2020
Autores
Kudo, TN; Bulcão Neto, RdF; Vincenzi, AMR;
Publicação
WER
Abstract
2020
Autores
Biró, P; Gyetvai, M; Klimentova, X; Pedroso, JP; Pettersson, W; Viana, A;
Publicação
ECMS
Abstract
Following up the proposal of (Klimentova, Viana, Pedroso and Santos 2019), we consider the usage of a compensation scheme for multi-country kidney exchange programmes to balance out the benefits of cooperation. The novelty of our study is to base the target solution on the Shapley value of the corresponding TU-game, rather than on marginal contributions. We compare the long term performances of the above two fairness concepts by conducting simulations on realistically generated kidney exchange pools.
2020
Autores
Costa, DG; Vasques, F; Portugal, P; Aguiar, A;
Publicação
JOURNAL OF SENSOR AND ACTUATOR NETWORKS
Abstract
The adoption of emergency alerting systems can bring countless benefits when managing urban areas, industrial plants, farms, roads and virtually any area that is subject to the occurrence of critical events, supporting in rescue operations and reducing their negative impacts. For such systems, a promising approach is to exploit scalar sensors to detect events of interest, allowing for the distributed monitoring of different variables. However, the use of cameras as visual sensors can enhance the detection of critical events, which can be employed along with scalar sensors for a more comprehensive perception of the environment. Although the particularities of visual sensing may be challenging in some scenarios, the combination of scalar and visual sensors for the early detection of emergency situations can be valuable for many scenarios, such as smart cities and industry 4.0, bringing promising results. Therefore, in this article, we extend a sensors-based emergency detection and alerting system to also exploit visual monitoring when identifying critical events. Implementation and experimental details are provided to reinforce the use of cameras as a relevant sensor unit, bringing promising results for emergencies management.
2020
Autores
Gonçalves, GM; Meneses, R; Faria, JP; Vidal, RM;
Publicação
PROCEEDINGS OF THE 2020 IEEE GLOBAL ENGINEERING EDUCATION CONFERENCE (EDUCON 2020)
Abstract
Over the past decades, software engineering has reached a level of maturity which entails great challenges in its education. Universities must prepare students to real-life challenges by offering courses to aid students in developing several vital skills which go beyond hard skills (e.g., communication skills and self-management). At the Faculty of Engineering of the University of Porto, a pioneering course, dubbed Project Management Laboratory, offers the proper environment for students to develop such skills by inviting industry to be closely involved in the education of the students. This course integrates practice and theory in a setting close to what the students will face when they move into industry. This paper reports on the experience, results, and benefits of this innovative course.
2020
Autores
Au Yong oliveira, M; Lebre, IAPM; Nogueira, AR; Gonçalves, R;
Publicação
RISTI - Revista Iberica de Sistemas e Tecnologias de Informacao
Abstract
With the increasing technological advances that mark society daily, it is essential to analyze, not only the behavior of consumers, but also the behavior of companies facing market changes. It is necessary to distinguish a company that achieves success from one that is not able to succeed, over time. Nokia was the mobile phone market leader for about fourteen years. The launch of the iPhone, by Apple, in 2007, was one of the main reasons for the loss of that leadership. Nokia and its handset division were not able to adapt and demonstrate having dynamic capabilities. They had an excessive focus on their outdated product (their dumbphone), while not taking advantage of their internal innovative product developments to anticipate inevitable change in the market. To provide more depth to the present study a survey was performed and answered by 120 people.
2020
Autores
Matos, T; Oliveira, O; Gamboa, D;
Publicação
LEARNING AND INTELLIGENT OPTIMIZATION, LION
Abstract
Facility Location embodies a class of problems concerned with locating a set of facilities to serve a geographically distributed population of customers at minimum cost. We address the classical Capacitated Facility Location Problem (CFLP) in which the assignment of facilities to customers must ensure enough facility capacity and all the customers must be served. This is a well-known NP-hard problem in combinatorial optimization that has been extensively studied in the literature. Due to the difficulty of the problem, significant research efforts have been devoted to developing advanced heuristic methods aimed at finding high-quality solutions in reasonable computational times. We propose a Relaxation AdaptiveMemory Programming (RAMP) approach for the CFLP. Our method combines lagrangean subgradient search with an improvement method to explore primal-dual relationships to create advanced memory structures that integrate information from both primal and dual solution spaces. The algorithm was tested on the standard ORLIB dataset and on other very large-scale instances for the CFLP. Our approach efficiently found the optimal solution for all ORLIB instances and very competitive results for the large-scale ones. Comparisons with current best-performing algorithms for the CFLP show that our RAMP algorithm exhibits excellent results.
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