J.P. Carvalho

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Interpolated Linguistic Terms (ILT) are a valid alternative representation for the fuzzy sets obtained in the inference of a fuzzy rule base, and allow the propagation of the uncertainty defined in the linguistic term set of the consequent variable. ILT can be also be used as new linguistic terms of that consequent.
Fuzzy Boolean Networks are capable of learning and reasoning. However, the reasoning result must be validated by an emotional layer, which ensures the acting rules are meaningful and that no contradictory rules are giving a wrong, "averaged", defuzzified result. Here the problem is addressed and an emotional layer is developed to deal with it.
This paper focus on the modeling of a qualitative real world dynamic system: the day to day behavior of purse seine fishing fleet skippers. The model is based on a dynamic cognitive mapping approach (rule based fuzzy cognitive maps - RB-FCM) where several developments had to be made in order to obtain a workable system. The model is intended to be used to(More)
•Intraoperative injury of the obturator nerve is not an infrequent complication of gynecological surgeries.•This injury can occur in association with pelvic lymphadenectomy for uterine or cervical cancer.•This manuscript demonstrates an alternative technique for the obturator nerve repair, when primary end to end anastomosis is not possible.
This work studies the symbol synchronizer based on a filter followed of a carrier PLL (phase lock loop). The filter is a bandpass filter, centered in an equal frequency to the data transmission rate. We will present four symbol synchronizers, the filter is equal for all them, but the PLL can be one of four types, namely the analog, the hybrid, the(More)
In this work, we will study the carrier phase lock loop (CPLL) when the input carrier changes its shape. The CPLL has four prototypes which are the analog, the hybrid, the combinational and the sequential. The input carrier can be a sinusoidal wave, a triangular wave or a rectangular wave. The objective is to study the four synchronizer types and to observe(More)
This work study two groups of synchronizers, namely the deterministic phase synchronizer and the random phase synchronizer. The difference between them is only inside of the phase comparator.In the first group, the VCO (voltage controlled oscillator) synchronizes with the input deterministic phase of an expected periodic transition. In the second group the(More)
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