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Mostrando ítems 1-10 de 22
Artículo
A method for foF2 short-term prediction
(Elsevier, 2000)
A method for foF2 short-term prediction with 1–24 hour lead times is proposed. It is based on ΔfoF2 (deviation of hourly foF2 from running median) regression with the previous ΔfoF2 observations and hourly spline-interpolated ...
Artículo
Effects of geomagnetic storms on the ionospheric regions over the Southwest of Europe. An approach to the influence of the G condition on ionospheric values
(Akadémiai Kiadó, 2002)
The effects of three geomagnetic storms on the ionospheric F region and the influence of the G condition on TEC estimates have been analysed by using ionospheric data from INTA El Arenosillo Atmospheric Sounding Station ...
Artículo
The 11.08.1999 solar eclipse and the ionosphere: a search for the distant bow-wave
(Elsevier, 2001)
The advantage of studying eclipse disturbances is the perfect predictability of their 4D source geometry, which allows for preparation of adapted systems and schedules. The total solar eclipse period of August 11, 1999 ...
Artículo
Day-to-day changes in experimental electron density profiles and their implications to IRI model
(Elsevier, 2004)
The electron density variability at fixed heights is studied for use in the International Reference Ionosphere IRI model. Monthly median, upper and lower quartile values were obtained for foF2, hmF2, B0 and B1 as deduced ...
Artículo
Towards a data collection methodology for Responsible Artificial Intelligence in health: A prospective and qualitative study in pregnancy
(Elsevier, 2022-07)
A medical field that is increasingly benefiting from Artificial Intelligence applications is Gyne- cology and Obstetrics. In previous work, we exposed that Artificial Intelligence (AI) technology and obstetric control by ...
Artículo
Daytime Electron Density At the F1-Region in Europe During Geomagnetic Storms
(European Geosciences Union, 2002)
This study attempts to demonstrate changes in the ionospheric F1-region daytime ionization during geomagnetic storms. The F1-region is explored using available data from several European middle latitude and lower latitude ...
Artículo
Behavior of the scale height at the F2 layer peak derived from Digisonde measurements at two European stations
(Elsevier, 2007)
A new technique is presented to estimate the electron density topside profile from information derived from ground-based ionograms. The electron density above the F2 peak is approximated by an a-Chapman function with ...
Artículo
Validation of a method for ionospheric electron density reconstruction by means of vertical incidence data during quiet and storm periods
(Istituto Nazionale di Geofisica e Vulcanologia (INGV), 2005)
A preliminary validation of the technique developed using the NeQuick ionospheric model and the «effective ionization parameter» Az, based on vertical total electron content data ingestion, was carried out in a previous ...
Artículo
Predicted and measured bottomside F-region electron density and variability of the D1 parameter under quiet and disturbed conditions over Europe
(Elsevier, 2004)
Modelling and forecasting of ionospheric parameters is very useful for different radio communication purposes. As long as variations in the ionosphere form regular patterns, the empirical International Reference Ionosphere ...
Artículo
Artificial lntelligence in Pregnancy: A Scoping Review
(Institute of Electrical and Electronics Engineers, 2020-10)
Artificial Intelligence has been widely applied to a majority of research areas, including health and medicine. Certain complications or disorders that can appear during pregnancy can endanger the life of both mother and ...