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Details

Details

  • Name

    Frederico Branco
  • Cluster

    Computer Science
  • Role

    Affiliated Researcher
  • Since

    01st April 2015
001
Publications

2020

A proposal for a 360° information system model for private health care organizations

Authors
Magalhaes, D; Martins, J; Branco, F; Au Yong Oliveira, M; Goncalves, R; Moreira, F;

Publication
Expert Systems

Abstract

2020

BlockU: Extended usage control in and for Blockchain

Authors
Khan, Y; Ali, T; Fariz, M; Moreira, F; Branco, F; Martins, J; Goncalves, R;

Publication
Expert Systems

Abstract
An electronic business transaction among untrusted bodies without consulting a mutually trusted party has remained widely accepted problem. Blockchain resolves this problem by introducing peer-to-peer network with a consensus algorithm and trusted ledger. Blockchain originally introduced for cryptocurrency that came with proof-of-work consensus algorithm. Due to some performance issues, scientists brought concept of permissioned Blockchain. Hyperledger Fabric is a permissioned Blockchain targeting business-oriented problems for industry. It is designed for efficient transaction execution over Blockchain with pluggable consensus model; however, there is limitation of rapid application development. Hyperledger introduced a new layer called Hyperledger Composer on top of the Fabric layer, which provides an abstract layer to model the business application readily and quickly. Composer provides a smart contract to extend the functionality and flexibility of Fabric layer and provides a way of communication with other systems to meet business requirements. Hyperledger Composer uses role-based access control (RBAC) model to secure access to its valuable assets. However, RBAC is not enough because many business deals require continuous assets monitoring. Our proposed model, BlockU, covers all possible access control models required by a business. BlockU can monitor assets continuously during transactions and updates attributes accordingly. Moreover, we incorporate hooks in Hyperledger Composer to implement extended permission model that provides extensive permission management capability on an asset. Subsequently, our proposed enhanced access control model is implemented with a minimal change to existing Composer code base and is backward compatible with the current security mechanism. © 2020 John Wiley & Sons, Ltd

2020

Qualitative analysis of virtual reality adoption by tourism operators in low-density regions

Authors
Martins, J; Goncalves, R; Au Yong Oliveira, M; Moreira, F; Branco, F;

Publication
IET SOFTWARE

Abstract
Virtual reality technologies have grown in complexity and functionality, increasing their relevance in various sectors of activity. Applying these innovations to tourism is advantageous for the organisations, the tourists and even the territories. They can provide multisensory immersivity, simulate actions and movements in real-time, enriching reality using interactive virtual objects. Thus, captivating visitors and showing territories from richer and livelier perspectives. This study describes a review of the adoption of virtual reality technology at the organisational level. In order to adapt the literature review to the tourism topic, the process of analysis of the literature was carried out with a constant concern to analyse research that studied the topic. Assuming the need to further develop the work done and to obtain a confirmation on the contribution resulting from the bibliographic review, a focus group was developed, which allowed several specialists to discuss collaboratively and interactively the research project topics without having to be in face-to-face contact. The results of this study allow not only to acknowledge the relevance of virtual reality for tourism but also to understand how the existing literature and experts are aligned with the identification of opportunities for disruptive development of solutions that trigger tourism destinations and organisational development.

2019

How smartphone advertising influences consumers' purchase intention

Authors
Martins, J; Costa, C; Oliveira, T; Goncalves, R; Branco, F;

Publication
Journal of Business Research

Abstract

2019

Examining social capital and individual motivators to explain the adoption of online citizen participation

Authors
Naranjo Zolotov, M; Oliveira, T; Cruz Jesus, F; Martins, J; Goncalves, R; Branco, F; Xavier, N;

Publication
Future Generation Computer Systems

Abstract

Supervised
thesis

2020

Previsão de fraudes bancárias a partir da análise de dados de telefones celulares em Moçambique

Author
Osvaldo Fernando Cossa

Institution
UTAD

2020

Estudo da acessibilidade web nas plataformas online do setor do turismo

Author
Lázaro Emanuel Fernandes Pereira

Institution
UP-FEUP

2019

Implementação de um painel de gestão de serviços de tecnologias de informação

Author
José Miguel Ribeiro de oliveira

Institution
UTAD

2019

Determinantes da adoção de realidade virtual por parte dos operadores turísticos de regiões economicamente desfavorecidas

Author
Ana Carolina Aires Pereira

Institution
UTAD

2019

Desenvolvimento de APP móvell para passageiros, em cross-platform, para a requisição de serviços de transporte on-Demand

Author
Luís Daniel Costa Faceira

Institution
UTAD