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Publicações

Publicações por CRIIS

2018

Study of Structural Response due to Earthquake Excitations: A Hardware Experimental Setup Approach

Autores
Braz Cesar, M; Paula, M; Goncalves, J; Barros, R;

Publicação
2018 13TH APCA INTERNATIONAL CONFERENCE ON CONTROL AND SOFT COMPUTING (CONTROLO)

Abstract
In this paper it is described a hardware experimental setup applied to study the response of structures due to an earthquake excitation. The described hardware experimental setup was applied in the performance and effectiveness evaluation of passive and semi-active vibration control strategies, in order to reduce the structural response due to an earthquake excitation. This study is also meant to validate the accurateness of the developed numerical models that simulate the experimental results. The hardware implementation is described, being the structural response real data and its numerical models compared.

2018

EyeLSD a Robust Approach for Eye Localization and State Detection

Autores
Eddine, BD; dos Santos, FN; Boulebtateche, B; Bensaoula, S;

Publicação
JOURNAL OF SIGNAL PROCESSING SYSTEMS FOR SIGNAL IMAGE AND VIDEO TECHNOLOGY

Abstract
Improving the safety of public roads and industrial factories requires more reliable and robust computer vision-based approaches for monitoring the eye state (open or closed) of human operators. Getting this information in real time when humans are driving cars or using hazardous machinery will help to prevent accidents and deaths. This paper proposes a new framework called EyeLSD to localize the eyes and detect their states without face detection step. For EyeLSD aims, two novel descriptors are proposed: enhanced Pyramidal Local Binary Pattern Histogram (ePLBPH) and Multi-Three-Patch LBP histogram (Multi-TPLBP). The performance of EyeLSD with ePLBPH and Multi-TPLBP is evaluated and compared against other approaches. For this evaluation three independent and public datasets were used: BioID, CAS-PEAL-R1 and ZJU datasets. The set EyeLSD, ePLBPH and Multi-TPLBP have a greater performance when compared against the state-of-the-art algorithms. The proposed approach is very stable under large range of eye appearances caused by expression, rotation, lighting, head pose, and occlusion.

2018

Path planning aware of soil compaction for steep slope vineyards

Autores
Santos, L; Ferraz, N; Neves Dos Santos, F; Mendes, J; Morais, R; Costa, P; Reis, R;

Publicação
18th IEEE International Conference on Autonomous Robot Systems and Competitions, ICARSC 2018

Abstract
The intensive use of agricultural machinery is promoting the soil compaction. The use of agricultural robots or autonomous machinery can intensify this problem, due its capacity to replicate the same trajectories. One of the possible strategies to minimize the effects of soil compaction is to control agricultural traffic instead of common random traffic. Since geo-referencing systems are present in almost all field operations it is possible to optimize trajectories to avoid to damage the crop and intensify the soil compaction. The controlled agricultural traffic on farms will not only increase production capacity, the incomes as well as the quality of the soil. In this work a novel approach based on A-star algorithm is proposed to reduce soil compaction in steep slope vineyards. © 2018 IEEE.

2018

Using robotics to teach systems engineering: A hands-on learning course example

Autores
Silva, MF; Dias, AP; Costa, MT;

Publicação
Human-Centric Robotics- Proceedings of the 20th International Conference on Climbing and Walking Robots and the Support Technologies for Mobile Machines, CLAWAR 2017

Abstract
The BSc in Systems Engineering, taught at the School of Engineering of the Porto Polytechnic (ISEP–PPorto), includes the development of team projects at the end of each semester. These projects are intended to be multidisciplinary, to allow students getting a systems perspective of the problems, and as a way to integrate knowledge from different scientific areas. To integrate the knowledge in electronics, microcontrollers and programming, common in several distinct systems nowadays, there is a course named Systems Labs I (LSIS1). This paper discusses the experience of teaching this course using a robotics based approach. The analysis is based on a survey conducted to the students enrolled in the course in the last three academic years, allowing to conclude that the overall students experience with the attendance of LSIS1 course is good. © 2018 by World Scientific Publishing Co. Pte. Ltd.

2018

Wearable UV Meter - An EPS@ISEP 2017 Project

Autores
Lonnqvist, E; Cullie, M; Bermejo, M; Tootsi, M; Smits, S; Duarte, A; Malheiro, B; Ribeiro, C; Ferreira, F; Silva, MF; Ferreira, P; Guedes, P;

Publicação
TEACHING AND LEARNING IN A DIGITAL WORLD, VOL 1

Abstract
This paper reports the collaborative design and development of Helios, a wearable UltraViolet (UV) meter. Helios is intended to help preventing the negative effects of over-exposure to UV radiation, e.g., sun burning, photo ageing, eye damage and skin cancer, as well as of under-exposure to solar radiation, e.g., the risk of developing vitamin D shortage. This project-based learning experience involved five Erasmus students who participated in EPS@ISEP - the European Project Semester (EPS) at Instituto Superior de Engenharia do Porto (ISEP) - in the spring of 2017. The Team, motivated by the desire to find a solution to this problem, conducted multiple studies, including scientific, technical, sustainability, marketing, ethics and deontology analyses, and discussions to derive the requirements, design structure, functional system and list of materials and components. The result is Helios, a prototype Wearable UV Meter that can be worn as both a bracelet and a clip-on. The tangible result was the Helios prototype, but more importantly was the learning experience of the Team, as concluded from their closing statements.

2018

Escargot Nursery - An EPS@ISEP 2017 Project

Autores
Borghuis, L; Calon, B; MacLean, J; Portefaix, J; Quero, R; Duarte, A; Malheiro, B; Ribeiro, C; Ferreira, F; Silva, MF; Ferreira, P; Guedes, P;

Publicação
TEACHING AND LEARNING IN A DIGITAL WORLD, VOL 1

Abstract
This paper presents the development of an Escargot Nursery by a multinational and multidisciplinary team of 3rd year undergraduates within the framework of EPS@ISEP - the European Project Semester (EPS) offered by the Instituto Superior de Engenharia do Porto (ISEP). The challenge was to design, develop and test a snail farm compliant with the applicable EU directives and the given budget. The Team, motivated by the desire to solve this multidisciplinary problem, embarked on an active learning journey, involving scientific, technical, marketing, sustainable and ethical development studies, brainstorming and decision-making. Based on this project-based learning approach, the Team identified the lack of innovative domestic snail farm products and, consequently, proposed the development of "EscarGO", a stylish solution for the domestic market. The paper details the proposed design and control system, including materials, components and technologies. This learning experience, which was focussed on the development of multicultural communication, multidisciplinary teamwork, problem-solving and decision-making competencies in students, produced as a tangible evidence the proof of concept prototype of "EscarGO", an Escargot Nursery designed for families to easily grow snails at home.

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