There are multiple definitions:

1. pyridyl disulfide acrylate(English)

2. Plan-Do-Study-Act(English)

   • four steps used in the Model for Improvement, developed to enhance organization performance; a cycle of developing, testing, measuring and implementing changes that result in improvement
   • HOUDINI, AMS
   • Practical shorthand, Health care, Organization (management), Quality and outcomes, Safety and health
   • http://www.ihi.…tWorksheet.aspx
   • https://doi.org…jqs-2013-001862
   • https://doi.org…757177412436818