A variable speed wind generator system, having a wind turbine which drives a double-output induction generator DOIG is presented. The generator is connected to power electronic converters for the transformation from variable voltage-variable frequency, to constant voltage-constant frequency. The excitation voltage applied to the rotor makes the control of generated voltage and frequency and of active power.Laboratory tests were carried out for various operation modes determined by the characteristics of the wind speed. In order to study the effects of parameters variation on the power generated, the methodology we used was the comparison of the system's behavior operating with and without wind turbine by an experimental laboratory bench tests. Results for scenarios considering different parameters variations are presented and discussed.

Sets of related signals can be represented by separating their joint variation and showing the individual signal offsets with respect to this reference. An example is the genomic signal analysis of pathogen variability. The conversion of symbolic nucleotide sequences to genomic signals allows to use signal processing methods to analyze genomic data. This approach reveals striking regularities in the distribution of nucleotides and pair of nucleotides along the sequences, in both prokaryotes and eukaryotes. Genomic signals can also be used for sequence prediction, similarly to time series prediction. The methodology is also adequate for studying the development of pathogen multiple resistance to drugs

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Absrracl: Intelligent e-learning environment5 (ILE) can increase the attractivity of e-learning systems and their teaching efficiency by adapting to each learner profile (LP) and by providing multiple support to the tutor. ILE components guide the trainee through the learning process, offer a platform for co-operative learning and knowledge discovery, and customize the ~ presentation to learner's preferences, interests and needs. Artificial intelligence, connectionist a n d evolutionary tools a r e used to this end.-,