Zobrazeno 1 - 10
of 72
pro vyhledávání: '"L.-A. McKinnell"'
Autor:
J. B. Habarulema, L.-A. McKinnell
Publikováno v:
Annales Geophysicae, Vol 30, Pp 857-866 (2012)
In this work, results obtained by investigating the application of different neural network backpropagation training algorithms are presented. This was done to assess the performance accuracy of each training algorithm in total electron content (T
Externí odkaz:
https://doaj.org/article/5bc814da8f924efab69eaea3fb291da9
Publikováno v:
Annales Geophysicae, Vol 27, Pp 2111-2125 (2009)
This paper attempts to describe the search for the parameter(s) to represent solar wind effects in Global Positioning System total electron content (GPS TEC) modelling using the technique of neural networks (NNs). A study is carried out by includi
Externí odkaz:
https://doaj.org/article/9a1a5a934d0b41b39626938dd78940a0
Publikováno v:
Annales Geophysicae, Vol 30, Pp 963-972 (2012)
Estimating the geoeffectiveness of solar events is of significant importance for space weather modelling and prediction. This paper describes the development of a neural network-based model for estimating the probability occurrence of geomagnetic
Externí odkaz:
https://doaj.org/article/1de2b89271c2447dbb40992eec691e9c
Autor:
Robert T. Wicks, Enrico Biffis, R. D. Bentley, Catherine Burnett, Jonathan Eastwood, L. A. McKinnell, Mike Hapgood, Lucie M. Green, Mario M. Bisi, Mark Gibbs
Publikováno v:
Risk Analysis. 37:206-218
Space weather describes the way in which the Sun, and conditions in space more generally, impact human activity and technology both in space and on the ground. It is now well understood that space weather represents a significant threat to infrastruc
Autor:
J P, Eastwood, E, Biffis, M A, Hapgood, L, Green, M M, Bisi, R D, Bentley, R, Wicks, L-A, McKinnell, M, Gibbs, C, Burnett
Publikováno v:
Risk analysis : an official publication of the Society for Risk Analysis. 37(2)
Space weather describes the way in which the Sun, and conditions in space more generally, impact human activity and technology both in space and on the ground. It is now well understood that space weather represents a significant threat to infrastruc
Autor:
P. Sibanda, L. A. McKinnell
Publikováno v:
Annales Geophysicae, Vol 29, Pp 229-236 (2011)
Successful empirical modeling of the topside ionosphere relies on the availability of good quality measured data. The Alouette, ISIS and Intercosmos-19 satellite missions provided large amounts of topside sounder data, but with limited coverage of re
Publikováno v:
Annales Geophysicae, Vol 28, Pp 1431-1439 (2010)
The development of a map of the ionosphere over South Africa is presented in this paper. The International Reference Ionosphere (IRI) model, South African Bottomside Ionospheric Model (SABIM), and measurements from ionosondes in the South African Ion
Publikováno v:
Annales Geophysicae, Vol 27, Iss 6, Pp 2449-2456 (2009)
Measurements of the ionospheric E-region during total solar eclipses have been used to provide information about the evolution of the solar magnetic field and EUV and X-ray emissions from the solar corona and chromosphere. By measuring levels of ioni
Publikováno v:
2011 XXXth URSI General Assembly and Scientific Symposium.
The prolonged solar activity minimum in 2007–2009 gives possibility to explore ionospheric behaviour under long-lasting low solar ultraviolet (EUV) irradiance conditions. This paper presents results of the analysis of the ionospheric F2 layer criti
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