http://creativecommons.org/licenses/by/3.0/ Copyright (c) 2006-2016 The Regents of the University of California. All rights reserved. This work is licensed under the Creative Commons Attribution 3.0 Unported License. To view a copy of this license, visit http://creativecommons.org/licenses/by/3.0/ or send a letter to Creative Commons, 444 Castro Street, Suite 900, Mountain View, California, 94041, USA. Copyright (c) 2006-2019 The Regents of the University of California. All rights reserved. This work is licensed under the Creative Commons Attribution 3.0 Unported License. To view a copy of this license, visit http://creativecommons.org/licenses/by/3.0/ or send a letter to Creative Commons, 444 Castro Street, Suite 900, Mountain View, California, 94041, USA. This ontology contains general terms for (physical) characteristics that are measured either quantitatively or qualitatively. This ontology contains general terms that are common across OBOE extensions. It extends the OBOE Core model by importing ontologies specific to measurement characteristics, measurement standards, spatial entities, temporal entities, biological taxa, and anatomical entities. This ontology contains terms for measurement standards that are common across OBOE extensions including units of measure and indices. The unit descriptions (comments) were adapted from various sources, including NIST. This ontology provides the core OBOE modeling constructs. OBOE Characteristics oboe oboe-core oboe-standards Version 1.2 A class annotation property that states that the annotated class is conceptually the same class as (i.e., conceptually equivalent to) the concept identified in the annotation value. If the value of the annotation property denotes an OWL class, then the sameConceptAsClass annotation property should be used instead. A class annotation property that states that the annotated class is conceptually the same class as (i.e., conceptually equivalent to) the referenced class (as given by the value of the annotation property). Note that being conceptually the same can differ from strict class equivalance in that the two classes may have different structural definitions within their specific ontologies, e.g., their superclasses and subclasses in the respective ontologies may differ. A class annotation property that states that the annotated class is conceptually similar (e.g., overlapping), but not identical to the concept identified by the value of the annotation property. If the value of the annotation property denotes an OWL class, then the similarConceptAsClass annotation property should be used instead. A class annotation property that states that the annotated class is conceptually similar (e.g., overlapping), but not identical to the referenced class (the value of the annotation property). The containsMeasurementsOfType property gives the MeasurementType to which measured values in some container belong. The domain is unrestricted to allow the property to be used to annotate any containers holding measured values, but its range is restricted to only subclasses of MeasurementType. If, for example, an attribute containsMeasurementsOfType "AirTemperatureType", then one can infer that the values in that attribute all represent measures of the associated Characteristic (e.g., Temperature) of the associated Entity (e.g., Air), or whatever constraints are imposed in the definition of the MeasurementType. contains measurements of type The entityRelated property asserts that the entity of one observation has an observed relationship to the entity in another observation. entity related The hasBaseQualifier together with the hasNextQualfiier property allows qualifier characteristics to be combined and ordered. For example, for an MinimumDailyAverage qualifier, the hasBaseQualifier refers to Minimum and the hasNextQualifier refers to a DailyAverage qualifier, and for a DailyAverage qualifier, the hasBaseQualifier refers to a Daily qualifier and the hasNextQualifier refers to an Average qualifier. has base qualifier The hasContext property asserts that one observation serves as the context for another observation. In a hasContext property the domain is the observation being contextualized and the range is the context. Context defines a semantic relationship between two entities that is a fundamental aspect of the observations, but not necessarily of the entities themselves. For example, most measurements are accomplished in a spatio-temporal framework that might be valuable context. The assertions made by contextual observations are assumed of the contextualized observations. Context is a transitive relationship. has context The hasMeasurement property gives the measurements of the observed entity. has measurement The hasMember property gives the observations of an observation collection. has member The hasNexQualifier together with the hasBaseQualfiier property allows qualifier characteristics to be combined and ordered. For example, for an MinimumDailyAverage qualifier, the hasBaseQualifier refers to Minimum and the hasNextQualifier refers to a DailyAverage qualifier, and for a DailyAverage qualifier, the hasBaseQualifier refers to a Daily qualifier and the hasNextQualifier refers to an Average qualifier. has next qualifier The hasObservedRelation property gives the observed relation of an observation. The observation entity is the source (head) entity of the corresponding relationship that was observed. has observed relation The hasQualifier property assigns an optional characteristic qualifier to a characteristic. Examples of qualifiers are Average, Minimum, Maximum, Daily, etc. has qualifier The measurementFor property gives the observation (observed entitiy) that a measurement is associated with. Each measurement is for exactly one observation. measurement for The hasCode property gives the underlying value (or coded representation) of a primitive value. The hasMultiplier property gives the multiplier value in a unit conversion. The hasOffset property gives the offset value in a unit conversion. The hasPower property gives the power a base unit is raised to within a derived unit. This property gives the precision of a measurement value. The usesMethod property gives the actual method used to carry out the measurement. Amount oboe-characteristics:Amount AmountOfSubstanceConcentration oboe-characteristics:AmountOfSubstanceConcentration AmountOfSubstanceMass AmountOfSubstanceWeight AmountOfSubstanceWeightFlux Angle oboe-characteristics:Angle Area oboe-characteristics:Area ArealDensity oboe-characteristics:ArealDensity ArealMassDensity oboe-characteristics:ArealMassDensity ArealMassDensityRate oboe-characteristics:ArealMassDensityRate Capacitance CatalyticActivity Charge Conductance oboe-characteristics:Conductance measures how easily electricity flows along a certain path through an electrical element. The SI derived unit for electrical conductance is the siemens Conductivity oboe-characteristics:Conductivity is a measure of a material's ability to conduct an electric current. Units are siemens per meter Count oboe-characteristics:Count Current oboe-characteristics:Current CurrentDensity DoseEquivalent Energy Force oboe-characteristics:Force Frequency oboe-characteristics:Frequency Identifier provides an identifying sequence of characters to refer to an entity within a context. An Identifier can be unique within a local context or a global context. Illuminance Inductance Irradiance oboe-characteristics:Irradiance Irradiance, radiant emittance, and radiant exitance are radiometry terms for the power per unit area of electromagnetic radiation at a surface. "Irradiance" is used when the electromagnetic radiation is incident on the surface. "Radiant exitance" or "radiant emittance" is used when the radiation is emerging from the surface. The SI units for all of these quantities are watts per square meter (W/m2) (wikipedia). All of these quantities characterize the total amount of radiation present, at all frequencies. It is also common to consider each frequency in the spectrum separately. When this is done for radiation incident on a surface, it is called spectral irradiance, and has SI units W/m3, or commonly W·m−2·nm−1. Length oboe-characteristics:Length LifeStage The developmental stage of life of a given organism. Life Stage Luminance Luminance is a photometric measure of the luminous intensity per unit area of light travelling in a given direction. It describes the amount of light that passes through or is emitted from a particular area, and falls within a given solid angle. The SI unit for luminance is candela per square metre (cd/m2). Luminosity oboe-characteristics:Luminosity MagneticFieldStrength MagneticFlux MagneticFluxDensity Mass oboe-characteristics:Mass MassDensity oboe-characteristics:MassDensity MassFlux MassPerMass oboe-characteristics:MassPerMass MassSpecificCount MassSpecificLength Molality oboe-characteristics:Molality Molality amount of substance of solute B in a solution divided by the mass of the solvent: Often favored because measurements of mass are more precise than measurements of volume. Name provides a character phrase to refer to an entity. A Name is typically used to reference an entity. For example, the Name for a particular instance of a lake might be 'Lake Tahoe'. PhotonFluxDensity oboe-characteristics:PhotonFluxDensity The number of photons striking an area per unit time. This could be probably also be called a PhotonArealDensityRate. Power Pressure oboe-characteristics:Pressure Proportion oboe-characteristics:Proportion Radiance oboe-characteristics:Radiance Radiance and spectral radiance are radiometric measures that describe the amount of light that passes through or is emitted from a particular area, and falls within a given solid angle in a specified direction. They are used to characterize both emission from diffuse sources and reflection from diffuse surfaces. The SI unit of radiance is watts per steradian per square metre (W·sr−1·m−2). RadionucleotideActivity oboe-characteristics:RadionucleotideActivity Resistance Resistivity SpecificArea SpecificEnergy SpecificVolume SpectralIrradiance Irradiance, radiant emittance, and radiant exitance are radiometry terms for the power per unit area of electromagnetic radiation at a surface. "Irradiance" is used when the electromagnetic radiation is incident on the surface. "Radiant exitance" or "radiant emittance" is used when the radiation is emerging from the surface. The SI units for all of these quantities are watts per square meter (W/m2) (wikipedia). All of these quantities characterize the total amount of radiation present, at all frequencies. It is also common to consider each frequency in the spectrum separately. When this is done for radiation incident on a surface, it is called spectral irradiance, and has SI units W/m3, or commonly W·m−2·nm−1. SpectralRadiance Speed oboe-characteristics:Speed TagNumber provides an alphanumeric string of characters to refer to an entity. A TagNumber is typically used to uniquely identify an entity such as a sample or an individual specimen such as a tree or a rock sample. Temperature oboe-characteristics:Temperature Time oboe-characteristics:Time Transmissivity Volume oboe-characteristics:Volume VolumePerVolume VolumetricArea VolumetricDensity VolumetricMassDensityRate oboe-characteristics:VolumetricMassDensityRate VolumetricRate oboe-characteristics:VolumetricRate WaveNumber oboe-characteristics:WaveNumber oboe-core:BaseCharacteristicQualifier A base qualifier denotes a simple, atomic qualifier such as average, minimum, and maximum. Base Characteristic Qualifier oboe-core:BaseUnit A base unit is a unit that is not naturally decomposed into other units. Base Unit oboe-core:CategoricalStandard oboe-core:Characteristic A characteristic represents a property of an entity that can be measured (e.g., height, length, or color). A characteristic of an entity is observed through a measurement, which further asserts a value of the characteristic for the entity. A characteristic type (e.g., "height") can be associated with many different entities, whereas an individual characteristic (a particular occurrence of the "height" characteristic) is associated to exactly one entity. Characteristic oboe-core:CharacteristicQualifier A characteristic qualifier is a derived property of an entity that must be combined with concrete characteristics to be used in a measurement. A qualifier is either a base (atomic) or composite qualifier. As an example, the base qualifier minimum can be combined with a characteristic length to create a minimum length qualified characteristic. A composite qualifer is used to combine multiple qualifiers. Characteristic Qualifier 1 1 oboe-core:CompositeCharacteristicQualifier A composite qualifier combines multiple qualifiers. Each composite qualifier has a base qualifier and a reference to another qualifier. Composite qualifiers are ordered (through hasNextQualifier) to distinguish between the scope of qualifiers, e.g., AverageMinimum versus MinimumAverage. Composite Characteristic Qualifier 2 oboe-core:CompositeUnit A composite unit is the product of at least two base or derived units. For example, 'meter per second square' denotes a composite unit defined over 'meter' (a base unit) and 'per second square' (a derived unit). Composite Unit 0 1 oboe-core:DerivedUnit A derived unit raises a base or prefixed unit to an integer power other than 0 or 1. For example, the unit 'square meter' is a unit derived from the 'meter' base unit raised to the power 2. As another example, a 'square centimeter' is a unit derived from the 'centimeter' prefixed unit raised to the power 2. BRL 20160601: I removed this restriction so that CompositeUnits like XXXPerLiter would not reason to owl:Nothing. hasUnit exactly 1 (BaseUnit or PrefixedUnit) Derived Unit oboe-core:Entity An entity is an object (e.g., a tree, a community, an ecological process). Entities constitute the foci of observations, i.e., every observation is of exactly one entity. Entity oboe-core:IdentifyingCharacteristic An identifying characteristic is used to identify or name an entity either globally or within a context, such as a name of a lake or a tag number assigned to a tree. Unlike a MeasuredCharacteristic, an IdentifyingCharacteristic is assigned and not measured. Identifying Characteristic oboe-core:Index oboe-core:MeasuredCharacteristic A measured characteristic of an entity is one that is measurable within the physical world. A measured characteristic includes primary and derived physical dimensions (e.g., length, mass, area, density). The measured value assigned to a measured characteristic may be a quantity (a numerical value) or a quality (a category), including both nominal and ordinal categories. Measured Characteristic oboe-core:MeasuredValue A measurement value is a quantitative or qualitative result of a measurement. Measurement values can contain a coded representation of the result, e.g., as a number or string. Measurement Value 1 oboe-core:Measurement A measurement is an assertion that a characteristic of an entity had a particular value with respect to an observation event. A measurement is comprised of a characteristic, a value, a measurement standard, and a protocol. Measurements can also have precision as well as a description of the methods used. Measurements can encapsulate characteristics that were recorded, but not necessarily measured in a physical sense. For example, the name of a location and a taxon can be captured through measurements. Measurement oboe-core:MeasurementType A MeasurementType describes the type of a Measurement in which the Measurement would follow the associated Protocol to record the value of the associated Characteristic of the associated Entity using the associated Standard. Any of these associated properties may be omitted, in which case the MeasurementType is only constrained by the provided associations. A MeasurementType is a hypothetical construct, in that it is not associated with a particular instance of a Measurement. Measurement Type oboe-core:Observation An observation is an assertion that an entity (e.g., biological organisms, geographic locations, or environmental features, among others) was observed by an observer. An observation primarily serves to group a set of measurements together into a single "observation event". Observations are often made within a broader context. The context of an observation is given by other observations, implying that an observed entity (and specifically each corresponding measurement) contextualizes another observed entity (and its corresponding measurements). For example, an observation associated with a location may serve as context for an observation associated with an organism. In this case, the observed characteristic values of the location (such as humidity) are assumed constant for the corresponding measurements of the organism. Observation oboe-core:ObservationCollection An observation collection is a container for a set of observations. Observation Collection 0 1 oboe-core:PrefixedUnit A prefixed unit consists of a base unit and a prefix integer value that serves as a multiplier. For example, a centimeter is a prefixed unit that combines a meter base unit and the prefix multiplier 0.01 such that one centimeter is equivalent to 0.01 meters. oboe-core:Protocol A protocol is a procedure for generating or processing data. Protocol oboe-core:Standard A standard defines a reference for comparing or naming entities via a measurement. A standard can be defined intentionally (e.g., as in the case of units) or extensionally (by listing the values of the standard, e.g., for color this might be red, blue, yellow, etc). Standard oboe-core:Unit A unit is a standard quantification for physical measurements. A unit is either a base unit, a composite unit, or a derived unit. Unit oboe-core:UnitConversion A unit conversion is a mapping from a source unit to a target unit via a multiplier and an offset value. Unit Conversion 2 Acre 4046.85642 0 AcreToMeterSquared 4046.8564 0 AcreToSquareMeter Ampere The ampere is the SI unit of electric current and is one of the seven SI base units. Angstrom The angstrom is a unit of length equal to 0.1 nanometre. 0.0000000001 0 AngstromToMeter 2 Are Bar The bar (symbol: bar) is a unit of pressure equal to 100 kilopascals, and roughly equal to the atmospheric pressure on Earth at sea level. It is not an SI or cgs units, but accepted for use with the SI. The bar is widely used in descriptions of pressure because it is only about 1% smaller than "standard" atmospheric pressure, and is legally recognized in countries of the European Union. Common derivatives are millibar (meteorology) and decibar (oceanography) 100 0 BarToKilopascal The bar (symbol: bar) is a unit of pressure equal to 100 kilopascals, and roughly equal to the atmospheric pressure on Earth at sea level. -1 Becquerel 3 Bushel 35.239072 0 BushelToLiter Candela The candela is the SI base unit of luminous intensity, i.e., the power emitted by a light source in a particular direction, weighted by the luminosity function (a standardized model of the sensitivity of the human eye to different wavelengths). Celsius The degree Celsius is a unit of thermodynamic temperature with the same magnitude as the unit kelvin but where absolute zero (0 Kelvin) is defined as -273.15 degrees Celsius. 1 273.18 CelsiusToKelvin Centigram 0.00001 0 CentigramToKilogram Centimeter 3 CentimeterCubed -1 CentimeterPerSecond 2 CentimeterSquared 0.01 0 CentimeterToMeter Centisecond 0.01 0 CentisecondToSecond Day Decibar A decibar is a unit pressure commonly used in oceanography because it's value is generally equivalent to depth in meters. 1 dbar = 0.1 bar = 10 kPa 0.1 0.0 DecibarToBar Decigram 0.0001 0 DecigramToKilogram Decimeter 0.1 0 DecimeterToMeter Decisecond 0.1 0 DecisecondToSecond 0.0174533 0 DegreToRadian Degree Dekagram 0.01 0 DekagramToKilogram Dekameter 10 0 DekameterToMeter Dekasecond 10 0 DekasecondToSecond FahrenheitDegree 0.556 255.402 FahrenheitDegreeToKelvin Fathom 1.8288 0 FathomToMeter Foot FootGoldCoast 0.3048 0 FootGoldCoastToMeter 2 FootSquared 0.3048 0 FootToMeter 3 Gallon 3.78541178 0 GallonToLiter Grad 0.015707 0 GradToRadian Gram -1 2 GramPerGram -1 2 GramPerLiter -3 2 GramPerMeterCubed 0.001 0 GramToKilogram 2 Hectare Hectogram 0.1 0 HectogramToKilogram Hectometer 100 0 HectometerToMeter Hectopascal Unit of pressures often used in meteorology. One hectopascal is equivalent to one millibar; one standard atmosphere is exactly equal to 1013.25 hPa. One hectopascal corresponds to about 0.1% of atmospheric pressure near sea level (Wikipedia). HectopascalToPascal Hectosecond 100 0 HectosecondToSecond -1 Hertz Hour 3600 0 HourToSecond Inch 3 InchCubed 0.0254 0 InchToMeter Kelvin Kilogram -1 2 KilogramPerLiter -3 2 KilogramPerMeterCubed -2 2 KilogramPerMeterSquared -1 -2 3 KilogramPerMeterSquaredPerDay -1 Kilohertz 3 Kiloliter Kilometer 2 KilometerSquared 1000 0 KilometerToMeter Kilopascal Kilosecond 1000 0 KilosecondToSecond -1 2 Knot A knot is one nautical mile per hour, which is equal to exactly 1.852 km/h and approximately 1.151 mph. LinkClarke 0.201166 0 LinkClarkeToMeter 3 Liter -1 2 LiterPerSecond 0.001 0 LiterToMeterCubed Lumen Megagram 1000 0 MegagramToKilogram -1 Megahertz Megameter 1000000 0 MegameterToMeter Megasecond 1000000 0 MegasecondToSecond Meter 3 MeterCubed -1 2 MeterPerSecond 2 MeterSquared MicroeinsteinsPerMeterSquaredPerSecond An einstein is a unit used in irradiance and in photochemistry. One einstein is defined as one mole of photons, regardless of their frequency. Therefore, the number of photons in an einstein is Avogadro's number, 6.022×1023. Quantum flux of Photosynthetically active radiation (PAR) is usually reported in microeinsteins per second per square meter, one microeinstein being one-millionth of an einstein. Irradiance might be measured in einsteins per square metre per second, if the source is monochromatic. (note: If the optical frequency is not well defined this is a sloppy misuse of the term irradiance, which is defined in terms of power per unit area, and p. The einstein is used in studies of photosynthesis since the light requirement for the production of a given quantity of oxygen is a fixed number of photosynthetically active photons (about nine photosynthetically active einsteins per mole of oxygen formed). It is named in honor of Albert Einstein, who in a 1905 paper explained the photoelectric effect in terms of light quanta, now called photons, an idea introduced by Max Planck. Microgram -1 2 MicrogramPerGram -1 2 MicrogramPerLiter -3 2 MicrogramPerMeterCubed 1000000000 0 MicrogramToKilogram 3 Microliter Micrometer 2 MicrometerSquared 1000000 0 MicrometerToMeter MicromolePerKilogram Unit of concentration often used for gasses (e.g., oxygen, or O2) because it is related to solubility measurements. MicromolePerLiter MicromolePerMeterCubed Micron 1000000 0 MicronToMeter Microsecond 1000000 0 MicrosecondToSecond MicrosiemensPerMeter Mile 2 MileSquared 1609.344 0 MileToMeter Millibar A millibar is a unit pressure commonly used in meterology. 1 mbar = 0.001 bar = 0.1 kPa = 1 hPa (hectopascal) 0.0010 0.0 MillibarToBar Milligram -1 2 MilligramPerLiter -3 2 MilligramPerMeterCubed -1 -3 3 MilligramPerMeterCubedPerDay -1 -2 3 MilligramPerMeterSquaredPerDay 1000000 0 MilligramToKilogram -1 Millihertz 3 Milliliter -1 2 MilliliterPerLIter A unit of concentration used for liquid-liquid solutions or for mixtures of gasses and of gasses and liquids. Millimeter 2 MillimeterSquared 0.001 0 MillimeterToMeter MillimolePerLiter MillimolePerMeterCubed Millisecond 0.001 0 MillisecondToSecond MillisiemensPerMeter Minute 60 0 MinuteToSecond Mole -1 2 MolePerLiter -3 2 MolePerMeterCubed Nanogram -1 2 NanogramPerLiter 1000000000000 0 NanogramToKilogram Nanometer 1000000000 0 NanometerToMeter NanomolePerLiter Nanosecond 1000000000 0 NanosecondToSecond NauticalMile 1852 0 NauticalMileToMeter -1 -2 3 Newton The newton is the unit of force derived in the SI system; it is equal to the amount of net force required to accelerate a mass of one kilogram at a rate of one meter per second per second. 1 N = kg m s-2 NominalDay 86400 0 NominalDayToSecond NominalHour 3600 0 NominalHourToSecond NominalLeapYear 31643326 0 NominalLeapYearToSecond NominalMinute 60 0 NominalMinuteToSecond NominalWeek 604800 0 NominalWeekToSecond NominalYear 31556926 0 NominalYearToSecond Number -2 2 NumberPerMeterSquared PartPerThousand -1 -2 3 Pascal The pascal (symbol: Pa) is the SI derived unit of pressure. It is a measure of force per unit area, and defined as one newton per sqare meter. 1 Pa = N m-2 Percent Ratio of two quantities as percent composition (1:100). 3 Pint 0.473176473 0 PintToLiter Pound 0.4536 0 PoundToKilogram PracticalSalinityUnit At the simplest level, salinity is the total amount of dissolved material in grams in one kilogram of sea water. So it is typically thought of as a dimensionless quantity with no units. It is described here as an Index. For more information, see current physical oceanographic references, such as http://oceanworld.tamu.edu/resources/ocng_textbook/chapter06/chapter06_01.htm Practical Salinity Unit 3 Quart 0.946352946 0 QuartToLiter Radian -1 ReciprocalMeter Second Siemens The siemens (symbol: S) is the SI derived unit of electric conductance and electric admittance. Conductance and admittance are the reciprocals of resistance and impedance respectively, hence one siemens is equal to the reciprocal of one ohm, and is sometimes referred to as the mho. It is named after the German inventor and industrialist Ernst Werner von Siemens. In English, the term siemens is used both for the singular and plural. The 14th General Conference on Weights and Measures approved the addition of the siemens as an SI derived unit in 1971. It is a composite unit in OBOE because it is composed of 2 base units, and OBOE-derived units are a single base unit raised to a power. a siemens is Ampere/volt -1 2 SiemensPerMeter Conductivity is the reciprocal (inverse) of electrical resistivity, ρ, and has the SI units of siemens per metre (S·m-1). "siemens" is used for both singular and plural. Ton 907.2 0 TonToKilogram Tonne 1000 0 TonneToKilogram Volt The volt is defined as the value of the voltage across a conductor when a current of one ampere dissipates one watt of power in the conductor.[2] It can be written in terms of SI base units as: m2 · kg · s−3 · A−1. It is also equal to one joule of energy per coulomb of charge, J/C. WattPerMeterSquared WattPerMeterSquaredPerSteradian Yard YardIndian 0.914399 0 YardIndianToMeter 2 YardSquared 0.914398 0 YardToMeter owl:Thing Version 1.2 Copyright (c) 2006-2016 The Regents of the University of California. All rights reserved. This work is licensed under the Creative Commons Attribution 3.0 Unported License. To view a copy of this license, visit http://creativecommons.org/licenses/by/3.0/ or send a letter to Creative Commons, 444 Castro Street, Suite 900, Mountain View, California, 94041, USA. This ontology contains general terms for (physical) characteristics that are measured either quantitatively or qualitatively. OBOE Characteristics Version 1.2 http://creativecommons.org/licenses/by/3.0/ Copyright (c) 2006-2019 The Regents of the University of California. All rights reserved. This work is licensed under the Creative Commons Attribution 3.0 Unported License. To view a copy of this license, visit http://creativecommons.org/licenses/by/3.0/ or send a letter to Creative Commons, 444 Castro Street, Suite 900, Mountain View, California, 94041, USA. This ontology provides the core OBOE modeling constructs. oboe-core Version 1.2 Copyright (c) 2006-2016 The Regents of the University of California. All rights reserved. This work is licensed under the Creative Commons Attribution 3.0 Unported License. To view a copy of this license, visit http://creativecommons.org/licenses/by/3.0/ or send a letter to Creative Commons, 444 Castro Street, Suite 900, Mountain View, California, 94041, USA. This ontology contains terms for measurement standards that are common across OBOE extensions including units of measure and indices. The unit descriptions (comments) were adapted from various sources, including NIST. oboe-standards Version 1.2 Copyright (c) 2006-2016 The Regents of the University of California. All rights reserved. This work is licensed under the Creative Commons Attribution 3.0 Unported License. To view a copy of this license, visit http://creativecommons.org/licenses/by/3.0/ or send a letter to Creative Commons, 444 Castro Street, Suite 900, Mountain View, California, 94041, USA. This ontology contains general terms that are common across OBOE extensions. It extends the OBOE Core model by importing ontologies specific to measurement characteristics, measurement standards, spatial entities, temporal entities, biological taxa, and anatomical entities. oboe Version 1.2 The characteristicFor property gives the entity of the characteristic. characteristic for The hasSourceUnit property gives the source unit being converted from within a unit conversion. has source unit The hasTargetUnit property gives the target unit being converted to within a unit conversion. has target unit The hasUnit property gives the underlying base or derived unit for a derived or composite unit, respectively. has unit The hasValue property gives the value of the measurement. has value The measuresCharacteristic property gives the Characteristic that would be measured by a MeasurementType. measures characteristic The measuresEntity property gives the Entity that would be measured by a MeasurementType. measures entity The measuresUsingProtocol property gives the Protocol that would be used by a MeasurementType. measures using protocol The measuresUsingStandard property gives the Standard that would be used by a MeasurementType. measures using standard The ofCharacteristic property gives the entity characteristic measured by a measurement. of characteristic The ofEntity property gives the observed entity of an observation. of entity The usesProtocol property gives the protocol used in a measurement. uses protocol The usesStandard property gives the standard (e.g., unit) used in a measurement. uses standard