A method for providing energy-efficient temperature and humidity control with uniform ventilation air distribution in a constant-volume zoned heating and cooling systems. Methods of treatment include the treatment of neuropsychiatric conditions, such as depression. By attaching the stationary plate and the sliding base to a door frame and a door respectively, the resilient body pushes the pressing plate to shut the door automatically. In specific embodiments, the method includes adjusting, in real time, parameters controlling said polishing of the surface in response to the measurement data. The output of the test circuit provides the measurement of analog leakage to a digital tester for testing of chips having the circuit during manufacturing test.