id	sid	tid	token	lemma	pos
ispiv-207	1	1	14th	14th	ADJ
ispiv-207	1	2	international	international	ADJ
ispiv-207	1	3	symposium	symposium	NOUN
ispiv-207	1	4	on	on	ADP
ispiv-207	1	5	particle	particle	NOUN
ispiv-207	1	6	image	image	NOUN
ispiv-207	1	7	velocimetry	velocimetry	NOUN
ispiv-207	1	8	–	–	PUNCT
ispiv-207	1	9	ispiv	ispiv	NOUN
ispiv-207	1	10	2021	2021	NUM
ispiv-207	1	11	august	august	PROPN
ispiv-207	1	12	1–5	1–5	NUM
ispiv-207	1	13	,	,	PUNCT
ispiv-207	1	14	2021	2021	NUM
ispiv-207	1	15	robust	robust	ADJ
ispiv-207	1	16	approach	approach	NOUN
ispiv-207	1	17	to	to	ADP
ispiv-207	1	18	monitoring	monitor	VERB
ispiv-207	1	19	lagrangian	lagrangian	ADJ
ispiv-207	1	20	transport	transport	NOUN
ispiv-207	1	21	in	in	ADP
ispiv-207	1	22	very	very	ADV
ispiv-207	1	23	large	large	ADJ
ispiv-207	1	24	volumes	volume	NOUN
ispiv-207	1	25	f.	f.	PROPN
ispiv-207	1	26	kaiser∗	kaiser∗	PROPN
ispiv-207	1	27	,	,	PUNCT
ispiv-207	1	28	a.	a.	NOUN
ispiv-207	1	29	haramis	haramis	PROPN
ispiv-207	1	30	,	,	PUNCT
ispiv-207	1	31	j.	j.	PROPN
ispiv-207	1	32	galler	galler	PROPN
ispiv-207	1	33	,	,	PUNCT
ispiv-207	1	34	d.	d.	PROPN
ispiv-207	1	35	e.	e.	PROPN
ispiv-207	1	36	rival	rival	PROPN
ispiv-207	1	37	department	department	PROPN
ispiv-207	1	38	of	of	ADP
ispiv-207	1	39	mechanical	mechanical	ADJ
ispiv-207	1	40	and	and	CCONJ
ispiv-207	1	41	materials	material	NOUN
ispiv-207	1	42	engineering	engineering	NOUN
ispiv-207	1	43	,	,	PUNCT
ispiv-207	1	44	queen	queen	PROPN
ispiv-207	1	45	’s	’s	PART
ispiv-207	1	46	university	university	PROPN
ispiv-207	1	47	,	,	PUNCT
ispiv-207	1	48	kingston	kingston	PROPN
ispiv-207	1	49	,	,	PUNCT
ispiv-207	1	50	ontario	ontario	PROPN
ispiv-207	1	51	,	,	PUNCT
ispiv-207	1	52	canada	canada	PROPN
ispiv-207	1	53	∗	∗	VERB
ispiv-207	1	54	f.kaiser@queensu.ca	f.kaiser@queensu.ca	NOUN
ispiv-207	2	1	abstract	abstract	ADJ
ispiv-207	2	2	state	state	NOUN
ispiv-207	2	3	-	-	PUNCT
ispiv-207	2	4	of	of	ADP
ispiv-207	2	5	-	-	PUNCT
ispiv-207	2	6	the	the	DET
ispiv-207	2	7	-	-	PUNCT
ispiv-207	2	8	art	art	NOUN
ispiv-207	2	9	flow	flow	NOUN
ispiv-207	2	10	measurements	measurement	NOUN
ispiv-207	2	11	utilize	utilize	VERB
ispiv-207	2	12	four	four	NUM
ispiv-207	2	13	or	or	CCONJ
ispiv-207	2	14	more	more	ADV
ispiv-207	2	15	high	high	ADJ
ispiv-207	2	16	-	-	PUNCT
ispiv-207	2	17	speed	speed	NOUN
ispiv-207	2	18	cameras	camera	NOUN
ispiv-207	2	19	to	to	PART
ispiv-207	2	20	perform	perform	VERB
ispiv-207	2	21	highly	highly	ADV
ispiv-207	2	22	-	-	PUNCT
ispiv-207	2	23	accurate	accurate	ADJ
ispiv-207	2	24	lagrangian	lagrangian	ADJ
ispiv-207	2	25	particle	particle	NOUN
ispiv-207	2	26	tracking	tracking	NOUN
ispiv-207	2	27	(	(	PUNCT
ispiv-207	2	28	lpt	lpt	PROPN
ispiv-207	2	29	)	)	PUNCT
ispiv-207	2	30	in	in	ADP
ispiv-207	2	31	small	small	ADJ
ispiv-207	2	32	to	to	PART
ispiv-207	2	33	medium	medium	ADJ
ispiv-207	2	34	-	-	PUNCT
ispiv-207	2	35	sized	sized	ADJ
ispiv-207	2	36	measurement	measurement	NOUN
ispiv-207	2	37	volumes	volume	NOUN
ispiv-207	2	38	(	(	PUNCT
ispiv-207	2	39	schanz	schanz	PROPN
ispiv-207	2	40	et	et	PROPN
ispiv-207	2	41	al	al	PROPN
ispiv-207	2	42	.	.	PROPN
ispiv-207	2	43	,	,	PUNCT
ispiv-207	2	44	2016	2016	NUM
ispiv-207	2	45	)	)	PUNCT
ispiv-207	2	46	.	.	PUNCT
ispiv-207	3	1	hou	hou	PROPN
ispiv-207	3	2	et	et	PROPN
ispiv-207	3	3	al	al	PROPN
ispiv-207	3	4	.	.	PROPN
ispiv-207	3	5	(	(	PUNCT
ispiv-207	3	6	2021	2021	NUM
ispiv-207	3	7	)	)	PUNCT
ispiv-207	3	8	suggested	suggest	VERB
ispiv-207	3	9	a	a	DET
ispiv-207	3	10	novel	novel	ADJ
ispiv-207	3	11	approach	approach	NOUN
ispiv-207	3	12	to	to	PART
ispiv-207	3	13	allow	allow	VERB
ispiv-207	3	14	measurements	measurement	NOUN
ispiv-207	3	15	in	in	ADP
ispiv-207	3	16	significantly	significantly	ADV
ispiv-207	3	17	larger	large	ADJ
ispiv-207	3	18	measurement	measurement	NOUN
ispiv-207	3	19	volumes	volume	NOUN
ispiv-207	3	20	(	(	PUNCT
ispiv-207	3	21	o(10m3	o(10m3	PROPN
ispiv-207	3	22	)	)	PUNCT
ispiv-207	3	23	)	)	PUNCT
ispiv-207	3	24	while	while	SCONJ
ispiv-207	3	25	reducing	reduce	VERB
ispiv-207	3	26	the	the	DET
ispiv-207	3	27	experimental	experimental	ADJ
ispiv-207	3	28	effort	effort	NOUN
ispiv-207	3	29	.	.	PUNCT
ispiv-207	4	1	a	a	DET
ispiv-207	4	2	single	single	ADJ
ispiv-207	4	3	camera	camera	NOUN
ispiv-207	4	4	is	be	AUX
ispiv-207	4	5	used	use	VERB
ispiv-207	4	6	to	to	PART
ispiv-207	4	7	track	track	VERB
ispiv-207	4	8	centimeter	centimeter	NOUN
ispiv-207	4	9	-	-	PUNCT
ispiv-207	4	10	sized	sized	ADJ
ispiv-207	4	11	soap	soap	NOUN
ispiv-207	4	12	bubbles	bubble	NOUN
ispiv-207	4	13	in	in	ADP
ispiv-207	4	14	three	three	NUM
ispiv-207	4	15	dimensions	dimension	NOUN
ispiv-207	4	16	by	by	ADP
ispiv-207	4	17	not	not	PART
ispiv-207	4	18	only	only	ADV
ispiv-207	4	19	evaluating	evaluate	VERB
ispiv-207	4	20	the	the	DET
ispiv-207	4	21	bubble	bubble	NOUN
ispiv-207	4	22	-	-	PUNCT
ispiv-207	4	23	center	center	NOUN
ispiv-207	4	24	location	location	NOUN
ispiv-207	4	25	but	but	CCONJ
ispiv-207	4	26	also	also	ADV
ispiv-207	4	27	the	the	DET
ispiv-207	4	28	bubbleimage	bubbleimage	NOUN
ispiv-207	4	29	size	size	NOUN
ispiv-207	4	30	.	.	PUNCT
ispiv-207	5	1	possible	possible	ADJ
ispiv-207	5	2	applications	application	NOUN
ispiv-207	5	3	of	of	ADP
ispiv-207	5	4	the	the	DET
ispiv-207	5	5	suggested	suggest	VERB
ispiv-207	5	6	approach	approach	NOUN
ispiv-207	5	7	include	include	VERB
ispiv-207	5	8	but	but	CCONJ
ispiv-207	5	9	are	be	AUX
ispiv-207	5	10	not	not	PART
ispiv-207	5	11	limited	limit	VERB
ispiv-207	5	12	to	to	ADP
ispiv-207	5	13	measurements	measurement	NOUN
ispiv-207	5	14	in	in	ADP
ispiv-207	5	15	industrial	industrial	ADJ
ispiv-207	5	16	wind	wind	NOUN
ispiv-207	5	17	tunnels	tunnel	NOUN
ispiv-207	5	18	(	(	PUNCT
ispiv-207	5	19	hou	hou	NOUN
ispiv-207	5	20	et	et	PROPN
ispiv-207	5	21	al	al	PROPN
ispiv-207	5	22	.	.	PROPN
ispiv-207	5	23	,	,	PUNCT
ispiv-207	5	24	2021	2021	NUM
ispiv-207	5	25	)	)	PUNCT
ispiv-207	5	26	,	,	PUNCT
ispiv-207	5	27	full	full	ADJ
ispiv-207	5	28	-	-	PUNCT
ispiv-207	5	29	scale	scale	NOUN
ispiv-207	5	30	measurements	measurement	NOUN
ispiv-207	5	31	in	in	ADP
ispiv-207	5	32	the	the	DET
ispiv-207	5	33	atmospheric	atmospheric	ADJ
ispiv-207	5	34	boundary	boundary	ADJ
ispiv-207	5	35	layer	layer	NOUN
ispiv-207	5	36	(	(	PUNCT
ispiv-207	5	37	rosi	rosi	PROPN
ispiv-207	5	38	et	et	PROPN
ispiv-207	5	39	al	al	PROPN
ispiv-207	5	40	.	.	PROPN
ispiv-207	5	41	,	,	PUNCT
ispiv-207	5	42	2014	2014	NUM
ispiv-207	5	43	;	;	PUNCT
ispiv-207	5	44	toloui	toloui	NOUN
ispiv-207	5	45	et	et	PROPN
ispiv-207	5	46	al	al	PROPN
ispiv-207	5	47	.	.	PROPN
ispiv-207	5	48	,	,	PUNCT
ispiv-207	5	49	2014	2014	NUM
ispiv-207	5	50	)	)	PUNCT
ispiv-207	5	51	,	,	PUNCT
ispiv-207	5	52	and	and	CCONJ
ispiv-207	5	53	the	the	DET
ispiv-207	5	54	characterization	characterization	NOUN
ispiv-207	5	55	of	of	ADP
ispiv-207	5	56	airflow	airflow	NOUN
ispiv-207	5	57	in	in	ADP
ispiv-207	5	58	indoor	indoor	ADJ
ispiv-207	5	59	spaces	space	NOUN
ispiv-207	5	60	,	,	PUNCT
ispiv-207	5	61	such	such	ADJ
ispiv-207	5	62	as	as	ADP
ispiv-207	5	63	offices	office	NOUN
ispiv-207	5	64	or	or	CCONJ
ispiv-207	5	65	classrooms	classroom	NOUN
ispiv-207	5	66	(	(	PUNCT
ispiv-207	5	67	kähler	kähler	PROPN
ispiv-207	5	68	et	et	PROPN
ispiv-207	5	69	al	al	PROPN
ispiv-207	5	70	.	.	PROPN
ispiv-207	5	71	,	,	PUNCT
ispiv-207	5	72	2020	2020	NUM
ispiv-207	5	73	)	)	PUNCT
ispiv-207	5	74	.	.	PUNCT
ispiv-207	6	1	in	in	ADP
ispiv-207	6	2	the	the	DET
ispiv-207	6	3	context	context	NOUN
ispiv-207	6	4	of	of	ADP
ispiv-207	6	5	the	the	DET
ispiv-207	6	6	recent	recent	ADJ
ispiv-207	6	7	pandemic	pandemic	NOUN
ispiv-207	6	8	,	,	PUNCT
ispiv-207	6	9	the	the	DET
ispiv-207	6	10	latter	latter	ADJ
ispiv-207	6	11	application	application	NOUN
ispiv-207	6	12	could	could	AUX
ispiv-207	6	13	help	help	VERB
ispiv-207	6	14	to	to	PART
ispiv-207	6	15	reduce	reduce	VERB
ispiv-207	6	16	infection	infection	NOUN
ispiv-207	6	17	risk	risk	NOUN
ispiv-207	6	18	by	by	ADP
ispiv-207	6	19	designing	design	VERB
ispiv-207	6	20	appropriate	appropriate	ADJ
ispiv-207	6	21	air	air	NOUN
ispiv-207	6	22	circulation	circulation	NOUN
ispiv-207	6	23	.	.	PUNCT
ispiv-207	7	1	hereby	hereby	ADV
ispiv-207	7	2	,	,	PUNCT
ispiv-207	7	3	frequent	frequent	ADJ
ispiv-207	7	4	air	air	NOUN
ispiv-207	7	5	exchange	exchange	NOUN
ispiv-207	7	6	is	be	AUX
ispiv-207	7	7	recommended	recommend	VERB
ispiv-207	7	8	,	,	PUNCT
ispiv-207	7	9	while	while	SCONJ
ispiv-207	7	10	direct	direct	ADJ
ispiv-207	7	11	airflow	airflow	NOUN
ispiv-207	7	12	from	from	ADP
ispiv-207	7	13	individual	individual	ADJ
ispiv-207	7	14	to	to	ADP
ispiv-207	7	15	individual	individual	NOUN
ispiv-207	7	16	should	should	AUX
ispiv-207	7	17	be	be	AUX
ispiv-207	7	18	avoided	avoid	VERB
ispiv-207	7	19	(	(	PUNCT
ispiv-207	7	20	who	who	PRON
ispiv-207	7	21	,	,	PUNCT
ispiv-207	7	22	2020	2020	NUM
ispiv-207	7	23	)	)	PUNCT
ispiv-207	7	24	.	.	PUNCT
ispiv-207	8	1	the	the	DET
ispiv-207	8	2	present	present	ADJ
ispiv-207	8	3	study	study	NOUN
ispiv-207	8	4	strives	strive	VERB
ispiv-207	8	5	to	to	PART
ispiv-207	8	6	optimize	optimize	VERB
ispiv-207	8	7	and	and	CCONJ
ispiv-207	8	8	simplify	simplify	VERB
ispiv-207	8	9	the	the	DET
ispiv-207	8	10	experimental	experimental	ADJ
ispiv-207	8	11	set	set	NOUN
ispiv-207	8	12	-	-	PUNCT
ispiv-207	8	13	up	up	NOUN
ispiv-207	8	14	as	as	ADV
ispiv-207	8	15	well	well	ADV
ispiv-207	8	16	as	as	ADP
ispiv-207	8	17	to	to	PART
ispiv-207	8	18	characterize	characterize	VERB
ispiv-207	8	19	the	the	DET
ispiv-207	8	20	accuracy	accuracy	NOUN
ispiv-207	8	21	of	of	ADP
ispiv-207	8	22	the	the	DET
ispiv-207	8	23	novel	novel	ADJ
ispiv-207	8	24	single	single	ADJ
ispiv-207	8	25	-	-	PUNCT
ispiv-207	8	26	camera	camera	NOUN
ispiv-207	8	27	approach	approach	NOUN
ispiv-207	8	28	.	.	PUNCT
ispiv-207	9	1	figure	figure	NOUN
ispiv-207	9	2	1(a	1(a	NUM
ispiv-207	9	3	)	)	PUNCT
ispiv-207	9	4	shows	show	VERB
ispiv-207	9	5	the	the	DET
ispiv-207	9	6	set	set	NOUN
ispiv-207	9	7	-	-	PUNCT
ispiv-207	9	8	up	up	NOUN
ispiv-207	9	9	used	use	VERB
ispiv-207	9	10	to	to	PART
ispiv-207	9	11	characterize	characterize	VERB
ispiv-207	9	12	the	the	DET
ispiv-207	9	13	novel	novel	ADJ
ispiv-207	9	14	approach	approach	NOUN
ispiv-207	9	15	.	.	PUNCT
ispiv-207	10	1	figure	figure	VERB
ispiv-207	10	2	1	1	NUM
ispiv-207	10	3	:	:	PUNCT
ispiv-207	10	4	(	(	PUNCT
ispiv-207	10	5	a	a	X
ispiv-207	10	6	)	)	PUNCT
ispiv-207	10	7	sketch	sketch	NOUN
ispiv-207	10	8	of	of	ADP
ispiv-207	10	9	the	the	DET
ispiv-207	10	10	experimental	experimental	ADJ
ispiv-207	10	11	set	set	NOUN
ispiv-207	10	12	-	-	PUNCT
ispiv-207	10	13	up	up	NOUN
ispiv-207	10	14	;	;	PUNCT
ispiv-207	10	15	(	(	PUNCT
ispiv-207	10	16	b	b	X
ispiv-207	10	17	)	)	PUNCT
ispiv-207	10	18	bubble	bubble	NOUN
ispiv-207	10	19	images	image	NOUN
ispiv-207	10	20	recorded	record	VERB
ispiv-207	10	21	at	at	ADP
ispiv-207	10	22	t1	t1	NOUN
ispiv-207	10	23	and	and	CCONJ
ispiv-207	10	24	t4	t4	PROPN
ispiv-207	10	25	with	with	ADP
ispiv-207	10	26	varying	vary	VERB
ispiv-207	10	27	bubbleimage	bubbleimage	NOUN
ispiv-207	10	28	size	size	NOUN
ispiv-207	10	29	(	(	PUNCT
ispiv-207	10	30	db	db	PROPN
ispiv-207	10	31	)	)	PUNCT
ispiv-207	10	32	;	;	PUNCT
ispiv-207	10	33	(	(	PUNCT
ispiv-207	10	34	c	c	X
ispiv-207	10	35	)	)	PUNCT
ispiv-207	10	36	linear	linear	NOUN
ispiv-207	10	37	optics	optic	NOUN
ispiv-207	10	38	producing	produce	VERB
ispiv-207	10	39	the	the	DET
ispiv-207	10	40	bubble	bubble	NOUN
ispiv-207	10	41	images	image	NOUN
ispiv-207	10	42	of	of	ADP
ispiv-207	10	43	size	size	NOUN
ispiv-207	10	44	db	db	ADP
ispiv-207	10	45	dependent	dependent	ADJ
ispiv-207	10	46	on	on	ADP
ispiv-207	10	47	bubble	bubble	NOUN
ispiv-207	10	48	size	size	NOUN
ispiv-207	10	49	(	(	PUNCT
ispiv-207	10	50	db	db	NOUN
ispiv-207	10	51	)	)	PUNCT
ispiv-207	10	52	and	and	CCONJ
ispiv-207	10	53	position	position	NOUN
ispiv-207	10	54	(	(	PUNCT
ispiv-207	10	55	o	o	NOUN
ispiv-207	10	56	)	)	PUNCT
ispiv-207	10	57	;	;	PUNCT
ispiv-207	10	58	and	and	CCONJ
ispiv-207	10	59	(	(	PUNCT
ispiv-207	10	60	d	d	NOUN
ispiv-207	10	61	)	)	PUNCT
ispiv-207	10	62	bubble	bubble	NOUN
ispiv-207	10	63	-	-	PUNCT
ispiv-207	10	64	image	image	NOUN
ispiv-207	10	65	size	size	NOUN
ispiv-207	10	66	(	(	PUNCT
ispiv-207	10	67	db	db	NOUN
ispiv-207	10	68	)	)	PUNCT
ispiv-207	10	69	in	in	ADP
ispiv-207	10	70	pixels	pixel	NOUN
ispiv-207	10	71	as	as	ADP
ispiv-207	10	72	a	a	DET
ispiv-207	10	73	function	function	NOUN
ispiv-207	10	74	of	of	ADP
ispiv-207	10	75	object	object	NOUN
ispiv-207	10	76	distance	distance	NOUN
ispiv-207	10	77	o	o	NOUN
ispiv-207	10	78	with	with	ADP
ispiv-207	10	79	a	a	DET
ispiv-207	10	80	f	f	NOUN
ispiv-207	10	81	=	=	SYM
ispiv-207	10	82	35	35	NUM
ispiv-207	10	83	mm	mm	NOUN
ispiv-207	10	84	lens	lens	NOUN
ispiv-207	10	85	and	and	CCONJ
ispiv-207	10	86	a	a	DET
ispiv-207	10	87	pixel	pixel	NOUN
ispiv-207	10	88	size	size	NOUN
ispiv-207	10	89	of	of	ADP
ispiv-207	10	90	10	10	NUM
ispiv-207	10	91	µm	µm	NOUN
ispiv-207	10	92	.	.	PROPN
ispiv-207	11	1	dashed	dash	VERB
ispiv-207	11	2	lines	line	NOUN
ispiv-207	11	3	visualize	visualize	VERB
ispiv-207	11	4	the	the	DET
ispiv-207	11	5	planes	plane	NOUN
ispiv-207	11	6	shown	show	VERB
ispiv-207	11	7	in	in	ADP
ispiv-207	11	8	(	(	PUNCT
ispiv-207	11	9	a	a	NOUN
ispiv-207	11	10	)	)	PUNCT
ispiv-207	11	11	.	.	PUNCT
ispiv-207	12	1	the	the	DET
ispiv-207	12	2	flow	flow	NOUN
ispiv-207	12	3	over	over	ADP
ispiv-207	12	4	an	an	DET
ispiv-207	12	5	open	open	ADJ
ispiv-207	12	6	-	-	PUNCT
ispiv-207	12	7	jet	jet	NOUN
ispiv-207	12	8	wind	wind	NOUN
ispiv-207	12	9	-	-	PUNCT
ispiv-207	12	10	tunnel	tunnel	NOUN
ispiv-207	12	11	nozzle	nozzle	NOUN
ispiv-207	12	12	(	(	PUNCT
ispiv-207	12	13	cross	cross	NOUN
ispiv-207	12	14	section	section	NOUN
ispiv-207	12	15	0.13m×	0.13m×	NUM
ispiv-207	12	16	0.13	0.13	NUM
ispiv-207	12	17	m	m	NOUN
ispiv-207	12	18	)	)	PUNCT
ispiv-207	12	19	was	be	AUX
ispiv-207	12	20	captured	capture	VERB
ispiv-207	12	21	in	in	ADP
ispiv-207	12	22	a	a	DET
ispiv-207	12	23	1	1	NUM
ispiv-207	12	24	m	m	NOUN
ispiv-207	12	25	×	×	NOUN
ispiv-207	12	26	1	1	NUM
ispiv-207	12	27	m	m	NOUN
ispiv-207	12	28	×	×	NOUN
ispiv-207	12	29	1.2	1.2	NUM
ispiv-207	12	30	m	m	NOUN
ispiv-207	12	31	measurement	measurement	NOUN
ispiv-207	12	32	volume	volume	NOUN
ispiv-207	12	33	via	via	ADP
ispiv-207	12	34	two	two	NUM
ispiv-207	12	35	cameras	camera	NOUN
ispiv-207	12	36	:	:	PUNCT
ispiv-207	12	37	(	(	PUNCT
ispiv-207	12	38	i	i	NOUN
ispiv-207	12	39	)	)	PUNCT
ispiv-207	12	40	a	a	DET
ispiv-207	12	41	main	main	ADJ
ispiv-207	12	42	camera	camera	NOUN
ispiv-207	12	43	that	that	PRON
ispiv-207	12	44	was	be	AUX
ispiv-207	12	45	mounted	mount	VERB
ispiv-207	12	46	above	above	ADP
ispiv-207	12	47	the	the	DET
ispiv-207	12	48	wind	wind	NOUN
ispiv-207	12	49	tunnel	tunnel	NOUN
ispiv-207	12	50	;	;	PUNCT
ispiv-207	12	51	and	and	CCONJ
ispiv-207	12	52	(	(	PUNCT
ispiv-207	12	53	ii	ii	NOUN
ispiv-207	12	54	)	)	PUNCT
ispiv-207	12	55	a	a	DET
ispiv-207	12	56	secondary	secondary	ADJ
ispiv-207	12	57	camera	camera	NOUN
ispiv-207	12	58	that	that	PRON
ispiv-207	12	59	was	be	AUX
ispiv-207	12	60	used	use	VERB
ispiv-207	12	61	for	for	ADP
ispiv-207	12	62	validation	validation	NOUN
ispiv-207	12	63	purposes	purpose	NOUN
ispiv-207	12	64	.	.	PUNCT
ispiv-207	13	1	large	large	ADJ
ispiv-207	13	2	soap	soap	NOUN
ispiv-207	13	3	bubbles	bubble	NOUN
ispiv-207	13	4	(	(	PUNCT
ispiv-207	13	5	db	db	PROPN
ispiv-207	13	6	≈	≈	PROPN
ispiv-207	13	7	30	30	NUM
ispiv-207	13	8	mm	mm	NOUN
ispiv-207	13	9	)	)	PUNCT
ispiv-207	13	10	are	be	AUX
ispiv-207	13	11	illuminated	illuminate	VERB
ispiv-207	13	12	by	by	ADP
ispiv-207	13	13	a	a	DET
ispiv-207	13	14	light	light	ADJ
ispiv-207	13	15	source	source	NOUN
ispiv-207	13	16	placed	place	VERB
ispiv-207	13	17	perpendicular	perpendicular	NOUN
ispiv-207	13	18	to	to	ADP
ispiv-207	13	19	both	both	DET
ispiv-207	13	20	cameras	camera	NOUN
ispiv-207	13	21	.	.	PUNCT
ispiv-207	14	1	dependent	dependent	ADJ
ispiv-207	14	2	on	on	ADP
ispiv-207	14	3	the	the	DET
ispiv-207	14	4	distance	distance	NOUN
ispiv-207	14	5	of	of	ADP
ispiv-207	14	6	the	the	DET
ispiv-207	14	7	bubble	bubble	NOUN
ispiv-207	14	8	to	to	ADP
ispiv-207	14	9	the	the	DET
ispiv-207	14	10	camera	camera	NOUN
ispiv-207	14	11	o(t	o(t	PROPN
ispiv-207	14	12	)	)	PUNCT
ispiv-207	15	1	the	the	DET
ispiv-207	15	2	bubble	bubble	NOUN
ispiv-207	15	3	-	-	PUNCT
ispiv-207	15	4	image	image	NOUN
ispiv-207	15	5	size	size	NOUN
ispiv-207	15	6	db(t	db(t	NOUN
ispiv-207	15	7	)	)	PUNCT
ispiv-207	15	8	varies	vary	VERB
ispiv-207	15	9	in	in	ADP
ispiv-207	15	10	time	time	NOUN
ispiv-207	15	11	;	;	PUNCT
ispiv-207	15	12	see	see	VERB
ispiv-207	15	13	figure	figure	NOUN
ispiv-207	15	14	1(b	1(b	NUM
ispiv-207	15	15	)	)	PUNCT
ispiv-207	15	16	.	.	PUNCT
ispiv-207	16	1	assuming	assume	VERB
ispiv-207	16	2	o	o	PROPN
ispiv-207	16	3	≫	≫	PROPN
ispiv-207	16	4	i	i	PRON
ispiv-207	16	5	(	(	PUNCT
ispiv-207	16	6	image	image	NOUN
ispiv-207	16	7	distance	distance	NOUN
ispiv-207	16	8	i	i	PRON
ispiv-207	16	9	,	,	PUNCT
ispiv-207	16	10	see	see	VERB
ispiv-207	16	11	figure	figure	NOUN
ispiv-207	16	12	1c	1c	NOUN
ispiv-207	16	13	)	)	PUNCT
ispiv-207	16	14	the	the	DET
ispiv-207	16	15	lens	lens	NOUN
ispiv-207	16	16	equation	equation	NOUN
ispiv-207	16	17	leads	lead	VERB
ispiv-207	16	18	to	to	ADP
ispiv-207	16	19	i	i	PROPN
ispiv-207	16	20	≈	≈	PROPN
ispiv-207	16	21	f	f	PROPN
ispiv-207	16	22	,	,	PUNCT
ispiv-207	16	23	which	which	PRON
ispiv-207	16	24	in	in	ADP
ispiv-207	16	25	turn	turn	NOUN
ispiv-207	16	26	simplifies	simplify	VERB
ispiv-207	16	27	the	the	DET
ispiv-207	16	28	magnification	magnification	NOUN
ispiv-207	16	29	equation	equation	NOUN
ispiv-207	16	30	to	to	ADP
ispiv-207	16	31	o	o	PROPN
ispiv-207	17	1	≈	≈	PROPN
ispiv-207	17	2	db	db	PROPN
ispiv-207	18	1	f	f	X
ispiv-207	18	2	db	db	PROPN
ispiv-207	18	3	.	.	PUNCT
ispiv-207	19	1	(	(	PUNCT
ispiv-207	19	2	1	1	X
ispiv-207	19	3	)	)	PUNCT
ispiv-207	19	4	using	use	VERB
ispiv-207	19	5	equation	equation	NOUN
ispiv-207	19	6	1	1	NUM
ispiv-207	19	7	,	,	PUNCT
ispiv-207	19	8	the	the	DET
ispiv-207	19	9	object	object	NOUN
ispiv-207	19	10	distance	distance	NOUN
ispiv-207	19	11	o	o	NOUN
ispiv-207	19	12	and	and	CCONJ
ispiv-207	19	13	thus	thus	ADV
ispiv-207	19	14	the	the	DET
ispiv-207	19	15	three	three	NUM
ispiv-207	19	16	-	-	PUNCT
ispiv-207	19	17	dimensional	dimensional	ADJ
ispiv-207	19	18	position	position	NOUN
ispiv-207	19	19	of	of	ADP
ispiv-207	19	20	a	a	DET
ispiv-207	19	21	bubble	bubble	NOUN
ispiv-207	19	22	can	can	AUX
ispiv-207	19	23	be	be	AUX
ispiv-207	19	24	determined	determine	VERB
ispiv-207	19	25	with	with	ADP
ispiv-207	19	26	a	a	DET
ispiv-207	19	27	single	single	ADJ
ispiv-207	19	28	camera	camera	NOUN
ispiv-207	19	29	if	if	SCONJ
ispiv-207	19	30	db	db	PROPN
ispiv-207	19	31	is	be	AUX
ispiv-207	19	32	known	know	VERB
ispiv-207	19	33	.	.	PUNCT
ispiv-207	20	1	figure	figure	NOUN
ispiv-207	20	2	1(d	1(d	NUM
ispiv-207	20	3	)	)	PUNCT
ispiv-207	20	4	presents	present	VERB
ispiv-207	20	5	the	the	DET
ispiv-207	20	6	interplay	interplay	NOUN
ispiv-207	20	7	of	of	ADP
ispiv-207	20	8	db	db	PROPN
ispiv-207	20	9	,	,	PUNCT
ispiv-207	20	10	o	o	X
ispiv-207	20	11	and	and	CCONJ
ispiv-207	20	12	db	db	VERB
ispiv-207	20	13	for	for	ADP
ispiv-207	20	14	two	two	NUM
ispiv-207	20	15	different	different	ADJ
ispiv-207	20	16	bubble	bubble	NOUN
ispiv-207	20	17	sizes	size	NOUN
ispiv-207	20	18	.	.	PUNCT
ispiv-207	21	1	to	to	PART
ispiv-207	21	2	simplify	simplify	VERB
ispiv-207	21	3	future	future	ADJ
ispiv-207	21	4	experiments	experiment	NOUN
ispiv-207	21	5	,	,	PUNCT
ispiv-207	21	6	a	a	DET
ispiv-207	21	7	custom	custom	NOUN
ispiv-207	21	8	bubble	bubble	NOUN
ispiv-207	21	9	generator	generator	NOUN
ispiv-207	21	10	has	have	AUX
ispiv-207	21	11	been	be	AUX
ispiv-207	21	12	developed	develop	VERB
ispiv-207	21	13	to	to	PART
ispiv-207	21	14	produce	produce	VERB
ispiv-207	21	15	uniformly	uniformly	ADV
ispiv-207	21	16	-	-	PUNCT
ispiv-207	21	17	sized	sized	ADJ
ispiv-207	21	18	bubbles	bubble	NOUN
ispiv-207	21	19	(	(	PUNCT
ispiv-207	21	20	db	db	PROPN
ispiv-207	21	21	≈	≈	PROPN
ispiv-207	21	22	30	30	NUM
ispiv-207	21	23	mm	mm	NOUN
ispiv-207	21	24	)	)	PUNCT
ispiv-207	21	25	.	.	PUNCT
ispiv-207	22	1	note	note	VERB
ispiv-207	22	2	that	that	SCONJ
ispiv-207	22	3	an	an	DET
ispiv-207	22	4	error	error	NOUN
ispiv-207	22	5	of	of	ADP
ispiv-207	22	6	db	db	PROPN
ispiv-207	22	7	propagates	propagate	VERB
ispiv-207	22	8	linearly	linearly	ADV
ispiv-207	22	9	to	to	ADP
ispiv-207	22	10	the	the	DET
ispiv-207	22	11	estimated	estimate	VERB
ispiv-207	22	12	object	object	NOUN
ispiv-207	22	13	distance	distance	NOUN
ispiv-207	22	14	(	(	PUNCT
ispiv-207	22	15	see	see	VERB
ispiv-207	22	16	equation	equation	NOUN
ispiv-207	22	17	(	(	PUNCT
ispiv-207	22	18	1	1	NUM
ispiv-207	22	19	)	)	PUNCT
ispiv-207	22	20	)	)	PUNCT
ispiv-207	22	21	and	and	CCONJ
ispiv-207	22	22	that	that	SCONJ
ispiv-207	22	23	therefore	therefore	ADV
ispiv-207	22	24	a	a	DET
ispiv-207	22	25	high	high	ADJ
ispiv-207	22	26	degree	degree	NOUN
ispiv-207	22	27	of	of	ADP
ispiv-207	22	28	bubble	bubble	NOUN
ispiv-207	22	29	-	-	PUNCT
ispiv-207	22	30	size	size	NOUN
ispiv-207	22	31	uniformity	uniformity	NOUN
ispiv-207	22	32	is	be	AUX
ispiv-207	22	33	required	require	VERB
ispiv-207	22	34	.	.	PUNCT
ispiv-207	23	1	the	the	DET
ispiv-207	23	2	bubble	bubble	NOUN
ispiv-207	23	3	generator	generator	NOUN
ispiv-207	23	4	is	be	AUX
ispiv-207	23	5	designed	design	VERB
ispiv-207	23	6	such	such	ADJ
ispiv-207	23	7	that	that	SCONJ
ispiv-207	23	8	it	it	PRON
ispiv-207	23	9	can	can	AUX
ispiv-207	23	10	be	be	AUX
ispiv-207	23	11	placed	place	VERB
ispiv-207	23	12	in	in	ADP
ispiv-207	23	13	a	a	DET
ispiv-207	23	14	uniform	uniform	ADJ
ispiv-207	23	15	flow	flow	NOUN
ispiv-207	23	16	and	and	CCONJ
ispiv-207	23	17	produce	produce	VERB
ispiv-207	23	18	bubbles	bubble	NOUN
ispiv-207	23	19	without	without	ADP
ispiv-207	23	20	an	an	DET
ispiv-207	23	21	additional	additional	ADJ
ispiv-207	23	22	air	air	NOUN
ispiv-207	23	23	supply	supply	NOUN
ispiv-207	23	24	.	.	PUNCT
ispiv-207	24	1	the	the	DET
ispiv-207	24	2	uniformity	uniformity	NOUN
ispiv-207	24	3	of	of	ADP
ispiv-207	24	4	the	the	DET
ispiv-207	24	5	generated	generate	VERB
ispiv-207	24	6	bubbles	bubble	NOUN
ispiv-207	24	7	was	be	AUX
ispiv-207	24	8	evaluated	evaluate	VERB
ispiv-207	24	9	by	by	ADP
ispiv-207	24	10	placing	place	VERB
ispiv-207	24	11	the	the	DET
ispiv-207	24	12	bubble	bubble	NOUN
ispiv-207	24	13	generator	generator	NOUN
ispiv-207	24	14	on	on	ADP
ispiv-207	24	15	the	the	DET
ispiv-207	24	16	open	open	ADJ
ispiv-207	24	17	-	-	PUNCT
ispiv-207	24	18	jet	jet	NOUN
ispiv-207	24	19	wind	wind	NOUN
ispiv-207	24	20	tunnel	tunnel	NOUN
ispiv-207	24	21	and	and	CCONJ
ispiv-207	24	22	db	db	PROPN
ispiv-207	24	23	could	could	AUX
ispiv-207	24	24	be	be	AUX
ispiv-207	24	25	measured	measure	VERB
ispiv-207	24	26	via	via	ADP
ispiv-207	24	27	shadowgraphy	shadowgraphy	NOUN
ispiv-207	24	28	.	.	PUNCT
ispiv-207	25	1	the	the	DET
ispiv-207	25	2	resulting	result	VERB
ispiv-207	25	3	probability	probability	NOUN
ispiv-207	25	4	distribution	distribution	NOUN
ispiv-207	25	5	is	be	AUX
ispiv-207	25	6	presented	present	VERB
ispiv-207	25	7	in	in	ADP
ispiv-207	25	8	figure	figure	NOUN
ispiv-207	25	9	2(a	2(a	NUM
ispiv-207	25	10	)	)	PUNCT
ispiv-207	25	11	.	.	PUNCT
ispiv-207	26	1	for	for	ADP
ispiv-207	26	2	the	the	DET
ispiv-207	26	3	present	present	ADJ
ispiv-207	26	4	bubble	bubble	NOUN
ispiv-207	26	5	-	-	PUNCT
ispiv-207	26	6	generator	generator	NOUN
ispiv-207	26	7	design	design	NOUN
ispiv-207	26	8	97	97	NUM
ispiv-207	26	9	%	%	NOUN
ispiv-207	26	10	of	of	ADP
ispiv-207	26	11	all	all	DET
ispiv-207	26	12	measured	measure	VERB
ispiv-207	26	13	bubbles	bubble	NOUN
ispiv-207	26	14	were	be	AUX
ispiv-207	26	15	within	within	ADP
ispiv-207	26	16	±5	±5	NOUN
ispiv-207	26	17	%	%	NOUN
ispiv-207	26	18	of	of	ADP
ispiv-207	26	19	the	the	DET
ispiv-207	26	20	mean	mean	ADJ
ispiv-207	26	21	diameter	diameter	NOUN
ispiv-207	26	22	.	.	PUNCT
ispiv-207	27	1	figure	figure	NOUN
ispiv-207	27	2	2	2	NUM
ispiv-207	27	3	:	:	PUNCT
ispiv-207	27	4	(	(	PUNCT
ispiv-207	27	5	a	a	X
ispiv-207	27	6	)	)	PUNCT
ispiv-207	27	7	bubble	bubble	NOUN
ispiv-207	27	8	-	-	PUNCT
ispiv-207	27	9	size	size	NOUN
ispiv-207	27	10	probability	probability	NOUN
ispiv-207	27	11	distribution	distribution	NOUN
ispiv-207	27	12	of	of	ADP
ispiv-207	27	13	the	the	DET
ispiv-207	27	14	novel	novel	ADJ
ispiv-207	27	15	bubble	bubble	NOUN
ispiv-207	27	16	generator	generator	NOUN
ispiv-207	27	17	(	(	PUNCT
ispiv-207	27	18	sample	sample	NOUN
ispiv-207	27	19	size	size	NOUN
ispiv-207	27	20	:	:	PUNCT
ispiv-207	27	21	180	180	NUM
ispiv-207	27	22	bubbles	bubble	NOUN
ispiv-207	27	23	)	)	PUNCT
ispiv-207	27	24	.	.	PUNCT
ispiv-207	28	1	the	the	DET
ispiv-207	28	2	inset	inset	NOUN
ispiv-207	28	3	shows	show	VERB
ispiv-207	28	4	an	an	DET
ispiv-207	28	5	exemplary	exemplary	ADJ
ispiv-207	28	6	bubble	bubble	NOUN
ispiv-207	28	7	image	image	NOUN
ispiv-207	28	8	generated	generate	VERB
ispiv-207	28	9	via	via	ADP
ispiv-207	28	10	shadowgraphy	shadowgraphy	NOUN
ispiv-207	28	11	.	.	PUNCT
ispiv-207	29	1	(	(	PUNCT
ispiv-207	29	2	b	b	X
ispiv-207	29	3	)	)	PUNCT
ispiv-207	29	4	raw	raw	ADJ
ispiv-207	29	5	image	image	NOUN
ispiv-207	29	6	of	of	ADP
ispiv-207	29	7	bubbles	bubble	NOUN
ispiv-207	29	8	and	and	CCONJ
ispiv-207	29	9	their	their	PRON
ispiv-207	29	10	glare	glare	NOUN
ispiv-207	29	11	points	point	NOUN
ispiv-207	29	12	.	.	PUNCT
ispiv-207	30	1	(	(	PUNCT
ispiv-207	30	2	c	c	X
ispiv-207	30	3	)	)	PUNCT
ispiv-207	30	4	exemplary	exemplary	ADJ
ispiv-207	30	5	tracks	track	NOUN
ispiv-207	30	6	of	of	ADP
ispiv-207	30	7	selected	select	VERB
ispiv-207	30	8	bubbles	bubble	NOUN
ispiv-207	30	9	.	.	PUNCT
ispiv-207	31	1	two	two	NUM
ispiv-207	31	2	glare	glare	ADJ
ispiv-207	31	3	points	point	NOUN
ispiv-207	31	4	per	per	ADP
ispiv-207	31	5	bubble	bubble	NOUN
ispiv-207	31	6	result	result	NOUN
ispiv-207	31	7	in	in	ADP
ispiv-207	31	8	pairs	pair	NOUN
ispiv-207	31	9	of	of	ADP
ispiv-207	31	10	similar	similar	ADJ
ispiv-207	31	11	tracks	track	NOUN
ispiv-207	31	12	.	.	PUNCT
ispiv-207	32	1	an	an	DET
ispiv-207	32	2	additional	additional	ADJ
ispiv-207	32	3	unknown	unknown	NOUN
ispiv-207	32	4	for	for	ADP
ispiv-207	32	5	the	the	DET
ispiv-207	32	6	present	present	ADJ
ispiv-207	32	7	single	single	ADJ
ispiv-207	32	8	-	-	PUNCT
ispiv-207	32	9	camera	camera	NOUN
ispiv-207	32	10	approach	approach	NOUN
ispiv-207	32	11	are	be	AUX
ispiv-207	32	12	the	the	DET
ispiv-207	32	13	errors	error	NOUN
ispiv-207	32	14	made	make	VERB
ispiv-207	32	15	while	while	SCONJ
ispiv-207	32	16	determining	determine	VERB
ispiv-207	32	17	the	the	DET
ispiv-207	32	18	bubble	bubble	NOUN
ispiv-207	32	19	-	-	PUNCT
ispiv-207	32	20	image	image	NOUN
ispiv-207	32	21	size	size	NOUN
ispiv-207	32	22	db	db	PROPN
ispiv-207	32	23	.	.	PROPN
ispiv-207	33	1	in	in	ADP
ispiv-207	33	2	the	the	DET
ispiv-207	33	3	present	present	ADJ
ispiv-207	33	4	set	set	NOUN
ispiv-207	33	5	-	-	PUNCT
ispiv-207	33	6	up	up	ADP
ispiv-207	33	7	the	the	DET
ispiv-207	33	8	light	light	ADJ
ispiv-207	33	9	source	source	NOUN
ispiv-207	33	10	is	be	AUX
ispiv-207	33	11	placed	place	VERB
ispiv-207	33	12	perpendicular	perpendicular	ADJ
ispiv-207	33	13	to	to	ADP
ispiv-207	33	14	the	the	DET
ispiv-207	33	15	camera(s	camera(s	PROPN
ispiv-207	33	16	)	)	PUNCT
ispiv-207	33	17	.	.	PUNCT
ispiv-207	34	1	as	as	SCONJ
ispiv-207	34	2	such	such	DET
ispiv-207	34	3	the	the	DET
ispiv-207	34	4	bubble	bubble	NOUN
ispiv-207	34	5	image	image	NOUN
ispiv-207	34	6	consists	consist	VERB
ispiv-207	34	7	of	of	ADP
ispiv-207	34	8	two	two	NUM
ispiv-207	34	9	glare	glare	NOUN
ispiv-207	34	10	points	point	NOUN
ispiv-207	34	11	with	with	ADP
ispiv-207	34	12	a	a	DET
ispiv-207	34	13	glare	glare	NOUN
ispiv-207	34	14	-	-	PUNCT
ispiv-207	34	15	point	point	NOUN
ispiv-207	34	16	spacing	space	VERB
ispiv-207	34	17	dg	dg	X
ispiv-207	34	18	=	=	SYM
ispiv-207	34	19	√	√	PROPN
ispiv-207	34	20	2/2db	2/2db	NUM
ispiv-207	34	21	;	;	PUNCT
ispiv-207	34	22	see	see	VERB
ispiv-207	34	23	figure	figure	NOUN
ispiv-207	34	24	2(b	2(b	NUM
ispiv-207	34	25	)	)	PUNCT
ispiv-207	34	26	.	.	PUNCT
ispiv-207	35	1	classical	classical	ADJ
ispiv-207	35	2	piv	piv	NOUN
ispiv-207	35	3	and	and	CCONJ
ispiv-207	35	4	ptv	ptv	X
ispiv-207	35	5	utilize	utilize	VERB
ispiv-207	35	6	gaussian	gaussian	ADJ
ispiv-207	35	7	peak	peak	NOUN
ispiv-207	35	8	fitting	fitting	ADJ
ispiv-207	35	9	to	to	PART
ispiv-207	35	10	approximate	approximate	VERB
ispiv-207	35	11	particle	particle	NOUN
ispiv-207	35	12	position	position	NOUN
ispiv-207	35	13	at	at	ADP
ispiv-207	35	14	0.1px	0.1px	NUM
ispiv-207	35	15	accuracy	accuracy	NOUN
ispiv-207	35	16	.	.	PUNCT
ispiv-207	36	1	however	however	ADV
ispiv-207	36	2	,	,	PUNCT
ispiv-207	36	3	as	as	SCONJ
ispiv-207	36	4	the	the	DET
ispiv-207	36	5	bubble	bubble	NOUN
ispiv-207	36	6	glare	glare	NOUN
ispiv-207	36	7	points	point	NOUN
ispiv-207	36	8	have	have	VERB
ispiv-207	36	9	a	a	DET
ispiv-207	36	10	non	non	ADJ
ispiv-207	36	11	-	-	ADJ
ispiv-207	36	12	gaussian	gaussian	ADJ
ispiv-207	36	13	brightness	brightness	NOUN
ispiv-207	36	14	distribution	distribution	NOUN
ispiv-207	36	15	,	,	PUNCT
ispiv-207	36	16	larger	large	ADJ
ispiv-207	36	17	errors	error	NOUN
ispiv-207	36	18	are	be	AUX
ispiv-207	36	19	expected	expect	VERB
ispiv-207	36	20	.	.	PUNCT
ispiv-207	37	1	to	to	PART
ispiv-207	37	2	quantify	quantify	VERB
ispiv-207	37	3	these	these	DET
ispiv-207	37	4	errors	error	NOUN
ispiv-207	37	5	that	that	PRON
ispiv-207	37	6	are	be	AUX
ispiv-207	37	7	introduced	introduce	VERB
ispiv-207	37	8	by	by	ADP
ispiv-207	37	9	falsely	falsely	ADV
ispiv-207	37	10	estimating	estimate	VERB
ispiv-207	37	11	db	db	PROPN
ispiv-207	37	12	,	,	PUNCT
ispiv-207	37	13	a	a	DET
ispiv-207	37	14	starting	start	VERB
ispiv-207	37	15	vortex	vortex	NOUN
ispiv-207	37	16	generated	generate	VERB
ispiv-207	37	17	by	by	ADP
ispiv-207	37	18	the	the	DET
ispiv-207	37	19	openjet	openjet	NOUN
ispiv-207	37	20	wind	wind	NOUN
ispiv-207	37	21	tunnel	tunnel	NOUN
ispiv-207	37	22	is	be	AUX
ispiv-207	37	23	captured	capture	VERB
ispiv-207	37	24	via	via	ADP
ispiv-207	37	25	two	two	NUM
ispiv-207	37	26	cameras	camera	NOUN
ispiv-207	37	27	(	(	PUNCT
ispiv-207	37	28	figure	figure	NOUN
ispiv-207	37	29	2c	2c	NUM
ispiv-207	37	30	)	)	PUNCT
ispiv-207	37	31	.	.	PUNCT
ispiv-207	38	1	by	by	ADP
ispiv-207	38	2	recording	record	VERB
ispiv-207	38	3	the	the	DET
ispiv-207	38	4	same	same	ADJ
ispiv-207	38	5	bubble	bubble	NOUN
ispiv-207	38	6	from	from	ADP
ispiv-207	38	7	two	two	NUM
ispiv-207	38	8	different	different	ADJ
ispiv-207	38	9	perspectives	perspective	NOUN
ispiv-207	38	10	(	(	PUNCT
ispiv-207	38	11	black	black	ADJ
ispiv-207	38	12	and	and	CCONJ
ispiv-207	38	13	purple	purple	ADJ
ispiv-207	38	14	cameras	camera	NOUN
ispiv-207	38	15	in	in	ADP
ispiv-207	38	16	figure	figure	NOUN
ispiv-207	38	17	1a	1a	NOUN
ispiv-207	38	18	)	)	PUNCT
ispiv-207	38	19	,	,	PUNCT
ispiv-207	38	20	the	the	DET
ispiv-207	38	21	bubble	bubble	NOUN
ispiv-207	38	22	positions	position	NOUN
ispiv-207	38	23	can	can	AUX
ispiv-207	38	24	be	be	AUX
ispiv-207	38	25	determined	determine	VERB
ispiv-207	38	26	in	in	ADP
ispiv-207	38	27	two	two	NUM
ispiv-207	38	28	ways	way	NOUN
ispiv-207	38	29	:	:	PUNCT
ispiv-207	38	30	(	(	PUNCT
ispiv-207	38	31	i	i	NOUN
ispiv-207	38	32	)	)	PUNCT
ispiv-207	38	33	by	by	ADP
ispiv-207	38	34	using	use	VERB
ispiv-207	38	35	two	two	NUM
ispiv-207	38	36	perspectives	perspective	NOUN
ispiv-207	38	37	and	and	CCONJ
ispiv-207	38	38	photogrammetry	photogrammetry	NOUN
ispiv-207	38	39	;	;	PUNCT
ispiv-207	38	40	and	and	CCONJ
ispiv-207	38	41	(	(	PUNCT
ispiv-207	38	42	b	b	NOUN
ispiv-207	38	43	)	)	PUNCT
ispiv-207	38	44	equation	equation	NOUN
ispiv-207	38	45	(	(	PUNCT
ispiv-207	38	46	1	1	NUM
ispiv-207	38	47	)	)	PUNCT
ispiv-207	38	48	.	.	PUNCT
ispiv-207	39	1	the	the	DET
ispiv-207	39	2	results	result	NOUN
ispiv-207	39	3	of	of	ADP
ispiv-207	39	4	both	both	DET
ispiv-207	39	5	approaches	approach	NOUN
ispiv-207	39	6	are	be	AUX
ispiv-207	39	7	compared	compare	VERB
ispiv-207	39	8	and	and	CCONJ
ispiv-207	39	9	provide	provide	VERB
ispiv-207	39	10	an	an	DET
ispiv-207	39	11	estimate	estimate	NOUN
ispiv-207	39	12	of	of	ADP
ispiv-207	39	13	the	the	DET
ispiv-207	39	14	accuracy	accuracy	NOUN
ispiv-207	39	15	of	of	ADP
ispiv-207	39	16	the	the	DET
ispiv-207	39	17	single	single	ADJ
ispiv-207	39	18	-	-	PUNCT
ispiv-207	39	19	camera	camera	NOUN
ispiv-207	39	20	approach	approach	NOUN
ispiv-207	39	21	first	first	ADV
ispiv-207	39	22	suggested	suggest	VERB
ispiv-207	39	23	in	in	ADP
ispiv-207	39	24	hou	hou	PROPN
ispiv-207	39	25	et	et	PROPN
ispiv-207	39	26	al	al	PROPN
ispiv-207	39	27	.	.	PROPN
ispiv-207	40	1	(	(	PUNCT
ispiv-207	40	2	2021	2021	NUM
ispiv-207	40	3	)	)	PUNCT
ispiv-207	40	4	.	.	PUNCT
ispiv-207	41	1	references	reference	NOUN
ispiv-207	41	2	hou	hou	PROPN
ispiv-207	41	3	j	j	PROPN
ispiv-207	41	4	,	,	PUNCT
ispiv-207	41	5	kaiser	kaiser	PROPN
ispiv-207	41	6	f	f	PROPN
ispiv-207	41	7	,	,	PUNCT
ispiv-207	41	8	sciacchitano	sciacchitano	VERB
ispiv-207	41	9	a	a	PRON
ispiv-207	41	10	,	,	PUNCT
ispiv-207	41	11	and	and	CCONJ
ispiv-207	41	12	rival	rival	ADJ
ispiv-207	41	13	de	de	X
ispiv-207	41	14	(	(	PUNCT
ispiv-207	41	15	2021	2021	NUM
ispiv-207	41	16	)	)	PUNCT
ispiv-207	41	17	a	a	DET
ispiv-207	41	18	novel	novel	ADJ
ispiv-207	41	19	single	single	ADJ
ispiv-207	41	20	-	-	PUNCT
ispiv-207	41	21	camera	camera	NOUN
ispiv-207	41	22	approach	approach	NOUN
ispiv-207	41	23	to	to	ADP
ispiv-207	41	24	large	large	ADJ
ispiv-207	41	25	-	-	PUNCT
ispiv-207	41	26	scale	scale	NOUN
ispiv-207	41	27	,	,	PUNCT
ispiv-207	41	28	threedimensional	threedimensional	ADJ
ispiv-207	41	29	particle	particle	NOUN
ispiv-207	41	30	tracking	tracking	NOUN
ispiv-207	41	31	based	base	VERB
ispiv-207	41	32	on	on	ADP
ispiv-207	41	33	glare	glare	NOUN
ispiv-207	41	34	-	-	PUNCT
ispiv-207	41	35	point	point	NOUN
ispiv-207	41	36	spacing	spacing	NOUN
ispiv-207	41	37	.	.	PUNCT
ispiv-207	42	1	experiments	experiment	NOUN
ispiv-207	42	2	in	in	ADP
ispiv-207	42	3	fluids	fluid	NOUN
ispiv-207	42	4	62:100	62:100	PROPN
ispiv-207	42	5	kähler	kähler	PROPN
ispiv-207	42	6	cj	cj	NOUN
ispiv-207	42	7	,	,	PUNCT
ispiv-207	42	8	fuchs	fuchs	PROPN
ispiv-207	42	9	t	t	PROPN
ispiv-207	42	10	,	,	PUNCT
ispiv-207	42	11	mutsch	mutsch	PROPN
ispiv-207	42	12	b	b	PROPN
ispiv-207	42	13	,	,	PUNCT
ispiv-207	42	14	and	and	CCONJ
ispiv-207	42	15	hain	hain	PROPN
ispiv-207	42	16	r	r	PROPN
ispiv-207	42	17	(	(	PUNCT
ispiv-207	42	18	2020	2020	NUM
ispiv-207	42	19	)	)	PUNCT
ispiv-207	42	20	school	school	NOUN
ispiv-207	42	21	education	education	NOUN
ispiv-207	42	22	during	during	ADP
ispiv-207	42	23	the	the	DET
ispiv-207	42	24	sars	sar	NOUN
ispiv-207	42	25	-	-	PUNCT
ispiv-207	42	26	cov-2	cov-2	NOUN
ispiv-207	42	27	pandemic	pandemic	NOUN
ispiv-207	42	28	-	-	PUNCT
ispiv-207	42	29	which	which	DET
ispiv-207	42	30	concept	concept	NOUN
ispiv-207	42	31	is	be	AUX
ispiv-207	42	32	safe	safe	ADJ
ispiv-207	42	33	,	,	PUNCT
ispiv-207	42	34	feasible	feasible	ADJ
ispiv-207	42	35	and	and	CCONJ
ispiv-207	42	36	environmentally	environmentally	ADV
ispiv-207	42	37	sound	sound	ADJ
ispiv-207	42	38	?	?	PUNCT
ispiv-207	42	39	.	.	PUNCT
ispiv-207	43	1	medrxiv	medrxiv	PROPN
ispiv-207	43	2	rosi	rosi	PROPN
ispiv-207	43	3	ga	ga	PROPN
ispiv-207	43	4	,	,	PUNCT
ispiv-207	43	5	sherry	sherry	PROPN
ispiv-207	43	6	m	m	PROPN
ispiv-207	43	7	,	,	PUNCT
ispiv-207	43	8	kinzel	kinzel	VERB
ispiv-207	43	9	m	m	PROPN
ispiv-207	43	10	,	,	PUNCT
ispiv-207	43	11	and	and	CCONJ
ispiv-207	43	12	rival	rival	ADJ
ispiv-207	43	13	de	de	X
ispiv-207	43	14	(	(	PUNCT
ispiv-207	43	15	2014	2014	NUM
ispiv-207	43	16	)	)	PUNCT
ispiv-207	43	17	characterizing	characterize	VERB
ispiv-207	43	18	the	the	DET
ispiv-207	43	19	lower	low	ADJ
ispiv-207	43	20	log	log	NOUN
ispiv-207	43	21	region	region	NOUN
ispiv-207	43	22	of	of	ADP
ispiv-207	43	23	the	the	DET
ispiv-207	43	24	atmospheric	atmospheric	ADJ
ispiv-207	43	25	surface	surface	NOUN
ispiv-207	43	26	layer	layer	NOUN
ispiv-207	43	27	via	via	ADP
ispiv-207	43	28	large	large	ADJ
ispiv-207	43	29	-	-	PUNCT
ispiv-207	43	30	scale	scale	NOUN
ispiv-207	43	31	particle	particle	NOUN
ispiv-207	43	32	tracking	tracking	NOUN
ispiv-207	43	33	velocimetry	velocimetry	NOUN
ispiv-207	43	34	.	.	PUNCT
ispiv-207	44	1	exp	exp	NOUN
ispiv-207	44	2	fluids	fluid	NOUN
ispiv-207	44	3	55:1736	55:1736	NUM
ispiv-207	44	4	schanz	schanz	NOUN
ispiv-207	45	1	d	d	NOUN
ispiv-207	45	2	,	,	PUNCT
ispiv-207	45	3	gesemann	gesemann	PROPN
ispiv-207	45	4	s	s	PART
ispiv-207	45	5	,	,	PUNCT
ispiv-207	45	6	and	and	CCONJ
ispiv-207	45	7	schröder	schröder	VERB
ispiv-207	45	8	a	a	DET
ispiv-207	45	9	(	(	PUNCT
ispiv-207	45	10	2016	2016	NUM
ispiv-207	45	11	)	)	PUNCT
ispiv-207	45	12	shake	shake	NOUN
ispiv-207	45	13	-	-	PUNCT
ispiv-207	45	14	the	the	DET
ispiv-207	45	15	-	-	PUNCT
ispiv-207	45	16	box	box	NOUN
ispiv-207	45	17	:	:	PUNCT
ispiv-207	45	18	lagrangian	lagrangian	ADJ
ispiv-207	45	19	particle	particle	NOUN
ispiv-207	45	20	tracking	tracking	NOUN
ispiv-207	45	21	at	at	ADP
ispiv-207	45	22	high	high	ADJ
ispiv-207	45	23	particle	particle	NOUN
ispiv-207	45	24	image	image	NOUN
ispiv-207	45	25	densities	density	NOUN
ispiv-207	45	26	.	.	PUNCT
ispiv-207	46	1	experiments	experiment	NOUN
ispiv-207	46	2	in	in	ADP
ispiv-207	46	3	fluids	fluid	NOUN
ispiv-207	46	4	57:70	57:70	NUM
ispiv-207	46	5	toloui	toloui	NOUN
ispiv-207	46	6	m	m	PROPN
ispiv-207	46	7	,	,	PUNCT
ispiv-207	46	8	riley	riley	PROPN
ispiv-207	46	9	s	s	PROPN
ispiv-207	46	10	,	,	PUNCT
ispiv-207	46	11	hong	hong	PROPN
ispiv-207	46	12	j	j	PROPN
ispiv-207	46	13	,	,	PUNCT
ispiv-207	46	14	howard	howard	PROPN
ispiv-207	46	15	k	k	PROPN
ispiv-207	46	16	,	,	PUNCT
ispiv-207	46	17	chamorro	chamorro	PROPN
ispiv-207	46	18	lp	lp	PROPN
ispiv-207	46	19	,	,	PUNCT
ispiv-207	46	20	guala	guala	PROPN
ispiv-207	46	21	m	m	PROPN
ispiv-207	46	22	,	,	PUNCT
ispiv-207	46	23	and	and	CCONJ
ispiv-207	46	24	tucker	tucker	PROPN
ispiv-207	46	25	j	j	PROPN
ispiv-207	46	26	(	(	PUNCT
ispiv-207	46	27	2014	2014	NUM
ispiv-207	46	28	)	)	PUNCT
ispiv-207	46	29	measurement	measurement	NOUN
ispiv-207	46	30	of	of	ADP
ispiv-207	46	31	atmospheric	atmospheric	ADJ
ispiv-207	46	32	boundary	boundary	ADJ
ispiv-207	46	33	layer	layer	NOUN
ispiv-207	46	34	based	base	VERB
ispiv-207	46	35	on	on	ADP
ispiv-207	46	36	super	super	ADJ
ispiv-207	46	37	-	-	ADJ
ispiv-207	46	38	large	large	ADJ
ispiv-207	46	39	-	-	PUNCT
ispiv-207	46	40	scale	scale	NOUN
ispiv-207	46	41	particle	particle	NOUN
ispiv-207	46	42	image	image	NOUN
ispiv-207	46	43	velocimetry	velocimetry	NOUN
ispiv-207	46	44	using	use	VERB
ispiv-207	46	45	natural	natural	ADJ
ispiv-207	46	46	snowfall	snowfall	NOUN
ispiv-207	46	47	.	.	PUNCT
ispiv-207	47	1	exp	exp	NOUN
ispiv-207	47	2	fluids	fluid	NOUN
ispiv-207	47	3	55:1737	55:1737	NUM
ispiv-207	47	4	who	who	PRON
ispiv-207	47	5	(	(	PUNCT
ispiv-207	47	6	2020	2020	NUM
ispiv-207	47	7	)	)	PUNCT
ispiv-207	47	8	q&a	q&a	PROPN
ispiv-207	47	9	:	:	PUNCT
ispiv-207	47	10	ventilation	ventilation	NOUN
ispiv-207	47	11	and	and	CCONJ
ispiv-207	47	12	air	air	NOUN
ispiv-207	47	13	conditioning	conditioning	NOUN
ispiv-207	47	14	in	in	ADP
ispiv-207	47	15	public	public	ADJ
ispiv-207	47	16	spaces	space	NOUN
ispiv-207	47	17	and	and	CCONJ
ispiv-207	47	18	buildings	building	NOUN
ispiv-207	47	19	and	and	CCONJ
ispiv-207	47	20	covid-19	covid-19	PROPN
ispiv-207	47	21	available	available	ADJ
ispiv-207	47	22	at	at	ADP
ispiv-207	47	23	:	:	PUNCT
ispiv-207	47	24	www.who.int	www.who.int	NOUN
ispiv-207	47	25	.	.	PUNCT
ispiv-207	48	1	last	last	ADJ
ispiv-207	48	2	accessed	access	VERB
ispiv-207	48	3	:	:	PUNCT
ispiv-207	48	4	01/13/2021	01/13/2021	NUM