The definition of digital resources used here is explored in section 2.1. In summary, Internet resources, CD-ROMs and the Library’s own digitised materials are considered.
A large number of effects associated with digital resources might affect reading rooms. We have to consider resources referred to from within the Library, resources referred to from outside the Library, free and chargeable resources, and so on. For example:
Clearly several factors need to be considered. The five factors which could have an effect are:
The possible natures of these factors is shown in the following table in Figure 1:
Source Content Format* Usage Access Digitised BL Metadata Text or data Fact finding From within material (catalogue record) reading room Free Internet Data (monograph, Low-resolution Studying Remote from resource serial etc) image reading room Chargeable High-resolution Browsing Internet** image resource Offline resource Sound (eg CD-ROM) Motion
*This definition of Format is intentionally not academically rigorous, Rather, it is
chosen to identify the formats which are, or which could be, significantly different
in terms of their effects on reading rooms.
**Strictly, commercial network services which are not presented through the Internet
should be included here; the term Internet is used for simplicity.
Figure 1: Full Model of Digital Resource Attributes
Each combination of the different factors’ natures is different. For example,
To arrive at well-reasoned quantitative estimates, each combination should be examined separately. By simple combinatorial arithmetic, there are 4 x 2 x 5 x 3 x 2 = 240 combinations. The effects of each of these 240 potential scenarios should be considered carefully, and this potentially for each reading room. In each case, there would be consideration of:
etc. It is not appropriate to attempt an exercise on this scale in the present study, so a simpler representation is called for.
The model defined by the table above can be simplified by aggregating the combinations, discarding less significant aggregations until the number of scenarios is manageable. The basis for the aggregation and discarding is qualitative, applying an understanding of the likely nature of the effects, as informed by interviews conducted during the study. The final aggregation used consists of six scenarios:
These are conveniently represented in the form of the graphical model in Figure 2:
Figure 2: Simplified Model of Digital Resource Attributes
In this model, the divisions between BL/non-BL resources and usage inside/outside of reading rooms is represented in a table in the centre of the model. Access to catalogues extends to within and outside the Library, and this is represented accordingly by a separate rectangle on the left. CD-ROMs used in reading rooms present different characteristics, and so are represented separately in a symbol on the right.
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