Ara es mostren els items 31-50 de 52

    • Machine Learning (ML) module 

      Barceló Ordinas, José María; García Vidal, Jorge; Ferrer Cid, Pau (Universitat Politècnica de Catalunya, 2023-06-27)
      Apunts
      Accés obert
    • Multisensor data fusion calibration in IoT air pollution platforms 

      Ferrer Cid, Pau; Barceló Ordinas, José María; García Vidal, Jorge; Ripoll, Anna; Viana, Mar (2020-04-01)
      Article
      Accés obert
      This article investigates the calibration of low-cost sensors for air pollution. The sensors were deployed on three Internet of Things (IoT) platforms in Spain, Austria, and Italy during the summers of 2017, 2018, and 2019. ...
    • Node clustering based on overlapping FoVs for wireless multimedia sensor networks 

      Alaei, Mohammad; Barceló Ordinas, José María (2010)
      Text en actes de congrés
      Accés obert
      Wireless Multimedia Sensor nodes sense areas that are uncorrelated to the areas covered by radio neighbor sensors. Thus, node clustering for coordinating multimedia sensing and processing cannot be based on classical sensor ...
    • Non-linear models for black carbon exposure modelling using air pollution datasets 

      Puig Rovira, Josep M.; Paredes Ahumada, Juan Antonio; Barceló Ordinas, José María; García Vidal, Jorge; Reche Andúgar, Cristina; Sola Salvatierra, Yolanda; Fung, Pascale; Petaja, Tuukka; Hussein, Tareq; Viana Rodríguez, Mar (Elsevier, 2022-09-01)
      Article
      Accés obert
      Black carbon (BC) is a product of incomplete combustion, present in urban aerosols and sourcing mainly from road traffic. Epidemiological evidence reports positive associations between BC and cardiovascular and respiratory ...
    • Optimal data compression for lifetime maximization in wireless sensor networks operating in stealth mode 

      Incebacak, Davut; Zilan, Ruken; Tavli, Bulent; Barceló Ordinas, José María; García Vidal, Jorge (Elsevier, 2015-01)
      Article
      Accés obert
      Contextual privacy in Wireless Sensor Networks (WSNs) is concerned with protecting contextual information such as whether, when, and where the data is collected. In this context, hiding the existence of a WSN from adversaries ...
    • Power management in sensing subsystem of wireless multimedia sensor networks 

      Alaei, Mohammad; Barceló Ordinas, José María (InTech — Open Access Company, 2012-03-14)
      Capítol de llibre
      Accés obert
      A wireless sensor network consists of sensor nodes deployed over a geographical area for monitoring physical phenomena like temperature, humidity, vibrations, seismic events, and so on. Typically, a sensor node is a tiny ...
    • Power saving trade-offs in delay/disruptive tolerant networks 

      Trullols Cruces, Óscar; Morillo Pozo, Julián David; Barceló Ordinas, José María; García Vidal, Jorge (IEEE Press. Institute of Electrical and Electronics Engineers, 2011)
      Comunicació de congrés
      Accés restringit per política de l'editorial
      Wireless nodes such as smart-phones in which the WiFi wireless card is continuously on, consume battery energy in just a few hours. Moreover, in many scenarios, an always-on wireless card is useless because there is often ...
    • Priority-based node selection and scheduling for wireless multimedia sensor networks 

      Alaei, Mohammad; Barceló Ordinas, José María (IEEE Computer Society Publications, 2010)
      Text en actes de congrés
      Accés obert
      A critical aspect of applications with wireless sensor networks is network lifetime. Sensing and communications consume energy particularly in wireless multimedia sensor networks (WMSN) due to huge amount of data generated ...
    • Raw data collected from NO2, O3 and NO air pollution electrochemical low-cost sensors 

      Ferrer Cid, Pau; Barceló Ordinas, José María; García Vidal, Jorge (Elsevier, 2022-12)
      Article
      Accés obert
      Recently, the monitoring of air pollution by means of lowcost sensors has become a growing research field due to the study of techniques based on machine learning to improve the sensors’ data quality. For this purpose, ...
    • Real-time multimedia monitoring in large-scale wireless multimedia sensor networks: research challenges 

      Cesana, Matteo; Redondi, Alessandro; Tiglao, Nestor; Grilo, Antonio; Barceló Ordinas, José María; Alaei, Mohammad; Todorova, Petia (Institute of Electrical and Electronics Engineers (IEEE), 2012)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Wireless Sensor Networks (WSNs) have enjoyed dramatic developments over the last decade. The availability of CMOS cameras and microphones enlarged the scope of WSNs paving the way to the development of Wireless Multimedia ...
    • Review of linear algebra and applications to data science 

      Barceló Ordinas, José María; García Vidal, Jorge; Ferrer Cid, Pau (Universitat Politècnica de Catalunya, 2023-07-17)
      Apunts
      Accés obert
    • Review of probability theory 

      Barceló Ordinas, José María; García Vidal, Jorge; Ferrer Cid, Pau (Universitat Politècnica de Catalunya, 2023-07-17)
      Apunts
      Accés obert
    • Robust proxy sensor model for estimating black carbon concentrations using low-cost sensors 

      Paredes Ahumada, Juan Antonio; Ferrer Cid, Pau; Barceló Ordinas, José María; García Vidal, Jorge; Reche Andúgar, Cristina; Viana Rodríguez, Mar (Association for Computing Machinery (ACM), 2023)
      Comunicació de congrés
      Accés obert
      Air quality monitoring sensor networks focusing on air pollution measure pollutants that are regulated by the authorities, such as CO, NO2, NO, SO2, O3, and particulate matter (PM10, PM2.5). However, there are other ...
    • RSU deployment for content dissemination and downloading in intelligent transportation systems 

      Reineri, Massimo; Casetti, Claudio; Chiasserini, Carla-Fabiana; Fiore, Marco; Trullols Cruces, Óscar; Barceló Ordinas, José María (IGI Global, 2012-10-01)
      Capítol de llibre
      Accés restringit per política de l'editorial
    • Sampling trade-offs in duty-cycled systems for air quality low-cost sensors 

      Ferrer Cid, Pau; García Calvete, Julio; Main Nadal, Aina; Ye, Zhe; Barceló Ordinas, José María; García Vidal, Jorge (Multidisciplinary Digital Publishing Institute (MDPI), 2022-05-23)
      Article
      Accés obert
      The use of low-cost sensors in conjunction with high-precision instrumentation for air pollution monitoring has shown promising results in recent years. One of the main challenges for these sensors has been the quality of ...
    • Self-calibration methods for uncontrolled environments in sensor networks: A reference survey 

      Barceló Ordinas, José María; Doudou, Messaoud; García Vidal, Jorge; Badache, Nadjib (Elsevier, 2019-05-15)
      Article
      Accés obert
      Growing progress in sensor technology has constantly expanded the number and range of low-cost, small, and portable sensors on the market, increasing the number and type of physical phenomena that can be measured with ...
    • Temporal pattern-based denoising and calibration for low-cost sensors in IoT monitoring platforms 

      Allka, Xhensilda; Ferrer Cid, Pau; Barceló Ordinas, José María; García Vidal, Jorge (Institute of Electrical and Electronics Engineers (IEEE), 2023-01-25)
      Article
      Accés obert
      The introduction of low-cost sensors (LCSs) in air quality Internet of Things (IoT) monitoring platforms presents the challenge of improving the quality of the data that these sensors provide. In this article, we propose ...
    • Testing the performance of sensors for ozone pollution monitoring in a citizen science approach 

      Ripoll Ruiz, Aleix; Viana, Mar; Padrosa, Marc; Querol Carceller, Xavier; Minutolo, Andrea; Hou, Kun Mean; Barceló Ordinas, José María; García Vidal, Jorge (Elsevier, 2019-02-15)
      Article
      Accés obert
      Tropospheric ozone (O3) is an environmental pollutant of growing concern, especially in suburban and rural areas where the density of air quality monitoring stations is not high. In this type of areas citizen science ...
    • Understanding, modeling and taming mobile malware epidemics in a large-scale vehicular network 

      Trullols Cruces, Óscar; Fiore, Marco; Barceló Ordinas, José María (Institute of Electrical and Electronics Engineers (IEEE), 2013)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      The large-scale adoption of vehicle-to-vehicle (V2V) communication technologies risks to significantly widen the attack surface available to mobile malware targeting critical automobile operations. Given that outbreaks of ...
    • VANET mobility modeling challenged by feedback loops 

      Meyer, Harald; Trullols Cruces, Óscar; Hess, Andrea; Hummel, Karin Anna; Barceló Ordinas, José María; Casetti, Claudio; Karlsson, Gunnar (2011)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      VANET applications are often providing street traffic information to vehicles and drivers, regarding, for instance, traffic conditions and parking space availability. This information influences in turn the driving behavior ...