Methods and systems for adjudicating claims in health services environments are presented. A linear array of phase shifting elements in the MEMS device creates a linear image which is scanned to form a two dimensional scene. The invention is of particular utility with personal digital assistants, which generally have small displays and limited storage capacity and communication bandwidth in comparison to personal computers. A congestion notification message indicating the identified packet flow is then propagated to upstream switches, which are upstream from the first switch in the network. The semiconductor memory device not only acts as \u201cdrive transistor\u201d to drive the lighting device, but also is capable of adjusting the threshold voltage thereof.