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<font face="Times New Roman, Times, serif">Dear Semantics , dear tcg
members <br>
<br>
The Semantics has proposed a Maintenance procedure in oder to
update the UCD list ( and more generaly ivoa vocabularies) <br>
</font><font face="Times New Roman, Times, serif">as stated in the
WD <a moz-do-not-send="true"
href="http://www.ivoa.net/documents/UCDlistMaintenance/20171018/">http://www.ivoa.net/documents/UCDlistMaintenance/20171018/</a><br>
</font><br>
<font face="Times New Roman, Times, serif">We are experiencing the
first iteration of this procedure.<br>
<br>
Here is the list of new terms asked during the last revision
iteration for UCD terms asked for the period "May 2017 - Feb2018"<br>
23 terms have been proposed, discussed in the UCD expert group
and inserted in the UCD assigning tool.<br>
<br>
Q | phys.electCharge | Electric charge <br>
Q | phys.current | Electric current<br>
Q | phys.current.density | Electric current density<br>
Q | pos.incidenceAng | Incidence angle of optical ray on an
interface<br>
Q | pos.emergenceAng | Emergence angle of optical ray on an
interface<br>
Q | pos.azimuth | azimuthal angle in a generic reference plane<br>
Q | phys.reflectance | Radiance factor (received radiance
divided by input radiance)<br>
Q | phys.reflectance.bidirectional | Bidirectional reflectance<br>
Q | phys.reflectance.bidirectional.df | Bidirectional
reflectance distribution function<br>
Q | phys.reflectance.factor | Reflectance normalized per
direction cosine of incidence angle<br>
S |pos.cylindrical |Related to cylindrical coordinates<br>
Q | pos.cylindrical.r | Radial distance from z-axis (cylindrical
coordinates)<br>
Q | pos.cylindrical.azi | Azimuthal angle around z-axis
(cylindrical coordinates)<br>
Q | pos.cylindrical.z | Height or altitude from reference plane
(cylindrical coordinates)<br>
S | pos.spherical | Related to cylindrical coordinates<br>
Q | pos.spherical.r | Radial distance or radius (spherical
coordinates)<br>
Q | pos.spherical.azi | Azimuthal angle (spherical coordinates)<br>
Q | pos.spherical.colat |Polar or Colatitude angle (spherical
coordinates)<br>
Q | pos.resolution | Spatial linear resolution (not angular)<br>
S | pos.bodycentric | Body-centric related coordinate<br>
S | pos.bodygraphic | Body-graphic related coordinate<br>
Q | meta.checksum | Numerical signature of digital data<br>
Q | phys.polarization.coherency | Matrix of the correlation
between components of an electromagnetic wave<br>
<br>
The full detailed discussion is available at the dedicated web
page <a moz-do-not-send="true"
href="http://wiki.ivoa.net/twiki/bin/view/IVOA/UCDList1dot42017June2018FebRFM">http://wiki.ivoa.net/twiki/bin/view/IVOA/UCDList1dot42017June2018FebRFM</a><br>
</font><font face="Times New Roman, Times, serif"><font face="Times
New Roman, Times, serif">We would like to have these terms
agreed by the TCG in order to validate UCD List version 1.4 <br>
</font></font><br>
<font face="Times New Roman, Times, serif"><font face="Times New
Roman, Times, serif">Please revise this list and express your
comments. <br>
</font></font><font face="Times New Roman, Times, serif"><font
face="Times New Roman, Times, serif">Many thanks , <br>
</font></font><font face="Times New Roman, Times, serif"><font
face="Times New Roman, Times, serif">Mireille (Semantics WG
chair)<br>
<br>
</font></font>
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