Disclosed is an interchangeable furniture skirt including a fitted base member tailored to fit a box spring, and a skirt removably engagable to the fitted base member with a slide fastener. Information for a communications service is provided to the user. The present invention can be applied to fabricate an integrated circuit of superconductor film, because the high temperature annealing process for the as-grown film of MgB2 is not needed. A total driving torque for all drives is determined from the normal force of the driven drive support rolls and proportionately transmitted to each support roll in such a way that a static base setting of the torque distribution is used as the basis for the specific load capacity of each drive support roll. The risk value is computed by evaluation of a function that considers a variety of historic, environmental, and systemic behaviors and conditions.