1721results about How to "Comparable" patented technology

The invention discloses audible noise measuring circuit and method of a power capacitor. The audible noise measuring method comprises the following steps of: selecting a noise-eliminating test area; mounting a power capacitor to be measured in the noise-eliminating test area; setting a power capacitor to be measured in accompany; building the power capacitor to be measured and the power capacitorto be measured in accompany into a bridge-type power capacitor loading circuit; respectively loading an external high-voltage alternating current power source and an external harmonic power source attwo ends of the bridge-type power capacitor loading circuit, wherein the whole bridge-type circuit achieves resonance state under the common action of power frequency voltage generated by the high-voltage alternating current power source and various time harmonic voltage generated by the harmonic power source; and obtaining various noise values generated by the power capacitor to be measured in an actual work state according to data which are measured by a noise sensor arranged around the power capacitor to be measured and are related to the noise. The invention reduces the random of the noise measuring operation of the power capacitor, so that a measuring result has more comparability and a set of noise measuring method of the power capacitor with systematicness, completeness, science and reasonability is formed.

The invention provides an image definition detecting method and device. The image definition detecting method comprises the following steps: acquiring an original image and converting the original image into a grey level image; selecting M image blocks from the gray level image, wherein the M is an integer larger than or equal to one; calculating a gradient magnitude graph of each image block in the M image blocks, converting the gradient magnitude graph into a one-dimension image edge gradient magnitude signal and a one-dimensional image edge grey level signal, and then calculating a definition metric of each image block; when the M equals one, enabling the definition metric to serve as a definition detecting result of the original image, when the M is larger than one, calculating a mean of the definition metrics of all image blocks to obtain a comprehensive definition metric, and enabling the comprehensive definition metric to serve as a definition detecting result of the original image. According to the image definition detecting method, an index for measuring the image definition is established with the edge gradient serving as the basis, and the method has generality to various image scenes.

The invention provides methods and apparatus for detecting radiation including x-ray photon (including gamma ray photon) and particle radiation for dental x-ray imaging, radiation monitoring, and related industrial and scientific applications. Flat or shaped small (and small hybrid) area storage phosphor plates, incorporated with a protective frame and a movable front protective layer are available in multiple sizes, are encased in SP-carriers and used as detectors for intraoral dental x-ray imaging as a replacement for analog x-ray film and digital x-ray cameras, offering good detection efficiency, high spatial and contrast resolution, and a wide dynamic range. After removal of the SP-carrier, a small area storage phosphor plate is loaded into a dental storage phosphor scanner for readout. Intermediate and large area storage phosphor plates (including hybrid versions) are suitable for non-intraoral dental x-ray imaging. Suitable storage phosphors may be used in radiation monitoring, replacing current detectors employed in a film badge format. Simple external readers or electronic SP-carriers can provide data readout and thus enable dosimetry.

The invention discloses a method for mensurating the aroma quality of tobacco and a tobacco product. The method comprises the following steps: firstly, through an approach for producing an aroma substance or a degradation rule of a precursor substance, total or partial substances are selected from basic aroma substances as representative characteristic substances; secondly, an aroma-causing composition in tobacco leaf is mensurated and analyzed by simultaneously adopting a distillation and extraction-gas chromatography/mass spectrometry method; and finally, a response factor of the substances to the instrument obtained through analysis and detection is set as 1; a calculation factor KR value of a sample is calculated through directly applying data obtained by the instrument; and the aroma quality of the sampler is intuitively characterized. The method provides a convenient and effective mensuration method for controlling tobacco quality.

An improved soft gelatin formulation and process methodology that increases single Coenzyme Q₁₀ molecules presented to the absorption channels of the small intestines by providing medium chain triglycerides, Vitamin E and natural beta carotene to Coenzyme Q₁₀ in a soft gel capsule to increase the absorption thereof.

The invention relates to a method for controlling irrigation according to crop water shortage degree and a device thereof. The method comprises the following steps of: determining a detection time window according to an illumination threshold and an illumination integral threshold; after entering the detection time window, simultaneously emitting ultrasonic waves to ultrasonic reflecting boards which are arranged in right front at equal intervals respectively from the positions approximately above the reference crop and the detection crop and parallel to the planes of the respective crops below at preset time intervals; when receiving the respective reflected ultrasonic waves, respectively starting and stopping the same counter; comparing the counting value with the counting threshold set according to the crop water shortage index in the ultrasonic transition time; and if the counting value is smaller than the counting threshold, the crop water shortage degree requires irrigation, then starting irrigation. The invention has the advantages of fewer detection parameters, no complicated calculation, no detection individual difference, non-contact measurement, and high economy and practicality.

A well logging method features that the abundances of C and H elements in stratum fluid are directly measured and the C/H ratio is used to qualitatively and quantitatively determine the saturability of oil-gas and the water flooding degree for recognizing oil-gas layer, water layer, dry layer and water flooding layer. Its advantages are wide application range and high effect.

The invention relates to a frequency safety online monitoring and assessment method of a power system, which comprises the following steps: (1) setting a transient frequency safety binary table (fcr, fcr); (2) acquiring real-time frequency data of all monitoring points of the power system from an energy management system (EMS); (3) filtering the dynamic frequency data of all the monitoring points on the basis of a moving average method; (4) primarily analyzing the frequency data; (5) analyzing every group of dynamic frequency data, and calculating a frequency safety margin index according to the relationship between a frequency curve and the binary table (fcr, fcr) by the following three conditions: (1) tb = 0; (2) 0 < tb < tcr; and (3) tb > tcr, wherein tb is time that the frequency curve in an observation window deviates from fcr, and a frequency safety quantitative assessment method which takes frequency deviation cumulative effect is applied to the frequency safety margin calculation; and (6) comprehensively analyzing the frequency safety margin calculation results of all the monitoring points, taking the minimum margin value as a system frequency safety margin, and feeding back the system frequency safety margin to the energy management system for information display.

The invention belongs to the field of comprehensive electromagnetic compatibility evaluation, and particularly relates to a comprehensive electromagnetic compatibility evaluation method for a complicated electronic information system. The method is characterized by at least comprising the following steps of: 101, establishing an electromagnetic compatibility index system of a vehicle-mounted communication system; 102, acquiring original data of an index layer in the index system; 103, quantifying the original data of the index in the index layer; 104, acquiring an initial evaluation vector according to the quantified data corresponding to the indexes; 105, calculating a target weight vector for the index system according to an analytic network process (ANP) method; 106, performing performance concentration according to an improved TOPSIS method; and 107, analyzing an evaluation result. Positive and negative reference points are determined by a generalized reference point search method based on historical database sample statistics and replace ideal positive and negative points determined in a scheme to be evaluated by the conventional TOPSIS method; and furthermore, the close degree is calculated by a weighted euclidean distance, so that the problem that the evaluation result is reused is solved.

The invention discloses a reverberation room platform based method for testing electromagnetic environment effects of an electronic system. The method is applicable to threshold testing of the electromagnetic environment effects of the electronic system on the basis of a reverberation room platform. The method includes the steps: 1, setting up a test platform; 2, keeping a reside position of a stirrer unchanged, setting a signal source transmitting frequency, increasing amplification factor of a power amplifier until electromagnetic environment effects occur in the electronic system, and recording the current forward input power; 3, changing the reside position of the stirrer, and repeating the step 2; 4, repeating the step 3 to obtain forward input powers corresponding to a plurality of reside positions of the stirrer; 5, taking the minimal forward input power obtained at the step 4 as the input power of a transmitting antenna, enabling the stirrer to rotate by one circle step by step to obtain corresponding electric field strength at each reside position, and taking the maximum value of the electric field strength as the threshold of the electromagnetic environment effects of the electronic system under the signal source transmitting frequency. The reverberation room platform based method has the advantages of procedure simplicity, easiness in implementation and high repeatability of test results.

The invention relates to a method for extracting and identifying graphic and text information of a scanned document, which comprises the following steps of: 1) preprocessing a scanned document image,carrying out layout segmentation on the preprocessed image, and selecting items, including but not limited to, a signature and a seal; (2) preprocessing the signature extracted in the step (1), removing a background by adopting an OTSU algorithm, inputting the signature into a Writer-Dependent network to extract a characteristic value of the signature, and inputting the characteristic value into an SVM classifier obtained by using real signature training to obtain the authenticity of the signature; (3) conducting polar coordinate transformation on the seal extracted in the step (1) after preprocessing, so that annular characters in the seal are expanded into transversely-arranged characters, inputting the expanded characters into a CPTN + CRNN network to be sequentially extracted and recognized, and outputting the character content of the seal; 4) judging the validity of the document. The method can replace manual work to analyze and judge the document.

The invention relates to high-strength thin strip steel for cold forming and a manufacturing method thereof. The manufacturing method comprises the following steps: performing uniform enhanced cooling on a cast strip by adopting a high-pressure dry ice spraying way after the cast strip is discharged from a crystallization roller, thus rapidly cooling the cast strip to below 1280 DEG C, wherein the cooling rate is 200-300 DEG C/s, and by adopting the cooling way of the strip steel after boron treatment, the precipitation of coarse BN (boron nitride) can be promoted, the appearance of low-melting point phase B2O3 and the precipitation of fine AlN can be prevented and the purposes of uniformizing austenite grains and reducing yield ratio are achieved; then performing austenite online recrystallization rolling; cooling the strip steel after hot rolling by atomization cooling, wherein the cooling rate of atomization cooling is 10-70 DEG C/s; coiling at the temperature of 650-750 DEG C. Through the manufacturing method provided by the invention, the high-strength thin strip steel for cold forming of an automobile, which has relatively low yield ratio and excellent stamping performance, can be obtained. The high-strength hot-rolled thin strip steel for cold forming, which is produced by the method, can be directly used for replacing cold-rolled steel with the hot-rolled steel, cancel a cold rolling process step and greatly reduce production cost.

The invention discloses an individuation recommendation method and system combined with content publisher information.The system comprises a publisher attribute mining module, a publisher content mining module, a similar publisher computing module, a similar publisher recommendation module, a user modeling module, an individuation recommendation module and a result integration module.The fact that the interests of a user are generally fickle is taken into consideration, and the behavior that the user browses some publisher can reflect the interest point of the user at that time to a certain degree.Compared with the individuation recommendation technology generally used in the industry, the individuation recommendation method combined with the content publisher information has the advantages that by mining the information of the publisher browsed by the user at present, the current interest points of the user can be fully captured, and the variability of the interests of the user can be more accurately responded in time.

The invention provides a training method and device of a sorting model. Since the embodiment of the invention adopts a regulation factor which regulates the sorting score of a positive example sample page to tend to be greater than an appointed threshold value and regulates the sorting score of a negative example page to tend to be smaller than the appointed threshold value, the sorting scores of pages corresponding to different search keywords in a Pairwise-based sorting algorithm exhibit comparability, and therefore, the applicability of the sorting scores of the pages can be improved.

The invention discloses a method for detecting the fuel consumption of a vehicle in a transient road-test standard state. The method is characterized in that both a transient road-test load of the vehicle and a load of an engine are corrected so that the fuel consumption of the transient road-test load of the vehicle and the fuel consumption of the load of the engine can be detected and evaluated in a standard environmental state, the fuel consumption Delta Q within various time intervals Delta t are measured in a road test, idle-speed, acceleration, constant-speed and deceleration conditions are respectively corrected by the aid of a road-test load coefficient and an engine power correction coefficient to obtain the fuel consumption Delta Qb in various standard environmental states of the conditions, and the Delta Qb of a total time interval under each condition in a full detection procedure is accumulated to obtain the detected fuel consumption Qb0 of the vehicle in the transient road-test standard state. The method has the advantages of high accuracy, speediness, simplicity and the like.

The invention provides an urban traffic elastic index based on a spatial-temporal congestion sub-group and an implementation method thereof. The implementation method comprises the following steps of1, carrying out preprocessing on urban traffic data information; 2, establishing a traffic dynamic network on the basis of the urban traffic data information, and judging whether a road is in a congested stateor not on the basis of actual speed data on each road section in an urban traffic system by combining a road speed threshold; 3, calculating thespatial-temporal congestion sub-group, namely an elastic index of the traffic system; and 4, carrying out statistical analysis on the spatial-temporal congestion sub-group. By the steps above, according to the invention, operation efficiency of the traffic system is considered from the network level of urban traffic and the spatial-temporal evolution angle, and a problem aboutaccurate and comprehensive measurement on elasticity of a traffic network system can be solved so as to effectively carry out quantification and evaluation on the elasticity of the urban traffic network system; and according to the invention, regulation and control onan overall operation condition of the urban traffic in future are supported, and powerful method support can be provided for construction of the smooth traffic project and smart cities.

Embodiments of the invention provide a user intention identification method and apparatus, an electronic device and a storage medium. The apparatus comprises a determination module used for determining multiple user intentions and multiple feature items, an extraction module used for extracting feature values, corresponding to the user intentions, of the feature items, a first obtaining module used for obtaining user historical behavior data, a training module used for performing model training according to the feature values and the user historical behavior data to obtain weight values of thefeature items, a second obtaining module used for obtaining the current feature items with the real-time feature values, and an intention probability distribution calculation module used for performing weighted summation on the real-time feature values according to the weight values to obtain current probability distribution of the user intentions. The problem of incapability of reflecting an instant tendency of a user under the condition of no query in the prior art is solved, so that the user intentions have comparability.

The invention relates to a misaligned spline vibration wear experimental device and belongs to the aeronautics and astronautics vibration field. The misaligned spline vibration wear experimental device is characterized in that the misaligned spline vibration wear experimental device is composed of temperature sensors, constant-temperature covers, ball bearings, vibration displacement sensors, wheel discs, a rotor 1, bearing seats, grease collecting covers, spline jackets, splines, a rotor 2, double-row bearings, a motor, a frequency converter, a synchronizing belt, a synchronizing wheel, a driven wheel, a preamplifier, a signal acquisition device, an industrial personal computer, a rotor 3, a rotation speed sensor, electric heating wires, bearing elevation adjusting devices, an integrated bearing seat, a basic platform, infrared thermometers, flexible couplings and magnetic powder brakes. The misaligned spline vibration wear experimental device of the invention has a spline comprehensive condition contrast test function, a spline lubricating oil temperature and temperature rise research function, a spline/bearing misalignment research function, a spline engaging torque loading function and a comprehensive data online monitoring function. The misaligned spline vibration wear experimental device is advantageous in multiple experiment functions, strong comparability, excellent repeatability, stable operation, convenience in assembly and disassembly.

The invention provides an ultraviolet spectrophotometry of the content of petroleum in soil. The method comprises the following steps: 1. preparing standard petroleum; 2. preparing purified petroleum ether; 3. weighting 15-25g of fresh soil in a beaker, adding 0.5-0.7ml of hydrochloric acid (1:1) for acidification, mixing, then adding 20-30g of a dry sample of MgSO4.H2O, then performing Soxhlet extraction with chloroform, after reflux, reclaiming chloroform, wherein residue is used as a standby for ultraviolet measurement; 4. weighting 5-10ml of petroleum ether to dissolve the residue, using petroleum ether as reference to place in a quartz cuvette, using a ultraviolet spectrometer to scan within 201-270mm, quantitatively comparing the absorbance of petroleum ether in 256nm of wavelength with that of the standard series of residual petroleum to calculate the content of petroleum; 5. drawing a standard curve; and 6. calculating the petroleum content of soil. The method of the invention avoids the influence of solid-phase differentiation on the measurement result of petroleum so that all the petroleum test data have comparability and the test accuracy is increased.

The invention relates to an index method for diagnosing the degree of the water shortage of a crop. The method comprises the following steps of: placing a reference crop which cannot generate transpiration at a place with the same environment as the detected crop, wherein delta T in the index formula for diagnosing the degree of the water shortage is temperature difference between a canopy of an actual reference crop and the canopy of the detected crop; delta TP is the temperature difference between a potential or maximum canopy of the reference crop and the canopy of the detected crop; meanwhile measuring the temperature of the canopies of the reference crop and the detected crop and substituting the temperature difference into the formula to calculate the CWSI; and quantizing and determining the degree of water shortage of the detected crop. The method has the advantages of few detection parameters, no complex calculation or multi-factor detection accumulative error, reliable data, capability of detecting in a non-contact way and economy and practicability.

This invention provides a method for preparing polycarbonates, which utilizes polycondensation catalysts of the formula Ax+MF6-x, wherein A is an alkali metal or alkaline earth cation; M is a transition metal of group IVA or VA, or M is a p-block metal of group IIIB, IVB or VB; and x is 1, 2, or 3. We have found that this new class of catalysts provide excellent polymerization rates for the preparation of Bisphenol A polycarbonate from the melt polymerization of diphenyl carbonate and Bisphenol A. Moreover, the catalysts of the invention were found to be very selective in substantially reducing the level of branching side reaction, i.e., formation of Fries product, normally associated with the melt polycarbonate process.