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69 research outcomes, page 1 of 7
  • publication . Article . External research report . 2000
    Open Access
    Authors:
    Hiroki Arimura;
    Publisher: Elsevier BV

    AbstractThe elementary formal system (EFS) is a kind of logic programs which directly manipulates strings, and the learnability of the subclass called hereditary EFSs (HEFSs) has been investigated in the frameworks of the PAC-learning, query-learning, and inductive infe...

  • publication . External research report . Part of book or chapter of book . Article . 1989
    Open Access
    Authors:
    Huckfeldt, Robert;
    Publisher: DEU

    Die Studie untersucht die Beziehung zwischen Gewalt und Gesetzesbefolgung im politischen System. Dabei geht es um sogenannte 'unbeliebte' (unpopular) Gesetze und um die Tatsache, daß ein jedes politisches System gelegentlich an die Grenzen seiner Fähigkeit gerät, in der...

  • publication . Article . External research report . 2010
    Open Access
    Authors:
    Kevin Burrage; Yoshio Komori;
    Publisher: Elsevier BV

    AbstractIt is well known that the numerical solution of stiff stochastic ordinary differential equations leads to a step size reduction when explicit methods are used. This has led to a plethora of implicit or semi-implicit methods with a wide variety of stability prope...

  • publication . External research report . Article . Book . 2005
    Open Access
    Authors:
    michael benedikt; Wenfei Fan;

    AbstractWe study structural properties of each of the main sublanguages of navigational XPath (W3c Recommendation) commonly used in practice. First, we characterize the expressive power of these language fragments in terms of both logics and tree patterns. Second, we in...

  • publication . Article . External research report . 1998
    Open Access
    Authors:
    Heath, Lenwood S.; Loehr, Nicholas A.;
    Publisher: Elsevier BV

    Arithmetic in a finite field of prime characteristic p normally employs an irreducible polynomial in Z_p[X]. A particular class of irreducible polynomials, generally known as Conway polynomials, provides a means for representing several finite fields of characteristic p...

  • publication . Article . External research report . 2008
    Open Access English
    Authors:
    Alexe, Mihai; Sandu, Adrian;
    Publisher: Elsevier B.V.

    AbstractWe investigate the behavior of adaptive time stepping numerical algorithms under the reverse mode of automatic differentiation (AD). By differentiating the time step controller and the error estimator of the original algorithm, reverse mode AD generates spurious...

  • publication . Article . External research report . 2009
    Open Access
    Authors:
    Sonia Mazzucchi;
    Publisher: Elsevier BV

    AbstractA functional integral representation for the weak solution of the Schrödinger equation with a polynomially growing potential is proposed in terms of an analytically continued Wiener integral. The asymptotic expansion in powers of the coupling constant λ of the m...

  • publication . Article . External research report . 2009
    Open Access
    Authors:
    Matteo Cavaliere;
    Publisher: Elsevier BV

    We consider here spiking neural P systems with a non-synchronized (i.e., asynchronous) use of rules: in any step, a neuron can apply or not apply its rules which are enabled by the number of spikes it contains (further spikes can come, thus changing the rules enabled in...

  • publication . External research report . Article . Preprint . Other literature type . 2014
    Open Access English
    Authors:
    Tanaka, Hitoshi; Iwaisako, Tatsuro;
    Publisher: Graduate School of Economics and Osaka School of International Public Policy (OSIPP) Osaka University

    This paper examines how intellectual property rights (IPR) protection affects innovation and foreign direct investment (FDI) using a North–South quality-ladder model incorporating the exogenous and costless imitation of technology and subsidy policies for both R&D and F...

  • publication . Article . External research report . 2000
    Open Access
    Authors:
    Conforti, M.; Romeo Rizzi;
    Publisher: Elsevier BV

    Abstract We give a polynomial algorithm to compute shortest paths in weighted undirected graphs with no negative cycles (conservative graphs). We show that our procedure gives a simple algorithm to compute optimal T-joins (and consequently all of their special cases, in...

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