Two Days International Seminar at Government Law College Ujjain (Madhya Pradesh)
March 28, 2026 at 10:30am to March 29, 2026 at 5:30pm
LIS Links
First and Largest Academic Social Network of LIS Professionals in India
LIS Links Becoming More Social
Birthdays
Birthdays Today
Latest Activity
Gokhale Institute of Politics and Economics (GIPE), Pune, is organizing a National Workshop on DSpace 9.0, which will be held from 08–10 April 2026 at Gokhale Institute of Politics and Economics (GIPE), Pune
April 8, 2026 at 9am to April 10, 2026 at 5:30pm
Two Days International Seminar at Government Law College Ujjain (Madhya Pradesh)
March 28, 2026 at 10:30am to March 29, 2026 at 5:30pm
"Recently, we celebrated National Library Week. We are pleased to share some clips in this regard:https://www.youtube.com/watch?v=NPo4U4CVjMo"
"Recently, the Dept LIS U.O.U Haldwani successfully organized a 10-day MLIS-105 ICT Workshop.
https://www.youtube.com/watch?v=NheFE8Tp3kU"
"2Days Int. Seminar "Libraries and Information Technology:A Global Platform for Multidisciplinary Knowledge Integration&Innovation"28-29 Mar."
Half Life of Literature in LIS
Replies to This Forum
-
Permalink Reply by Ajay Sharma on
-
Hello dear,
Happy new year.I am giving some information about Half Life of Literature. I hope it will be helpful for you.
Half-Life of Scientific Literature
The term "half-life" comes from Burton, R. E., and R. W. Kebler. 1960. The "half-life" of some scientific and technical literatures. American documentation 11: 18-22. It makes an analogy to the radioactive decay of nuclear particles and assumes an exponential curve.
Use of the Library material can be measured a number of different ways (e.g., requests for the document via interlibrary loan or document delivery, citations to the publication, or number of times a book is circulated). Such studies help librarians decide which documents to keep or discard.
The rate and pattern at which usage drops of has been shown to vary by discipline. Generally speaking, documents in the physical sciences receive most of their use early in their "lives" and then drop off rather steeply, whereas documents in the humanities tend to be used on a more consistent basis and have a less steep drop off curve.
To compare the speed of decay in different subjects, "half-life" is used as a measure. Half-life refers to the time during which one half of the current active literature was published.
ISI's Journal Citation Reports (1997) defines "cited half-life" as "the number of journal publication years going back from the current year which account for 50% of the total citations received by the cited journal in the current year."Ajay Sharma
Librarian,
UPTEC, Lucknow
E-mail:akss.ajay@gmail.com
© 2026 Created by Dr. Badan Barman.
Powered by
