Ara es mostren els items 57-76 de 101

    • 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
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      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
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      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
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      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)
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      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
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      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
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      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
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      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) ...
    • Offline routing and regenerator placement and dimensioning for translucent OBS networks 

      Pedrola Escribà, Òscar; Careglio, Davide; Klinkowski, Miroslaw; Solé Pareta, Josep (IEEE Press. Institute of Electrical and Electronics Engineers, 2011-09)
      Article
      Accés restringit per política de l'editorial
      The deployment of translucent optical networks is considered the most promising short term solution to decrease costs and energy consumption in optical backbone networks. In fact, translucent wavelength switched optical ...
    • On the benefits of optical gain-clamped amplification in optical burst switching networks 

      Zannin, Marcelo; Ennser, Karin; Taccheo, Stefano; Careglio, Davide; Solé Pareta, Josep; Aracil Rico, Javier (2009-12-01)
      Article
      Accés obert
      This paper investigates the performance of an all-optical method for amplification gain control to be applied in the next generation of optical networks. An erbium-doped fiber amplifier is implemented in a simple and passive ...
    • On the benefits of RINA over programmable optical networks for dynamic and smart resource management 

      Leon Gaixas, Sergio; Perelló Muntan, Jordi; Grasa, Eduard; Careglio, Davide; Spadaro, Salvatore (2015)
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      In this paper, we describe the basics of the Recursive InterNetwork Architecture (RINA) and its advantages as a packet transport technology over programmable optical networks. In particular, its seamless integration over ...
    • On the experimentation of the novel GCMR multicast routing in a large-scale testbed 

      Careglio, Davide; Papadimitriou, Dimitri; Agraz Bujan, Fernando; Sahhaf, Sahel; Perelló Muntan, Jordi; Tavernier, Wouter (Institute of Electrical and Electronics Engineers (IEEE), 2014)
      Comunicació de congrés
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      Originally defined in the 90s, multicast is nowadays (re)gaining interest given the increasing popularity of multimedia streaming/content traffic and the explosion of cloud services. In fact, multicast yields bandwidth ...
    • On the offline physical layer impairment aware RWA algorithms in transparent optical networks: state-of-the-art and beyond 

      Azodolmolky, Siamak; Pointurier, Yvan; Klinkowski, Miroslaw; Marín Tordera, Eva; Careglio, Davide; Solé Pareta, Josep; Angelou, Marianna; Tomkos, Ioannis (IEEE Press and Wiley, 2009-02-18)
      Text en actes de congrés
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      In transparent optical networks with no regeneration, the problem of capacity allocation to traffic demands is called "Roting and Wavelength Assignment". Much work on this topic recently has focused on the dynamic case, ...
    • On the performance of flexgrid-based optical networks 

      Velasco Esteban, Luis Domingo; Ruiz Ramírez, Marc; Pedrola Escribà, Òscar; Castro Casales, Alberto; Klinkowski, Miroslaw; Careglio, Davide; Comellas Colomé, Jaume (Institute of Electrical and Electronics Engineers (IEEE), 2012)
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      Accés restringit per política de l'editorial
      The ever increasing IP traffic volume has finally brought to light the high inefficiency of current wavelength-routed rigid-grid networks in matching the client layer requirements. Such an issue results in the deployment ...
    • On the physical impairments constraint in OBS networks 

      Pedrola Escribà, Òscar; Careglio, Davide; Klinkowski, Miroslaw; Solé Pareta, Josep (2010)
      Text en actes de congrés
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      The introduction of sub-wavelength switching is one of the main objectives of the future transparent optical mesh networks. One strong candidate is Optical Burst Switching (OBS) which improves the resource utilisation by ...
    • OSPF-TE extensions for green routing in optical networks 

      Wang, Jiayuan; Ricciardi, Sergio; Manolova Vasileva, Anna; Ruepp, Sarah; Careglio, Davide; Dittmann, L. (2012)
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      This paper proposes extensions to the OSPF-TE protocol to enable green routing in GMPLS-controlled optical networks. Simulation results show a remarkable reduction in CO 2 emissions by preferring network elements ...
    • PCE algorithm for traffic grooming and QoS in multi-layer/multi-domain IP over WDM networks 

      Sócrates Dantas, Joana; Careglio, Davide; Melo Silveira, Regina; Vicente Ruggiero, Wilson; Solé Pareta, Josep (IEEE, 2011)
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      Differentiated services provision according to clients or applications is an added feature that network operators ambition to fully provide. One of the possible approaches is to map DiffServ into MPLS based network. However ...
    • Performance analysis of multicast routing algorithms 

      Papadimitriou, Dimitri; Careglio, Davide; Demeester, Piet M.A. (Institute of Electrical and Electronics Engineers (IEEE), 2014)
      Text en actes de congrés
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      This paper provides a theoretical performance analysis of different classes of multicast routing algorithms, namely the Shortest Path Tree, the Steiner Tree, compact routing and greedy routing. Our motivation is to determine ...