Abstract: A method is provided for monitoring a state of an optical link in a Fiber Channel infrastructure and includes sending an Extended Link Service (ELS) request to read an optical power of the optical link, and diagnosing a degradation of the optical link, based on a response to the ELS request.

Abstract: A method and system are provided for compressing structured documents. The method includes the steps of (a) receiving semantic information for a given class of documents; (b) receiving a document of the given class to be compressed; (c) decomposing the document into a plurality of strings; (d) identifying document specific strings from the plurality of strings based on the semantic information, and writing the document specific strings to output; (e) determining whether other strings of the plurality of strings of the document are referenced by a key in a shared database; (f) when a string of the other strings is referenced by a key in the shared database, writing the key to output in place of the string; and (g) when a string of the other strings is not referenced by a key in the shared database, adding the string to the shared database with an associated key, and writing the associated key to output in place of the string.

Abstract: A peak cap (1) having a crown (2) with an inner elastically stretchable band (13) positioned to extend at least partway along a lower encircling edge (10) and a liner of stretchable fabric (12) secured to be on an inner side of the elastic material of the band (13). Also described is a band with the liner in the form of a sleeve (23) through which an elastic member (24) extends and where the liner but not the elastic material is secured to the lower edge of the crown (2).