2007, Vol. XIV, Núm. 2

Summary

  • Fuzzy short-run control charts 

    Fonseca, D. J.; Elam, M. E.; Tibbs, L. (Universitat Politècnica de Catalunya. Secció de Matemàtiques i Informàtica, 2007)
    Article
    Open Access
    Statistical control charts are useful tools in monitoring the state of a manufacturing process. Control charts are used to plot process data and compare it to the limits set for the process. Points plotting outside these ...

  • Evolutionary design of digital circuits using improved multi expression programming (IMEP) 

    Hadjam, F.Z.; Moraga, C.; Rahmouni, M.K. (Universitat Politècnica de Catalunya. Secció de Matemàtiques i Informàtica, 2007)
    Article
    Open Access
    Evolutionary Electronics is a research area which involves application of Evolutionary computation in the domain of electronics. It is seen as a quite promising alternative to overcome some drawbacks of conventional design. ...

  • On two conditional entropies without probability 

    Vivona, D.; Divari, M. (Universitat Politècnica de Catalunya. Secció de Matemàtiques i Informàtica, 2007)
    Article
    Open Access
    We generalize the conditional entropy without probability given by Benvenuti in [1] and we recognize that this form is the most general compatible with the given properties. Then we compare our form of conditional entropy ...

  • A primer on media theory 

    Ovchinnikov, S. (Universitat Politècnica de Catalunya. Secció de Matemàtiques i Informàtica, 2007)
    Article
    Open Access
    Media theory is a new branch of discrete applied mathematics originally developed in mid-nineties to deal with stochastic evolution of preference relations in political science and mathematical psychology. However, many ...

  • Existence of extremal solutions for fuzzy polynomials and their numerical solutions 

    Ezzati, R.; Abbasbandy, Saeid (Universitat Politècnica de Catalunya. Secció de Matemàtiques i Informàtica, 2007)
    Article
    Open Access
    In this paper, we consider the existence of a solution for fuzzy polynomials anx^n + an−1x^n−1 + · · · + a1x + a0 = x, where ai, i = 0, 1, 2, · · · , n and x are positive fuzzy numbers satisfying certain conditions. To ...

  • Short note: counting conjectures 

    De Soto, Adolfo R.; Alvárez, A.; Trillas i Gay, Enric (Universitat Politècnica de Catalunya. Secció de Matemàtiques i Informàtica, 2007)
    Article
    Open Access
    This paper only goal is to study what is, in some finite ortholattices, the number of conjectures, refutations, consequences, hypotheses and speculations.