2019
Authors
Vital, JPM; Ferreira, NMF; Valente, A; Filipe, V; Soares, SFSP;
Publication
PROCEEDINGS OF 2019 IEEE GLOBAL ENGINEERING EDUCATION CONFERENCE (EDUCON)
Abstract
This paper presents an innovative and motivating methodology to learn vision systems using a humanoid robot, NAO robot. Vision systems are an area of growing development and interest of engineering students. This approach to learning was applied in students of Master of Electrical Engineering. The goal is to introduce students the main approaches of visual object recognition and human face recognition using computer vision techniques to be embedded in a social robot and therefore he is able to iteract with human beings. NAO robot as an educational platform easy to learn how to program, and it has a high sensory ability and two cameras that can capture the images for processing.
2019
Authors
Zarmehri, MN; Castro, L; Santos, J; Bernardes, J; Costa, A; Santos, CC;
Publication
COMPUTERS IN BIOLOGY AND MEDICINE
Abstract
A computational analysis of physiological systems has been used to support the understanding of how these systems work, and in the case of foetal heart rate, many different approaches have been developed in the last decades. Our objective was to apply a new method of classification, which is based on spectral analysis, in foetal heart rate (FHR) traces to predict foetal acidosis diagnosed with umbilical arterial blood pH <= 7.05. Fast Fourier transform was applied to a real database for the classification approach. To evaluate the models, sensitivity, specificity, and area under the receiver operating characteristic (ROC) curve were used. Sensitivity equal to 1, specificity equal to 0.85 and an area under the ROC curve of 0.94 were found. In addition, when the definition of metabolic acidosis of umbilical arterial blood pH <= 7.05 and base excess <= -10 mmol/L was used, the proposed methodology obtained sensitivity = 1, specificity = 0.97 and area under the ROC curve = 0.98. The proposed methodology relies exclusively on the spectral frequency decomposition of the FHR signal. After further successful validation in more datasets, this approach can be incorporated easily in clinical practice due to its simple implementation. Likewise, the incorporation of this novel technique in an intrapartum monitoring station should be straightforward, thus enabling the assistance of labour professionals in the anticipated detection of acidaemia.
2019
Authors
Guldorum, HC; Erenoglu, AK; Sengor, I; Erdinc, O; Catalao, JPS;
Publication
SEST 2019 - 2nd International Conference on Smart Energy Systems and Technologies
Abstract
The role of transportation in the overall emissions in light of the increasing environmental awareness has led to a rapid transition to the use of electric vehicles (EVs), especially in the last decade. The EVs have seminal advantages in terms of different point of views; however, they may pose vital challenges for the electric power system operation due to their stochastic characteristics as an electrical load. Several industrial and academic research studies have already been and are still conducted in this respect. Specifically, the development of combined technical and business-oriented operational models is extremely significant for sustainable penetration of EVs. In this study, an interoperability platform is proposed for EV charging service taking dual sides of the mentioned service as system operator and EV owner into account, being proposed as a new perspective in this area, also compared to industrial software platforms for EV charging service by service providers rather than power system operators. The developed software platforms are demonstrated and case study based analyses are conducted to present the applicability of the proposed concept. © 2019 IEEE.
2019
Authors
Correia, A; Paredes, H; Schneider, D; Jameel, S; Fonseca, B;
Publication
2019 IEEE INTERNATIONAL CONFERENCE ON SYSTEMS, MAN AND CYBERNETICS (SMC)
Abstract
Crowdsourcing has shown to be a valuable problem-solving approach to handle the increasing complexity and scale of tasks for which the current AI algorithms are still struggling. Crowd intelligence can be particularly useful to train and supervise AI systems in a symbiotic, co-evolutionary relationship that raises long-term research challenges to the hybrid, crowd-computing design space. With the increase in the scale of mixed-initiative approaches, we need to gain a better understanding of the implications of crowd-powered systems as a scaffold for AI through the study of massive crowd-machine interactions. In this paper, we identify some open challenges and design implications for future crowd-AI hybrid systems. A framework is also proposed based on the practical challenges of addressing human-centered AI methods and processes.
2019
Authors
Silva, E; Au Yong Oliveira, M; Fonseca, P; Garganta, R; Bochmann, C;
Publication
RISTI - Revista Iberica de Sistemas e Tecnologias de Informacao
Abstract
All violinists and violists face the difficulties of playing on a nonsymmetrical instrument, which makes it quite easy to create wrong techniques. A scientific methodology was developed, composed of some simple and repeatable note patterns, and this performance was analyzed in 3D by a MoCap system (Qualisys AB, Sweden) that operates at a sampling frequency of 200 Hz, capturing the positioning of retroreflective markers on the joints of the hand, wrist, left forearm, violin and bow. The resulting data were analysed in Visual 3D software (C-Motion, USA) to extract relevant parameters and metrics. Based on this study, supported by technology, and on a soon-to-be divulged anatomical-functional model of the positioning of the left hand, we are able to state that the right technique leads to less tension and injury, to a better and faster evolution, with less effort, thus being more productive.
2019
Authors
Bernardo, MDM;
Publication
2019 14TH IBERIAN CONFERENCE ON INFORMATION SYSTEMS AND TECHNOLOGIES (CISTI)
Abstract
Smart Governence as its roots in e-government, in the principles of good governance, and in the assumptions of citizens' participation and involvement in public decision-making and is considered one of the six main characteristics of smart cities. The present investigation was intended to answer the question: "What smart governance practices are being implemented in European smart cities" through an extensive literature review and content analysis of the websites of six European smart cities: Amsterdam; Barcelona; Copenhagen; Lisbon; Manchester and Stockholm. The objective was to identify the presence of factors related with e-participation; e-services; and the functioning of local public administration on the city's websites. It was concluded that all the smart cities analyzed presented some factors related with smart governance, but with different levels of development and application.
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