Abstract: A system for generating a dynamic tree trimming schedule, comprising a network vegetation model system operating on a first processor and configured to receive a network vegetation model and weather forecast data and to generate a real-time tree trimming schedule as a function of the network vegetation model and weather forecast data and a remote user interface operating on a second processor and configured to receive the real-time tree trimming schedule and to generate one or more user interface controls as a function of the real-time tree trimming schedule.

Abstract: An arrangement for permitting communication among a plurality of stations on a single serial data communications bus. Each station is provided a choice between two modes of operation. All stations ordinarily operate in a normal mode, seeking access to the serial bus upon occurrence of a democratic time window. In the normal mode, each station is given an opportunity to issue a single transmission before any one station is permitted to issue a second transmission. Should any station require transmission of an urgent message, that station may seek access during an autocratic time window. Within any single round of bus arbitration, all autocratic time windows occur prior to the first democratic time window.