Results 21 to 30 of about 428,774 (260)

Health‐Related Social Needs in Children With Sickle Cell Disease Are Associated With Worse Health‐Related Quality of Life

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Children with sickle cell disease (SCD) face multiple acute and chronic medical complications that may impact their quality of life as reported by patients themselves. Health‐related social needs (HRSNs), such as food and housing insecurity, are common in people with SCD, but the association between HRSNs and patient‐reported ...
Sarah J. Marks   +5 more
wiley   +1 more source

Rényi Entropy-Based Shrinkage with RANSAC Refinement for Sparse Time-Frequency Distribution Reconstruction

open access: yesMathematics
Compressive sensing in the ambiguity domain facilitates high-performance reconstruction of time-frequency distributions (TFDs) for non-stationary signals. However, identifying the optimal regularization parameter in the absence of prior knowledge remains
Vedran Jurdana
doaj   +1 more source

The Combined Effect of Obesity and Contraceptive Use on Pulmonary Embolism in Adolescent Females Residing in the United States

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Combined oral contraceptive (COC) use in obese adult women dramatically increases the relative risk of developing a pulmonary embolism (PE). The risk of a PE in obese adolescent females taking contraceptives is currently unknown. The purpose of this investigation was to determine the effect of body mass index (BMI) and contraceptive
John Puetz, Joanne Salas
wiley   +1 more source

Efficient software platform TFSAP 7.1 and Matlab package to compute Time–Frequency Distributions and related Time-Scale methods with extraction of signal characteristics

open access: yesSoftwareX, 2018
This article describes the source code used in the TFSAP toolbox (Boashash, 2016). It is extended with additional functions to allow reproducible research as presented in Boashash and Ouelha (in press).
Boualem Boashash, Samir Ouelha
doaj   +1 more source

Estimation of Time-Varying Coherence and Its Application in Understanding Brain Functional Connectivity

open access: yesEURASIP Journal on Advances in Signal Processing, 2010
Time-varying coherence is a powerful tool for revealing functional dynamics between different regions in the brain. In this paper, we address ways of estimating evolutionary spectrum and coherence using the general Cohen's class distributions.
Gaetz William, Liu Cheng, Zhu Hongmei
doaj   +2 more sources

Separating More Sources Than Sensors Using Time-Frequency Distributions

open access: yesEURASIP Journal on Advances in Signal Processing, 2005
We examine the problem of blind separation of nonstationary sources in the underdetermined case, where there are more sources than sensors. Since time-frequency (TF) signal processing provides effective tools for dealing with nonstationary signals, we ...
Belouchrani Adel   +3 more
doaj   +1 more source

EEG-Based Emotion Recognition Using Quadratic Time-Frequency Distribution

open access: yesSensors, 2018
Accurate recognition and understating of human emotions is an essential skill that can improve the collaboration between humans and machines. In this vein, electroencephalogram (EEG)-based emotion recognition is considered an active research field with ...
Rami Alazrai   +3 more
doaj   +1 more source

Feasibility and Safety of Somato‐Cognitive Coordination Therapy for Cerebellar Ataxia Following Pediatric Brain Tumor Treatment

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Cerebellar ataxia after pediatric brain tumor treatment can cause persistent gait, balance, and speech impairment, yet no established rehabilitation strategy exists. Somato‐cognitive coordination therapy (SCCT) is a virtual reality–guided intervention designed to promote sensorimotor integration through visually constrained reaching
Masanobu Takeuchi   +10 more
wiley   +1 more source

Techniques to Obtain Good Resolution and Concentrated Time-Frequency Distributions: A Review

open access: yesEURASIP Journal on Advances in Signal Processing, 2009
We present a review of the diversity of concepts and motivations for improving the concentration and resolution of time-frequency distributions (TFDs) along the individual components of the multi-component signals.
Imran Shafi   +3 more
doaj   +1 more source

Fractional time-frequency distributions [PDF]

open access: yesProceedings of 1997 IEEE International Symposium on Circuits and Systems. Circuits and Systems in the Information Age ISCAS '97, 2002
Several quadratic signal representation methods have been successfully used in signal processing. Four quadratic signal representations, Wigner distribution, ambiguity function, signal correlation function and spectral correlation function are the traditional ones.
Pei, Soo-Chang, Yeh, Min-Hung
openaire   +2 more sources

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