Abstract: Systems and methods for generating and rendering one or more images, such as in an animated image sequence, of the virtual multi-dimensional object on a display screen for testing a person's susceptibility to a Depth Inversion Illusion (“DII”). The methods also include collecting first information indicating the person's perceptual response to the DII; adjusting a strength of the DII by manipulating a texture that is mapped onto the virtual multi-dimensional object; collecting second information indicating the person's perceptual response to the DII; using the first and second information to determine differences between the person's perceptual responses to the DII and reference perception responses of a group of control subjects to the DII; and analyzing the differences to determine a severity of the person's mental illness or to assess therapeutic efficacy.

Abstract: A rectifier plant control system includes a stored program of a master control to control operation and monitor rectifier plant conditions. The master control is designed to cooperate with optional control systems to accomplish new operations without requiring modifications to the stored program control of the master control. One such optional control system permits accessing the master control from a remote location.The optional control system includes an associated stored program which is utilized by the master control to accomplish the option. This associated stored program is in an address field of the stored program of the master control and is executed by the master control.

Abstract: A DC power plant system has the operation of its individual rectifiers controlled by a stored program control system for the purpose of optimizing power efficiency. Load power requirements are compared with rated capacities of operating rectifiers of the system and individual rectifiers are turned on or off so that the plant efficiency is always maximized. Rectifiers are selected for turn on and off in the basis of their rated power capacity and their accumulated operating times.

Abstract: A current controlled switching type voltage regulator achieves voltage regulation by controlling an average current flow through the switching device. This current is sensed and transformed into a signal frequency. The signal frequency is counted to determine its average value and this count is compared to a variable current reference count which is continuously adjusted in response to an output voltage monitor which includes circuitry to generate an error count responsive to the deviation of the voltage output from a desired regulated value. In order to counteract instability problems inherent in current controlled switching type voltage regulators the transducer converting current into a signal frequency has a threshold characteristic to insure a definite fixed signal frequency at very low currents.