Disclosed is an apparatus, method, and program product for identifying and grouping threads that have interdependent data access needs. A thermoelectric coating can be applied on a tubular heat exchanger wall utilizing a thermoelectric coating process in order to capture waste heat from a heat source and generate an electrical energy. The projection optical system enlarges and projects an image formed by a display element, and the optical path changing unit is disposed on the bottom of the cabinet to reflect the image enlarged and projected by the projection optical system. A cap connects to at least one of the plates and overlays an end of the sheathing. Each subarray phase control submodule recursively elaborates weights to control phase shifters. The undercarriage includes a plurality of tracks for propelling the machine along the ground.