Practical applications of networking standards for KOS

My apologies in advance for cross-posting.

For a presentation this spring, I am trying to collect information on 
practical, real world uses of standards for sharing and making use of 
networked knowledge organisation systems. Knowledge organisation systems 
(KOS) of course include classification schemes, subject heading lists, 
thesauri, ontologies and other controlled vocabularies. Uses might include 
migrating schemes from a management system to a retrieval application or 
another management application, translation of a thesaurus from one natural 
language to another,  translating searches from one indexing language to 
another (or from one natural language to another), and expanding or 
enriching queries.

If you are using a standard for presenting the content of classification 
schemes, thesauri or ontologies in a networked environment or a standard 
protocol for accessing that information, please send me some brief 
information or references to your application, and (ideally) a URL where 
this information will be available. If you are not using a standard, but 
are still doing any of the above, I would also be interested in hearing 
about your application. I will, of course, summarise responses for the list.

Thanks in advance.

Ron

Ron Davies
Av. Baden-Powell 1  Bte 2, 1200 Brussels, Belgium
Email:  ron(at)rondavies.be
Tel:    +32 (0)2 770 33 51
GSM:    +32 (0)484 502 393