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Home » Eclipse Projects » Babel » Fw: uomo in structural engineering project(forwarding discussion on missing message bundles with Babel)
icon5.gif  Fw: uomo in structural engineering project [message #674911] Sun, 29 May 2011 12:46
Werner Keil is currently offline Werner KeilFriend
Messages: 1085
Registered: July 2009
Senior Member
Dear Kit/all,

Could you please help the import the UOMo message bundles into Babel?
The download site is now or (should the RC be a problem Wink also on the preview to 0.6

Luca and other Eclipse community members would be more than happy to contribute to translations or symbols still missing for certain countries and locales.


----- Original Message -----
From: "Luca Salvatori"
Newsgroups: eclipse.uomo
Sent: Friday, May 27, 2011 3:57 AM
Subject: Re: uomo in structural engineering project

> Dear Werner,
> I try and keep the discussion alive (see previous post in this tread,
> also quoted below):
> - I have noticed that some non-SI units (both in NonSI and in
> USCustomary) lack of symbol in (e.g., inch, pound,
> pound-force, metric-ton), some other unit symbols in the same file have
> been commented. I do not see the reason (I had to add the first group
> and uncomment the second group for my test to work.
> - How does UOMo relate to JScience? You mentioned J.M. Dautelle, who
> seems now active in JScience. Are the two projects still connected
> somehow (besides using the same API)?
> Best wishes,
> Luca
> --
> Dear Werner,
> thanks for you reply.
> On 16/05/2011 00:01, Werner Keil wrote:
>> Dear Luca,
>> Thanks a lot for raising the question and exploration use
>> cases for UOMo in your structural engineering project.
>> The org.eclipse.uomo.units.NonSI class was taken from the
>> earlier (JSR) implementation, Jean-Marie, myself and others
>> had worked on.
>> It was pointed out by people at Google and others providing
>> input, that this SystemOfUnits may not have the most lucky
>> name, and seem a bit like "dump" for all kinds of units
>> that don't fit into other categories.
> I provide some more details on what I am doing, hoping that the
> description of an usage-attempt be useful.
> While exploring uomo, I needed some units already defined in NonSI (e.g.
> kilogram-force). Then I tried adding new units useful for my project.
> Indeed, I started treating NonSI exactly as you wrote: I put all new
> units in it (and upgraded the class and its constants to public, for the
> sake of my tests).
> Units I had to add for my structural engineering project are those still
> used by some practitioner engineers, for example, the metric-tonn-force,
> or the metric-technical-unit-of-mass (the mass which accelerated by 1
> m/s results in 1 kgf). I think that these units might be common also in
> other European countries besides Italy and deserve to be added somewhere
> instead than being redefined by users (such as me).
> Whether these units belong to a clearly nameable set, I am not sure. If
> it were for Italy, I would put them in an EngineeringCustomary or
> something similar. On the other hand, they may be happy to stay in
> NonSI, with their friends kilogram-force, etc.
> I agree that NonSI is quite vague and wide. Maybe some units should be
> moved to an UK specific set, and other to a "SIAffine" set, in which I
> would put units which are non-SI but whose definition is dependent on SI
> (e.g. kilogram-force, metric ton, angstrom, and those that I defined above).
> BTW, I also added some units, which, I assumed, are common in US
> engineering practice, such as kilopound (kip) and kilopound-force
> (kipf). The assumption is due to the fact that they are present in every
> US engineering program I checked. These units might be at home in
> USCustomary, but I am not in the (geographic) position to assert that.
>> Thus USCustomary was
>> created which you may notice, contains certain units for
>> the US context, which NonSI has similar UK counterparts
>> for. I'm open to constructive suggestions for a new Out of The
>> Box system similar to SI or USCustomary. Considering it is
>> final at the moment like all other unit systems, I agree,
>> its members are pretty much for internal usage only.
>> An alternative to creating further (final) default unit
>> systems would be to move the elements into
>> org.eclipse.uomo.units.AbstractSystemOfUnits making them
>> abstract and thus only available for implementing unit
>> systems.
> This sound interesting too. However, my first temptation when seeing a
> class named AbstractSystemOfUnits would be to derive from it (as it is
> currently done in uomo). This would end-up in having all units available
> in concrete sub-classes and this might create some confusion.
>> This would also allow usage by custom-specific unit systems,
>> i.E. if you find such need in your project or other use
>> cases.
>> Kind Regards,
>> Werner
> Kind regards,
> Luca

[Updated on: Mon, 30 May 2011 13:10] by Moderator

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