We describe the design, implementation, and evaluation of a comparative book reader that supports the scholarly activities deemed most important by cultural history scholars. A filmstrip metaphor allows rapid access to various components of the books. Parallel filmstrips allow comparison among multiple copies of the same title to fill in for missing pages or other maladies, and to study page-level annotations to help in interpreting the content. Playing the filmstrips allow the scholar to search for or discover items of interest by watching the pages of the books flow past. The need for a canonical book and possibly multiple "Frankenbooks" is described and the implementation is given. The architecture of the tool and the programming methodology are also described. The results of a discount usability study are presented along with lessons learned and future directions for improving the comparative book reader.
This paper presents results of a case study that addresses many issues surrounding the difficult task of preservation in a digital library. We focus on a subset of these issues as they apply to the preservation of scholarly articles encoded in current web standards. We also describe the two common preservation mechanisms, emulation and migration, as well as our selection of the latter for our particular case. Finally, we compare two approaches to migration, automatic and manual, and discuss their strengths and weaknesses in our context. We show that consistent use of open standards leads to more efficient migration processes and issue a "call to arms" to the digital preservation community to ensure that scholarly material currently on the web can be preserved for future generations.
This paper describes a method to analyze the history of hypermedia collections. We gathered information about documents using the Internet Archive's Wayback Machine. Analysis focused on two key aspects: centroid migration and content migration. The objective is to understand how collections change over time. We developed and applied a tool called HHAT, or Hypertext History Analysis Tool, that visualizes centroids and content migration over time.
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