Now showing items 1-20 of 107

    • A configurable geometry processing system 

      Fons Sánchez, Joan (Universitat Politècnica de Catalunya, 2019-10)
      Master thesis
      Open Access
      Design and development of Meshpipe, a simple tool designed to speed up the process of mesh processing pipeline development. It includes a Python API for rapid prototyping as well as a 3D viewer environment to easily inspect ...
    • A generalisation of Sylvester's problem to higher dimensions 

      Ball, Simeon Michael; Monserrat, Joaquim (2017-07-01)
      Article
      Open Access
      In this article we consider $S$ to be a set of points in $d$-space with the property that any $d$ points of $S$ span a hyperplane and not all the points of $S$ are contained in a hyperplane. The aim of this article is to ...
    • A geometric approach to dense Cayley digraphs of finite Abelian groups 

      Aguiló Gost, Francisco de Asis L.; Fiol Mora, Miquel Àngel; Pérez Mansilla, Sonia (2016)
      Article
      Open Access
      We give a method for constructing infinite families of dense (or eventually likely dense) Cayley digraphs of finite Abelian groups. The diameter of the digraphs is obtained by means of the related minimum distance diagrams. ...
    • A geometric bridge between regularised damage and energetically equivalent cracks 

      Tamayo Mas, Elena; Rodríguez Ferran, Antonio (2012)
      Conference report
      Open Access
      In order to achieve a better characterisation of a whole failure process, models which combine damage and fracture mechanics have recently been proposed. Here, a new combined methodology is presented: in order to describe ...
    • A geometric proxy of economic uncertainty based on the disagreement in survey expectations 

      Claveria González, Oscar; Monte Moreno, Enrique; Torra Porras, Salvador (2018)
      Conference lecture
      Open Access
      In this study we present a geometric approach to proxy economic uncertainty. We design a positional indicator of disagreement among survey-based agents' expectations about the state of the economy. Previous dispersion-based ...
    • A new method for ionospheric tomography and its assessment by ionosonde electron density, GPS TEC, and single-frequency PPP 

      Prol, Fabricio dos Santos; Camargo, Paulo de Oliveira; Hernández Pajares, Manuel; Honorato Muella, Marcio Tadeu de Assis (Institute of Electrical and Electronics Engineers (IEEE), 2019-01-05)
      Article
      Open Access
      A new tomographic method was developed with the main goal of mapping the ionosphere in the region of Brazil. The ionospheric background was estimated based on ionosonde and radio-occultation measurements to overcome the ...
    • Algebra lineal 

      Boadas Elvira, Juan (Edicions UPC, 2002)
      Book
      Restricted access to UB, UAB, UPC, UPF, UdG, UdL, URV, UOC, BC, UVic, UJI, URL, UIC users
      Aquest text aborda els temes fonamentals de l'Àlgebra Lineal que formen part dels continguts de primer curs de les carreres d'Enginyeria i Ciències: aplicacions lineals, matrius, determinants, diagonalització, producte ...
    • Apuntes de Geometria con arreglo al programa de Complemento de Algebra, Geometria y Trigonometria 

      Crusat Prats, Leopoldo (Lit. M. Hereu, 1901)
      Book
      Open Access
    • Arcs in finite projective spaces 

      Ball, Simeon Michael; Lavrauw, Michel (2019-11-23)
      Article
      Restricted access - publisher's policy
      This is an expository article detailing results concerning large arcs in finite projective spaces. It is not strictly a survey but attempts to cover the most relevant results on arcs, simplifying and unifying proofs of ...
    • Aristarc de Samos, el geòmetra que va mesurar l'univers 

      Massa Esteve, Maria Rosa (Societat Catalana de Matemàtiques (SCM), 2020-02)
      Article
      Open Access
      En aquest article després de la presentació biogràfica d'Aristarc de Samos, s'analitzen les demostracions que va emprar a la seva obra per trobar les mides i les distàncies del Sol i la Lluna.
    • Arquitectura en cuatro dimensiones 

      Barceló Garcia, Miquel (2006-11)
      Article
      Open Access
    • Art and math using a equally linked tetrahedron 

      Moreno Lupiáñez, Manuel; Tarrés, Josep; Sánchez Cuenca, Luis; Vinyes, Toni (2019)
      Conference lecture
      Open Access
      The tetrahedron is a well-known polyhedron. The tetrahedron can be shown with a set of lines (bars) made of 3 points (joints) from the different elements; for instance an edge is a line of 2 vertices and the same edge. The ...
    • Ángulos obtusos en conjuntos de puntos: un problema de geometría combinatoria 

      Gasparino Benitez, J.Bautista (Universitat Politècnica de Catalunya, 2013-07-04)
      Bachelor thesis
      Restricted access - author's decision
      This project treats a classic problem in combinatorial geometry: the study of obtuse angles (angles larger than pi/2 radians) in a set of points on the plane. The main question is: What is the minimum number of obtuse ...
    • Basic metric geometry 

      Fernández Sánchez, Joaquín; Ramos Cabal, Alba (Universitat Politècnica de Catalunya, 2019-10-21)
      Lecture notes
      Open Access
    • Blending isogeometric analysis and local maximum entropy meshfree approximants 

      Rosolen, Adrián; Arroyo Balaguer, Marino (2013-09)
      Article
      Open Access
      We present a method to blend local maximum entropy (LME) meshfree approximants and isogeometric analysis. The coupling strategy exploits the optimization program behind LME approximation, treats isogeometric and LME basis ...
    • Cálculo directo de la carga crítica de pandeo de pórticos. Parte I 

      Lorenzana Ibán, Antolín; Cacho Pérez, Mariano (Universitat Politècnica de Catalunya, 2009)
      Article
      Open Access
      De todas las condiciones de diseño de una estructura de barras, en muchos casos, la condición más crítica consiste en asegurar que bajo cualquier combinación posible de cargas no se produzca inestabilidad por flexión, más ...
    • Commensurations and metric properties of Houghton's groups 

      Burillo Puig, José; Cleary, Sean; Martino, Armando; Röver, Claas E. (2016-12-01)
      Article
      Open Access
      We describe the automorphism groups and the abstract commensurators of Houghton’s groups. Then we give sharp estimates for the word metric of these groups and deduce that the commensurators embed into the corresponding ...
    • Control gráfico de formas y superficies de transición 

      Crespo Cabillo, Isabel (Universitat Politècnica de Catalunya, 2005-03-04)
      Doctoral thesis
      Open Access
      El treball parteix de la idea que l'arquitectura és essencialment geomètrica i vol demostrar que el coneixement de la geometria és imprescindible per a arribar a fer una obra d'arquitectura.<br/>S'estudien uns 30 exemples ...
    • Curso metódico de dibujo lineal : con aplicaciones á las artes, á la industria y á la agrimensura 

      Giró y Aranols, Andrés, 1812-1884 (Libr. de Antonio J. Bastinos, 1893)
      Book
      Open Access
      Conté: vol. 1. Parte primera, que comprende el trazado ó dibujo geométrico, el dibujo de imitación, de adorno, lavado y agrimensura
    • Diseño y análisis de la variante sur de Moià 

      Miguel Castillo, Ana (Universitat Politècnica de Catalunya, 2013-07-11)
      Master thesis (pre-Bologna period)
      Restricted access - author's decision
      El presente documento corresponde al proyecto final de carrera de Ingeniería Técnica en Topografía de Ana Miguel Castillo. En este proyecto se lleva a cabo la creación de un nuevo vial en el municipio de Moià, esté nuevo ...