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السجلات المعروضة 24973 -- 24992 من 49153
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Time-frequency diagnosis, condition monitoring, and fault detection
( Elsevier Inc. , 2016 , Book chapter)This chapter aims to further illustrate the (t,f) approach by selecting a few key generic applications of diagnosis and monitoring. The topic is represented by seven sections. One key application is electrical power ... -
Time-Frequency Distributions Based on Compact Support Kernels: Properties and Performance Evaluation
( IEEE , 2012 , Article)This paper presents two new time-frequency distributions (TFDs) based on kernels with compact support (KCS) namely the separable (CB) (SCB) and the polynomial CB (PCB) TFDs. The implementation of this family of TFDs ... -
Time-frequency features for pattern recognition using high-resolution TFDs: A tutorial review
( Elsevier Inc. , 2015 , Article)This paper presents a tutorial review of recent advances in the field of time-frequency (t, f) signal processing with focus on exploiting (t, f) image feature information using pattern recognition techniques for detection ... -
Time-frequency image descriptors-based features for EEG epileptic seizure activities detection and classification
( Institute of Electrical and Electronics Engineers Inc. , 2015 , Conference Paper)This paper presents new class of time-frequency (T-F) features for automatic detection and classification of epileptic seizure activities in EEG signals. Most previous methods were based only on signal features derived ... -
Time-frequency methodologies in neurosciences
( Elsevier Inc. , 2016 , Book chapter)This chapter presents a number of time-frequency (t,f) techniques that can provide advanced solutions to several problems in neuro-sciences with focus on the monitoring of brain abnormalities using EEG and other physiological ... -
Time-frequency methods in communications
( Elsevier Inc. , 2016 , Book chapter)The wide range of potential applications of time-frequency (t,f) methods made them an important tool in most fields of science and engineering. Telecommunications is one of the key industries where (t,f) methods started ... -
Time-frequency methods in radar, sonar, and acoustics
( Elsevier Inc. , 2016 , Book chapter)The fields of radar and sonar are traditionally key application areas and testing grounds for advances in signal processing, including time-frequency (t,f) methodologies; their significance is demonstrated in seven ... -
Time-Frequency Signal Analysis and Processing: A Comprehensive Reference
( Elsevier Inc. , 2015 , Book)Time-Frequency Signal Analysis and Processing (TFSAP) is a collection of theory, techniques and algorithms used for the analysis and processing of non-stationary signals, as found in a wide range of applications including ... -
Time-frequency signal and image processing of non-stationary signals with application to the classification of newborn EEG abnormalities
( IEEE , 2011 , Conference Paper)This paper presents an introduction to time-frequency (T-F) methods in signal processing, and a novel approach for EEG abnormalities detection and classification based on a combination of signal related features and image ... -
Time-frequency synthesis and filtering
( Elsevier Inc. , 2016 , Book chapter)This chapter presents methods and techniques to design time-varying linear systems such as filters with precise time-frequency (t,f) specifications; this capability can then allow one to model and predict accurately the ... -
Time-motion analysis of elite male kickboxing competition
( NSCA National Strength and Conditioning Association , 2014 , Article)Time-motion analysis of elite male kickboxing competition. J Strength Cond Res 28(12): 3537–3543, 2014—The objective of the study was to analyze the time structure of high-level kickboxing matches. A total of 45 combats ... -
Time-Optimal Control Of High-Speed Flexible-Robot Arm Using PD Algorithms
( Qatar University , 2000 , Article)This paper addresses utilization of proportional-plus derivative (PD) control algorithms for time-optimal control of flexible-robots. Flexibility is modeled using one mode of vibration with negligible structural damping. ... -
Time-resolved photocurrent spectroscopic diagnostics of electrically active defects in AlGaN/GaN High Electron Mobility Transistor (HEMT) structure grown on Si wafers
( American Scientific Publishers , 2016 , Article)Time-resolved photocurrent (TRPC) spectroscopy with a variable-wavelength sub-bandgap light excitation was used to study the dynamics of the decaying photocurrent generated in the heterostructures of the AlGaN/GaN high ... -
Time-resolved terahertz spectroscopy reveals the influence of charged sensitizing quantum dots on the electron dynamics in ZnO
( Royal Society of Chemistry , 2017 , Article)Photoinitiated charge carrier dynamics in ZnO nanoparticles sensitized by CdSe quantum dots is studied using transient absorption spectroscopy and time-resolved terahertz spectroscopy. The evolution of the transient spectra ... -
Time-series forecasting of Bitcoin prices using high-dimensional features: a machine learning approach
( Springer , 2020 , Article)© 2020, Springer-Verlag London Ltd., part of Springer Nature. Bitcoin is a decentralized cryptocurrency, which is a type of digital asset that provides the basis for peer-to-peer financial transactions based on blockchain ... -
A time-varying copula approach for modelling dependency: New evidence from commodity and stock markets
( Elsevier , 2016 , Article)This paper examines the time-varying conditional dependency between commodity markets and stock markets by applying the rolling-sample technique on the dependence parameter of copula. The dataset consists of the closing ... -
Time-varying efficiency of developed and emerging bond markets: Evidence from long-spans of historical data
( Elsevier B.V. , 2018 , Article)Bonds have become an important part of investment portfolios for individuals as well as for institutions, particularly after the recent financial crisis. This paper empirically investigates the Adaptive Market Hypothesis ... -
Timetabling hub-and-spoke parcel distribution inter-facility network
( Inderscience Publishers Ltd , 2013 , Article)This paper introduces an important problem encountered when designing hub-and-spoke parcel distribution network. This problem, which comes after generating the network design and before implementing it, is concerned with ... -
A time–frequency based approach for generalized phase synchrony assessment in nonstationary multivariate signals
( Elsevier , 2013 , Article)This paper proposes a new approach to estimate the phase synchrony among nonstationary multivariate signals using the linear relationships between their instantaneous frequency (IF) laws. For cases where nonstationary ...
