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.
variable. anything you can change or control in an experiment. Common examples include temperature, duration of the experiment, composition of a material, amount of light, etc. There are three kinds of variables in an experiment: controlled variables, independent variables and dependent variables.ontrolled variables, sometimes called constant variables. variables that are kept constant or unchanging. For example, if you are doing an experiment measuring the fizz released from different types of soda, you might control the size of the container so that all brands of soda would be in 12-oz cans.