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Now showing items 2911-2920 of 3805
A Measurement-based Multipath Channel Model for Signal Propagation in Presence of Wind Farms in the UHF Band
(IEEE, 2013-10-15)
[EN] Scattering signals on wind turbines may lead to
degradation problems on the communication systems provided
in the UHF band, such as terrestrial television broadcasting,
broadband wireless systems or public safety ...
Characterization of non-intentional emissions from distributed energy resources up to 500 kHz: A case study in Spain
(Elsevier, 2019-09-06)
[EN] Narrow Band Power Line Communications (NB-PLC) systems are currently used for smart metering and power quality monitoring as a part of the Smart Grid (SG) concept. However, non-intentional emissions generated by the ...
A pre-crisis vs. crisis analysis of peripheral EU stock markets by means of wavelet transform and a nonlinear causality test
(Elsevier, 2018)
This paper presents an analysis of EU peripheral (so-called PIIGS) stock market indices and the SandP Europe 350 index (SPEURO), as a European benchmark market, over the pre-crisis (2004 2007) and crisis (2008 2011) periods. ...
A multi-resolution and multivariate analysis of the dynamic relationships between crude oil and petroleum-product prices
(Elsevier, 2018)
This paper proposes the use of a novel multivariate, dynamic approach wavelet local multiple correlation (WLMC) (Fernández-Macho, 2018) to analyse the relationship between oil time series in the time-scale domain. This ...
Field Trials for the Empirical Characterization of the Low Voltage Grid Access Impedance From 35 kHz to 500 kHz
(IEEE, 2019-06-21)
[EN] The access impedance of low-voltage (LV) power networks is a major factor related to the performance of the narrow-band power line communications (NB-PLCs) and, in a wider sense, to electromagnetic compatibility (EMC) ...
Empirical Evaluation of the Impact of Wind Turbines on DVB-T Reception Quality
(IEEE, 2011-12-09)
[EN] This paper describes the results of two extensive measurement campaigns for evaluating the potential impact of scattered signals from wind turbines on terrestrial DTV reception quality in the UHF band. A detailed ...
Mobilizing company members' full innovative potential
(Wiley, 2012-06-06)
Most of the literature on innovation management highlights the fundamental role played by people in the innovation process and the need to fully develop the creative and innovative potential of organizations' members. This ...
An Empirical Comparative Study of Prediction Methods for Estimating Multipath Due to Signal Scattering from Wind Turbines on Digital TV Services
(IEEE, 2011-04-29)
[EN] Several authors have theoretically studied the
effect of wind turbines on the propagation of electromagnetic
waves in the UHF band. The International Telecommunication
Union also proposes a simplified model to ...
Combining spectral and temporal modification techniques for speech intelligibility enhancement
(Elsevier, 2019-11-02)
Modifying clean speech prior to output in noisy conditions can lead to substantial intelligibility gains. Most algorithms operate by redistributing energy across the signal, leaving the timing of the underlying speech ...
Non-native consonant acquisition in noise: Effects of exposure/ test similarity
(AIP Publishing, 2019-07-22)
When faced with speech in noise, do listeners rely on robust cues or can they make use of joint speech-plus-noise patterns based on prior experience? Recent studies have suggested that listeners are better able to identify ...