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Data Desiccation : Facilitating Long-term Access, Use, and Reuse of ETDs. Daniel Gelaw Alemneh and Mark Edward Phillips. 14th International Symposium on Electronic Theses and Dissertations (ETD-2011) 13-17 Sept. 2011, Cape Town, South Africa. UNT’s ETDs. -General Background

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data desiccation facilitating long term access use and reuse of etds

Data Desiccation: Facilitating Long-term Access, Use, and Reuse of ETDs

Daniel Gelaw Alemneh and

Mark Edward Phillips

14th International Symposium on Electronic Theses and Dissertations (ETD-2011)13-17 Sept. 2011, Cape Town, South Africa

unt s etds
UNT’s ETDs

-General Background

-Libraries Role

background
Background
  • The University of North Texas (UNT) began accepting theses and dissertations in electronic format in 1999.
    • UNT is one of the early adopters of what was to become the ETD movement in higher education
    • One of the first three American universities to require ETDs for graduation.
unt libraries role
UNT Libraries Role
  • The UNT Libraries play an active role in facilitating access to UNT’s ETDs
    • In 2007 the Digital Projects Unit took on a stewardship role
      • Develop appropriate Metadata
      • Integrate Value added services into the ETDs
    • In 2010 we started retrospective conversion projects:
      • Digital retro-conversion (in-house project) for pre-1999 theses and dissertations previously available only in paper or microform.
      • Digital retro-conversion for ETDs (1999 to 2009) previously available only in PDF file format.
what makes up unt s etds
What makes up UNT’s ETDs?

-UNT ETDs Size

-By Access Level

-By Degree Level

access levels of unt s etds
Access Levels of UNT’s ETDs
  • 1. Public: -
      • These ETDs are open or there are no restrictions on these resources.
  • 2. Restricted:-
    • 2.1 UNT-Community:-
      • These ETDs are restricted to users associated with UNT.
      • Users are normally required to log in using their EUID if they are located outside the UNT campus.
      • The restricted ETDs after 2007 have a delay (2-5 years) and then they will be moved to "Public"
    • 2.2 UNT-Strict:-
      • These ETDs are restricted to the UNT Community.
      • This will be strictly enforced and users are always required to log in using their EUIDs, regardless of their location.
data desiccation
Data Desiccation

-Overview

-Magick Numbering

-Multiple Data Formats

-Submission Information Package (SIP)

data desiccation1
Data Desiccation
  • In the context of the UNT ETDs, data desiccation first involves converting the deposited PDF into a series of image files that serve as the primary access point to the documents online.
    • High quality JPEG images as the image format
    • Magick numbering involves two running sequences of numbers (an eight digit filename).
multiple data formats
Multiple Data Formats
  • PDF
    • Originally deposited version
  • JPGs
    • A series of derivatives converted from the original pdf:
      • jpg:- (serve as the primary access point to the documents online)
      • pro:- (the proprietary format from the PrimeOCRengine)
      • xml:- (a UNT-specific word bounding box file)
      • txt:- (ASCII text file converted from Pro format).
enhancing unt s etds access use via desiccation
Enhancing UNT’s ETDs Access/Use via Desiccation

-Multiple Formats Access Strategy

-Access by Degree Level

-Access by Country

-Access via Mobile Devices

multiple formats access strategy
Multiple Formats Access Strategy
  • In addition to the originally deposited PDF format, the data desiccation process provides and facilitates additional methods of access by:
    • exposing the page level OCR text to an increasing number of search engines
    • allowing page turning interfaces or other interfaces designed for emerging mobile devices
multiple formats access
Multiple Formats Access …
  • Longitudinal data will be collected to see if desiccated ETDs receive more use than the older, single-format PDF versions.
    • We are already witnessing an overall increase in access to the ETDs in the UNT Digital Library.
summary
Summary

References

summary1
Summary
  • Given the pressure of reading more in less time, today’s users demand access to various formats regardless of temporal and spatial restrictions and the types of devices used.
  • Based on the data, users:
    • -Increasingly use Mobile devices
    • -Come from different countries (with varied bandwidth)
    • -View one or a few pages
    • -Visit just once
  • Understanding user communities, their information needs, and their use behavior will help to move contents into the users’ space and facilitate access and use of ETDs.
summary2
Summary
  • The successful management of ETDs requires multifaceted effort across the entire life-cycle to ensure that ETDs are managed, preserved, & made accessible in a manner that today’s users expect.
  • Over the past year, the UNT Libraries have put forth great effort in making digital collections more accessible and useful in research processes.
  • Data desiccation or providing multiple options certainly facilitates both enhanced and long-term access to the contents of ETDs!
references
References
  • - The University of North Texas (UNT) ETD-Progress: http://www.library.unt.edu/digitalprojects/procedures/etd/etd-progress
  • UNT Metadata: http://www.library.unt.edu/digitalprojects/metadata
  • UNT Theses and Dissertations: http://digital.library.unt.edu/explore/collections/UNTETD/browse/
slide34

Questions?

Mark.Phillips@unt.edu

Daniel.Alemneh@unt.edu

and/or