An industrial hanger assembly for attaching to a truss. The nanoparticles have capping agents attached onto the nanoparticle surfaces and a precursor solution of capped nanoparticles and polymer is prepared and dried to obtain the nanocomposites. At least one of the modules includes a plurality of fuel cells. Transconductance amplifiers are provided within the common-mode feedback loop to provide greater dynamic range to the charging and discharging of the differential output nodes. The attribute includes one or more of a skill, job specialty code, job title, company, department, and division.