PSO-CGO: a particle swarm algorithm for cluster geometry optimization / Nuno Lourenço, Francisco Baptista Pereira -- Phylogenetic differential evolution / Vinícius Veloso de Melo, Danilo Vasconcellos Vargas, Marcio Kassouf Crocomo -- Head motion stabilization during quadruped robot locomotion: combining CPGs and stochastic optimization methods / Miguel Oliveira, Cristina P. Santos, Lino Costa, Ana Maria A. C. Rocha, Manuel Ferreira -- Incorporation of preferences in an evolutionary algorithm using an outranking relation: the EvABOR approach / Eunice Oliveira, Carlos Henggeler Antunes, Álvaro Gomes -- Asynchronous P systems / Tudor Balanescu, Radu Nicolescu, Huiling Wu -- Simulating spiking neural P systems without delays using GPUs / F. Cabarle, H. Adorna, M. A. Martínez-del-Amor -- P colonies of capacity one and modularity / Ludek Cienciala, Lucie Ciencialová, Miroslav Langer -- Local search with P systems: a case study / Miguel A. Gutiérrez-Naranjo, Mario J. Pérez-Jiménez -- Forward and backward chaining with P systems / Sergiu Ivanov, Artiom Alhazov, Vladimir Rogojin, Miguel A. Gutiérrez-Naranjo -- Towards automated verification of P systems using spin / Raluca Lefticaru, Cristina Tudose, Florentin Ipate -- MP modelling of glucose-insulin interactions in the intravenous glucose tolerance test / Vincenzo Manca, Luca Marchetti, Roberto Pagliarini -- Implementation on CUDA of the smoothing problem with tissue-like P systems / Francisco Peña-Cantillana, Daniel Díaz-Pernil, Hepzibah A. Christinal, Miguel A. Gutiérrez-Naranjo -- Elementary active membranes have the power of counting / Antonio E. Porreca, Alberto Leporati, Giancarlo Mauri, Claudio Zandron -- Linear time solution to prime factorization by tissue P systems with cell division / Xingyi Zhang, Yunyun Niu, Linqiang Pan, Mario J. Pérez-Jiménez -- Unorganized machines: from Turing's ideas to modern connectionist approaches / Levy Boccato, Everton S. Soares, Marcos M. L. P. Fernandes, Diogo C. Soriano, Romis Attux -- The grand challenges in natural computing research: the quest for a new science / Leandro Nunes de Castro, Rafael Silveira Xavier, Rodrigo Pasti, Renato Dourado Maia, Alexandre Szabo, Daniel Gomes Ferrari -- Trans-Canada slimeways: slime mould imitates the Canadian transport network / Andrew Adamatzky, Selim G. Akl -- Ecosystems computing: introduction to biogeographic computation / Rodrigo Pasti, Fernando José Von Zuben, Leandro Nunes de Castro.