Dublin Core 9/23/03

Changes 9/25/03 by Clay Templeton

Added missing definitions for date, date.modified, publisher, and type.
Modified definition of type.information to harmonize with added type
element. Typographical corrections to definitions of
creator.missionsProjects, contributor.missionProjects, and
coverage.projectPhase.

Future possibility #1: replacing definitions for elements that are taken
directly from Dublin Core with canonical DC definitions

Future possibility #2: adding simple DC elements to element groups that
don't already include them

Changes 9/23/03 by Clay Templeton

1)replaced "identifier" and "identifier.alternate" with
"identifier.persistent" and "identifier.url". Rationale: the name
"identifier.persistent" explicitly identifies this field as the proper
place for a persistent identifier. Additional "identifier" refinements
may be negotiated in the future. (definitions also changed)

2\) rights.resourceAvailability was deleted. Rationale: making the NLM
resourceAvailability element a refinement of DC:rights led to a rather
bizarre interpretation. There is agreement that resourceAvailability is
a useful element, but consensus has not been reached on which DC element
it should refine or whether perhaps it ought to stand as an extension.

3\) The format definition was changed to be more in line with DC
definitions; the word "medium" was replaced with the word "structure".

Note: At the second MRG meeting 9/22, it was agreed that a media element
is desirable. However, it is unclear what DC element this would extend
or if it would stand alone as an extension.

Changes 9/14/3 by Clay Templeton:

1\) eliminated format.medium element. Rationale: two format elements,
format and format.medium, were being used so that a physical format
could be indicated in the latter and the arrangement of information on
that physical format (e.g. mime type in the case of computer disks),
could be given in the former. It seems that since mime type occurs in
only a certain class of resources while all resources have some physical
format to speak of (even if that physical format is the vague
'internet') it makes more sense for the unqualified format element to
contain an indication of physical format. An area of future exploration
is whether this should be supplemented by a qualified format term and
what it ought to look like.

2\) Simplified definitions. Rationale: The old ones were unnecessarily
confusing and made a lot of assumptions that were not warranted by any
existing circumstance at Goddard. The new, simplified definitions are
easier to apply intuitively. Specifically, references to the FRBR rules
have been eliminated, as have assumptions about the use of persistent
identifiers and medium specific details.

3\) Began documenting changes

I. Descriptive Elements

title x

title.alternate

creator

creator.employee

creator.organization x NASA GSFC TISB

creator.code x 293

creator.contract

creator.missionsProjects

creator.instrument

contributor

contributor.employee x Patrick Healey

contributor.organization x NASA GSFC LISB

contributor.code x 292

contributor.contract

contributor.missionsProjects

contributor.instrument

subject

subject.employee x person presenting

subject.organization x org of person presenting

\*\*\*the following 5 -- fill em in if you can, according to NASA
taxonomy\*\*\*

subject.missionsProjects

subject.disciplines

subject.instrument

subject.functions

subject.industries

subject.uncontrolled

description x abstract type thing

date

date.created x recorded

date.available x posted

date.modified

publisher

publisher.organization x NASA GSFC Library

type x video or image?? (still waiting to hear from Gail on this)

type.information

type.contentInvariance

format x whatever you find out from Microsoft listserve

identifier.persistent

identifier.url x url of video for streaming

source x series

language x english

relation.hasVersion

coverage.spatial

coverage.chronology

coverage.projectPhase

rights x all rights reserved or something

audience

The **Title** element contains a name of the resource.

The **Title.alternate** element contains some other name of the
resource.

The **Creator** element contains the name of an entity that participated
in the creation of the resource.

The **Creator.employee** element contains the name of an employee that
participated in the creation of the resource.

The **Creator.code** element contains a Goddard organizational code
under which the work was created.

The **Creator.contract** element contains a value that identifies a
contract under which the work was created.

The **Creator.missionProject** element contains a value that identifies
a project under which the work was created.

The **Creator.organization** element contains a value that identifies an
organization under whose auspices the resources was created.

The **Creator.instrument** element contains a value that identifies an
instrument that created the resource.

The **Contributor** element contains the name of an entity that
contributed to the present state of the resource.

The **Contributor.employee** element contains the name of an employee
who contributed to the present state of the resource.

The **Contributor.code** element contains a Goddard organizational code
under which contributions were made to the present state of the
resource.

The **Contributor.contract** element contains a value that identifies a
contract under which contributions were made to the present state of the
resource.

The **Contributor.missionsProjects** element contains a value that
identifies a project under which contributions were made to the present
state of the resourse.

The **Contributor.organization** element contains a value that
identifies the organization under the auspices of which contributions
were made to the present state of the resource.

The **Contributor.instrument** element contains a value that identifies
a piece of equipment that contributed to the present state of the
resource.

The **Subject** element contains a designation of what the resource is
about.

The **Subject.employee** element contains the name of an employee whom
the resource is about.

The **Subject.organization** element contains the name of an
organization that the resource is about.

The **Subject.missionsProjects** element contains the name of a project
that the resource is about.

The **Subject.disciplines** element contains the name of a discipline
that the content of the expression is about.

The **Subject.instrument** element contains the name of an instrument
that the content of the expression is about.

The **Subject.functions** element contains the name of a business
function that the content of the expression is about.

The **Subject.industries** element contains the name of an industry that
the content of the expression is about.

The **Subject.uncontrolled** element contains a characterization of the
subject matter of the expression.

The **Description** element contains information useful in evaluating
the relevance of the expression to the user\'s need. This information
may include but is not limited to "abstracts, table of contents,
reference to a graphical representation of content or a free-text
account of the content".

The **Date** element contains a date that is relevant to the life of the
resource

The **Date.created** element contains the date on which the resource was
created.

The **Date.available** element contains the date on which the resource
became available.

The **Date.modified** element contains a date on which the resource was
modified

The **Publisher** element contains a the name of an entity responsible
for producing and/or distributing the resource.

The **Publisher.organization** element contains the name of an
organization responsible for producing and/or distributing the resource.

The **Type** element contains an indication of the nature or genre of
the resource.

The **Type.information** element contains additional information about
the nature or genre of the resource.

The **Type.contentInvariance** element is imported from the National
Library of Medicine's permanence ratings and is defined as "the extent
to which the content of a given resource and the links it contains will
remain unchanged".

The **Format** element gives information about the structure of the
resource.

The **Identifier.persistent** element contains a means of uniquely
identifying the resource in a

persistent identification system.

> The **Identifier.url** element contains a current url for the
> resource.
>
> The **Source** element contains the title of a broader resource within
> which the resource is found.

The **Language** element contains the name of the language used in the
resource.

Each **Relation.hasVersion** element contains a reference to other
versions of the resource

The **Coverage.projectPhase** element specifies a project phase to which
the content of the object is relevant.

The **Coverage.chronology** element specifies the period in which the
expression was generated.

The **Coverage.spatial** element specifies an area covered the resource

The **Rights** element contains a formal statement of copyright and
access controls that apply to the resource.

The **Audience** element contains a designator of a group by whom it is
expected that the resource to be used.

II. Administrative Elements

date.recordCreated

creator.recordCreator

contributor.rno

contributor.contentowner

contributor.webmaster

The **date.recordCreated** element contains the date that this metadata
record was created.

The **creator.recordCreator** element contains an indicator of an entity
that created this record.

The **Contributor.rno** -- this tag is intended for use with web pages,
and reflects the rno tag required by Goddard web policy as of May 2003.
It contains the name of the NASA official who is responsible for the
content of the object.

The **Contributor.contentOwner** -- this tag is intended for use with
web pages, and reflects the content-owner tag required by Goddard web
policy as of May 2003. It contains the name of the owner of the content
that is pointed to by record.

The **Contributor.webmaster -** this tag is intended for use with web
pages, and reflects the webmaster tag required by Goddard web policy as
of May 2003.