DD3 R10. Add a GEMINI element equivalent to ISO 19115 MD_Identification.resourceSpecificUsage

[PeterParslow]

This enables the data publisher (metadata creator/editor) to add other uses which have successfully been made of the data. ISO 19115 allows many of these, which “provides basic information about specific application(s) for which the resource(s) has/have been or is being used by different users”. It is an association to a class MD_Usage which officially requires a “brief description” and one or more contacts for the users. Where this second part is not appropriate, then perhaps GEMINI ”Resource specific usage” could be encoded as resourceSpecificUsage.MD_Usage.specificUsage with userContactInfo explicitly missing (xsi:nil)?

Name:
Definition	basic description of specific application(s) for which the resource(s) has/have been or is being used by different users
Purpose and meaning	An other purpose for which it has been used, beyond the original purposes for which resource was developed.
Obligation	Optional
Occurrence	Multiple
Data type	Character string
Domain	Free text
Guidance	To make it clearer to users what uses other than the original purpose the data has been used for. Give a simple description. If possible provide a link to the actual example of use.
Comment
Examples	Conservation planning Dive planning Assessing suitability for housing development

Corresponding element in other standards

Standard	Name	Comparison
ISO 19115:2003	MD_Identification.resourceSpecificUsage->MD_Usage.specificUsage	Identical
ISO 19139:2007	/gmd:MD_Metadata/gmd:identificationInfo/gmd:MD_DataIdentification/gmd:resourceSpecificUsage/gmd:MD_Usage/dmg:specificUsage	Identical
Schema.org	If the resource was used for education: educationalPurpose	The GEMINI element is more general

Encoding guidelines

Guidelines: No need to provide user contact information If the use case occurs in an accessible register, use gmx:Anchor

Example: 

<gmd:MD\_Metadata> 
  ... 
  <gmd:identificationInfo> 
    <gmd:MD\_DataIdentification> 
      ... 
      <gmd:resourceSpecificUsage>
        <gmd:MD\_Usage>
           <gmd:specificUsage>
             <gco:CharacterString>Conservation planning</gco:CharacterString> 
           </gmd:specificUsage>
           <gmd:userContactInfo xsi:nil=’true’/>
        </gmd:MD\_Usage>
      </gmd: resourceSpecificUsage >
      ... 
    </gmd:MD\_DataIdentification> 
  </gmd:identificationInfo> 
  ... 
</gmd:MD\_Metadata>```
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