A method for electronically generating high-quality feature vectors that can be used in connection with electronic data processing systems implementing Maximum Entropy or other statistical models to accurately normalize abbreviations in text such as medical records. The simulated eye assembly includes an eye portion, and a driving device assembly. Another aspect of the present invention provides a technique for implementing load balancing and resource allocation assignments among peers in a redundant, multiple NAT router environment. The linear transformation matrix A is derived from matrix C. A PCD may also enter a group PTT mode wherein a PTT server exercises floor control between an initiating PCD and multiple target PCDs. The wired server stores an IP address of at least one mobile web server.