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Re: [uom-ontology-std] What is mass?

To: uom-ontology-std <uom-ontology-std@xxxxxxxxxxxxxxxx>
From: Pat Hayes <phayes@xxxxxxx>
Date: Sun, 4 Oct 2009 21:59:18 -0500
Message-id: <303FF02B-74A0-42C0-A9D9-2312227ACCB6@xxxxxxx>

On Oct 2, 2009, at 2:51 AM, Matthew West wrote:    (01)

> Dear Pat,
>
>> On Sep 29, 2009, at 4:27 PM, Gunther Schadow wrote:
>>
>>> An object may have the property "maximum allowable temperature"
>>>
>>> That object would also have the property "actual temperature" at
>>> any point in time.
>>>
>>> The object might never have the property "actual temperature"
>> whose
>>> quantity value is equal to its property  "maximum allowable
>>> temperature".
>>>
>>> Either way, maximum allowable temperature and actual temperature
>>> are both special kinds of temperatures.
>>
>> Exactly.
>
> MW: Then I ask you how I know when I look at a temperature whether  
> it is
> a maximum allowable one or not.    (02)

The question is meaningless.    (03)

Pat    (04)

>
> Regards
>
> Matthew West
> Information  Junction
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>
>
>>
>> Pat
>>
>>>
>>> regards,
>>> -Gunther
>>>
>>> Chris Partridge wrote:
>>>> Gunther,
>>>>
>>>> Maximum allowable temperature is a disposition of the object.
>>>> The object may reach never reach that temperature, or may reach
>> it,
>>>> even
>>>> exceed it, but that does not have much, in itself, to do with
>> the
>>>> property.
>>>>
>>>> The property is something like: other things being equal, if you
>>>> stay below
>>>> this temperature the object (more often, a type of object) will
>>>> operate as
>>>> specified - if you go above it then it may not.
>>>>
>>>> (Allowable is probably not the best example, as one could try
>> and
>>>> cash this
>>>> out by saying that one is defining two states that the object
>> can
>>>> be in -
>>>> below (or equal) to the maximum and above the maximum. But that
>>>> would ignore
>>>> the intention that staying within the 'allowable' range should
>>>> provide some
>>>> guarantee of normal operation.)
>>>>
>>>> So, the object has (or does not have) this property whatever its
>>>> actual
>>>> temperature.
>>>>
>>>> I suppose one could argue that these are not quantities at all -
>>>> but then (I
>>>> am told) most useful engineering measures would be excluded.
>>>>
>>>> Regards,
>>>> Chris Partridge
>>>> Chief Ontologist
>>>
>>>
>>>
>>> --
>>> Gunther Schadow, M.D., Ph.D.
>> gschadow@xxxxxxxxxxxxxxx
>>> Associate Professor           Indiana University School of
>> Informatics
>>> Regenstrief Institute, Inc.      Indiana University School of
>> Medicine
>>> tel:1(317)423-5521
>> http://aurora.regenstrief.org
>>>
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>>
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>
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>    (05)

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IHMC                                     (850)434 8903 or (650)494 3973
40 South Alcaniz St.           (850)202 4416   office
Pensacola                            (850)202 4440   fax
FL 32502                              (850)291 0667   mobile
phayesAT-SIGNihmc.us       http://www.ihmc.us/users/phayes    (06)






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