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This paper describes object-oriented extensions to the Harvest information discovery and access system that allow users to deene type hierarchies and associated access methods for Web objects. These extensions enable Mosaic and the Web to represent, manipulate and display arbitrarily complex data in application-speciic ways. Types and access methods are(More)
A comparison of the size of polar coronal holes with the cosmic-ray intensity observed during the most recent sunspot cycle shows close correspondence. This lends support to recent suggestions that the well-known sunspot-cycle modulation of cosmic rays is a three-dimensional effect, probably related to the global character of the interplanetary magnetic(More)
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