Conservation, Preservation, and Digitization

Conservation, Preservation, and Digitization

Considerable attention has been focused recently on the problems of conservation and preservation of library materials. Particularly daunting are the scale of the problems and the enormous ongoing investment that will be required to address them. Currently proposed approaches include extensive microfilming of material, deacidification, and other repair measures. It is proposed that digital tech...

Measuring Content Quality In A Preservation Repository: Hathitrust And Large-Scale Book Digitization

As mechanisms emerge to certify the trustworthiness of digital preservation repositories, no systematic efforts have been devoted to assessing the quality and usefulness of the preserved content itself. With generous support from the Andrew W. Mellon Foundation, the University of Michigan’s School of Information, in close collaboration with the University of Michigan Library and HathiTrust, is ...

Wilderness preservation and biodiversity conservation - keeping divergent goals distinct

C onservation biology, as developed and practiced in the United States, has the explicit aim of maintaining and encouraging biodiversity. The term “biodiversity” was introduced in 1986 by Walter Rosen as a shorthand for “biological diversity.” Although Rosen’s original intention was quite precise, biodiversity, according to a survey of US conservation biologists, has become a fashionable scient...

Postponement, conservation and preservation of strong normalization for generalized reduction

Shape Preservation during Digitization: Tight Bounds Based on the Morphing Distance

We define strong r-similarity and the morphing distance to bound geometric distortions between shapes of equal topology. We then derive a necessary and sufficient condition for a set and its digitizations to be r-similar, regardless of the sampling grid. We also extend these results to certain gray scale images. Our findings are steps towards a theory of shape digitization for real optical syst...