2013
Authors
Vasconcelos Raposo, J; Moreira, JM; Teixeira, CM;
Publication
Motricidade
Abstract
The motivational orientation of an athlete aims to improve their skills (task) and getting a good result in a given competition (ego). Thus, the purpose of the present study was to compare players of one Portuguese team handball club. The independent variables were: competitive levels, years as competitors, time presence as player in the club and competitive position. The dependent variables were motivational orientations: task and ego. The sample consisted of 57 male athletes borne between 1977 and 1997. The Task and Ego Orientation Questionnaire in Sport (TEOSQp), validated by Fernandes and Vasconcelos-Raposo (2010) was used. Results revealed that the handball players in the club studied present high scores on both task and ego orientation with a higher score at the level of task orientation. The present results are not in accordance with previous studies. However they do not contradict consolidated theoretical proposal. Senior athletes presented higher scores in task orientation and lower on ego. Comparisons by years in competition, time presence in the club and competitive position in the do influence significantly the motivational orientation among this club team handball players.
2013
Authors
Ramos, JP; Carvalho, P; Coimbra, M;
Publication
2013 35TH ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY (EMBC)
Abstract
Delimitation and classification of each heart sound is a rather difficult task. Elevated heart rates, as found in pediatrics and in some adults as well, influence some of the most reliable features used by existing methods. Furthermore, in real life scenarios, cardiologists will not have the time to acquire the signal's length required by some of the existing algorithms, which make us think that different approaches ought to be pursued. This paper presents the work on heart sound segmentation using structural and energy based features. It is an attempt to not rely on features considered crucial to most existing approaches. Yet, it achieves a high sensitivity and specificity comparable to some literature.
2013
Authors
Gouveia, C; Zibaii, M; Latifi, H; Marques, MJB; Baptista, JM; Jorge, PAS;
Publication
SENSORS AND ACTUATORS B-CHEMICAL
Abstract
In this work a fiber optic interferometric system for differential refractive index measurement is described. The system is based on a white light Mach-Zehnder configuration, with serrodyne phase modulation, used to interrogate two similar non-adiabatic tapered optical fiber sensors in a differential scheme. In this situation the system is able to measure the refractive index independent of temperature. Signal processing with low cost digital instrumentation developed in Labview environment allows a detectable change in refractive index of Delta n approximate to 1.46 x 10(-6), which is, from the best of our knowledge the highest resolution achieved using a bare fiber taper device for a range of refractive index close to the water index. The results demonstrate the potential of the proposed scheme to operate as a self-referenced chemical and biological sensing platform.
2013
Authors
Cerveira, A; Baptista, J; Solteiro Pires, EJ;
Publication
SOCO-CISIS-ICEUTE
Abstract
Nowadays, wind energy has an important role in the challenges of clean energy supply. It is the fastest growing energy source with a increasing annual rate of 20%. This scenario motivate the development of an optimization design tool to find optimal layout for wind farms. This paper proposes a mathematical model to find the best electrical interconnection configuration of the wind farm turbines and the substation. The goal is to minimize the installation costs, that include cable cost and cable installation costs, considering technical constraints. This problem corresponds to a capacitated minimum spanning tree with additional constraints. The methodology proposed is applied in a real case study and the results are compared with the ground solution.
2013
Authors
Mourão, João; Ramos, Fernando; Moreira, Lúcia; Santos, Arnaldo;
Publication
Educação, Formação & Tecnologias
Abstract
O projeto “Serious Game em contexto de formação profissional” teve por objetivo explorar o potencial da utilização de Serious Games nas atividades de formação da PT Inovação SA. O projeto, que decorreu entre Janeiro de 2011 e Maio de 2013, incluiu a conceção, prototipagem e validação de um Serious Game destinado a familiarizar os novos colaboradores da PT Inovação SA com a organização física e lógica da empresa, para o que foi desenvolvido um ambiente realista que permite a navegação em alguns espaços de referência da empresa bem como o contacto com a estrutura dirigente e com alguns produtos. Em diversas fases do jogo o utilizador é convidado a realizar atividades pedagógicas que permitem que tome consciência dos progressos de aprendizagem que está a realizar. O Serious Game desenvolvido foi validado com sucesso através de um modelo composto por parâmetros e estratégias de avaliação orientados para análise da usabilidade e do resultados de aprendizagem, tendo-se efetuado recolha de dados através de testes de usabilidade, observação direta não participativa, registo audiovisual, think-aloud protocol e questionário por inquérito pré e pós-sessão. As principais conclusões do trabalho realizado indicam que o Serious Game possui bom potencial enquanto instrumento de apoio à formação, pois possibilita uma aprendizagem rápida e eficaz promovendo positivamente para a integração do novo colaborador na empresa.;The project "Serious Game in the context of vocational training" aimed exploring
the potential use of Serious Games in the training activities of PT Inovação SA.
The project, which took place between September 2010 and June 2013, included
design, prototyping and validation of a Serious Game intended to familiarize new
employees of PT Inovação SA with the physical and logical organization of the
company. For this purpose a realistic environment was developed allowing
navigation in some reference spaces in the company, as well as contact with the
managing structure and with some products. In various stages of the game the user
is invited to perform educational activities that allow him to be aware of his
learning progress.
The Serious Game was validated successfully by a model consisting of parameters
and assessment strategies oriented to the analysis of usability and the learning
outcomes. Data collection was achieved through usability testing, nonparticipatory
direct observation, audiovisual recording, think-aloud protocol and
questionnaire survey before and after the session. The main conclusions of the
work indicate that the Serious Game has good potential as a tool to support
training, as it proved to enable quick learning and effectiveness in promoting
positive integration of a new employee in the company.
2013
Authors
Cristalli, C; Foehr, M; Jaeger, T; Leitao, P; Paone, N; Castellini, P; Turrin, C; Schjolberg, I;
Publication
2013 IEEE INTERNATIONAL SYMPOSIUM ON INDUSTRIAL ELECTRONICS (ISIE)
Abstract
The paper introduces a new approach on design of distributed manufacturing control systems. It will be shown how multi-agent principles, self-learning, self-adaptation and a new engineering method for distributed production systems can be used to enhance integration of production control process quality control. It will be highlighted how multi-agent systems may be implemented to enforce interaction of manufacturing execution system and distributed control system, enhancing the exploitation of all available information at the quality control and process control levels. Additional focus is set on production process modeling, quality control algorithms and an engineering methodology integrating all these aspects within. The final results are validated in the field of white ware using a washing machine production line.
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