A delivery system for various functional compounds is disclosed. The CCD solid-state image includes a charge storage section between a vertical transfer register and a horizontal transfer register. The inhibition is accomplished by, for example, inhibiting the activity of a glycosyltransferase involved in synthesis of the respective sialyl galactoside. The node can determine a reputation value for each of the candidate outbound faces based on reputation information stored in association with the Interest’s name or name prefix, and selects a candidate outbound face with a reputation value exceeding a first predetermined threshold. Inverse scattering technique is applied using the composite radiation pattern and the desired collimation pattern to determine the precise shape of the lens. More particularly, is described a system and method for enabling a remotely located candidate to effectively complete an e-learning application using a handheld device.