Organized Conferences:

Co-Chair of First International Balkan Conference on Communications and Networking Tirana, Albania, May 30-June 2, 2017.

Co-Chair of The Fifth IEEE International Workshop on Bio and Intelligent Computing, Fukuoka, Japan, March 26-29, 2012, held in conjunction with IEEE AINA 2012.

Program Vice Chair for Security and Trustworthy Computing of The 17th IEEE International Conference on Paralleel and Distributed Systems ICPADS 2011, Tainan, Taiwan, December 7 - 9, 2011

Co-Chair of The Second International Workshop on Trustworthy Computing TwC 2011, Tirana, Albania, September 7 - 9, 2011, to be held in conjunction with NBiS 2011.

Co-Chair of The Fifth International Workshop on Advances in Information Security WAIS 2011, Seoul, Korea, June 30 - July 2, 2011, held in conjunction with IMIS 2011.

Co-Chair of The Seventh IEEE International Workshop on Heterogeneous Wireless Networks, Biopolis, Singapore, March 22-25, 2011, held in conjunction with IEEE AINA 2011.

Co-Chair of The Fourth IEEE International Workshop on Bio and Intelligent Computing, Biopolis, Singapore, March 22-25, 2011, held in conjunction with IEEE AINA 2011.

Chair of The 13th International Conference on Network-Based Information Systems NBiS 2010, Takayama, Gifu, Japan September 14 - 16, 2010

Chair of The First International Workshop on Trustworthy Computing TwC 2010, Takayama, Gifu, Japan September 14 - 16, 2010, held in conjunction with NBiS 2010.

Co-Chair of The Fourth International Workshop on Advances in Information Security WAIS 2010, Crakow, Poland, February 15 - 18, 2010, held in conjunction with ARES 2010.

Co-Chair of The Third IEEE International Workshop on Bio and Intelligent Computing, Perth, Australia, April 20-23, 2010, held in conjunction with IEEE AINA 2010.

Co-Chair of The Sixth IEEE International Workshop on Heterogeneous Wireless Networks, Perth, Australia, April 20-23, 2010, held in conjunction with IEEE AINA 2010.

PC Chair of The 12th International Conference on Network-Based Information Systems (NBiS-09), IUPUI, Indianapolis, USA, August 19 - 21, 2009

General Chair of The 23rd IEEE International Conference on Advanced Information Networking and Applications (AINA-09), University of Bradford, Bradford, UK, May 26-29, 2009.

Program Chair of The Fourth International Conference on Availability, Reliabiilty and Security ARES 2009 , Fukuoka Institute of Technology, Japan, May 16 - 19, 2009.

Co-Chair of The Third International Workshop on Advances in Information Security WAIS 2009, Fukuoka, Japan, March 16 - 19, 2009, held in conjunction with ARES 2009.

Co-Chair of The Second IEEE International Workshop on BioComputing, Bradford, UK, on May 26-29, 2009, held in conjunction with AINA 2009.

Co-Chair of The Fifth IEEE International Workshop on Heterogeneous Wireless Networks, Bradford, UK, on May 26-29, 2009, held in conjunction with AINA 2009.

Co-Chair of The Third International Workshop on Broadband and Wireless Computing, Communication and Applications (BWCCA-2008), Linz, Austria, November 24 - 26, 2008.

Co-Chair of First International Workshop on Simulation and Modelling in Emergent Computational Systems (SMECS-2008), held in conjunction with ICPP 2008, Portland, Oregon, USA, September 8-12, 2008.

Co-Chair of The First IEEE International Workshop on BioComputing, Ginowan, Okinawa, Japan, on March 25-28, 2008, held in conjunction with AINA 2008.

Co-Chair of The Fourth IEEE International Workshop on Heterogeneous Wireless Networks, Ginowan, Okinawa, Japan, on March 25-28, 2008, held in conjunction with AINA 2008.

Co-Chair of The Second International Workshop on Advances in Information Security WAIS 2008, Barcelona, Spain, March 4 - 7, 2008, held in conjunction with ARES 2008.

Co-Chair of The Second International Workshop on Broadband and Wireless Computing, Communication and Applications (BWCCA-2007), Yogyakarta, Indonesia, December 3 - 5, 2007.

Workshop Co-Chair of The 21th IEEE International Conference on Advanced Information Networking and Applications (AINA 2007), Niagara Falls, Canada May 21-23, 2007.

Co-Chair of the "Third IEEE International Workshop on Heterogeneous Wireless Networks" HWISE'2007, held in conjunction with AINA 2007

Co-Chair of the "Second The 2007 International Symposium on Frontiers in Networking with Applications" FINA 2007 , held in conjunction with AINA 2007

International Liaison Co-Chair of the "First International Conference on Complex, Intelligent and Software Intensive Systems CISIS'2007, held in conjunction with ARES 2007

Co-Chair of The First International Workshop on Advances in Information Security WAIS 2007, Vienna, Austria April 10 - 13, 2007, held in conjunction with ARES 2007.

Co-Chair of The First International Workshop on Broadband and Wireless Computing, Communication and Applications (BWCCA-2006), Yogyakarta, Indonesia, December 4 - 6, 2006.

Invited Speaker at The 16th Annual IEEE International Symposium on Personal Indoor and Mobile Radio Communications - PIMRC'2005, Berlin, Germany on September 11 - 14, 2005

Program Co-Chair of the "20th International Conference on Advanced Information Networking and Applications," AINA'2006, Vienna, Austria, on April 19-21, 2006

Co-Chair of the "Second IEEE International Workshop on Heterogeneous Wireless Sensor Networks" HWISE'2006

Program Co-Chair of the "The 8th IEEE International Workshop on Multimedia Network Systems and Applications (MNSA-2006) held in conjunction with The 26th IEEE International Conference on Distributed Computing Systems (ICDCS-2006), Lisboa, Portugal, on July 4-7, 2006

Founder and Co-Chair of the "First International Workshop on Heterogeneous Wireless Ad Hoc and Sensor Networks" In Conjunction with the 8th International Symposium on Parallel Architectures, Algorithms, and Networks I-SPAN 2005, Dec. 7-9, 2005.

Program Vice-Chair of the "The 2005 International Conference on Embedded Software and System" (ICESS-05)

Founder and Co-Chair of the "First IEEE International Workshop on Heterogeneous Wireless Sensor Networks" HWISE'2005

Program Vice Chair for "Network Security" at ICPADS 2005

Program Area Chair for "Security in Ad hoc and Sensor Networks" at AINA 2005 Technical Program

Panelist "QoS for sensor networks" at the First International Conference on Quality of Service in Heterogeneous Wired/Wireless Networks - QShine2004,

Organized special Session on "Wireless Sensor Networks" at BroadNets 2004, Technical Program

Organizer and Moderator for the panel "Wireless networking: Interoperability and security challenges" , at IPCCC 2004

Program Vice Chair at AINA 2004.

Co-Chair of The Fifth IEEE International Workshop on Bio and Intelligent Computing, Fukuoka, Japan, March 26-29, 2012, held in conjunction with IEEE AINA 2012.

Program Vice Chair for Security and Trustworthy Computing of The 17th IEEE International Conference on Paralleel and Distributed Systems ICPADS 2011, Tainan, Taiwan, December 7 - 9, 2011

Co-Chair of The Second International Workshop on Trustworthy Computing TwC 2011, Tirana, Albania, September 7 - 9, 2011, to be held in conjunction with NBiS 2011.

Co-Chair of The Fifth International Workshop on Advances in Information Security WAIS 2011, Seoul, Korea, June 30 - July 2, 2011, held in conjunction with IMIS 2011.

Co-Chair of The Seventh IEEE International Workshop on Heterogeneous Wireless Networks, Biopolis, Singapore, March 22-25, 2011, held in conjunction with IEEE AINA 2011.

Co-Chair of The Fourth IEEE International Workshop on Bio and Intelligent Computing, Biopolis, Singapore, March 22-25, 2011, held in conjunction with IEEE AINA 2011.

Chair of The 13th International Conference on Network-Based Information Systems NBiS 2010, Takayama, Gifu, Japan September 14 - 16, 2010

Chair of The First International Workshop on Trustworthy Computing TwC 2010, Takayama, Gifu, Japan September 14 - 16, 2010, held in conjunction with NBiS 2010.

Co-Chair of The Fourth International Workshop on Advances in Information Security WAIS 2010, Crakow, Poland, February 15 - 18, 2010, held in conjunction with ARES 2010.

Co-Chair of The Third IEEE International Workshop on Bio and Intelligent Computing, Perth, Australia, April 20-23, 2010, held in conjunction with IEEE AINA 2010.

Co-Chair of The Sixth IEEE International Workshop on Heterogeneous Wireless Networks, Perth, Australia, April 20-23, 2010, held in conjunction with IEEE AINA 2010.

PC Chair of The 12th International Conference on Network-Based Information Systems (NBiS-09), IUPUI, Indianapolis, USA, August 19 - 21, 2009

General Chair of The 23rd IEEE International Conference on Advanced Information Networking and Applications (AINA-09), University of Bradford, Bradford, UK, May 26-29, 2009.

Program Chair of The Fourth International Conference on Availability, Reliabiilty and Security ARES 2009 , Fukuoka Institute of Technology, Japan, May 16 - 19, 2009.

Co-Chair of The Third International Workshop on Advances in Information Security WAIS 2009, Fukuoka, Japan, March 16 - 19, 2009, held in conjunction with ARES 2009.

Co-Chair of The Second IEEE International Workshop on BioComputing, Bradford, UK, on May 26-29, 2009, held in conjunction with AINA 2009.

Co-Chair of The Fifth IEEE International Workshop on Heterogeneous Wireless Networks, Bradford, UK, on May 26-29, 2009, held in conjunction with AINA 2009.

Co-Chair of The Third International Workshop on Broadband and Wireless Computing, Communication and Applications (BWCCA-2008), Linz, Austria, November 24 - 26, 2008.

Co-Chair of First International Workshop on Simulation and Modelling in Emergent Computational Systems (SMECS-2008), held in conjunction with ICPP 2008, Portland, Oregon, USA, September 8-12, 2008.

Co-Chair of The First IEEE International Workshop on BioComputing, Ginowan, Okinawa, Japan, on March 25-28, 2008, held in conjunction with AINA 2008.

Co-Chair of The Fourth IEEE International Workshop on Heterogeneous Wireless Networks, Ginowan, Okinawa, Japan, on March 25-28, 2008, held in conjunction with AINA 2008.

Co-Chair of The Second International Workshop on Advances in Information Security WAIS 2008, Barcelona, Spain, March 4 - 7, 2008, held in conjunction with ARES 2008.

Co-Chair of The Second International Workshop on Broadband and Wireless Computing, Communication and Applications (BWCCA-2007), Yogyakarta, Indonesia, December 3 - 5, 2007.

Workshop Co-Chair of The 21th IEEE International Conference on Advanced Information Networking and Applications (AINA 2007), Niagara Falls, Canada May 21-23, 2007.

Co-Chair of the "Third IEEE International Workshop on Heterogeneous Wireless Networks" HWISE'2007, held in conjunction with AINA 2007

Co-Chair of the "Second The 2007 International Symposium on Frontiers in Networking with Applications" FINA 2007 , held in conjunction with AINA 2007

International Liaison Co-Chair of the "First International Conference on Complex, Intelligent and Software Intensive Systems CISIS'2007, held in conjunction with ARES 2007

Co-Chair of The First International Workshop on Advances in Information Security WAIS 2007, Vienna, Austria April 10 - 13, 2007, held in conjunction with ARES 2007.

Co-Chair of The First International Workshop on Broadband and Wireless Computing, Communication and Applications (BWCCA-2006), Yogyakarta, Indonesia, December 4 - 6, 2006.

Invited Speaker at The 16th Annual IEEE International Symposium on Personal Indoor and Mobile Radio Communications - PIMRC'2005, Berlin, Germany on September 11 - 14, 2005

Program Co-Chair of the "20th International Conference on Advanced Information Networking and Applications," AINA'2006, Vienna, Austria, on April 19-21, 2006

Co-Chair of the "Second IEEE International Workshop on Heterogeneous Wireless Sensor Networks" HWISE'2006

Program Co-Chair of the "The 8th IEEE International Workshop on Multimedia Network Systems and Applications (MNSA-2006) held in conjunction with The 26th IEEE International Conference on Distributed Computing Systems (ICDCS-2006), Lisboa, Portugal, on July 4-7, 2006

Founder and Co-Chair of the "First International Workshop on Heterogeneous Wireless Ad Hoc and Sensor Networks" In Conjunction with the 8th International Symposium on Parallel Architectures, Algorithms, and Networks I-SPAN 2005, Dec. 7-9, 2005.

Program Vice-Chair of the "The 2005 International Conference on Embedded Software and System" (ICESS-05)

Founder and Co-Chair of the "First IEEE International Workshop on Heterogeneous Wireless Sensor Networks" HWISE'2005

Program Vice Chair for "Network Security" at ICPADS 2005

Program Area Chair for "Security in Ad hoc and Sensor Networks" at AINA 2005 Technical Program

Panelist "QoS for sensor networks" at the First International Conference on Quality of Service in Heterogeneous Wired/Wireless Networks - QShine2004,

Organized special Session on "Wireless Sensor Networks" at BroadNets 2004, Technical Program

Organizer and Moderator for the panel "Wireless networking: Interoperability and security challenges" , at IPCCC 2004

Program Vice Chair at AINA 2004.