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      Stabbing simplices of point sets with k-flats 

      Cano Vila, Javier; Hurtado Díaz, Ferran; Urrutia Galicia, Jorge (2013)
      Let S be a set of n points in Rd in general position. A set H of k-flats is called an mk-stabber of S if the relative ...
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      Computing the stretch of an embedded graph 

      Cabello Justo, Sergio; Chimani, Markus; Hliněný, Petr (2013)
      Let G be a graph embedded in an orientable surface Σ, possibly with edge weights, and denote by len(γ) the length (the ...
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      Metaheuristic approaches for the minimum dilation triangulation problem 

      Dorzán, María Gisela; Leguizamón, Mario Guillermo; Mezura Montes, Efrén; Hernández Peñalver, Gregorio (2013)
      We focus on the development of approximated algorithms to find high quality triangulations of minimum dilation because the ...
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      SensoGraph: Using proximity graphs for sensory analysis 

      Miguel, David N. de; Orden Martín, David; Fernández Fernández, Encarnación; Rodríguez Nogales, José Manuel; Vila Crespo, Josefina (2013)
      Sensory evaluation of foods is as important as chemical, physical or microbiological examinations, being specially relevant ...
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      Reporting flock patterns on the GPU 

      Fort i Masdevall, Marta; Sellarès Chiva, Joan Antoni; Valladares Cereceda, Ignacio (2013)
      In this paper we study the problem of finding flock patterns in a set of trajectories of moving entities. A flock refers ...
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      The alternating path problem revisited 

      Claverol Aguas, Mercè; Garijo Royo, Delia; Hurtado Díaz, Ferran; Lara Cuevas, María Dolores; Seara Ojea, Carlos (2013)
      It is well known that, given n red points and n blue points on a circle, it is not always possible to find a plane geometric ...
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      Witness bar visibility 

      Cortés Parejo, María del Carmen; Hurtado Díaz, Ferran; Márquez Pérez, Alberto; Valenzuela Muñoz, Jesús (2013)
      Bar visibility graphs were introduced in the seventies as a model for some VLSI layout problems. They have been also studied ...
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      Parallel constrained Delaunay triangulation 

      Coll Arnau, Narcís; Guerrieri Basualdo, María Ethel (2013)
      In this paper we propose a new GPU method able to compute the 2D constrained Delaunay triangulation of a planar straight ...
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      Monotone crossing number of complete graphs 

      Balko, Martin; Fulek, Radoslav; Kynčl, Jan (2013)
      In 1958, Hill conjectured that the minimum number of crossings in a drawing of Kn is exactly Z(n) = 1/4 n-1/2/2 n−2/2 ...
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      Simulating distributed algorithms for lattice agents 

      Aichholzer, Oswin; Hackl, Thomas; Sacristán Adinolfi, Vera; Vogtenhuber, Birgit; Wallner, Reinhardt (2013)
      We present a practical Java tool for simulating synchronized distributed algorithms on sets of 2-and 3-dimensional ...
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      On the enumeration of permutominoes 

      Nunes Gomes Tomás, Ana Paula (2013)
      Although the exact counting and enumeration of polyominoes remain challenging open problems, several positive results were ...
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      Solving common influence region queries with the GPU 

      Fort i Masdevall, Marta; Sellarès Chiva, Joan Antoni (2013)
      In this paper we propose and solve common influence region queries. We present GPU parallel algorithms, designed under ...
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      Simulated annealing applied to the MWPT problem 

      Gagliardi, Edilma Olinda; Leguizamón, Mario Guillermo; Hernández Peñalver, Gregorio (2013)
      The Minimum Weight Pseudo-Triangulation (MWPT) problem is suspected to be NP-hard. We show here how Simulated Annealing ...
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      On the barrier-resilience of arrangements of ray-sensors 

      Kirkpatrick, David; Yang, Boting; Zilles, Sandra (2013)
      Given an arrangement A of n sensors and two points s and t in the plane, the barrier resilience of A with respect to s and ...
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      Phase transitions in the Ramsey-Turán theory 

      Balogh, József (2013)
      Let f(n) be a function and L be a graph. Denote by RT(n, L, f(n)) the maximum number of edges of an L-free graph on n ...
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      On making a graph crossing-critical 

      Hernández Vélez, César Israel; Leaños Macías, Jesús (2013)
      A graph is crossing-critical if its crossing number decreases when we remove any of its edges. Recently it was proved that ...
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      Equipartitioning triangles 

      Ramos Alonso, Pedro Antonio; Steiger, William (2013)
      An intriguing conjecture of Nandakumar and Ramana Rao is that for every convex body K ⊆ R2, and for any positive integer ...
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      Continuous surveillance of points by rotating floodlights 

      Bereg, Sergey; Díaz Báñez, José Miguel; Fort i Masdevall, Marta; Lopez, Mario A.; Pérez Lantero, Pablo; Urrutia Galicia, Jorge (2013)
      Let P and F be sets of n ≥ 2 and m ≥ 2 points in the plane, respectively, so that P∪F is in general position. We study the ...
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      An algorithm that constructs irreducible triangulations of once-punctured surfaces 

      Chávez de Diego, María José; Lawrecenko, Serge; Portillo Fernández, José Ramón; Villar Liñán, María Trinidad (2013)
      A triangulation of a surface is irreducible if there is no edge whose contraction produces another triangulation of the ...
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      Three location tapas calling for CG sauce 

      Plastria, Frank (2013)
      Based on some recent modelling considerations in location theory we call for study of three CG constructs of Voronoi type that seem not to have been studied much before.