Ara es mostren els items 47-66 de 101

    • GPON and EP2P: a techno-economic study 

      Ricciardi, Sergio; Santos Boada, Germán; Careglio, Davide; Domingo Pascual, Jordi (2012)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      New services like Video on demand/Internet Protocol Television, Voice over IP and high speed Internet access demand very high bandwidth to provide Triple Play services to the customers. The ADSL/ADLS2+ and the VDSL/VDSL2 ...
    • Guaranteeing QoS requirements in long-haul RINA networks 

      León Gaixas, Sergio; Perelló Muntan, Jordi; Careglio, Davide; Tarzan Lorente, Miquel (Institute of Electrical and Electronics Engineers (IEEE), 2017)
      Text en actes de congrés
      Accés obert
      In the last years, networking scenarios have been evolving, hand-in-hand with new and varied applications with heterogeneous Quality of Service (QoS) requirements. These requirements must be efficiently and effectively ...
    • Hardware leverages for energy reduction in large-scale distributed systems 

      Careglio, Davide; Da Costa, Georges; Ricciardi, Sergio (Wiley, 2015-03-01)
      Capítol de llibre
      Accés restringit per política de l'editorial
      This chapter provides the summary and references on existing and future leverages to adapt the underlying hardware infrastructures of large-scale distributed computing systems in order to decrease their energy consumption. ...
    • ILP modeling of many-to-many replicated multimedia communication 

      Walkowiak, Krzysztof; Bulira, Damian; Careglio, Davide (2013-09-01)
      Article
      Accés restringit per política de l'editorial
      On-line communication services were evolving from a simple text-based chats towards sophisticated videopresence appliances. The bandwidth consumption of those services is constantly growing due to the technology development ...
    • ILP modeling of many-to-many transmissions in computer networks 

      Walkowiak, Krzysztof; Bulira, Damian; Careglio, Davide (Polish Academy of Sciences, 2012)
      Text en actes de congrés
      Accés obert
      Information flow in nowadays networks spreads in the exponential way. This fact is caused by the intensive changes in the Internet communication paradigms. Transmission in the Internet evolved from the simple one-to-one ...
    • Internet routing paths stability model and relation to forwarding paths 

      Papadimitriou, Dimitri; Careglio, Davide; Tarissan, Fabien; Demeester, Piet M.A. (Institute of Electrical and Electronics Engineers (IEEE), 2013)
      Text en actes de congrés
      Accés obert
      Analysis of real datasets to characterize the local stability properties of the Internet routing paths suggests that extending the route selection criteria to account for such property would not increase the routing path ...
    • Introduction to IP over WDM 

      Spadaro, Salvatore; Careglio, Davide; Aracil Rico, Javier; Fernández Palacios, Juan Pedro; Jajszczyk, Andrzej; Larrabeiti, David; López, Víctor; Masip Bruin, Xavier; Sánchez López, Sergio (Springer, 2009-06-01)
      Capítol de llibre
      Accés restringit per política de l'editorial
      The simple idea of having IP traffic directly transported over optical Wavelength Division Multiplexing (WDM) technology (“Internet Protocol (IP) over WDM”) has been envisioned as the future for the telecommunication ...
    • Iterative research method applied to the design and evaluation of a dynamic multicast routing scheme 

      Papadimitriou, Dimitri; Coras, Florin-Tudorel; Rodríguez Natal, Alberto; Carela Español, Valentín; Careglio, Davide; Fàbrega, Lluís; Vila, Pere; Demeester, Piet M.A. (Springer-Verlag Berlin Heidelberg, 2013)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Following the iterative research cycle process, this chapter elaborates a methodology and documents the steps followed for the design of a dynamic multicast routing algorithm, referred to as Greedy Compact Multicast Routing. ...
    • Joint content placement and lightpath routing and spectrum assignment in CDNs over elastic optical network scenarios 

      Perelló Muntan, Jordi; Walkowiak, Krzysztof; Klinkowski, Miroslaw; Spadaro, Salvatore; Careglio, Davide (2016-03-01)
      Article
      Accés obert
      In this work, we address the problem of jointly deciding the placement of the contents delivered by a Content Distribution Network (CDN) among the available data centers, together with the allocation of the lightpaths ...
    • Keeping the packet sequence in optical packet-switched networks 

      Callegati, Franco; Careglio, Davide; Cerroni, Walter; Muretto, Giovanni; Raffaelli, Carla; Solé Pareta, Josep; Zaffoni, Paolo (2005-11-07)
      Article
      Accés restringit per política de l'editorial
      This paper deals with optical packet switches with limited buffer capabilities, subject to asynchronous, variable-length packets and connection-oriented operation. The focus is put on buffer scheduling policies and queuing ...
    • Life in the AI era - First result of the Erasmus+ HEDY project 

      Careglio, Davide; Angulo Bahón, Cecilio; Alves Moreira, Ana; Jakobi, Antonia; Dimova, Rozalina; Dovramadjiev, Tihomir; Ejubovic, Adisa; Sukhovii, Evgenia; Kollar, Csaba; Szabo, Gyula (Universitat Politècnica de Catalunya, 2022-09)
      Text en actes de congrés
      Accés obert
      HEDY - Life in the AI era is a 2-year Erasmus+ project started in November 2021 targeting higher education audience. Its goal is to offer a comprehensive and shared view of how Artificial Intelligence (AI) is affecting our ...
    • Llibre blanc sobre la intel·ligència artificial aplicada a la ciberseguretat 

      Reyes de los Mozos, Mario; Pozo, Abel; Calvo Ibáñez, Albert; Ortiz Rabella, Nil; Careglio, Davide; Hernando Pericás, Francisco Javier; Gibert, Karina (Centre of Innovation for Data Tech and Artificial Intelligence (CIDAI), 2023)
      Llibre
      Accés obert
      Els darrers anys els avanços a la ciència de la Intel·ligència Artificial han estat remarcables, tenint gran impacte en diferents sectors industrials i socials. Existeixen en la actualitat una gran quantitat d’exemples que ...
    • Measurement-based experimental research methodology 

      Papadimitriou, Dimitri; Fàbrega Soler, LLuís; Vilà Talleda, Pere; Careglio, Davide; Demeester, Piet M.A. (Springer, 2013)
      Text en actes de congrés
      Accés obert
      Aiming at creating a dynamic between elaboration, realization, and validation by means of iterative cycles of experimentation, Future Internet Research and Experimentation (FIRE) projects have been rapidly confronted to ...
    • Measurement-based research: methodology, experiments, and tools 

      Papadimitriou, Dimitri; Fàbrega, Lluís; Vila Fumas, Pere; Careglio, Davide; Demeester, Piet (2012-10)
      Article
      Accés restringit per política de l'editorial
      In this paper, we report the results of the workshop organized by the FP7 EULER project on measurement-based research and associated methodology, experiments and tools. This workshop aimed at gathering all Future Internet ...
    • Metaheuristic hybridizations for the regenerator placement and dimensioning problem in sub-wavelength switching optical networks 

      Pedrola Escribà, Òscar; Careglio, Davide; Klinkowski, Miroslaw; Velasco Esteban, Luis Domingo; Bergman, K.; Solé Pareta, Josep (Elsevier, 2013-02-01)
      Article
      Accés restringit per política de l'editorial
      Physical layer impairments severely limit the reach and capacity of optical systems, thereby hampering the deployment of transparent optical networks (i.e., no electrical signal regenerators are required). Besides, the ...
    • Modelling and performance evaluation of a national scale switchless based network 

      Careglio, Davide; Solé Pareta, Josep; Junyent Giralt, Gabriel; Spadaro, Salvatore; Masip Torne, Jaume; Noguera Serra, Juan José (Springer, 2000)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      In a packet switching based scenario, optical technologies can not completely overcome the problem of insufficient network capacity, due to limitations produced by the presence of electronic switches and regenerators in ...
    • Modelling and performance evaluation of a translucent OBS network architecture 

      Pedrola Escribà, Òscar; Careglio, Davide; Klinkowski, Miroslaw; Solé Pareta, Josep (IEEE Computer Society Publications, 2010)
      Text en actes de congrés
      Accés obert
      Most research works in optical burst switching (OBS) networks do not take into account the impact of physical layer impairments (PLIs) either by considering fully transparent (i.e., using optical 3R regeneration) or opaque ...
    • Non-linear optimization for multi-path source routing in OBS networks 

      Klinkowski, Miroslaw; Pioro, Michal; Careglio, Davide; Marciniak, Marian; Solé Pareta, Josep (2007-12)
      Article
      Accés obert
      Optical Burst Switching (OBS) architectures without buffering capabilities are sensitive to burst losses. A proper routing strategy may help to reduce such congestion. In this letter we present a novel approach for OBS ...
    • Nonparametric statistical methods to analyze the internet connectivity reliability 

      Papadimitriou, Dimitri; Careglio, Davide (Institute of Electrical and Electronics Engineers (IEEE), 2015)
      Text en actes de congrés
      Accés obert
      Facing computational complexity when modeling network reliability by means of parametric models and corresponding statistical methods, in the present study, we apply nonparametric statistical methods, such as the Kaplan-Meier ...
    • Offline impairment-aware RWA and regenerator placement in translucent optical networks 

      García Manrubia, Bélen; Pavón Mariño, Pablo; Aparicio Pardo, Ramón; Klinkowski, Miroslaw; Careglio, Davide (2010-09-29)
      Report de recerca
      Accés obert
      In translucent optical networks the physical layer impairments degrading the optical signal are considered in the network design. In this paper we investigate the offline problem of Routing and Wavelength Assignment (RWA) ...