Dear All,
Here my proposal for the position measurement. I believe we need a third
special kind of measurement, something like a "spot measurement", which
would provide properties within a continuum, such as atmosphere, river,
ground, or sensors immersed in an object.
Sxxx Position Measurement
Subclass of:E16 Attribute Assignment
Scope note: This class comprises activities of measuring the positions
of instances of E18 Physical Thing in space and time. The position is
given as an E94 Space Primitive corresponding to a declarative place
approximating the intended real position and the time of the measurement
itself. The measured thing may either be the measurement device itself,
such as a theodolite or GPS device, a permanent survey mark, a volume
containing an E18 Physical Thing or an arbitrary spot on or within an
E18 Physical Thing. The respective position and time may be used to
document the presence of an E18 Physical Thing at some time or
indirectly the presence of an instance of E4 Period, in particular
events of scientific observation and their spatial focus.
Properties:
Oxx <#_O24_measured_(was>1 determined position (was determined by): E94
Space Primitive
Oxx2 covered thing: E18 Physical Thing
Oxx3 covered event: E4 Period
Oxx4 fell within thing: E18 Physical Thing
Oxx5 fell within event: E4 Period
The idea being, that the “covered thing” was completely present within
the given space and time.
If we would talk only about spacetime volumes, this could not be expressed.
To be checked how to connect to sampling spots within the volume of a
measurement activity.
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Dr. Martin Doerr
Honorary Head of the
Center for Cultural Informatics
Information Systems Laboratory
Institute of Computer Science
Foundation for Research and Technology - Hellas (FORTH)
N.Plastira 100, Vassilika Vouton,
GR70013 Heraklion,Crete,Greece
Vox:+30(2810)391625
Email: mar...@ics.forth.gr
Web-site: http://www.ics.forth.gr/isl
