Ara es mostren els items 19384-19403 de 86182

  • Cooperative detection of primary user emulation attacks in CRNs 

    León Abarca, Olga; Hernández Serrano, Juan; Soriano Ibáñez, Miguel (2012)
    Article
    Accés restringit per política de l'editorial
    Cognitive radio networks (CRNs) can improve the utilization of the spectrum by making use of licensed spectrum in an opportunistic manner. With such purpose, coexistence mechanisms among CRN nodes or secondary users and ...
  • Cooperative download in urban vehicular networks 

    Fiore, Marco; Barceló Ordinas, José María (IEEE Computer Society Publications, 2009-10-12)
    Text en actes de congrés
    Accés obert
    We target urban scenarios where vehicular users can download large files from road-side Access Points (APs), and define a framework to exploit opportunistic encounters between mobile nodes to increase their transfer rate. ...
  • Cooperative energy harvesting-adaptive MAC protocol for WBANs 

    Esteves, Volker; Antonopoulos, Angelos; Kartsakli, Elli; Puig Vidal, Manel; Miribel Català, Pere Lluís; Verikoukis, Christos (2015-06-01)
    Article
    Accés obert
    In this paper, we introduce a cooperative medium access control (MAC) protocol, named cooperative energy harvesting (CEH)-MAC, that adapts its operation to the energy harvesting (EH) conditions in wireless body area networks ...
  • Cooperative game analysis of a supply chain with one risk-neutral supplier and two risk-averse retailers 

    Li, Changwen; Zhou, Yongwu; Lu, Yong; Guo, Jinsen (OmniaScience, 2014-10)
    Article
    Accés obert
    Purpose: This paper considers a two-echelon supply chain composed of one risk-neutral supplier and two risk-averse retailers. The retailers obtain production from the supplier and sell them to the market. Based on the ...
  • Cooperative games with a priori unions: introduction of a wide set of solutions 

    Giménez Pradales, José Miguel (2006-12-04)
    Report de recerca
    Accés obert
    The semivalues are solution concepts for cooperative games that assign to each player a weighted sum of his/her marginal contributions to the coalitions, where the weights only depend on the coalition size. The Shapley ...
  • Cooperative inquiry for learning and connectedness 

    Ospina, Sonia; Hoffman-Pinilla, Amparo; El Hadidi, Waad (Global University Network for Innovation (GUNI), 2008)
    Article
    Accés obert
    Over the past few decades, academics and non-academics alike have raised concerns about higher education’s self-serving patterns and deviation from a higher sense of purpose. Commentators have exposed reasons for why ...
  • Cooperative issues in network robot systems in urban areas 

    Sanfeliu Cortés, Alberto (ISR, 2008)
    Text en actes de congrés
    Accés obert
    Presentation of cooperative topics in Network Robot Systems in the URUS project
  • Cooperative Load Balancing in IEEE 802.11 Networks with Cell Breathing 

    García Villegas, Eduard; Vidal Ferré, Rafael; Paradells Aspas, Josep (Institute of Electrical and Electronics Engineers (IEEE), 2008-07-06)
    Text en actes de congrés
    Accés obert
    IEEE 802.11 WLANs (Wi-Fi) are widely deployed for providing Internet access in public spaces, known as Hot Spots. In these scenarios, users tend to be "gregarious” and essentially static. Since association and roaming ...
  • Cooperative localization algorithms in ultra-wideband systems for indoor positioning 

    Pedrera Rubio, Ferran (Universitat Politècnica de Catalunya, 2013-02-13)
    Projecte/Treball Final de Carrera
    Accés obert
    [ANGLÈS] Indoor positioning has become an important research field in recent years. This is due to the potential services or products that can be offered, which would be very useful for users in several applications, and ...
  • Cooperative multicast exploiting physical layer network coding: a performance analysis 

    Miliotis, Vasileios; Alonso Zárate, Luis Gonzaga; Verikoukis, Christos (Institute of Electrical and Electronics Engineers (IEEE), 2013)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    In this paper, a novel cooperative scheme based on Physical layer Network Coding (PNC) for short range communication (SRC) networks is proposed. We present a scenario of overlapping networks with multicast traffic and ...
  • Cooperative Positioning Studies based on Wireless Local Area Networks (WLANs) 

    Caisaguano Vásquez, Tery Osmar (Universitat Politècnica de Catalunya, 2014-01-15)
    Projecte/Treball Final de Carrera
    Accés obert
    [ANGLÈS] Location information and location-based service have gained importance in recent years because, based on their concept, a new business market has been opened which encompass emergency services, security, monitoring, ...
  • Cooperative robot movements for guiding and regrouping people using cost function evaluation 

    Garrell Zulueta, Anais; Sanfeliu Cortés, Alberto (2010)
    Text en actes de congrés
    Accés obert
    The objective of this research is to optimize robots cooperative work and obtain the minimum displacement of humans in a guiding people mission, where some individuals can escape from the formation and must be regrouped ...
  • Cooperative robots in people guidance mission: DTM model validation and local optimization motion 

    Garrell Zulueta, Anais; Sanfeliu Cortés, Alberto (2010)
    Presentació
    Accés obert
    This work presents a novel approach for optimizing locally the work of cooperative robots and obtaining the minimum displacement of humans in a guiding people mission. This problem is addressed by introducing a “Discrete ...
  • Cooperative signal amplification for molecular communication in nanonetworks. 

    Abadal Cavallé, Sergi (Universitat Politècnica de Catalunya, 2011-09-19)
    Projecte Final de Màster Oficial
    Accés obert
    English: Nanotechnology is enabling the development of devices in a scale ranging from a few to hundreds of nanometers. Communication between these devices greatly expands the possible applications, increasing the complexity ...
  • Cooperative social robots to accompany groups of people 

    Garrell Zulueta, Anais; Sanfeliu Cortés, Alberto (2012)
    Article
    Accés obert
    This study proposes a new model for guiding people in urban settings using multiple robots that work cooperatively. More speci cally, this investigation describes the circumstances in which people might stray from the ...
  • Cooperative social robots: accompanying, guiding and interacting with people 

    Garrell Zulueta, Anaís (Universitat Politècnica de Catalunya, 2013-12-20)
    Tesi
    Accés obert
    The development of social robots capable of interacting with humans is one of the principal challenges in the field of robotics. More and more, robots are appearing in dynamic environments, like pedestrian walkways, ...
  • Cooperative user models in statistical dialog simulators 

    González Bermúdez, Meritxell; Quarteroni, Silvia; Riccardi, Giuseppe; Varges, Sebastian (2010)
    Comunicació de congrés
    Accés restringit per política de l'editorial
    Statistical user simulation is a promising methodology to train and evaluate the performance of (spoken) dialog systems. We work with a modular architecture for data-driven simulation where the "intentional" component ...
  • Cooperative work and videoconferencing: practical tools for engineering studies 

    García-Almiñana, Daniel; Rodríguez Donaire, Silvia (2011)
    Text en actes de congrés
    Accés obert
    In this communication some work experiences in collaborative environments for engineering studies are presented. Besides, the combined potential for cooperative work and videoconferencing is also shown as an element ...
  • Cooperative-corrector multivariable fuzzy controller 

    Rivero Núñez, Mª Cristina; Lasso, P.; Monasterio-Huelin Maciá, Felix (Universitat Politècnica de Catalunya. Secció de Matemàtiques i Informàtica, 1998)
    Article
    Accés obert
    This paper deals with the decomposition problem of a multivariable fuzzy controller. For this, is proposed the use of notions taken from the framework of the Game Theory. Using the notion of {\it couple} between variables, ...
  • CooPNC: a cooperative multicast protocol exploiting physical layer network coding 

    Miliotis, Vasileios; Alonso Zárate, Luis Gonzaga; Verikoukis, Christos (Elsevier, 2014-03)
    Article
    Accés restringit per política de l'editorial
    In this paper we present a multicast protocol for short range networks that exploits the characteristics of physical layer network coding. In our proposed protocol, named CooPNC, we provide a novel cooperative approach ...