Mixed Strategies: Minimax/Maximin and Nash Equilibrium In the preceding lecture we analyzed maximin strategies. A maximin strategy is an assurance strategy: it achieves the best expected payoff a player can possibly assure himself, i.e., itâs themixture that yields a player his best worst-case expectation.
There are different types of restraints: Physical restraints â¢ worn by a patient to restrict movement. Chemical restraints â¢ medications used to control aggressive. or agitated behaviour. Confinement or. Environmental restraints. â¢ a change in the environment which. restricts movement from one area.
Others hold back organs that may naturally block the operative field to give the surgeon clear access. Instruments used to force tissues apart and then hold them in position, such as rib spreaders, may also be considered retractors. Ad. The two main types of surgical retractors are hand-held and self-retaining. Hand-held retractors are designed to be held by assistants during the surgical procedure. Self-retaining retractors can be adjusted and locked in place so they maintain their position without further manual intervention.