From owner-sc22wg5+sc22wg5-dom8=www.open-std.org@open-std.org Thu Dec 22 20:19:49 2016 Return-Path: X-Original-To: sc22wg5-dom8 Delivered-To: sc22wg5-dom8@www.open-std.org Received: by www.open-std.org (Postfix, from userid 521) id 53B0C3587F9; Thu, 22 Dec 2016 20:19:49 +0100 (CET) Delivered-To: sc22wg5@open-std.org X-Greylist: delayed 3604 seconds by postgrey-1.34 at www5.open-std.org; Thu, 22 Dec 2016 20:19:48 CET Received: from st13p21im-asmtp003.me.com (st13p21im-asmtp003.me.com [17.164.152.25]) (using TLSv1 with cipher DHE-RSA-AES128-SHA (128/128 bits)) (No client certificate requested) by www.open-std.org (Postfix) with ESMTP id 29A103566B1 for ; Thu, 22 Dec 2016 20:19:44 +0100 (CET) Received: from process-dkim-sign-daemon.st13p21im-asmtp003.me.com by st13p21im-asmtp003.me.com (Oracle Communications Messaging Server 7.0.5.38.0 64bit (built Feb 26 2016)) id <0OIL00600MUOJ900@st13p21im-asmtp003.me.com> for sc22wg5@open-std.org; Thu, 22 Dec 2016 18:19:38 +0000 (GMT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=icloud.com; s=4d515a; t=1482430778; bh=ToAjY9smJau0opwBGCXOwVghzDZobTZ78HIQYWvHXXQ=; h=Content-type:MIME-version:Subject:From:Date:Message-id:To; b=Lkb+7V5+DhF+b0muGK+88VhmUdX84Ct+g+eyVK333XoDu/FqRxGYj4bisECYGH9SD QD4LfkSEjC+fZ33/s3+YKZFJ6UjZEwHxNV0OuX15Zdg5gVz62KQ3IAlIE+OT5w6EGp pFsCGS2Gfo/4E7Rgya3xgqdD2VvLpcQWf9IEuevZjx8E90Sd9idr6X2WxG67ujCpsG cP4KBT7FR/xIeU7c+3tDoQuBCb6CZV15yq6d82plCTGSiFUYlQGhrksdmPHP76oga1 thuT5k+GQiprVYdHP0l852+ARjZSXKBE49NY7/42P2BiuCFWnWuIub1yEX9x+oV2Mk ZyIMdLhsp1gOQ== Received: from [192.168.1.2] (host-89-241-228-28.as13285.net [89.241.228.28]) by st13p21im-asmtp003.me.com (Oracle Communications Messaging Server 7.0.5.38.0 64bit (built Feb 26 2016)) with ESMTPSA id <0OIL011GYMWMSI20@st13p21im-asmtp003.me.com> for sc22wg5@open-std.org; Thu, 22 Dec 2016 18:19:38 +0000 (GMT) X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:,, definitions=2016-12-22_14:,, signatures=0 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 spamscore=0 clxscore=1034 suspectscore=1 malwarescore=0 phishscore=0 adultscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1603290000 definitions=main-1612220295 Content-type: text/plain; charset=us-ascii MIME-version: 1.0 (Mac OS X Mail 9.3 \(3124\)) Subject: WG5: Harmonizing terminology in N2113 with ISO 80000-1 From: David Muxworthy In-reply-to: <20161206022459.578959DB164@www.open-std.org> Date: Thu, 22 Dec 2016 18:19:33 +0000 Reply-to: David Muxworthy Content-transfer-encoding: quoted-printable Message-id: <5C5B11FB-590B-494C-B15F-4B3504C0C128@icloud.com> References: <20161206022459.578959DB164@www.open-std.org> To: sc22wg5@open-std.org X-Mailer: Apple Mail (2.3124) Sender: owner-sc22wg5@open-std.org Precedence: bulk The following message from a non-member was rejected by the WG5 mail = server and has only just come to my attention. It is forwarded in case = it is of interest. The table, originally in html, has been reformatted = into plain text. I trust it is legible. David -------------------- From: Marcus Foster To: "sc22wg5@open-std.org" Subject: WG5: Harmonizing terminology in N2113 with ISO 80000-1 Date: Tue, 6 Dec 2016 02:19:30 +0000 Dear members of WG5 I congratulate you on articulating the importance of unit-of-measure = checking in scientific programs and preparing a draft TS (N2113). To = quote an Australian political slogan of 1972, "It's time". Permit me to comment on the terminology used in that draft TS, as it is = inconsistent with ISO 80000-1 Quantities and units - general, the ISO = standard which underpins scientific measurement. A brief history: the language of science (quantities, units, dimensions = etc) has been used differently by different disciplines. Following = Dimensional Analysis (Bridgeman, 1922), engineers described the cgs and = MKS as three-dimensional systems of units. The first edition of the SI = Brochure (BIPM, 1970) lists quantities and units, but not dimensions and = so on. In my experience, the computer-science literature tends to use = these terms loosely and consequently can blur these concepts. The Joint Committee on Metrology (JCGM) set 'quantity' as the primary = concept in systems of units, and published the International Vocabulary = of Measurement (VIM) in 1978, and VIM3 in 2012. ISO 80000-1 is based on = VIM3. It defines and gives synonyms and commentary for terms related to = measurement. The terms of interest here are 'quantity' (no synonyms), = 'base quantity', 'quantity dimension' ('dimension of a quantity', = 'dimension'), and 'unit of measurement' ('measurement unit', 'unit'). Here are some changes that can be made to N2113 to harmonize it with ISO = notation and scientific practice. In particular, the terms on the first = two columns of the table in Shortcomings 1 are reversed; and the term = 'fundamental' is not used as a qualifier in the BIPM SI brochures nor = ISO 80000 Location N2113 term ISO 80000 term Title and elsewhere numerical quantities quantities P.v, shortcomings 1, exponents of fundamental exponents of = base line 4 dimensions quantities P.v, shortcomings 1, exponents for the fundamental exponents for = the SI line 7 SI units or dimensions base units or = dimensions P.v, shortcomings 1, Fundamental SI unit SI base quantity=09= table P.v shortcomings 1, Fundamental SI dimension SI base unit table P.vi, shortcomings 2, ISO fundamental units SI base = quantities line 1 P.vi, shortcomings 2, non-physical dimensions Non-physical = quantities line 6 P.vi, shortcomings 2, Dimensions that are not quantities that = are not=20 line 6 described using exponents of described using = exponents=20 fundamental dimensions of base = quantities P.vi, shortcomings 4, distinguish units distinguish = quantities line 1 (e.g., length from time) (e.g., length = from time but not dimensions or measures but not units = (e.g., pounds (e.g., pounds from kilograms). from kilograms). P.vi, shortcomings 5, different type for each different type = for each line 1 measure unit P.1 line 6 Fundamental SI units SI base = quantities P.1 line 11 fundamental SI dimensions Si base units P.9, 5.1 third dot distinguish different measures distinguish = different point of the same fundamental units of the = same quantity, quantity, Regards Marcus Foster Torquay, Australia = https://scholar.google.com.au/citations?hl=3Den&user=3DjPZcPiwAAAAJ&view_o= p=3Dlist_works&sortby=3Dpubdate" id=3D"LPlnk451350" = previewremoved=3D"true" = https://scholar.google.com.au/citations?hl=3Den&user=3DjPZcPiwAAAAJ&view_o= p=3Dlist_works&sortby=3Dpubdate