Browsing by Author "Reis, Tiago"

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    Automatic Volume Adjustments for Mobile Media Players
    (The Eurographics Association, 2021) Reis, Tiago; Carriço, Luís; Duarte, Carlos; Mealha, Óscar and Madeira, Joaquim and Tércio, Daniel and Sousa Santos, Beatriz
    The automatic adjustment of mobile user interfaces to the contexts in which they are used presents a possible solution for the interaction difficulties introduced by the constantly mutating characteristics of such contexts. Here we present a prototype of a portable media player. This player automatically adjusts its volume according to the users' preferences and the noise of the surrounding environment. We focus on the details of the volume adjustment algorithm and its – laboratorial and contextual - user centered evaluations. We detail the problems found on each phase of the evaluation procedure, and present a set of Wizard of Oz experiments exploring possible solutions for those problems.
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    Conjuntos de Gestos de Comando para Ferramentas de Desenho em Dispositivos sem Teclado
    (The Eurographics Association, 2021) Gomes, Tiago; Duarte, Carlos; Carriço, Luís; Neca, Joana; Reis, Tiago; Mealha, Óscar and Madeira, Joaquim and Tércio, Daniel and Sousa Santos, Beatriz
    A interacção gestual, sem teclado, em aplicações de desenho, apresenta restrições mais rígidas do que em outro género de aplicações baseadas em gestos. Tal acontece, principalmente, pela necessidade de eliminar a ambiguidade existente quando um gesto representa um comando ou faz, simplesmente, parte do que está a ser desenhado. Neste artigo, exploramos conjuntos de gestos alternativos capazes de lidar com este problema. O contexto é fornecido através do ponto inicial do gesto ou, em alternativa, através de múltiplos toques no ecrã. Este artigo apresenta os resultados de uma experiência concebida para comparar dois conjuntos de gestos.
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    Supporting Group Analysis in Psychotherapy
    (The Eurographics Association, 2021) Carriço, Luís; Sá, Marco de; Duarte, Luís; Reis, Tiago; Chambel, Teresa and Nunes, Nuno and Romao, Teresa and Creissac Campos, José
    Psychological therapy for pathologies such as depression, anxiety, among others, often leads patients to group therapy sessions, where patients and therapists interact and share their experiences. Besides including the challenges that are present in any kind of meeting settings, psychotherapy, for its critical health scenario, presents difficulties that have not yet been approached by currently used groupware. This paper introduces a system, which uses mobile devices and a large public screen, to support group therapy sessions. It encompasses a variety of functionalities that provide both therapists and patients with necessary means to enhance and fulfil their particular tasks during and between sessions.