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Article

A Study on the Relationship between Usability of GUIs and Power Consumption of a PC: The Case of PHRs

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Department of Computer Science and Systems, University of Murcia, 30100 Murcia, Spain
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Department of Computer Science and Software Engineering, UAE University, Al Ain 15551, United Arab Emirates
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Author to whom correspondence should be addressed.
Academic Editors: Eunil Park and Peter J. Bentley
Int. J. Environ. Res. Public Health 2021, 18(4), 1385; https://0-doi-org.brum.beds.ac.uk/10.3390/ijerph18041385
Received: 30 November 2020 / Revised: 23 January 2021 / Accepted: 28 January 2021 / Published: 3 February 2021
(This article belongs to the Special Issue Sustainable Software for Health)
Usability is key to achieve quality in software products. The client applications with a high score in usability might impact on the power consumption when they are run in a PC. For this reason, energy savings turn to be critical in green software systems. In this paper the relationship between the usability evaluations of the GUIs and the power consumption measurements of the main components of a PC were analysed. A set of 5 web-based personal health records (PHRs) were selected as a case study. The usability assessment was performed by an expert, employing the 14 principles of design by Alan Dix as heuristics. They were scored on a Likert scale after performing a collection of common tasks in the PHRs. At the same time, an equipment to measure the energy consumption of hard disk drive, graphics card, processor, monitor and power supply was used. Spearman’s index was studied for the correlations between the usability assessments and the power consumption measurements. As a results, some weak relationships were found. A total of 5 usability heuristics were observed to may influence energy consumption when they were considered in the implementation of the PHRs. These heuristics were the following ones: consistency, task migratability, observability, recoverability and responsiveness. Based on the results, the usability principles of design cannot always be related to lower energy consumption. Future research should focus on the tradeoffs between usability and power consumption of client applications when they are used in a computer. View Full-Text
Keywords: personal health records; energy efficiency; usability; environmental sustainability personal health records; energy efficiency; usability; environmental sustainability
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MDPI and ACS Style

García-Berná, J.A.; Ouhbi, S.; Fernández-Alemán, J.L.; Carrillo de Gea, J.M.; Nicolás, J.; Moros, B.; Toval, A. A Study on the Relationship between Usability of GUIs and Power Consumption of a PC: The Case of PHRs. Int. J. Environ. Res. Public Health 2021, 18, 1385. https://0-doi-org.brum.beds.ac.uk/10.3390/ijerph18041385

AMA Style

García-Berná JA, Ouhbi S, Fernández-Alemán JL, Carrillo de Gea JM, Nicolás J, Moros B, Toval A. A Study on the Relationship between Usability of GUIs and Power Consumption of a PC: The Case of PHRs. International Journal of Environmental Research and Public Health. 2021; 18(4):1385. https://0-doi-org.brum.beds.ac.uk/10.3390/ijerph18041385

Chicago/Turabian Style

García-Berná, José A., Sofia Ouhbi, José L. Fernández-Alemán, Juan M. Carrillo de Gea, Joaquín Nicolás, Begoña Moros, and Ambrosio Toval. 2021. "A Study on the Relationship between Usability of GUIs and Power Consumption of a PC: The Case of PHRs" International Journal of Environmental Research and Public Health 18, no. 4: 1385. https://0-doi-org.brum.beds.ac.uk/10.3390/ijerph18041385

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