In the last three decades there has been an increasing emphasis on the importance of the use of fidelity assessment on improving the science of psychological, social, and behavioral research.
A cleanroom is an area or enclosure in which the air has to be cleaned to a defined particle limit, usually in particles per cubic foot. In the United States most cleanrooms are discussed in terms of Classification Limits.
Professional house cleaner providing service at a customer's home. A cleaner is a type of industrial or domestic worker who cleans homes or commercial premises for payment. Cleaners may specialise in cleaning particular things or places, such as window cleaners. Cleaners often work when the people who otherwise occupy the space are not around. They may clean offices at night or houses during the workday.