Systems and methods for scanning by remotes in multipoint-to-point communication using orthogonal frequency division multiplexing are provided. The lid handle may have a check valve having an open-close flange, a top unit, a central hole flange, a connecting section connecting the open-close flange with the central hold flange to form a relief path, and a flange formed in between the top unit and the open-close flange. An igniter is placed on the nanoenergetic material. The relay device selectively relays the broadcasting signal as input to any one of the respective signal processing paths and the direct signal path. If the second signal is time-delayed with respect to the first signal, at least the previous curve of the first signal andor the previous curve of the second signal is taken into account. Generally, the innovation promotes professional development by providing mechanisms to promote volunteer opportunities within business units of an organization.