A procedure mask is used for performing patient procedures, or when patients are in isolation to protect them from potential contaminants. They are used for 'respiratory etiquette' to prevent people from spreading germs via talking, coughing, or sneezing.
Rolling-wave planning is the process of project planning in waves as the project proceeds and later details become clearer; similar to the techniques used in agile software development approaches like Scrum.. Work to be done in the near term is based on high-level assumptions; also, high-level milestones are set.
Cash Balance Plans. A cash balance plan is a pension plan that has certain features of a 401(k) plan. A number of companies have converted their traditional pension plans into cash balance plans. This fact sheet describes cash balance plans and outlines the differences between a cash balance plan and a traditional pension plan, and between a cash balance plan and a 401(k) plan.