<subject>
Subject Grouping Name
Name of one subject or topic used to describe an article. Such topics and groupings of topics are typically used to provide headings for groups of documents or document components in a printed, or online, generated Table of Contents.
Remarks
For some journals, articles are grouped into categories which this Tag Set calls <subject>s, which may be grouped into <subj-group>s. These subject categories are typically shown in the Table of Contents, at the top of the first print or display page, or on the web splash page for an article. Sometimes the grouping or category refers to the type of article, such as “Essay”, “Commentary”, “Obituary”, “Award”, or “Article”. Sometimes the grouping refers to subject areas, such as “Physical Sciences”, “Biological Sciences”, or “Social Sciences”. Sometimes the grouping refers to topics within the larger subject areas, such as “Applied Math”, “Biology”, or “Chemistry”. For example, a one-level grouping might be:
<subj-group> <subject>Retraction</subject> </subj-group>
or, as another example:
<subj-group> <subject>Essay</subject> </subj-group>
And a four-level grouping might be:
<article-categories>
<subj-group subj-group-type="keywords">
<subject>Biological Sciences</subject>
<subj-group subj-group-type="keywords">
<subject>Neuroscience</subject>
<subj-group subj-group-type="keywords">
<subject>Cellular and Molecular Biology</subject>
<subj-group subj-group-type="keywords">
<subject>Blood–brain barrier</subject>
</subj-group>
</subj-group>
</subj-group>
</subj-group>
</article-categories>
Articles may also be assigned to more than one grouping. For example, if an article is classified as “Biochemistry” under “Biological Sciences” and “Chemistry” under “Physical Sciences”, the <subj-group> container element may repeat. For example:
<subj-group>
<subject>Articles</subject>
<subj-group>
<subject>Biological Sciences</subject>
<subj-group>
<subject>Biochemistry</subject>
</subj-group>
</subj-group>
<subj-group>
<subject>Physical Sciences</subject>
<subj-group>
<subject>Chemistry</subject>
</subj-group>
</subj-group>
</subj-group>
Content Model
<!ELEMENT subject (#PCDATA %subject-elements;)* >
Expanded Content Model
(#PCDATA | email | ext-link | uri | inline-supplementary-material | related-article | related-object | hr | bold | fixed-case | italic | monospace | overline | overline-start | overline-end | roman | sans-serif | sc | strike | underline | underline-start | underline-end | ruby | alternatives | inline-graphic | private-char | chem-struct | inline-formula | tex-math | mml:math | abbrev | milestone-end | milestone-start | named-content | styled-content | fn | target | xref | sub | sup | x | break)*
Description
Any combination of:
- Text, numbers, or special characters
- Linking Elements
- <inline-supplementary-material> Inline Supplementary Material Metadata
- Related Material Elements
- <hr> Horizontal Rule
- Emphasis Elements
- <bold> Bold
- <fixed-case> Fixed Case
- <italic> Italic
- <monospace> Monospace Text (Typewriter Text)
- <overline> Overline
- <overline-start> Overline Start
- <overline-end> Overline End
- <roman> Roman
- <sans-serif> Sans Serif
- <sc> Small Caps
- <strike> Strike Through
- <underline> Underline
- <underline-start> Underline Start
- <underline-end> Underline End
- <ruby> Ruby Annotation Wrapper
- <alternatives> Alternatives For Processing
- Inline Display Elements
- <chem-struct> Chemical Structure (Display)
- <inline-formula> Formula, Inline
- Math Elements
- Other Inline Elements
- <fn> Footnote
- <target> Target of an Internal Link
- <xref> X (cross) Reference
- Baseline Change Elements
- <x> X - Generated Text and Punctuation
- <break> Line Break
This element may be contained in:
Example 1
Article categories that are similar to keywords:
... <article-categories> <subj-group> <subject>ISO/TC 43</subject> <subj-group> <subject>SC 1, Noise</subject> </subj-group> </subj-group> </article-categories> ...
...
<article-categories>
<subj-group subj-group-type="kwd">
<subject content-type="neurosci">Cellular and Molecular
Biology</subject>
<subj-group>
<subject content-type="neurosci">Blood–brain
barrier</subject>
</subj-group>
</subj-group>
</article-categories>
... Example 2
Categories for Table of Contents grouping:
... <article-categories> <subj-group subj-group-type="toc-heading"> <subject>ARTICLES</subject> <subj-group> <subject>Structural, Mechanical, Thermodynamic, and Optical Properties of Condensed Matter</subject> </subj-group> </subj-group> </article-categories> ...
Example 3
A single article may belong to many subject groups:
... <article-categories> <subj-group> <subject>Departments</subject> <subj-group> <subject>Federal Court Decisions</subject> <subj-group> <subject>Supreme Court Opinions</subject> <subj-group> <subject>Criminal Procedure</subject> <subj-group> <subject>Fourth Amendment: Search and Seizure</subject> <subj-group> <subject>Vehicle Passenger Rights: <italic>Brendlin v. California</italic></subject> </subj-group> </subj-group> </subj-group> </subj-group> <subj-group> <subject>4th Circuit Decisions</subject> <subj-group> <subject>Habeas Corpus</subject> <subj-group> <subject>Detaining U.S. Residents: <italic>Al-Marri v. Wright</italic></subject> </subj-group> </subj-group> </subj-group> </subj-group> <subj-group> <subject>Federal Law</subject> <subj-group> <subject>Changes to FISA Surveillance: Protect America Act of 2007</subject> </subj-group> </subj-group> <subj-group> <subject>Ethical Guidelines</subject> <subj-group> <subject>Protecting Client Confidences</subject> <subj-group> <subject>Potential for Identity Theft in Pleadings and Filings</subject> <subj-group> <subject>Drivers License Numbers</subject> </subj-group> <subj-group> <subject>Social Security Numbers</subject> </subj-group> </subj-group> </subj-group> </subj-group> </subj-group> </article-categories> ...