Abstract: An element damage determination unit calculates a cumulative value of a damage value using a Manson-Coffin law for a plurality of finite elements of a continuum based on a result of a stress/distortion analyzing process, and determines whether or not the cumulative value of the damage value is equal to or exceeds a threshold. A calculation unit obtains first correspondence information indicating the correspondence between the number of cycles of a load and a growth rate of a crack occurring in the continuum based on the determination result. A Manson-Coffin law change unit changes a Manson-Coffin law based on the first correspondence information and second correspondence information indicating the correspondence between an actual measurement value of the number of cycles of a load applied to the continuum and an actual measurement value of the growth rate of a crack occurring in the continuum at that time.

Abstract: A method and visualization apparatus for spectral analysis of time-and-space varying signals enables high resolution investigation of 3D seismic data for the exploration of oil and gas. The method extrapolates multi-resolution short windows into an average long window then computes its FFT. Extrapolation uses the continuity relationship between data inside and outside of short windows. Applications of the method are illustrated with graphical screen 3D volume displays of amplitude spectra, dip and azimuth, curvature and faults (figure below). Aside from high resolution these displays improve the productivity of a seismic interpreter.

Abstract: A method for correcting errors in LWD depths includes performing torque and drag model analysis using drillstring weight, downhole friction, weight on bit, thermal expansion, rig heave and tide to produce a corrected time-depth file, wherein the torque and drag model is automatically calibrated using effective block weight, drillpipe wear, and sliding friction; and correcting time-based LWD data using the corrected time-depth file to produce depth-corrected LWD data. A system for correcting errors in LWD depths includes a processor and a memory that stores a program having instructions for: performing torque and drag model analysis using drillstring weight, downhole friction, weight on bit, thermal expansion, rig heave and tide to produce a corrected time-depth file, wherein the torque and drag model is automatically calibrated using effective block weight, drillpipe wear, and sliding friction; and correcting time-based LWD data using the corrected time-depth file to produce depth-corrected LWD data.

Abstract: A pulse width measurement circuit generates a time difference signal that corresponds to the pulse width of the input pulse signal PULSE. A delay circuit delays the input pulse signal PULSE by a predetermined amount, and outputs a start signal. An inverter inverts the input pulse signal PULSE, and outputs a stop signal. A time measurement circuit measures the time difference between a positive edge in the start signal and a positive edge in the stop signal, and outputs a time difference signal that corresponds to the time difference.

Abstract: Techniques for inline measurement of a switching history time constant in an integrated circuit device are provided. A series of pulses is launched into a first stage of a delay chain comprising a plurality of delay stages connected in series and having a length greater than a decay length of at least an initial one of the series of pulses, such that the at least initial one of the series of pulses does not appear at a second stage of the delay chain. An amount of time between the launching of the initial one of the series of pulses and the appearance of at least one of the series of pulses at the second stage of the delay chain is determined. The switching history time constant is calculated as a function of a number of stages traversed by the at least one pulse, the determined amount of time, and the decay length of the at least initial one of the series of pulses based at least in part on a switching history of the integrated circuit device.

Abstract: A gas sensor which includes: a plurality of gas detectors, each detects a target gas; an error detector which detects the occurrence of an error on each of gas sensors; an output selector which selects one output from among outputs entered from each gas sensor, the output selected by the output selector is the output from the gas detector in which no error exists; and an output unit which generate a normal output based on the output selected by the output selector and outputs the normal output to an external electrical device through a single output system, the output unit generates an abnormal output based on the output from the gas detector, in which the error exists, when the gas detector, in which an error exists, is detected, and outputs alternately the normal output and the abnormal output.

Abstract: There is provided a test apparatus for testing a plurality of devices under test. The test apparatus includes a signal input section that applies a test signal to the devices under test so as to cause the devices under test to concurrently output response signals, a combining section that generates a single combination signal by using the response signals output from the devices under test, and a judging section that judges whether the devices under test operate normally with reference to the combination signal.

Abstract: A performance monitoring apparatus for a fluid machinery which includes a predicted performance curve calculator for obtaining a curve representing the relationship between a pressure coefficient and a flow coefficient by non-dimensional characteristics per a plural fluid control quantities from a compression ratio or a pressure difference and an inlet flow rate of the fluid machinery, and a performance monitoring calculator for obtaining an actual performance head from fluid control quantities, a suction pressure, a discharge pressure, a suction temperature, a compression coefficient, a gas average molecular weight, and a specific heat ratio at the time of the operating fluid machinery, and obtaining a predicted performance head from a predicted performance curve, fluid control quantities, and an inlet flow rate; and calculating a performance degradation from the ratio of the predicted performance head to the actual performance head.

Abstract: A method for analyzing formation data includes decomposing the formation data into simple components that can be used to reconstruct the formation data, wherein the decomposing is performed at a first location and includes a process to minimize an overlap between the simple components; and transmitting parameters representing the simple components to a second location for reconstructing the formation data. A system for analyzing formation data that includes a processor and a memory that stores a program having instructions for decomposing the formation data into simple components that can be used to reconstruct the formation data, wherein the decomposing is performed at a first location and includes a process to minimize an overlap between the simple components; and transmitting parameters representing the simple components to a second location for reconstructing the formation data.

Abstract: A compensation table for compensating interference signal obtained by OCT measurement is generated easily. When a reflection body interference signal is obtained by OCT measurement, the reflection body interference signal is compensated by a compensation table (Formula (1)) to obtain an evaluation output signal. Then, a spectrum of the evaluation output signal is calculated to obtain an evaluation value of the spectrum. Thereafter, a model coefficient is updated such that the evaluation value becomes small.

Abstract: This disclosure describes signal processing techniques that can improve the performance of blind source separation (BSS) techniques. In particular, the described techniques propose pre-processing steps that can help to de-correlate the different signals from one another prior to execution of the BSS techniques. In addition, the described techniques also propose optional post-processing steps that can further de-correlate the different signals following execution of the BSS techniques. The techniques may be particularly useful for improving BSS performance with highly correlated audio signals, e.g., from two microphones that are in close spatial proximity to one another.

Abstract: According to one embodiment, generating images according to intersection points includes obtaining samples of signals from transmitter-receiver pairs. A transmitter-receiver pair is configured to transmit a signal and receive the signal reflected by an object. Intersection points are determined, where an intersection point indicates an intersection for integer multiples of a sample-time distance. A subset of samples corresponding to the intersection points is selected. Image data is generated from the selected subset of samples, where the image data is used to generate an image of the object.

Abstract: A design structure for a circuit for measuring the absolute duty cycle of a signal anywhere on an integrated circuit device is provided. The circuit has a plurality of substantially identical pulse shaper elements, each of which expand the pulse of an input signal whose duty cycle is to be measured by a same amount. The outputs of the pulse shaper elements may be coupled to substantially identical divider circuits whose outputs are coupled to a multiplexer that selects two inputs for output to a set of master/slave configured flip-flops, one input serving as a clock and the other as data to the flip-flops. The flip-flops sample the divider outputs selected by the multiplexer to detect if the dividers have failed or not. The outputs of the flip-flops are provided to an XOR gate which outputs a duty cycle signal indicative of the duty cycle of the input signal.

Abstract: A method for analyzing load run test results of a computer system includes providing a plurality of performance measure sets derived from a first series of load run tests performed over a same time period. Each set comprises a plurality of records and each record has a timestamp and a value. Performance measure records are sorted by value in ascending order, for each performance measure set. Plateau regions are identified in the sorted performance measure sets, for each performance measure. Performance measure records are sorted within each plateau region by time stamp in ascending order, for each performance measure. Overlapping time intervals covered by the plateau regions are identified for the plurality of performance measure sets, and averages of performance measures are computed over the overlapping time intervals.

Abstract: A mechanism is provided for measuring the absolute duty cycle of a signal anywhere on an integrated circuit device. The mechanism employs a circuit having a plurality of substantially identical pulse shaper elements, each of which expand the pulse of an input signal whose duty cycle is to be measured by a same amount. The outputs of the pulse shaper elements may be coupled to substantially identical divider circuits whose outputs are coupled to a multiplexer that selects two inputs for output to a set of master/slave configured flip-flops, one input serving as a clock and the other as data to the flip-flops. The flip-flops sample the divider outputs selected by the multiplexer to detect if the dividers have failed or not. The outputs of the flip-flops are provided to an XOR gate which outputs a duty cycle signal indicative of the duty cycle of the input signal.

Abstract: An apparatus for detecting a reversion of direction of a relative movement between a periodic scale for defining a periodic field and a field sensor. The field sensor outputs first and second sensor signals. The first sensor signal is advanced from the second sensor signal if the periodic field moves in a first direction. The second sensor signal is advanced from the first sensor signal if the periodic field moves in a second direction. A determiner determines the difference between the first sensor signal and a signal corresponding to a temporal change of the second sensor signal or between the second sensor signal and a signal corresponding to a temporal change of the first sensor signal.

Abstract: A method and system (10, 23) for determining vehicle weight to a precision of <0.1%, uses a plurality of weight sensing elements (23), a computer (10) for reading in weighing data for a vehicle (25) and produces a dataset representing the total weight of a vehicle via programming (40-53) that is executable by the computer (10) for (a) providing a plurality of mode parameters that characterize each oscillatory mode in the data due to movement of the vehicle during weighing, (b) by determining the oscillatory mode at which there is a minimum error in the weighing data; (c) processing the weighing data to remove that dynamical oscillation from the weighing data; and (d) repeating steps (a)-(c) until the error in the set of weighing data is <0.1% in the vehicle weight.

Abstract: A computer which functions by a performance prediction program for a ground source heat pump system of the present invention and a performance prediction system constructed thereby include a dimensionless distance calculating means, a first dimensionless time calculating means, a second dimensionless time calculating means, a boundary time acquiring means, an underground temperature change calculating means, and a tube surface temperature change calculating means. The performance prediction program and performance prediction system can be applied to the design of heat exchange system by obtaining predicted underground temperature data for the ground source heat pump system with high accuracy and predicting the performance for the ground source heat pump system based on the resulting underground temperature changes, etc., in view of the use of a plurality of buried tubes, underground temperature change patterns for buried tubes placed at different intervals, and the use of U-shaped tube heat exchangers.

Abstract: A method for producing a value T being representative of the mean engine torque generated on a crankshaft of an internal combustion engine includes the steps of producing a speed vector including values being representative of instantaneous speeds of the engine during a sampling period, determining a mean engine speed n during said sampling period from the speed vector, determining a value Px, being representative of the frequency contribution of the speed vector at the frequency x*n, where x is a pre-selected order, and producing a value T being representative of the mean engine torque on the crankshaft during said sampling period, wherein T is derived from a mathematical expression including a polynomial having at least a term k*n*Px, where k is a polynomial constant. A device for producing a value T is also disclosed.

Abstract: The present invention relates to a method for computing external crystal shapes from X-Ray Diffraction Data (XRD) of a substance. Each diffraction peak arises from a set of crystal planes and the peak width is related to the thickness of the crystal in a direction perpendicular to these set of planes. The crystal shape is actually given by the mathematical envelope of the pairs of planes corresponding to each diffraction peak.