A gearshift to transmission controller interface is based on a controller area network and a gearshift interface interposed between the gearshift and associated displays and the network bus. More particularly, the present invention relates to an absorbent composite material for use in sanitary absorbent products such as sanitary napkins, pantiliners, diapers, adult incontinence products, and the like. A maximum of an objective function J is determined over a two-dimensional region parameterized by frequency offset v and phase offset w. This is particularly useful, for example, in connecting the buried emitter region to a power supply at a reduced resistance.