The present invention provides techniques for use in audience-related measurements, including hybrid techniques which include use of panel-based audience-related measurement information and census-based audience-related measurement information. Data from the machines is collected and transmitted by the machine to a remote server. A desorption promoting device can promote desorption of fuel vapor from the canister. The layer includes a compatibilizer, such as a maleic anhydride grafted polyethylene, and may also include plasticizers and impact modifiers. The non-rectifying conduction means may include a degenerate junction structure or a patterned metal layer.