Understanding large SEP events with the PATH code: Modeling of the 13 December 2006 SEP event

Variation of SEP event occurrence with heliospheric magnetic field magnitudes

Recent work based on nitrate abundances in polar ice cores has shown that large fluence solar energetic (E > 30 MeV) particle (LSEP) events during the spacecraft era of observations (1960-present) are diminished in comparison with those of some preceding eras detected in the ice cores dating back to 1561. McCracken et al. [McCracken, K.G.. Dreschhoff, G.A.M., Smart, D.F., Shea. M.A. A study of ...

Variation of SEP event occurrence with heliospheric magnetic field

Recent work based on nitrate abundances in polar ice cores has shown that large fluence solar energetic (E > 30 MeV) particle (LSEP) events during the spacecraft era of observations (1960-present) are diminished in comparison with those of some preceding eras detected in the ice cores dating back to 1561. McCracken et al. [McCracken, K.G.. Dreschhoff, G.A.M., Smart, D.F., Shea. M.A. A study of ...

Sep 2002

Based on the VMS survey of the compact array antenna CA02, the effects of gravity deformation were examined in AT 39.3/115. The dominant cause of gain loss and beam distortion was identified to be the deformation of the main reflector surface with elevation. This report examines whether active displacements in the sub-reflector and/or feed might compensate for the aperture wavefront errors. All...

Cryptography Sep 14 , 2006 Lecture 7 : Computational Number Theory III

However, in cryptography, we are more interested in trap-door functions, which are easy to compute and hard to invert unless given trap-door information. In this class, we will go deeper into computational number theory, in particular, the Chinese Remainder theorem, then look at operations in Z n, and finally introduce RSA and Rabin assumptions which shed lights to the design of trap-door funct...

TWAS Newsletter Vol. 13 No. 3 (Jul-Sep 2001)