Residential hoists and ceiling lifts help many people â for instance, seniors who want to remain in their own homes despite changes in their mobility, strength or agility; and parents of children with a disability who can no longer lift their children.f a wheeled hoist is to be used for transfers in and out of a bathtub, the bathtub should have legs or be raised from the floor the hoist frame will fit under the bathtub. Stationary Hoist. Stationary hoists are mounted to the floor or a wall.
Not to be confused with Control variable (programming) or Control variable (statistics). The control variable (or scientific constant) in scientific experimentation is the experimental element which is constant and unchanged throughout the course of the investigation.
A variable that remains unchanged or held constant to prevent its effects on the outcome and therefore may verify the behavior of and the relationship between independent and dependent variables. Supplement. Control variables are important in scientific experiments to test the validity of the results.For instance, in an experiment on Boyle's law, the temperature must be kept constant so that the outcome from the experiment can be regarded as valid.ontrol variables are important in scientific experiments to test the validity of the results. For instance, in an experiment on Boyle's law, the temperature must be kept constant so that the outcome from the experiment can be regarded as valid.