Mean variance analysis is a component of modern portfolio theory, which assumes investors make rational decisions, and that for increased risk they expect a higher return. Next Up.
sitâ²-in`. 1. an organized passive protest against racial segregation in which the demonstrators occupy seats prohibited to them in public places. 2. any organized protest in which the demonstrators occupy and refuse to leave a public place.
Sit-to-stand lifts are designed to help patients who lack the strength or muscle control to rise to a standing position from a bed, wheelchair, chair, or commode. They use straps, vests, or belts (as opposed to slings) positioned around the patient's back usually fitting under their arms.