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A user task design notation for improved software design

ABSTRACT: System design is recognized as one of the most critical components of a software system that bridges system requirements and coding. System design also has a significant impact on testing and maintenance activities, and on further improvements during the lifespan of the software system. Software design should reflect all necessary components of the requirements in a clear and understandable manner by all stakeholders of the software system. To distinguish system elements, separation of concerns in software design is suggested. In this respect, identification of the user tasks, i.e., the tasks that need to be performed by the user, is not currently reflected explicitly in system design documents. Our main assumption in this study is that software quality can be improved significantly by clearly identifying the user tasks from those that need to be performed by the computer system itself. Additionally, what we propose has the potential to better reflect the user requirements and main objectives of the system on the software design and thereby to improve software quality. The main aim of this study is to introduce a novel notation for software developers in the frame of UML Activity Diagram (UML-AD) that enables designers to identify the user tasks and define them separately from the system tasks. For this purpose, an extension of UML-AD, named UML-ADE (UML-Activity Diagram Extended) was proposed. Afterwards, it was implemented in a serious game case for which the specification of user tasks is extremely important. Finally, its effectiveness was analyzed and compared to UML-AD experimentally with 72 participants. The defect detection performance of the participants on both diagrams with two real-life serious game scenarios was evaluated. Results show a higher level of understandability for those using UML-ADE, which in turn may indicate a better design and higher software quality. The results encourage researchers to develop specific design representations dedicated to task design to improve system quality and to conduct further evaluations of the impact of these design on each of the above mentioned potential benefits for the software systems.

SUBMITTER: Ozcan E

PROVIDER: S-EPMC8156997 | biostudies-literature |

REPOSITORIES: biostudies-literature

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Project description:BackgroundDigital stress management interventions are considered promising additions to the spectrum of the programs companies use to support the well-being of their employees. However, a series of constraints are identified that hinder the potential benefits of such interventions. These constraints include a lack of user engagement and personalisation, poor adherence and high attrition. Understanding the specific user needs and requirements is essential to increase the likelihood of success in implementing ICT (Information and Communication Technology)-supported stress management interventions. Thus, following the findings from a previous quantitative study, the proposed study aimed to further explore the user needs and requirements for designing digital stress management interventions for software employees in Sri Lanka.MethodsThe study used a qualitative approach based on three focus groups with 22 software employees in Sri Lanka. The focus group discussions were conducted online and recorded digitally. Inductive thematic analysis was used to analyse the collected data. The consolidated criteria for reporting qualitative studies (COREQ)-32 items were followed for reporting this study.ResultsThe analysis revealed three major themes: self-help in a personal space, social support in a collaborative space, and general design considerations for achieving success. The first theme revealed the users' preference for having a personal space where they could engage in individual activities without support from an external party. The second theme elaborated on the importance of adding a collaborative platform to seek help from peers and professionals. The final theme explored the user-desired design features that could increase user engagement and adherence.ConclusionsThis study used a qualitative approach to further explore the findings of a previous quantitative study. The focus group discussions confirmed the results of the previous study and provided the opportunity to better understand user needs and yield new insights. Such insights revealed user preference for embedding personal and collaborative platforms in a single intervention, embedding gamified elements, the provision of passive content generation via sensory systems, and the need for personalisation. These empirical findings will feed into the design of ICT-supported interventions for occupational stress management among Sri Lankan software employees.

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A user task design notation for improved software design

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