نتایج جستجو برای: given tec time series

تعداد نتایج: 2577805  

پایان نامه :دانشگاه تربیت معلم - تهران - دانشکده علوم ریاضی و مهندسی کامپیوتر 1389

چکیده ندارد.

Journal: :Remote Sensing 2022

Ionospheric forecasts are critical for space-weather anomaly detection. Forecasting ionospheric total electron content (TEC) from the global navigation satellite system (GNSS) is of great significance to near-earth space environment monitoring. In this study, we propose a novel TEC forecasting model based on deep learning, which consists convolutional neural network (CNN), long-short term memor...

Journal: :Radio Science 2023

Satellites in Low Earth Orbit (LEO) are essential for sounding the topside ionosphere. In this work, we present and validate a data set of Total Electron Content (TEC) situ electron density observations from Gravity Recovery And Climate Experiment (GRACE) GRACE-Follow-On missionsas well as TEC CHAllenging Minisatellite Payload (CHAMP) mission. Concerning TEC, special emphasis is put to ensure o...

2017
Fei Wang Wei Zhang Chao Wang Xu Fang Hao Cheng Sheng Liu Xu-Lin Chen

Tec kinase, a prototypical member of the Tec tyrosine kinases family, was shown to mainly govern lymphocyte proliferation. In the present study, we investigated the role of Tec kinase in acute inflammatory response in lipopolysaccharide (LPS) challenge. First, we demonstrate that Tec kinase activity was observed in RAW264.7 macrophages exposed to LPS. Tec and phosphorylated Tec expression were ...

2007
T. Maruyama

A regional reference model of total electron content (TEC) was constructed using data from the GPS Earth Observation Network (GEONET), which consists of more than 1000 Global Positioning System (GPS) satellite receivers distributed over Japan. The data covered almost one solar activity period from April 1997 to June 2007. First, TECs were determined for 32 grid points, expanding from 27 to 45 N...

Journal: :Haematologica 2003
Maria T Scupoli Fabrizio Vinante Mauro Krampera Carlo Vincenzi Gianpaolo Nadali Francesca Zampieri Mary A Ritter Efrem Eren Francesco Santini Giovanni Pizzolo

BACKGROUND AND OBJECTIVES T-cell lymphoblastic leukemia (T-ALL) cells originate within the thymus from the clonal expansion of T cell precursors. Among thymic stromal elements, epithelial cells (TEC) are known to exert a dominant inductive role in survival and maturation of normal, immature T-cells. In this study we explored the possible effect of TEC on T-ALL cell survival and analyzed the rol...

2013
Jyh-Woei Lin

Two-dimensional principal component analysis (2DPCA) and principal component analysis (PCA) are used to examine the ionospheric total electron content (TEC) data during the time period from 00:00 on August 21 to 12: 45 on August 31 (UT), which are 10 days before the M = 7.6 Philippines earthquake at 12:47:34 on August 31, 2012 (UT) with the depth at 34.9 km. From the results by using 2DPCA, a T...

Journal: :Blood 1979
H M Koenig A L Lightsey D P Nelson L K Diamond

Serum and IgG from four children with transient erythroblastopenia of childhood (TEC) was tested to see what effect it would have on development of erythroid colonies from bone marrow mononuclear cells. Serum and IgG specimens obtained at the time of diagnosis uniformly suppressed erythroid colony development from CFU-E. Washed bone marrow mononuclear cells from a child with TEC failed to grow ...

Journal: :journal of occupational health and epidemiology 0
m moradinazar of epidemiology, shiraz university of medical sciences f najafi department of epidemiology, school of medical sciences kermanshah, iran j hassanzadeh of epidemiology, shiraz university of medical sciences

background: this study attempted to investigate traffic accident fatalities during 2004-2009 and the effect of fuel rationing on traffic accident fatalities .   materials and methods: this was a cross-sectional study on available data of all traffic accident fatalities in fars province, iran, during 2004-2009. to identify and fit the best model, various instruments, including the autocorrelatio...

Journal: :iranian journal of public health 0
masoud mehrpour 1. dept. of neurology, iran university of medical sciences , tehran, iran. narges sadat shams-hosseini 2. dept. of occupational and environmental medicine, center research of occupational disease; firoozgar clinical research developmental center, tehran university of medical sciences , tehran, iran. saeed rezaali 3. sina ms research center, sina hospital, islamic azad university, tehran medical branch , tehran, iran. mohammad ali sahraiian 4. dept. of neurology, sina hospital, tehran university of medical sciences , tehran, iran. sara taki 5. firoozgar clinical research developmental center, iran university of medical sciences , tehran, iran.

multiple sclerosis (ms) is one of the autoimmune diseases with an unknown cause. the aim of this study was to explore the link between air quality and ms relapses in patients who suffer from ms.this time-series study was conducted on patients registered at the iranian multiple sclerosis society in 2011-2012. they were randomly selected from patients lived in tehran in the last five years, and h...

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