The National Information Standards Organization has released Institutional Identifiers in Repositories: A Survey Report for the NISO I2 Workgroup.
Here's an excerpt:
The survey showed that standardized institutional identifiers are seen as important and it was agreed there is a need for them in the repository community. The need for identifiers is underscored by the ways in which repository content is shared. A clear majority of repositories include identifiers for the repository itself and many include institutional identifiers. Those that include the latter generally also include identifiers for subordinate units within the identified institution. Most of these identifiers are not used in other usage contexts—e.g., Inter-Library Loan, electronic resource management systems, etc.—but there is some agreement that it would be important for a single identifier to be used for all organizational purposes. The majority of respondents would be willing to participate in a registry of institutional identifiers provided that participation is voluntary and cost-free.
Institutional identifiers already in usage are largely based upon the Uniform Resource Identifier (URI) standard, whether they take the form of Hypertext Transfer Protocol (HTTP) URIs, Uniform Resource Names (URNs), CNRI Handles, or OCLC PURLs. An overwhelming majority of respondents consider resolvability of institutional identifiers important.
