Techniques for identification of an authority-type leader in a social network based on reputation are described. Application specific to the actuating of control surfaces incorporated into a thin airfoil. An interior of the bracket is formed with notch members, with a quantity corresponding to the number of fans. In an alternative aspect, cells may be filled with an encapsulant, and comprise a transparent cover coated with or filled with phosphors to control light characteristics of the light-emitting device.