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Publicações

2020

A Generalized Matlab/ROS/Robotic Platform Framework for Teaching Robotics

Autores
Rosillo, N; Montes, N; Alves, JP; Fonseca Ferreira, NMF;

Publicação
ROBOTICS IN EDUCATION: CURRENT RESEARCH AND INNOVATIONS

Abstract
In previous works, an educational platform based on Matlab/Simulink/Lego EV3 has been developed that allows interacting in real time with the robot. However, this platform is limited to the capacity of Simulink to adapt to different robotic devices, limiting its use to LEGO and Arduino or Rasberry Pi robots. In this paper we present a generalization of this platform to any type of robot, based on Matlab/ROS/Robot. Robot Operating System (ROS) is a robotic middleware, that is, a collection of frameworks for software development of robots [4]. Despite not being an operating system, ROS provides standard services such as hardware abstraction, control of low-level devices, etc. MATLAB (R) support for ROS is a library of functions that allows you to exchange data with ROS-enabled physical robots. Matlab/ROS/Robot interaction is tested in a generic robot with Arduino Mega and Raspberry Pi 3, demonstrating the viability of the presented educational robotic platform.

2020

Teaching Cardiopulmonary Auscultation to Medical Students using a Virtual Patient Simulation Technology

Autores
Pereira, D; Ferreira, MJ; Cruz Correia, RJ; Coimbra, MT;

Publicação
42nd Annual International Conference of the IEEE Engineering in Medicine & Biology Society, EMBC 2020, Montreal, QC, Canada, July 20-24, 2020

Abstract
The teaching process of auscultation is complex in itself, and difficult to operate since it requires a wide spectrum of patients with the most diverse cardiopulmonary pathologies, readily available during teaching and assessment hours, for an ever-growing number of medical students. In this paper we will focus on how virtual patient technologies can promote the evolution of the current teaching methodologies, promoting better learning. The chosen methodology was: a) a review of available medical simulation technologies for auscultation teaching; b) a case study illustrating how a virtual patient simulation technology has been successfully used to teach and certify auscultation skills. Results show the positive impact and high acceptability of virtual patient simulation technologies in the teaching of auscultation to medical students. © 2020 IEEE.

2020

The Future of Mobility as a Service (MaaS)

Autores
Baltazar, S; Amaral, A; Barreto, L; Silva, JP; Gonçalves, L;

Publicação
Implications of Mobility as a Service (MaaS) in Urban and Rural Environments - Practice, Progress, and Proficiency in Sustainability

Abstract
The environmental concerns together with social inclusion issues and the need to promote economic equity in the society have profound implications regarding the sustainable mobility concept. This allied to a technological (r)evolution leads to the path of the internet of mobility (IoM). On the other hand, we are witnessing the prosperity of mobility associated with services, mobility as a service (MaaS), which also aims at the integration of different transport modes. Linking together IoM and MaaS, the internet of mobility as a service (IoMaaS) concept is introduced, which can learn from the end user experiences and behaviors, enabling the reduction of ease of use and sustainable mobility, while supporting a much-needed cultural shift regarding mobility habits.

2020

Challenges to the assembly and integration of the WSS with METIS

Autores
Filho, M; Amorim, A; Garcia, P; Boné, A; Rodrigues, H; Ngando, M;

Publicação
Proceedings of SPIE - The International Society for Optical Engineering

Abstract
The METIS consortium in Portugal will build the support and access structure (WSS) for the mid-infrared, first generation ELT instrument - METIS. The specific characteristics of the METIS instrument and the ELT pose several challenges to building the WSS according to functional requirements. In addition, the assembly of the WSS and integrating the WSS with METIS poses its own particular challenges due to the singular loads and dimensions. Transversal to all phases of assembly and integration of the WSS and METIS is the concern for the safety of the instruments and personnel involved. We here present these requirements, challenges and mitigation measures in light of the assembly and integration of the WSS, and the WSS with METIS. © 2020 SPIE.

2020

Integrated planning of inbound and outbound logistics with a Rich Vehicle Routing Problem with backhauls

Autores
Marques, A; Soares, R; Santos, MJ; Amorim, P;

Publicação
OMEGA-INTERNATIONAL JOURNAL OF MANAGEMENT SCIENCE

Abstract
This paper addresses the integration of the planning decisions concerning inbound logistics in an industrial setting (from the suppliers to the mill) and outbound logistics (from the mill to customers). The goal is to find the minimum cost routing plan, which includes the cost-effective outbound and inbound daily routes (OIRs), consisting of a sequence of deliveries of customer orders, pickup of a full truck-load at a supplier, and its delivery to the mill. This study distinguishes between three planning strategies: opportunistic backhauling planning (OBP), integrated inbound and outbound planning (IIOP) and decoupled planning (DIOP), the latter being the commonly used, particularly in the case of the wood-based panel industry under study. From the point of view of process integration, OBP can be considered as an intermediate stage from DIOP to IIOP. The problem is modelled as a Vehicle Routing Problem with Backhauls, enriched with case-specific rules for visiting the backhaul, split deliveries to customers and the use of a heterogeneous fleet. A new fix-and-optimise matheuristic is proposed for this problem, seeking to obtain good quality solutions within a reasonable computational time. The results from its application to the wood-based panel industry in Portugal show that IIOP can help to reduce total costs in about 2.7%, when compared with DIOP, due to better use of the delivery truck and a reduction of the number of dedicated inbound routes. Regarding OBP, fostering the use of OIRs does not necessarily lead to better routing plans than DIOP, as it depends upon a favourable geographical configuration of the set of customers to be visited in a day, specifically, the relative distance between a linehaul that can be visited last in a route, a neighboring backhaul, and a mill. The paper further provides valuable managerial insights on how the routing plan is impacted by the values of business-related model parameters which are set by the planner with some degree of uncertainty. Results suggest that increasing the maximum length of the route will likely have the largest impact in reducing transportation costs. Moreover, increasing the value of a reward paid for visiting a backhaul can foster the percentage of OIR in the optimal routing plan.

2020

Employment of Secure Enclaves in Cheat Detection Hardening

Autores
Brandao, A; Resende, JS; Martins, R;

Publicação
TRUST, PRIVACY AND SECURITY IN DIGITAL BUSINESS, TRUSTBUS 2020

Abstract
Over the last years, it has become clear that online games are one of the most used applications on the Internet. This increasing popularity has attracted an influx of players, with some of them trying to gain an unfair advantage for economic reasons, e.g., eSports tournaments, through the use of cheats and exploits. From a different perspective, it is of utmost importance to start analyzing attacks from a defensive perspective to create novel mechanisms that can stop such behaviors. In this work, we introduce a novel solution that extends current anti-cheat solutions through Intel SGX. Our solution moves the core cheat detection engine to a secure enclave provided by SGX while making use of a kernel module for the necessary primitives for system-wide protection. With this, we can prevent client-side tampering in both game code and configuration data by creating a trusted execution environment isolated from the hosting operating system. We are making it capable of preventing the attacker from modifying the cheat detection engine and associated game files. This solution blocks known attacks in games such as CS:GO while maintaining the performance, ensuring gameplay integrity and fairness.

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