Encontrados 22 documentos, a visualizar página 1 de 3

Cooperação na área da saúde : uma experiência na Guiné-Bissau

O continente africano está a pagar um preço muito elevado pelas altas taxas de morbilidade e mortalidade prematuras, em especial no que se refere às crianças e às mulheres. Embora com taxas diversas de país para país, também a esperança de vida se situava, no final da década de 90 em cerca de 45 anos, considerando toda a região subsariana. Ora, uma saúde deficiente provoca dor e sofrimento, reduz a capacidade p...

Reputation Management. Sabrina Helm; Kerstin Liehr-Gobbers; Christopher Storck....

FC Porto : a reputational perspective on corporate football

The complexity that surrounds football as sport and as business, led us to question how corporate communication and reputation management might help build a balance between financial control and great achievements in football competitions. With the purpose of studying this issue, an exploratory single case study research was conducted. The choice was the Portuguese club FC Porto, and its sports operating compan...

TIMEC : um circuito integrado para aplicações ultra-sónicas

Dissertação apresentada para obtenção do grau de Mestre em Engenharia Electrotécnica e de Computadores, na Faculdade de Engenharia da Universidade do Porto, sob a orientação do Prof. Doutor José Alfredo Ribeiro da Silva Matos

Football and reputation management : the role of online communication platforms

Football clubs, as any type of organization, have a reputation to be managed. More than a sport, football is a business activity that generates high revenues, attracts considerable investments and extreme media exposure. Therefore, reputation management might be considered a key function, when it comes to shape the perceptions of a club’s constituents. As Fombrun (1996) noted, reputations are partly a reflectio...

Hierarchization process by possibilistic fuzzy clustering of fuzzy rules

Greenhouse air temperature optimal fuzzy controller

A new scheme of fuzzy optimal control for the temperature of an Agriculture Greenhouse is presented. The proposed method is based on the Pontryagin’s Minimum Principle (PMP) that is used to train an adaptive fuzzy inference system to estimate values for the optimal co-state variables. This work shows that it is possible to successfully control a greenhouse by using these techniques. A method is presented to con...

Learning strategy for optimal fuzzy control

In this paper, a new scheme of fuzzy optimal control for discrete-time nonlinear systems based on the Pontryagin’s Minimum Principle is proposed. Using back propagation from the final co-state error and gradient descent, a method which allows training an adaptive fuzzy inference system to estimate values for the co-state variables converging to the optimal ones is devised. This approach allows finding a solutio...

Time series prediction by perturbed fuzzy model

This paper presents a fuzzy system approach to the prediction of nonlinear time series and dynamical systems based on a fuzzy model that includes its derivative information. The underlying mechanism governing the time series, expressed as a set of IF–THEN rules, is discovered by a modified structure of fuzzy system in order to capture the temporal series and its temporal derivative information. The task of pred...

Clustering algorithms for fuzzy rules decomposition

This paper presents the development, testing and evaluation of generalized Possibilistic fuzzy c-means (FCM) algorithms applied to fuzzy sets. Clustering is formulated as a constrained minimization problem, whose solution depends on the constraints imposed on the membership function of the cluster and on the relevance measure of the fuzzy rules. This fuzzy clustering of fuzzy rules leads to a fuzzy partition of...