摘要:
A system and method for managing logical and physical address state lifecycles. A state of unknown can be assigned to an address when the state has not been assigned. The state of the address is changed when communication is targeted to the address. The state can be changed to unfulfilled when the communication includes an address resolution protocol request sent to a device having the address when a time limit for a response to the address resolution protocol request has not expired. The state can be changed to virtual when the communication is received at the address when the state of the address is unfulfilled, and a time limit for responding to the communication expires before a response is sent. The state can be changed to unknown when the state of the address is not unknown, and the address does not participate in the communication within a time limit.
摘要:
The present disclosure relates to electrical junction box extensions. During the installation of conduit and wiring systems, electrical junction boxes can become overfilled with too many conductors, and may not meet code. Either the junction box must be replaced with a larger box, or a box extension must be attached. However, replacing a junction box wastes time, and junction box extensions are costly, and requires excessive additional inventory. The proposed solution is to attach a second identical, or substantially identical, junction box to the first junction box. Only minor manufacturing modifications to the standard junction boxes are required to employ the disclosed extension methods, and the disclosed methods work for a wide variety of box sizes. Several embodiments are disclosed, each consisting of inexpensive ways to quickly attach and secure two junction boxes together, thereby doubling the available volume.
摘要:
A system for designing, configuring, and reconfiguring operational relationships between one or more wireless control modifies within a controlled environment that are linked to pieces of utilization equipment or to an alternate electrical source, and one or more wireless control devices within a controlled environment. The system comprises application software and a database which interfaces with computer-aided design (CAD) software and with energy management systems.
摘要:
A navigation and guidance computer system using navigation sensors to determine aircraft position, and automatically control the aircraft to fly from an initial position to intercept and follow a crew-selected rendezvous orbit in accordance with Air Traffic Control and military specified rules. It creates maneuvers that result in smooth, efficient motion of the aircraft from an initial position to the execution of a rendezvous orbit. It controls the aircraft by applying commands to the aircraft's autopilot. The system creates the smooth and coordinated maneuvers by considering and anticipating all constraints on the aircraft flight path by creating a single maneuver that is a re-entry maneuver, an over fly maneuver, and a turning maneuver all as a single turn that is contained entirely within the allowable airspace. All maneuvers are created and executed recognizing the turning capability of the aircraft considering allowable bank angles, current wind conditions and true airspeed.
摘要:
A method and apparatus for obtaining an actual measurement in feet and inches of the distance between two points which appear on a scaled drawing by adjusting a first and second indicator to locate on the drawing a first and second point, and generating a voltage signal corresponding to the distance between the two points. A converter then converts the voltage signal to a frequency signal which is received by a first counter which generates a first binary count in response thereto. Logic gates couple the first counter to a second counter which generates a second binary count which is incremented by the first counter when the first counter reaches twelve. The first and second binary counts represent the feet and inches, respectively, portion of the measurement, and the actual measurement in feet and inches is displayed on liquid crystal displays mounted in the housing of the apparatus.
摘要:
A pair of pressure transducers are connected to pressure probes positioned in a flow passage of a turbofan engine downstream of the fan and respond to pressure fluctuations which occur in the airstream. One transducer has a high response capability, and its output is passed through a band-pass filter to isolate the high frequencies of interest. The other transducer has a low response capability, and its output is passed through a low-pass filter to provide the steady state pressure level. A triggering level is scheduled as a function of the steady state pressure level, and a comparator is used to continuously compare the triggering level with the level of the high frequency pressure signal produced in the band-pass filter. If the amplitude of the high frequency pressure is greater than that of the triggering level, the engine is approaching a surge or stall condition, and a warning signal is generated which may be used to institute corrective action.
摘要:
A system and method for managing logical and physical address state lifecycles. A state of unknown can be assigned to an address when the state has not been assigned. The state of the address is changed when communication is targeted to the address. The state can be changed to unfulfilled when the communication includes an address resolution protocol request sent to a device having the address when a time limit for a response to the address resolution protocol request has not expired. The state can be changed to virtual when the communication is received at the address when the state of the address is unfulfilled, and a time limit for responding to the communication expires before a response is sent. The state can be changed to unknown when the state of the address is not unknown, and the address does not participate in the communication within a time limit.
摘要:
A system, method, and computer-readable medium for deterring network incursion by formulating appropriate responses to attacks. Once an attack is detected, the system may respond in such a manner as to imitate a network device. The system may respond in a manner that provides a high cost to pursue further communication with the system. For example, the system may respond to TCP syn requests and window probes with messages indicating small packet and window sizes. As such, attempts to send packets to the system have a high network and processing cost. An attacking computer running multiple threads may ultimately slow or be disabled as a result of the receiving the responses and attempting to continue to communicate with the system.
摘要:
A tool for engagement with overhead valves to retain them in securely raised positions while working on the valve associated structure to prevent valves from falling into the cylinder when released from such associated structure. The tool has a flexible tube with an inflatable balloon at one end thereof which is projected through a spark plug opening into the combustion chamber and a compressible bulb at the other end of the flexible tube for manually supplying air pressure to said balloon through the tube. The tool includes control valve means for selectively connecting the bulb directly to the balloon for inflating the latter in the combustion chamber to engage the valves and hold them in a raised position and for venting the tube to deflate the balloon and release the valves when the work is complete.
摘要:
Systems, methods, and computer program products for detecting, locating, and identifying gunshots. In response to detecting a discharge of a firearm, a discharge alert indicating one or more characteristics of the discharge is transmitted to a gunshot location system. The one or more characteristics of the discharge are compared to one or more characteristics of one or more gunshots detected by the gunshot location system based on acoustic signals received at one or more listening stations. In response to finding a match between the one or more characteristics of the discharge and the one or more characteristics of acoustically detected gunshot, the gunshot is associated with the firearm.