نتایج جستجو برای: global frequency
تعداد نتایج: 914898 فیلتر نتایج به سال:
The WP4 “Security” work package of BRIDGE is examining ways to ensure that RFID tags, readers, network infrastructure, and RFID services are developed in harmony with security features to enable effective and safe deployment of applications in various business sectors. However, some organizations tend to see security as nothing more than an extra feature or a “nice to have” for RFID deployments...
In this paper, our focus is to assure a global frequency synchronization in OFDMA-based wireless mesh networks with local information. To acquire the global synchronization in distributed manner, we propose a novel distributed frequency synchronization (DFS) method. DFS is a method that carrier frequencies of distributed nodes converge to a common value by repetitive estimation and averaging st...
Atrial fibrillation (AF) is increasingly recognized as an important cause of ischemic stroke whose importance is magnified because of the remarkable efficacy of oral anticoagulants for stroke prevention. Hospital-based registry data from the 1980s and 1990s estimated that 16% of ischemic strokes were associated with AF. However, studies published Background and Purpose—Atrial fibrillation (AF) ...
Abstract: The Hilbert transform is a well-known tool of time series analysis that has been widely used to investigate oscillatory signals that resemble a noisy periodic oscillation, because it allows instantaneous phase and frequency to be estimated, which in turn uncovers interesting properties of the underlying process that generates the signal. Here we use this tool to analyze atmospheric da...
Individual radial frequency (RF) patterns are generated by modulating a circle's radius as a sinusoidal function of polar angle and have been shown to tap into global shape processing mechanisms. Composite RF patterns can reproduce the complex outlines of natural shapes and examining these stimuli may allow us to interrogate global shape mechanisms that are recruited in biologically relevant ta...
GPS, well known as a versatile, global tool for positioning, has also become the primary system for distributing time and frequency. GPS receivers are fixtures in telecommunication networks, and calibration and testing laboratories. They make it possible to synchronize clocks and calibrate and control oscillators in any facility that can place an antenna outdoors for lineof-sight reception of t...
In this study – which is part of an extensive investigation of the prosodic features of emotional speech – global trends of fundamental frequency were examined. The primary goal was to test the use of this parameter to characterize a specific set of emotions (happiness, anger, anxiety, sadness, disgust and boredom). Global F0 trend was measured in the form of the gradient of the linear regressi...
P. L. Woodworth* , J. R. Hunter, M. Marcos, P. Caldwell, M. Men endez and I. Haigh National Oceanography Centre, Liverpool L3 5DA, UK Antarctic Climate & Ecosystems Cooperative Research Centre, Hobart, Tasmania 7001, Australia IMEDEA (UIB-CSIC), 07190 Esporles, Balearic Islands, Spain Joint Archive for Sea Level, Department of Oceanography, University of Hawaii at Manoa, Honolulu, HI 96822, USA...
Not all surveillance is intended as such. In spite of intentions, the valence of some technological systems toward surveillance should not be underestimated. Within the domain of health care, there has been an increased emphasis on the use of information and communication technologies to streamline processes by centralizing patients’ records, locating medical equipment, and tracking hospital st...
EURO-CORDEX (Coordinated Downscaling Experiment over Europe), a new generation of downscaled climate projections, has become available for climate change impact studies in Europe. New opportunities arise in the investigation of potential effects of a warmer world on meteorological and hydrological extremes at regional scales. In this work, an ensemble of EURO-CORDEX RCP8.5 scenarios is used to ...
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