Slides used in a lecture held on the 3º Salão de Pesquisa and 2º Salão de Extensão 2013 of IFRS – Campus Canoas. The lecture counted on participation of César Perdomo Purper, student of the Tecnólogo em Sistemas para Internet course from the Campus Porto Alegre, explaining via Skype to the audience all about his stage at the University of Limerick, Limerick – Irland, where he lives and currently develops his studies through the brazilian Ciência sem Fronteiras program.
