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Detalhes

Detalhes

  • Nome

    Frederico Branco
  • Cluster

    Informática
  • Cargo

    Investigador Afiliado
  • Desde

    01 abril 2015
001
Publicações

2020

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

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

Publicação
Expert Systems

Abstract

2020

BlockU: Extended usage control in and for Blockchain

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

Publicação
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

2019

How smartphone advertising influences consumers' purchase intention

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

Publicação
Journal of Business Research

Abstract

2019

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

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

Publicação
Future Generation Computer Systems

Abstract

2019

A proposal for an electronic negotiation platform for tourism in low-density regions: Characterizing a functional analysis and prototype for the douro valley

Autores
Cardoso, L; Martins, J; Goncalves, R; Branco, F; Moreira, F; Au Yong Oliveira, M;

Publicação
Advances in Intelligent Systems and Computing

Abstract
Traditional e-Commerce platforms tend to mimic existing physical store processes in which customers are given the opportunity to purchase only the available products without any type of personal customization or even without the possibility of being allowed to present a desired product/service to which the market might be able to respond. With this in mind, a prototype for an electronic negotiation platform directed at the tourism sector has been developed and focused on Douro Valley tourism operators, products and services. In our opinion this prototype might help to develop new business models drawn from the customers’ willingness to have a personal tourism experience and not just something off the shelf. © 2019, Springer Nature Switzerland AG.

Teses
supervisionadas

2019

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

Autor
Ana Carolina Aires Pereira

Instituição
UTAD

2019

Acessibilidade nas aplicações móveis da administração pública portuguesa

Autor
Marcos António Melo Carneiro

Instituição
UTAD

2019

Adoção e implementação de Dados Governamentais Abertos nos países em desenvolvimento da África Subsaariana: Proposta de um Modelo

Autor
Eugénio Alberto Macumbe

Instituição
UTAD

2019

Acessibilidade nas Aplicações Móveis no Setor do Turismo

Autor
Stephane Faustino Madeira

Instituição
UTAD

2019

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

Autor
José Miguel Ribeiro de oliveira

Instituição
UTAD