Procedure::Process

: Public <<FeatureType>> Class

Created:	8/08/2012 1:42:19 PM
Modified:	20/06/2015 2:36:42 PM

Project:
Author:	Jeremy Tandy
Version:	1.0
Phase:	1.0
Status:	Proposed
Complexity:	Easy
Difficulty:
Priority:
Multiplicity:
Advanced:
UUID:	{9E8CC89F-2F2F-42ae-9841-E9C1D838045F}
Appears In:	Context diagram: SamplingObservation, Context diagram: ComplexSamplingMeasurement, Context diagram: SamplingCoverageMeasurement, Context diagram: Process, Process Overview

Class 'OM_Process' (related to OM_Observation via the 'Procedure' Association) is used to define the process(es) involved in generating an observation. An instance of OM_Process is often an instrument or sensor (perhaps even a sensor in a given calibrated state), but it may be a human observer executing a set of instructions, a simulator or process algorithm. The 'Procedure' should provide sufficient information to interpret the result of an observation; thus if a sensor is recalibrated or its height above local ground is changed, a new instance of OM_Process should be created and associated with subsequent observations from that sensor (at least until the sensor is changed again). Predominantly we expect the Process instance to be externally published / defined and 'static' (e.g. perhaps changing less often than once per month due to amendments to operational protocols etc.). The class 'Process' provides a concrete implementation of OM_Process (from ISO 19156). The implementation is intended to support the following requirements: 1) reference to supporting documentation (documentationRef); e.g. online documentation describing the procedure in detail; 2) specification of parameters that remain fixed within a particular configuration of the procedure (Configuration); a soft-typed approach is used here following the pattern adopted for OM_Observation/parameter; 3) specification of the resolution [1] with which each observed physical phenomenon is measured; and 4) specification of the measuring interval [2] of the instrument or sensor for each observed physical phenomenon. [1] Resolution: smallest change in a quantity being measured that causes a perceptible change in the corresponding indication (from the 'International vocabulary of metrology' [http://www.bipm.org/utils/common/documents/jcgm/JCGM_200_2008.pdf]) [2] Measuring interval: set of values of quantities of the same kind that can be measured by a given measuring instrument or measuring system with specified instrumental uncertainty, under defined conditions (from the 'International vocabulary of metrology' [http://www.bipm.org/utils/common/documents/jcgm/JCGM_200_2008.pdf])

Attributes
Associations To
Associations From
Tagged Values
Other Links

Attribute

Public GenericName
documentationRef

Details:

Alias:
Initial:
Stereotype:
Ordered:
Range:	Range:0 to 1
Transient:	False
Derived:	False
IsID:	False

inlineOrByReference=byReference
sequenceNumber=1

Notes:

Reference to an external process definition providing information about relevant documentation that describes the associated Process.

Element	Source Role	Target Role
MeasurementContext Class	Name:	Name: context The association role 'context' references an instance of MeasurementContext class that defines resolution and measuring interval for a specific measurand.
Details:
«DataType» NamedValue Class	Name:	Name: parameter The association role 'parameter' references an instance of NamedValue that specifies parameters associated with a particular configuration of the procedure (Configuration)
Details:

Element	Source Role	Target Role
«FeatureType» ComplexSamplingMeasurement Class	Name: generatedObservation	Name: procedure The association role 'procedure' is further constrained to refer to an entity of type Process (from WMO METCE). This ensures that a valid concrete implementation of OM_Process is supplied.
Details:
«FeatureType» SamplingObservation Class	Name: generatedObservation	Name: procedure The association role 'procedure' is further constrained to refer to an entity of type Process (from WMO METCE). This ensures that a valid concrete implementation of OM_Process is supplied.
Details:
«FeatureType» SamplingCoverageMeasurement Class	Name: generatedObservation	Name: procedure The association role 'procedure' is further constrained to refer to an entity of type Process (from WMO METCE). This ensures that a valid concrete implementation of OM_Process is supplied.
Details:

Tag	Value
byValuePropertyType	false
Details: Values: true,false Default: false Description: Create a property type that requires that the instance is encoded inline (applies to ISO 19136:2007 encoding rule). Always set to false in INSPIRE.
isCollection	false
Details: Values: true,false Default: false Description: Identifies the feature type as a feature collection.
noPropertyType	false
Details: Values: true,false Default: false Description: Surpress creation of a standard property type that supports inline or by-reference encoding (applies to ISO 19136:2007 encoding rule). Always set to false in INSPIRE.

Object	Type	Connection	Direction	Notes
OM_Process	Class	Generalization	To
«FeatureType» Process	Class	Generalization	From