65 results about "Decay factor" patented technology

A data collector having a digital signal processing circuit that receives a digitized vibration signal, and performs processing steps to isolate high frequency pulses in the digitized vibration signal and quantify energy content of those pulses by detecting a peak negative value of the digitized peak-to-peak amplitude of the received vibration signal, and then using this peak negative value to compute a maximum peak-to-peak value of the received vibration signal. Periodically, the maximum peak-to-peak value and peak negative value are reduced in magnitude by a decay factor, such that the peak negative value and maximum peak-to-peak value decay over time. The decay factors used in computing the maximum peak-to-peak value and peak negative value are determined by the digital signal processing circuit and may be readily changed. As a consequence, high frequency processing performed by the digital signal processing circuit may be readily adapted to the particular frequency characteristics of the machine being analyzed for predictive maintenance, without modification of the analog circuitry of the data collector. The resulting maximum peak-to-peak value comprises a peak-detected digital output signal that may be stored and / or displayed to a user as a reflection of the high frequency content of the vibration signal, or frequency transformed for storage and / or display to a user.

The invention discloses a method for measuring soil compaction degree based on ground penetrating radar. The method comprises the following steps: adopting a ground penetrating radar cross-section method to measure the volume weight of soil; processing an acquired measurement signal, and defining a zero point measured by an electromagnetic wave to obtain accurate time domain information; extracting electromagnetic wave propagation speed, and establishing a regression equation of reverting the volume weight of soil in combination with the electromagnetic wave propagation speed and other soil factors; extracting the amplitude of the electromagnetic wave, using the correlation between the amplitude energy value of the electromagnetic wave and soil penetration resistance to proof the feasibility of the soil compaction degree measured by the ground penetrating radar; calculating the decay rate of the electromagnetic wave, using the correlation between the decay factor of the electromagneticwave and the soil penetration resistance to proof the feasibility of the soil compaction degree measured by the ground penetrating radar; using the average speed of propagation of the electromagneticwave to calculate the average volume weight of a soil body, and using the amplitude of the electromagnetic wave and the decay factor to reflect the characteristic that the soil compaction degree gradually changes along with the depth. The method disclosed by the invention is accurate, simple and fast.

In some embodiments, affective-state-based artificial intelligence may be facilitated. One or more growth or decay factors for a set of affective attributes of an artificial intelligence entity may be determined, and a set of affective values, which are associated with the set of affective attributes, may be continuously updated based on the growth or decay factors. An input may be obtained, and a response related to the input may be generated based on the continuously-updated set of affective values of the artificial intelligence entity. In some embodiments, the growth or decay factors may be updated based on the input and subsequent to the updating of the decay factors, the affective values may be updated based on the updated growth or decay factors.

A system and method for enabling an audio conference server (ACS) to provide an application program with multi-point weight controllable audio conferencing. The ACS manages a plurality of audio conferences, receives audio data from a plurality of audio clients, mixes the audio data to provide distance-based attenuation according to decay characteristics for each sound, and delivers the mixed audio data to a plurality of audio clients. Audio clients include set-top box (STB) audio clients and point source audio (PSA) audio clients. The ACS mixes the audio data by identifying a decay factor. Pre-defined decay factors include an audio big decay factor, an audio small decay factor, an audio medium decay factor, and a constant decay factor. One can also develop a customized decay factor. A weighted value for a source audio client based on the identified decay factor and the distance between the source audio client and a target audio client is determined. A mix table is generated using the weighted values for each source / target audio client pair. Then an actual mix value for each target audio client is calculated using the mix table. The present invention also includes means for refining the actual mix value.

Methods, apparatus, systems, and computer program products are provided for providing distributed online learning for personal predictive models that preserves user privacy. An example method comprises receiving model updates based at least in part on synchronization metadata. The model update comprises one or more received model parameter updates. The received model parameter updates correspond to one or more model parameters. The model updates are associated with a particular apparatus. The example method further comprises determining a decay factor based at least in part on the synchronization metadata; applying the decay factor to the one or more received model parameter updates; and updating the one or more model parameters based on the decayed model parameter updates.

The invention relates to a method and a sytem for estimating residual fractional frequency offset. The method comprises the following steps: residual frequency offset computing, Doppler estimation and accumulation; according to the difference of a dispersed pilot frequency module value and a dispersed pilot frequency phase angle, obtaining a residual frequency offset estimation value of maximum and minimum borders so as to eliminate a distortion point and a phase spill point caused by a dynamic multi-path channel; during the catching state of the Doppler estimation, reducing a border value through adding a decay factor in each time slot; judging whether to unlock according to the frequency offset border update quantity wherein the decay is not carried out under a locked state; and during the accumulation, accumulating OFDM symbols and the output of the each-time Doppler estimation to be compensated to a time domain end. In the residual fractional frequency offset estimation method disclosed by the invention, the processing of the Doppler frequency offset is increased, the influence of the Doppler frequency offset to a system is reduced, therefore, the residual fractional frequency offset in the dynamic multi-path channel can be accurately estimated, and the accuracy of the residual fractional frequency offset estimation and the stability of the system are improved.

An enhanced toy produces repeating, decaying notes in response to applied pressure. The tone of each note is determined, based on the location at which a user applies pressure. The initial amplitude of each note is proportional to the intensity, as measured by a stress sensor. The toy periodically repeats each note, attenuating the amplitude of each successive repetition by a decay factor. The toy may alter the notes associated with each of a plurality of locations. For example, if all currently repeating notes have decayed below a predetermined threshold, the currently available set of notes may be exchanged for a new set of notes, e.g. with different tones or timbres. The stress sensors may comprise flexible capacitors within the toy. As the user applies pressure, the geometry of one or more capacitors deform, altering the measured capacitance, through which the intensity of the applied pressure is determined.

A system and method for automatically generating a computation mesh for use with an analytical tool, the computation mesh having a plurality of ξ-grid lines and η-grid lines intersecting at grid points positioned with respect to an inner boundary and an outer boundary. The method includes receiving from a user information corresponding to a shape to be analyzed using the analytical tool and solving one or more mesh equation for a plurality of point locations, the one or more mesh equations depending on a source decay factor that is inversely proportional to the number of η-grid lines.

A system and method for automatically generating a computation mesh for use with an analytical tool, the computation mesh having a plurality of ξ-grid lines and η-grid lines intersecting at grid points positioned with respect to an inner boundary and an outer boundary. The method includes receiving from a user information corresponding to a shape to be analyzed using the analytical tool and solving one or more mesh equation for a plurality of point locations, the one or more mesh equations depending on a source decay factor that is inversely proportional to the number of η-grid lines.

The invention relates to a quorum-sensing inhibitor of aquatic Pseudomonas fluorescens and a preparation method thereof. The quorum-sensing inhibitor can be used for development of compound preservatives for aquatic products. The preparation method comprises the following steps: taking moutan barks as the raw material; pre-treating the moutan barks; adding organic solvent into the pre-treated moutan barks, extracting by ultrasonic-assisted vibration, filtrating then collecting the filtrate; performing rotary evaporation to the filtrate, so that a crude extract is obtained; adding absolute ethyl alcohol into the crude extract to perform alcohol precipitation; performing suction filtration to remove the filter residues then performing rotary evaporation to the filtrate, so that the moutan-bark extract solution is obtained; finally, freezing and drying the moutan-bark extract solution, so that the moutan-bark extract is obtained. The moutan-bark extract is the quorum-sensing inhibitor. The invention is characterized in that the raw-material source is abundant and the preparation method is simple. The moutan-bark extract disclosed by the invention is capable of obstructing the quorum-sensing system of the aquatic Pseudomonas fluorescens and blocking the expression of the decay factors, so that the moutan-bark extract can be used for aquatic product preservation and in compound preservatives.