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This note discusses, with examples, correct ways of determining the average growth rates of phenomena that grow exponentially, such as typical library collections. Library expenditures also tend to grow exponentially; and because analysis of their growth rates is complicated by the effects of currency inflation, methods of compensating for inflation in the analysis are presented.  相似文献   

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This article describes a computer program developed by the author to extract subject-level usage and inventory data from Aleph system reports and to track usage trends by subject over time. Two implementations of the program are detailed, at the Institute of Fine Arts Library and the East Asian collection at Bobst Library, both at New York University. Use of the program in processing inventory, in-house usage, and circulation data in greater detail is demonstrated. Information about usage trends within major Library of Congress subject areas provides collection managers with more precise data for use in a variety of collection management decisions. The article shows that the program offers significant new functionality for collection assessment.  相似文献   

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