Do GJXDM and NIEM use acronyms or abbreviations?

GJXDM and NIEM follow the Federal XML Developer's Guidelines, ebXML, ISO/IEC Standard 11179, and best practices. Abbreviations and acronyms are highly discouraged within data element names, except when commonly understood, rarely confused, widely accepted, agreed upon, and documented. Authorized abbreviations are listed and defined in the glossary of the documentation.

Federal XML Developer's Guide:  http://xml.fido.gov/documents/in_progress/developersguide.pdf