Exploració per tema "Boundary"

Ara es mostren els items 1-8 de 8

    • Asymptotic analysis of the Gunn effect with realistic boundary conditions 

      Bonilla, L. L.; Rodríguez Cantalapiedra, Inma; Gomila Lluch, Gabriel; Rubí Capaceti, José Miguel (The American Physical Society, 1997-08-31)
      Article
      Accés obert
      A general asymptotic analysis of the Gunn effect in n-type GaAs under general boundary conditions for metal-semiconductor contacts is presented. Depending on the parameter values in the boundary condition of the injecting ...

    • Developable surfaces with prescribed boundary 

      Alberich Carramiñana, Maria; Amorós Torrent, Jaume; Coltraro, Franco (Springer-Birkhäuser, 2021)
      Capítol de llibre
      Accés obert
      It is proved that a generic simple, closed, piecewise regular curve in space can be the boundary of only infinitely many developable surfaces with nonvanishing mean curvature. The relevance of this result in the context ...

    • Disseny d'un octree extés 

      Monclús Lahoya, Eva; Navazo Álvaro, Isabel (1997-09)
      Report de recerca
      Accés obert
      The Extended Octree is a generalization of classical Octree, based on the inclusion of four new node types (Face, Edge, Vertex and QuasiVertex). These new terminal nodes contain a piece of the boundary of the object ...

    • La3+-induced (micro)structural changes and origin of the relaxor-like phase transition in ferroelectric lead barium niobate electroceramics 

      Venet, Michel; Zabotto, Fabio L.; García García, José Eduardo; Ochoa Guerrero, Diego A.; García, Ducinei; Eiras, Jose A.; M'Peko, Jean-Claude (Springer, 2014-04-01)
      Article
      Accés obert
      Lead barium niobate (Pb1-x Ba (x) Nb2O6, PBN) ferroelectric materials have been and are the subject of numerous studies in literature due to their potential for wide-ranging applications in the electronic industry. In this ...

    • On geodetic sets formed by boundary vertices 

      Cáceres González, José; Hernando Martín, María del Carmen; Mora Giné, Mercè; Pelayo Melero, Ignacio Manuel; Puertas González, María Luz; Seara Ojea, Carlos (2003)
      Article
      Accés obert
      Let G be a finite simple connected graph. A vertex v is a boundary vertex of G if there exists a vertex u such that no neighbor of v is further away from u than v. We obtain a number of properties involving different types ...

    • Some structural, metric and convex properties of the boundary of a graph 

      Hernando Martín, María del Carmen; Mora Giné, Mercè; Pelayo Melero, Ignacio Manuel; Seara Ojea, Carlos (2013-04-25)
      Article
      Accés obert
      Let u;v be two vertices of a connected graph G . The vertex v is said to be a boundary vertex of u if no neighbor of v is further away from u than v . The boundary of a graph is the set of all its ...

    • The lost space: on the blurry boundaries of urbanity 

      Bigaj, Przemysław (Centre de Política de Sòl i Valoracions, 2016-07)
      Text en actes de congrés
      Accés obert
      The boundaries of the modern city are defined by administrative divisions – boards informing about the lines created artificially on a map and not by physical “barriers” – walls, gates, frontages. At the same time, dynamic ...

    • The Pohozaev identity for the fractional Laplacian 

      Ros Oton, Xavier; Serra Montolí, Joaquim (2014-08-01)
      Article
      Accés obert
      In this paper we prove the Pohozaev identity for the semilinear Dirichlet problem (-Delta)(s) u = f(u) in Omega, u equivalent to 0 in R-n\Omega. Here, s is an element of (0, 1), (-Delta)(s) is the fractional Laplacian in ...