IEEE Transactions on Industrial Informatics Special Section on Real Time Systems vol. 4, no. 4, November 2008 and vol.5, no. 1, February 2009 Organizers and Guest Editors: Giorgio Buttazzo, Scuola Superiore Sant’Anna, Pisa, Italy, and Tei-Wei Kuo National Taiwan University, Taipei, Taiwan   Guest Editorial:  Part 1 (vol. 4, no. 4, November 2009 ); Part 2 (vol.5, no. 1, February 2009) Contents: Part 1 (vol. 4, no. 4, November 2009 ); Part 2 (vol.5, no. 1, February 2009)