BibSonomy publications for /user/pietrosperoniMon Jul 16 19:21:59 CEST 2007Archives of Sexual Behavior07--Why Humans Have Sex2007academic attraction humanity sex society toread Abstract  Historically, the reasons people have sex have been assumed to be few in number and simple in nature–to reproduce, to experience pleasure, or to relieve sexual tension. Several theoretical perspectives suggest that motives for engaging in sexual intercourse may be larger in number and psychologically complex in nature. Study 1 used a nomination procedure that identified 237 expressed reasons for having sex, ranging from the mundane (e.g., “I wanted to experience physical pleasure”) to the spiritual (e.g., “I wanted to get closer to God”), from altruistic (e.g., “I wanted the person to feel good about himself/herself”) to vengeful (e.g., “I wanted to get back at my partner for having cheated on me”). Study 2 asked participants (N = 1,549) to evaluate the degree to which each of the 237 reasons had led them to have sexual intercourse. Factor analyses yielded four large factors and 13 subfactors, producing a hierarchical taxonomy. The Physical reasons subfactors included Stress Reduction, Pleasure, Physical Desirability, and Experience Seeking. The Goal Attainment subfactors included Resources, Social Status, Revenge, and Utilitarian. The Emotional subfactors included Love and Commitment and Expression. The three Insecurity subfactors included Self-Esteem Boost, Duty/Pressure, and Mate Guarding. Significant gender differences supported several previously advanced theories. Individual differences in expressed reasons for having sex were coherently linked with personality traits and with individual differences in sexual strategies. Discussion focused on the complexity of sexual motivation and directions for future research.Mon Feb 26 15:49:18 CET 2007Current Proteomics167-81 The Computational Versatility of Proteomic Signaling Networks 12004stability complexsystems grounding esignet meditation feedback Fri Feb 09 18:06:29 CET 2007JanChemical organization theory: towards a theory of constructive dynamical systems2005constructivedynamicalsystem artificialchemistry dynamicalsystem personal organizationtheory Complex dynamical networks consisting of many components that interact and produce each other are difficult to understand, especially, when new components may appear. In this paper we outline a theory to deal with such systems. The theory consists of two parts. The first part introduces the concept of a chemical organization as a closed and mass-maintaining set of components. This concept allows to map a complex (reaction) network to the set of organizations, providing a new view on the system's structure. The second part connects dynamics with the set of organizations, which allows to map a movement of the system in state space to a movement in the set of organizations.Fri Feb 09 15:18:16 CET 2007German Workshop on Artificial Life (GWAL 2000)Only available eletronicallyAprilTowards a Theory of Organizations2000constructivedynamicalsystem algebra artificialchemistry dynamicalsystem personal organizationtheory In this paper we develop an algebra to describe organizations. Its application is demonstrated with five examples. We start from definitions given by Fontana (1992) of an organization as a closed and self-maintaining set of interacting objects. We develop a formal framework to describe the inner structure of an organization and a relationship between different organizations. The definitions of intersection and union of organizations are developed. Those definitions naturally give rise to a lattice (an algebraic structure over a partially ordered set) which provides a precise basis to study the hierarchical nature of organizations. Some fundamental properties are described and the usefulness of the mathematical concepts demonstrated by application.Fri Feb 09 15:14:37 CET 2007International Journal of Unconventional ComputingChemical Organization Theory as a Theoretical Base for Chemical Computing2005computing artificialchemistries reactionnetwork organizationtheory Fri Feb 09 15:13:16 CET 20072Molecular BiotechnologyOctoberProceedings of the 7 th Conference on Protein Expression in Animal Cells(PEACe)117-124Analyzing Molecular Reaction Networks: From Pathways to Chemical Organizations342006biology reactionnetwork petrinets organizationtheory Thu Feb 08 22:31:02 CET 2007Proceedings of the BioSysBio, Systems Biology, Bioinformatics and Synthetic Biology ConferenceDesigning a Chemical Program Using Chemical Organization2007alternative chemistry systemsbiology programming organizationtheory Theory BioSysBioThu Feb 08 22:13:34 CET 2007Planetary and Space Science??Chemical Organizations in Atmospheric Photochemistries-A New Method to Analyze Chemical Reaction Networks2006planets reactionnetwork atmosphere organizationtheory Tue Feb 06 17:30:28 CET 2007Lindenstrasse 44-47, D-1000 Berlin 61Evolutionstheorie und Dynamische Systeme1984book evolution german Mon Feb 05 15:12:14 CET 2007Combustion Science and Technology10-112025-2038Automatic generation of a detailed mechanism for the oxidation of n-decane1782006article reactionnetwork fire Mon Feb 05 15:11:29 CET 2007Systems Biology in Practice: Concepts, Implementation and Application(Hardcover)by Edda KlippMaySystems Biology in Practice: Concepts, Implementation and Application2005tutorial biology systemsbiology book artificialchemistry 6Mon Feb 05 14:57:02 CET 2007Proc. 7 th German Workshop on Artificial Life135-146On the Evolution of Chemical Organizations2006evolution artificialchemistry paper artificiallife personal Mon Feb 05 14:07:50 CET 2007NovemberChemical Kinetics and Reaction Dynamics2006chemistry reactionnetwork artificialchemistry Fri Feb 02 15:24:17 CET 2007Sciencefebruary5660963-965Transitions from Nonliving to Living Matter3032004biology pace artificialchemistry life artificiallife 13Tue Jan 30 18:42:55 CET 2007Institut fur Theoretische Chemie und Molekulare Strukturbiologie, Universitat Wien, Wahringerstrasse 17, 1090 Vienna, Austria.Journal of chemical information and computer sciencesJul-Aug41085-93A graph-based toy model of chemistry.432003phd artificialchemistry organizationtheory Large scale chemical reaction networks are a ubiquitous phenomenon, from the metabolism of living cells to processes in planetary atmospheres and chemical technology. At least some of these networks exhibit distinctive global features such as the"small world"behavior. The systematic study of such properties, however, suffers from substantial sampling biases in the few networks that are known in detail. A computational model for generating them is therefore required. Here we present a Toy Model that provides a consistent framework in which generic properties of extensive chemical reaction networks can be explored in detail and that at the same time preserves the"look-and-feel"of chemistry: Molecules are represented as labeled graphs,by their structural formulas; their basic properties are derived by a caricature version of the Extended Huckel MO theory that operates directly on the graphs; chemical reaction mechanisms are implemented as graph rewriting rules acting on the structural formulas; reactivities and selectivities are modeled by a variant of the Frontier Molecular Orbital Theory based on the Extended Huckel scheme. The approach is illustrated for two types of reaction networks: Diels-Alder reactions and the formose reaction implicated in prebiotic sugar synthesisWed Dec 06 15:54:40 CET 2006Journal of Atmospheric Chemistry297-314Determination of dominant pathways in chemical reaction systems: An algorithm and its application to stratospheric chemistry41,2002chemicalreactionsystem network Wed Dec 06 14:58:15 CET 2006BostonProceedings of the Ninth International Conference on the Simulation and Synthesis of Living Systems, ALIFE'9September456Flows of information in spatially extended chemical dynamics2004artificialchemistry informationtheory kullback space 12-15Wed Aug 02 13:54:01 CEST 2006HIN r 86:1Students Texts Nr. 1Introduction to Combinators and &lgr;-Calculus1986work mathematics lambda academic book artificialchemistry combinators Mon Jul 31 16:06:41 CEST 2006Nature409387-439Synthesizing life2001biology chemistry artificiallife wet Wed Jul 26 17:15:20 CEST 2006Falmer, Brighton, UK.SeptemberBuilding life without cheating1999artificialchemistry artificiallife personal