Ponències/Comunicacions de congressos

Recent Submissions

  • A semi-parametric joint model for two sequential times to events and one longitudinal covariate 

    Serrat Piè, Carles; Abel Huertas, Jaime; Gómez Melis, Guadalupe (2012)
    Conference lecture
    Open Access
    The present work proposes a joint model for two sequential times to events together with longitudinal information, as an extension of the joint model by Wolfsohn and Tsiatis (1997) for one time to event and one longitudinal ...

  • Network-based ionospheric gradient monitoring to support GBAS 

    Caamaño Albuerne, María; Felux, Michael; Gerbeth, Daniel; Juan Zornoza, José Miguel; González Casado, Guillermo; Sanz Subirana, Jaume (ION Publications (The Institute of navigation), 2019)
    Conference report
    Open Access
    Ionospheric anomalies, like large ionospheric gradients, might produce a difference between the ionospheric error experienced bythe Ground Based Augmentation System (GBAS) reference station and the aircraft on approach. ...

  • Impact of Covid-19 on UPC's moodle platform and ICE's role 

    Prat Farran, Joana d'Arc; Llorens García, Ariadna; Alier Forment, Marc; Salvador Zuriaga, Francesc; Amo Filvà, Daniel (Association for Computing Machinery (ACM), 2020)
    Conference lecture
    Restricted access - publisher's policy
    On March 13 2020 all the Spanish population got confined at their homes, except for those working in essential jobs. For the universities, this meant to go fully online overnight, which presented a number of challenges on ...

  • A Kinematic campaign to evaluate EGNOS 1046 maritime service 

    Ibáñez Segura, Deimos; Rovira Garcia, Adrià; Sanz Subirana, Jaume; Juan Zornoza, José Miguel; González Casado, Guillermo; Alonso Alonso, María Teresa; López-Salcedo, José Antonio; Jia, Huamin; Pancorbo, Fransico Javier; García, Carlos; Martín, Irene; Abadía, Santos Rodrigo (ION Publications (The Institute of navigation), 2019)
    Conference report
    Open Access
    Global Navigation Satellite Systems (GNSSs) have improved the efficiency and accuracy of transportation means. In terms of safety, the European Geostationary Navigation Overlay System (EGNOS) is providing vertical and ...

  • Structure-preserving and re-randomizable RCCA-secure Public Key Encryption and its applications 

    Faonio, Antonio; Fiore, Dario; Herranz Sotoca, Javier; Ràfols, Carla (Springer, 2019)
    Conference report
    Restricted access - publisher's policy
    Re-randomizable RCCA-secure public key encryption (Rand-RCCA PKE) schemes reconcile the property of re-randomizability of the ciphertexts with the need of security against chosen-ciphertexts attacks. In this paper we give ...

  • RTK Feasibility Analysis for GNSS Snapshot Positioning 

    Liu, Xiao; Ribot, Miguel Ángel; Gusi, Adrià; Closas Gómez, Pau; Rovira Garcia, Adrià; Sanz Subirana, Jaume (ION Publications (The Institute of navigation), 2020)
    Conference report
    Restricted access - author's decision
    With snapshot positioning becoming popular for various applications, the present contribution focuses on the feasibility of achieving Real Time Kinematics (RTK) positioning using snapshot data, i.e. a very brief interval ...

  • Ionospheric scintillation model limitations and impact in GNSS-R missions 

    Camps Carmona, Adriano José; González Casado, Guillermo; Juan Zornoza, José Miguel; Hyuk, Park; Barbosa, José (Institute of Electrical and Electronics Engineers (IEEE), 2020)
    Conference report
    Open Access
    The ionosphere impacts radio-wave propagation, notably up to a few GHz. The main applications impacted by the ionosphere are GNSS positioning and timing, Earth Observations (especially low frequency SAR missions e.g. ...

  • Graph centralities and cascading failures in networks 

    Comellas Padró, Francesc de Paula; Sánchez, Llorenç (2019)
    Conference report
    Restricted access - publisher's policy

  • Perturbing networks 

    Mitjana Riera, Margarida; Carmona Mejías, Ángeles; Encinas Bachiller, Andrés Marcos (2012)
    Conference lecture
    Open Access
    Semi-definite positive Schrödinger operators on finite connected networks are particular examples of a general class of self-adjoint operators called elliptic operators. Any elliptic operator defines an automorphism on the ...

  • Efficient polynomial delegation under standard assumptions 

    Morillo Bosch, M. Paz; Obrador Sureda, Marc (Institute of Electrical and Electronics Engineers (IEEE), 2013)
    Conference lecture
    Restricted access - publisher's policy
    In this paper we present a new scheme for verifiable delegation of polynomials in a cloud computing scenario. The security of our scheme is based on a standard assumption, the subgroup membership one. Furthermore, the ...

  • 7deMates 

    Alsina Aubach, Montserrat; Blasco Estrada, Alba; Pérez Hernández, Noèlia; Rodríguez García, Carla (Federación Española de Sociedades de Profesores de Matemáticas (FESPM), 2019)
    Conference lecture
    Restricted access - publisher's policy
    7demates es un grupo de trabajo, un laboratorio, de profesores de matemáticas de educación secundaria y universidad, y jóvenes con talento para las matemáticas, para fomentar el conocimiento de las matemáticas y las STEAM. ...

  • A nonparametric statistical model for the selection of significant variables acting in the deterioration of built façades 

    Serrat Piè, Carles; Gibert Armengol, Vicente; Casas Rius, Joan Ramon; Rapinski, Jacek (International Centre for Numerical Methods in Engineering (CIMNE), 2020)
    Conference report
    Open Access
    Serrat and Gibert (2011) introduced the use of survival analysis techniques for the study of time-to-failure in the facades of a building stock. Those techniques have been implemented in a predictive system that incorporates ...

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