Abstract: Provided is a phase detection device which can detect a phase by using a simple configuration.

Abstract: A circuit measures a time interval between a first event and a second event. One or more activity inputs receive a respective signal indicating the first and second events. For each activity input, a respective high-speed serial receiver includes a sampling circuit and a deserializer. The sampling circuit generates sample bits from sampling the respective signal at active edges of a clock signal. The deserializer converts the sample bits into a sequence of parallel data words. The sample bits undergo a first change in response to the first event and a second change in response to the second event. An arithmetic circuit receives the sequence of parallel data words from the respective high-speed serial receiver. The arithmetic circuit determines a number of the sample bits between the first and second changes in the sequence of parallel data words. The number measures the time interval between the first and second events.

Abstract: A microcomputer-equipped system for electric power tool includes a microcomputer, a reference voltage generator, a reference data storage unit, and a first determiner. The microcomputer includes an analog-to-digital (AD) converter and at least one AD port. The reference voltage generator generates and inputs to the AD port a reference voltage having a predetermined value. The reference data storage unit prestores reference data corresponding to the reference voltage. The first determiner compares diagnostic data obtained by AD conversion by the AD converter of the reference voltage inputted to the AD port with the reference data to determine, in case that difference between the diagnostic data and the reference data is out of a predefined allowable range, that an AD abnormal state has occurred in which a correct result of the AD conversion is unable to be obtained from the AD converter.

Abstract: The disclosure concerns a data acquisition apparatus and method. According to the disclosure, a first means providing a series of first digital sampled data (X) at an imperfect sampling frequency (FE) provided by a local clock (2) comprises sigma-delta modulation means (3) arranged to produce said series of first digital sigma-delta modulated data (X), a second gauging means (50) for measuring the frequency error of the local clock (2) in view of a reference clock (6), a third means for correcting the first data based at least on the measured frequency error, which comprises at least an interpolation means (4) to produce second digital data (Y) based on at least an interpolation of said first series (X) and compensating the measured frequency error (FD), and at least a decimation filter (7) for producing third digital data (A) based on said second digital data (Y), are provided.

Abstract: A system for determining occurrence factors of particles includes a user interface device, and an apparatus for detecting the occurrence factors of particles. The apparatus for detecting the occurrence factors of particles includes a storage unit that stores a program for executing a calculation method for calculating a likelihood of each of the occurrence factors of particles in the form of a score; and a calculation unit for calculating the score for each of the occurrence factors of particles based on particle distributions at least on a surface of a substrate using the stored program. The user interface device displays the calculated score for each of the occurrence factors of particles.

Abstract: A method and system for automatically determining an optimal re-training interval for a fault diagnoser based on online monitoring of the performance of a classifier are disclosed. The classifier generates a soft measure of membership in association with a class based on a training data. The output of the classifier can be utilized to assign a label to new data and then the members associated with each class can be clustered into one or more core members and potential outliers. A statistical measure can be utilized to determine if the distribution of the outliers is sufficiently different than the core members after enough outliers have been accumulated. If the outliers are different with respect to the core members, then the diagnoser can be re-trained; otherwise, the output of the classifier can be fed to the fault diagnoser.

Abstract: Disclosed are an apparatus and a method for calculating a temperature dependent Green's function using an appropriate weight function. The apparatus includes a material temperature change information input unit inputting change information of a material temperature; and a temperature dependent Green's function calculation unit receiving the change information of the material temperature through the material temperature change information input unit, calculating a temperature dependent Green's function using a weight function, and outputting the calculated result. According to aspects of embodiments, accuracy in the calculation of a thermal stress value can be improved by designing the weight function such that changes in physical properties of a material that change according to temperature changes are considered.

Abstract: A bolus that is intended to be irradiated during radiotherapy. Advantageously, the bolus is made from a polyurethane gel.

Abstract: A system and method that enable the processing of seismic data. In one embodiment, a system comprises a plurality of processing nodes and a server. The plurality of processing nodes are configured to process seismic data for migration. The server is operatively linked to each of the plurality of processing nodes to enable communication between the server and the processing nodes. The server may manage a set of stored beam tables that can be accessed by the processing nodes in order to process seismic data.

Abstract: A system, method, and apparatus for obtaining a record of logic level transitions within a signal, and for accurately determining a voltage-time pair exhibited by the signal. To achieve these ends, a front-end device may be mated to a real-time sampling system, such as an oscilloscope. The front-end device effectively permits the oscilloscope to observe signals exhibiting greater data rates than otherwise possible without the front-end device.

Abstract: A portable threat detection apparatus and method is disclosed which may comprise a plurality of acoustic emission sensors arranged in a cluster, forming a polygon defining at least two axes of alignment between respective pairs of acoustic emission sensors; a computing device in cooperation with a non-transitory computer readable storage medium comprising computer readable instructions for performing: receiving a first signal produced by a first acoustic emission sensor within a respective pair of acoustic emission sensors, in response to the first acoustic emission sensor detecting an acoustic emission from a source, and receiving a second signal produced by a second acoustic emission sensor within the respective pair of acoustic emission sensors, in response to the second acoustic emission sensor detecting the acoustic emission; determining a cross-correlation factor between the first signal and the second signal; and, determining a bearing to the source based on the cross correlation factor.

Abstract: Described is a technology by which logged events such as in a security event log (e.g., within a defined timeframe) are processed to determine logon times and logoff times, which are then used to determine system usage. Logoff times may correspond to an actual logoff event, a shutdown event, or another login. In one example, logon and logoff times determine the combined times that each user of the system was logged on, e.g., a total session time for each user. Multiple users' times may be combined into a total usage time of all users. Each user's combined session time may be evaluated against the total usage time to determine whether any user is a primary user, e.g., by being logged on more than a threshold percentage of the total usage time. A primary user may be identified, or the system determined to be a shared system without a primary user.

Abstract: An apparatus for determining a dimension of a construction material is provided. At least one material-interacting device is configured to interact with the construction material so as to determine at least one surface characteristic thereof. A computer device is configured to be capable of receiving the at least one surface characteristic from the at least one material-interacting device, and to manipulate the at least one surface characteristic so as to form a multi-dimensional representation of the construction material. The computer device is further configured to determine the surface or volume characteristic of the construction material from the multi-dimensional representation thereof. By determining the mass of the construction material, the density of the construction material can be provided. An associated method is also provided.

Abstract: Plasma sensors, systems and related methods are described. An example method for predicting an event includes providing a carrier signal across two electrodes and forming a plasma between the two electrodes. The example method also includes measuring a modulated signal from the plasma, manipulating the modulated signal to produce a value and comparing the value to a threshold. Finally, the example method includes determining the likelihood of the event based on the comparison.

Abstract: The scientist domain-centric user interface system may prompt the user to supply scientist-centric information expressed utilizing terminology of a scientific domain, such as biology or analytical chemistry. A translation system then generates control parameters to control the search algorithm, thus relieving the user from having to learn how select and configure the algorithm control parameters directly.

Abstract: The invention relates to a method for measuring the pressure and/or molar mass of a gas in a housing, the measure being carried out via an acoustic sensor, said acoustic sensor at least one transducer (5), an electric system (8) connected to the transducer (5) and a coupling layer (6) for coupling the transducer (5) to the housing (1), said method comprising the following steps: generating using the transducer (5) an excitation acoustic signal that vibrates the housing (1) and the gas (2) in a wide frequency band; detecting with the transducer (5) a response acoustic signal characteristic of the vibrations of the housing and the gas; analysing the response electric signals from the transducer (5) using the system (8); and deriving, essentially based on the gas (2) resonance frequencies, the speed of the acoustic waves in the gas, the molar mass of the gas and the pressure thereof. The invention also relates to an assembly for implementing the method.

Abstract: In a method for monitoring a measurement system having a transmitter which determines the position of a moveable element and has a transmitter clock, and an electrical energy store which, in the event of a failure of an external electrical supply voltage for the transmitter, continues to supply electrical power to at least a part of the transmitter, including the transmitter clock. After the external electrical supply voltage has been restored, the clock time of the transmitter clock is compared with a clock time of an external clock, and an incorrectly determined position is identified on the basis of the comparison of the clock times.

Abstract: An apparatus to perform parallel arc fault current interruption (AFCI) is provided. The apparatus includes a current sensing device disposed in the electrical circuit, a detection unit configured to receive an output signal produced by the current sensing device and to output a secondary signal based on the output signal, a microcontroller coupled to the detection unit, configured to receive and to decompose the secondary signal via discrete wavelet transforms to thereby obtain discrete wavelet coefficients, to compute a sum of the discrete wavelet coefficients, and to compare the sum of the discrete wavelet coefficients to a predetermined threshold, and to generate a trip signal when the sensed load current is above a predetermined threshold and the sum of the discrete wavelet coefficients cooperatively indicate that predetermined threshold conditions are satisfied.

Abstract: Disclosed is a technique for simulating wind interaction with wind turbines. A turbine blade is divided into radial sections. The effect that each of these radial sections has on the velocities in Eulerian computational cells they overlap is determined. The effect is determined using Lagrangian techniques such that the calculations need not include wind components in the radial direction. A force on each radial section of turbine blade is determined. This force depends on the axial and azimuthal components of the fluid flow in the computational cell and the geometric properties of the turbine blade. The force on the turbine blade is fed back to effect the fluid flow in the computational cell for the next time step.

Abstract: A method and apparatus is provided for the calculation of maverick control limits. The maverick control limit method selects the correct parameter(s) as critical parameters to be utilized by the maverick control limit method. Next, the maverick control limit method identifies the probability density function that is associated with the parametric data set(s) that are associated with the critical parameter(s). Next, abnormal data points within the measured parametric data set(s) are removed. Maverick control limits are then calculated to properly disposition semiconductor die into pass/fail categories.