Abstract: A method and system for determining whether a situation is logically true or false upon occurrence of an event uses conditions associated with the situation in combination with current values of parameters related thereto to create and maintain a database of current thresholds each corresponding to respective limits which characterize the situation and at least one of which is a composite threshold that encapsulates multiple conditions that can be directly compared with a single parameter associated with an event. Responsive to an event, successive parameters associated with the event are compared with respective ones of the current thresholds until either there are no more thresholds to be compared or until it can be definitively established that the situation is logically true or false. Prior to processing a subsequent event, the current database thresholds are updated.

Abstract: A defensive system for use against hostile elements for example in motor vehicles or aircraft comprising a cloth fabric having secured thereto first and second main, electrical conductors, first and second sets of flexible, substantially uninsulated branch electrical conductors secured to the fabric and respectively electrically connected to and transversely directed with respect to the main conductors and spaced apart along the lengths thereof with the first branch conductors interleaved with respect to the second branch conductors and spaced therefrom, a pulsed electric power supply and switch control means for coupling opposite poles of the supply to the main conductors so as to create between adjacent first and second branch conductors a high, intermittent potential difference designed to be short-circuited upon contact by a hostile element.