stirling cryocooler limited, thus HI construction is a challenging task. 28,29 In this article, we extract HIs related to the failure physics using signal processing. Table 2 shows the monitoring information of the Stirling cryocooler in this article.…”

Section: Three Hismentioning

confidence: 99%

Health indicator construction and remaining useful life prediction for space Stirling cryocooler

Song

Liang

Teng

et al. 2019

Advances in Mechanical Engineering

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Stirling cryocoolers are widely used to refrigerate significant facilities in military and aerospace applications. However, under the influences of high-frequency piston motion and thermal environment deterioration, the refrigerating performance of Stirling cryocoolers will worsen inevitably, thus affecting the successful accomplishment of space mission. In this article, a methodology on assessing the performance of space Stirling cryocoolers is proposed, which involves the analysis of the failure mechanism, health indicator construction and remaining useful life prediction of the cryocooler. The potential factors affecting the refrigerating performance are discussed first. In view of these, three health indicators representing the degradation process of cryocoolers are constructed and then a multi-indicator method based on particle filter is proposed for remaining useful life prediction. Finally, the proposed method is validated by a Stirling cryocooler from one retired aircraft, and the results show that the constructed health indicators and remaining useful life prediciton approaches are effective for performance assessment of Stirling cryocooler.

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“…Doing so provides a plethora of emergent properties, cybernetics, and related information used in a wide range of applications. The challenge is that some of the information that emerges from systems analysis is not entirely intuitive or always easily interpretable, but advances in the systems analytic discipline over the past several decades have increased the familiarity and ease of interpretation of these outputs (Adams 2015). In essence, a systems approach acknowledges that there are myriad processes, connections, and "components" in any given system and that combined these are both highly complex and interactive.…”

Section: Introductionmentioning

confidence: 99%

System-level optimal yield: increased value, less risk, improved stability, and better fisheries

Link

2018

Can. J. Fish. Aquat. Sci.

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Abstract:The discipline and practice of fisheries science and management have had an useful, successful, and interesting history. The discipline has developed over the past century and a half into a very reductionist, highly quantitative, socially impactful endeavor. Yet given our collective successes in this field, some notable challenges remain. To address these challenges, many have proposed ecosystem-based fisheries management that takes a more systematic approach to the management of these living marine resources. Here I describe systems theory and associated constructs underlying system dynamics, elucidate how aggregate properties of systems can and have been used, contextualize these aggregate features relative to optimal yield, and note how this approach can produce useful estimates and outcomes for fisheries management. I explore two contrasting examples where this approach has and has not been considered, highlighting the benefits of applying such an approach. I conclude by discussing ways in which we might move forward with a portfolio approach for both the discipline and practice of fisheries science and management.Résumé : La discipline et la pratique des sciences halieutiques et de la gestion des pêches ont une histoire utile, intéressante et couronnée de succès. La discipline est devenue, au cours du dernier siècle et demi, une entreprise très réductionniste, hautement quantitative et à forte incidence sociale. Malgré nos réussites collectives dans ce domaine, des défis notables demeurent. Pour relever ces défis, de nombreuses personnes ont proposé une gestion écosystémique des pêches qui adopte une approche plus systématique de gestion de ces ressources marines vivantes. Je décris la théorie des systèmes et les constructions associées qui sous-tendent la dynamique des systèmes, j'explique comment les propriétés groupées de systèmes peuvent être utilisées et l'ont été, je mets ces éléments groupés dans un contexte de rendement optimal et je souligne comment cette approche peut produire des estimations et des résultats utiles pour la gestion des pêches. J'explore deux exemples dans lesquels cette approche a, d'une part, été prise en considération et, d'autre part, ne l'a pas été, afin de souligner les avantages de son application. Je conclus en discutant d'avenues possibles pour l'avenir qui reposent sur une approche de portefeuille tant pour la discipline que pour la pratique des sciences halieutiques et de la gestion des pêches. [Traduit par la Rédaction]

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Nonfunctional Requirements in Systems Analysis and Design

Cited by 35 publications

References 55 publications

Development of User-Integrated Semi-Autonomous Lawn Mowing Systems: A Systems Engineering Perspective and Proposed Architecture

Development of User-Integrated Semi-Autonomous Lawn Mowing Systems: A Systems Engineering Perspective and Proposed Architecture

Health indicator construction and remaining useful life prediction for space Stirling cryocooler

System-level optimal yield: increased value, less risk, improved stability, and better fisheries

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