Abstract: Simulation of a computational job using various sets of resources, and potentially also the automated or semi-automated allocation of an appropriate set of resources for accomplishing a computational job comprising multiple vertices. For each of multiple potential sets of resources, a simulation module simulates processing of the computational job. While the simulation does not actually perform the vertex on each processing node, the simulation does use dependencies between vertices, and historical data regarding the processing of instances of such vertices, in order to determine the efficacy of processing of each vertex, and to put the estimations together into an overall simulation result.

Abstract: In a welding power supply, a feedback circuit senses electrical signals from the power output studs and from remote welding sense leads. The feedback control circuit scales the electrical signals and converts the signals to binary numbers having magnitude bits and a polarity bit respectively. The binary numbers, representing the signals, are simultaneously shifted into a logic processor for calculation of a feedback signal based on the digitized input. The feedback signal is calculated based on the polarity of connectivity of the remote welding sense leads as represented by the binary numbers. The feedback signal is then fed into the power supply output controller for automatically adjusting the power output of the arc welder.

Abstract: Simulation of a computational job using various sets of resources, and potentially also the automated or semi-automated allocation of an appropriate set of resources for accomplishing a computational job comprising multiple vertices. For each of multiple potential sets of resources, a simulation module simulates processing of the computational job. While the simulation does not actually perform the vertex on each processing node, the simulation does use dependencies between vertices, and historical data regarding the processing of instances of such vertices, in order to determine the efficacy of processing of each vertex, and to put the estimations together into an overall simulation result.

Abstract: In a welding power supply, a feedback circuit senses electrical signals from the power output studs and from remote welding sense leads. The feedback control circuit scales the electrical signals and converts the signals to binary numbers having magnitude bits and a polarity bit respectively. The binary numbers, representing the signals, are simultaneously shifted into a logic processor for calculation of a feedback signal based on the digitized input. The feedback signal is calculated based on the polarity of connectivity of the remote welding sense leads as represented by the binary numbers. The feedback signal is then fed into the power supply output controller for automatically adjusting the power output of the arc welder.

Abstract: In a welding power supply, a feedback circuit senses electrical signals from the power output studs and from remote welding sense leads. The feedback control circuit scales the electrical signals and converts the signals to binary numbers having magnitude bits and a polarity bit respectively. The binary numbers, representing the signals, are simultaneously shifted into a logic processor for calculation of a feedback signal based on the digitized input. The feedback signal is calculated based on the polarity of connectivity of the remote welding sense leads as represented by the binary numbers. The feedback signal is then fed into the power supply output controller for automatically adjusting the power output of the arc welder.

Abstract: One embodiment is a method that uses a Single Sign On (SSO) infrastructure in an application for creating a security context that identifies a user. The application then passes the security context to a second application and to the user as a cookie. The cookie is passed back to applications to enable SSO access to resources.

Abstract: One embodiment is a method that uses a Single Sign On (SSO) infrastructure in an application for creating a security context that identifies a user. The application then passes the security context to a second application and to the user as a cookie. The cookie is passed back to applications to enable SSO access to resources.

Abstract: In a welding power supply, a feedback circuit senses electrical signals from the power output studs and from remote welding sense leads. The feedback control circuit scales the electrical signals and converts the signals to binary numbers having magnitude bits and a polarity bit respectively. The binary numbers, representing the signals, are simultaneously shifted into a logic processor for calculation of a feedback signal based on the digitized input. The feedback signal is calculated based on the polarity of connectivity of the remote welding sense leads as represented by the binary numbers. The feedback signal is then fed into the power supply output controller for automatically adjusting the power output of the arc welder.

Abstract: A method for sensing and monitoring ICBM threats using a constellation of earth orbiting satellites. The method includes arranging a first and a second plurality of threat sensing satellites in earth orbit. The first plurality is selected to have a first prograde orbit plane with a first inclination angle between about 30° to 70° with respect to the earth's equator and an Argument of Perigee equal to about 270°. The second plurality is selected to have a first retrograde orbit plane with a second inclination angle between about 110° to 150° with respect to the earth's equator and an Argument of Perigee equal to about 270°. The second inclination angle is selected to be a symmetric conjugate of the first inclination angle. The first and second plurality of threat sensing satellites are distributed respectively within the first prograde and first retrograde orbits with a Walker distribution of T/P/1.

Abstract: A balanced input circuit which is used with an operational amplifier to obtain the difference between two input signals. In a temperature sensor application, one input signal is proportional to absolute temperature (PTAT) and one signal is complimentary to absolute temperature (CTAT) with the CTAT signal being the base-emitter voltage (Vbe) of a bipolar transistor. In this application the operational amplifier output is the PTAT signal minus Vbe times a scale factor determined by the feedback loop of the operational amplifier.

Abstract: Curvature in the temperature response of junction voltage of a diode or transistor is compensated by circuitry which offsets the curvature at temperatures below a reference temperature and at temperatures above a reference temperature. Two current sources are provided including a first current source of current proportional to absolute temperature (PTAT) less a current complimentary to absolute temperature (CTAT) and a second current source of PTAT plus beta times CTAT (PTAT+&bgr;CTAT).

Abstract: A real time radiographic test system comprises a protective housing and a conveyor for conveying articles to be tested through the housing. A real time radiographic test instrument is located in the housing for performing a real time radiographic test on the article. The real time radiographic test instrument includes X-ray equipment disposed for directing an X-ray beam within the housing in a direction which does not intersect the conveyor. An article-handling actuator is located in the housing for repositioning an article from the conveyor to a position in registry with the X-ray beam, for maintaining the article in registry with the X-ray beam while the real time radiographic test is performed on the article and thereafter returning the article to the conveyor. The article-handling actuator and the X-ray equipment are designed such that each article to be tested is positioned substantially identically relative to the X-ray beam.