1. Computer Science Department, College of Charleston 66 George Street, Charleston, SC 29424 USA,
2. Creative Computer Group, RNASA Lab Faculty of Computer Science, University of A Coruña, Spain,
3. Centre for Informatics and Systems Department of Informatic Engineering Polo II-University of Coimbra 3030 Coimbra, Portugal,
4. Psychology Department, Bethel College North Newton, KS 67117 USA,
5. Department of Mathematics and Statistics, Miami University, Hamilton, OH 45011, USA,