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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: 2018-01-24T17:13:31-05:00


The Dewey team is hiring


Have you ever wondered what it’s like to be a Dewey editor, to be involved in the maintenance and development of the world’s most widely used bibliographic classification system? Are you the person your colleagues turn to when they have...

Numbers with Two Sets of Standard Subdivisions


From time to time you may have run across a Dewey number with two sets of standard subdivisions. For example: 470.01–470.09 Standard subdivisions of Italic languages vs. 470.1–470.9 Standard subdivisions of Latin 646.7001–646.7009 Standard subdivisions of management of personal and...

Class-here notes


What are the functions of class-here notes in the DDC? Here is the Dewey Glossary entry: Class-here note A note that identifies topics that are equivalent to the whole of the class under which the note appears. The topic as...

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 2017: We are now presenting statistics on Relative Index terms and mapped headings in a more...

Civil and political rights of social groups other than ethnic and national groups


At 323.3 Civil and political rights of other social groups is the scope note: "groups other than ethnic and national groups." Some social groups have had no specific subdivision; they have been in standing room at 323.3. One might think...

New notation for historical periods of western and central Europe


In response to a request from our colleagues at the European DDC Users Group (EDUG), we’ve established new notation for some early historical periods of western and central Europe. The changes provide more detail for individual regions, such as their...

Nilo-Saharan languages and Nilo-Saharan peoples


At its Meeting 140, EPC approved subdividing Table 6 notation for Nilo-Saharan languages. The Nilo-Saharan languages constitute the last major group of African languages to be subdivided in DDC. According to Ethnologue, there are 207 Nilo-Saharan languages. There is literary...

Enhanced history information in WebDewey


In our recap of this year’s Dewey Breakfast, I mentioned we had implemented changes to the display of history information in WebDewey. These changes are live, and it’s worth taking a closer look at them here. What sort of changes?...

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 September 2017: We are now presenting statistics on Relative Index terms and mapped headings in a more...

Sustainability and T1—0286 Green technology (Environmental technology)


At its Meeting 140, EPC approved changes to clarify (1) how works on sustainability should be classed and (2) how T1—0286 Green technology (Environmental technology) should be used. The changes are now in WebDewey. Notes have been added in several...

New numbers for martial arts topics


Since last year, the editorial team has published two rounds of updates to the schedules for martial arts. These changes were approved by EPC at both Meetings 139 and 140, and are now live in WebDewey. Martial arts are found...

Updates to Table 2


Recent changes in two parts of Table 2 are now available in WebDewey. The first set of changes concerns the provinces of Sardinia, in Italy, and the second deals with the West Bank and the Gaza Strip, in the Middle...

Dewey Print Editions


The Dewey Decimal Classification (DDC) is frequently updated by the Dewey editorial team. These changes are available in WebDewey the next day. Consequently, print editions, with their multiyear publication cycles, became obsolete very quickly. In an effort to provide libraries...

2017 European DDC Users Group Meeting


The European DDC Users Group (EDUG) held its 11th annual meeting 27-28 June 2017 in Paris at the Bibliothèque nationale de France (BnF). All the presentations described below are available here. The first day began with a presentation and discussion:...

International Dewey Users Meeting at IFLA 2017


(Updated with information on how to find the room where we will be meeting.) 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,...

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!)...