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Preview: 025.431: The Dewey blog

025.431: The Dewey blog

Everything you always wanted to know about the Dewey Decimal Classification® system but were afraid to ask ...

Published: 2017-07-12T11:19:03-04:00


International Dewey Users Meeting at IFLA 2017


The annual International Dewey Users Meeting (and breakfast) will be held in conjunction with the World Library and Information Conference (IFLA) in Wrocław, Poland, on Tuesday, 22 August, at 8:00-9:30 a.m. in Centennial Hall, Oval 33. Come join us to...

Dewey Breakfast Recap


The Dewey team had a successful ALA Annual. Thanks to those of you who joined us Saturday morning for a hearty Dewey Update Breakfast! Attendees heard about updates to the DDC approved at EPC Meeting 140, were taught some tips...

EPC Meeting 140


On June 12–13, Meeting 140 of the Dewey Decimal Classification (DDC) Editorial Policy Committee (EPC) was held at the Library of Congress (LC) in Washington, DC. When we meet at LC, Dewey classifiers at the Library have the opportunity to...

Dewey by the Numbers


Here’s a brief snapshot of the DDC 23 EN database (the database associated with the English-language version of DDC 23) as of 1 June 2017:

New provisions for computer security and Internet governance


At its June 2016 Meeting 139, the DDC Editorial Policy Committee (EPC) approved new and modified subdivisions for 005.8 Computer security: 005.82 Countermeasures to threats 005.824 Data encryption 005.83 Access control 005.87 Threats 005.88 Malware [Note: 005.86 Data backup and...

Dewey Update Breakfast and ALCTS Public Libraries Technical Services Interest Group/Cataloging of Children's Materials Committee Meeting


Come hear about what's new in the world of Dewey from Julianne Beall and Alex Kyrios, Dewey editorial team members. Juli will give tips on how best to search OPACs using Dewey numbers, while Alex will review significant (and hot-off-the-press!)...

Chemical weapons and chemical warfare


Where are works on chemical weapons and chemical warfare classed? That depends on what aspect is covered. We’ll touch on a few of the many aspects. In international law, control of chemical weapons is classed in 341.735 Control of chemical...

How many zeros are needed for standard subdivisions?


When you are training new classifiers on WebDewey, do you know a quick way to help them identify how many zeros are needed for standard subdivisions in a specific place, and also help them understand why extra zeros are sometimes...

Dewey by the Numbers


Here’s a brief snapshot of the DDC 23 EN database (the database associated with the English-language version of DDC 23) as of 1 March 2017:

Updates to historical period numbers


At its June 2016 Meeting 139, the DDC Editorial Policy Committee (EPC) approved new historical period numbers in 930-990 for Pakistan, Bangladesh, Syria, Israel, Jordan, Myanmar, Philippines, Ethiopia, Benin, Tanzania, Mauritius, Guatemala, and Guyana. EPC also approved updates to existing...

Roses, garlic, and cherries: Angiosperms outside botany


Previous blog posts have described the extensive revision of 583-584 Angiosperms, most recently the post entitled "New and improved." What about treatment of angiosperms outside botany—are there ripple effects? Yes, wherever a number is built using numbers from 583-584. Let’s...

Further updates for classification of living organisms


Readers of the Dewey blog will recall that we recently extensively revised 583-584, updating the schedules for angiosperms in accordance with the Angiosperm Phylogeny Group's updated classification of flowering plants (APG III). And last week, you got to meet Dewey...

Dementia: New and changed provisions


At its Meeting 139, the DDC Editorial Policy Committee approved new and changed provisions for dementia in the medicine schedule. Previously, comprehensive medical works on dementia were classed along with various other diseases in 616.83 Other organic diseases of central...

Swan song


Back in October, a pair of trumpeter swans showed up by the pond at OCLC headquarters in Dublin, Ohio, and they seem to have made their home there. OCLC held a company-wide survey to name the swans, eventually narrowing it...

Dewey by the Numbers


Here’s a brief snapshot of the DDC 23 EN database (the database associated with the English-language version of DDC 23) as of 1 December 2016:

New and improved


Those of you working in 583–584 in the past several days may have noticed some changes. Over a year ago we announced a proposal to revise the development under 583–584 to adopt the Angiosperm Phylogeny Group’s 2009 classification for flowering...

Use standard subdivisions notation in an add table, or go straight to Table 1?


Are you having problems using the WebDewey number building tool when you have been sent to an add table, but you want to add standard subdivision notation? Do you know when you should click on notation in the add table,...

BISAC Mappings to Dewey


After EPC Meeting 139 had concluded, one of our major editorial projects for the summer was to bring our mappings of BISAC headings to the DDC up to level of the 2015 edition of BISAC. The updated mappings are now...

Reading multiple history notes


The Dewey team received a question from a translator some time ago regarding one of the new numbers for municipalities of South Africa. We thought the answer would be helpful as a general illustration of how to read history notes...

Dewey at IFLA 2016


Papers and presentations from the IFLA 2016 Classification & Indexing Satellite Meeting "Subject Access: Unlimited Opportunities," held 11-12 August at the State Library of Ohio, Columbus, OH, are available here. Among them are two that focus on DDC: Crowdsourcing the...