id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
work_thnqyefrcjezfejmze7uwdqueq	Hiroki Tamura	A Study on the Lumbar Burden Evaluation of Work using One Smartphone	2018	7	.pdf	application/pdf	4248	416	59	Hiroki Tamura1, Keiko Sakurai1,*, Koichi Tanno2, Yasufumi Fuse3 cannot be measured either in real time or continuously, so estimation of a lumbar burden with JACK is unsuitable in agricultural user's state judgment: stand, walking, crouching, sitting and rotation. can be determined by the state and the estimated lumbar burden In this paper, we propose the human lumbar burden evaluation method and state estimation system using a smartphone and estimating posture (Stand up, Sit down, Crouch, Walk, etc.,) of the subjects, (2) "Lumbar burden estimation" has a function to estimate the angle of the waist from the angle of the subject's upper body and calculate the lumbar burden in combination with From the JACK measurement results, there was an increasing tendency in the transitions of the lumbar burden during rotation, but The state determination is necessary for estimating lumbar burden is performed using the thigh inclination angle 	./cache/work_thnqyefrcjezfejmze7uwdqueq.pdf	./txt/work_thnqyefrcjezfejmze7uwdqueq.txt