This volume constitutes the refereed proceedings of the Third International Conference on Unconventional Models of Computation (UMC 2002) held in Kobe, Japan in October 2002. The 18 revised full papers presented together with eight invited full papers were carefully reviewed and selected from 36 submissions. All major areas of unconventional computing models are covered, especially quantum computing, DNA computing, membrane computing, cellular computing, and possibilities to break Turing's barrier. The authors address theoretical aspects, practical implementations and philosophical...

The third Discrete Mathematics and Theoretical Computer Science conference (DMTCS'OI) of the Centre for Discrete Mathematics and Theoretical Computer Science of the University of Auckland has been organised at the Faculty of Math ematics and Computer Science, "Ovidius" University, Constan a, Romania, with the co-operation of the Maritime Academy "Mircea eel Batran," Constan a. It was held held in the beautiful Romanian city of Constan a on the Black Sea. The conference was dedicated to Professor Frank Harary on the occasion of his 80th Birthday. The four invited speakers of the conference...