Wednesday, May 15, 2013

Massive Open Opportunity: Supporting MOOCs in Public and Academic Libraries

A new development to be aware of:

If you’re an academic librarian, you’re probably already awash, at least peripherally, in news about MOOCs—massive open online courses have been touted as the next big thing in higher ed since they burst on the scene about a year ago................................ There are multiple potential roles for libraries in the MOOC development, support, assessment, and preservation process............

 Wikipedia entry


Monday, May 13, 2013

e-books in Academic Libraries: Challenges for Discovery and Access

Abstract

This paper examines the recent literature on the presentation of e-books in college and university libraries, focusing on three mechanisms for discovery and access: e-book vendors' interfaces, library catalogs (OPACs), and resource discovery tools (RDTs). If libraries rely on vendors' interfaces, patrons must search on multiple platforms, many of which have limited and idiosyncratic search mechanisms. The most common strategy for discovery and access—including e-books in the library catalog—brings its own set of challenges, including limited availability of records, lack of standardization, difficulties managing the addition and removal of titles, and the generally low quality of vendor-supplied records. Likewise, libraries that use resource discovery tools face another set of difficulties: incomplete coverage, reliance on metadata from external sources, problems with subject headings and authority control, difficulties with guest-user access, and continuing dependence on vendors' platforms for access to full text.

Keyword Search, Plus a Little Magic

From Lingua Franca 
Google relies on at least four facts, all of them crucial, but especially the fourth one.
  1. Computer memory chips have become so cheap and so tiny that in an office-sized space you can pack enough random-access-memory units to store an utterly gigantic automatically maintained concordance to the whole Web, augmented with copies of huge portions of what is on those sites.
  2. Networks and processors have become so fast that your search command can be delivered to a server far away and checked against the gigantic index in just hundredths of a second.
  3. The number of sites containing all of the words on a list (rather than just some of them) goes down rapidly with the length of the list, and much more rapidly when the words have low probabilities of occurrence.
  4. Humans looking for a certain piece of information can on the whole be trusted to be smart enough to supply a list of words with the crucial property of having low probability in most texts but being guaranteed to occur in texts containing the desired information.