نتایج جستجو برای: synchrosqueezing transform sst

تعداد نتایج: 123375  

2002
A. P. TRISHCHENKO

Abstract. We analysed the operational infrared (IR) calibration of the AVHRR radiometers onboard NOAA-12, 14 and 15 satellites. It was shown that solar blackbody contamination aVects the calibration of all IR channels. This source of error in the calibration may result in uncertainties in the estimation of sea surface temperature (SST) up to 0.5K or more. We propose an approach to correct this ...

Journal: :Applied sciences 2022

Focal and non-focal Electroencephalogram (EEG) signals have proved to be effective techniques for identifying areas in the brain that are affected by epileptic seizures, known as epileptogenic zones. The detection of location focal EEG time seizure occurrence vital information help doctors treat seizures using a surgical method. This paper proposed computer-aided (CAD) system detecting classify...

Journal: :IEEE Transactions on Power Systems 2023

Location of non-stationary forced oscillation (FO) sources can be a challenging task, especially under resonance condition with natural system modes. In this case, the magnitudes oscillations could greater in places distant from source and spreads over large region power system. Detection, frequency identification filtering FO oscillatory components constitutes an initial critical step for appl...

2008
Jin Hai Yang Xiaomei Gong Jianming Gao Zhenyu

Mesoscale eddies have a significant impact on the exchange of material and energy in the ocean, and thus their knowledge are of great importance for the study of oceanic circulation. Images of sea surface temperature (SST) created from satellite infrared sensors are used to detect mesoscale eddies that have a surface signature in temperature. Various techniques, including texture analysis, wave...

Journal: :Buildings 2023

The structure is said to be damaged if there a permanent shift in the post-event natural frequency of as compared with pre-event frequency. To assess damage structure, time-frequency approach that can capture and required. In this study, determine these frequencies, local maximum synchrosqueezing transform (LMSST) method employed. Through simulation results, we have shown traditional methods su...

2017
O. Dharmapandit R. K. Patnaik P. K. Dash

This paper proposes a pattern recognition based differential spectral energy protection scheme for ac microgrids using a Fourier kernel based fast sparse time-frequency representation (SST or simply the sparse S-Transform). The average and differential current components are passed through a change detection filter, which senses the instant of fault inception and registers a change detection po...

Journal: :American journal of physiology. Renal physiology 2001
D A Balster M S O'Dorisio M A Summers M A Turman

Somatostatin is known to modulate mesangial and tubular cell function and growth, but the somatostatin receptor (sst) subtypes responsible for these effects have not been defined. There are at least five different sst receptor subtypes (sst(1)-sst(5)). We used RT-PCR to demonstrate that normal human kidney consistently expresses mRNA for sst(1) and sst(2) (9 of 9 donors). Some donors expressed ...

Journal: :Journal of leukocyte biology 2007
Chiara Armani Elisabetta Catalani Alberto Balbarini Paola Bagnoli Davide Cervia

Somatostatin (SRIF)-14 is recognized as an important mediator between the nervous and the immune system, although the functional role of its receptors (sst(1)-sst(5)) is poorly understood in humans. In our study, we demonstrate that human macrophages, differentiated from PBMC-derived monocytes, express sst(1) and sst(2) mRNAs. sst(1) and sst(2) are mostly localized at the cell surface and displ...

Journal: :Endocrine-related cancer 2003
W W de Herder L J Hofland A J van der Lely S W J Lamberts

Five somatostatin receptor (sst) subtype genes, sst(1), sst(2), sst(3), sst(4) and sst(5), have been cloned and characterised. The five sst subtypes all bind natural somatostatin-14 and somatostatin-28 with high affinity. Endocrine pancreatic and endocrine digestive tract tumours also express multiple sst subtypes, but sst(2) predominance is generally found. However, there is considerable varia...

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