Arias Flores, Hugo Patricio
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Arias Flores, Hugo Patricio
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Quito
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hugoarias@uti.edu.ec
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57210802646

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Profiling of E-Learning Users with Accessibility Needs

2021 , Calle-Jimenez T. , Sanchez-Gordon S. , Arias Flores, Hugo Patricio

Currently, there are millions of people who are studying professional training using e-Learning environments. A trend that has been exacerbated by the global health crisis caused by the COVID-19 virus pandemic. This circumstance has forced students around the world to switch to an emerging online modality in 2020. E-Learning environments has become an important option, maybe the only one, to keep studying, as long as these environments and the educational resources they host are accessible. In this context, it is relevant to have a mechanism to describe the accessibility preferences and need of students through the management of personal profiles. In this study, authors carried out a literature review regarding models designed to enable the creation of profiles in the Massive Open Online Courses (MOOCs) and presents an analysis of scientific research published by other researchers and shows the current state of the art of the research area of profiling of students with disabilities in MOOC platforms. This literature review will serve as input to propose a model that allows covering the lack of profiling of students with disabilities within e-Learning platforms to meet the needs of students who have disabilities. As far as we know, this is the first literature review of this kind. © 2021, The Author(s), under exclusive license to Springer Nature Switzerland AG.

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Contributions to Improve Accessibility and Usability of Academic Journal Management Systems. Case Study: OJS

2020 , Arias Flores, Hugo Patricio , Calle-Jimenez T. , Sanchez-Gordon S. , Nunes I.L.

Assistive technologies have allowed people with disabilities to overcome many barriers. For instance, people with visual disabilities are able to access information on the Web by using screen readers and generating different actions in their navigation, which would not be possible without assistive technology. The generation of accessible resources and understanding user behavior from the journal editorial process point of view have created changes in the editorial process itself, from the reception to the publication of the articles. In this digital age, in which information has become global and open to a diverse population, resources should be accessible. Unfortunately, this is not usually the case. Resources must be made accessible to people with different conditions, including visual and hearing impairments. The goal of this study is to identify the challenges faced by a person with a visual disability during the editorial process of journals on the Open Journal Systems (OJS) platform. Such challenges include understanding the layout of the elements and controls on the platform interface, creating HTML versions of academic articles, configuring journal websites, and so on. The aim of addressing these challenges is to create accessible resources that can be used by all readers of OJS journals regardless of their conditions. The information presented in this study was collected over six months, and a descriptive analysis was performed. It can be noted that some accessible resources have already been implemented, such as the presentation of academic articles in MP3 format (which can be downloaded or reproduced online) and the publication of HTML versions of complete articles with navigation levels. There is also a video resource in which authors expose their research, and the articles themselves are presented in an accessible PDF format (which respects levels of accessibility that allow greater reading enjoyment for users with vision impairments). These contributions allow people with visual disabilities to better integrate into editorial teams of scientific journals. Work continues so that the resources published on the OJS platform can reach readers with disabilities at greater regional and global levels. © 2020, The Editor(s) (if applicable) and The Author(s), under exclusive license to Springer Nature Switzerland AG.

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Analysis of the Level of Accessibility of Scientific Online Conferences for Blind Participants

2021 , Arias Flores, Hugo Patricio , Sanchez-Gordon S. , Calle-Jimenez T.

The change generated by the virtualization of activities due to the COVID-19 pandemic has transformed the way people participate in countless activities. Scientific conferences, like many other events, were forced by the circumstances to change from face-to-face to online overnight. The goal of this study is to identify the accessibility barriers that the platforms used by scientific online conferences pose for blind participants. The research methodology used was experiential introspection complemented by automated testing. Exploratory tests were conducted by a blind researcher using the JAWS screen reader. Besides, the accessibility evaluation tool WAVE was used to identify non-conformances with the web content accessibility guidelines WCAG. As a result, it was found in some cases a null level of accessibility and, in other cases, complexity was detected in the access to activities. As for no conformances with WCAG, two of the most prominent were empty links and the absence of headings for efficient screen reader navigation. The automated tool showed errors and alerts that need to be fixed in the teleconferencing platforms evaluated. It is presumed that, unfortunately, the moderately or even basic concepts for the participation of users with visual disabilities and blind are not being considered in the platforms used to host virtual scientific conferences. © 2021, The Author(s), under exclusive license to Springer Nature Switzerland AG.

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Detection of Student Behavior Profiles Applying Neural Networks and Decision Trees

2020 , Guevara Maldonado, César Byron , Sanchez-Gordon S. , Arias Flores, Hugo Patricio , Varela Aldas, José , Castillo Salazar, David Ricardo , Borja M. , Fierro-Saltos W. , Rivera R. , Hidalgo-Guijarro J. , Yandún-Velasteguí M.

Education worldwide is a significant aspect for the development of the peoples and much more in developing countries such as those in Latin America, where less than 22% of its inhabitants have higher education. Research in this field is a matter of interest for each of the governments to improve education policies. Therefore, the analysis of data on the behavior of a student in an educational institution is of utmost importance, because multiple aspects of progress or student dropout rates during their professional training period can be identified. The most important variables to identify the student’s behavior are the socio-economic ones, since the psychological state and the economic deficiencies that the student faces while is studying can be detected. This data provides grades, scholarships, attendance and information on student progress. During the first phase of the study, all the information is analyzed and it is determined which provides relevant data to develop a profile of a student behavior, as well as the pre-processing of the data obtained. In this phase, voracious algorithms are applied for the selection of attributes, such as greedy stepwise, Chi-squared test, Anova, RefiefF, Gain Radio, among others. In this work, we apply the artificial intelligence techniques, the results obtained are compared to generate a normal and unusual behavior of each student according to their professional career. In addition, the most optimal model that has had a higher accuracy percentage, false positive rate, false negative rate and mean squared error in the tests results are determined. © Springer Nature Switzerland AG 2020.

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Communication Support for Older Adults Through Pictograms

2023 , Arias Flores, Hugo Patricio , Zapata M. , Sanchez-Gordon S. , Cedillo P.

Changes generated by the pandemic have stimulated new forms of communication through technological devices. Thanks to these, augmentative and alternative communication through the use of pictograms has allowed the development of communicative capacity for people who face health problems, such as speech, limited motor skills, hearing, among others. In particular, for segments of the elderly population with limited communication and technology management skills, it is important to consider usability and accessibility criteria in technological support interfaces design, in order to provide a satisfying and non-intrusive user experience. Support activities must be pleasant and transparent for the effective users’ communication with their environment. In this context, the article presents a methodology for the design of an augmentative communication solution based on pictograms, with the purpose of transmitting the message from the user to the receiver. This article proposes a systematic review of the literature on augmentative and alternative communication, as well as the use of existing pictograms and technologies. The systematic review protocol considered the choice of four digital libraries for the search. The method of search and selection of technological solutions was based on the search for Apps and websites for the use of pictograms through technology to automate and support the communication of elderly. © 2023, The Author(s), under exclusive license to Springer Nature Switzerland AG.

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Model for Generation of Profiles for Persons with Disabilities in e-Learning Environments

2020 , Sanchez-Gordon S. , Jadán Guerrero, Janio , Arias Flores, Hugo Patricio , Nunes I.L.

Education is a fundamental human right recognized in the Universal Declaration of Human Rights. Current e-Learning environments enable education at large scale with reduced costs. Unfortunately, persons with disabilities (PWD) experience barriers to access these platforms and the educational resources they host. To contribute with solving this problem, this study presents a model for the generation of profiles for PWD in e-Learning environments. The model proposed in this study allows registering accessibility needs and preferences regarding the use of different sensory modes for the perception and understanding of information depending on the current life situation of the PWD. The model is based on the specification IMS Access for All 3.0 PNP and the standard ISO/IEC 24751-2. The validation of the model was carried out with a high-fidelity functional prototype that was tested with automated tools and by users with blindness, low vision and color blindness. © 2020, The Editor(s) (if applicable) and The Author(s), under exclusive license to Springer Nature Switzerland AG.

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