Browsing by Title
Now showing items 19832002 of 69971

A note on the dynamics around the Lagrange collinear points of the EarthMoon system in a complete Solar System model
(201302)
Article
Restricted access  publisher's policyIn this paper we study the dynamics of a massless particle around the L 1,2 libration points of the Earth–Moon system in a full Solar System gravitational model. The study is based on the analysis of the quasiperiodic ... 
A note on the dynamics around the Lagrange points of the EarthMoon system in a complete Solar System model
(2013)
Conference report
Open AccessThis paper studies the dynamics of a massless particle around the libration points of the Earth  Moon system in a full Solar System gravitational model. The study is based on the analysis of the quasi  periodic ... 
A Note on the Dynamics of PiecewiseAutonomous Bistable Parabolic Equations
(2000)
Article
Open Access 
A note on the Ecogen language builtin random deviate generators
(Universitat Politècnica de Barcelona. Centre de Càlcul, 198609)
Article
Open AccessThe standard ECOGEN (a simulation language based on Pascal) random deviate generators are described. For every one of them, a short usage note and a description of the algorithm and underlying theory is presented. This ... 
A note on the Fisher information matrix for the skewgeneralizednormal model
(Institut d'Estadística de Catalunya, 2013)
Article
Open AccessIn this paper, the exact form of the Fisher information matrix for the skewgeneralized normal (SGN) distribution is determined. The existence of singularity problems of this matrix for the skewnormal and normal particular ... 
A note on the likelihood and moments of the skewnormal distribution
(Institut d'Estadística de Catalunya, 2008)
Article
Open AccessIn this paper an alternative approach to the one in Henze (1986) is proposed for deriving the odd moments of the skewnormal distribution considered in Azzalini (1985). The approach is based on a Pascal type triangle, which ... 
A note on the matrix Haffian
(Institut d'Estadística de Catalunya, 2000)
Article
Open Access 
A note on the periodic orbits and topological entropy of graph maps
(2000)
Article
Open AccessThis paper deals with the relationship between the periodic orbits of continuous maps on graphs and the topological entropy of the map. We show that the topological entropy of a graph map can be approximated by the entropy ... 
A note on the relationship between spectral radius and norms of bounded linear operators
(2009)
Article
Open AccessLet X be a Banach space and L ( X ) be the Banach algebra of bounded operators on X . In this note we prove that if we have a compact subset K of a commutative subalgebra of L ( X ), and given " > 0, then ... 
A note on the scalar Haffian
(Institut d'Estadística de Catalunya, 2000)
Article
Open AccessIn this note a uniform transparent presentation of the scalar Haffian will be given. Some wellknown results will be generalized. A link will be established between the scalar Haffian and the derivative matrix as developed ... 
A note on the subgraphs of the (2×\infty)grid
(201002)
Article
Restricted access  publisher's policyWe give a lineartime algorithm checking whether a graph is a subgraph of the (2×k)grid for some value of k. Our algorithm is based on a detailed characterization of the structure of such graphs. 
A note on the symmetric difference in lattices
(Universitat Politècnica de Catalunya. Secció de Matemàtiques i Informàtica, 2005)
Article
Open AccessThe paper introduces a definition of symmetric difference in lattices with negation, presents its general properties and studies those that are typical of ortholattices, orthomodular lattices, de Morgan and boolean algebras. 
A note on the totally transitive graph maps
(2000)
Article
Open Access 
A note on the two temperature theory with dualphaselag delay: some exact solutions
(200910)
Article
Restricted access  publisher's policyIn this note we present exact solutions of two initialboundary value problems (IBVP)s in the setting of a recentlyintroduced theory of heat conduction, wherein the two temperature theory of the late 1960s is merged ... 
A note on the use of supplyuse tables in impact analyses
(Institut d'Estadística de Catalunya, 2012)
Article
Open AccessLittle attention has so far been paid to the problems inheren t in interpreting the meaning of results from standard impact analyses using symmetric inputoutpu t tables. Impacts as well as drivers of these impacts ... 
A note on upper bound formulations in limit analysis
(John Wiley & Sons, 20120824)
Article
Restricted access  publisher's policyIn this paper we study some recent formulations for the computation of upper bounds in limit analysis. We show that a previous formulation presented by the authors does not guarantee the strictness of the upper bound, ... 
A note on Weak Stability Boundaries
(20061208)
Article
Restricted access  publisher's policyThis paper is devoted to clarify the algorithmic definition of the weak stability boundary in the framework of the planar Restricted Three Body Problem. The role of the invariant hyperbolic manifolds associated to the ... 
A novel ACAC converter based SiC for domestic induction cooking applications
(2013)
Conference report
Restricted access  publisher's policyThis paper presents the analysis and design of a new high frequency acac converter applied to domestic induction heating. The proposed topology uses only four switches to control power. Converter operation is same as a ... 
A novel access patternbased multicore memory architecture
(Universitat Politècnica de Catalunya, 20141218)
Doctoral thesis
Open Access 
A novel algorithm for isolated electrification projects
(20150504)
External research report
Open AccessIn this report it is proposed a metaheuristic procedure to support the design of stand  alone commun ity electrification projects. In particular, the solution returned by the procedure ...