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003
Publications

2018

Performance evaluation of different age groups for gestural interaction: a case study with Microsoft Kinect and Leap Motion

Authors
Carvalho, D; Bessa, M; Magalhaes, L; Carrapatoso, E;

Publication
Universal Access in the Information Society

Abstract
With the thriving of different natural interaction paradigms—such as gesture-based interfaces—it becomes important to understand how these novel interfaces can influence users’ performance when it comes to their age. Recent advances made in human–computer interaction allow us to manipulate digital contents more intuitively; however, no work has yet been reported that systematically evaluates how gestural interfaces may influence the performance of different user groups. Different optical sensors, which allow human body acquisition with reliable accuracy, have been released, and with the appearance of such controllers for gesture recognition, it becomes important to understand if different age-related groups display similar performance levels concerning gestural interaction, or, on the other hand, if specific sensors could induce better results than others when dealing with users of different age brackets. In this article, we compare two gesture-sensing devices (Microsoft Kinect and Leap Motion) using the Fitts’ law model to evaluate target acquisition performance, with relation to three user groups: children, young adults and older adults. This case study involved 60 participants that were asked to perform a simple continuous selection task as quickly and accurately as possible using one of the devices for gestural recognition. Indeed, performance results showed statistically significant differences among the age groups in the selection task accomplished. However, when considering the users’ performance with regard to both input devices compared side by side, there were no significant differences in each group of users. We believe this situation could imply that the device itself might not have influenced the users’ performance, but actually the users’ age might. The participants feedback was interesting on account of their behaviors and preferences: Although there are no significant differences in performance, there could be when it comes to user preference. © 2017 Springer-Verlag Berlin Heidelberg

2017

Age group differences in performance using distinct input modalities: A target acquisition performance evaluation

Authors
Carvalho, D; Bessa, M; Magalhaes, L; Melo, M; Carrapatoso, E;

Publication
2017 24º Encontro Português de Computação Gráfica e Interação (EPCGI)

Abstract

2013

PCMAT - mathematics collaborative educational system

Authors
Martins, C; Faria, L; Fernandes, M; Couto, P; Bastos, C; Carrapatoso, E;

Publication
Smart Innovation, Systems and Technologies

Abstract
PCMAT (Mathematics Collaborative Learning Platform) is a collaborative adaptive learning tool based on progressive assessment for Mathematics in Basic Schools. The learning platform is based on a constructivist approach, assessing the user knowledge and presenting contents and activities adapted to the characteristics and learning style of the student. The intelligent behavior of such platform depends on the existence of a tentative description of the student - the student model (SM). The contents of this model and the student most prominent learning style are used by a domain and interaction model to select the most appropriate response to student actions. The SM is used to select the more appropriate learning object according to the student learning stage. However, this selection demands for the access to metadata describing the contents of the learning object. This need leaded to the application of a standard to describe the learning objects (LO). The authoring of LO corresponds to one major maintenance costs present in these applications. PCMAT is able to generate several instances of the same learning object through the parameterization of some features of the learning object. The platform is also able to process student responses in natural language. This project shows how techniques from Adaptive Hypermedia System (AHS) field can improve e-learning based systems in a basic school environment. © Springer-Verlag Berlin Heidelberg 2013.

2011

Plataforma Web de Informação Geográfica para o Turismo

Authors
Lino Oliveira; André Correia Rodrigues; Helder Nunes; Leonel João Dias; António Coelho; José Manuel Oliveira; Eurico Carrapatoso; Mário Jorge Leitão

Publication
Actas de CISTI'2011 - CISTI'2011-6ª Conferência Ibérica de Sistemas e Tecnologias de Informação, vol.1, pp.600-605, Chaves, Portugal

Abstract
Vários desenvolvimentos têm sido verificados, recentemente, em áreas como os sistemas de recomendação, desenvolvimento Web, redes sociais, concepção de interfaces e sistemas de informação geográfica. Conjugá-los pode proporcionar uma experiência superior à soma das suas contribuições no que diz respeito à satisfação do utilizador. Este artigo oferece uma discussão da aplicação do conjunto destas inovações ao e-tourism, mais concretamente na construção de uma plataforma Web de informação geográfica que possa ser adaptada a qualquer região turística. Como caso de estudo mostra-se também a sua utilização na Região do Douro. A plataforma Web construída como proof of concept agrega informação geográfica proveniente de fontes dispersas e heterogéneas, compreendendo eventos, notícias, rotas e pontos de interesse (POI). Esta plataforma contempla ainda um motor de recomendações e conta adicionalmente com a possibilidade dos utilizadores poderem contribuir conteúdos como parte da comunidade.

2008

A Framework to Scaffold the Reuse of Learning Objects

Authors
I. Azevedo; Eurico Carrapatoso; C. Vaz Carvalho

Publication
ICALT 08 - The 8th IEEE International Conference on Advanced Learning Technologies , Santander, Spain

Abstract

Supervised
thesis

2017

Acessibilidade em E-learning - Uma proposta de curso para alunos com limitações cognitivas

Author
Vanessa Martins Brito Gonçalves

Institution
UP-FEUP

2017

Plataforma Colaborativa Multidisciplinar de Exercícios e Jogos Sérios Aplicados à Reabilitação e Manutenção de Idosos

Author
Hugo Fernando Azevedo Barbosa

Institution
UP-FEUP

2017

usabilidade nas bibliotecas digitais multimédia

Author
António Joaquim Machado da Fonseca

Institution
UP-FEUP

2015

s3d motion design: visual principles and inputs on communication dynamics

Author
Edgar dos Anjos Teixeira

Institution
UP-FEUP