Now showing items 1-20 of 77

  • About log-on languages : preliminary version 

    Cases Muñoz, Rafael; Gabarró Vallès, Joaquim (1985)
    External research report
    Open Access
    We deal with on-line log-space Turing Machines with markers in the work tapes. In this type of machines we prove the existence of a language L satisfying L ϵ NSPACE_s (log⁡ n) , L ̅ ϵ NSPACE_s (log⁡ n) and L ϵ NSPACE_s ...
  • A cost-benefit analysis of continuous assessment 

    Duch Brown, Amalia; Gabarró Vallès, Joaquim; Petit Silvestre, Jordi; Blesa Aguilera, Maria Josep; Serna Iglesias, María José (SciTePress, 2015)
    Conference report
    Open Access
    The first course on programming is fundamental in the Facultat d’Informàtica de Barcelona. After a major redesign of the Programming-1 course in 2006 to give it a more practical flavor, an increasing number of measures ...
  • Adding meaning to Facebook microposts via a mash-up API and tracking its data provenance 

    Steiner, Thomas; Verborgh, Ruben; Gabarró Vallès, Joaquim; Van de Walle, Rik (IEEE Computer Society Publications, 2011)
    Conference lecture
    Open Access
    The social networking website Facebook offers to its users a feature called “status updates” (or just “status”), which allows users to create microposts directed to all their contacts, or a subset thereof. Readers can ...
  • Análisis de la evolución de un curso: productividad y desigualdad 

    Blesa Aguilera, Maria Josep; Duch Brown, Amalia; Gabarró Vallès, Joaquim; Petit Silvestre, Jordi; Serna Iglesias, María José (Universidad de Almería, 2016-07-05)
    Conference lecture
    Open Access
    Este trabajo analiza cuantitativamente las diferentes medidas adoptadas en la evaluación contínua del curso de Programación-1 de la Facultat d’Informàtica de Barcelona de la Universitat Politècnica de Catalunya desde 2010, ...
  • Analysing web-orchestrations under stress using uncertainty profiles 

    Gabarró Vallès, Joaquim; Serna Iglesias, María José; Stewart, Alan (Wiley Heyden, 2014-11-01)
    Article
    Open Access
    An orchestration is a multi-threaded computation that invokes a number of remote services. In practice, the responsiveness of a web-service fluctuates with demand; during surges in activity service responsiveness may be ...
  • An angel-daemon approach to assess the uncertainty in the power of a collectivity to act 

    Fragnito, Giulia; Gabarró Vallès, Joaquim; Serna Iglesias, María José (Springer, 2017)
    Conference report
    Open Access
    We propose the use of the angel-daemon framework to assess the Coleman's power of a collectivity to act under uncertainty in weighted voting games. In this framework uncertainty profiles describe the potential changes ...
  • A Top-down design of a parallel dictionary using skip lists 

    Gabarró Vallès, Joaquim; Martínez Parra, Conrado; Messeguer Peypoch, Xavier (1994-02)
    External research report
    Open Access
    We present a top down design of a parallel PRAM dictionary using skip lists. More precisely, we give algorithms to search, insert or delete k elements in a skip list of n elements, in parallel. The algorithms are simple ...
  • A Unified approach to concurrent and parallel algorithms on balanced data structures 

    Gabarró Vallès, Joaquim; Messeguer Peypoch, Xavier (1997-07)
    External research report
    Open Access
    Concurrent and parallel algorithms are different. However, in the case of dictionaries, both kinds of algorithms share many common points. We present a unified approach emphasizing these points. It is based on a careful ...
  • Axiomatic frameworks for developing BSP-style programs 

    Stewart, Alan; Clint, M.; Gabarró Vallès, Joaquim (1999-04)
    External research report
    Open Access
    In BSP a superstep comprises a collection of concurrently executed processes with initial and terminal synchronisations. Data transfer between processes is realised through asynchronous communications. BSP programs can ...
  • BASES DE DADES (Examen 2n quadrim) 

    Gabarró Vallès, Joaquim (Universitat Politècnica de Catalunya, 2010-04-20)
    Exam
    Restricted access to the UPC academic community
  • BASES DE DADES (Examen 2n quadrim) 

    Gabarró Vallès, Joaquim (Universitat Politècnica de Catalunya, 2010-06-04)
    Exam
    Restricted access to the UPC academic community
  • BASES DE DADES (Examen extraordinari 2n quadrim) 

    Gabarró Vallès, Joaquim (Universitat Politècnica de Catalunya, 2010-07-02)
    Exam
    Restricted access to the UPC academic community
  • Beginning to programming pilot course, IniPro, using Java 

    Franch Gutiérrez, Javier; Gabarró Vallès, Joaquim; Gomez Gonzalez, Antonia; Vázquez Huerga, Alberto; Vázquez Salceda, Javier (1999-04)
    External research report
    Open Access
    A new experience in programming education is explained. It has happened at the Facultat d'Informàtica de Barcelona (FIB) into a course named Iniciació a la Programació (Beginning to Programming), also nicknamed as ...
  • B-skip trees, a data structure between skip lists and B-trees 

    Gabarró Vallès, Joaquim; Messeguer Peypoch, Xavier (1994-12)
    External research report
    Open Access
    At a first look a skip-list is rather a collection of smartly connected linear linked list than a tree but they are, however, closely connected to trees. To prove it, we introduce random B-skip trees that inherit the ...
  • Clustering media items stemming from multiple social networks 

    Steiner, Thomas; Verborgh, Ruben; Gabarró Vallès, Joaquim; Mannens, Erik; Van de Walle, Rik (Wiley Heyden, 2015-09-27)
    Article
    Open Access
    We have created and evaluated an algorithm capable of deduplicating and clustering exact- and near-duplicate media items of type photo and video that get shared on multiple social networks in the context of events. This ...
  • Coaching on new technologies: programming workshop on Android applications for Google phones 

    Blesa Aguilera, Maria Josep; Duch Brown, Amalia; Gabarró Vallès, Joaquim; Hernández, Hugo; Serna Iglesias, María José (2011-10)
    Article
    Restricted access - publisher's policy
    In this work we describe our experience teaching an innovative Android programming workshop organized by the Universitat Politècnica de Catalunya (UPC) within the AndroidEDU Google EMEA Program. The growing interest in ...
  • COMPLEMENTS DE PROGRAMACIÓ 

    Gabarró Vallès, Joaquim (Universitat Politècnica de Catalunya, 2012-01-19)
    Exam
    Restricted access to the UPC academic community
  • COMPLEMENTS DE PROGRAMACIÓ // PROGRAMACIÓ 

    Gabarró Vallès, Joaquim (Universitat Politècnica de Catalunya, 2007-01-15)
    Exam
    Restricted access to the UPC academic community
  • COMPLEMENTS DE PROGRAMACIÓ // PROGRAMACIÓ (Examen 1r quadrim) 

    Gabarró Vallès, Joaquim; Marco Gómez, Jordi (Universitat Politècnica de Catalunya, 2009-01-12)
    Exam
    Restricted access to the UPC academic community
  • COMPLEMENTS DE PROGRAMACIÓ // PROGRAMACIÓ (Examen 1r quadrim) 

    Gabarró Vallès, Joaquim (Universitat Politècnica de Catalunya, 2006-10-30)
    Exam
    Restricted access to the UPC academic community