1. MECHANISMS FOR COLLABORATION INSIDE HETEROGENEOUS MULTI-AGENT SYSTEMS. Authors: GHEORGHE COSMIN SILAGHI.2. USING A MULTI-LAYER-PERCEPTRON NETWORK FOR THE PREDICTION OF A TITLE’S COURSE ON A STOCK EXCHANGE MARKET. Authors: MONICA IOANA POP SILAGHI , GHEORGHE COSMIN SILAGHI.3. SOME ELEMENTS OF FRACTAL ANALISYS OF THE MARKET. Authors: GHEORGHE COSMIN SILAGHI.