Ara es mostren els items 51194-51213 de 245754

    • Counterexample to a conjecture on the algebraic limit cycles of polynomial vector fields 

      Llibre Saló, Jaume; Pantazi, Chara (2004)
      Article
      Accés obert
      In Geometriae Dedicata 79 (2000), 101{108, Rudolf Winkel conjectured: For a given algebraic curve f = 0 of degree m > 4 there is in general no polynomial vector ¯eld of degree less than 2m ¡ 1 leaving invariant f = 0 ...
    • Countergradient heat flux observations during the evening transition period 

      Blay Carreras, Estel; Pardyjak, Eric; Pino González, David; Alexander, Daniel; Lohou, Fabienne; Lothon, Marie (2014-09-03)
      Article
      Accés obert
      Gradient-based turbulence models generally assume that the buoyancy flux ceases to introduce heat into the surface layer of the atmospheric boundary layer in temporal consonance with the gradient of the local virtual ...
    • Countering a drone in a 3D space: Analyzing deep reinforcement learning methods 

      Çetin, Ender; Barrado Muxí, Cristina; Pastor Llorens, Enric (Multidisciplinary Digital Publishing Institute (MDPI), 2022-11-16)
      Article
      Accés obert
      Unmanned aerial vehicles (UAV), also known as drones have been used for a variety of reasons and the commercial drone market growth is expected to reach remarkable levels in the near future. However, some drone users can ...
    • Countermeasure implementation and effectiveness analysis for AES resistance against side channel attacks 

      Zubeldia Oategui, Asier Matias (Universitat Politècnica de Catalunya, 2021-06)
      Projecte Final de Màster Oficial
      Accés obert
      Side Channel Analysis (SCA) is composed of a bunch of techniques employed to extract secret information from hardware operations through statistical analyses of execution data. For instance, the secret key of a crypto-algorithmic ...
    • Counterproductive work behavior, job stress, trait emotional intelligence and person organization fit among employees of leasing industry in Indonesia 

      Johan, Arief Prima; Yusuf, Anom (OmniaScience, 2022-10)
      Article
      Accés obert
      Purpose: This study aims at comprehending counterproductive behavior from negative workplace situations, namely job stress. As job stress is an individual attitude, trait emotional intelligence (EI) was considered the ...
    • Counting CO2 emissions in planning sustainable urban quarters 

      Cuchí Burgos, Alberto; Pagès Ramon, Anna (2007-12)
      Capítol de llibre
      Accés restringit per política de l'editorial
    • Counting configuration-free sets in groups 

      Rué Perna, Juan José; Serra Albó, Oriol; Vena Cros, Lluís (2017-01-01)
      Article
      Accés obert
      © 2017 Elsevier Ltd. We provide asymptotic counting for the number of subsets of given size which are free of certain configurations in finite groups. Applications include sets without solutions to equations in non-abelian ...
    • Counting configurations of limit cycles and centers 

      Gasull, Armengol; Guillamon Grabolosa, Antoni; Mañosa Fernández, Víctor (2023-04-10)
      Report de recerca
      Accés obert
      We present several results on the determination of the number and distribution of limit cycles or centers for planar systems of differential equations. In most cases, the study of a recurrence is one of the key points of ...
    • Counting configurations of limit cycles and centers 

      Gasull Embid, Armengol; Guillamon Grabolosa, Antoni; Mañosa Fernández, Víctor (2023-08)
      Article
      Accés obert
      We present several results on the determination of the number and distribution of limit cycles or centers for planar systems of differential equations. In most cases, the study of a recurrence is one of the key points of ...
    • Counting configuration–free sets in groups 

      Rué Perna, Juan José; Serra Albó, Oriol; Vena Cros, Lluís (2015)
      Comunicació de congrés
      Accés restringit per política de l'editorial
      We present a unified framework to asymptotically count the number of sets, with a given cardinality, free of certain configurations. This is done by combining the hypergraph containers methodology joint with arithmetic ...
    • “Counting drops and observing color”: Teachers’ and students’ first experiences in small-scale chemistry practicum of acid-base solutions 

      Hidayah, Fitria Fatichatul; Imaduddin, Muhamad; Yuliyanto, Eko; Gunawan, Gunawan; Djunaidi, Muhammad Cholid; Tantayanon, Supawan (OmniaScience, 2022-04)
      Article
      Accés obert
      This study introduces a small-scale chemistry practicum technique with the concept of acid-base identification, determination of pH with indicators, and neutralization reactions with the concept of titration. The first ...
    • Counting H-colorings of partial k-trees 

      Díaz Cort, Josep; Serna Iglesias, María José; Thilikos Touloupas, Dimitrios (2000-11)
      Report de recerca
      Accés obert
      The problem of counting all H-colorings of a graph G of n vertices is considered. While the problem is, in general #P-complete, we give linear time algorithms that solve the main variants of this problem when the input ...
    • Counting independent sets in cubic graphs of given girth 

      Perarnau Llobet, Guillem; Perkins, Will (2018-09-26)
      Article
      Accés obert
      We prove a tight upper bound on the independence polynomial (and total number of independent sets) of cubic graphs of girth at least 5. The bound is achieved by unions of the Heawood graph, the point/line incidence graph ...
    • Counting list h-colorings and variants 

      Díaz Cort, Josep; Serna Iglesias, María José; Thilikos Touloupas, Dimitrios (2001-05)
      Report de recerca
      Accés obert
      We study the counting versions of several variants of the H-coloring problem. The complexity of the H-coloring problem is described by a dichotomy theorem that classifies the problem according to the the topology of H ...
    • Counting Malaria parasites with a two-stage EM based algorithm using crowdsourced data 

      Cabrera-Bean, Margarita; Pagès Zamora, Alba Maria; Diaz Vilor, Carles; Postigo Camps, Maria; Cuadrado Sánchez, Daniel; Luengo Oroz, Miguel Ángel (Institute of Electrical and Electronics Engineers (IEEE), 2017)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Malaria eradication of the worldwide is currently one of the main WHO’s global goals. In this work, we focus on the use of human-machine interaction strategies for lowcost fast reliable malaria diagnostic based on a ...
    • Counting outerplanar maps 

      Geffner, I.; Noy Serrano, Marcos (2017-04-13)
      Article
      Accés obert
      A map is outerplanar if all its vertices lie in the outer face. We enumerate various classes of rooted outerplanar maps with respect to the number of edges and vertices. The proofs involve several bijections with lattice ...
    • Counting polygon dissections in the projective plane 

      Noy Serrano, Marcos; Rué Perna, Juan José (2008-10)
      Article
      Accés obert
      For each value of k ≥ 2, we determine the number pn of ways of dissecting a polygon in the projective plane into n subpolygons with k + 1 sides each. In particular, if k = 2 we recover a result of Edelman and Reiner (1997) ...
    • Counting subgroups using Stallings automata and generalizations 

      López Larios, Paloma (Universitat Politècnica de Catalunya, 2023-09-12)
      Projecte Final de Màster Oficial
      Accés obert
      L'estudi dels subgrups del grup lliure es pot dur a terme utilitzant la teoria desenvolupada per Stallings, que dóna una representació gràfica que codifica les propietats algebraiques d'aquests subgrups en forma d'autòmats ...
    • Counting the number of solutions: a survey of recent inclusion results in the area of counting classes 

      Torán Romero, Jacobo (1990-01)
      Report de recerca
      Accés obert
    • Counting-by-Detection with Three-dimensional Fully Convolutional Networks 

      Mas Pujol, Sergi (Universitat Politècnica de Catalunya, 2018-01-25)
      Treball Final de Grau
      Accés obert
      Realitzat a/amb:   École polytechnique fédérale de Lausanne
      The project goal is to count and detect instances in an image using deep learning. We target the regime where object detectors need to work reliably in scenarios with crowding, overlapping or instances with a small size. ...