id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
8932	Arms, W. Y.; Walter, T. P.	A Simulation Model for Purchasing Duplicate Copies in a Library	1974-06-01	11	.pdf	application/pdf	3994	277	66	For example, the expression ignores use of a book within the library, and identifies demand in a As these various factors seemed too complex to derive usable mathematical results, we decided to use computer simulation of the book circulation. As these various factors seemed too complex to derive usable mathematical results, we decided to use computer simulation of the book circulation. A separate study was made for a small sample of books, to compare the percentage time on shelf estimated by the simulation with the actual time for which a copy was available, found by looking at the shelves. predicted and observed percentage time on shelf which could be corrected by changing the value of the within-library use parameter to The number of loans of each copy of each book during the period was noted and the library staff carried out a thorough check 	./cache/8932.pdf	./txt/8932.txt