Browsing by Author "Collaguazo Malla, Christian Xavier"

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Método para el diseño de interfaces de usuario orientadas al adulto mayor, que incluyen modalidades de comunicación aumentativa y alternativa simbólica soportadas por medios tecnológicos
(Universidad de Cuenca, 2021-09-09) Collaguazo Malla, Christian Xavier; Sánchez Sánchez, William Andrés; Cedillo Orellana, Irene Priscila
Today, the older adult population is increasing. Considering that their situation is vulnerable, older adults face various problems related to their age; among the most common are those linked to physical, hearing and visual impairment that greatly affect the way they communicate and interact with other people. These consequences lead to the emergence of new technologies and methods to improve their quality of life. In the present document, a new method called UIAAC has been proposed, which aims to guide developers in the design and creation of graphical interfaces for augmentative and alternative communication systems aimed at the elderly, which incorporate pictograms as a medium of communication. In other words, software developers can design quality interfaces by following a process that encompasses tasks from contextualization to implementing a functional interface. Finally, a web application has been developed to help improve the communication of an older adult, whose interfaces have been designed following the process of the proposed method, in order to validate its applicability. Also, a quasi-experiment has been carried out to evaluate the method's usability evaluation task, from which results were obtained that validate the evaluation process.
UIAAC: a method for design of graphical user interface for augmentative and alternative communication
(SciTePress Digital Library (Science and Technology Publications, Lda), 2021) Prado Cabrera, Katerine Daniela; Cedillo Orellana, Irene Priscila; Sánchez Sánchez, William Andrés; Collaguazo Malla, Christian Xavier
The world's population is aging, which is reflected in the increased proportion of older adults, both in developed and developing countries. In 2019, 1 in 11 people exceeded 65 years old; and it is projected that by 2050, this proportion will be 1 in 6 people. Among the most common problems older adults face are those linked to physical, auditory, and visual impairment and, affect, the way they communicate and interact with others. While the usual way of communication is through speech, 1.3% do not depend on verbal language, and as a result, their communication needs are not met. Therefore, it is necessary to search for other modes of communication (apart from speech), which are used to express thoughts, needs, desires, and ideas. An option is Augmentative and Alternative Communication (AAC), which presents methods and technology to help people develop or regain communication ability. Thus, this document presents a method called UIAAC, which aims to facilitate the design of graphical user interfaces for AAC systems oriented to older adults and incorporate pictograms as a means of communication. The presented method is aligned with usability standards and considerations of experts in AAC, gerontology, software quality engineers, and user-centered design. To assess the feasibility of the method, the design of a prototype interface and a case study that assesses the perception of the prototype's use is presented. The evaluation was developed from the point of view of the psychological area and the end-user (older adult)
Usability model of augmentative and alternative communication systems and pictographic systems in people with disabilities
(IEEE, 2021) Cedillo Orellana, Irene Priscila; Abad Rojas, Freddy Andrés; Sánchez Sánchez, William Andrés; Collaguazo Malla, Christian Xavier; Cuvi Brito, Jonnathan Darwin; Prado Cabrera, Katerine Daniela
Technological Augmentative and Alternative Communication Systems (AACS) based on pictograms are used concurrently today. They are expressed differently from oral language and compensate for communication difficulties with some verbal language limitations. Due to the specific requirements by people with special abilities, those systems must guarantee satisfaction, efficiency, and effectiveness during the users' communication. Also, the usability of those applications must demonstrate high usability characteristics. In this context, this paper presents an AACSS usability model, which can be used to evaluate pictographic systems oriented to people with disabilities. This contribution is based on a quality approach to assessing the quality of this kind of software product. The model is aligned with the ISO/IEC 25010 standard, which defines a set of main usability characteristics. Additionally, the ISO 14915-1 standard was considered, which addresses user interfaces for applications that incorporate text and interactive multimedia. Likewise, the ISO 9241-210 standard was used, which proposes characteristics, sub-characteristics, and metrics through design guides of Human-Computer Interfaces for interactive systems. The standards above allow the establishment of characteristics, sub-characteristics, attributes, and metrics of AACSs to quantify each attribute and identify any usability problems that may exist. Also, it is presented an evaluation method that uses the given usability model. Finally, an experiment that applies the proposed solution is carried out in which users have evaluated two pictographic AACSS mobile applications.
VitaApp: augmentative and alternative communication system aimed at older adults
(Springer Verlag, 2021) Cárdenas Delgado, Paúl Esteban; Cedillo Orellana, Irene Priscila; Prado Cabrera, Katerine Daniela; Collaguazo Malla, Christian Xavier; Sánchez Sánchez, William Andrés; Cedillo Orellana, Irene Priscila
Augmentative and Alternative Communication Systems (AACs) is an important study area for people who need alternative ways to communicate their ideas. An AAC web system based on pictograms for the elderly VitaApp is pre- sented in this paper. The system results from the implementation of the last phase of the UIAAC method, which guides the design and implementation of AAC systems aimed at older adults. VitaApp is based on a client-server architecture, divided into three roles: a) administrator, carer: these oversee customizing the interface and have dedicated web applications; b) elderly: they use the AAC application that their caregiver personalizes for them. The graphical interface of the AAC application is evaluated through a case study that was applied to an older adult, his caregiver, and a clinical psychologist; in this, the ease of use, usefulness, and future use of the web application were evaluated. The results show that its users perceive VitaApp as an alternative communication support tool, useful, easy to use, and considered to be used in the future. © 2021, Springer Nature Switzerland AG.