Sensitivity of media
The sensitivity of media to light and the subsequent fading of the colours in a collection item is one of the factors considered when establishing the acceptable amount of light exposure for a collection item.
The use of the ISO rating, or Blue Wool (BW) Standard, enables a comparison of the fading that occurs to various types of media. BW 1 is the most responsive to light (meaning it fades the quickest); BW 2 is approximately half as responsive as BW1; and so on to BW 8 which is the least responsive. The media used in collections can be broadly grouped using their likely responsiveness to light. For example pristine condition watercolours are categorised as BW1 items. They will fade very quickly when exposed to light.
1 August 2012 - 12:00
From the outset, digital preservation and conservation seem to be two very different professions. This paper explores the idea that both traditional and digital conservators not only have many commonalties but also an invaluable knowledge bank of their own areas of expertise, which should be shared between these seemingly distinct communities. Preservation Services and the Digital Preservation team from the National Library of Australia (NLA) discuss the commonalities between the two professions. Digital preservation is a relatively young and innovative discipline, while conservation has undergone its own phases of growth and innovation to become a profession that is steeped in tried and tested methodologies and techniques. This analysis of the common challenges shared by the Conservation team and the Digital Preservation team at the NLA illustrates the lessons that can be learned and shared between the two. With multiple linkages between digital preservation a
This paper discusses an Australian perspective of digital library economics.
Introduction: definition and scope
In 1998 the Digital Library Federation offered the following definition of digital libraries : Digital libraries are organizations that provide the resources, including the specialized staff, to select, structure, offer intellectual access to, interpret, distribute, preserve the integrity of, and ensure the persistence over time of collections of digital works so that they are readily and economically available for use by a defined community or set of communities .(Council on Library and Information Resources,1998)
This definition emphasises that a digital library, like any library, is more than a mere aggregation of information resources: it is a service which is based on principles of selection, acquisition, access, management and preservation, related to a specific client community (Cathro, 1999). Thus any analysis of the economic aspects of digital libraries wil