Abstract: A system comprising a server including a memory device having executable instructions stored therein and a processing device, in response to the executable instructions, configured to receive a content request from a destination webpage server, the content request including a Hypertext Transport Protocol (HTTP) header, identify a referrer from a referrer field of the HTTP header, the referrer indicating an originating webpage, determine a frequency the referrer has been identified from prior page requests in a given time period, compare the frequency with a configuration value indicating a max frequency for presentation of one or more content to content requests associated with the referrer, select content to be delivered to the destination webpage server based on the comparison, and modify the content to be delivered based at least on exhausting the max frequency for presentation of one or more content to content requests associated with the referrer.

Abstract: A stagnation sensing control for determining when a gas turbine engine has stagnated during a start phase of operation includes means for sampling the engine speed at a first predetermined point in time and means to hold the sampled speed in memory and further including means operative following a period of time to compare engine speed at the later point in time with the speed in memory and means operative if the speed increase is less than an established amount greater than the sampled speed in memory to produce an engine shutdown signal to operate engine starter and shut down circuits for terminating engine operation.

Abstract: A circuit for generating a potential indicative of torque. The circuit responds to the phase angle between the AC signals generated by two generating coils or magnetoelectric pickups, each excited by a toothed wheel. The two toothed wheels are connected to different points along a shaft transmitting power between an engine and its load. The windup or torsion of the shaft is proportional to torque; therefore, the relative phase angle of the signals from the two pickups is also proportional to torque. Each generating coil is connected to a high-gain input amplifier which generates a square-wave signal in phase with the signal from the coil. Each input amplifier triggers a pulse generator which generates a pulse the leading edge of which is in fixed phase relation to the pickup signal. The two pulse generator outputs are connected to a flip-flop circuit to generate a zero output signal during the interval between the two inputs to the flip-flop. The duty cycle of this signal is indicative of torque.