Nelson Rocha

Prof. Nelson Rocha

University of Aveiro
orcid

Research Focus & Metrics

Academic Career Length

32Years (1995-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

View All Publications
1 January 2015 in Procedia Computer Science
Verified
Journal Article
Open access
AMAna Martins
Ana Martins
ARAna Filipa Rosa
Ana Filipa Rosa
AQAlexandra Queirós
Alexandra Queirós
ASAnabela G. Silva
Anabela G. Silva
Nelson RochaNelson Rocha
Nelson Rocha
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

5 October 2013 in Universal Access in the Information Society
Verified
Journal Article
Closed access
PDF file
AQAlexandra Queirós
Alexandra Queirós
ASAnabela G. Silva
Anabela G. Silva
JAJoaquim Alvarelhão
Joaquim Alvarelhão
Nelson RochaNelson Rocha
Nelson Rocha
António TeixeiraAntónio Teixeira
António Teixeira

28 October 2022 in Informatics
Verified
Journal Article
Open access
PDF file
DBDavid Bastos
David Bastos
Antonio Fernández-CaballeroAntonio Fernández-Caballero
Antonio Fernández-Caballero
APAntónio Pereira
António Pereira
Nelson RochaNelson Rocha
Nelson Rocha
This systematic review aimed to provide a comprehensive view of (1) the purposes of research studies using smart city infrastructures to promote citizen participation in the cities’ management and governance, (2) the characteristics of the proposed solutions in terms of data sources, data quality, and data security and privacy mechanisms, as well, as strategies to incentivize citizen participation, and (3) the development stages of the applications being reported. An electronic search was conducted combining relevant databases and keywords, and 76 studies were included after a selection process. The results show a current interest in developing applications to promote citizen participation to identify urban problems and contribute to decision-making processes. Most of the included studies considered citizens as agents able to report issues (e.g., issues related to the maintenance of urban infrastructures or the mobility in urban spaces), monitor certain environmental parameters (e.g., air or acoustic pollution), and share opinions (e.g., opinions about the performance of local authorities) to support city management. Moreover, a minority of the included studies developed collaborative applications to involve citizens in decision-making processes in urban planning, the selection of development projects, and deepening democratic values. It is possible to conclude about the existence of significant research related to the topic of this systematic review, but also about the need to deepen mechanisms to guarantee data quality and data security and privacy, to develop strategies to incentivize citizen participation, and to implement robust experimental set-ups to evaluate the impact of the developed applications in daily contexts.

16 August 2019 in Technologies
Verified
Journal Article
Open access
PDF file
Nelson RochaNelson Rocha
Nelson Rocha
Ana DiasAna Dias
Ana Dias
Gonçalo SantinhaGonçalo Santinha
Gonçalo Santinha
MRMário Rodrigues
Mário Rodrigues
AQAlexandra Queirós
Alexandra Queirós
CRCarlos Rodrigues
Carlos Rodrigues
Objectives: The study reported in this article aimed to identify: (i) the most relevant applications supported by smart city infrastructure with an impact on the provision of healthcare; (ii) the types of technologies being used; (iii) the maturity levels of the applications being reported; and (iv) major barriers for their dissemination. Methods: A systematic review was performed based on a literature search. Results: A total of 44 articles were retrieved. These studies reported on smart city applications to support population surveillance, active ageing, healthy lifestyles, disabled people, response to emergencies, care services organization, and socialization. Conclusions: Most of the included articles were either of a descriptive and conceptual nature or in an early stage of development, which means that a major barrier for their dissemination is their lack of concreteness.

13 December 2013 in JMIR Research Protocols
Verified
Journal Article
Open access
VCVítor Tedim Cruz
Vítor Tedim Cruz
JPJoana Pais
Joana Pais
VBVirgílio Bento
Virgílio Bento
CMCátia Mateus
Cátia Mateus
MCMárcio Colunas
Márcio Colunas
Nelson RochaNelson Rocha
Nelson Rocha
A Rehabilitation Tool Designed for Intensive Web-Based Cognitive Training: Description and Usability Study

1 August 2013 in Revista de Saúde Pública
Verified
Journal Article
Open access
PDF file
CSCarla Silva
Carla Silva
ICInes Coleta
Ines Coleta
ASAnabela G. Silva
Anabela G. Silva
AAAntonio Amaro
Antonio Amaro
JAJoaquim Alvarelhao
Joaquim Alvarelhao
Nelson RochaNelson Rocha
Nelson Rocha
OBJETIVO Validar a versão em português do World Health Organization Disability Assessment Schedule (WHODAS 2.0). MÉTODOS A versão original de 36 itens do WHODAS 2.0, administrada por entrevista, foi traduzida para o português de acordo com orientações internacionais e testada em nove participantes da população em geral. A versão em português foi administrada em 204 pacientes com patologia musculoesquelética. Foram coletados os dados sociodemográficos e de saúde dos pacientes, assim como o número de locais onde apresentavam dor e sua intensidade. O WHODAS 2.0 foi novamente administrado por um segundo entrevistador, um a três dias após a primeira entrevista, para avaliar a confiabilidade interavaliadores. A validade de constructo foi avaliada quanto a: capacidade do WHODAS 2.0 para diferenciar participantes com diferentes locais com dor e associação entre o WHODAS 2.0 e a intensidade da dor. A consistência interna também foi avaliada. RESULTADOS A versão portuguesa do WHODAS 2.0 teve fácil compreensão, apresentou boa consistência interna (α = 0,84) e confiabilidade interavaliadores (CCI = 0,95). Mostrou ser capaz de detectar diferenças estatisticamente significativas entre indivíduos com diferente número de locais com dor (p < 0,01) e indicar que maior incapacidade está associada à maior intensidade da dor (r = 0,44, p < 0,01), indicando validade de constructo. CONCLUSÕES A versão portuguesa do WHODAS 2.0 mostrou-se confiável e válida quando utilizada em pacientes com dor associada à patologia musculoesquelética.