A process manager supports the interactive definition of multiple user groups having access to process application software, and for each group, the interactive definition of a respective group interface which is unique to the group. Some embodiments provide systems and methods for designing, building and using ultrasound probes having continuous arrays of ultrasound transducers which may have a substantially continuous concave curved shape in two or three dimensions. The CCD camera provides the optical image to a video display which also displays the scanning probe image, thus eliminating the need for eyepieces and allowing easy viewing of both the optical and scanning probe images simultaneously. Furthermore, this method of formation helps in precise control of fin-height in bulk FinFETs. Alternatively, when the sum is greater than the pacing escape interval, the pace escape interval is repeated. Auxiliary fuel is combusted in an auxiliary fuel combustor to produce auxiliary fuel combustion gases, and the lean fuel gases are heated with the auxiliary fuel combustion gases.