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Publications

2017

Realistic Boccia Game Simulator Adapted for People with Disabilities or Motor Disorders: Architecture and Preliminary Usability Study

Authors
Ribeiro, JD; Faria, BM; Paulo Moreira, AP; Reis, LP;

Publication
RECENT ADVANCES IN INFORMATION SYSTEMS AND TECHNOLOGIES, VOL 3

Abstract
Over the last decades, Serious Games have gained increased importance, mainly due to the evolution and expansion of video games and its application in multiple areas. Integration in the world of sport is one of the solutions that individuals with disabilities or motor disorders develop to feel more socially integrated, more independent and confident with themselves. Boccia is a Paraly-mpic sport that is increasingly getting more attention around the world. This has contributed for the objectives of this project since it attracts these patients a lot more easily and including it in the Serious Games category enables them to develop and rehabilitate their cognitive capabilities. It will allow the users being dynamic, holding their attention and motivating them instead of the traditional cognitive rehabilitation processes that quickly become repetitive and discouraging. This paper describes a realistic Boccia game simulator adapted for people with disabilities or motor disorders still on development that aims to integrate a set of features that include real physics, multimodal user interface and social features (diversion, rehabilitation, competition and improvement). These features can be used to enhance the interest of non-practitioners of the sport and to improve the training conditions of Boccia athletes. Results observed in an experiment with real Boccia game components indicate that the simulator offers great similarity to the reality with the maximum difference between the measures obtained in both being 10 cm.

2017

New Multi-Stage and Stochastic Mathematical Model for Maximizing RES Hosting Capacity-Part II: Numerical Results

Authors
Santos, SF; Fitiwi, DZ; Shafie khah, M; Bizuayehu, AW; Cabrita, CMP; Catalao, JPS;

Publication
IEEE TRANSACTIONS ON SUSTAINABLE ENERGY

Abstract
A new multistage and stochastic mathematical model of an integrated distribution system planning problem is described in Part I. The efficiency and validity of this model are tested by carrying out a case study on a standard IEEE 41-bus radial distribution system. The numerical results show that the simultaneous integration of energy storage systems (ESSs) and reactive power sources largely enables a substantially increased penetration of variable generation (wind and solar) in the system, and consequently, reduces overall system costs and network losses. For the system, a combined wind and solar PV power of up to nearly three times the base-case peak load is installed over a three-year planning horizon. In addition, the proposed planning approach also considerably defers network expansion and/or reinforcement needs. Generally, it is clearly demonstrated in an innovative way that the joint planning of distributed generation, reactive power sources, and ESSs, brings significant improvements to the system such as reduction of losses, electricity cost, and emissions as a result of increased renewable energy sources (RESs) penetration. Besides, the proposed modeling framework considerably improves the voltage profile in the system, which is crucial for a normal operation of the system as a whole. Finally, the novel planning model proposed can be considered as a major leap forward toward developing controllable grids, which support large-scale integration of RESs.

2017

A novel stochastic reserve cost allocation approach of electricity market agents in the restructured power systems

Authors
Shokri Gazafroudi, AS; Shafie Khah, M; Abedi, M; Hosseinian, SH; Dehkordi, GHR; Goel, L; Karimyan, P; Prieto Castrillo, F; Manuel Corchado, JM; Catalao, JPS;

Publication
ELECTRIC POWER SYSTEMS RESEARCH

Abstract
In this paper, a new mechanism is proposed to apportion expected reserve costs between electricity market agents in the power system. The uncertainties of generation units, transmission lines, wind power generation and electrical loads are considered in this model. Hence, a Stochastic Unit Commitment (SUC) is used to apply the uncertainty of stochastic variables in the simultaneous energy and reserve market clearing problem. Moreover, electrical customers can participate in the electricity market based on their desired strategies. In this paper, a novel method is proposed to allocate reserve costs between GenCos, TransCos, electrical customers and wind farm owners. Consequently, market agents are responsible for paying a portion of the allocated expected reserve costs based on the economic metrics that are defined for the first,time in this paper. Finally, two cases including a 3-bus test system and IEEE-RTS are utilized to illustrate the performance of the proposed mechanism to share the expected reserve costs.

2017

Image Analysis and Recognition - 14th International Conference, ICIAR 2017, Montreal, QC, Canada, July 5-7, 2017, Proceedings

Authors
Karray, F; Campilho, A; Cheriet, F;

Publication
ICIAR

Abstract

2017

Collection of State Information in Live Digital Forensics

Authors
Freitas, F; Pinto, A;

Publication
AMBIENT INTELLIGENCE- SOFTWARE AND APPLICATIONS- 8TH INTERNATIONAL SYMPOSIUM ON AMBIENT INTELLIGENCE (ISAMI 2017)

Abstract
In a digital forensic investigations, the investigator usually wants to get as much state information as possible. Examples of such scenarios are households with wireless networks connecting multiple devices where a security incident occurs. USB devices present themselves as interesting vehicles for the automated collection of state information, as it can store the applications that collect the information, can store the results and can also facilitate the information collection by enabling its automatic operation. This paper proposes a USB solution to facilitate the collection of state information with integrity guarantees and multi-platform operation. Moreover, the proposed solutions is the only one that performs an extensive and homogeneous artifact collection, independently of the underlying operating system.

2017

Cycle Charging Strategy for Optimal Management of Vanadium Redox Flow Batteries Connected to Isolated Systems

Authors
Lujano Rojas, JM; Osorio, GJ; Catalao, JPS;

Publication
2017 IEEE MANCHESTER POWERTECH

Abstract
Large-scale integration of renewable resources for power generation is a propitious mode to mitigate the impact of human activities in order to reach an environmentally and sustainable way of life. However, uncontrollability and variability of renewable resources is an important barrier that could be overcome by incorporating energy storage systems (ESSs). Among ESSs technologies, Vanadium Redox Battery (VRB) is a promising technology able to be incorporated in isolated and insular power systems with limited geographical conditions and high natural resources, thus increasing the system framework flexibility. Under this context, development of a proper strategy to control VRB in daily scheduling of insular systems, considering charge controller operation and VRB dynamic behavior, is a necessity. Hence, this paper presents an optimization model based on cycle charging strategy capable to include these features. The proposed approach is illustrated by analyzing two systems, obtaining a reduction on generating costs between 1.35% and 25.3% depending on system characteristics, wind power profile, and its penetration level.

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