Abstract: A network appliance can maintain an active set indicating active backends for a load balanced network service. To monitor the health of the backends, the network appliance can transmit a network packet to a backend that is one of the active backends in the active set and can receive a response packet responsive to the network packet. An invariant hash can be calculated from the response packet using fields that are the same when the response is a normal response (e.g. not an error response) from a healthy backend. If the packet indicates an error or is otherwise indicative of a problem, the network appliance can determine, using the invariant hash, that the response packet does not match an expected result associated with the backend. Based on the error, the number of network packets resulting in errors, etc., the backend can be removed from the active set.

Abstract: A system enforces administrative domain wide policies specified using labels that describe characteristics of servers or services. A label comprises a label value describing a characteristic of one or more computing devices for a label dimension. The system infers label values for devices using features describing characteristics of the computing devices, for example, hardware characteristics, software characteristics, or connectivity characteristics. The system obtains communication information indicating the destination, source, volume, and duration of network traffic between computing devices. The system identifies providers of services and consumers of services based on the communication information. The system generates rules for regulating communications between computing devices and enforces the rules.

Abstract: A system enforces administrative domain wide policies specified using labels that describe characteristics of servers or services. A label comprises a label value describing a characteristic of one or more computing devices for a label dimension. The system infers label values for devices using features describing characteristics of the computing devices, for example, hardware characteristics, software characteristics, or connectivity characteristics. The system obtains communication information indicating the destination, source, volume, and duration of network traffic between computing devices. The system identifies providers of services and consumers of services based on the communication information. The system generates rules for regulating communications between computing devices and enforces the rules.

Abstract: This disclosure is directed to a glass inspection system for inspecting a transparent web of glass of indeterminate length as it moves along a predetermined linear path of travel at a predetermined, regulated and/or controlled speed. The web of glass is illuminated such that any defect in or upon the glass web appears as a shadow moving upon a relatively white/bright background. A number of high resolution CCD cameras "look" downwardly through the transparent glass web and are focused upon the white background to detect moving defect shadows. Each camera creates a succession of image fields or frames through which a shadow of a defect will pass as the defect moves with the glass web through the scan area of each CCD camera. Each image field defines a nominal light area and each defect shadow is depicted as a defect area of light differing from the nominal light of each image field area.

Abstract: A suspension system for an automotive vehicle having a sprung portion and an unsprung portions. The suspension system includes a leaf spring for insulating the transmission of road vibration from the unsprung portion of the automotive vehicle to the sprung portion of the automotive vehicle, the open span of the leaf spring being susceptible to resonance vibration. The suspension system further includes a resonance vibration damper which is able to attenuate resonance vibration of the leaf spring.

Abstract: A peanut combine has a plurality of relatively large threshing cylinders arranged in series with a breastplate underneath having openings of a size to permit peanuts and some extraneous matter to fall therethrough, the vines being carried upwardly by the cylinders, and a conveyor beneath the forward threshing cylinder having openings of a size to permit the passage of some extraneous matter but of a size to retain the peanuts thereon for discharge into a shaker pan beneath an upper threshing cylinder.

Abstract: A peanut combine has a pickup that is driven selectively and automatically above a predetermined rate from a ground wheel or a power takeoff, and has means for manually disengaging the ground wheel drive for transport purposes.

Abstract: An apparatus for irrigating the earth includes a portable vehicle having a hose reel connected to a supply of water under pressure. An elongated hose is carried by the reel and the end of the hose is connected to a travelling carriage having a water gun and such carriage initially is moved away from the vehicle by an external force after which water passing through the apparatus drives a turbine which rotates the reel and coils the hose thereon while pulling the carriage toward the vehicle at a selected speed so that a large area of the earth is watered automatically.

Abstract: Tobacco harvesting apparatus having a plurality of seats for workmen to hand prime tobacco plants and having a plurality of conveyors for transporting the tobacco leaves and discharging such leaves into a large bulk container.

Abstract: A melt for cold rolled, non-oriented silicon steel is deoxidized and thereafter treated with mischmetal or a mischmetal alloy to desulfurize the melt to 0.012% by weight sulfur or less without the formation of a polluting smoke. The deoxidation is carried out to the extent that, and the mischmetal is added in an amount such that, the melt composition, has a total cerium content of up to about 400 ppm. and preferably from about 75 to about 250 ppm.

Abstract: A method and apparatus for harvesting and treating tobacco in which the tobacco plants are automatically defoliated as a harvester moves through a field. The tobacco leaves are discharged in a random haphazard manner into a large bulk container where the leaves are secured in position and then the containers are placed within a treating barn and the leaves are cured.

Abstract: An apparatus for receiving a large quantity of green tobacco leaves in bulk form with an intermediate screen separating portions of the leaves along the entire length of the container and with a plurality of independent support rods for supporting the tobacco leaves in generally vertical position while the leaves are being cured. The tobacco container is open at one side only during filling and is open at the top and bottom only during the curing process.