id	sid	tid	token	lemma	pos
8932	1	1	A	a	DT
8932	1	2	Simulation	Simulation	NNP
8932	1	3	Model	model	NN
8932	1	4	for	for	IN
8932	1	5	Purchasing	purchase	VBG
8932	1	6	Duplicate	Duplicate	NNP
8932	1	7	Copies	Copies	NNPS
8932	1	8	in	in	IN
8932	1	9	a	a	DT
8932	1	10	Library	Library	NNP
8932	1	11	W.	W.	NNP
8932	1	12	Y.	Y.	NNP
8932	2	1	ARMS	arm	NNS
8932	2	2	:	:	:
8932	2	3	The	The	NNP
8932	2	4	Open	Open	NNP
8932	2	5	University	University	NNP
8932	2	6	,	,	,
8932	2	7	and	and	CC
8932	2	8	T.	T.	NNP
8932	2	9	P.	P.	NNP
8932	2	10	WALTER	WALTER	NNP
8932	2	11	:	:	:
8932	2	12	Unilever	Unilever	NNP
8932	2	13	Limited	Limited	NNP
8932	2	14	.	.	.
8932	3	1	At	at	IN
8932	3	2	the	the	DT
8932	3	3	time	time	NN
8932	3	4	this	this	DT
8932	3	5	study	study	NN
8932	3	6	was	be	VBD
8932	3	7	undertaken	undertake	VBN
8932	3	8	the	the	DT
8932	3	9	authors	author	NNS
8932	3	10	were	be	VBD
8932	3	11	at	at	IN
8932	3	12	the	the	DT
8932	3	13	University	University	NNP
8932	3	14	of	of	IN
8932	3	15	Sussex	Sussex	NNP
8932	3	16	.	.	.
8932	4	1	73	73	CD
8932	4	2	P1'ovision	p1'ovision	NN
8932	4	3	of	of	IN
8932	4	4	duplicate	duplicate	JJ
8932	4	5	copies	copy	NNS
8932	4	6	in	in	IN
8932	4	7	a	a	DT
8932	4	8	lib1'at'Y	lib1'at'y	NN
8932	4	9	requires	require	VBZ
8932	4	10	knowledge	knowledge	NN
8932	4	11	of	of	IN
8932	4	12	the	the	DT
8932	4	13	de-	de-	NN
8932	4	14	mand	mand	NNP
8932	4	15	fo1	fo1	NNP
8932	4	16	'	'	''
8932	4	17	each	each	DT
8932	4	18	title	title	NN
8932	4	19	.	.	.
8932	5	1	Since	since	IN
8932	5	2	di1'ect	di1'ect	NFP
8932	5	3	measu1'ement	measu1'ement	NN
8932	5	4	of	of	IN
8932	5	5	demand	demand	NN
8932	5	6	is	be	VBZ
8932	5	7	difficult	difficult	JJ
8932	5	8	a	a	DT
8932	5	9	sim-	sim-	NNP
8932	5	10	ulation	ulation	NN
8932	5	11	model	model	NN
8932	5	12	has	have	VBZ
8932	5	13	been	be	VBN
8932	5	14	developed	develop	VBN
8932	5	15	to	to	TO
8932	5	16	estimate	estimate	VB
8932	5	17	the	the	DT
8932	5	18	demand	demand	NN
8932	5	19	for	for	IN
8932	5	20	a	a	DT
8932	5	21	book	book	NN
8932	5	22	f1'om	f1'om	VBZ
8932	5	23	the	the	DT
8932	5	24	number	number	NN
8932	5	25	of	of	IN
8932	5	26	times	time	NNS
8932	5	27	it	-PRON-	PRP
8932	5	28	has	have	VBZ
8932	5	29	been	be	VBN
8932	5	30	loaned	loan	VBN
8932	5	31	and	and	CC
8932	5	32	hence	hence	RB
8932	5	33	to	to	IN
8932	5	34	dete1·mine	dete1·mine	NNP
8932	5	35	the	the	DT
8932	5	36	number	number	NN
8932	5	37	of	of	IN
8932	5	38	copies	copy	NNS
8932	5	39	required	require	VBN
8932	5	40	.	.	.
8932	6	1	Special	special	JJ
8932	6	2	attention	attention	NN
8932	6	3	has	have	VBZ
8932	6	4	been	be	VBN
8932	6	5	given	give	VBN
8932	6	6	to	to	TO
8932	6	7	accurate	accurate	JJ
8932	6	8	calibration	calibration	NN
8932	6	9	of	of	IN
8932	6	10	the	the	DT
8932	6	11	model	model	NN
8932	6	12	.	.	.
8932	7	1	INTRODUCTION	INTRODUCTION	NNP
8932	7	2	A	a	DT
8932	7	3	common	common	JJ
8932	7	4	difficulty	difficulty	NN
8932	7	5	in	in	IN
8932	7	6	library	library	JJ
8932	7	7	management	management	NN
8932	7	8	is	be	VBZ
8932	7	9	deciding	decide	VBG
8932	7	10	when	when	WRB
8932	7	11	to	to	TO
8932	7	12	buy	buy	VB
8932	7	13	dupli-	dupli-	NN
8932	7	14	cate	cate	NN
8932	7	15	copies	copy	NNS
8932	7	16	of	of	IN
8932	7	17	a	a	DT
8932	7	18	given	give	VBN
8932	7	19	book	book	NN
8932	7	20	and	and	CC
8932	7	21	how	how	WRB
8932	7	22	many	many	JJ
8932	7	23	copies	copy	NNS
8932	7	24	to	to	TO
8932	7	25	buy	buy	VB
8932	7	26	.	.	.
8932	8	1	A	a	DT
8932	8	2	typical	typical	JJ
8932	8	3	research	research	NN
8932	8	4	library	library	NN
8932	8	5	has	have	VBZ
8932	8	6	several	several	JJ
8932	8	7	hundred	hundred	CD
8932	8	8	thousand	thousand	CD
8932	8	9	different	different	JJ
8932	8	10	works	work	NNS
8932	8	11	;	;	:
8932	8	12	many	many	JJ
8932	8	13	are	be	VBP
8932	8	14	lightly	lightly	RB
8932	8	15	used	use	VBN
8932	8	16	but	but	CC
8932	8	17	all	all	DT
8932	8	18	are	be	VBP
8932	8	19	potential	potential	JJ
8932	8	20	candidates	candidate	NNS
8932	8	21	for	for	IN
8932	8	22	duplication	duplication	NN
8932	8	23	.	.	.
8932	9	1	The	the	DT
8932	9	2	problem	problem	NN
8932	9	3	which	which	WDT
8932	9	4	we	-PRON-	PRP
8932	9	5	faced	face	VBD
8932	9	6	at	at	IN
8932	9	7	Sussex	Sussex	NNP
8932	9	8	University	University	NNP
8932	9	9	was	be	VBD
8932	9	10	how	how	WRB
8932	9	11	to	to	TO
8932	9	12	obtain	obtain	VB
8932	9	13	reliable	reliable	JJ
8932	9	14	forecasts	forecast	NNS
8932	9	15	of	of	IN
8932	9	16	the	the	DT
8932	9	17	demand	demand	NN
8932	9	18	for	for	IN
8932	9	19	each	each	DT
8932	9	20	title	title	NN
8932	9	21	and	and	CC
8932	9	22	to	to	TO
8932	9	23	translate	translate	VB
8932	9	24	this	this	DT
8932	9	25	into	into	IN
8932	9	26	a	a	DT
8932	9	27	purchasing	purchasing	NN
8932	9	28	policy	policy	NN
8932	9	29	.	.	.
8932	10	1	At	at	IN
8932	10	2	present	present	JJ
8932	10	3	Sussex	Sussex	NNP
8932	10	4	spends	spend	NNS
8932	10	5	between	between	IN
8932	10	6	£	£	$
8932	10	7	10,000	10,000	CD
8932	10	8	and	and	CC
8932	10	9	£	£	$
8932	10	10	20,000	20,000	CD
8932	10	11	(	(	-LRB-
8932	10	12	$	$	$
8932	10	13	22,00o-$44,000	22,00o-$44,000	CD
8932	10	14	)	)	-RRB-
8932	10	15	per	per	IN
8932	10	16	year	year	NN
8932	10	17	on	on	IN
8932	10	18	duplicate	duplicate	JJ
8932	10	19	copies	copy	NNS
8932	10	20	,	,	,
8932	10	21	and	and	CC
8932	10	22	as	as	IN
8932	10	23	the	the	DT
8932	10	24	university	university	NN
8932	10	25	grows	grow	VBZ
8932	10	26	this	this	DT
8932	10	27	amount	amount	NN
8932	10	28	is	be	VBZ
8932	10	29	increas-	increas-	NNP
8932	10	30	ing	e	VBG
8932	10	31	steadily	steadily	RB
8932	10	32	.	.	.
8932	11	1	Because	because	IN
8932	11	2	of	of	IN
8932	11	3	the	the	DT
8932	11	4	large	large	JJ
8932	11	5	number	number	NN
8932	11	6	of	of	IN
8932	11	7	books	book	NNS
8932	11	8	in	in	IN
8932	11	9	a	a	DT
8932	11	10	library	library	NN
8932	11	11	relatively	relatively	RB
8932	11	12	little	little	JJ
8932	11	13	data	datum	NNS
8932	11	14	are	be	VBP
8932	11	15	available	available	JJ
8932	11	16	about	about	IN
8932	11	17	each	each	DT
8932	11	18	title	title	NN
8932	11	19	.	.	.
8932	12	1	Records	record	NNS
8932	12	2	are	be	VBP
8932	12	3	kept	keep	VBN
8932	12	4	of	of	IN
8932	12	5	books	book	NNS
8932	12	6	on	on	IN
8932	12	7	loan	loan	NN
8932	12	8	or	or	CC
8932	12	9	re-	re-	RB
8932	12	10	moved	move	VBD
8932	12	11	from	from	IN
8932	12	12	the	the	DT
8932	12	13	library	library	NN
8932	12	14	,	,	,
8932	12	15	but	but	CC
8932	12	16	frequently	frequently	RB
8932	12	17	these	these	DT
8932	12	18	are	be	VBP
8932	12	19	the	the	DT
8932	12	20	only	only	JJ
8932	12	21	routine	routine	JJ
8932	12	22	data	datum	NNS
8932	12	23	col-	col-	NN
8932	12	24	lected	lecte	VBD
8932	12	25	.	.	.
8932	13	1	Few	few	JJ
8932	13	2	large	large	JJ
8932	13	3	libraries	library	NNS
8932	13	4	even	even	RB
8932	13	5	manage	manage	VBP
8932	13	6	inventory	inventory	NN
8932	13	7	checks	check	NNS
8932	13	8	.	.	.
8932	14	1	We	-PRON-	PRP
8932	14	2	therefore	therefore	RB
8932	14	3	looked	look	VBD
8932	14	4	for	for	IN
8932	14	5	a	a	DT
8932	14	6	system	system	NN
8932	14	7	that	that	WDT
8932	14	8	could	could	MD
8932	14	9	be	be	VB
8932	14	10	implemented	implement	VBN
8932	14	11	with	with	IN
8932	14	12	the	the	DT
8932	14	13	minimum	minimum	NN
8932	14	14	of	of	IN
8932	14	15	data	datum	NNS
8932	14	16	collection	collection	NN
8932	14	17	,	,	,
8932	14	18	preferably	preferably	RB
8932	14	19	one	one	CD
8932	14	20	based	base	VBN
8932	14	21	on	on	IN
8932	14	22	existing	exist	VBG
8932	14	23	records	record	NNS
8932	14	24	.	.	.
8932	15	1	FORECASTS	forecast	NNS
8932	15	2	OF	of	IN
8932	15	3	DEMAND	demand	NN
8932	15	4	If	if	IN
8932	15	5	the	the	DT
8932	15	6	demand	demand	NN
8932	15	7	for	for	IN
8932	15	8	a	a	DT
8932	15	9	particular	particular	JJ
8932	15	10	book	book	NN
8932	15	11	is	be	VBZ
8932	15	12	known	know	VBN
8932	15	13	,	,	,
8932	15	14	it	-PRON-	PRP
8932	15	15	is	be	VBZ
8932	15	16	possible	possible	JJ
8932	15	17	,	,	,
8932	15	18	though	though	IN
8932	15	19	not	not	RB
8932	15	20	necessarily	necessarily	RB
8932	15	21	easy	easy	JJ
8932	15	22	,	,	,
8932	15	23	to	to	TO
8932	15	24	determine	determine	VB
8932	15	25	how	how	WRB
8932	15	26	many	many	JJ
8932	15	27	copies	copy	NNS
8932	15	28	of	of	IN
8932	15	29	that	that	DT
8932	15	30	book	book	NN
8932	15	31	are	be	VBP
8932	15	32	needed	need	VBN
8932	15	33	to	to	TO
8932	15	34	achieve	achieve	VB
8932	15	35	a	a	DT
8932	15	36	specified	specify	VBN
8932	15	37	level	level	NN
8932	15	38	of	of	IN
8932	15	39	service	service	NN
8932	15	40	,	,	,
8932	15	41	such	such	JJ
8932	15	42	as	as	IN
8932	15	43	a	a	DT
8932	15	44	copy	copy	NN
8932	15	45	being	be	VBG
8932	15	46	available	available	JJ
8932	15	47	on	on	IN
8932	15	48	80	80	CD
8932	15	49	percent	percent	NN
8932	15	50	of	of	IN
8932	15	51	the	the	DT
8932	15	52	occasions	occasion	NNS
8932	15	53	that	that	WDT
8932	15	54	a	a	DT
8932	15	55	reader	reader	NN
8932	15	56	requires	require	VBZ
8932	15	57	the	the	DT
8932	15	58	book	book	NN
8932	15	59	.	.	.
8932	16	1	Unfortunately	unfortunately	RB
8932	16	2	demand	demand	NN
8932	16	3	can	can	MD
8932	16	4	not	not	RB
8932	16	5	be	be	VB
8932	16	6	measured	measure	VBN
8932	16	7	directly	directly	RB
8932	16	8	,	,	,
8932	16	9	even	even	RB
8932	16	10	retrospectively	retrospectively	RB
8932	16	11	.	.	.
8932	17	1	Records	record	NNS
8932	17	2	of	of	IN
8932	17	3	the	the	DT
8932	17	4	74	74	CD
8932	17	5	Journal	Journal	NNP
8932	17	6	of	of	IN
8932	17	7	Librm·y	Librm·y	NNP
8932	17	8	Automation	Automation	NNP
8932	17	9	Vol	Vol	NNP
8932	17	10	.	.	.
8932	18	1	7/2	7/2	CD
8932	18	2	June	June	NNP
8932	18	3	1974	1974	CD
8932	18	4	number	number	NN
8932	18	5	of	of	IN
8932	18	6	times	time	NNS
8932	18	7	that	that	IN
8932	18	8	a	a	DT
8932	18	9	book	book	NN
8932	18	10	is	be	VBZ
8932	18	11	issued	issue	VBN
8932	18	12	from	from	IN
8932	18	13	the	the	DT
8932	18	14	library	library	NN
8932	18	15	contain	contain	NN
8932	18	16	no	no	DT
8932	18	17	infor-	infor-	JJ
8932	18	18	mation	mation	NN
8932	18	19	about	about	IN
8932	18	20	how	how	WRB
8932	18	21	many	many	JJ
8932	18	22	times	time	NNS
8932	18	23	the	the	DT
8932	18	24	book	book	NN
8932	18	25	was	be	VBD
8932	18	26	used	use	VBN
8932	18	27	within	within	IN
8932	18	28	the	the	DT
8932	18	29	library	library	NN
8932	18	30	,	,	,
8932	18	31	nor	nor	CC
8932	18	32	how	how	WRB
8932	18	33	many	many	JJ
8932	18	34	readers	reader	NNS
8932	18	35	failed	fail	VBD
8932	18	36	to	to	TO
8932	18	37	find	find	VB
8932	18	38	a	a	DT
8932	18	39	copy	copy	NN
8932	18	40	and	and	CC
8932	18	41	went	go	VBD
8932	18	42	away	away	RB
8932	18	43	unsatisfied	unsatisfied	JJ
8932	18	44	.	.	.
8932	19	1	Since	since	IN
8932	19	2	both	both	PDT
8932	19	3	these	these	DT
8932	19	4	factors	factor	NNS
8932	19	5	are	be	VBP
8932	19	6	extremely	extremely	RB
8932	19	7	difficult	difficult	JJ
8932	19	8	to	to	TO
8932	19	9	measure	measure	VB
8932	19	10	,	,	,
8932	19	11	one	one	CD
8932	19	12	of	of	IN
8932	19	13	the	the	DT
8932	19	14	central	central	JJ
8932	19	15	parts	part	NNS
8932	19	16	of	of	IN
8932	19	17	our	-PRON-	PRP$
8932	19	18	work	work	NN
8932	19	19	was	be	VBD
8932	19	20	to	to	TO
8932	19	21	develop	develop	VB
8932	19	22	a	a	DT
8932	19	23	method	method	NN
8932	19	24	of	of	IN
8932	19	25	estimating	estimate	VBG
8932	19	26	them	-PRON-	PRP
8932	19	27	from	from	IN
8932	19	28	data	datum	NNS
8932	19	29	readily	readily	RB
8932	19	30	available	available	JJ
8932	19	31	.	.	.
8932	20	1	To	to	TO
8932	20	2	forecast	forecast	VB
8932	20	3	demand	demand	NN
8932	20	4	two	two	CD
8932	20	5	lines	line	NNS
8932	20	6	of	of	IN
8932	20	7	approach	approach	NN
8932	20	8	seemed	seem	VBD
8932	20	9	reasonable	reasonable	JJ
8932	20	10	:	:	:
8932	20	11	subjec-	subjec-	NNP
8932	20	12	tive	tive	JJ
8932	20	13	estimation	estimation	NN
8932	20	14	based	base	VBN
8932	20	15	on	on	IN
8932	20	16	faculty	faculty	NN
8932	20	17	reading	reading	NN
8932	20	18	lists	list	NNS
8932	20	19	;	;	:
8932	20	20	and	and	CC
8932	20	21	forecasts	forecast	NNS
8932	20	22	based	base	VBN
8932	20	23	on	on	IN
8932	20	24	the	the	DT
8932	20	25	number	number	NN
8932	20	26	of	of	IN
8932	20	27	loans	loan	NNS
8932	20	28	in	in	IN
8932	20	29	previous	previous	JJ
8932	20	30	years	year	NNS
8932	20	31	.	.	.
8932	21	1	In	in	IN
8932	21	2	the	the	DT
8932	21	3	past	past	NN
8932	21	4	,	,	,
8932	21	5	Sussex	Sussex	NNP
8932	21	6	Library	Library	NNP
8932	21	7	has	have	VBZ
8932	21	8	made	make	VBN
8932	21	9	extensive	extensive	JJ
8932	21	10	use	use	NN
8932	21	11	of	of	IN
8932	21	12	reading	reading	NN
8932	21	13	lists	list	NNS
8932	21	14	provided	provide	VBN
8932	21	15	by	by	IN
8932	21	16	faculty	faculty	NN
8932	21	17	to	to	TO
8932	21	18	decide	decide	VB
8932	21	19	how	how	WRB
8932	21	20	many	many	JJ
8932	21	21	copies	copy	NNS
8932	21	22	to	to	TO
8932	21	23	buy	buy	VB
8932	21	24	of	of	IN
8932	21	25	each	each	DT
8932	21	26	title	title	NN
8932	21	27	.	.	.
8932	22	1	As	as	IN
8932	22	2	the	the	DT
8932	22	3	books	book	NNS
8932	22	4	most	most	RBS
8932	22	5	in	in	IN
8932	22	6	demand	demand	NN
8932	22	7	are	be	VBP
8932	22	8	those	those	DT
8932	22	9	recom-	recom-	NN
8932	22	10	mended	mend	VBN
8932	22	11	for	for	IN
8932	22	12	undergraduate	undergraduate	JJ
8932	22	13	courses	course	NNS
8932	22	14	this	this	DT
8932	22	15	seemed	seem	VBD
8932	22	16	a	a	DT
8932	22	17	sensible	sensible	JJ
8932	22	18	approach	approach	NN
8932	22	19	,	,	,
8932	22	20	though	though	IN
8932	22	21	the	the	DT
8932	22	22	number	number	NN
8932	22	23	of	of	IN
8932	22	24	copies	copy	NNS
8932	22	25	required	require	VBN
8932	22	26	is	be	VBZ
8932	22	27	not	not	RB
8932	22	28	obvious	obvious	JJ
8932	22	29	even	even	RB
8932	22	30	if	if	IN
8932	22	31	the	the	DT
8932	22	32	demand	demand	NN
8932	22	33	is	be	VBZ
8932	22	34	known	know	VBN
8932	22	35	.	.	.
8932	23	1	Webster	Webster	NNP
8932	23	2	analysed	analyse	VBD
8932	23	3	the	the	DT
8932	23	4	effectiveness	effectiveness	NN
8932	23	5	of	of	IN
8932	23	6	these	these	DT
8932	23	7	lists	list	NNS
8932	23	8	in	in	IN
8932	23	9	predicting	predict	VBG
8932	23	10	de-	de-	RB
8932	23	11	mand	mand	VBP
8932	23	12	for	for	IN
8932	23	13	specific	specific	JJ
8932	23	14	titles	title	NNS
8932	23	15	and	and	CC
8932	23	16	evaluated	evaluate	VBD
8932	23	17	the	the	DT
8932	23	18	purchasing	purchasing	NN
8932	23	19	rule	rule	NN
8932	23	20	being	be	VBG
8932	23	21	used	use	VBN
8932	23	22	,	,	,
8932	23	23	one	one	CD
8932	23	24	copy	copy	NN
8932	23	25	for	for	IN
8932	23	26	every	every	DT
8932	23	27	ten	ten	CD
8932	23	28	students	student	NNS
8932	23	29	taking	take	VBG
8932	23	30	a	a	DT
8932	23	31	course	course	NN
8932	23	32	.	.	.
8932	24	1	1	1	LS
8932	24	2	Restricting	restrict	VBG
8932	24	3	his	-PRON-	PRP$
8932	24	4	attention	attention	NN
8932	24	5	to	to	IN
8932	24	6	books	book	NNS
8932	24	7	known	know	VBN
8932	24	8	to	to	TO
8932	24	9	be	be	VB
8932	24	10	in	in	IN
8932	24	11	demand	demand	NN
8932	24	12	and	and	CC
8932	24	13	marked	mark	VBN
8932	24	14	in	in	IN
8932	24	15	the	the	DT
8932	24	16	catalog	catalog	NN
8932	24	17	,	,	,
8932	24	18	he	-PRON-	PRP
8932	24	19	drew	draw	VBD
8932	24	20	a	a	DT
8932	24	21	ran-	ran-	NN
8932	24	22	dom	dom	NN
8932	24	23	sample	sample	NN
8932	24	24	of	of	IN
8932	24	25	673	673	CD
8932	24	26	titles	title	NNS
8932	24	27	,	,	,
8932	24	28	about	about	RB
8932	24	29	4	4	CD
8932	24	30	percent	percent	NN
8932	24	31	of	of	IN
8932	24	32	the	the	DT
8932	24	33	books	book	NNS
8932	24	34	falling	fall	VBG
8932	24	35	into	into	IN
8932	24	36	this	this	DT
8932	24	37	category	category	NN
8932	24	38	.	.	.
8932	25	1	He	-PRON-	PRP
8932	25	2	compared	compare	VBD
8932	25	3	the	the	DT
8932	25	4	number	number	NN
8932	25	5	of	of	IN
8932	25	6	loans	loan	NNS
8932	25	7	of	of	IN
8932	25	8	each	each	DT
8932	25	9	of	of	IN
8932	25	10	these	these	DT
8932	25	11	titles	title	NNS
8932	25	12	over	over	IN
8932	25	13	a	a	DT
8932	25	14	term	term	NN
8932	25	15	·	·	NFP
8932	25	16	with	with	IN
8932	25	17	data	datum	NNS
8932	25	18	from	from	IN
8932	25	19	the	the	DT
8932	25	20	reading	reading	NN
8932	25	21	lists	list	NNS
8932	25	22	supplied	supply	VBN
8932	25	23	at	at	IN
8932	25	24	the	the	DT
8932	25	25	beginning	beginning	NN
8932	25	26	of	of	IN
8932	25	27	the	the	DT
8932	25	28	term	term	NN
8932	25	29	.	.	.
8932	26	1	As	as	IN
8932	26	2	the	the	DT
8932	26	3	library	library	NN
8932	26	4	had	have	VBD
8932	26	5	made	make	VBN
8932	26	6	a	a	DT
8932	26	7	special	special	JJ
8932	26	8	effort	effort	NN
8932	26	9	to	to	TO
8932	26	10	obtain	obtain	VB
8932	26	11	reading	reading	NN
8932	26	12	lists	list	NNS
8932	26	13	for	for	IN
8932	26	14	all	all	DT
8932	26	15	courses	course	NNS
8932	26	16	taught	teach	VBD
8932	26	17	that	that	DT
8932	26	18	term	term	NN
8932	26	19	,	,	,
8932	26	20	he	-PRON-	PRP
8932	26	21	had	have	VBD
8932	26	22	data	datum	NNS
8932	26	23	on	on	IN
8932	26	24	the	the	DT
8932	26	25	number	number	NN
8932	26	26	and	and	CC
8932	26	27	type	type	NN
8932	26	28	of	of	IN
8932	26	29	students	student	NNS
8932	26	30	taking	take	VBG
8932	26	31	each	each	DT
8932	26	32	course	course	NN
8932	26	33	,	,	,
8932	26	34	the	the	DT
8932	26	35	importance	importance	NN
8932	26	36	given	give	VBN
8932	26	37	to	to	IN
8932	26	38	each	each	DT
8932	26	39	text	text	NN
8932	26	40	,	,	,
8932	26	41	and	and	CC
8932	26	42	the	the	DT
8932	26	43	subject	subject	JJ
8932	26	44	areas	area	NNS
8932	26	45	involved	involve	VBN
8932	26	46	.	.	.
8932	27	1	Yet	yet	CC
8932	27	2	despite	despite	IN
8932	27	3	a	a	DT
8932	27	4	thorough	thorough	JJ
8932	27	5	analysis	analysis	NN
8932	27	6	of	of	IN
8932	27	7	these	these	DT
8932	27	8	data	datum	NNS
8932	27	9	Webster	Webster	NNP
8932	27	10	was	be	VBD
8932	27	11	able	able	JJ
8932	27	12	to	to	TO
8932	27	13	find	find	VB
8932	27	14	very	very	RB
8932	27	15	little	little	JJ
8932	27	16	relationship	relationship	NN
8932	27	17	between	between	IN
8932	27	18	observed	observed	JJ
8932	27	19	demand	demand	NN
8932	27	20	and	and	CC
8932	27	21	reading	reading	NN
8932	27	22	list	list	NN
8932	27	23	information	information	NN
8932	27	24	.	.	.
8932	28	1	His	-PRON-	PRP$
8932	28	2	work	work	NN
8932	28	3	shows	show	VBZ
8932	28	4	that	that	DT
8932	28	5	faculty	faculty	NN
8932	28	6	at	at	IN
8932	28	7	the	the	DT
8932	28	8	university	university	NN
8932	28	9	have	have	VBP
8932	28	10	remark-	remark-	VBN
8932	28	11	ably	ably	RB
8932	28	12	little	little	JJ
8932	28	13	knowledge	knowledge	NN
8932	28	14	of	of	IN
8932	28	15	the	the	DT
8932	28	16	books	book	NNS
8932	28	17	that	that	WDT
8932	28	18	their	-PRON-	PRP$
8932	28	19	students	student	NNS
8932	28	20	read	read	VBD
8932	28	21	.	.	.
8932	29	1	In	in	IN
8932	29	2	the	the	DT
8932	29	3	sample	sample	NN
8932	29	4	some	some	DT
8932	29	5	books	book	NNS
8932	29	6	strongly	strongly	RB
8932	29	7	recommended	recommend	VBD
8932	29	8	to	to	IN
8932	29	9	large	large	JJ
8932	29	10	groups	group	NNS
8932	29	11	of	of	IN
8932	29	12	students	student	NNS
8932	29	13	were	be	VBD
8932	29	14	hardly	hardly	RB
8932	29	15	used	use	VBN
8932	29	16	and	and	CC
8932	29	17	some	some	DT
8932	29	18	of	of	IN
8932	29	19	the	the	DT
8932	29	20	most	most	RBS
8932	29	21	heavily	heavily	RB
8932	29	22	used	use	VBN
8932	29	23	works	work	NNS
8932	29	24	appeared	appear	VBD
8932	29	25	on	on	IN
8932	29	26	no	no	DT
8932	29	27	reading	reading	NN
8932	29	28	list	list	NN
8932	29	29	.	.	.
8932	30	1	The	the	DT
8932	30	2	results	result	NNS
8932	30	3	of	of	IN
8932	30	4	this	this	DT
8932	30	5	study	study	NN
8932	30	6	are	be	VBP
8932	30	7	fascinating	fascinating	JJ
8932	30	8	from	from	IN
8932	30	9	an	an	DT
8932	30	10	educational	educational	JJ
8932	30	11	viewpoint	viewpoint	NN
8932	30	12	but	but	CC
8932	30	13	less	less	RBR
8932	30	14	satisfying	satisfying	JJ
8932	30	15	as	as	IN
8932	30	16	operational	operational	JJ
8932	30	17	research	research	NN
8932	30	18	.	.	.
8932	31	1	The	the	DT
8932	31	2	failure	failure	NN
8932	31	3	of	of	IN
8932	31	4	this	this	DT
8932	31	5	..	..	NFP
8932	31	6	approach	approach	NN
8932	31	7	led	lead	VBD
8932	31	8	us	-PRON-	PRP
8932	31	9	to	to	IN
8932	31	10	predicting	predict	VBG
8932	31	11	demand	demand	NN
8932	31	12	from	from	IN
8932	31	13	records	record	NNS
8932	31	14	of	of	IN
8932	31	15	the	the	DT
8932	31	16	number	number	NN
8932	31	17	of	of	IN
8932	31	18	past	past	JJ
8932	31	19	loans	loan	NNS
8932	31	20	.	.	.
8932	32	1	This	this	DT
8932	32	2	divides	divide	VBZ
8932	32	3	into	into	IN
8932	32	4	two	two	CD
8932	32	5	parts	part	NNS
8932	32	6	:	:	:
8932	32	7	using	use	VBG
8932	32	8	the	the	DT
8932	32	9	num-	num-	NNP
8932	32	10	ber	ber	NN
8932	32	11	of	of	IN
8932	32	12	loans	loan	NNS
8932	32	13	over	over	IN
8932	32	14	a	a	DT
8932	32	15	period	period	NN
8932	32	16	to	to	TO
8932	32	17	estimate	estimate	VB
8932	32	18	what	what	WP
8932	32	19	the	the	DT
8932	32	20	total	total	JJ
8932	32	21	demand	demand	NN
8932	32	22	was	be	VBD
8932	32	23	during	during	IN
8932	32	24	that	that	DT
8932	32	25	period	period	NN
8932	32	26	;	;	:
8932	32	27	and	and	CC
8932	32	28	using	use	VBG
8932	32	29	this	this	DT
8932	32	30	estimate	estimate	NN
8932	32	31	of	of	IN
8932	32	32	the	the	DT
8932	32	33	demand	demand	NN
8932	32	34	in	in	IN
8932	32	35	one	one	CD
8932	32	36	period	period	NN
8932	32	37	to	to	IN
8932	32	38	fore-	fore-	JJ
8932	32	39	cast	cast	VBN
8932	32	40	the	the	DT
8932	32	41	demand	demand	NN
8932	32	42	in	in	IN
8932	32	43	another	another	DT
8932	32	44	.	.	.
8932	33	1	Various	various	JJ
8932	33	2	evidence	evidence	NN
8932	33	3	suggests	suggest	VBZ
8932	33	4	that	that	IN
8932	33	5	the	the	DT
8932	33	6	latter	latter	NN
8932	33	7	is	be	VBZ
8932	33	8	a	a	DT
8932	33	9	sensible	sensible	JJ
8932	33	10	thing	thing	NN
8932	33	11	to	to	TO
8932	33	12	do	do	VB
8932	33	13	.	.	.
8932	34	1	The	the	DT
8932	34	2	main	main	JJ
8932	34	3	demand	demand	NN
8932	34	4	for	for	IN
8932	34	5	heavily	heavily	RB
8932	34	6	used	use	VBN
8932	34	7	books	book	NNS
8932	34	8	comes	come	VBZ
8932	34	9	from	from	IN
8932	34	10	undergraduate	undergraduate	JJ
8932	34	11	courses	course	NNS
8932	34	12	.	.	.
8932	35	1	Most	Most	JJS
8932	35	2	faculty	faculty	NN
8932	35	3	are	be	VBP
8932	35	4	loyal	loyal	JJ
8932	35	5	in	in	IN
8932	35	6	their	-PRON-	PRP$
8932	35	7	reading	reading	NN
8932	35	8	habits	habit	NNS
8932	35	9	,	,	,
8932	35	10	rec-	rec-	NN
8932	35	11	ommending	ommende	VBG
8932	35	12	books	book	NNS
8932	35	13	they	-PRON-	PRP
8932	35	14	know	know	VBP
8932	35	15	rather	rather	RB
8932	35	16	than	than	IN
8932	35	17	new	new	JJ
8932	35	18	ones	one	NNS
8932	35	19	,	,	,
8932	35	20	and	and	CC
8932	35	21	each	each	DT
8932	35	22	course	course	NN
8932	35	23	tends	tend	VBZ
8932	35	24	to	to	TO
8932	35	25	be	be	VB
8932	35	26	repeated	repeat	VBN
8932	35	27	year	year	NN
8932	35	28	after	after	IN
8932	35	29	year	year	NN
8932	35	30	with	with	IN
8932	35	31	a	a	DT
8932	35	32	syllabus	syllabus	NN
8932	35	33	that	that	WDT
8932	35	34	changes	change	VBZ
8932	35	35	only	only	RB
8932	35	36	gradually	gradually	RB
8932	35	37	.	.	.
8932	36	1	The	the	DT
8932	36	2	use	use	NN
8932	36	3	of	of	IN
8932	36	4	past	past	JJ
8932	36	5	circulation	circulation	NN
8932	36	6	to	to	TO
8932	36	7	forecast	forecast	VB
8932	36	8	future	future	JJ
8932	36	9	use	use	NN
8932	36	10	is	be	VBZ
8932	36	11	fundamental	fundamental	JJ
8932	36	12	to	to	IN
8932	36	13	a	a	DT
8932	36	14	Markov	Markov	NNP
8932	36	15	model	model	NN
8932	36	16	of	of	IN
8932	36	17	book	book	NN
8932	36	18	usage	usage	NN
8932	36	19	developed	develop	VBN
8932	36	20	by	by	IN
8932	36	21	Morse	Morse	NNP
8932	36	22	and	and	CC
8932	36	23	Elston	Elston	NNP
8932	36	24	and	and	CC
8932	36	25	tested	test	VBN
8932	36	26	with	with	IN
8932	36	27	data	datum	NNS
8932	36	28	from	from	IN
8932	36	29	the	the	DT
8932	36	30	M.I.T.	M.I.T.	NNP
8932	37	1	Engineering	Engineering	NNP
8932	37	2	Library	Library	NNP
8932	37	3	.	.	.
8932	38	1	2	2	CD
8932	38	2	For	for	IN
8932	38	3	our	-PRON-	PRP$
8932	38	4	work	work	NN
8932	38	5	we	-PRON-	PRP
8932	38	6	have	have	VBP
8932	38	7	used	use	VBN
8932	38	8	the	the	DT
8932	38	9	number	number	NN
8932	38	10	of	of	IN
8932	38	11	loans	loan	NNS
8932	38	12	in	in	IN
8932	38	13	a	a	DT
8932	38	14	given	give	VBN
8932	38	15	term	term	NN
8932	38	16	to	to	TO
8932	38	17	predict	predict	VB
8932	38	18	the	the	DT
8932	38	19	demand	demand	NN
8932	38	20	in	in	IN
8932	38	21	the	the	DT
8932	38	22	cor-	cor-	NN
8932	38	23	responding	respond	VBG
8932	38	24	term	term	NN
8932	38	25	a	a	DT
8932	38	26	year	year	NN
8932	38	27	later	later	RB
8932	38	28	.	.	.
8932	39	1	Simulation	simulation	NN
8932	39	2	M	M	NNP
8932	39	3	odelj	odelj	JJ
8932	39	4	ARMS	ARMS	NNP
8932	39	5	and	and	CC
8932	39	6	WALTER	WALTER	NNP
8932	39	7	75	75	CD
8932	39	8	Estimating	estimate	VBG
8932	39	9	the	the	DT
8932	39	10	total	total	JJ
8932	39	11	demand	demand	NN
8932	39	12	in	in	IN
8932	39	13	a	a	DT
8932	39	14	period	period	NN
8932	39	15	from	from	IN
8932	39	16	the	the	DT
8932	39	17	number	number	NN
8932	39	18	of	of	IN
8932	39	19	loans	loan	NNS
8932	39	20	in	in	IN
8932	39	21	that	that	DT
8932	39	22	period	period	NN
8932	39	23	is	be	VBZ
8932	39	24	more	more	RBR
8932	39	25	difficult	difficult	JJ
8932	39	26	.	.	.
8932	40	1	This	this	DT
8932	40	2	requires	require	VBZ
8932	40	3	a	a	DT
8932	40	4	model	model	NN
8932	40	5	of	of	IN
8932	40	6	the	the	DT
8932	40	7	circulation	circulation	NN
8932	40	8	sys-	sys-	NNP
8932	40	9	tem	tem	NNP
8932	40	10	.	.	.
8932	41	1	MATHEMATICAL	MATHEMATICAL	NNP
8932	41	2	APPROACH	APPROACH	NNP
8932	41	3	Several	several	JJ
8932	41	4	attempts	attempt	NNS
8932	41	5	have	have	VBP
8932	41	6	been	be	VBN
8932	41	7	made	make	VBN
8932	41	8	to	to	TO
8932	41	9	apply	apply	VB
8932	41	10	the	the	DT
8932	41	11	methods	method	NNS
8932	41	12	of	of	IN
8932	41	13	inventory	inventory	NN
8932	41	14	con-	con-	NN
8932	41	15	trol	trol	NN
8932	41	16	or	or	CC
8932	41	17	queueing	queue	VBG
8932	41	18	theory	theory	NN
8932	41	19	to	to	IN
8932	41	20	the	the	DT
8932	41	21	problem	problem	NN
8932	41	22	of	of	IN
8932	41	23	buying	buying	NN
8932	41	24	duplicates	duplicate	NNS
8932	41	25	.	.	.
8932	42	1	For	for	IN
8932	42	2	example	example	NN
8932	42	3	,	,	,
8932	42	4	Grant	Grant	NNP
8932	42	5	has	have	VBZ
8932	42	6	recently	recently	RB
8932	42	7	described	describe	VBN
8932	42	8	an	an	DT
8932	42	9	operational	operational	JJ
8932	42	10	system	system	NN
8932	42	11	using	use	VBG
8932	42	12	the	the	DT
8932	42	13	simple	simple	JJ
8932	42	14	rule	rule	NN
8932	42	15	that	that	IN
8932	42	16	the	the	DT
8932	42	17	number	number	NN
8932	42	18	of	of	IN
8932	42	19	copies	copy	NNS
8932	42	20	required	require	VBN
8932	42	21	to	to	TO
8932	42	22	satisfy	satisfy	VB
8932	42	23	95	95	CD
8932	42	24	percent	percent	NN
8932	42	25	of	of	IN
8932	42	26	the	the	DT
8932	42	27	demand	demand	NN
8932	42	28	is	be	VBZ
8932	42	29	n	n	JJ
8932	42	30	(	(	-LRB-
8932	42	31	p	p	NN
8932	42	32	,	,	,
8932	42	33	.	.	.
8932	43	1	+	+	SYM
8932	43	2	2cr	2cr	LS
8932	43	3	.	.	.
8932	44	1	)	)	-RRB-
8932	44	2	/t	/t	.
8932	44	3	where	where	WRB
8932	44	4	n	n	DT
8932	44	5	is	be	VBZ
8932	44	6	the	the	DT
8932	44	7	number	number	NN
8932	44	8	of	of	IN
8932	44	9	times	time	NNS
8932	44	10	that	that	IN
8932	44	11	the	the	DT
8932	44	12	book	book	NN
8932	44	13	is	be	VBZ
8932	44	14	issued	issue	VBN
8932	44	15	during	during	IN
8932	44	16	a	a	DT
8932	44	17	period	period	NN
8932	44	18	of	of	IN
8932	44	19	t	t	NN
8932	44	20	days	day	NNS
8932	44	21	and	and	CC
8932	44	22	p,8	p,8	NNS
8932	44	23	and	and	CC
8932	44	24	cr8	cr8	NNS
8932	44	25	are	be	VBP
8932	44	26	the	the	DT
8932	44	27	mean	mean	JJ
8932	44	28	and	and	CC
8932	44	29	standard	standard	JJ
8932	44	30	deviation	deviation	NN
8932	44	31	of	of	IN
8932	44	32	the	the	DT
8932	44	33	time	time	NN
8932	44	34	that	that	WDT
8932	44	35	each	each	DT
8932	44	36	book	book	NN
8932	44	37	is	be	VBZ
8932	44	38	off	off	IN
8932	44	39	the	the	DT
8932	44	40	shelf	shelf	NN
8932	44	41	when	when	WRB
8932	44	42	on	on	IN
8932	44	43	loan	loan	NN
8932	44	44	.	.	.
8932	45	1	3	3	LS
8932	45	2	This	this	DT
8932	45	3	type	type	NN
8932	45	4	of	of	IN
8932	45	5	approach	approach	NN
8932	45	6	has	have	VBZ
8932	45	7	the	the	DT
8932	45	8	advantage	advantage	NN
8932	45	9	of	of	IN
8932	45	10	being	be	VBG
8932	45	11	straightforward	straightforward	JJ
8932	45	12	to	to	TO
8932	45	13	use	use	VB
8932	45	14	.	.	.
8932	46	1	Periodically	periodically	RB
8932	46	2	a	a	DT
8932	46	3	simple	simple	JJ
8932	46	4	computer	computer	NN
8932	46	5	program	program	NN
8932	46	6	analyzes	analyze	VBZ
8932	46	7	the	the	DT
8932	46	8	circulation	circulation	NN
8932	46	9	histo-	histo-	NN
8932	46	10	ry	ry	NN
8932	46	11	of	of	IN
8932	46	12	each	each	DT
8932	46	13	book	book	NN
8932	46	14	in	in	IN
8932	46	15	the	the	DT
8932	46	16	library	library	NN
8932	46	17	and	and	CC
8932	46	18	prints	print	VBZ
8932	46	19	a	a	DT
8932	46	20	list	list	NN
8932	46	21	of	of	IN
8932	46	22	books	book	NNS
8932	46	23	requiring	require	VBG
8932	46	24	duplica-	duplica-	VBN
8932	46	25	tion	tion	NN
8932	46	26	.	.	.
8932	47	1	However	however	RB
8932	47	2	,	,	,
8932	47	3	the	the	DT
8932	47	4	method	method	NN
8932	47	5	suffers	suffer	VBZ
8932	47	6	from	from	IN
8932	47	7	difficulties	difficulty	NNS
8932	47	8	both	both	CC
8932	47	9	mathematical	mathematical	JJ
8932	47	10	and	and	CC
8932	47	11	practical	practical	JJ
8932	47	12	.	.	.
8932	48	1	To	to	TO
8932	48	2	obtain	obtain	VB
8932	48	3	the	the	DT
8932	48	4	simple	simple	JJ
8932	48	5	mathematical	mathematical	JJ
8932	48	6	expression	expression	NN
8932	48	7	given	give	VBN
8932	48	8	above	above	RB
8932	48	9	,	,	,
8932	48	10	sev-	sev-	JJ
8932	48	11	eral	eral	JJ
8932	48	12	simplifying	simplifying	NN
8932	48	13	assumptions	assumption	NNS
8932	48	14	have	have	VBP
8932	48	15	to	to	TO
8932	48	16	be	be	VB
8932	48	17	made	make	VBN
8932	48	18	.	.	.
8932	49	1	For	for	IN
8932	49	2	example	example	NN
8932	49	3	,	,	,
8932	49	4	the	the	DT
8932	49	5	expres-	expres-	NN
8932	49	6	sion	sion	NN
8932	49	7	ignores	ignore	VBZ
8932	49	8	use	use	NN
8932	49	9	of	of	IN
8932	49	10	a	a	DT
8932	49	11	book	book	NN
8932	49	12	within	within	IN
8932	49	13	the	the	DT
8932	49	14	library	library	NN
8932	49	15	,	,	,
8932	49	16	and	and	CC
8932	49	17	identifies	identifie	NNS
8932	49	18	demand	demand	VBP
8932	49	19	in	in	IN
8932	49	20	a	a	DT
8932	49	21	period	period	NN
8932	49	22	with	with	IN
8932	49	23	the	the	DT
8932	49	24	number	number	NN
8932	49	25	of	of	IN
8932	49	26	loans	loan	NNS
8932	49	27	within	within	IN
8932	49	28	that	that	DT
8932	49	29	period	period	NN
8932	49	30	.	.	.
8932	50	1	Practical	practical	JJ
8932	50	2	difficulties	difficulty	NNS
8932	50	3	in	in	IN
8932	50	4	arriving	arrive	VBG
8932	50	5	at	at	IN
8932	50	6	a	a	DT
8932	50	7	more	more	RBR
8932	50	8	exact	exact	JJ
8932	50	9	mathematical	mathematical	JJ
8932	50	10	expression	expression	NN
8932	50	11	are	be	VBP
8932	50	12	discussed	discuss	VBN
8932	50	13	in	in	IN
8932	50	14	the	the	DT
8932	50	15	next	next	JJ
8932	50	16	section	section	NN
8932	50	17	.	.	.
8932	51	1	DIFFICULTIES	difficulty	NNS
8932	51	2	IN	in	IN
8932	51	3	CONSTRUCTING	construct	VBG
8932	51	4	A	a	DT
8932	51	5	MODEL	model	NN
8932	51	6	The	the	DT
8932	51	7	following	follow	VBG
8932	51	8	are	be	VBP
8932	51	9	the	the	DT
8932	51	10	main	main	JJ
8932	51	11	difficulties	difficulty	NNS
8932	51	12	that	that	WDT
8932	51	13	we	-PRON-	PRP
8932	51	14	found	find	VBD
8932	51	15	in	in	IN
8932	51	16	constructing	construct	VBG
8932	51	17	a	a	DT
8932	51	18	model	model	NN
8932	51	19	,	,	,
8932	51	20	either	either	CC
8932	51	21	mathematical	mathematical	JJ
8932	51	22	or	or	CC
8932	51	23	using	use	VBG
8932	51	24	simulation	simulation	NN
8932	51	25	:	:	:
8932	51	26	1	1	LS
8932	51	27	.	.	.
8932	52	1	The	the	DT
8932	52	2	most	most	RBS
8932	52	3	useful	useful	JJ
8932	52	4	measure	measure	NN
8932	52	5	of	of	IN
8932	52	6	the	the	DT
8932	52	7	effectiveness	effectiveness	NN
8932	52	8	of	of	IN
8932	52	9	a	a	DT
8932	52	10	duplication	duplication	NN
8932	52	11	policy	policy	NN
8932	52	12	is	be	VBZ
8932	52	13	satisfaction	satisfaction	NN
8932	52	14	level	level	NN
8932	52	15	,	,	,
8932	52	16	the	the	DT
8932	52	17	proportion	proportion	NN
8932	52	18	of	of	IN
8932	52	19	readers	reader	NNS
8932	52	20	who	who	WP
8932	52	21	on	on	IN
8932	52	22	approaching	approach	VBG
8932	52	23	the	the	DT
8932	52	24	shelves	shelf	NNS
8932	52	25	find	find	VBP
8932	52	26	a	a	DT
8932	52	27	copy	copy	NN
8932	52	28	of	of	IN
8932	52	29	the	the	DT
8932	52	30	book	book	NN
8932	52	31	there	there	RB
8932	52	32	,	,	,
8932	52	33	but	but	CC
8932	52	34	satisfaction	satisfaction	NN
8932	52	35	level	level	NN
8932	52	36	is	be	VBZ
8932	52	37	al-	al-	RB
8932	52	38	most	most	RBS
8932	52	39	impossible	impossible	JJ
8932	52	40	to	to	TO
8932	52	41	measure	measure	VB
8932	52	42	directly	directly	RB
8932	52	43	since	since	IN
8932	52	44	,	,	,
8932	52	45	although	although	IN
8932	52	46	some	some	DT
8932	52	47	unsatisfied	unsatisfied	JJ
8932	52	48	readers	reader	NNS
8932	52	49	ask	ask	VBP
8932	52	50	that	that	IN
8932	52	51	the	the	DT
8932	52	52	book	book	NN
8932	52	53	be	be	VB
8932	52	54	held	hold	VBN
8932	52	55	for	for	IN
8932	52	56	them	-PRON-	PRP
8932	52	57	,	,	,
8932	52	58	most	most	RBS
8932	52	59	go	go	VB
8932	52	60	away	away	RB
8932	52	61	without	without	IN
8932	52	62	comment	comment	NN
8932	52	63	.	.	.
8932	53	1	More	More	JJR
8932	53	2	or	or	CC
8932	53	3	less	less	RBR
8932	53	4	equivalent	equivalent	JJ
8932	53	5	is	be	VBZ
8932	53	6	the	the	DT
8932	53	7	percentage	percentage	NN
8932	53	8	time	time	NN
8932	53	9	on	on	IN
8932	53	10	shelf	shelf	NN
8932	53	11	,	,	,
8932	53	12	the	the	DT
8932	53	13	proportion	proportion	NN
8932	53	14	of	of	IN
8932	53	15	time	time	NN
8932	53	16	that	that	IN
8932	53	17	at	at	RB
8932	53	18	least	least	RBS
8932	53	19	one	one	CD
8932	53	20	copy	copy	NN
8932	53	21	of	of	IN
8932	53	22	the	the	DT
8932	53	23	book	book	NN
8932	53	24	is	be	VBZ
8932	53	25	available	available	JJ
8932	53	26	.	.	.
8932	54	1	This	this	DT
8932	54	2	can	can	MD
8932	54	3	be	be	VB
8932	54	4	measured	measure	VBN
8932	54	5	directly	directly	RB
8932	54	6	,	,	,
8932	54	7	though	though	IN
8932	54	8	a	a	DT
8932	54	9	visit	visit	NN
8932	54	10	to	to	IN
8932	54	11	the	the	DT
8932	54	12	shelves	shelf	NNS
8932	54	13	is	be	VBZ
8932	54	14	needed	need	VBN
8932	54	15	,	,	,
8932	54	16	and	and	CC
8932	54	17	was	be	VBD
8932	54	18	found	find	VBN
8932	54	19	useful	useful	JJ
8932	54	20	in	in	IN
8932	54	21	validating	validate	VBG
8932	54	22	our	-PRON-	PRP$
8932	54	23	model	model	NN
8932	54	24	.	.	.
8932	55	1	If	if	IN
8932	55	2	the	the	DT
8932	55	3	underlying	underlie	VBG
8932	55	4	de-	de-	NN
8932	55	5	mand	mand	NN
8932	55	6	is	be	VBZ
8932	55	7	random	random	JJ
8932	55	8	these	these	DT
8932	55	9	two	two	CD
8932	55	10	measures	measure	NNS
8932	55	11	of	of	IN
8932	55	12	effectiveness	effectiveness	NN
8932	55	13	have	have	VBP
8932	55	14	the	the	DT
8932	55	15	same	same	JJ
8932	55	16	value	value	NN
8932	55	17	.	.	.
8932	56	1	2	2	LS
8932	56	2	.	.	.
8932	57	1	Use	use	NN
8932	57	2	of	of	IN
8932	57	3	books	book	NNS
8932	57	4	within	within	IN
8932	57	5	the	the	DT
8932	57	6	library	library	NN
8932	57	7	is	be	VBZ
8932	57	8	also	also	RB
8932	57	9	difficult	difficult	JJ
8932	57	10	to	to	TO
8932	57	11	measure	measure	VB
8932	57	12	.	.	.
8932	58	1	At	at	IN
8932	58	2	Sussex	Sussex	NNP
8932	58	3	,	,	,
8932	58	4	as	as	IN
8932	58	5	in	in	IN
8932	58	6	most	most	JJS
8932	58	7	libraries	library	NNS
8932	58	8	,	,	,
8932	58	9	data	datum	NNS
8932	58	10	are	be	VBP
8932	58	11	available	available	JJ
8932	58	12	only	only	RB
8932	58	13	on	on	IN
8932	58	14	the	the	DT
8932	58	15	number	number	NN
8932	58	16	of	of	IN
8932	58	17	times	time	NNS
8932	58	18	that	that	IN
8932	58	19	a	a	DT
8932	58	20	book	book	NN
8932	58	21	is	be	VBZ
8932	58	22	lent	lend	VBN
8932	58	23	out	out	IN
8932	58	24	of	of	IN
8932	58	25	the	the	DT
8932	58	26	library	library	NN
8932	58	27	.	.	.
8932	59	1	If	if	IN
8932	59	2	a	a	DT
8932	59	3	reader	reader	NN
8932	59	4	does	do	VBZ
8932	59	5	not	not	RB
8932	59	6	find	find	VB
8932	59	7	a	a	DT
8932	59	8	copy	copy	NN
8932	59	9	on	on	IN
8932	59	10	the	the	DT
8932	59	11	shelves	shelf	NNS
8932	59	12	or	or	CC
8932	59	13	if	if	IN
8932	59	14	he	-PRON-	PRP
8932	59	15	uses	use	VBZ
8932	59	16	a	a	DT
8932	59	17	book	book	NN
8932	59	18	within	within	IN
8932	59	19	the	the	DT
8932	59	20	library	library	NN
8932	59	21	but	but	CC
8932	59	22	does	do	VBZ
8932	59	23	not	not	RB
8932	59	24	take	take	VB
8932	59	25	it	-PRON-	PRP
8932	59	26	away	away	RB
8932	59	27	then	then	RB
8932	59	28	no	no	DT
8932	59	29	record	record	NN
8932	59	30	is	be	VBZ
8932	59	31	generated	generate	VBN
8932	59	32	.	.	.
8932	60	1	Since	since	IN
8932	60	2	various	various	JJ
8932	60	3	studies	study	NNS
8932	60	4	,	,	,
8932	60	5	notably	notably	RB
8932	60	6	that	that	DT
8932	60	7	of	of	IN
8932	60	8	Fussier	Fussier	NNP
8932	60	9	and	and	CC
8932	60	10	Simon	Simon	NNP
8932	60	11	,	,	,
8932	60	12	suggest	suggest	VBP
8932	60	13	that	that	IN
8932	60	14	the	the	DT
8932	60	15	amount	amount	NN
8932	60	16	of	of	IN
8932	60	17	use	use	NN
8932	60	18	within	within	IN
8932	60	19	li-	li-	XX
8932	60	20	76	76	CD
8932	60	21	]	]	-RRB-
8932	60	22	oumal	oumal	JJ
8932	60	23	of	of	IN
8932	60	24	Libmry	Libmry	NNP
8932	60	25	Automation	Automation	NNP
8932	60	26	Vol	Vol	NNP
8932	60	27	.	.	.
8932	61	1	7/2	7/2	CD
8932	61	2	June	June	NNP
8932	61	3	1974	1974	CD
8932	61	4	braries	brarie	NNS
8932	61	5	often	often	RB
8932	61	6	exceeds	exceed	VBZ
8932	61	7	the	the	DT
8932	61	8	number	number	NN
8932	61	9	of	of	IN
8932	61	10	loans	loan	NNS
8932	61	11	recorded	record	VBN
8932	61	12	by	by	IN
8932	61	13	a	a	DT
8932	61	14	factor	factor	NN
8932	61	15	of	of	IN
8932	61	16	three	three	CD
8932	61	17	or	or	CC
8932	61	18	more	more	JJR
8932	61	19	,	,	,
8932	61	20	if	if	IN
8932	61	21	the	the	DT
8932	61	22	number	number	NN
8932	61	23	of	of	IN
8932	61	24	loans	loan	NNS
8932	61	25	is	be	VBZ
8932	61	26	used	use	VBN
8932	61	27	to	to	TO
8932	61	28	estimate	estimate	VB
8932	61	29	demand	demand	VB
8932	61	30	a	a	DT
8932	61	31	reasonable	reasonable	JJ
8932	61	32	knowledge	knowledge	NN
8932	61	33	of	of	IN
8932	61	34	within	within	IN
8932	61	35	-	-	HYPH
8932	61	36	library	library	NN
8932	61	37	use	use	NN
8932	61	38	is	be	VBZ
8932	61	39	essential.4	essential.4	NNP
8932	61	40	3	3	CD
8932	61	41	.	.	.
8932	62	1	The	the	DT
8932	62	2	number	number	NN
8932	62	3	of	of	IN
8932	62	4	copies	copy	NNS
8932	62	5	required	require	VBN
8932	62	6	to	to	TO
8932	62	7	achieve	achieve	VB
8932	62	8	a	a	DT
8932	62	9	specified	specified	JJ
8932	62	10	satisfaction	satisfaction	NN
8932	62	11	lev-	lev-	''
8932	62	12	el	el	NNP
8932	62	13	does	do	VBZ
8932	62	14	not	not	RB
8932	62	15	go	go	VB
8932	62	16	up	up	RP
8932	62	17	linearly	linearly	RB
8932	62	18	with	with	IN
8932	62	19	demand	demand	NN
8932	62	20	.	.	.
8932	63	1	Since	since	IN
8932	63	2	a	a	DT
8932	63	3	reader	reader	NN
8932	63	4	is	be	VBZ
8932	63	5	satisfied	satisfied	JJ
8932	63	6	if	if	IN
8932	63	7	he	-PRON-	PRP
8932	63	8	finds	find	VBZ
8932	63	9	a	a	DT
8932	63	10	single	single	JJ
8932	63	11	copy	copy	NN
8932	63	12	on	on	IN
8932	63	13	the	the	DT
8932	63	14	shelves	shelf	NNS
8932	63	15	,	,	,
8932	63	16	proportionately	proportionately	RB
8932	63	17	fewer	few	JJR
8932	63	18	duplicates	duplicate	NNS
8932	63	19	are	be	VBP
8932	63	20	needed	need	VBN
8932	63	21	of	of	IN
8932	63	22	the	the	DT
8932	63	23	books	book	NNS
8932	63	24	most	most	RBS
8932	63	25	in	in	IN
8932	63	26	demand	demand	NN
8932	63	27	.	.	.
8932	64	1	At	at	IN
8932	64	2	Sussex	Sussex	NNP
8932	64	3	more	more	JJR
8932	64	4	than	than	IN
8932	64	5	twenty	twenty	CD
8932	64	6	copies	copy	NNS
8932	64	7	are	be	VBP
8932	64	8	provided	provide	VBN
8932	64	9	of	of	IN
8932	64	10	several	several	JJ
8932	64	11	books	book	NNS
8932	64	12	and	and	CC
8932	64	13	this	this	DT
8932	64	14	nonlinearity	nonlinearity	NN
8932	64	15	is	be	VBZ
8932	64	16	very	very	RB
8932	64	17	no-	no-	RB
8932	64	18	ticeable	ticeable	JJ
8932	64	19	.	.	.
8932	65	1	4	4	LS
8932	65	2	.	.	.
8932	66	1	The	the	DT
8932	66	2	demand	demand	NN
8932	66	3	for	for	IN
8932	66	4	a	a	DT
8932	66	5	title	title	NN
8932	66	6	is	be	VBZ
8932	66	7	erratic	erratic	JJ
8932	66	8	,	,	,
8932	66	9	changing	change	VBG
8932	66	10	from	from	IN
8932	66	11	term	term	NN
8932	66	12	to	to	IN
8932	66	13	term	term	NN
8932	66	14	,	,	,
8932	66	15	from	from	IN
8932	66	16	week	week	NN
8932	66	17	to	to	IN
8932	66	18	week	week	NN
8932	66	19	,	,	,
8932	66	20	and	and	CC
8932	66	21	from	from	IN
8932	66	22	day	day	NN
8932	66	23	to	to	IN
8932	66	24	day	day	NN
8932	66	25	,	,	,
8932	66	26	even	even	RB
8932	66	27	if	if	IN
8932	66	28	the	the	DT
8932	66	29	mean	mean	JJ
8932	66	30	demand	demand	NN
8932	66	31	is	be	VBZ
8932	66	32	con-	con-	NNP
8932	66	33	stant	stant	JJ
8932	66	34	.	.	.
8932	67	1	Over	over	IN
8932	67	2	a	a	DT
8932	67	3	period	period	NN
8932	67	4	such	such	JJ
8932	67	5	as	as	IN
8932	67	6	a	a	DT
8932	67	7	term	term	NN
8932	67	8	three	three	CD
8932	67	9	different	different	JJ
8932	67	10	effects	effect	NNS
8932	67	11	might	may	MD
8932	67	12	be	be	VB
8932	67	13	ex-	ex-	RB
8932	67	14	pected	pecte	VBN
8932	67	15	:	:	:
8932	67	16	a	a	DT
8932	67	17	background	background	NN
8932	67	18	random	random	JJ
8932	67	19	demand	demand	NN
8932	67	20	independent	independent	JJ
8932	67	21	of	of	IN
8932	67	22	university	university	NN
8932	67	23	courses	course	NNS
8932	67	24	;	;	,
8932	67	25	sudden	sudden	JJ
8932	67	26	peaks	peak	NNS
8932	67	27	when	when	WRB
8932	67	28	a	a	DT
8932	67	29	book	book	NN
8932	67	30	is	be	VBZ
8932	67	31	required	require	VBN
8932	67	32	for	for	IN
8932	67	33	a	a	DT
8932	67	34	course	course	NN
8932	67	35	taken	take	VBN
8932	67	36	by	by	IN
8932	67	37	several	several	JJ
8932	67	38	students	student	NNS
8932	67	39	;	;	:
8932	67	40	and	and	CC
8932	67	41	feedback	feedback	NN
8932	67	42	caused	cause	VBN
8932	67	43	by	by	IN
8932	67	44	previously	previously	RB
8932	67	45	unsatisfied	unsatisfied	JJ
8932	67	46	read-	read-	NNP
8932	67	47	ers	ers	NNP
8932	67	48	returning	return	VBG
8932	67	49	.	.	.
8932	68	1	5	5	CD
8932	68	2	.	.	.
8932	69	1	The	the	DT
8932	69	2	circulation	circulation	NN
8932	69	3	of	of	IN
8932	69	4	books	book	NNS
8932	69	5	is	be	VBZ
8932	69	6	surprisingly	surprisingly	RB
8932	69	7	complicated	complicated	JJ
8932	69	8	.	.	.
8932	70	1	At	at	IN
8932	70	2	Sussex	Sussex	NNP
8932	70	3	some	some	DT
8932	70	4	books	book	NNS
8932	70	5	are	be	VBP
8932	70	6	designated	designate	VBN
8932	70	7	short	short	JJ
8932	70	8	term	term	NN
8932	70	9	loan	loan	NN
8932	70	10	and	and	CC
8932	70	11	can	can	MD
8932	70	12	be	be	VB
8932	70	13	borrowed	borrow	VBN
8932	70	14	for	for	IN
8932	70	15	up	up	IN
8932	70	16	to	to	TO
8932	70	17	four	four	CD
8932	70	18	days	day	NNS
8932	70	19	only	only	RB
8932	70	20	;	;	:
8932	70	21	the	the	DT
8932	70	22	remainder	remainder	NN
8932	70	23	are	be	VBP
8932	70	24	long	long	JJ
8932	70	25	term	term	NN
8932	70	26	loan	loan	NN
8932	70	27	books	book	NNS
8932	70	28	and	and	CC
8932	70	29	can	can	MD
8932	70	30	be	be	VB
8932	70	31	borrowed	borrow	VBN
8932	70	32	for	for	IN
8932	70	33	up	up	IN
8932	70	34	to	to	TO
8932	70	35	six	six	CD
8932	70	36	weeks	week	NNS
8932	70	37	.	.	.
8932	71	1	Circulation	circulation	NN
8932	71	2	data	datum	NNS
8932	71	3	show	show	VBP
8932	71	4	that	that	IN
8932	71	5	the	the	DT
8932	71	6	time	time	NN
8932	71	7	for	for	IN
8932	71	8	which	which	WDT
8932	71	9	a	a	DT
8932	71	10	book	book	NN
8932	71	11	is	be	VBZ
8932	71	12	off	off	IN
8932	71	13	the	the	DT
8932	71	14	shelf	shelf	NN
8932	71	15	is	be	VBZ
8932	71	16	not	not	RB
8932	71	17	the	the	DT
8932	71	18	same	same	JJ
8932	71	19	as	as	IN
8932	71	20	the	the	DT
8932	71	21	period	period	NN
8932	71	22	for	for	IN
8932	71	23	which	which	WDT
8932	71	24	it	-PRON-	PRP
8932	71	25	is	be	VBZ
8932	71	26	lent	lend	VBN
8932	71	27	,	,	,
8932	71	28	but	but	CC
8932	71	29	has	have	VBZ
8932	71	30	a	a	DT
8932	71	31	heavily	heavily	RB
8932	71	32	skewed	skewed	JJ
8932	71	33	distribution	distribution	NN
8932	71	34	.	.	.
8932	72	1	Few	few	JJ
8932	72	2	books	book	NNS
8932	72	3	are	be	VBP
8932	72	4	returned	return	VBN
8932	72	5	until	until	IN
8932	72	6	near	near	IN
8932	72	7	the	the	DT
8932	72	8	due	due	JJ
8932	72	9	date	date	NN
8932	72	10	;	;	:
8932	72	11	just	just	RB
8932	72	12	before	before	IN
8932	72	13	the	the	DT
8932	72	14	book	book	NN
8932	72	15	is	be	VBZ
8932	72	16	due	due	JJ
8932	72	17	back	back	RB
8932	72	18	there	there	EX
8932	72	19	is	be	VBZ
8932	72	20	a	a	DT
8932	72	21	peak	peak	NN
8932	72	22	when	when	WRB
8932	72	23	most	most	JJS
8932	72	24	books	book	NNS
8932	72	25	are	be	VBP
8932	72	26	returned	return	VBN
8932	72	27	but	but	CC
8932	72	28	many	many	JJ
8932	72	29	become	become	VBP
8932	72	30	over-	over-	NN
8932	72	31	due	due	JJ
8932	72	32	and	and	CC
8932	72	33	the	the	DT
8932	72	34	tail	tail	NN
8932	72	35	of	of	IN
8932	72	36	the	the	DT
8932	72	37	distribution	distribution	NN
8932	72	38	dies	die	VBZ
8932	72	39	away	away	RB
8932	72	40	slowly	slowly	RB
8932	72	41	.	.	.
8932	73	1	SIMULATION	SIMULATION	NNP
8932	73	2	As	as	IN
8932	73	3	these	these	DT
8932	73	4	various	various	JJ
8932	73	5	factors	factor	NNS
8932	73	6	seemed	seem	VBD
8932	73	7	too	too	RB
8932	73	8	complex	complex	JJ
8932	73	9	to	to	TO
8932	73	10	derive	derive	VB
8932	73	11	usable	usable	JJ
8932	73	12	mathe-	mathe-	NN
8932	73	13	matical	matical	JJ
8932	73	14	results	result	NNS
8932	73	15	,	,	,
8932	73	16	we	-PRON-	PRP
8932	73	17	decided	decide	VBD
8932	73	18	to	to	TO
8932	73	19	use	use	VB
8932	73	20	computer	computer	NN
8932	73	21	simulation	simulation	NN
8932	73	22	of	of	IN
8932	73	23	the	the	DT
8932	73	24	book	book	NN
8932	73	25	circula-	circula-	XX
8932	73	26	tion	tion	NN
8932	73	27	.	.	.
8932	74	1	Simulation	simulation	NN
8932	74	2	of	of	IN
8932	74	3	book	book	NN
8932	74	4	circulation	circulation	NN
8932	74	5	is	be	VBZ
8932	74	6	not	not	RB
8932	74	7	new	new	JJ
8932	74	8	.	.	.
8932	75	1	In	in	IN
8932	75	2	particular	particular	JJ
8932	75	3	it	-PRON-	PRP
8932	75	4	has	have	VBZ
8932	75	5	been	be	VBN
8932	75	6	used	use	VBN
8932	75	7	at	at	IN
8932	75	8	Lancaster	Lancaster	NNP
8932	75	9	University	University	NNP
8932	75	10	by	by	IN
8932	75	11	Mackenzie	Mackenzie	NNP
8932	75	12	et	et	FW
8932	75	13	al	al	NNP
8932	75	14	.	.	.
8932	76	1	to	to	TO
8932	76	2	decide	decide	VB
8932	76	3	loan	loan	NN
8932	76	4	periods.5	periods.5	NFP
8932	76	5	Their	-PRON-	PRP$
8932	76	6	report	report	NN
8932	76	7	includes	include	VBZ
8932	76	8	a	a	DT
8932	76	9	good	good	JJ
8932	76	10	description	description	NN
8932	76	11	of	of	IN
8932	76	12	the	the	DT
8932	76	13	general	general	JJ
8932	76	14	approach	approach	NN
8932	76	15	.	.	.
8932	77	1	The	the	DT
8932	77	2	object	object	NN
8932	77	3	of	of	IN
8932	77	4	our	-PRON-	PRP$
8932	77	5	simulation	simulation	NN
8932	77	6	was	be	VBD
8932	77	7	to	to	TO
8932	77	8	model	model	VB
8932	77	9	the	the	DT
8932	77	10	circulation	circulation	NN
8932	77	11	process	process	NN
8932	77	12	so	so	IN
8932	77	13	that	that	IN
8932	77	14	we	-PRON-	PRP
8932	77	15	could	could	MD
8932	77	16	study	study	VB
8932	77	17	the	the	DT
8932	77	18	relationship	relationship	NN
8932	77	19	between	between	IN
8932	77	20	three	three	CD
8932	77	21	groups	group	NNS
8932	77	22	of	of	IN
8932	77	23	parameters	parameter	NNS
8932	77	24	:	:	:
8932	77	25	1	1	LS
8932	77	26	.	.	.
8932	78	1	0	0	CD
8932	78	2	bserved	bserve	VBN
8932	78	3	data	datum	NNS
8932	78	4	Number	number	NN
8932	78	5	of	of	IN
8932	78	6	copies	copy	NNS
8932	78	7	available	available	JJ
8932	78	8	Number	Number	NNP
8932	78	9	of	of	IN
8932	78	10	loans	loan	NNS
8932	78	11	2	2	CD
8932	78	12	.	.	.
8932	79	1	Total	total	JJ
8932	79	2	underlying	underlie	VBG
8932	79	3	demand	demand	NN
8932	79	4	3	3	CD
8932	79	5	.	.	.
8932	80	1	Measures	measure	NNS
8932	80	2	of	of	IN
8932	80	3	effectiveness	effectiveness	NN
8932	80	4	Satisfaction	satisfaction	NN
8932	80	5	of	of	IN
8932	80	6	level	level	NN
8932	80	7	Percentage	percentage	NN
8932	80	8	time	time	NN
8932	80	9	on	on	IN
8932	80	10	shelf	shelf	NN
8932	80	11	.	.	.
8932	81	1	The	the	DT
8932	81	2	results	result	NNS
8932	81	3	obtained	obtain	VBN
8932	81	4	from	from	IN
8932	81	5	any	any	DT
8932	81	6	simulation	simulation	NN
8932	81	7	are	be	VBP
8932	81	8	only	only	RB
8932	81	9	as	as	RB
8932	81	10	accurate	accurate	JJ
8932	81	11	as	as	IN
8932	81	12	the	the	DT
8932	81	13	values	value	NNS
8932	81	14	given	give	VBN
8932	81	15	to	to	IN
8932	81	16	the	the	DT
8932	81	17	variables	variable	NNS
8932	81	18	used	use	VBN
8932	81	19	to	to	TO
8932	81	20	calibrate	calibrate	VB
8932	81	21	the	the	DT
8932	81	22	model	model	NN
8932	81	23	.	.	.
8932	82	1	As	as	IN
8932	82	2	several	several	JJ
8932	82	3	of	of	IN
8932	82	4	these	these	DT
8932	82	5	values	value	NNS
8932	82	6	were	be	VBD
8932	82	7	not	not	RB
8932	82	8	known	know	VBN
8932	82	9	at	at	RB
8932	82	10	all	all	RB
8932	82	11	accurately	accurately	RB
8932	82	12	when	when	WRB
8932	82	13	the	the	DT
8932	82	14	work	work	NN
8932	82	15	was	be	VBD
8932	82	16	begun	begin	VBN
8932	82	17	,	,	,
8932	82	18	special	special	JJ
8932	82	19	efforts	effort	NNS
8932	82	20	were	be	VBD
8932	82	21	put	put	VBN
8932	82	22	into	into	IN
8932	82	23	careful	careful	JJ
8932	82	24	validation	validation	NN
8932	82	25	and	and	CC
8932	82	26	calibration	calibration	NN
8932	82	27	of	of	IN
8932	82	28	the	the	DT
8932	82	29	mod-	mod-	NN
8932	82	30	76	76	CD
8932	82	31	]	]	-RRB-
8932	82	32	oumal	oumal	JJ
8932	82	33	of	of	IN
8932	82	34	Libmry	Libmry	NNP
8932	82	35	Automation	Automation	NNP
8932	82	36	Vol	Vol	NNP
8932	82	37	.	.	.
8932	83	1	7/2	7/2	CD
8932	83	2	June	June	NNP
8932	83	3	1974	1974	CD
8932	83	4	braries	brarie	NNS
8932	83	5	often	often	RB
8932	83	6	exceeds	exceed	VBZ
8932	83	7	the	the	DT
8932	83	8	number	number	NN
8932	83	9	of	of	IN
8932	83	10	loans	loan	NNS
8932	83	11	recorded	record	VBN
8932	83	12	by	by	IN
8932	83	13	a	a	DT
8932	83	14	factor	factor	NN
8932	83	15	of	of	IN
8932	83	16	three	three	CD
8932	83	17	or	or	CC
8932	83	18	more	more	JJR
8932	83	19	,	,	,
8932	83	20	if	if	IN
8932	83	21	the	the	DT
8932	83	22	number	number	NN
8932	83	23	of	of	IN
8932	83	24	loans	loan	NNS
8932	83	25	is	be	VBZ
8932	83	26	used	use	VBN
8932	83	27	to	to	TO
8932	83	28	estimate	estimate	VB
8932	83	29	demand	demand	VB
8932	83	30	a	a	DT
8932	83	31	reasonable	reasonable	JJ
8932	83	32	knowledge	knowledge	NN
8932	83	33	of	of	IN
8932	83	34	within	within	IN
8932	83	35	-	-	HYPH
8932	83	36	library	library	NN
8932	83	37	use	use	NN
8932	83	38	is	be	VBZ
8932	83	39	essentiaJ.4	essentiaJ.4	NNP
8932	83	40	3	3	CD
8932	83	41	.	.	.
8932	84	1	The	the	DT
8932	84	2	number	number	NN
8932	84	3	of	of	IN
8932	84	4	copies	copy	NNS
8932	84	5	required	require	VBN
8932	84	6	to	to	TO
8932	84	7	achieve	achieve	VB
8932	84	8	a	a	DT
8932	84	9	specified	specified	JJ
8932	84	10	satisfaction	satisfaction	NN
8932	84	11	lev-	lev-	''
8932	84	12	el	el	NNP
8932	84	13	does	do	VBZ
8932	84	14	not	not	RB
8932	84	15	go	go	VB
8932	84	16	up	up	RP
8932	84	17	linearly	linearly	RB
8932	84	18	with	with	IN
8932	84	19	demand	demand	NN
8932	84	20	.	.	.
8932	85	1	Since	since	IN
8932	85	2	a	a	DT
8932	85	3	reader	reader	NN
8932	85	4	is	be	VBZ
8932	85	5	satisfied	satisfied	JJ
8932	85	6	if	if	IN
8932	85	7	he	-PRON-	PRP
8932	85	8	finds	find	VBZ
8932	85	9	a	a	DT
8932	85	10	single	single	JJ
8932	85	11	copy	copy	NN
8932	85	12	on	on	IN
8932	85	13	the	the	DT
8932	85	14	shelves	shelf	NNS
8932	85	15	,	,	,
8932	85	16	proportionately	proportionately	RB
8932	85	17	fewer	few	JJR
8932	85	18	duplicates	duplicate	NNS
8932	85	19	are	be	VBP
8932	85	20	needed	need	VBN
8932	85	21	of	of	IN
8932	85	22	the	the	DT
8932	85	23	books	book	NNS
8932	85	24	most	most	RBS
8932	85	25	in	in	IN
8932	85	26	demand	demand	NN
8932	85	27	.	.	.
8932	86	1	At	at	IN
8932	86	2	Sussex	Sussex	NNP
8932	86	3	more	more	JJR
8932	86	4	than	than	IN
8932	86	5	twenty	twenty	CD
8932	86	6	copies	copy	NNS
8932	86	7	are	be	VBP
8932	86	8	provided	provide	VBN
8932	86	9	of	of	IN
8932	86	10	several	several	JJ
8932	86	11	books	book	NNS
8932	86	12	and	and	CC
8932	86	13	this	this	DT
8932	86	14	nonlinearity	nonlinearity	NN
8932	86	15	is	be	VBZ
8932	86	16	very	very	RB
8932	86	17	no-	no-	RB
8932	86	18	ticeable	ticeable	JJ
8932	86	19	.	.	.
8932	87	1	4	4	LS
8932	87	2	.	.	.
8932	88	1	The	the	DT
8932	88	2	demand	demand	NN
8932	88	3	for	for	IN
8932	88	4	a	a	DT
8932	88	5	title	title	NN
8932	88	6	is	be	VBZ
8932	88	7	erratic	erratic	JJ
8932	88	8	,	,	,
8932	88	9	changing	change	VBG
8932	88	10	from	from	IN
8932	88	11	term	term	NN
8932	88	12	to	to	IN
8932	88	13	term	term	NN
8932	88	14	,	,	,
8932	88	15	from	from	IN
8932	88	16	week	week	NN
8932	88	17	to	to	IN
8932	88	18	week	week	NN
8932	88	19	,	,	,
8932	88	20	and	and	CC
8932	88	21	from	from	IN
8932	88	22	day	day	NN
8932	88	23	to	to	IN
8932	88	24	day	day	NN
8932	88	25	,	,	,
8932	88	26	even	even	RB
8932	88	27	if	if	IN
8932	88	28	the	the	DT
8932	88	29	mean	mean	JJ
8932	88	30	demand	demand	NN
8932	88	31	is	be	VBZ
8932	88	32	con-	con-	NNP
8932	88	33	stant	stant	JJ
8932	88	34	.	.	.
8932	89	1	Over	over	IN
8932	89	2	a	a	DT
8932	89	3	period	period	NN
8932	89	4	such	such	JJ
8932	89	5	as	as	IN
8932	89	6	a	a	DT
8932	89	7	term	term	NN
8932	89	8	three	three	CD
8932	89	9	different	different	JJ
8932	89	10	effects	effect	NNS
8932	89	11	might	may	MD
8932	89	12	be	be	VB
8932	89	13	ex-	ex-	RB
8932	89	14	pected	pecte	VBN
8932	89	15	:	:	:
8932	89	16	a	a	DT
8932	89	17	background	background	NN
8932	89	18	random	random	JJ
8932	89	19	demand	demand	NN
8932	89	20	independent	independent	JJ
8932	89	21	of	of	IN
8932	89	22	university	university	NN
8932	89	23	courses	course	NNS
8932	89	24	;	;	,
8932	89	25	sudden	sudden	JJ
8932	89	26	peaks	peak	NNS
8932	89	27	when	when	WRB
8932	89	28	a	a	DT
8932	89	29	book	book	NN
8932	89	30	is	be	VBZ
8932	89	31	required	require	VBN
8932	89	32	for	for	IN
8932	89	33	a	a	DT
8932	89	34	course	course	NN
8932	89	35	taken	take	VBN
8932	89	36	by	by	IN
8932	89	37	several	several	JJ
8932	89	38	students	student	NNS
8932	89	39	;	;	:
8932	89	40	and	and	CC
8932	89	41	feedback	feedback	NN
8932	89	42	caused	cause	VBN
8932	89	43	by	by	IN
8932	89	44	previously	previously	RB
8932	89	45	unsatisfied	unsatisfied	JJ
8932	89	46	read-	read-	NNP
8932	89	47	ers	ers	NNP
8932	89	48	returning	return	VBG
8932	89	49	.	.	.
8932	90	1	5	5	CD
8932	90	2	.	.	.
8932	91	1	The	the	DT
8932	91	2	circulation	circulation	NN
8932	91	3	of	of	IN
8932	91	4	books	book	NNS
8932	91	5	is	be	VBZ
8932	91	6	surprisingly	surprisingly	RB
8932	91	7	complicated	complicated	JJ
8932	91	8	.	.	.
8932	92	1	At	at	IN
8932	92	2	Sussex	Sussex	NNP
8932	92	3	some	some	DT
8932	92	4	books	book	NNS
8932	92	5	are	be	VBP
8932	92	6	designated	designate	VBN
8932	92	7	short	short	JJ
8932	92	8	term	term	NN
8932	92	9	loan	loan	NN
8932	92	10	and	and	CC
8932	92	11	can	can	MD
8932	92	12	be	be	VB
8932	92	13	borrowed	borrow	VBN
8932	92	14	for	for	IN
8932	92	15	up	up	IN
8932	92	16	to	to	TO
8932	92	17	four	four	CD
8932	92	18	days	day	NNS
8932	92	19	only	only	RB
8932	92	20	;	;	:
8932	92	21	the	the	DT
8932	92	22	remainder	remainder	NN
8932	92	23	are	be	VBP
8932	92	24	long	long	JJ
8932	92	25	term	term	NN
8932	92	26	loan	loan	NN
8932	92	27	books	book	NNS
8932	92	28	and	and	CC
8932	92	29	can	can	MD
8932	92	30	be	be	VB
8932	92	31	borrowed	borrow	VBN
8932	92	32	for	for	IN
8932	92	33	up	up	IN
8932	92	34	to	to	TO
8932	92	35	six	six	CD
8932	92	36	weeks	week	NNS
8932	92	37	.	.	.
8932	93	1	Circulation	circulation	NN
8932	93	2	data	datum	NNS
8932	93	3	show	show	VBP
8932	93	4	that	that	IN
8932	93	5	the	the	DT
8932	93	6	time	time	NN
8932	93	7	for	for	IN
8932	93	8	which	which	WDT
8932	93	9	a	a	DT
8932	93	10	book	book	NN
8932	93	11	is	be	VBZ
8932	93	12	off	off	IN
8932	93	13	the	the	DT
8932	93	14	shelf	shelf	NN
8932	93	15	is	be	VBZ
8932	93	16	not	not	RB
8932	93	17	the	the	DT
8932	93	18	same	same	JJ
8932	93	19	as	as	IN
8932	93	20	the	the	DT
8932	93	21	period	period	NN
8932	93	22	for	for	IN
8932	93	23	which	which	WDT
8932	93	24	it	-PRON-	PRP
8932	93	25	is	be	VBZ
8932	93	26	lent	lend	VBN
8932	93	27	,	,	,
8932	93	28	but	but	CC
8932	93	29	has	have	VBZ
8932	93	30	a	a	DT
8932	93	31	heavily	heavily	RB
8932	93	32	skewed	skewed	JJ
8932	93	33	distribution	distribution	NN
8932	93	34	.	.	.
8932	94	1	Few	few	JJ
8932	94	2	books	book	NNS
8932	94	3	are	be	VBP
8932	94	4	returned	return	VBN
8932	94	5	until	until	IN
8932	94	6	near	near	IN
8932	94	7	the	the	DT
8932	94	8	due	due	JJ
8932	94	9	date	date	NN
8932	94	10	;	;	:
8932	94	11	just	just	RB
8932	94	12	before	before	IN
8932	94	13	the	the	DT
8932	94	14	book	book	NN
8932	94	15	is	be	VBZ
8932	94	16	due	due	JJ
8932	94	17	back	back	RB
8932	94	18	there	there	EX
8932	94	19	is	be	VBZ
8932	94	20	a	a	DT
8932	94	21	peak	peak	NN
8932	94	22	when	when	WRB
8932	94	23	most	most	JJS
8932	94	24	books	book	NNS
8932	94	25	are	be	VBP
8932	94	26	returned	return	VBN
8932	94	27	but	but	CC
8932	94	28	many	many	JJ
8932	94	29	become	become	VBP
8932	94	30	over-	over-	NN
8932	94	31	due	due	JJ
8932	94	32	and	and	CC
8932	94	33	the	the	DT
8932	94	34	tail	tail	NN
8932	94	35	of	of	IN
8932	94	36	the	the	DT
8932	94	37	distribution	distribution	NN
8932	94	38	dies	die	VBZ
8932	94	39	away	away	RB
8932	94	40	slowly	slowly	RB
8932	94	41	.	.	.
8932	95	1	SIMULATION	SIMULATION	NNP
8932	95	2	As	as	IN
8932	95	3	these	these	DT
8932	95	4	various	various	JJ
8932	95	5	factors	factor	NNS
8932	95	6	seemed	seem	VBD
8932	95	7	too	too	RB
8932	95	8	complex	complex	JJ
8932	95	9	to	to	TO
8932	95	10	derive	derive	VB
8932	95	11	usable	usable	JJ
8932	95	12	mathe-	mathe-	NN
8932	95	13	matical	matical	JJ
8932	95	14	results	result	NNS
8932	95	15	,	,	,
8932	95	16	we	-PRON-	PRP
8932	95	17	decided	decide	VBD
8932	95	18	to	to	TO
8932	95	19	use	use	VB
8932	95	20	computer	computer	NN
8932	95	21	simulation	simulation	NN
8932	95	22	of	of	IN
8932	95	23	the	the	DT
8932	95	24	book	book	NN
8932	95	25	circula-	circula-	XX
8932	95	26	tion	tion	NN
8932	95	27	.	.	.
8932	96	1	Simulation	simulation	NN
8932	96	2	of	of	IN
8932	96	3	book	book	NN
8932	96	4	circulation	circulation	NN
8932	96	5	is	be	VBZ
8932	96	6	not	not	RB
8932	96	7	new	new	JJ
8932	96	8	.	.	.
8932	97	1	In	in	IN
8932	97	2	particular	particular	JJ
8932	97	3	it	-PRON-	PRP
8932	97	4	has	have	VBZ
8932	97	5	been	be	VBN
8932	97	6	used	use	VBN
8932	97	7	at	at	IN
8932	97	8	Lancaster	Lancaster	NNP
8932	97	9	University	University	NNP
8932	97	10	by	by	IN
8932	97	11	Mackenzie	Mackenzie	NNP
8932	97	12	et	et	FW
8932	97	13	al	al	NNP
8932	97	14	.	.	.
8932	98	1	to	to	TO
8932	98	2	decide	decide	VB
8932	98	3	loan	loan	NN
8932	98	4	periods.5	periods.5	NFP
8932	98	5	Their	-PRON-	PRP$
8932	98	6	report	report	NN
8932	98	7	includes	include	VBZ
8932	98	8	a	a	DT
8932	98	9	good	good	JJ
8932	98	10	description	description	NN
8932	98	11	of	of	IN
8932	98	12	the	the	DT
8932	98	13	general	general	JJ
8932	98	14	approach	approach	NN
8932	98	15	.	.	.
8932	99	1	The	the	DT
8932	99	2	object	object	NN
8932	99	3	of	of	IN
8932	99	4	our	-PRON-	PRP$
8932	99	5	simulation	simulation	NN
8932	99	6	was	be	VBD
8932	99	7	to	to	TO
8932	99	8	model	model	VB
8932	99	9	the	the	DT
8932	99	10	circulation	circulation	NN
8932	99	11	process	process	NN
8932	99	12	so	so	IN
8932	99	13	that	that	IN
8932	99	14	we	-PRON-	PRP
8932	99	15	could	could	MD
8932	99	16	study	study	VB
8932	99	17	the	the	DT
8932	99	18	relationship	relationship	NN
8932	99	19	between	between	IN
8932	99	20	three	three	CD
8932	99	21	groups	group	NNS
8932	99	22	of	of	IN
8932	99	23	parameters	parameter	NNS
8932	99	24	:	:	:
8932	99	25	1	1	LS
8932	99	26	.	.	.
8932	100	1	0	0	CD
8932	100	2	bserved	bserve	VBN
8932	100	3	data	datum	NNS
8932	100	4	Number	number	NN
8932	100	5	of	of	IN
8932	100	6	copies	copy	NNS
8932	100	7	available	available	JJ
8932	100	8	Number	Number	NNP
8932	100	9	of	of	IN
8932	100	10	loans	loan	NNS
8932	100	11	2	2	CD
8932	100	12	.	.	.
8932	101	1	Total	total	JJ
8932	101	2	underlying	underlie	VBG
8932	101	3	demand	demand	NN
8932	101	4	3	3	CD
8932	101	5	.	.	.
8932	102	1	Measures	measure	NNS
8932	102	2	of	of	IN
8932	102	3	effectiveness	effectiveness	NN
8932	102	4	Satisfaction	satisfaction	NN
8932	102	5	of	of	IN
8932	102	6	level	level	NN
8932	102	7	Percentage	percentage	NN
8932	102	8	time	time	NN
8932	102	9	on	on	IN
8932	102	10	shelf	shelf	NN
8932	102	11	.	.	.
8932	103	1	The	the	DT
8932	103	2	results	result	NNS
8932	103	3	obtained	obtain	VBN
8932	103	4	from	from	IN
8932	103	5	any	any	DT
8932	103	6	simulation	simulation	NN
8932	103	7	are	be	VBP
8932	103	8	only	only	RB
8932	103	9	as	as	RB
8932	103	10	accurate	accurate	JJ
8932	103	11	as	as	IN
8932	103	12	the	the	DT
8932	103	13	values	value	NNS
8932	103	14	given	give	VBN
8932	103	15	to	to	IN
8932	103	16	the	the	DT
8932	103	17	variables	variable	NNS
8932	103	18	used	use	VBN
8932	103	19	to	to	TO
8932	103	20	calibrate	calibrate	VB
8932	103	21	the	the	DT
8932	103	22	model	model	NN
8932	103	23	.	.	.
8932	104	1	As	as	IN
8932	104	2	several	several	JJ
8932	104	3	of	of	IN
8932	104	4	these	these	DT
8932	104	5	values	value	NNS
8932	104	6	were	be	VBD
8932	104	7	not	not	RB
8932	104	8	known	know	VBN
8932	104	9	at	at	RB
8932	104	10	all	all	RB
8932	104	11	accurately	accurately	RB
8932	104	12	when	when	WRB
8932	104	13	the	the	DT
8932	104	14	work	work	NN
8932	104	15	was	be	VBD
8932	104	16	begun	begin	VBN
8932	104	17	,	,	,
8932	104	18	special	special	JJ
8932	104	19	efforts	effort	NNS
8932	104	20	were	be	VBD
8932	104	21	put	put	VBN
8932	104	22	into	into	IN
8932	104	23	careful	careful	JJ
8932	104	24	validation	validation	NN
8932	104	25	and	and	CC
8932	104	26	calibration	calibration	NN
8932	104	27	of	of	IN
8932	104	28	the	the	DT
8932	104	29	mod-	mod-	NN
8932	104	30	Simulation	Simulation	NNP
8932	104	31	Model/	model/	CD
8932	104	32	ARMS	ARMS	NNP
8932	104	33	and	and	CC
8932	104	34	WALTER	WALTER	NNP
8932	104	35	77	77	CD
8932	104	36	el	el	NNP
8932	104	37	.	.	.
8932	105	1	A	a	DT
8932	105	2	separate	separate	JJ
8932	105	3	study	study	NN
8932	105	4	was	be	VBD
8932	105	5	made	make	VBN
8932	105	6	for	for	IN
8932	105	7	a	a	DT
8932	105	8	small	small	JJ
8932	105	9	sample	sample	NN
8932	105	10	of	of	IN
8932	105	11	books	book	NNS
8932	105	12	,	,	,
8932	105	13	to	to	IN
8932	105	14	com-	com-	NN
8932	105	15	pare	pare	VB
8932	105	16	the	the	DT
8932	105	17	percentage	percentage	NN
8932	105	18	time	time	NN
8932	105	19	on	on	IN
8932	105	20	shelf	shelf	NN
8932	105	21	estimated	estimate	VBN
8932	105	22	by	by	IN
8932	105	23	the	the	DT
8932	105	24	simulation	simulation	NN
8932	105	25	with	with	IN
8932	105	26	the	the	DT
8932	105	27	ac-	ac-	RB
8932	105	28	tual	tual	JJ
8932	105	29	time	time	NN
8932	105	30	for	for	IN
8932	105	31	which	which	WDT
8932	105	32	a	a	DT
8932	105	33	copy	copy	NN
8932	105	34	was	be	VBD
8932	105	35	available	available	JJ
8932	105	36	,	,	,
8932	105	37	found	find	VBN
8932	105	38	by	by	IN
8932	105	39	looking	look	VBG
8932	105	40	at	at	IN
8932	105	41	the	the	DT
8932	105	42	shelves	shelf	NNS
8932	105	43	.	.	.
8932	106	1	The	the	DT
8932	106	2	results	result	NNS
8932	106	3	of	of	IN
8932	106	4	this	this	DT
8932	106	5	study	study	NN
8932	106	6	were	be	VBD
8932	106	7	used	use	VBN
8932	106	8	to	to	TO
8932	106	9	check	check	VB
8932	106	10	the	the	DT
8932	106	11	amount	amount	NN
8932	106	12	of	of	IN
8932	106	13	use	use	NN
8932	106	14	within	within	IN
8932	106	15	the	the	DT
8932	106	16	library	library	NN
8932	106	17	.	.	.
8932	107	1	By	by	IN
8932	107	2	this	this	DT
8932	107	3	means	mean	VBZ
8932	107	4	we	-PRON-	PRP
8932	107	5	were	be	VBD
8932	107	6	able	able	JJ
8932	107	7	to	to	TO
8932	107	8	verify	verify	VB
8932	107	9	the	the	DT
8932	107	10	simulation	simulation	NN
8932	107	11	model	model	NN
8932	107	12	and	and	CC
8932	107	13	calibrate	calibrate	VB
8932	107	14	it	-PRON-	PRP
8932	107	15	to	to	IN
8932	107	16	a	a	DT
8932	107	17	highly	highly	RB
8932	107	18	satisfactory	satisfactory	JJ
8932	107	19	level	level	NN
8932	107	20	of	of	IN
8932	107	21	accuracy	accuracy	NN
8932	107	22	.	.	.
8932	108	1	DESCRIPTION	description	NN
8932	108	2	OF	of	IN
8932	108	3	PROGRAM	PROGRAM	NNP
8932	108	4	The	the	DT
8932	108	5	basic	basic	JJ
8932	108	6	layout	layout	NN
8932	108	7	of	of	IN
8932	108	8	the	the	DT
8932	108	9	simulation	simulation	NN
8932	108	10	is	be	VBZ
8932	108	11	shown	show	VBN
8932	108	12	in	in	IN
8932	108	13	Figure	Figure	NNP
8932	108	14	1	1	CD
8932	108	15	.	.	.
8932	109	1	.This	.This	NFP
8932	109	2	is	be	VBZ
8932	109	3	a	a	DT
8932	109	4	time	time	NN
8932	109	5	advance	advance	NN
8932	109	6	model	model	NN
8932	109	7	with	with	IN
8932	109	8	a	a	DT
8932	109	9	period	period	NN
8932	109	10	of	of	IN
8932	109	11	one	one	CD
8932	109	12	day	day	NN
8932	109	13	.	.	.
8932	110	1	The	the	DT
8932	110	2	program	program	NN
8932	110	3	has	have	VBZ
8932	110	4	been	be	VBN
8932	110	5	coded	code	VBN
8932	110	6	in	in	IN
8932	110	7	FORTRAN	FORTRAN	NNP
8932	110	8	and	and	CC
8932	110	9	running	run	VBG
8932	110	10	on	on	IN
8932	110	11	the	the	DT
8932	110	12	ICL	ICL	NNP
8932	110	13	1904A	1904A	NNP
8932	110	14	computer	computer	NN
8932	110	15	at	at	IN
8932	110	16	Sussex	Sussex	NNP
8932	110	17	takes	take	VBZ
8932	110	18	about	about	RB
8932	110	19	one	one	CD
8932	110	20	second	second	NN
8932	110	21	of	of	IN
8932	110	22	machine	machine	NN
8932	110	23	time	time	NN
8932	110	24	to	to	TO
8932	110	25	simulate	simulate	VB
8932	110	26	two	two	CD
8932	110	27	years	year	NNS
8932	110	28	.	.	.
8932	111	1	This	this	DT
8932	111	2	fast	fast	JJ
8932	111	3	speed	speed	NN
8932	111	4	has	have	VBZ
8932	111	5	enabled	enable	VBN
8932	111	6	us	-PRON-	PRP
8932	111	7	to	to	TO
8932	111	8	try	try	VB
8932	111	9	a	a	DT
8932	111	10	wide	wide	JJ
8932	111	11	range	range	NN
8932	111	12	of	of	IN
8932	111	13	values	value	NNS
8932	111	14	for	for	IN
8932	111	15	most	most	JJS
8932	111	16	parameters	parameter	NNS
8932	111	17	and	and	CC
8932	111	18	to	to	TO
8932	111	19	experiment	experiment	VB
8932	111	20	with	with	IN
8932	111	21	a	a	DT
8932	111	22	variety	variety	NN
8932	111	23	of	of	IN
8932	111	24	distributions	distribution	NNS
8932	111	25	of	of	IN
8932	111	26	arrival	arrival	NN
8932	111	27	times	time	NNS
8932	111	28	and	and	CC
8932	111	29	book	book	NN
8932	111	30	re-	re-	RB
8932	111	31	turn	turn	VBP
8932	111	32	dates	date	VBZ
8932	111	33	.	.	.
8932	112	1	1	1	LS
8932	112	2	.	.	.
8932	113	1	Satisfaction	satisfaction	NN
8932	113	2	level	level	NN
8932	113	3	At	at	IN
8932	113	4	the	the	DT
8932	113	5	beginning	beginning	NN
8932	113	6	of	of	IN
8932	113	7	each	each	DT
8932	113	8	day	day	NN
8932	113	9	the	the	DT
8932	113	10	number	number	NN
8932	113	11	of	of	IN
8932	113	12	demands	demand	NNS
8932	113	13	for	for	IN
8932	113	14	that	that	DT
8932	113	15	day	day	NN
8932	113	16	is	be	VBZ
8932	113	17	generated	generate	VBN
8932	113	18	.	.	.
8932	114	1	The	the	DT
8932	114	2	satisfaction	satisfaction	NN
8932	114	3	level	level	NN
8932	114	4	is	be	VBZ
8932	114	5	taken	take	VBN
8932	114	6	as	as	IN
8932	114	7	the	the	DT
8932	114	8	proportion	proportion	NN
8932	114	9	of	of	IN
8932	114	10	these	these	DT
8932	114	11	requests	request	NNS
8932	114	12	which	which	WDT
8932	114	13	can	can	MD
8932	114	14	be	be	VB
8932	114	15	satisfied	satisfied	JJ
8932	114	16	from	from	IN
8932	114	17	the	the	DT
8932	114	18	books	book	NNS
8932	114	19	left	leave	VBN
8932	114	20	on	on	IN
8932	114	21	the	the	DT
8932	114	22	shelf	shelf	NN
8932	114	23	from	from	IN
8932	114	24	the	the	DT
8932	114	25	previous	previous	JJ
8932	114	26	day	day	NN
8932	114	27	and	and	CC
8932	114	28	those	those	DT
8932	114	29	returned	return	VBN
8932	114	30	during	during	IN
8932	114	31	the	the	DT
8932	114	32	simulated	simulate	VBN
8932	114	33	day	day	NN
8932	114	34	.	.	.
8932	115	1	2	2	LS
8932	115	2	.	.	.
8932	116	1	Within	within	IN
8932	116	2	-	-	HYPH
8932	116	3	library	library	NN
8932	116	4	use	use	NN
8932	116	5	The	the	DT
8932	116	6	proportion	proportion	NN
8932	116	7	of	of	IN
8932	116	8	use	use	NN
8932	116	9	that	that	WDT
8932	116	10	takes	take	VBZ
8932	116	11	place	place	NN
8932	116	12	within	within	IN
8932	116	13	the	the	DT
8932	116	14	library	library	NN
8932	116	15	was	be	VBD
8932	116	16	a	a	DT
8932	116	17	key	key	JJ
8932	116	18	parameter	parameter	NN
8932	116	19	in	in	IN
8932	116	20	calibrating	calibrate	VBG
8932	116	21	the	the	DT
8932	116	22	model	model	NN
8932	116	23	.	.	.
8932	117	1	The	the	DT
8932	117	2	first	first	JJ
8932	117	3	version	version	NN
8932	117	4	of	of	IN
8932	117	5	the	the	DT
8932	117	6	simula-	simula-	NNP
8932	117	7	tion	tion	NN
8932	117	8	program	program	NN
8932	117	9	assumed	assume	VBD
8932	117	10	a	a	DT
8932	117	11	figure	figure	NN
8932	117	12	of	of	IN
8932	117	13	25	25	CD
8932	117	14	percent	percent	NN
8932	117	15	use	use	NN
8932	117	16	within	within	IN
8932	117	17	the	the	DT
8932	117	18	library	library	NN
8932	117	19	.	.	.
8932	118	1	This	this	DT
8932	118	2	was	be	VBD
8932	118	3	based	base	VBN
8932	118	4	on	on	IN
8932	118	5	a	a	DT
8932	118	6	small	small	JJ
8932	118	7	survey	survey	NN
8932	118	8	of	of	IN
8932	118	9	the	the	DT
8932	118	10	type	type	NN
8932	118	11	of	of	IN
8932	118	12	books	book	NNS
8932	118	13	being	be	VBG
8932	118	14	studied	study	VBN
8932	118	15	,	,	,
8932	118	16	standard	standard	JJ
8932	118	17	texts	text	NNS
8932	118	18	used	use	VBN
8932	118	19	for	for	IN
8932	118	20	undergraduate	undergraduate	JJ
8932	118	21	courses	course	NNS
8932	118	22	.	.	.
8932	119	1	The	the	DT
8932	119	2	weakness	weakness	NN
8932	119	3	of	of	IN
8932	119	4	this	this	DT
8932	119	5	survey	survey	NN
8932	119	6	was	be	VBD
8932	119	7	that	that	IN
8932	119	8	it	-PRON-	PRP
8932	119	9	used	use	VBD
8932	119	10	a	a	DT
8932	119	11	count	count	NN
8932	119	12	of	of	IN
8932	119	13	those	those	DT
8932	119	14	books	book	NNS
8932	119	15	that	that	WDT
8932	119	16	were	be	VBD
8932	119	17	left	leave	VBN
8932	119	18	lying	lie	VBG
8932	119	19	in	in	IN
8932	119	20	the	the	DT
8932	119	21	library	library	NN
8932	119	22	at	at	IN
8932	119	23	the	the	DT
8932	119	24	end	end	NN
8932	119	25	of	of	IN
8932	119	26	the	the	DT
8932	119	27	day	day	NN
8932	119	28	and	and	CC
8932	119	29	did	do	VBD
8932	119	30	not	not	RB
8932	119	31	make	make	VB
8932	119	32	sufficient	sufficient	JJ
8932	119	33	allow-	allow-	JJ
8932	119	34	ance	ance	NN
8932	119	35	for	for	IN
8932	119	36	books	book	NNS
8932	119	37	reshelved	reshelve	VBN
8932	119	38	by	by	IN
8932	119	39	readers	reader	NNS
8932	119	40	or	or	CC
8932	119	41	by	by	IN
8932	119	42	library	library	JJ
8932	119	43	staff	staff	NN
8932	119	44	during	during	IN
8932	119	45	the	the	DT
8932	119	46	day	day	NN
8932	119	47	.	.	.
8932	120	1	The	the	DT
8932	120	2	validation	validation	NN
8932	120	3	experiment	experiment	NN
8932	120	4	showed	show	VBD
8932	120	5	a	a	DT
8932	120	6	consistent	consistent	JJ
8932	120	7	difference	difference	NN
8932	120	8	between	between	IN
8932	120	9	predicted	predict	VBD
8932	120	10	and	and	CC
8932	120	11	observed	observe	VBN
8932	120	12	percentage	percentage	NN
8932	120	13	time	time	NN
8932	120	14	on	on	IN
8932	120	15	shelf	shelf	NN
8932	120	16	which	which	WDT
8932	120	17	could	could	MD
8932	120	18	be	be	VB
8932	120	19	cor-	cor-	RB
8932	120	20	rected	recte	VBN
8932	120	21	by	by	IN
8932	120	22	changing	change	VBG
8932	120	23	the	the	DT
8932	120	24	value	value	NN
8932	120	25	of	of	IN
8932	120	26	the	the	DT
8932	120	27	within	within	IN
8932	120	28	-	-	HYPH
8932	120	29	library	library	NN
8932	120	30	use	use	NN
8932	120	31	parameter	parameter	NN
8932	120	32	to	to	IN
8932	120	33	60	60	CD
8932	120	34	percent	percent	NN
8932	120	35	.	.	.
8932	121	1	3	3	LS
8932	121	2	.	.	.
8932	122	1	Distribution	distribution	NN
8932	122	2	of	of	IN
8932	122	3	demand	demand	NN
8932	122	4	Two	two	CD
8932	122	5	distributions	distribution	NNS
8932	122	6	of	of	IN
8932	122	7	demand	demand	NN
8932	122	8	have	have	VBP
8932	122	9	been	be	VBN
8932	122	10	used	use	VBN
8932	122	11	,	,	,
8932	122	12	Poisson	Poisson	NNP
8932	122	13	arrivals	arrival	NNS
8932	122	14	with	with	IN
8932	122	15	a	a	DT
8932	122	16	specified	specify	VBN
8932	122	17	mean	mean	NN
8932	122	18	,	,	,
8932	122	19	and	and	CC
8932	122	20	a	a	DT
8932	122	21	step	step	NN
8932	122	22	demand	demand	NN
8932	122	23	superimposed	superimpose	VBN
8932	122	24	on	on	IN
8932	122	25	a	a	DT
8932	122	26	Poisson	Poisson	NNP
8932	122	27	pro-	pro-	NN
8932	122	28	cess	cess	NN
8932	122	29	.	.	.
8932	123	1	In	in	IN
8932	123	2	both	both	DT
8932	123	3	cases	case	NNS
8932	123	4	provision	provision	NN
8932	123	5	is	be	VBZ
8932	123	6	made	make	VBN
8932	123	7	for	for	IN
8932	123	8	a	a	DT
8932	123	9	proportion	proportion	NN
8932	123	10	of	of	IN
8932	123	11	unsatisfied	unsatisfied	JJ
8932	123	12	readers	reader	NNS
8932	123	13	to	to	TO
8932	123	14	return	return	VB
8932	123	15	later	later	RB
8932	123	16	.	.	.
8932	124	1	As	as	IN
8932	124	2	the	the	DT
8932	124	3	effect	effect	NN
8932	124	4	of	of	IN
8932	124	5	this	this	DT
8932	124	6	feedback	feedback	NN
8932	124	7	is	be	VBZ
8932	124	8	to	to	TO
8932	124	9	introduce	introduce	VB
8932	124	10	sharp	sharp	JJ
8932	124	11	peaks	peak	NNS
8932	124	12	of	of	IN
8932	124	13	demand	demand	NN
8932	124	14	,	,	,
8932	124	15	the	the	DT
8932	124	16	two	two	CD
8932	124	17	distributions	distribution	NNS
8932	124	18	have	have	VBP
8932	124	19	proved	prove	VBN
8932	124	20	surprising-	surprising-	NN
8932	124	21	ly	ly	XX
8932	124	22	similar	similar	JJ
8932	124	23	in	in	IN
8932	124	24	the	the	DT
8932	124	25	results	result	NNS
8932	124	26	produced	produce	VBN
8932	124	27	and	and	CC
8932	124	28	most	most	JJS
8932	124	29	of	of	IN
8932	124	30	the	the	DT
8932	124	31	runs	run	NNS
8932	124	32	of	of	IN
8932	124	33	the	the	DT
8932	124	34	pro-	pro-	NN
8932	124	35	gram	gram	NN
8932	124	36	have	have	VBP
8932	124	37	been	be	VBN
8932	124	38	done	do	VBN
8932	124	39	with	with	IN
8932	124	40	random	random	JJ
8932	124	41	demand	demand	NN
8932	124	42	.	.	.
8932	125	1	A	a	DT
8932	125	2	recent	recent	JJ
8932	125	3	survey	survey	NN
8932	125	4	showed	show	VBD
8932	125	5	that	that	IN
8932	125	6	69	69	CD
8932	125	7	percent	percent	NN
8932	125	8	of	of	IN
8932	125	9	readers	reader	NNS
8932	125	10	who	who	WP
8932	125	11	fail	fail	VBP
8932	125	12	to	to	TO
8932	125	13	find	find	VB
8932	125	14	a	a	DT
8932	125	15	book	book	NN
8932	125	16	intend	intend	NN
8932	125	17	to	to	TO
8932	125	18	return	return	VB
8932	125	19	,	,	,
8932	125	20	but	but	CC
8932	125	21	we	-PRON-	PRP
8932	125	22	do	do	VBP
8932	125	23	not	not	RB
8932	125	24	know	know	VB
8932	125	25	how	how	WRB
8932	125	26	many	many	JJ
8932	125	27	actually	actually	RB
8932	125	28	come	come	VBP
8932	125	29	back	back	RB
8932	125	30	nor	nor	CC
8932	125	31	what	what	WP
8932	125	32	the	the	DT
8932	125	33	time	time	NN
8932	125	34	interval	interval	NN
8932	125	35	is	be	VBZ
8932	125	36	before	before	IN
8932	125	37	they	-PRON-	PRP
8932	125	38	return	return	VBP
8932	125	39	.	.	.
8932	126	1	6	6	CD
8932	126	2	The	the	DT
8932	126	3	simula-	simula-	NN
8932	126	4	tion	tion	NN
8932	126	5	proved	prove	VBD
8932	126	6	to	to	TO
8932	126	7	be	be	VB
8932	126	8	insensitive	insensitive	JJ
8932	126	9	to	to	IN
8932	126	10	moderate	moderate	JJ
8932	126	11	changes	change	NNS
8932	126	12	of	of	IN
8932	126	13	these	these	DT
8932	126	14	parameters	parameter	NNS
8932	126	15	78	78	CD
8932	126	16	Journal	Journal	NNP
8932	126	17	of	of	IN
8932	126	18	Library	Library	NNP
8932	126	19	Automation	Automation	NNP
8932	126	20	Vol	Vol	NNP
8932	126	21	.	.	.
8932	127	1	7/2	7/2	CD
8932	127	2	June	June	NNP
8932	127	3	1974	1974	CD
8932	127	4	Advance	Advance	NNP
8932	127	5	clock	clock	NN
8932	127	6	one	one	CD
8932	127	7	day	day	NN
8932	127	8	Add	Add	NNP
8932	127	9	returned	return	VBD
8932	127	10	books	book	NNS
8932	127	11	Generate	Generate	NNP
8932	127	12	requests	request	NNS
8932	127	13	Fig	Fig	NNP
8932	127	14	.	.	.
8932	128	1	1	1	LS
8932	128	2	.	.	.
8932	129	1	Outline	outline	JJ
8932	129	2	flowchart	flowchart	NN
8932	129	3	of	of	IN
8932	129	4	simulation	simulation	NN
8932	129	5	program	program	NN
8932	129	6	Generate	Generate	NNP
8932	129	7	:	:	:
8932	129	8	return	return	NN
8932	129	9	date	date	NN
8932	129	10	Generate	Generate	NNP
8932	129	11	return	return	NN
8932	129	12	date	date	NN
8932	129	13	Reader	reader	NN
8932	129	14	return	return	NN
8932	129	15	date	date	NN
8932	129	16	Simulation	simulation	NN
8932	129	17	Model/	model/	CD
8932	129	18	ARMS	ARMS	NNP
8932	129	19	and	and	CC
8932	129	20	WALTER	WALTER	NNP
8932	129	21	79	79	CD
8932	129	22	and	and	CC
8932	129	23	for	for	IN
8932	129	24	most	most	JJS
8932	129	25	runs	run	NNS
8932	129	26	25	25	CD
8932	129	27	percent	percent	NN
8932	129	28	of	of	IN
8932	129	29	unsatisfied	unsatisfied	JJ
8932	129	30	readers	reader	NNS
8932	129	31	were	be	VBD
8932	129	32	deemed	deem	VBN
8932	129	33	to	to	TO
8932	129	34	return	return	VB
8932	129	35	after	after	IN
8932	129	36	a	a	DT
8932	129	37	delay	delay	NN
8932	129	38	which	which	WDT
8932	129	39	averaged	average	VBD
8932	129	40	two	two	CD
8932	129	41	days	day	NNS
8932	129	42	.	.	.
8932	130	1	4	4	LS
8932	130	2	.	.	.
8932	131	1	Period	period	NN
8932	131	2	for	for	IN
8932	131	3	which	which	WDT
8932	131	4	the	the	DT
8932	131	5	book	book	NN
8932	131	6	is	be	VBZ
8932	131	7	off	off	IN
8932	131	8	the	the	DT
8932	131	9	shelf	shelf	NN
8932	131	10	The	the	DT
8932	131	11	simulation	simulation	NN
8932	131	12	allows	allow	VBZ
8932	131	13	for	for	IN
8932	131	14	a	a	DT
8932	131	15	book	book	NN
8932	131	16	to	to	TO
8932	131	17	be	be	VB
8932	131	18	borrowed	borrow	VBN
8932	131	19	within	within	IN
8932	131	20	the	the	DT
8932	131	21	library	library	NN
8932	131	22	,	,	,
8932	131	23	in	in	IN
8932	131	24	which	which	WDT
8932	131	25	case	case	NN
8932	131	26	it	-PRON-	PRP
8932	131	27	is	be	VBZ
8932	131	28	available	available	JJ
8932	131	29	again	again	RB
8932	131	30	the	the	DT
8932	131	31	next	next	JJ
8932	131	32	day	day	NN
8932	131	33	,	,	,
8932	131	34	or	or	CC
8932	131	35	to	to	TO
8932	131	36	be	be	VB
8932	131	37	lent	lend	VBN
8932	131	38	from	from	IN
8932	131	39	the	the	DT
8932	131	40	library	library	NN
8932	131	41	.	.	.
8932	132	1	If	if	IN
8932	132	2	the	the	DT
8932	132	3	book	book	NN
8932	132	4	is	be	VBZ
8932	132	5	lent	lend	VBN
8932	132	6	,	,	,
8932	132	7	the	the	DT
8932	132	8	return	return	NN
8932	132	9	date	date	NN
8932	132	10	is	be	VBZ
8932	132	11	generated	generate	VBN
8932	132	12	from	from	IN
8932	132	13	one	one	CD
8932	132	14	of	of	IN
8932	132	15	two	two	CD
8932	132	16	histograms	histogram	NNS
8932	132	17	which	which	WDT
8932	132	18	respectively	respectively	RB
8932	132	19	refer	refer	VBP
8932	132	20	to	to	IN
8932	132	21	books	book	NNS
8932	132	22	available	available	JJ
8932	132	23	on	on	IN
8932	132	24	short	short	JJ
8932	132	25	and	and	CC
8932	132	26	long	long	JJ
8932	132	27	term	term	NN
8932	132	28	loan	loan	NN
8932	132	29	.	.	.
8932	133	1	These	these	DT
8932	133	2	histograms	histogram	NNS
8932	133	3	were	be	VBD
8932	133	4	derived	derive	VBN
8932	133	5	from	from	IN
8932	133	6	an	an	DT
8932	133	7	analysis	analysis	NN
8932	133	8	of	of	IN
8932	133	9	all	all	DT
8932	133	10	books	book	NNS
8932	133	11	returned	return	VBN
8932	133	12	during	during	IN
8932	133	13	one	one	CD
8932	133	14	week	week	NN
8932	133	15	in	in	IN
8932	133	16	autumn	autumn	NN
8932	133	17	1970	1970	CD
8932	133	18	,	,	,
8932	133	19	modified	modify	VBN
8932	133	20	to	to	TO
8932	133	21	reflect	reflect	VB
8932	133	22	changes	change	NNS
8932	133	23	in	in	IN
8932	133	24	the	the	DT
8932	133	25	circulation	circulation	NN
8932	133	26	system	system	NN
8932	133	27	.	.	.
8932	134	1	VALIDATION	VALIDATION	NNP
8932	134	2	EXPERIMENT	EXPERIMENT	NNP
8932	134	3	Although	although	IN
8932	134	4	the	the	DT
8932	134	5	structure	structure	NN
8932	134	6	of	of	IN
8932	134	7	the	the	DT
8932	134	8	simulation	simulation	NN
8932	134	9	is	be	VBZ
8932	134	10	fairly	fairly	RB
8932	134	11	straightforward	straightforward	JJ
8932	134	12	sev-	sev-	JJ
8932	134	13	eral	eral	JJ
8932	134	14	parameters	parameter	NNS
8932	134	15	used	use	VBN
8932	134	16	in	in	IN
8932	134	17	the	the	DT
8932	134	18	model	model	NN
8932	134	19	have	have	VBP
8932	134	20	been	be	VBN
8932	134	21	estimated	estimate	VBN
8932	134	22	indirectly	indirectly	RB
8932	134	23	.	.	.
8932	135	1	Valida-	Valida-	NNP
8932	135	2	tion	tion	NN
8932	135	3	of	of	IN
8932	135	4	the	the	DT
8932	135	5	model	model	NN
8932	135	6	took	take	VBD
8932	135	7	two	two	CD
8932	135	8	forms	form	NNS
8932	135	9	.	.	.
8932	136	1	Firstly	firstly	RB
8932	136	2	we	-PRON-	PRP
8932	136	3	ran	run	VBD
8932	136	4	the	the	DT
8932	136	5	program	program	NN
8932	136	6	with	with	IN
8932	136	7	a	a	DT
8932	136	8	wide	wide	JJ
8932	136	9	range	range	NN
8932	136	10	of	of	IN
8932	136	11	values	value	NNS
8932	136	12	for	for	IN
8932	136	13	the	the	DT
8932	136	14	main	main	JJ
8932	136	15	parameters	parameter	NNS
8932	136	16	to	to	TO
8932	136	17	see	see	VB
8932	136	18	which	which	WDT
8932	136	19	most	most	JJS
8932	136	20	influence	influence	VBP
8932	136	21	the	the	DT
8932	136	22	results	result	NNS
8932	136	23	.	.	.
8932	137	1	Secondly	secondly	RB
8932	137	2	a	a	DT
8932	137	3	small	small	JJ
8932	137	4	study	study	NN
8932	137	5	was	be	VBD
8932	137	6	set	set	VBN
8932	137	7	up	up	RP
8932	137	8	to	to	TO
8932	137	9	measure	measure	VB
8932	137	10	the	the	DT
8932	137	11	percentage	percentage	NN
8932	137	12	time	time	NN
8932	137	13	on	on	IN
8932	137	14	shelf	shelf	NN
8932	137	15	of	of	IN
8932	137	16	a	a	DT
8932	137	17	number	number	NN
8932	137	18	of	of	IN
8932	137	19	books	book	NNS
8932	137	20	.	.	.
8932	138	1	For	for	IN
8932	138	2	each	each	DT
8932	138	3	book	book	NN
8932	138	4	,	,	,
8932	138	5	the	the	DT
8932	138	6	actual	actual	JJ
8932	138	7	availability	availability	NN
8932	138	8	was	be	VBD
8932	138	9	estimated	estimate	VBN
8932	138	10	by	by	IN
8932	138	11	the	the	DT
8932	138	12	simulation	simulation	NN
8932	138	13	from	from	IN
8932	138	14	the	the	DT
8932	138	15	number	number	NN
8932	138	16	of	of	IN
8932	138	17	loans	loan	NNS
8932	138	18	during	during	IN
8932	138	19	the	the	DT
8932	138	20	same	same	JJ
8932	138	21	period	period	NN
8932	138	22	.	.	.
8932	139	1	Twenty	twenty	CD
8932	139	2	-	-	HYPH
8932	139	3	eight	eight	CD
8932	139	4	books	book	NNS
8932	139	5	known	know	VBN
8932	139	6	to	to	TO
8932	139	7	be	be	VB
8932	139	8	in	in	IN
8932	139	9	heavy	heavy	JJ
8932	139	10	demand	demand	NN
8932	139	11	were	be	VBD
8932	139	12	selected	select	VBN
8932	139	13	,	,	,
8932	139	14	half	half	NN
8932	139	15	in	in	IN
8932	139	16	physics	physics	NN
8932	139	17	and	and	CC
8932	139	18	half	half	NN
8932	139	19	in	in	IN
8932	139	20	sociology	sociology	NN
8932	139	21	.	.	.
8932	140	1	Over	over	IN
8932	140	2	a	a	DT
8932	140	3	period	period	NN
8932	140	4	of	of	IN
8932	140	5	eight	eight	CD
8932	140	6	weeks	week	NNS
8932	140	7	the	the	DT
8932	140	8	shelves	shelf	NNS
8932	140	9	were	be	VBD
8932	140	10	inspected	inspect	VBN
8932	140	11	once	once	RB
8932	140	12	per	per	IN
8932	140	13	day	day	NN
8932	140	14	,	,	,
8932	140	15	at	at	IN
8932	140	16	random	random	JJ
8932	140	17	times	time	NNS
8932	140	18	during	during	IN
8932	140	19	the	the	DT
8932	140	20	day	day	NN
8932	140	21	,	,	,
8932	140	22	to	to	TO
8932	140	23	see	see	VB
8932	140	24	if	if	IN
8932	140	25	a	a	DT
8932	140	26	copy	copy	NN
8932	140	27	was	be	VBD
8932	140	28	available	available	JJ
8932	140	29	.	.	.
8932	141	1	The	the	DT
8932	141	2	number	number	NN
8932	141	3	of	of	IN
8932	141	4	loans	loan	NNS
8932	141	5	of	of	IN
8932	141	6	each	each	DT
8932	141	7	copy	copy	NN
8932	141	8	of	of	IN
8932	141	9	each	each	DT
8932	141	10	book	book	NN
8932	141	11	dur-	dur-	VBZ
8932	141	12	ing	e	VBG
8932	141	13	the	the	DT
8932	141	14	period	period	NN
8932	141	15	was	be	VBD
8932	141	16	noted	note	VBN
8932	141	17	and	and	CC
8932	141	18	the	the	DT
8932	141	19	library	library	NN
8932	141	20	staff	staff	NN
8932	141	21	carried	carry	VBD
8932	141	22	out	out	RP
8932	141	23	a	a	DT
8932	141	24	thorough	thorough	JJ
8932	141	25	check	check	NN
8932	141	26	to	to	TO
8932	141	27	determine	determine	VB
8932	141	28	whether	whether	IN
8932	141	29	any	any	DT
8932	141	30	copies	copy	NNS
8932	141	31	shown	show	VBN
8932	141	32	in	in	IN
8932	141	33	the	the	DT
8932	141	34	catalog	catalog	NN
8932	141	35	had	have	VBD
8932	141	36	been	be	VBN
8932	141	37	lost	lose	VBN
8932	141	38	,	,	,
8932	141	39	stolen	steal	VBN
8932	141	40	,	,	,
8932	141	41	or	or	CC
8932	141	42	had	have	VBD
8932	141	43	their	-PRON-	PRP$
8932	141	44	loan	loan	NN
8932	141	45	category	category	NN
8932	141	46	altered	alter	VBD
8932	141	47	.	.	.
8932	142	1	The	the	DT
8932	142	2	simulation	simulation	NN
8932	142	3	was	be	VBD
8932	142	4	used	use	VBN
8932	142	5	to	to	TO
8932	142	6	estimate	estimate	VB
8932	142	7	the	the	DT
8932	142	8	percentage	percentage	NN
8932	142	9	time	time	NN
8932	142	10	on	on	IN
8932	142	11	shelf	shelf	NN
8932	142	12	and	and	CC
8932	142	13	this	this	DT
8932	142	14	was	be	VBD
8932	142	15	plotted	plot	VBN
8932	142	16	on	on	IN
8932	142	17	a	a	DT
8932	142	18	graph	graph	NN
8932	142	19	against	against	IN
8932	142	20	the	the	DT
8932	142	21	ob-	ob-	NN
8932	142	22	served	serve	VBN
8932	142	23	percentage	percentage	NN
8932	142	24	.	.	.
8932	143	1	Figure	figure	NN
8932	143	2	2	2	CD
8932	143	3	shows	show	VBZ
8932	143	4	the	the	DT
8932	143	5	graph	graph	NN
8932	143	6	for	for	IN
8932	143	7	the	the	DT
8932	143	8	original	original	JJ
8932	143	9	values	value	NNS
8932	143	10	of	of	IN
8932	143	11	the	the	DT
8932	143	12	parameters	parameter	NNS
8932	143	13	.	.	.
8932	144	1	In	in	IN
8932	144	2	this	this	DT
8932	144	3	graph	graph	NN
8932	144	4	the	the	DT
8932	144	5	x	x	NN
8932	144	6	axis	axis	RB
8932	144	7	shows	show	VBZ
8932	144	8	the	the	DT
8932	144	9	percentage	percentage	NN
8932	144	10	time	time	NN
8932	144	11	on	on	IN
8932	144	12	shelf	shelf	NN
8932	144	13	predicted	predict	VBN
8932	144	14	by	by	IN
8932	144	15	the	the	DT
8932	144	16	simulation	simulation	NN
8932	144	17	;	;	:
8932	144	18	the	the	DT
8932	144	19	y	y	NNP
8932	144	20	axis	axis	NNP
8932	144	21	shows	show	VBZ
8932	144	22	the	the	DT
8932	144	23	percentage	percentage	NN
8932	144	24	observed	observe	VBN
8932	144	25	.	.	.
8932	145	1	If	if	IN
8932	145	2	the	the	DT
8932	145	3	model	model	NN
8932	145	4	were	be	VBD
8932	145	5	perfect	perfect	JJ
8932	145	6	the	the	DT
8932	145	7	points	point	NNS
8932	145	8	would	would	MD
8932	145	9	lie	lie	VB
8932	145	10	near	near	IN
8932	145	11	the	the	DT
8932	145	12	line	line	NN
8932	145	13	y	y	NNP
8932	145	14	=	=	SYM
8932	145	15	x	x	NNS
8932	145	16	,	,	,
8932	145	17	deviations	deviation	NNS
8932	145	18	being	be	VBG
8932	145	19	caused	cause	VBN
8932	145	20	by	by	IN
8932	145	21	y	y	NNP
8932	145	22	being	be	VBG
8932	145	23	a	a	DT
8932	145	24	random	random	JJ
8932	145	25	variable	variable	NN
8932	145	26	.	.	.
8932	146	1	The	the	DT
8932	146	2	graph	graph	NN
8932	146	3	in	in	IN
8932	146	4	Figure	Figure	NNP
8932	146	5	2	2	CD
8932	146	6	is	be	VBZ
8932	146	7	clearly	clearly	RB
8932	146	8	convex	convex	NNP
8932	146	9	down-	down-	NNP
8932	146	10	wards	ward	NNS
8932	146	11	showing	show	VBG
8932	146	12	a	a	DT
8932	146	13	consistent	consistent	JJ
8932	146	14	error	error	NN
8932	146	15	in	in	IN
8932	146	16	the	the	DT
8932	146	17	model	model	NN
8932	146	18	,	,	,
8932	146	19	with	with	IN
8932	146	20	these	these	DT
8932	146	21	values	value	NNS
8932	146	22	of	of	IN
8932	146	23	the	the	DT
8932	146	24	pa-	pa-	XX
8932	146	25	rameters	rameter	NNS
8932	146	26	.	.	.
8932	147	1	Knowing	know	VBG
8932	147	2	that	that	IN
8932	147	3	the	the	DT
8932	147	4	simulation	simulation	NN
8932	147	5	is	be	VBZ
8932	147	6	sensitive	sensitive	JJ
8932	147	7	to	to	IN
8932	147	8	the	the	DT
8932	147	9	parameter	parameter	NN
8932	147	10	giving	give	VBG
8932	147	11	the	the	DT
8932	147	12	proportion	proportion	NN
8932	147	13	of	of	IN
8932	147	14	use	use	NN
8932	147	15	that	that	WDT
8932	147	16	takes	take	VBZ
8932	147	17	place	place	NN
8932	147	18	within	within	IN
8932	147	19	the	the	DT
8932	147	20	library	library	NN
8932	147	21	and	and	CC
8932	147	22	that	that	IN
8932	147	23	our	-PRON-	PRP$
8932	147	24	esti-	esti-	FW
8932	147	25	mate	mate	NN
8932	147	26	of	of	IN
8932	147	27	its	-PRON-	PRP$
8932	147	28	value	value	NN
8932	147	29	was	be	VBD
8932	147	30	not	not	RB
8932	147	31	precise	precise	JJ
8932	147	32	,	,	,
8932	147	33	a	a	DT
8932	147	34	series	series	NN
8932	147	35	of	of	IN
8932	147	36	graphs	graph	NNS
8932	147	37	were	be	VBD
8932	147	38	prepared	prepare	VBN
8932	147	39	varying	vary	VBG
8932	147	40	this	this	DT
8932	147	41	parameter	parameter	NN
8932	147	42	.	.	.
8932	148	1	Figure	figure	NN
8932	148	2	3	3	CD
8932	148	3	shows	show	VBZ
8932	148	4	the	the	DT
8932	148	5	same	same	JJ
8932	148	6	observations	observation	NNS
8932	148	7	plotted	plot	VBD
8932	148	8	against	against	IN
8932	148	9	pre-	pre-	NN
8932	148	10	dictions	diction	NNS
8932	148	11	assuming	assume	VBG
8932	148	12	60	60	CD
8932	148	13	percent	percent	NN
8932	148	14	use	use	NN
8932	148	15	within	within	IN
8932	148	16	the	the	DT
8932	148	17	library	library	NN
8932	148	18	,	,	,
8932	148	19	the	the	DT
8932	148	20	value	value	NN
8932	148	21	which	which	WDT
8932	148	22	best	good	JJS
8932	148	23	predicts	predict	VBZ
8932	148	24	the	the	DT
8932	148	25	observations	observation	NNS
8932	148	26	.	.	.
8932	149	1	This	this	DT
8932	149	2	graph	graph	NN
8932	149	3	is	be	VBZ
8932	149	4	much	much	RB
8932	149	5	closer	close	JJR
8932	149	6	to	to	IN
8932	149	7	being	be	VBG
8932	149	8	linear	linear	JJ
8932	149	9	than	than	IN
8932	149	10	Figure2	Figure2	NNP
8932	149	11	.	.	.
8932	150	1	The	the	DT
8932	150	2	next	next	JJ
8932	150	3	question	question	NN
8932	150	4	is	be	VBZ
8932	150	5	whether	whether	IN
8932	150	6	the	the	DT
8932	150	7	nonlinearities	nonlinearitie	NNS
8932	150	8	in	in	IN
8932	150	9	Figure	Figure	NNP
8932	150	10	3	3	CD
8932	150	11	are	be	VBP
8932	150	12	the	the	DT
8932	150	13	type	type	NN
8932	150	14	to	to	TO
8932	150	15	be	be	VB
8932	150	16	expected	expect	VBN
8932	150	17	from	from	IN
8932	150	18	y	y	NNP
8932	150	19	being	be	VBG
8932	150	20	a	a	DT
8932	150	21	random	random	JJ
8932	150	22	variable	variable	NN
8932	150	23	.	.	.
8932	151	1	A	a	DT
8932	151	2	very	very	RB
8932	151	3	rough	rough	JJ
8932	151	4	calculation	calculation	NN
8932	151	5	helps	help	VBZ
8932	151	6	to	to	TO
8932	151	7	answer	answer	VB
8932	151	8	this	this	DT
8932	151	9	question	question	NN
8932	151	10	.	.	.
8932	152	1	If	if	IN
8932	152	2	we	-PRON-	PRP
8932	152	3	make	make	VBP
8932	152	4	the	the	DT
8932	152	5	dubious	dubious	JJ
8932	152	6	assumption	assumption	NN
8932	152	7	that	that	IN
8932	152	8	80	80	CD
8932	152	9	I	-PRON-	PRP
8932	152	10	ournal	ournal	JJ
8932	152	11	of	of	IN
8932	152	12	Lihm1'y	Lihm1'y	NNP
8932	152	13	Automation	Automation	NNP
8932	152	14	Vol	Vol	NNP
8932	152	15	.	.	.
8932	153	1	7/2	7/2	CD
8932	153	2	June	June	NNP
8932	153	3	197	197	CD
8932	153	4	4	4	CD
8932	153	5	Observed	observed	JJ
8932	153	6	availability	availability	NN
8932	153	7	(	(	-LRB-
8932	153	8	percent	percent	NN
8932	153	9	time	time	NN
8932	153	10	on	on	IN
8932	153	11	shelf	shelf	NN
8932	153	12	)	)	-RRB-
8932	153	13	100	100	CD
8932	153	14	50	50	CD
8932	153	15	25	25	CD
8932	153	16	o~----------~~----------~50~----------~75	o~----------~~----------~50~----------~75	NNPS
8932	153	17	_	_	NNP
8932	153	18	_	_	NNP
8932	153	19	_	_	NNP
8932	153	20	_	_	NNP
8932	153	21	_	_	NNP
8932	153	22	_	_	NNP
8932	153	23	_	_	NNP
8932	153	24	_	_	NNP
8932	153	25	_	_	NNP
8932	153	26	_	_	NNP
8932	153	27	_	_	NNP
8932	153	28	_	_	NNP
8932	153	29	-JlOO	-JlOO	,
8932	153	30	Predicted	predict	VBN
8932	153	31	availability	availability	NN
8932	153	32	(	(	-LRB-
8932	153	33	percent	percent	NN
8932	153	34	time	time	NN
8932	153	35	on	on	IN
8932	153	36	shelf	shelf	NN
8932	153	37	)	)	-RRB-
8932	153	38	Fig	fig	NN
8932	153	39	.	.	.
8932	154	1	2	2	LS
8932	154	2	.	.	.
8932	155	1	Observed	observed	JJ
8932	155	2	percentage	percentage	NN
8932	155	3	time	time	NN
8932	155	4	on	on	IN
8932	155	5	shelf	shelf	NN
8932	155	6	against	against	IN
8932	155	7	predicted	predict	VBN
8932	155	8	(	(	-LRB-
8932	155	9	25	25	CD
8932	155	10	percent	percent	NN
8932	155	11	use	use	NN
8932	155	12	within	within	IN
8932	155	13	library	library	NN
8932	155	14	)	)	-RRB-
8932	155	15	availability	availability	NN
8932	155	16	of	of	IN
8932	155	17	a	a	DT
8932	155	18	copy	copy	NN
8932	155	19	on	on	IN
8932	155	20	a	a	DT
8932	155	21	given	give	VBN
8932	155	22	day	day	NN
8932	155	23	is	be	VBZ
8932	155	24	independent	independent	JJ
8932	155	25	of	of	IN
8932	155	26	the	the	DT
8932	155	27	days	day	NNS
8932	155	28	before	before	RB
8932	155	29	and	and	CC
8932	155	30	afterwards	afterwards	RB
8932	155	31	,	,	,
8932	155	32	then	then	RB
8932	155	33	,	,	,
8932	155	34	for	for	IN
8932	155	35	x	x	DT
8932	155	36	given	give	VBN
8932	155	37	,	,	,
8932	155	38	y	y	NNP
8932	155	39	should	should	MD
8932	155	40	be	be	VB
8932	155	41	approximately	approximately	RB
8932	155	42	normally	normally	RB
8932	155	43	distributed	distribute	VBN
8932	155	44	with	with	IN
8932	155	45	mean	mean	JJ
8932	155	46	x	x	NN
8932	155	47	and	and	CC
8932	155	48	variance	variance	NN
8932	155	49	x	x	NNS
8932	155	50	(	(	-LRB-
8932	155	51	1	1	CD
8932	155	52	-	-	HYPH
8932	155	53	:	:	:
8932	155	54	)	)	-RRB-
8932	155	55	,	,	,
8932	155	56	where	where	WRB
8932	155	57	n	n	PRP
8932	155	58	is	be	VBZ
8932	155	59	the	the	DT
8932	155	60	number	number	NN
8932	155	61	of	of	IN
8932	155	62	days	day	NNS
8932	155	63	in	in	IN
8932	155	64	the	the	DT
8932	155	65	study	study	NN
8932	155	66	(	(	-LRB-
8932	155	67	forty	forty	NNP
8932	155	68	)	)	-RRB-
8932	155	69	.	.	.
8932	156	1	If	if	IN
8932	156	2	this	this	DT
8932	156	3	calculation	calculation	NN
8932	156	4	were	be	VBD
8932	156	5	exact	exact	JJ
8932	156	6	,	,	,
8932	156	7	95	95	CD
8932	156	8	percent	percent	NN
8932	156	9	of	of	IN
8932	156	10	the	the	DT
8932	156	11	observations	observation	NNS
8932	156	12	of	of	IN
8932	156	13	y	y	NNP
8932	156	14	would	would	MD
8932	156	15	lie	lie	VB
8932	156	16	within	within	IN
8932	156	17	two	two	CD
8932	156	18	standard	standard	JJ
8932	156	19	deviations	deviation	NNS
8932	156	20	of	of	IN
8932	156	21	x	x	NNS
8932	156	22	,	,	,
8932	156	23	but	but	CC
8932	156	24	,	,	,
8932	156	25	since	since	IN
8932	156	26	the	the	DT
8932	156	27	assumption	assumption	NN
8932	156	28	of	of	IN
8932	156	29	independence	independence	NN
8932	156	30	is	be	VBZ
8932	156	31	definitely	definitely	RB
8932	156	32	false	false	JJ
8932	156	33	,	,	,
8932	156	34	we	-PRON-	PRP
8932	156	35	would	would	MD
8932	156	36	expect	expect	VB
8932	156	37	the	the	DT
8932	156	38	number	number	NN
8932	156	39	of	of	IN
8932	156	40	observations	observation	NNS
8932	156	41	which	which	WDT
8932	156	42	fall	fall	VBP
8932	156	43	within	within	IN
8932	156	44	the	the	DT
8932	156	45	range	range	NN
8932	156	46	to	to	TO
8932	156	47	be	be	VB
8932	156	48	less	less	JJR
8932	156	49	than	than	IN
8932	156	50	95	95	CD
8932	156	51	per-	per-	NN
8932	156	52	cent	cent	NN
8932	156	53	.	.	.
8932	157	1	The	the	DT
8932	157	2	curves	curve	NNS
8932	157	3	y	y	NN
8932	157	4	=	=	NN
8932	157	5	x	x	SYM
8932	157	6	±	±	CD
8932	157	7	2	2	CD
8932	157	8	{	{	-LRB-
8932	157	9	x(l-	x(l-	ADD
8932	157	10	x)/n	x)/n	.
8932	157	11	}	}	-RRB-
8932	157	12	¥	¥	NN
8932	157	13	.	.	.
8932	158	1	Observed	observed	JJ
8932	158	2	availability	availability	NN
8932	158	3	(	(	-LRB-
8932	158	4	percent	percent	NN
8932	158	5	time	time	NN
8932	158	6	on	on	IN
8932	158	7	shelf	shelf	NN
8932	158	8	)	)	-RRB-
8932	158	9	100	100	CD
8932	158	10	75	75	CD
8932	158	11	50	50	CD
8932	158	12	25	25	CD
8932	158	13	Simulation	Simulation	NNP
8932	158	14	Model/	model/	CD
8932	158	15	ARMS	ARMS	NNP
8932	158	16	and	and	CC
8932	158	17	WALTER	WALTER	NNP
8932	158	18	81	81	CD
8932	158	19	Predicted	predict	VBD
8932	158	20	availability	availability	NN
8932	158	21	(	(	-LRB-
8932	158	22	percent	percent	NN
8932	158	23	time	time	NN
8932	158	24	on	on	IN
8932	158	25	shelf	shelf	NN
8932	158	26	)	)	-RRB-
8932	158	27	Fig	fig	NN
8932	158	28	.	.	.
8932	159	1	3	3	LS
8932	159	2	.	.	.
8932	160	1	Observed	observed	JJ
8932	160	2	percentage	percentage	NN
8932	160	3	time	time	NN
8932	160	4	on	on	IN
8932	160	5	shelf	shelf	NN
8932	160	6	against	against	IN
8932	160	7	predicted	predict	VBN
8932	160	8	(	(	-LRB-
8932	160	9	60	60	CD
8932	160	10	percent	percent	NN
8932	160	11	use	use	NN
8932	160	12	within	within	IN
8932	160	13	library	library	NN
8932	160	14	)	)	-RRB-
8932	160	15	with	with	IN
8932	160	16	95	95	CD
8932	160	17	percent	percent	NN
8932	160	18	probability	probability	NN
8932	160	19	curves	curve	NNS
8932	160	20	have	have	VBP
8932	160	21	been	be	VBN
8932	160	22	added	add	VBN
8932	160	23	to	to	IN
8932	160	24	Figure	figure	NN
8932	160	25	3	3	CD
8932	160	26	.	.	.
8932	161	1	Two	two	CD
8932	161	2	points	point	NNS
8932	161	3	lie	lie	VBP
8932	161	4	well	well	RB
8932	161	5	off	off	IN
8932	161	6	all	all	DT
8932	161	7	graphs	graph	NNS
8932	161	8	and	and	CC
8932	161	9	can	can	MD
8932	161	10	not	not	RB
8932	161	11	be	be	VB
8932	161	12	explained	explain	VBN
8932	161	13	except	except	IN
8932	161	14	as	as	IN
8932	161	15	the	the	DT
8932	161	16	result	result	NN
8932	161	17	of	of	IN
8932	161	18	books	book	NNS
8932	161	19	being	be	VBG
8932	161	20	stolen	steal	VBN
8932	161	21	or	or	CC
8932	161	22	lost	lose	VBN
8932	161	23	during	during	IN
8932	161	24	the	the	DT
8932	161	25	period	period	NN
8932	161	26	of	of	IN
8932	161	27	the	the	DT
8932	161	28	study	study	NN
8932	161	29	.	.	.
8932	162	1	Of	of	IN
8932	162	2	the	the	DT
8932	162	3	remaining	remain	VBG
8932	162	4	twenty	twenty	CD
8932	162	5	-	-	HYPH
8932	162	6	six	six	CD
8932	162	7	all	all	DT
8932	162	8	but	but	CC
8932	162	9	three	three	CD
8932	162	10	lie	lie	NN
8932	162	11	within	within	IN
8932	162	12	the	the	DT
8932	162	13	curves	curve	NNS
8932	162	14	.	.	.
8932	163	1	This	this	DT
8932	163	2	shows	show	VBZ
8932	163	3	that	that	IN
8932	163	4	the	the	DT
8932	163	5	simulation	simulation	NN
8932	163	6	model	model	NN
8932	163	7	as	as	IN
8932	163	8	finally	finally	RB
8932	163	9	calibrated	calibrate	VBN
8932	163	10	gives	give	VBZ
8932	163	11	a	a	DT
8932	163	12	very	very	RB
8932	163	13	reasonable	reasonable	JJ
8932	163	14	description	description	NN
8932	163	15	of	of	IN
8932	163	16	the	the	DT
8932	163	17	situation	situation	NN
8932	163	18	.	.	.
8932	164	1	OPERATIONAL	operational	JJ
8932	164	2	EXPERIENCE	EXPERIENCE	NNS
8932	164	3	The	the	DT
8932	164	4	results	result	NNS
8932	164	5	of	of	IN
8932	164	6	this	this	DT
8932	164	7	simulation	simulation	NN
8932	164	8	have	have	VBP
8932	164	9	been	be	VBN
8932	164	10	used	use	VBN
8932	164	11	by	by	IN
8932	164	12	library	library	NN
8932	164	13	staff	staff	NN
8932	164	14	since	since	IN
8932	164	15	the	the	DT
8932	164	16	middle	middle	NN
8932	164	17	of	of	IN
8932	164	18	1971	1971	CD
8932	164	19	initially	initially	RB
8932	164	20	on	on	IN
8932	164	21	an	an	DT
8932	164	22	experimental	experimental	JJ
8932	164	23	basis	basis	NN
8932	164	24	.	.	.
8932	165	1	A	a	DT
8932	165	2	two	two	CD
8932	165	3	-	-	HYPH
8932	165	4	stage	stage	NN
8932	165	5	process	process	NN
8932	165	6	is	be	VBZ
8932	165	7	in-	in-	JJ
8932	165	8	82	82	CD
8932	165	9	Journal	Journal	NNP
8932	165	10	of	of	IN
8932	165	11	Library	Library	NNP
8932	165	12	Automation	Automation	NNP
8932	165	13	Vol	Vol	NNP
8932	165	14	.	.	.
8932	166	1	7/2	7/2	CD
8932	166	2	June	June	NNP
8932	166	3	1974	1974	CD
8932	166	4	volved	volve	VBD
8932	166	5	.	.	.
8932	167	1	From	from	IN
8932	167	2	the	the	DT
8932	167	3	computer	computer	NN
8932	167	4	based	base	VBN
8932	167	5	circulation	circulation	NN
8932	167	6	system	system	NN
8932	167	7	caU	caU	NNP
8932	167	8	;	;	:
8932	167	9	be	be	VB
8932	167	10	found	find	VBN
8932	167	11	the	the	DT
8932	167	12	number	number	NN
8932	167	13	of	of	IN
8932	167	14	times	time	NNS
8932	167	15	that	that	IN
8932	167	16	each	each	DT
8932	167	17	short	short	JJ
8932	167	18	term	term	NN
8932	167	19	loan	loan	NN
8932	167	20	copy	copy	NN
8932	167	21	has	have	VBZ
8932	167	22	been	be	VBN
8932	167	23	circulated	circulate	VBN
8932	167	24	.	.	.
8932	168	1	From	from	IN
8932	168	2	these	these	DT
8932	168	3	figures	figure	NNS
8932	168	4	the	the	DT
8932	168	5	library	library	NN
8932	168	6	staff	staff	NN
8932	168	7	can	can	MD
8932	168	8	estimate	estimate	VB
8932	168	9	the	the	DT
8932	168	10	demand	demand	NN
8932	168	11	for	for	IN
8932	168	12	a	a	DT
8932	168	13	title	title	NN
8932	168	14	,	,	,
8932	168	15	over	over	IN
8932	168	16	a	a	DT
8932	168	17	given	give	VBN
8932	168	18	period	period	NN
8932	168	19	.	.	.
8932	169	1	Once	once	IN
8932	169	2	the	the	DT
8932	169	3	demand	demand	NN
8932	169	4	has	have	VBZ
8932	169	5	been	be	VBN
8932	169	6	estimated	estimate	VBN
8932	169	7	the	the	DT
8932	169	8	staff	staff	NN
8932	169	9	can	can	MD
8932	169	10	use	use	VB
8932	169	11	the	the	DT
8932	169	12	simulation	simulation	NN
8932	169	13	again	again	RB
8932	169	14	to	to	TO
8932	169	15	determine	determine	VB
8932	169	16	how	how	WRB
8932	169	17	many	many	JJ
8932	169	18	copies	copy	NNS
8932	169	19	would	would	MD
8932	169	20	have	have	VB
8932	169	21	been	be	VBN
8932	169	22	required	require	VBN
8932	169	23	to	to	TO
8932	169	24	have	have	VB
8932	169	25	achieved	achieve	VBN
8932	169	26	a	a	DT
8932	169	27	specified	specified	JJ
8932	169	28	satisfaction	satisfaction	NN
8932	169	29	level	level	NN
8932	169	30	,	,	,
8932	169	31	perhaps	perhaps	RB
8932	169	32	80	80	CD
8932	169	33	percent	percent	NN
8932	169	34	.	.	.
8932	170	1	If	if	IN
8932	170	2	fewer	few	JJR
8932	170	3	copies	copy	NNS
8932	170	4	are	be	VBP
8932	170	5	held	hold	VBN
8932	170	6	by	by	IN
8932	170	7	the	the	DT
8932	170	8	library	library	NN
8932	170	9	orders	order	NNS
8932	170	10	are	be	VBP
8932	170	11	placed	place	VBN
8932	170	12	for	for	IN
8932	170	13	extra	extra	JJ
8932	170	14	copies	copy	NNS
8932	170	15	.	.	.
8932	171	1	At	at	IN
8932	171	2	present	present	JJ
8932	171	3	these	these	DT
8932	171	4	procedures	procedure	NNS
8932	171	5	are	be	VBP
8932	171	6	done	do	VBN
8932	171	7	manually	manually	RB
8932	171	8	using	use	VBG
8932	171	9	tables	table	NNS
8932	171	10	,	,	,
8932	171	11	but	but	CC
8932	171	12	the	the	DT
8932	171	13	possibility	possibility	NN
8932	171	14	exists	exist	VBZ
8932	171	15	of	of	IN
8932	171	16	modifying	modify	VBG
8932	171	17	the	the	DT
8932	171	18	computer	computer	NN
8932	171	19	system	system	NN
8932	171	20	to	to	TO
8932	171	21	identify	identify	VB
8932	171	22	those	those	DT
8932	171	23	titles	title	NNS
8932	171	24	which	which	WDT
8932	171	25	need	need	VBP
8932	171	26	ex-	ex-	RB
8932	171	27	tra	tra	NN
8932	171	28	duplication	duplication	NN
8932	171	29	.	.	.
8932	172	1	The	the	DT
8932	172	2	actual	actual	JJ
8932	172	3	decision	decision	NN
8932	172	4	to	to	TO
8932	172	5	purchase	purchase	VB
8932	172	6	needs	need	NNS
8932	172	7	to	to	TO
8932	172	8	be	be	VB
8932	172	9	done	do	VBN
8932	172	10	by	by	IN
8932	172	11	li-	li-	XX
8932	172	12	brary	brary	JJ
8932	172	13	staff	staff	NN
8932	172	14	who	who	WP
8932	172	15	can	can	MD
8932	172	16	take	take	VB
8932	172	17	account	account	NN
8932	172	18	of	of	IN
8932	172	19	factors	factor	NNS
8932	172	20	not	not	RB
8932	172	21	included	include	VBN
8932	172	22	in	in	IN
8932	172	23	the	the	DT
8932	172	24	simulation	simulation	NN
8932	172	25	,	,	,
8932	172	26	such	such	JJ
8932	172	27	as	as	IN
8932	172	28	price	price	NN
8932	172	29	and	and	CC
8932	172	30	changes	change	NNS
8932	172	31	of	of	IN
8932	172	32	undergraduate	undergraduate	JJ
8932	172	33	courses	course	NNS
8932	172	34	.	.	.
8932	173	1	CONCLUSION	CONCLUSION	NNP
8932	173	2	Although	although	IN
8932	173	3	this	this	DT
8932	173	4	work	work	NN
8932	173	5	was	be	VBD
8932	173	6	carried	carry	VBN
8932	173	7	out	out	RP
8932	173	8	during	during	IN
8932	173	9	1971	1971	CD
8932	173	10	,	,	,
8932	173	11	we	-PRON-	PRP
8932	173	12	shall	shall	MD
8932	173	13	have	have	VB
8932	173	14	little	little	JJ
8932	173	15	op-	op-	XX
8932	173	16	erational	erational	JJ
8932	173	17	experience	experience	NN
8932	173	18	of	of	IN
8932	173	19	the	the	DT
8932	173	20	method	method	NN
8932	173	21	in	in	IN
8932	173	22	action	action	NN
8932	173	23	until	until	IN
8932	173	24	the	the	DT
8932	173	25	computer	computer	NN
8932	173	26	circula-	circula-	XX
8932	173	27	tion	tion	NN
8932	173	28	system	system	NN
8932	173	29	is	be	VBZ
8932	173	30	reorganized	reorganize	VBN
8932	173	31	.	.	.
8932	174	1	In	in	IN
8932	174	2	the	the	DT
8932	174	3	past	past	JJ
8932	174	4	,	,	,
8932	174	5	different	different	JJ
8932	174	6	copies	copy	NNS
8932	174	7	of	of	IN
8932	174	8	the	the	DT
8932	174	9	same	same	JJ
8932	174	10	book	book	NN
8932	174	11	have	have	VBP
8932	174	12	been	be	VBN
8932	174	13	processed	process	VBN
8932	174	14	entirely	entirely	RB
8932	174	15	independently	independently	RB
8932	174	16	,	,	,
8932	174	17	meaning	mean	VBG
8932	174	18	that	that	IN
8932	174	19	the	the	DT
8932	174	20	total	total	JJ
8932	174	21	num-	num-	NNP
8932	174	22	ber	ber	NN
8932	174	23	of	of	IN
8932	174	24	loans	loan	NNS
8932	174	25	of	of	IN
8932	174	26	a	a	DT
8932	174	27	given	give	VBN
8932	174	28	title	title	NN
8932	174	29	can	can	MD
8932	174	30	only	only	RB
8932	174	31	be	be	VB
8932	174	32	found	find	VBN
8932	174	33	by	by	IN
8932	174	34	manually	manually	RB
8932	174	35	adding	add	VBG
8932	174	36	up	up	RP
8932	174	37	the	the	DT
8932	174	38	number	number	NN
8932	174	39	of	of	IN
8932	174	40	loans	loan	NNS
8932	174	41	of	of	IN
8932	174	42	each	each	DT
8932	174	43	copy	copy	NN
8932	174	44	.	.	.
8932	175	1	In	in	IN
8932	175	2	the	the	DT
8932	175	3	revised	revise	VBN
8932	175	4	computer	computer	NN
8932	175	5	system	system	NN
8932	175	6	this	this	DT
8932	175	7	will	will	MD
8932	175	8	be	be	VB
8932	175	9	done	do	VBN
8932	175	10	automatically	automatically	RB
8932	175	11	.	.	.
8932	176	1	Experience	experience	NN
8932	176	2	will	will	MD
8932	176	3	probably	probably	RB
8932	176	4	show	show	VB
8932	176	5	that	that	IN
8932	176	6	the	the	DT
8932	176	7	best	good	JJS
8932	176	8	procedure	procedure	NN
8932	176	9	combines	combine	VBZ
8932	176	10	use	use	NN
8932	176	11	of	of	IN
8932	176	12	the	the	DT
8932	176	13	simulation	simulation	NN
8932	176	14	model	model	NN
8932	176	15	with	with	IN
8932	176	16	reading	reading	NN
8932	176	17	lists	list	NNS
8932	176	18	and	and	CC
8932	176	19	the	the	DT
8932	176	20	skill	skill	NN
8932	176	21	of	of	IN
8932	176	22	a	a	DT
8932	176	23	librarian	librarian	NN
8932	176	24	.	.	.
8932	177	1	One	one	CD
8932	177	2	possible	possible	JJ
8932	177	3	feature	feature	NN
8932	177	4	of	of	IN
8932	177	5	a	a	DT
8932	177	6	computer	computer	NN
8932	177	7	based	base	VBN
8932	177	8	system	system	NN
8932	177	9	is	be	VBZ
8932	177	10	that	that	IN
8932	177	11	it	-PRON-	PRP
8932	177	12	could	could	MD
8932	177	13	automatically	automatically	RB
8932	177	14	indicate	indicate	VB
8932	177	15	which	which	WDT
8932	177	16	books	book	NNS
8932	177	17	appear	appear	VBP
8932	177	18	to	to	TO
8932	177	19	require	require	VB
8932	177	20	duplication	duplication	NN
8932	177	21	.	.	.
8932	178	1	The	the	DT
8932	178	2	method	method	NN
8932	178	3	used	use	VBN
8932	178	4	here	here	RB
8932	178	5	would	would	MD
8932	178	6	seem	seem	VB
8932	178	7	to	to	TO
8932	178	8	apply	apply	VB
8932	178	9	equally	equally	RB
8932	178	10	well	well	RB
8932	178	11	to	to	IN
8932	178	12	other	other	JJ
8932	178	13	li-	li-	JJ
8932	178	14	braries	brarie	NNS
8932	178	15	.	.	.
8932	179	1	Naturally	naturally	RB
8932	179	2	the	the	DT
8932	179	3	circulation	circulation	NN
8932	179	4	patterns	pattern	NNS
8932	179	5	of	of	IN
8932	179	6	other	other	JJ
8932	179	7	libraries	library	NNS
8932	179	8	are	be	VBP
8932	179	9	different	different	JJ
8932	179	10	,	,	,
8932	179	11	which	which	WDT
8932	179	12	means	mean	VBZ
8932	179	13	that	that	IN
8932	179	14	a	a	DT
8932	179	15	different	different	JJ
8932	179	16	simulation	simulation	NN
8932	179	17	would	would	MD
8932	179	18	be	be	VB
8932	179	19	needed	need	VBN
8932	179	20	,	,	,
8932	179	21	but	but	CC
8932	179	22	this	this	DT
8932	179	23	work	work	NN
8932	179	24	has	have	VBZ
8932	179	25	shown	show	VBN
8932	179	26	that	that	IN
8932	179	27	it	-PRON-	PRP
8932	179	28	is	be	VBZ
8932	179	29	possible	possible	JJ
8932	179	30	to	to	TO
8932	179	31	calibrate	calibrate	VB
8932	179	32	a	a	DT
8932	179	33	simulation	simulation	NN
8932	179	34	accurately	accurately	RB
8932	179	35	enough	enough	RB
8932	179	36	to	to	TO
8932	179	37	examine	examine	VB
8932	179	38	the	the	DT
8932	179	39	circulation	circulation	NN
8932	179	40	of	of	IN
8932	179	41	individual	individual	JJ
8932	179	42	books	book	NNS
8932	179	43	.	.	.
8932	180	1	ACKNOWLEDGMENTS	acknowledgment	NNS
8932	180	2	We	-PRON-	PRP
8932	180	3	would	would	MD
8932	180	4	like	like	VB
8932	180	5	to	to	TO
8932	180	6	thank	thank	VB
8932	180	7	the	the	DT
8932	180	8	many	many	JJ
8932	180	9	members	member	NNS
8932	180	10	of	of	IN
8932	180	11	the	the	DT
8932	180	12	University	University	NNP
8932	180	13	of	of	IN
8932	180	14	Sussex	Sussex	NNP
8932	180	15	library	library	NN
8932	180	16	staff	staff	NN
8932	180	17	who	who	WP
8932	180	18	have	have	VBP
8932	180	19	helped	help	VBN
8932	180	20	at	at	IN
8932	180	21	various	various	JJ
8932	180	22	stages	stage	NNS
8932	180	23	,	,	,
8932	180	24	particularly	particularly	RB
8932	180	25	P.	P.	NNP
8932	180	26	T.	T.	NNP
8932	180	27	Stone	Stone	NNP
8932	180	28	who	who	WP
8932	180	29	was	be	VBD
8932	180	30	closely	closely	RB
8932	180	31	involved	involve	VBN
8932	180	32	throughout	throughout	IN
8932	180	33	.	.	.
8932	181	1	REFERENCES	reference	NNS
8932	181	2	1	1	CD
8932	181	3	.	.	.
8932	182	1	P.	P.	NNP
8932	182	2	F.	F.	NNP
8932	182	3	Webster	Webster	NNP
8932	182	4	,	,	,
8932	182	5	Provision	Provision	NNP
8932	182	6	of	of	IN
8932	182	7	Duplicate	Duplicate	NNP
8932	182	8	Copies	Copies	NNPS
8932	182	9	in	in	IN
8932	182	10	the	the	DT
8932	182	11	University	University	NNP
8932	182	12	Library	Library	NNP
8932	182	13	,	,	,
8932	182	14	Final	final	JJ
8932	182	15	year	year	NN
8932	182	16	project	project	NN
8932	182	17	report	report	NN
8932	182	18	(	(	-LRB-
8932	182	19	University	University	NNP
8932	182	20	of	of	IN
8932	182	21	Sussex	Sussex	NNP
8932	182	22	,	,	,
8932	182	23	1971	1971	CD
8932	182	24	)	)	-RRB-
8932	182	25	.	.	.
8932	183	1	2	2	LS
8932	183	2	.	.	.
8932	184	1	P.	P.	NNP
8932	184	2	M.	M.	NNP
8932	184	3	Morse	Morse	NNP
8932	184	4	and	and	CC
8932	184	5	C.	C.	NNP
8932	184	6	R.	R.	NNP
8932	184	7	Elston	Elston	NNP
8932	184	8	,	,	,
8932	184	9	"	"	``
8932	184	10	A	a	DT
8932	184	11	Probability	Probability	NNP
8932	184	12	Model	Model	NNP
8932	184	13	for	for	IN
8932	184	14	Obsolescence	obsolescence	NN
8932	184	15	,	,	,
8932	184	16	"	"	''
8932	184	17	Operations	operation	NNS
8932	184	18	Resem·ch	Resem·ch	NNP
8932	184	19	17:36	17:36	CD
8932	184	20	-	-	SYM
8932	184	21	47	47	CD
8932	184	22	(	(	-LRB-
8932	184	23	1969	1969	CD
8932	184	24	)	)	-RRB-
8932	184	25	.	.	.
8932	185	1	3	3	LS
8932	185	2	.	.	.
8932	186	1	R.	R.	NNP
8932	186	2	S.	S.	NNP
8932	186	3	Grant	Grant	NNP
8932	186	4	,	,	,
8932	186	5	"	"	``
8932	186	6	Predicting	predict	VBG
8932	186	7	the	the	DT
8932	186	8	Need	Need	NNP
8932	186	9	for	for	IN
8932	186	10	Multiple	Multiple	NNP
8932	186	11	Copies	Copies	NNPS
8932	186	12	of	of	IN
8932	186	13	Books	Books	NNPS
8932	186	14	,	,	,
8932	186	15	"	"	''
8932	186	16	Journal	Journal	NNP
8932	186	17	of	of	IN
8932	186	18	Library	Library	NNP
8932	186	19	Automation	Automation	NNP
8932	186	20	4:64	4:64	CD
8932	186	21	-	-	SYM
8932	186	22	71	71	CD
8932	186	23	(	(	-LRB-
8932	186	24	June	June	NNP
8932	186	25	1971	1971	CD
8932	186	26	)	)	-RRB-
8932	186	27	.	.	.
8932	187	1	4	4	LS
8932	187	2	.	.	.
8932	188	1	H.	H.	NNP
8932	188	2	H.	H.	NNP
8932	188	3	Fussier	Fussier	NNP
8932	188	4	and	and	CC
8932	188	5	J.	J.	NNP
8932	188	6	L.	L.	NNP
8932	188	7	Simon	Simon	NNP
8932	188	8	,	,	,
8932	188	9	Patterns	Patterns	NNPS
8932	188	10	in	in	IN
8932	188	11	the	the	DT
8932	188	12	Use	Use	NNP
8932	188	13	of	of	IN
8932	188	14	Books	Books	NNPS
8932	188	15	in	in	IN
8932	188	16	Large	Large	NNP
8932	188	17	Research	Research	NNP
8932	188	18	Libmries	Libmries	NNP
8932	188	19	(	(	-LRB-
8932	188	20	Chicago	Chicago	NNP
8932	188	21	:	:	:
8932	188	22	Univ	Univ	NNP
8932	188	23	.	.	.
8932	189	1	of	of	IN
8932	189	2	Chicago	Chicago	NNP
8932	189	3	Pr	Pr	NNP
8932	189	4	.	.	NNP
8932	189	5	,	,	,
8932	189	6	1969	1969	CD
8932	189	7	)	)	-RRB-
8932	189	8	.	.	.
8932	190	1	5	5	CD
8932	190	2	.	.	.
8932	191	1	A.	A.	NNP
8932	191	2	G.	G.	NNP
8932	191	3	Mackenzie	Mackenzie	NNP
8932	191	4	et	et	FW
8932	191	5	al	al	NNP
8932	191	6	.	.	NNP
8932	191	7	,	,	,
8932	191	8	Systems	Systems	NNPS
8932	191	9	Analysis	Analysis	NNP
8932	191	10	of	of	IN
8932	191	11	a	a	DT
8932	191	12	University	University	NNP
8932	191	13	Library	Library	NNP
8932	191	14	.	.	.
8932	192	1	Report	report	NN
8932	192	2	to	to	IN
8932	192	3	OSTI	OSTI	NNP
8932	192	4	on	on	IN
8932	192	5	Project	Project	NNP
8932	192	6	Sl/	Sl/	NNP
8932	192	7	52/02	52/02	CD
8932	192	8	,	,	,
8932	192	9	1969	1969	CD
8932	192	10	.	.	.
8932	193	1	6	6	CD
8932	193	2	.	.	.
8932	194	1	J.	J.	NNP
8932	194	2	Urquhart	Urquhart	NNP
8932	194	3	,	,	,
8932	194	4	Private	private	JJ
8932	194	5	discussion	discussion	NN
8932	194	6	,	,	,
8932	194	7	1971	1971	CD
8932	194	8	.	.	.