Hi Andrea,
Sorry to come back with this, but there is another possibility... If we state that each UCD word MUST end with the ';' character, -that is, even if there are no other subsequent words- then no UCD can ever be a substring of another one.
Example:
phot.flux; is not a substring of phot.fluxDens;
The beauty of it is that no other changes are required.
It is my laziness... I always prefer to change the least...
Alberto
PS: I send this email because I'm sure you are expecting it from me ;-)
PPS: And I promise that this is the last time I mention this.
On Nov 7, 2005, at 16:47, Andrea Preite Martinez wrote:
> Dear all,
>
> I received from the IVOA Exec a request to modify all UCD1+ words that
> do not conform to what is said in the standard UCD document, i.e.:
>
> UCD1+ words at the same level in the hierarchy cannot be a starting
> substring of another
>
> that is, we cannot have phot.flux and phot.fluxDens
>
> As you know, the document at
> http://www.ivoa.net/Documents/latest/UCDlist.html
> is in the PR status, and will be moved to IVOA Recommendation after an
> appropriate action on the words concerned.
>
> The rule mentioned above is violated for the following ucd1+ words:
>
> E | phot.fluxDens | Flux density (per wl/freq/energy
> interval)
> E | phot.fluxDens.sb | Flux density surface brightness
> Q | phys.atmol | Atomic and molecular physics (shared
> properties)
> Q | phys.atmol.branchingRatio | Branching ratio
> Q | phys.atmol.coll | Related to collisions
> Q | phys.atmol.configuration | Configuration
> Q | phys.atmol.crossSection | Atomic / molecular cross-section
> Q | phys.atmol.element | Element
> Q | phys.atmol.excitation | Atomic molecular excitation parameter
> Q | phys.atmol.final | Quantity refers to atomic/molecular
> final/ground state, level, ecc.
> Q | phys.atmol.initial | Quantity refers to atomic/molecular
> initial state, level, ecc.
> Q | phys.atmol.ion | Ion
> S | phys.atmol.ionization | Related to ionization
> S | phys.atmol.level | Atomic level
> Q | phys.atmol.lifetime | Lifetime of a level
> Q | phys.atmol.lineShift | Line shifting coefficient
> Q | phys.atmol.parity | Parity
> Q | phys.atmol.sweight | Statistical weight
> S | phys.atmol.trans | Transition between states
> Q | phys.energyDensity | Energy-density
> Q | phys.massToLight | Mass to light ratio
> Q | phys.massYield | Mass yield
>
> because of the already existing words
> phot.flux
> phys.at
> phys.energy
> phys.mass
>
> In order to reach a rapid convergence on the reformulation of these
> words, I?m suggesting a possible solution for each of them in the list
> that follows:
>
> Present Suggested new
> E | phot.fluxDens | phot.flux.fluxDens or:
> phot.flux.density
> E | phot.fluxDens.sb | phot.flux.fluxDens.sb or:
> phot.flux.density.sb
> Q | phys.atmol | suppress
> Q | phys.atmol.branchingRatio | phys.branchingRatio
> Q | phys.atmol.coll | phys.collision
> Q | phys.atmol.configuration | phys.state.configuration
> Q | phys.atmol.crossSection | phys.crossSection
> Q | phys.atmol.element | phys.element
> Q | phys.atmol.excitation | phys.excitation
> Q | phys.atmol.final | phys.state.final
> Q | phys.atmol.initial | phys.state.initial
> Q | phys.atmol.ion | phys.element.ion S |
> phys.atmol.ionization | phys.ionization
> S | phys.atmol.level | phys.level
> Q | phys.atmol.lifetime | phys.level.lifetime
> Q | phys.atmol.lineShift | phys.lineShift
> Q | phys.atmol.parity | phys.state.parity
> Q | phys.atmol.sweight | phys.state.sweight
> S | phys.atmol.trans | phys.state.trans Q |
> phys.energyDensity | phys.energy.density
> Q | phys.massToLight | phys.mass.light
> Q | phys.massYield | phys.mass.yield
>
> The other possibility for the phys.atmol.xxx group is to suppress the
> word phys.at
>
> Please let me know your opinion and/or your suggestions.
>
> Andrea
>
>
> =======================================================================
> =======
> Andrea Preite Martinez
> andrea.preitemartinez-at-rm.iasf.cnr.it
> Istituto di Astrofisica Spaziale Tel.:+39.06.4993.4641
> Area di Ricerca di Tor Vergata Fax.:+39.06.2066.0188
> Via del Fosso del Cavaliere 100 Cell:+39.320.43.15.383
> 00133 Roma CDS :+33.3.90242473
> =======================================================================
> =======
>
>
Alberto Micol
ST-ECF HST Archive Scientist
Received on 2005-11-07Z17:35:28