Results 81 to 90 of about 1,876,985 (311)

Lorentzian Iterative Hard Thresholding: Robust Compressed Sensing with Prior Information

open access: yes, 2013
Commonly employed reconstruction algorithms in compressed sensing (CS) use the $L_2$ norm as the metric for the residual error. However, it is well-known that least squares (LS) based estimators are highly sensitive to outliers present in the measurement
Barner, Kenneth E., Carrillo, Rafael E.
core   +1 more source

Infant frontal alpha asymmetry predicts social attention and transdiagnostic risk for emotional reactivity

open access: yesJCPP Advances, EarlyView.
Abstract Background Differences in Frontal Alpha Asymmetry (FAA), derived from the electroencephalogram (EEG), have been associated with approach‐withdrawal behavior, although inconsistently. The current study examined how early patterns of FAA during the first 2 years of life relate to various socioemotional characteristics (at 2 years) and ultimately
Viviane Valdes   +3 more
wiley   +1 more source

Analysis of the Impact of Impulsive Noise Parameters on BER Performance of OFDM Power-Line Communications

open access: yes, 2014
It is well known that asynchronous impulsive noise is the main source of distortion that drastically affects the power-line communications (PLC) performance.
CORLAY, Patrick   +4 more
core  

Co‐development of a digital animated video on attention deficit hyperactivity disorder with children and parents/carers

open access: yesJCPP Advances, EarlyView.
Abstract Background When receiving an attention deficit hyperactivity disorder (ADHD) diagnosis, children and families/carers need clear and accurate information about the condition in a suitable format. However, many of the available resources are complex or provide content that is not evidence‐based.
Sharifah Shameem Agha   +6 more
wiley   +1 more source

Analytical bit error rate performance evaluation of an orthogonal frequency division multiplexing power line communication system impaired by impulsive and Gaussian channel noise

open access: yesThe Journal of Engineering, 2015
An analytical approach is presented to evaluate the bit error rate (BER) performance of a power line (PL) communication system considering the combined influence of impulsive noise and background PL Gaussian noise.
Munshi Mahbubur Rahman   +1 more
doaj   +1 more source

Comparison of measured and calculated helicopter rotor impulsive noise [PDF]

open access: yes
The thickness noise theory is discussed. Two full-scale rotors were tested in a wind tunnel with several tips involving changes in chord, thickness, and sweep. Impulsive noise data reduction procedures used are described.
Johnson, W., Lee, A.
core   +1 more source

Aeroacoustics of a coaxial rotor in level flight [PDF]

open access: yes, 2008
The aeroacoustic characteristics of a coaxial system with teetering rotors in level forward °ight are com- pared to those of an equivalent articulated single rotor with the same solidity.
Brown, R.E., Duraisamy, K., Kim, H.W.
core   +1 more source

Irritability in preschool children with attention‐deficit/hyperactivity disorder: Analysis of family environmental factors

open access: yesJCPP Advances, EarlyView.
Abstract Background Irritability affects one‐third of children and adolescents with attention‐deficit/hyperactivity disorder (ADHD) and is associated with negative outcomes. The family environment plays a prominent role in the child's development, and therefore on the risk for irritability, especially during the preschool period.
Analin Ono Baraniuk   +7 more
wiley   +1 more source

Distribution based definition of impulse noise [PDF]

open access: yesThe Journal of the Acoustical Society of America, 1985
Existing definitions of impulse noise are based on estimates of either the decay of the noise envelope, the repetition rate of the peaks, or a comparison of single peak level to rms level. Because each of these measures fails to fully characterize at least one of the relevant characteristics of an impulse, many exceptions to these classifications can ...
openaire   +2 more sources

Aeroacoustic research programs at the Army Aviation Research and Technology Activity [PDF]

open access: yes
The Army rotorcraft aeroacoustic programs are reviewed, highlighting the theoretical and experimental progress made by Army researchers in the physical understanding of helicopter impulsive noise.
Morse, H. Andrew   +2 more
core   +1 more source

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