A NEW CODE FOR NONLINEAR FORCE-FREE FIELD EXTRAPOLATION OF THE GLOBAL CORONA

the relationship between field-related cognitive styles and global reading comprehension of hypertext

this study investigates the relationship between field-related cognitive styles and global reading comprehension of hypertext. technically, field dependency is prevailing dominance of field on perception of parts, while global comprehension is skim-like reading to grasp the general content. in this research project, 60 senior and junior students of arak university majoring in english literature...

A regularization method for the extrapolation of the photospheric solar magnetic field I. Linear force-free field

We present a method for reconstructing the magnetic field B above the photosphere {z = 0} as the solution of the boundary value problem (BVP) for a bounded regular forcefree magnetic field in Ω = {z > 0} from its boundary values supposed to be given on {z = 0}. We propose a way for regularizing the class of standard extrapolation methods which turns out to diverge quickly with height, because o...

Reconstruction of Solar Coronal Linear Force-Free Magnetic Field

First nonlinear force-free field extrapolations of SOLIS/VSM data

Aims. We study the coronal magnetic field structure inside active regions and its temporal evolution. We attempt to compare the magnetic configuration of an active region in a very quiet period with that for the same region during a flare. Methods. Probably for the first time, we use vector magnetograph data from the Synoptic Optical Long-term Investigations of the Sun survey (SOLIS) to model t...

investigating the feasibility of a proposed model for geometric design of deployable arch structures

deployable scissor type structures are composed of the so-called scissor-like elements (sles), which are connected to each other at an intermediate point through a pivotal connection and allow them to be folded into a compact bundle for storage or transport. several sles are connected to each other in order to form units with regular polygonal plan views. the sides and radii of the polygons are...