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Toval Álvarez, Jose Ambrosio

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Toval Álvarez, Jose Ambrosio
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Universidad de Murcia. Departamento de Informática y Sistemas
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    Surveying the environmental and technical dimensions of sustainability in software development companies
    (MDPI, 2018-11-20) García Berná, José Alberto; Carrillo de Gea, Juan Manuel; Moros Valle, Begoña; Fernández Alemán, José Luis; Nicolás Ros, Joaquín; Toval Álvarez, Jose Ambrosio; Informática y Sistemas
    The growing concern over the state of degradation of the environment has led to a consideration of aspects relating to sustainability in software. Bearing this in mind, we have carried out a survey of practitioners, aiming to gather information about their awareness of sustainable software, not only during the development process, but also throughout the period in which the software is used. Using the data gathered, we studied professionals’ perspectives on sustainability in software development, and were able to get a picture of the current situation of the application of sustainability practices in this sector. We focused on the environmental and technical dimensions of sustainability aimed at extending the longevity of information systems and making them more energy efficient. From the results, we observed that there is a widespread desire to pursue sustainable behavior at work, even though there are not always clear guidelines on how to proceed in this endeavor.
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    Green IT and sustainable technology development: bibliometric overview
    (Wiley, 2019-01-21) García Berná, José Alberto; Fernández Alemán, José Luis; Carrillo de Gea, Juan Manuel; Nicolás Ros, Joaquín; Moros Valle, Begoña; Toval Álvarez, Jose Ambrosio; Mancebo, Javier; García, Félix; Calero, Coral; Informática y Sistemas
    Green information technologies (GITs) constitute a field of research, whose objective is to reduce the environmental pollution caused by masses of people using and producing technology. This paper describes the search for literature related to GIT and technology sustainability in Scopus database. No restriction was imposed on the time period when carrying out the search. The data gathered revealed that the journal with the highest number of publications is Computer, and the most prolific author is Tomoya Enokido, with 45 publications. A total of 53.12% of the documents found in Scopus were Conference Paper. Although no statistically significant differences were detected, countries in the group with less CO2 kton emissions per inhabitant and less income per capita have a higher percentage of publications. The reduction of power consumption in the cloud data centers is a hot topic for future work, because the word cloud appeared in 9 out of the 10 most frequently cited papers.
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    Energy efficiency in software: a case study on sustainability in personal health records
    (Elsevier, 2021-02-01) García Berná, José Alberto; Fernández Alemán, José Luis; Carrillo de Gea, Juan Manuel; Toval Álvarez, Jose Ambrosio; Mancebo, Javier; Calero, Coral; García, Félix; Informática y Sistemas
    A personal health record is an eHealth technology in which users can observe their progress over time for a given condition. A research gap was identified in the literature concerning the study of the amount of energy that these systems need for their operation, and the energy efficiency that may be attained depending on their design. After the selection of five representative personal health records, a total of 20 tasks commonly done, and based on previous work, were performed with regard to two proposed scenarios, namely patient use and health personnel usage. The power consumption of the main components of a host machine was measured during the performance of the proposed duties. To that end, a hardware tool called the Energy Efficiency Tester was employed. The data collected were analyzed statistically, and significant differences were found in the respective consumption of the display (χ2 (4) = 23.782, p = 0.000), the processor (χ2 (4) = 29.018, p = 0.000) and the whole PC (χ2 (4) = 28.582, p = 0.000). For all of these components, NoMoreClipBoard was the personal health record that required the least energy (57.699 W for the display, 3.162 W for the processor and 181.113 W for the whole PC). A total of two strong correlations were found in the energy consumption between the hard disk and the graphics card (r = 0.791, p < 0.001), and the processor and the PC (r = 0.950, p < 0.001). Some features generated special amounts of power consumption, such as the news wall found on PatientsLikeMe, or the use of load icons that had an impact on most PC components. In addition, an in-depth analysis of the user interfaces was performed. A discussion was carried out on the design of the user interfaces, also taking into account recommendations drawn from the literature, checking for their implementation in the personal health records selected. With the aim of promoting sustainability among software developers, a best practice guideline on sustainable software design was proposed. Basic sustainability recommendations were collected for professionals to consider when developing a software system in general, and a personal health record in particular.
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