University of Hawaii at Manoa Library

Technical Features

eVols allows users to save, share, and search research data in the institutional repository. It is organized to accommodate the multidisciplinary and organizational needs of a large institution. eVols is organized into Communities, Sub-Communities, and Collections, each of which can be customized to allow for flexibility in determining policies and workflow.

eVols uses an open-source software, called DSpace, which was developed by MIT and Hewlett Packard. DSpace provides the stable, long-term storage needed to house the digital products of UHM faculty and researchers.

The eVols Structure

eVols is made up of Communities, which in turn contain Sub-communities or Collections.

Communities are groups that contribute content to the repository. These might be departments, labs, research centers, schools, or other administrative units within an institution. Communities determine their own content guidelines and decide who has access to its contributions. A eVols staff member works with the head of a Community to set up workflows for content to be approved, edited, tagged with metadata, etc.

Communities can be further divided into Sub-communities that work the same way as Communities.

Communities and Sub-communities hold various Collections, which house individual content items, or files. A Collection must belong to at least one Community, but may belong to multiple Communities: for example, a research collaboration between two Communities may result in a Collection belonging to both Communities.

Access Control

eVols allows contributors to limit access to at the collection and the individual item level. However, all contributions must follow UHM's Access Policy.

Search & Retrieval

The eVols submission process allows for the description of each item using a qualified version of the Dublin Core metadata schema. Descriptions are entered into a relational database, which is used by the search engine to retrieve items.

Digital Preservation

  • eVols provides long-term physical storage and management of digital items in a secure, professionally managed repository including standard operating procedures such as backup, mirroring, refreshing media, and disaster recovery.
  • eVols assigns a persistent identifier to each contributed item to ensure it is retrievable far into the future.
  • eVols provides a mechanism for advising content contributors of the preservation support levels they can expect for the files they submit.

Supported Digital Formats & Content Types

eVols accepts all manner of content in a variety of digital formats. Some examples are:

  • Documents, such as articles, preprints, working papers, technical reports, conference papers
  • Books
  • Theses and dissertations
  • Data sets
  • Computer programs
  • Visualizations, simulations, and other models
  • Multimedia publications
  • Bibliographic datasets
  • Images
  • Audio files
  • Video files
  • Learning objects
  • Web pages

The DSpace Platform

eVols uses DSpace to run the repository. Developed jointly by the MIT Libraries and Hewlett-Packard Company, DSpace is an open source software platform for building digital repositories.

The DSpace open source platform is freely available at SourceForge through the BSD license. Institutions around the world use DSpace to store their digital research materials - see which institutions are running DSpace services.

DSpace has an active developer community, with a variety of online resources:

eVols Technical Support

The UHM Library runs and maintains the eVols servers for all UHM Communities. Communities do not have to download the whole system or maintain the eVols server. Users use a web-based interface to save, search, and store data in eVols.

Contact your Community's eVols administrator or write if you have questions about eVols.

Appreciation is given to the University of Oregon and Massachusetts Institute of Technology for providing some of the information on these pages.

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