Abstract: A cleaning system (100) for preventing the build-up of fats, oils and/or greases in extraction and ventilation ducts. The cleaning system comprises: a pressurised gas source (102), a fluid supply tank (104) for containing a cleaning fluid, the fluid supply tank comprising a tank gas inlet (110) fluidly connected to the pressurised gas source and a tank fluid outlet (112), a nozzle (106), wherein the nozzle comprises a nozzle gas inlet (114), a nozzle fluid inlet (116) and a nozzle outlet (118), and wherein the pressurised gas source (102) is fluidly connected to the nozzle gas inlet (114) and the fluid supply tank outlet (112) is fluidly connected to the nozzle fluid inlet (116), and a controller (108), the controller configured to control flow of gas from the pressurised gas source to the fluid supply tank gas inlet, and to the nozzle gas inlet.

Abstract: Persistent storage contains data generated by applications, parameters of a telemetry application, and a tree-like arrangement of calculations that estimates a present value. Processor(s) are configured to cause the telemetry application to: obtain a first set of data generated by a first application; obtain a second set of data generated by a second application, the first and second applications belonging to an application class; determine a first present value for the first application based on the arrangement, the first set of data, and the parameters; determine a second present value for the second application based on the arrangement, the second set of data, and the parameters; determine a class present value of the application class based on the arrangement, the first present value, and the second present value; and determine an overall present value based on the arrangement, the class present value, and present values of other application classes.

Abstract: A system for transferring a customer's account information from one account to a new account is described. The system utilizes a switch kit application and associated system that can determine services at the old account and facilitate the transfer of these services to the new account.

Abstract: A system for allowing interaction between individuals in an establishment and individuals remote from establishment is disclosed. The system has a server for transferring graphical and textual data to and from the establishment. A plurality of customer terminals are located in the establishment and coupled to the server. The customer terminals are used for ordering items in the establishment and for interacting with others in and remote from the establishment. At least one employee terminal is coupled to the server. The employee terminal is used for displaying items ordered by individuals in the establishment. This will allow employees to provide faster service to individuals in the establishment. A plurality of establishment video cameras are coupled to the server. The video cameras are used for transmitting graphical images from inside the establishment.