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About

TÂNIA ROCHA received her M.Sc. and Ph.D. degrees in Multimedia and Informatics from the University of Trás-os-Montes e Alto Douro, Vila Real, Portugal, in 2009 and 2014. Since 2010, she has been an Invited Assistant at the University of TraÌ�s-os-Montes e Alto Douro, where she is currently lecturing on accessibility, communication and multimedia.  She is a Collaborator Researcher at INESC Technology and Science – INESC TEC Oporto. Her main research interests are in the domain of Human-Computer Interaction, with focus on Multimedia, Universal design, Digital Accessibility and Usability, Assistive Technologies and Special Education.

Interest
Topics
Details

Details

  • Name

    Tânia Vilela Rocha
  • Cluster

    Computer Science
  • Role

    Senior Researcher
  • Since

    06th November 2013
001
Publications

2017

Usability evaluation of navigation tasks by people with intellectual disabilities: a Google and SAPO comparative study regarding different interaction modalities

Authors
Rocha, T; Carvalho, D; Bessa, M; Reis, S; Magalhães, L;

Publication
Universal Access in the Information Society

Abstract
This paper presents a case study regarding the usability evaluation of navigation tasks by people with intellectual disabilities. The aim was to investigate the factors affecting usability, by comparing their user-Web interactions and underline the difficulties observed. For that purpose, two distinct study phases were performed: the first consisted in comparing interaction using two different search engines’ layouts (Google and SAPO) and the second phase consisted in a preliminary evaluation to analyze how users performed the tasks with the usual input devices (keyboard and mouse) and provide an alternative interface to help overcome possible interaction problems and enhance autonomy. For the latter, we compared two different interfaces: a WIMP-based one and speech-based one. The main results obtained showed that users had a better performance with Google (with a simpler layout) than with SAPO (with a complex layout), and despite displaying a good keyboard handling ability, they did not show autonomy using this input device (due to the need for reading/writing when handling this device). In this perspective, Google’s speech recognition application could indeed be considered an alternative for interaction. However, we found that the speech recognition interface is not as robust as it should be: it could be more precise and less prone to errors due to poor word pronunciation. After this two-phased study, we think we may be able to infer some recommendations to be used by developers in order to create more intuitive layouts for easy navigation regarding this group of people, and thereby facilitate digital inclusion. © 2016 Springer-Verlag Berlin Heidelberg

2016

Combining NFC and 3D Mapping to Enhance the Perception of Spatial Location for the Blind

Authors
Rocha, T; Fernandes, H; Paredes, H; Barroso, J;

Publication
Universal Access in Human-Computer Interaction: Users and Context Diversity, Pt III

Abstract
In this paper a 3D map solution combined with a mobile phone application is presented. This solution enables blind users to perceive their spatial location from tactile stimulation, but also contextual information from a mobile application that provides this information via mobile phone, using audio. In the proposed model, 3d map sections embedding NFC technology support the application scenario described in this work.

2016

How Ill is Online Health Care? An Overview on the Iberia Peninsula Health Care Institutions Websites Accessibility Levels

Authors
Martins, J; Goncalves, R; Branco, F; Pereira, J; Peixoto, C; Rocha, T;

Publication
NEW ADVANCES IN INFORMATION SYSTEMS AND TECHNOLOGIES, VOL 2

Abstract
The current urge on using Internet for both social and professional tasks, alongside with the existence of over 80 million European citizens with some sort of disability as led to the need for an accessible Web [1]. Given, the also increasing thrive for searching the web for health related information and the assumption of heath care institutions as the creators of this type of information, a research study was developed in order to evaluate the accessibility levels of the Iberian health care institutions. From this study, that used ACESSWEB as the evaluation platform, it was possible to perceive that none of the evaluated websites was WCAG 2.0 compliant and that, despite the poor results, Spanish websites presented more accessibility concerns than the Portuguese. Hence, the situation is critical and a significant effort must be done in order to allow citizens with disabilities to have access to the much needed health related information.

2016

Performing universal tasks using a mini iPad: usability assessment per people with intellectual disabilities

Authors
Rocha, Tania; Bessa, Maximino; Cabral, Luciana;

Publication
Proceedings of the XVII International Conference on Human Computer Interaction, Interacción 2016, Salamanca, Spain, September 13 - 16, 2016

Abstract
With this study we aim at assessing if a mini iPad device is a usable option for digital interaction to perform selection, manipulation, and insertion tasks by people with intellectual disabilities. This study builds on previous studies where usability was evaluated for universal tasks using the keyboard and a mouse input device [1]. This allowed us to assess the usability of a small mini iPad and compare it with other two input devices, namely keyboards and the mouse. For usability assessment we registered the following variables: successful conclusion of activities, type of difficulties found, errors and satisfaction indicators. The results showed that this group was much motivated to learn how to handle with the iPad, several asked to repeat the task and no one quit any task requested. Despite the number of errors as registered in their interaction, they always knew how to overcome the error and never showed frustration or demotivation. Furthermore, they had a good performance (relation between variables: time to conclude the task, number of errors and difficulties felt) with the mini iPad device, however when compared with the keyboard and mouse, their performance increased. © 2016 ACM.

2016

Presence in Virtual Environments: Objective Metrics vs. Subjective Metrics - A Pilot Study

Authors
Melo, M; Rocha, T; Barbosa, L; Bessa, M;

Publication
2016 23RD PORTUGUESE MEETING ON COMPUTER GRAPHICS AND INTERACTION (EPCGI)

Abstract
The sense of presence and cybersickness are keyfactors to have into account when referring to Virtual Environments (VE). To achieve high levels of presence and minimize cybersickness, it is important to ensure that the user's stimulation is coherent with the contents that are being delivered. In this paper, it is presented a pilot study addressing the usage of both objective and subjective metrics to measure the sense of presence and cybersickness in VE in order to study possible correlations between these two evaluation approaches. On top of that, the pilot study includes two body positions to allow evaluating if the stimulation of the vestibular study has impact on the sense of presence and cybersickness. To evaluate presence and cybersickness, it was developed a VE that consists in a hill where participants ride a bicycle. To broaden the scope of the study, there were studied two body positions: standing and sitting on the bicycle. The equipment EMOTIV epoc+ was used to register the objective metrics. The subjective metrics were registered using the Igroup Presence Questionnaire (IPQ) and the Simulator Sickness Questionnaire (SSQ). To complement the collected data, the levels of fatigue and stress before and after the experience were also registered through self-evaluation. Results show that objective metrics Interest and Stress and the subjective metrics Realism, Fatigue and Stress have a positive interaction regarding the sense of presence. Results further suggest that there is a positive interaction between the objective metric Focus and the subjective metric Involvement.

Supervised
thesis

2017

Solução tecnológica para a inclusão digital de pessoas com deficiência intelectual

Author
Jorge Luís Rocha dos Santos

Institution
UTAD

2017

Arte Visual Acessível: a técnica de colagem digital

Author
Marta Maria Pedro Tavares Amaral Resende

Institution
UTAD

2017

Um modelo de valor de entrega de informação aplicado ao Governo eletrónico

Author
José Augusto de Araújo Monteiro

Institution
UTAD

2017

Presença da cultura Geek nos medias Portugueses

Author
Joana Filipa Dias Peniche

Institution
UTAD

2017

Importância de um Gabinete de Comunicação no serviço hospitalar: Caso de Estudo Hospital de Vila Real

Author
Iolanda Carvalho de Ferreira Gonçalves

Institution
UTAD