A method and system are provided for non-contact evaluation of a machined surface of a cast-metal part, including a vision-based porosity inspection station. When the initial level of authentication is not sufficient for the service channel or protected resource, the apparatus generates a challenge to the user device with at least one additional authenticator and determines an achieved level of authentication based on the further authentication information. Also disclosed herein are cyclic derivatives of gamma-functional aminoorganic silanes. Thus, an intelligent set of edit commands can be provided that is related to the raster image being edited. The method involves the use of a vacuum impregnation process for a sol-gel film, to facilitate effective deposition of high-permittivity materials within a trench in a semiconductor substrate, to provide a trench capacitor having a high capacitance while being efficient in utilization of semiconductor real estate. In a second embodiment, an electronic control system regulates the throttle by calculating the optimal throttle setting based on measurements derived from a speed sensor, a steering angle sensor and, optionally, a throttle position sensor.