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Publications

2019

Adversarial learning for a robust iris presentation attack detection method against unseen attack presentations

Authors
Ferreira, PM; Sequeira, AF; Pernes, D; Rebelo, A; Cardoso, JS;

Publication
2019 INTERNATIONAL CONFERENCE OF THE BIOMETRICS SPECIAL INTEREST GROUP (BIOSIG 2019)

Abstract
Despite the high performance of current presentation attack detection (PAD) methods, the robustness to unseen attacks is still an under addressed challenge. This work approaches the problem by enforcing the learning of the bona fide presentations while making the model less dependent on the presentation attack instrument species (PAIS). The proposed model comprises an encoder, mapping from input features to latent representations, and two classifiers operating on these underlying representations: (i) the task-classifier, for predicting the class labels (as bona fide or attack); and (ii) the species-classifier, for predicting the PAIS. In the learning stage, the encoder is trained to help the task-classifier while trying to fool the species-classifier. Plus, an additional training objective enforcing the similarity of the latent distributions of different species is added leading to a 'PAIspecies'- independent model. The experimental results demonstrated that the proposed regularisation strategies equipped the neural network with increased PAD robustness. The adversarial model obtained better loss and accuracy as well as improved error rates in the detection of attack and bona fide presentations.

2019

The Role of Information and Communication Technologies in the Creation and Support of Touristic Routes

Authors
Carvalho, A; Cunha, CR; Mendonca, V; Morais, EP;

Publication
EDUCATION EXCELLENCE AND INNOVATION MANAGEMENT THROUGH VISION 2020

Abstract
The tourism sector has become one of the most important engines of economic growth for many countries. With the evolution of Information and Communication Technologies, new opportunities have arisen for a reengineering in the way the various tourism and hospitality industries interact with tourists. Equally, new possibilities open to the entities that vision to promote the patrimony and endogenous products of their regions. Information and Communication Technologies are today one of the most critical areas for the success of tourism and how tourist destinations can be promoted. Tourists, increasingly a digital generation, expect that the access to information and services be done in an innovative, immersive and contextualized way, through the use of technologies that are embedded in their daily lives. This article discusses the touristic routes creation process and the role of Information and Communication Technologies in the creation and support of touristic routes. Also, a technological model is presented in its conceptual perspective, as well the functional modelling of its main components and features.

2019

Exploring the meaning of social innovation: a categorisation scheme based on the level of policy intervention, profit orientation and geographical scale

Authors
Baptista, N; Pereira, J; Moreira, AC; De Matos, N;

Publication
INNOVATION-ORGANIZATION & MANAGEMENT

Abstract
There has been a growing interest in academia regarding the term 'social innovation', including in disciplines such as sociology, administration, history, management, psychology, and economics. The literature highlights the lack of scientific clarity in the use of the term, and some scholars argue that the term is no more than a 'buzzword' or a 'fad'. This article focusses on the analysis of the conceptualizations of social innovation, contrasting sociological and economical approaches, and adopts an integrative approach to propose a categorization scheme of social innovation projects based on three distinct variables, namely the level of policy support, the profit orientation and the geographical scale. We argue that government support and the scalability of social innovations should be carefully pondered depending on the characteristics of the social innovation initiatives. We conclude that policy support should privilege social innovation initiatives that, while having the potential to deliver social good, are constrained by market failures. In addition, we also argue in favour of policy support for small bottom-up initiatives that have a profit-logic but are not sufficiently robust to survive on their own due to the liabilities of smallness and newness. Finally, we advise caution in public policies supporting scale-up strategies and highlighted the inherent challenges.

2019

Ambient Intelligence - Software and Applications -, 9th International Symposium on Ambient Intelligence, ISAmI 2018, Toledo, Spain, 20-22 June 2018

Authors
Novais, P; Jung, JJ; González, GV; Caballero, AF; Navarro, E; González, P; Carneiro, D; Pinto, A; Campbell, AT; Durães, D;

Publication
ISAmI

Abstract

2019

Robotics Activities

Authors
Vargas de Souza, JA; Schlemmer, E;

Publication
International Journal for Innovation Education and Research

Abstract
The general objective of this article is to present the importance of robotics in elementary level school. In addition to discussing pedagogical mediation in this context. The reason for the development of this work centers on the need for studies on Robotics in the educational environment and its networks of relations with a focus on the learning of students and on the need for a change in the culture of the school. The methodology of this work is based on the cartographic method of research and intervention that, instead of seeking a result or conclusion, seeks to follow the process, seeking to establish relationships. Thus, we began mapping the pedagogical mediation between the teachers and students of the municipal schools of Viamão, EMEF Residencial Figueira and EMEF Sergeant Manoel Raymundo Soares. In order to understand the pedagogical mediation of the inventive robot robotics activities for the competitions of the II Municipal Robotics Exhibition of the Viamão Municipality - Rio Grande do Sul. From the results, we can highlight that the students seek to improve their knowledge in related areas, such as physics, mathematics, electronics, programming, and mechanics. Assuming an inventive and active stance, it also enables students to build not only concepts, skills, but also values ??and ideals in order to contribute to society. Making them autonomous, independent and responsible citizens.

2019

Are Millennials Ready for the Internet of Things?

Authors
Barbosa, B; Filipe, S; Santos, CA; Simões, D;

Publication
Smart Marketing With the Internet of Things - Advances in Marketing, Customer Relationship Management, and E-Services

Abstract
A lot has been said about the digital natives and their natural way of integrating the internet in their daily activities. Millennials have been considered a unique segment of consumers by researchers and practitioners alike, due to their ability and propensity to adopt and adapt new media to their daily routine. Although it is expectable that they are particularly keen on embracing IoT, extant literature is scarce on their views on the adoption of IoT to their home, work, and leisure activities. In this chapter, the authors analyze the potential of the millennial segment to IoT products and services. Results of a qualitative study with Portuguese consumers are included and provide interesting cues to marketers working with IoT offers.

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