Abstract: The present disclosure relates to a prediction method for constant production decline of a water-producing gas well in a highly heterogeneous reservoir.

Abstract: A SOC estimation method and system with advanced parameter identification and integrating infinite algorithm for battery monitoring is disclosed. According to the dynamic and static characteristics of the battery, a second-order RC equivalent circuit model is established, wherein the state equation and output equation of the model are calculated. A variable forgetting factor recursive least squares algorithm incorporating finite memory is utilized for parameter identification. An adaptive unscented H infinite filter algorithm is combined with a second-order RC equivalent circuit model with known parameters to establish the SOC estimation model, which can accurately reflect the state information of the battery to accurately estimate the SOC value of the battery.

Abstract: A method involves obtaining a current production rate, obtaining a current wellhead pressure, computing a current smoothed production rate from the current production rate, computing a current smoothed wellhead pressure from the current wellhead pressure, predicting based on the current smoothed production rate, the current smoothed wellhead pressure, and the current surface choke size, a future smoothed production rate and a future smoothed wellhead pressure, computing a change of the future vs the current smoothed production rate, and computing a change of the future vs the current smoothed wellhead pressure.

Abstract: Method and systems are provided that characterize a geological formation, which involve collecting or obtaining electrical signal data that results from interaction of electrical signals with the formation. The electrical signal data is processed to determine data characterizing relative permittivity and conductivity of the formation. The data characterizing relative permittivity and conductivity of the formation are used as inputs to models to determine data characterizing water saturation of the formation, particularly useful in formation evaluation and reservoir saturation dynamic monitoring in fresh water and mixed salinity environments.

Abstract: Provided is an audio-based device fault detection method, an electronic device, and a storage medium, relating to the field of data processing and in particular to technical fields of deep learning and voice technology. The method includes: obtaining initial audio data collected by a drone for a target device; preprocessing the initial audio data to obtain audio data to be detected; performing feature extraction on the audio data to be detected to obtain an audio feature of the audio data to be detected; constructing an information graph based on the audio feature; and obtaining a fault detection result for the target device based on the information graph and a graph neural network model.

Abstract: A battery management apparatus according to an embodiment includes a side reaction determining unit configured to determine a target peak in a differential profile representing a corresponding relationship between voltage and differential capacity of a battery, and determine whether a side reaction occurs in the battery by comparing a criterion peak of a preset criterion profile with the target peak. A side reaction cause determining unit is configured to determine a resistance pattern of the battery with respect to a criterion voltage region in a resistance profile representing a corresponding relationship between voltage and resistance of the battery, and determine an occurrence cause of the side reaction based on the determined resistance pattern.

Abstract: A method of probabilistically canceling noise in a measurement-based quantum device includes obtaining a sequence of ideal measurements included within a quantum algorithm and selecting a sequence of noisy measurements for emulating the sequence of ideal measurements. Each of the noisy measurements in the selected sequence approximates a corresponding one of the ideal measurements and is adjusted by a quantum correction, where the noisy measurements are selected according to a carefully chosen distribution to cancel known features of noise in those same noisy measurements in the sequence.

Abstract: A method for reducing effects of free surface multiple reflections from seismic signal measurements. The measurements result from seismic energy imparted into the Earth's subsurface from collocated measurements related to pressure and vertical component of motion in response to the imparted seismic energy. The method includes entering as input to a computer the measurements related to pressure and vertical component of motion. In the computer, a down-going component of the measurements is determined. An impulse response of the Earth in the absence of a free surface from the down-going component is determined.

Abstract: The present invention belongs to the technical field of petroleum and natural gas exploration and development, and specifically relates to a study method for chlorite growth pattern based on an in-situ high-precision observation means. The method includes: S1: selecting a sample and quantitatively characterizing mineral components; S11: selecting a typical sandstone sample developed with a chlorite coating and cement, grinding a rock slice, and observing under a microscope and a scanning electron microscope to determine a basic morphological characteristic, occurrence state and type of the chlorite; S2: performing data preprocessing on the sample; S3: establishing a water-rock numerical simulation model; S4: developing a water-rock numerical simulation experiment; S5: analyzing a water-rock numerical simulation result; and S6: explaining and applying the water-rock numerical simulation result.

Abstract: A fluorescent spectrum correcting method includes comparing fluorescent spectrum obtained from micro-particles labeled with a plurality of fluorescent pigments with reference spectrum to separating the fluorescent spectrum into fluorescent spectrum for each pigment, and previously measured spectrum data is used as the reference spectrum.

Abstract: A method for operating a magnetically-inductive flowmeter, wherein the magnetically-inductive flowmeter includes: a measuring tube for guiding a flowable medium; at least two measuring electrodes for detecting a flow velocity-dependent measuring voltage induced in the medium; and a magnetic field-generating device for generating a magnetic field passing through the measuring tube, wherein the magnetic field-generating device includes a coil system with at least one coil, includes determining a deviation ? of a reactance of the coil system or of a variable dependent upon the reactance of the coil system from a desired value. A magnetically inductive flowmeter is also disclosed.

Abstract: A sample measurement device includes a measurement unit (1) configured to measure a sample, and a controller (2) configured to analyze a measurement result of the measurement unit. The controller (2) is configured to estimate and acquire a measurement result under another measurement condition using a model formula based on measurement results under a plurality of measurement conditions with different measurement parameter conditions, and estimate a distribution of a measurement quality indicator with respect to a measurement parameter based on the estimated measurement result.

Abstract: Systems and methods for determining an estimated weight of a vehicle are provided. The system includes at least one data storage and at least one processor. The at least one data storage is configured to store vehicle data associated with the vehicle. The at least one processor is configured to: identify a plurality of vehicle maneuvers based on the vehicle data, each vehicle maneuver being associated with a portion of the vehicle data, each portion of the vehicle data comprising a measured torque profile; generate a plurality of simulated torque profiles for each vehicle maneuver; generate a plurality of error profiles, an error profile being generated for each vehicle maneuver based on differences between the plurality of simulated torque profiles and the measured torque profile corresponding to that vehicle maneuver; and determine the estimated weight of the vehicle based on the plurality of error profiles.

Abstract: A method comprises drilling a borehole and capturing data during drilling of the borehole, wherein the data comprises at least one value of at least one operational parameter of the drilling. A specific energy formula is modified and used to determine at least one of an efficiency and a quality of drilling of a borehole. Modifying the specific energy formula is based on data captured during drilling of the borehole. The specific energy formula comprises at least one of a mechanical specific energy formula and a hydromechanical specific energy formula. An adjusted specific energy value for the drilling is calculated based on the modified specific energy formula. At least one of the efficiency and the quality of the drilling of the borehole is determined based on the adjusted specific energy value. Also disclosed is a system comprising a machine-readable medium having program code executing the method.

Abstract: Heights of components or parts thereof are measured within a printing machine by measuring their relative rather than absolute heights. A virtual surface may be constructed from the measured heights, with a tolerance level employed based on the virtual surface. The invention is particularly suited to measurement of tooling components within a printing machine, such as tooling pins.

Abstract: A system for scanning a client's hair color and dispensing hair coloring to change the clients hair color from an initial color to a target color is disclosed. The system comprises an input for reading the measured color from the scanning device, a processor configured to compare the measured color to a desired target hair color and develop a coloring protocol for changing the clients current hair color to the desired target color, and a dispenser for dispensing one or more formulations that follow the protocol.

Abstract: Systems, methods and apparatus are provided for soil testing. In some embodiments, a soil sample quality criterion is determined and associated with the soil sample. In some embodiments a soil characteristic measurement is additionally taken and associated with the soil sample. In some embodiments, the soil sample and its associated data are associated with a container in which the soil sample is placed.

Abstract: A phase gradient calculation unit calculates a phase gradient on a plane intersecting an irradiation direction of light corresponding to an optical coherence tomography signal indicating a state of a sample for each of sample points arranged on the plane. A bulk phase error calculation unit integrates, for each of plurality of paths from an origin that is a sample point where a bulk phase error is determined to a destination that is a sample point where the bulk phase error is not determined, the phase gradient for each of the sample points along each of the plurality of corresponding paths to calculate a path specific phase error at the destination, and combines the path specific phase errors among the plurality of corresponding paths to determine the bulk phase error at the destination.

Abstract: A system and method for predicting electrical arcs in an electrical circuit is provided. A time series data of the electrical circuit is received by a prediction system which is configured to detect an electrical signature indicating an upcoming electrical arc. The prediction system constructs Hankel matrix using the time series data which is decomposed using SVD to obtain a singular vector in which delay coordinate embedding is performed to generate reconstructed singular vector which includes plurality of eigen time delay coordinates. Further, threshold coefficient ‘r’ is calculated from the reconstructed singular vector. A first set of eigen time delay coordinates is identified in the reconstructed singular vector based on ‘r’ which are rth eigen time delay coordinates. A rate of change in magnitude of rth eigen time delay coordinates is calculated to detect the electrical signature based on which the upcoming electrical arc is predicted.

Abstract: A method of calculating a soil moisture profile includes obtaining a capacitance measurement of a soil surface at a location, applying a preselected calibration to the capacitance measurement to obtain a top surface moisture estimate, obtaining local climatic and hydrological data correlated with the location, the local climatic and hydrological data, which includes at least local water input data, and calculating an estimate of the soil moisture at the location by applying a preselected evapotranspiration model to the top surface moisture estimate and the local climatic and hydrological data.