Ana Filipa Rosa
University of Aveiro
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Featured researches published by Ana Filipa Rosa.
Procedia Computer Science | 2014
Flávio Ferreira; Nuno Almeida; Ana Filipa Rosa; André Oliveira; José Casimiro; Samuel S. Silva; António J. S. Teixeira
Abstract Several aspects of older adults’ life can benefit from recent technological developments, but success in harnessing this potential depends on careful design and accessible, easy to use products. Design and development must be centered on the elderly and adequately consider interaction. In this paper we follow this design approach and put it to the test in developing a concrete application, aimed to contribute to lower the high levels of non-adherence to medication in the elderly population. The “Medication Assistant” application was developed following an iterative method centered, from the start, on the elderly and interaction design. The method repeats short-time development cycles integrating definition of scenarios and goals, requirements engineering, design, prototyping and evaluation. Evaluation, by end-users, of the increasingly refined prototypes, is a key characteristic of the method. The evaluation results provide information related to strengths and weaknesses of the application and yield suggestions regarding changes and improvements, valuable support further development. Results regarding evaluation of the second prototype of “Medication Assistant” are presented.
Procedia Computer Science | 2015
Ana Isabel Martins; Ana Filipa Rosa; Alexandra Queirós; Anabela G. Silva; Nelson Pacheco da Rocha
Abstract The System Usability Scale (SUS) is a widely used self-administered instrument for the evaluation of usability of a wide range of products and user interfaces. The principal value of the SUS is that it provides a single reference score for participants’ view of the usability of a product or service. This paper presents the translation, cultural adaptation and a contribution to the validation of the European Portuguese version of SUS. The conducted work comprised two phases, the scale translation, and the scale validation. The first phase resulted in a European Portuguese version equivalent to the original in terms of semantic and content. The second phase involved the assessment of the validity and reliability of the scale. The instrument has construct validity as it presents a high and significant correlation with other two usability metrics, the Post-Study System Usability Questionnaire (PSSUQ) (r = 0.70) and a general usability question (r = 0.48). The reliability results show less than satisfactory ICC values (ICC = 0.36), however the percentage of agreement is satisfactory (76.67%). Further studies are needed to investigate the reliability of the Portuguese version.
Procedia Computer Science | 2015
Alberto Signoretti; Ana Isabel Martins; Nuno Almeida; Diogo Vieira; Ana Filipa Rosa; Carlos Costa; António Texeira
Abstract Older adults have much to gain from bringing technology into their daily lives. The extent to which this is possible strongly depends on careful design and accessible, easy to use products, developed using an elderly centered methodology. The senior tourism is a market in expansion and the old travelers need new and innovative technologies to help and support their trips. These technologies should contribute to a fun and safe experience, while promoting feelings of pleasure and self realization. In this paper we follow this design approach and put it to the test in developing the “Trip 4 All”(T4A), an application that works as a gamified virtual assistant to the elderly during a walking tourist visit. The gamified interaction with the visited environment intend to improve motivation to accomplish the visit and make the content absorption more fun and easier. The T4A works on georeferenced maps where the users’ geoposition is a trigger to launch storytelling content and/or challenges based on the aspects of the visited site as such: geographical, art, religious, historic, cultural and human. The success in the challenges give the user prizes, new resources and abilities to try more complex challenges that brings more valuable prizes and so on. Furthermore, the proposed application intend to work as a companion that provides self confidence, support and social integration to elderly tourists.
international conference on human aspects of it for aged population | 2015
Carlos Pereira; Nuno Almeida; Ana Isabel Martins; Samuel S. Silva; Ana Filipa Rosa; Miguel Oliveira e Silva; António J. S. Teixeira
The evaluation of applications or systems within dynamic environments is complex. The existence of multiple hardware and software items which share the same space can provoke concurrency issues and result in erratic interactions. A sudden change within the environment can result is dramatic changes both to the user and application itself which can pass unnoticed in traditional evaluation methodologies. To verify if a component is compatible with a given environment is of paramount importance for areas like pervasive computing, ambient intelligence or ambient assisted living (AAL). In this paper, a semi-automatic platform for evaluation is presented and integrated with a TeleRehabilitation system in an AAL scenario to enhance evaluation. Preliminary results show the advantages of the platform in comparison with typical observation solutions mainly in terms of achieved data and overall ease of use.
Universal Access in The Information Society | 2017
António J. S. Teixeira; Flávio Ferreira; Nuno Almeida; Samuel S. Silva; Ana Filipa Rosa; J. C. R. Pereira; Diogo Vieira
AbstractOlder adults have much to gain from bringing technology into their daily lives. The extent to which this is possible strongly depends on careful design and accessible, easy-to-use products, developed using an older adults centred methodology . This paper follows this design approach and puts it to the test in developing “Medication Assistant”, an application aimed to contribute to lower the high levels of non-adherence to medication in the ageing population. This application is developed following an iterative method centred on the older adults and interaction design. The method repeats short development cycles encompassing the definition of scenarios and goals, requirements engineering, design, prototyping and evaluation by the target users. The evaluation of the increasingly refined prototypes is of paramount importance in this methodology, gathering information about the strengths and weaknesses of the application. These, along with user suggestions, constitute an important starting point to support further improvements in the subsequent development cycle. The first three development cycles for “Medication Assistant” are presented, highlighting the main aspects of each stage, and how the evaluation performed, at the end of each cycle, provided feedback to further refine the application with new and improved features. At its current stage, “Medication Assistant” obtained very positive evaluation outcomes and already provides a set of useful features concerning medication management. These features go beyond the typical medication reminders and aim to provide a first contribution towards a more holistic approach to medication non-adherence.
Procedia Computer Science | 2015
Ana Isabel Martins; Ana Filipa Rosa; Alexandra Queirós; Anabela G. Silva; Nelson Pacheco da Rocha
Abstract Usability assessment is an important issue of the development of products and services based on information technologies. Questionnaires and scales are valuable instruments to collect large amounts of subjective data from users and their application is a reliable technique to assess usability. Furthermore, when considering products and services for older adults, the International Classification of Functioning, Disability and Health (ICF) might be used as a conceptual model for usability assessment. This paper presents the development and validation of the ICF-Usability Scale (ICF-US), an instrument supported by concepts and terminologies related to ICF and that is part of a comprehensive framework for the design, development and evaluation of ambient assisted living products and services for older adults. The methodology that has been followed in the study reported by this paper comprises two phases: the development and the validation phases. The last phase consisted in an observational study performed in a nursing home involving 32 adults and its results suggest acceptable reliability and validity values for the ICF-US.
international conference on universal access in human-computer interaction | 2015
Samuel S. Silva; Nuno Almeida; Carlos Pereira; Ana Isabel Martins; Ana Filipa Rosa; Miguel Oliveira e Silva; António J. S. Teixeira
Multimodal user interfaces provide users with different ways of interacting with applications. This has advantages both in providing interaction solutions with additional robustness in environments where a single modality might result in ambiguous input or output (e.g., speech in noisy environments), and for users with some kind of limitation (e.g., hearing difficulties resulting from ageing) by yielding alternative and more natural ways of interacting. The design and development of applications supporting multimodal interaction involves numerous challenges, particularly if the goals include the development of multimodal applications for a wide variety of scenarios, designing complex interaction and, at the same time, proposing and evolving interaction modalities. These require the choice of an architecture, development and evaluation methodologies and the adoption of principles that foster constant improvements at the interaction modalities level without disrupting existing applications. Based on previous and ongoing work, by our team, we present our approach to the design, development and evaluation of multimodal applications covering several devices and application scenarios.
iberian conference on information systems and technologies | 2015
Ana Filipa Rosa; Ana Isabel Martins; Victor Costa; Alexandra Queirós; Anabela G. Silva; Nelson Pacheco da Rocha
The Post-Study System Usability Questionnaire (PSSUQ) is a 19-item instrument developed to assess the user satisfaction with system usability. The PSSUQ is widely used and robust in psychometric terms. This paper presents the process of translation, cultural adaptation and contribution to validation of the European Portuguese version of PSSUQ. The study is divided in two phases, the questionnaire translation and adaptation and the questionnaire validation. The questionnaire translation resulted in a Portuguese European version of PSSUQ equivalent to the original in terms of semantic and content. The second phase consisted of the validity and reliability assessment. The PSSUQ has excelent internal consistency (α = 0.80), as well as, satisfactory inter-rater reliability (ICC = 0.67). The PSSUQ presents construct validity, with a high and significant correlation with an overall usability evaluation question (r=0.84, p<;0.05). The PSSUQ presents discriminative validity, distinguishing applications with distinct quality.
international conference on human-computer interaction | 2015
Nuno Almeida; António J. S. Teixeira; Ana Filipa Rosa; Daniela Braga; João Freitas; Miguel Sales Dias; Samuel S. Silva; Jairo Avelar; Cristiano Chesi; Nuno Saldanha
The use of speech interaction is important and useful in a wide range of applications. It is a natural way of interaction and it is easy to use by people in general. The development of speech enabled applications is a big challenge that increases if several languages are required, a common scenario, for example, in Europe. Tackling this challenge requires the proposal of methods and tools that foster easier deployment of speech features, harnessing developers with versatile means to include speech interaction in their applications. Besides, only a reduced variety of voices are available (sometimes only one per language) which raises problems regarding the fulfillment of user preferences and hinders a deeper exploration regarding voices’ adequacy to specific applications and users.
iberian conference on information systems and technologies | 2013
Flávio Ferreira; Nuno Almeida; Ana Filipa Rosa; André Oliveira; António J. S. Teixeira; J. C. R. Pereira