Luı́s Correia

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A mathematical model describing the kinetics of continuous production of single cell protein from cheese whey using Kluyveromyces fragilis was developed from the basic principles of mass balance. The model takes into account the substrate utilization for growth and maintenance and the effect of substrate concentration and cell death rate on the net cell(More)
The cooking kinetics of meat emulsions containing various fillers was determined by monitoring changes in pH and colour during smokehouse cooking. The fillers used were buttermilk powder, corn starch, microcrystallline cellulose, modified corn starch, modified wheat flour, soy-protein concentrate and whey-protein concentrate. The cooking process was(More)
Addresses the problem of autonomous underwater vehicle (AUV) control architectures. A particular approach is proposed in which the architecture is structured accordingly to the type of missions the vehicle should perform, with a strong emphasis on its reactive capabilities. A definition of nonconfigurable mission independent behaviours, common to all(More)
The evaluation of pollutant levels is a key aspect on the issue of keeping a clean environment. Conventional techniques include the utilisation of a fixed setup incorporating pollutant sensors. However, these approaches are a very long way from an accurate monitoring. Thus, to improve pollutant monitoring on a power plant chimney, the use of robotic agent(More)
Remote operations in harsh environments, such as those found in the search & rescue and humanitarian demining domains, achieve better results when a strong interaction among users and robots is considered. In addition, robots should be disposable and robust, which can be achieved through parsimonious design. This paper presents a multi-agent system to solve(More)
We present a model suited not only for the study of evolution of cooperation but also to study behaviours such as treason and exploitation. This game has multiple Pareto Optimal solutions, which causes shifts in the agent strategies that we can interpret as either treason or exploitation. This requires some form of coordination between agents to avoid(More)
We address the problem of finding the correct agents to interact with from a general standpoint. We take the payoff obtained by agents in any game with dilemma as an input to our model. Its output is a probability distribution used in the partner selection that increasingly favours cooperative agents. Our approach contrasts with others designed for specific(More)
In this paper we describe a mapping strategy for a mobile robot. The environment is represented by a graph relating locations of particular places. The qualitative nature of the movements the robot executed to reach such places is also represented in the graph. The sensorial capacity is not demanding; a few distance sensors and a pair of odometers are(More)
The cooking kinetics of meat emulsions containing various fillers was determined by monitoring changes in hydration properties such as cooking loss and water-holding capacity during smokehouse cooking. Press juice, consumer cook test and emulsion stability of cooked product were also determined. The fillers used were buttermilk powder, corn starch,(More)