Stefan MOCANU, Andrei DULUTA, Daniel MEREZEANU, Radu PIETRARU University Politehnica of Bucharest, 313 Splaiul Independentei, 060042, Romania. stefan.mocanu@upb.ro ABSTRACT: For some people a science, for other people just an art, steganography is in fact an ancient method of embedding a message into an apparently uninteresting carrier. Aiming to protect information, …

Raul CAMPOS-RODRIGUEZ, Mildreth ALCARAZ-MEJIA ITESO University, Periferico Sur # 8585, Tlaquepaque, 45604, Mexico. campos@iteso.mx, mildreth@iteso.mx ABSTRACT: This paper addresses the design of observers for Discrete-Event Systems modelled by Output Petri nets. The observer is conceived as a copy of the system and a corrective term based on the execution trajectories. …

P. FEBINA BEEVI, T. K. SUNIL KUMAR, JEEVAMMA JACOB National Institute of Technology-Calicut, P O NITC, Calicut-673601, Kerala, India. febinaeee@gmail.com, tksunil@nitc.ac.in, jeeva@nitc.ac.in ABSTRACT: A control scheme is proposed in the present paper that introduces Two Degree of Freedom (2-DOF) controller to eliminate the effect of disturbances while tracking the desired …