2,514 research outputs found

    Visual Spike-based Convolution Processing with a Cellular Automata Architecture

    Get PDF
    this paper presents a first approach for implementations which fuse the Address-Event-Representation (AER) processing with the Cellular Automata using FPGA and AER-tools. This new strategy applies spike-based convolution filters inspired by Cellular Automata for AER vision processing. Spike-based systems are neuro-inspired circuits implementations traditionally used for sensory systems or sensor signal processing. AER is a neuromorphic communication protocol for transferring asynchronous events between VLSI spike-based chips. These neuro-inspired implementations allow developing complex, multilayer, multichip neuromorphic systems and have been used to design sensor chips, such as retinas and cochlea, processing chips, e.g. filters, and learning chips. Furthermore, Cellular Automata is a bio-inspired processing model for problem solving. This approach divides the processing synchronous cells which change their states at the same time in order to get the solution.Ministerio de Educación y Ciencia TEC2006-11730-C03-02Ministerio de Ciencia e Innovación TEC2009-10639-C04-02Junta de Andalucía P06-TIC-0141

    Cavity-Enhanced Two-Photon Interference using Remote Quantum Dot Sources

    Full text link
    Quantum dots in cavities have been shown to be very bright sources of indistinguishable single photons. Yet the quantum interference between two bright quantum dot sources, a critical step for photon based quantum computation, has never been investigated. Here we report on such a measurement, taking advantage of a deterministic fabrication of the devices. We show that cavity quantum electrodynamics can efficiently improve the quantum interference between remote quantum dot sources: poorly indistinguishable photons can still interfere with good contrast with high quality photons emitted by a source in the strong Purcell regime. Our measurements and calculations show that cavity quantum electrodynamics is a powerful tool for interconnecting several devices.Comment: 5 pages, 4 figures (Supp. Mat. attached

    Development of a Map Viewer for Archipielago de Cabrera National Park, Balearic Islands, Spain

    Get PDF
    This chapter describes the development of a map viewer (accessible in Spanish at http://www .ideo-cabrera.ieo.es) for the Archipelago de Cabrera National Park, Balearic Islands, Spain. The park is a region with various forms of protection, demonstrating the importance of this area and the need to expand knowledge about it and facilitate the management and monitoring of a wide range of environmental threats and hazards. The development of the map viewer (leveraging ArcGIS Viewer for Flex software) is one of the pioneering initiatives in Spain relating GIS technology to the marine environment. It is the result of extensive interinstitutional collaboration between the EU-US Marine Biodiversity research group of the Instituto Franklin-Universidad de Alcalá, the Instituto Español de Oceanografía, and the Organismo Autónomo de Parques Nacionales. Keywords for this chapter include GIS, web mapping, map viewer, Visor, metadata, WMS, INSPIRE, ArcGIS, Geoportal, Cabrera, parque nacional, national park, Islas Baleares, Balearic Islands, España, Spain.Postprin

    A child with resistant Kawasaki disease successfully treated with anakinra: a case report

    Get PDF
    Background: Kawasaki disease (KD) is an acute self-limited systemic vasculitis of unknown etiology. Intravenous immunoglobulin (IVIG) is an effective treatment and decreases the risk of cardiac complications to less than 5%. In spite of its effectiveness, some children do not respond to this therapy and still develop coronary aneurysms (CAA). The optimal treatment for IVIG non-responsive patients remains controversial although corticoids have been suggested to be an effective treatment in some patients. For those patients still resistant to IVIG and corticoids, interleukin-1 receptor antagonists (IL-1RA) such anakinra could be an alternative. Case presentation: We present a 3 year-old Caucasian patient with KD without cardiac complications but with important resistance to treatment. After becoming resistant to IVIG and corticoids, anakinra proved to be an effective treatment. Conclusions: To our knowledge, this is the first report of the utility of IL-1RA in refractory KD without coronary impairment. The patient fulfilled the classical criteria for KD and, after becoming resistant to first and second line treatments, anakinra proved to be an effective treatment. Further studies are required to determine if this is an effective treatment option for other cases of resistant Kawasaki disease
    corecore