2014
Autores
Martins, HF; Martin Lopez, S; Filograno, ML; Corredera, P; Frazao, O; Gonzalez Herraez, M;
Publicação
23RD INTERNATIONAL CONFERENCE ON OPTICAL FIBRE SENSORS
Abstract
We report on the use of second-order Raman amplification to assist a phase-sensitive optical time domain reflectometer (phi OTDR) used for vibration measurements over very long distances. The sensor was able to measure vibrations of up to 380 Hz (limit set by the time of flight of light pulses) in a distance of 125 km with a resolution of 10 m and no post-processing. Balanced detection is used to reduce the relative intensity noise. A comparison with a sensor using first-order Raman amplification under similar conditions is presented and a clear improvement of performance is demonstrated.
2014
Autores
Sousa, A; Mouraz, A;
Publicação
INTERNATIONAL JOURNAL OF ENGINEERING EDUCATION
Abstract
The so called 'Soft Skills' (SSs) are the set of non-technical skills that enable a given individual to interact effectively and harmoniously with other people. These skills are also interesting for the promotion of deep knowledge and to foster academic success. The case study analyses the very special 'Projeto FEUP' course that promotes SSs across all engineering programmes in the Faculty of Engineering of the University of Porto (FEUP), in Portugal. This is done right after the arrival of students at the institution by means of producing several communicational items over an adequate technical work. The study involved 781 students. The presented results hint that Soft Skills are, in fact, improved after half-semester but this is not the sole product of the mentioned course.
2014
Autores
Fonseca, NA; Petryszak, R; Marioni, J; Brazma, A;
Publicação
Abstract
2014
Autores
Pereira, R; Moreira, AHJ; Leite, M; Rodrigues, PL; Queirós, S; Rodrigues, NF; Leão, P; Vilaça, JL;
Publicação
SeGAH 2014 - IEEE 3rd International Conference on Serious Games and Applications for Health, Books of Proceedings
Abstract
Laparoscopic surgery (LS) has revolutionized traditional surgical techniques introducing minimally invasive procedures for diagnosis and local therapies. LSs have undeniable advantages, such as small patient incisions, reduced postoperative pain and faster recovery. On the other hand, restricted vision of the anatomical target, difficult handling of the surgical instruments, restricted mobility inside the human body, need of dexterity to hand-eye coordination and inadequate and non-ergonomic surgical instruments may restrict LS only to more specialized surgeons. To overcome the referred limitations, this work presents a new robotic surgical handheld system - the EndoRobot. The EndoRobot was designed to be used in clinical practice or even as a surgical simulator. It integrates an electromechanical system with 3 degrees of freedom. Each degree can be manipulated independently and combined with different levels of sensitivity allowing fast and slow movements. As other features, the EndoRobot has battery power or external power supply, enables the use of bipolar radiofrequency to prevent bleeding while cutting and allows plug-and-play of the laparoscopic forceps for rapid exchange. As a surgical simulator, the system was also instrumented to measure and transmit, in real time, its position and orientation for a training software able to monitor and assist the trainee's surgical movements.
2014
Autores
Rodrigues, H; Jose, R; Coelho, A; Melro, A; Ferreira, MC; Falcao e Cunha, JFE; Monteiro, MP; Ribeiro, C;
Publicação
SENSORS
Abstract
Mobile payments still remain essentially an emerging technology, seeking to fill the gap between the envisioned potential and widespread usage. In this paper, we present an integrated mobile service solution based on the near field communication (NFC) protocol that was developed under a research project called MobiPag. The most distinctive characteristic of Mobipag is its open architectural model that allows multiple partners to become part of the payment value-chain and create solutions that complement payments in many unexpected ways. We describe the Mobipag architecture and how it has been used to support a mobile payment trial. We identify a set of design lessons resulting from usage experiences associated with real-world payment situations with NFC-enabled mobile phones. Based on results from this trial, we identify a number of challenges and guidelines that may help to shape future versions of NFC-based payment systems. In particular, we highlight key challenges for the initial phases of payment deployments, where it is essential to focus on scenarios that can be identified as more feasible for early adoption. We also have identified a fundamental trade-off between the flexibility supported by the Mobipag solution and the respective implications for the payment process, particularly on the users' mental model.
2014
Autores
Pinho, LM; Quinones, E; Bertogna, M; Marongiu, A; Carlos, JP; Scordino, C; Ramponi, M;
Publicação
2014 17TH EUROMICRO CONFERENCE ON DIGITAL SYSTEM DESIGN (DSD)
Abstract
The advent of next-generation many-core embedded platforms has the chance of intercepting a converging need for predictable high-performance coming from both the High-Performance Computing (HPC) and Embedded Computing (EC) domains. On one side, new kinds of HPC applications are being required by markets needing huge amounts of information to be processed within a bounded amount of time. On the other side, EC systems are increasingly concerned with providing higher performance in real-time, challenging the performance capabilities of current architectures. This converging demand, however, raises the problem about how to guarantee timing requirements in presence of parallel execution. This paper presents the approach of project P-SOCRATES for the design of an integrated framework for the execution of workload-intensive applications with real-time requirements on top of nextgeneration commercial-off-the-shelf (COTS) platforms based on many-core accelerated architectures. The time-criticality and parallelisation challenges are addressed by merging techniques coming from both HPC and EC domains, identifying the main sources of indeterminism and proposing efficient mapping and scheduling algorithms, along with the associated timing and schedulability analysis, to guarantee the real-time and performance requirements of the applications.
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