A microelectronic assembly can include a substrate having first and second surfaces and an aperture extending therebetween, the substrate having terminals. The symbols of the received signal vectors are combined, forming a combined received signal vector that may be treated as a single received signal vector. A tool for applying tape to a chuck, as described herein, facilitates this method. Then, the gas-phase oxygen concentration in the heap is maintained at a low level. The machine includes a towing tongue and the electrically insulating insert is constructed and arranged in the tongue so as to provide a gap between separate metal portions of the tongue. Specifically, the cured product of the resin composition has a refractive index greater than or equal to that of epoxy resins, exhibits excellent heat resistance and light resistance, and has thermal stress relaxation properties.