<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>13</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Daniel Díaz-Pernil</style></author><author><style face="normal" font="default" size="100%">Miguel A. Gutiérrez-Naranjo</style></author><author><style face="normal" font="default" size="100%">Pedro  Real</style></author><author><style face="normal" font="default" size="100%">Vanesa Sánchez-Canales</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Computing Homology Groups in Binary 2D Imagery by Tissue-like P Systems</style></title><secondary-title><style face="normal" font="default" size="100%">Romanian Journal of Information Science and Technology</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2010</style></year><pub-dates><date><style  face="normal" font="default" size="100%">09/2010</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://www.imt.ro/romjist/Volum13/Number13_2/abstracts.htm#4</style></url></web-urls></urls><publisher><style face="normal" font="default" size="100%">EDITURA ACADEMIEI ROMÂNE</style></publisher><pub-location><style face="normal" font="default" size="100%">Bucureşti, România</style></pub-location><volume><style face="normal" font="default" size="100%">13</style></volume><pages><style face="normal" font="default" size="100%">141-152</style></pages><abstract><style face="normal" font="default" size="100%">We present a new solution for the Homology Groups of Binary 2D Image (HGB2I) Problem by using Membrane Computing techniques. This is a classical problem in Homology Theory which tries to calculate the number of connected components and the representative curves of the holes of these components from a given binary 2D image. To this aim, we present a family of P systems which solves all the instances of the problem in the framework of Tissue-like P systems with catalysts. This is a new framework which combines the membrane structure and symport-antiport communication rules of tissue-like P systems with the power of catalysts.</style></abstract><issue><style face="normal" font="default" size="100%">2</style></issue><custom1><style face="normal" font="default" size="100%">0.188</style></custom1><custom2><style face="normal" font="default" size="100%">58/61 - Q4</style></custom2></record></records></xml>