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Robot."],"published-print":{"date-parts":[[2012,9]]},"abstract":"<jats:p> In digital human modeling (DHM), the analysis of postural stability has five main goals: to determine if a posture is stable or unstable through an explicit criterion; to quantify the level of stability or provide a margin of stability that accounts for the height of the center of mass (COM) above the support plane(s); to be valid in the presence of externally applied forces and moments; be able to assess stability when multiple noncoplanar support planes exist, as is the case with seated postures; and to give insight into the support reaction force (SRF) distribution. To date, there is not a method for analyzing stability that can effectively meet each goal. This paper presents a new stability criterion and stability analysis that accomplishes each intended goal. The stability analysis is derived from the calculation of joint torque using the recursive Lagrangian dynamic formulation. A 56-degree-of-freedom (DOF) articulated digital human model is used to model seated postures to demonstrate the proposed stability criterion. Different given postures with different external load cases are presented. <\/jats:p>","DOI":"10.1142\/s0219843612500156","type":"journal-article","created":{"date-parts":[[2012,7,24]],"date-time":"2012-07-24T06:39:40Z","timestamp":1343111980000},"page":"1250015","source":"Crossref","is-referenced-by-count":7,"title":["A NEW STABILITY CRITERION FOR HUMAN SEATED TASKS WITH GIVEN POSTURES"],"prefix":"10.1142","volume":"09","author":[{"given":"BRADLEY","family":"HOWARD","sequence":"first","affiliation":[{"name":"Department of Mechanical Engineering, Texas Tech University, Lubbock, TX 79409, USA"}]},{"given":"JINGZHOU","family":"YANG","sequence":"additional","affiliation":[{"name":"Department of Mechanical Engineering, Texas Tech University, Lubbock, TX 79409, USA"}]}],"member":"219","published-online":{"date-parts":[[2012,10,19]]},"reference":[{"key":"rf1","doi-asserted-by":"publisher","DOI":"10.1016\/S1350-4533(01)00052-2"},{"key":"rf2","doi-asserted-by":"publisher","DOI":"10.1016\/j.apergo.2006.11.001"},{"key":"rf3","doi-asserted-by":"publisher","DOI":"10.1080\/10400435.1993.10132213"},{"key":"rf4","doi-asserted-by":"publisher","DOI":"10.1016\/S0003-6870(98)00018-0"},{"key":"rf5","doi-asserted-by":"publisher","DOI":"10.1682\/JRRD.1992.10.0021"},{"key":"rf6","doi-asserted-by":"publisher","DOI":"10.1016\/S0003-6870(01)00013-8"},{"key":"rf7","doi-asserted-by":"publisher","DOI":"10.1080\/10255840410001727832"},{"key":"rf8","doi-asserted-by":"publisher","DOI":"10.1016\/S0141-9382(02)00005-7"},{"key":"rf9","doi-asserted-by":"publisher","DOI":"10.1016\/0169-8141(91)90068-W"},{"key":"rf10","volume":"11","author":"Reidel S. 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