Results 111 to 120 of about 1,433,403 (294)

MIXED EXPONENTIAL POWER ASYMMETRIC CONDITIONAL HETEROSKEDASTICITY [PDF]

open access: yes
To match the stylized facts of high frequency financial time series precisely and parsimoniously, this paper presents a finite mixture of conditional exponential power distributions where each component exhibits asymmetric conditional heteroskedasticity.
Jeroen V.K. Rombouts, Mohammed Bouaddi
core   +3 more sources

Epilepsy Classification Framework Utilizing Joint Time-Frequency Signal Analysis and Processing

open access: yesApplied Medical Informatics, 2015
Time Frequency Signal Analysis and Processing (TFSAP) have been proposed in order to analyse the signal in both the time and the frequency domains. Electroencephalography (EEG) as a time-varying frequency signal is an interesting field in which Time ...
Shiva KHOSHNOUD, Mousa SHAMSI
doaj  

How Does the Unique Space‐Time Sampling of the SWOT Mission Influence River Discharge Series Characteristics?

open access: yesGeophysical Research Letters, 2019
The Surface Water and Ocean Topography (SWOT) satellite mission will, for the first time, provide simultaneous, high‐resolution measurements of water surface elevation and extent.
Cassandra Nickles   +5 more
doaj   +1 more source

Skylab contamination results: S052 particle analysis and T025 analysis [PDF]

open access: yes
The size and velocity distributions of 500 contaminant particles in the near environs of Skylab were determined from video tape data obtained by the high altitude observatory's white light coronagraph.
Schuerman, D. W.
core   +1 more source

Infrared laser sampling of low volumes combined with shotgun lipidomics reveals lipid markers in palatine tonsil carcinoma

open access: yesMolecular Oncology, EarlyView.
Nanosecond infrared laser (NIRL) low‐volume sampling combined with shotgun lipidomics uncovers distinct lipidome alterations in oropharyngeal squamous cell carcinoma (OPSCC) of the palatine tonsil. Several lipid species consistently differentiate tumor from healthy tissue, highlighting their potential as diagnostic markers.
Leonard Kerkhoff   +11 more
wiley   +1 more source

THE COMPUTER-AIDED CONTROLLING OF TECHNICAL AND TECHNOLOGICAL PLANTS IN THE WAVELET MEDIUM [PDF]

open access: yesТехника и технология пищевых производств, 2015
Methods of formalizing material flows created in certain knots of structure-and-functional diagram of the mixture producing aggregate are considered, that are founded on transforming one-dimensional initial flow signals into multi-dimensional ones.
Fedosenkov D.B.   +4 more
doaj  

Application of Choi—Williams Reduced Interference Time Frequency Distribution to Machinery Diagnostics

open access: yesShock and Vibration, 1995
This article discusses time frequency analysis of machinery diagnostic vibration signals. The short time Fourier transform, the Wigner, and the Choi–Williams distributions are explained and illustrated with test cases.
Howard A. Gaberson
doaj   +1 more source

Recurrent cancer‐associated ERBB4 mutations are transforming and confer resistance to targeted therapies

open access: yesMolecular Oncology, EarlyView.
We show that the majority of the 18 analyzed recurrent cancer‐associated ERBB4 mutations are transforming. The most potent mutations are activating, co‐operate with other ERBB receptors, and are sensitive to pan‐ERBB inhibitors. Activating ERBB4 mutations also promote therapy resistance in EGFR‐mutant lung cancer.
Veera K. Ojala   +15 more
wiley   +1 more source

Time-Frequency Analysis and Its Application in Digital Watermarking

open access: yesEURASIP Journal on Advances in Signal Processing, 2010
A review of time-frequency analysis and some aspects of its applications in digital watermarking are presented. The main advantages and drawbacks of various time-frequency distributions are first discussed.
Srdjan Stanković
doaj   +1 more source

Peroxidasin enables melanoma immune escape by inhibiting natural killer cell cytotoxicity

open access: yesMolecular Oncology, EarlyView.
Peroxidasin (PXDN) is secreted by melanoma cells and binds the NK cell receptor NKG2D, thereby suppressing NK cell activation and cytotoxicity. PXDN depletion restores NKG2D signaling and enables effective NK cell–mediated melanoma killing. These findings identify PXDN as a previously unrecognized immune evasion factor and a potential target to improve
Hsu‐Min Sung   +17 more
wiley   +1 more source

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