406results about How to "Analytical results are reliable" patented technology

The invention relates to an iron alloy fusing sample preparation method for X-ray fluorescence spectrum analysis, belonging to the technical field of materialization detection and aiming to solve the problem that fusing a film production alloy sample can erode a platinum crucible. The method comprises the steps of building up wall of the platinum crucible, preparing an oxidizing agent, pre-oxidizing an iron alloy sample and fusing and preparing sample from the iron alloy sample. The invention provides the fusing sample preparation method suitable for various iron alloys such as ferromanganese, silicomanganese, calcium silicon, ferrosilicon, ferromolybdenum, ferrotitanium, cymrite, ferrochrome, ferrocolumbium, ferrovanadium, silicon silicomanganese and the like. By adopting the method, a glass fusing piece can be manufactured without eroding the valuable platinum crucible, the sample can be completely oxidized in the sample preparation process, the sample preparation time is short, the prepared glass fusing piece is uniform and perfect, and the mineral effect and the granularity effect can be completely eliminated. The invention has safe and reliable method, simple and convenient operation and good repeatability, is suitable for various iron alloy samples and widens the application range of the fluorescence analysis.

The invention discloses a device and a method for detecting attention focusing degree based on the analysis of heart rate variability, mainly solving the problems of large interference and inconvenient testing of reference signals for attention judgment in the prior art. The method comprises the following testing steps: acquiring original electrocardiographic digital signals according to a MV5 lead mode; filtering the interference in the original electrocardiographic digital signals, extracting the position of a R wave and calculating heart rate variability signals; integrating and segmentingthe heart rate variability signals; performing empirical mode decomposition on each segment of the heart rate variability signals; calculating the approximate entropy of the heart rate variability signals and intrinsic mode function component signals; training a neutral network by using the calculated approximate entropy as an input vector of a reverse transmit neural network algorithm, and determining the parameters of codes of a neutral network; and detecting the attention focusing degree of a subject by utilizing the trained neutral network and outputting the test result. The invention hasthe advantages of large reference signal strength, convenient test and high accuracy, and is used for testing the attention focusing degree of a human body.

The invention discloses a lung cancer somatic mutation detection and analysis method based on a high-throughput sequencing technique. The method comprises the steps of (1) controlling quality; (2) comparing sequences; (3) detecting mutations; (4) annotating the mutations; (5) reporting the results. Compared with the prior art, the method of the invention has the advantages that the detection results are reliable; the detection content is diversified; the detection method is flexible; the data results are visualized.

The invention relates to a surrounding rock stress distribution determining method in the tunnel surrounding rock stability analysis and evaluation field. The method comprises the following steps that (1) a mechanical model is built: the surrounding rock volume weight is set as gamma, the side pressure coefficient is set as lambda, the tunnel buried depth is set as H, the excavation span is set as D, and when the tunnel buried depth H and the excavation span D meet the condition that H is greater than or equal to 10D, the original ground stress field of the tunnel is simplified into the vertical stress, the horizontal stress and the shearing force uniformly distributed at infinity; (2) a mapping function of the arbitrarily excavated cross section and the variable zeta is built; (3) zeta and omega are adopted for showing analytic function psi(z); (4) the excavated surrounding rock stress of the tunnel is obtained through calculation according to the following complex variable functions; and (5) the calculated surrounding rock stress is analyzed. The method fills the underground tunnel surrounding rock stress analysis and analysis blank, and higher precision and higher engineering reliability are realized.

The invention discloses an X-ray fluorescence spectroscopy analysis fusion sample preparation method of an aluminum, manganese, calcium and iron alloy, which comprises the steps of: firstly, coating a uniform protection wall layer in a platinum crucible by using lithium tetraborate, then placing an aluminum, manganese, calcium and iron sample, an oxidizing agent, a lithium borate solvent and a releasing agent into the platinum crucible in which the protection wall is coated, uniformly mixing, and then pre-oxidizing the aluminum, manganese, calcium and iron sample; and finally, melting the pre-oxidized aluminum, manganese, calcium and iron sample, and cooling to obtain an aluminum, manganese, calcium and iron sample glass fuse piece, wherein the aluminum, manganese, calcium and iron sample is a detection sample or calibration sample of the aluminum, manganese, calcium and iron alloy, and the sample glass fuse piece is a detection sample glass fuse piece or calibration sample glass fuse piece of the aluminum, manganese, calcium and iron alloy. On the premise of no corrosion to the valuable platinum crucible, the glass fuse piece can be prepared, and the prepared sample is excellent and uniform, thus the mineral effect and the grain size effect are completely eliminated.

The invention discloses an unconventional natural gas content automatic measuring apparatus. The apparatus comprises a gas collection measuring cylinder (3), a balancing measuring cylinder (4), a liquid storage tank (5), a data acquisition and control system (6), a host computer (7) and a lifting device (12) for driving the motion of the gas collection measuring cylinder (3) and the balancing measuring cylinder (4) relative to the liquid storage tank (5), each of the lower ports of the gas collection measuring cylinder (3) and the balancing measuring cylinder (4) is placed below the liquid level of the liquid storage tank (5), a precipitation tank (1) is placed in a constant temperature water-bath box (2), a gas guide tube A (18) is communicated with the precipitation tank (1) and the gas collection measuring cylinder (3), and a gas guide tube B (19) is communicated with the balancing measuring cylinder (4) and outside air. According to the invention, a photoelectric non-contact closed loop measurement and control method is adopted to realize the constant-pressure equal-volume automatic continuous measurement of the content of the natural gas in an unconventional natural gas reservoir sample, and the apparatus has the advantages of simple structure, reliable measurement and analysis results, simple operation, and high measurement precision.

The present invention discloses a construction method for a compound thrombus clearing preparation bioactivity chromatography finger print. The construction method comprises the following steps: (1) preparing a compound thrombus clearing preparation test solution, precisely sucking 10 mul of the compound thrombus clearing preparation test solution, and injecting into a double-pump dual-gradient high performance liquid chromatograph to obtain a compound thrombus clearing preparation HPLC finger print; (2) preparing a mixed reference substance solution, precisely sucking 10 mul of the reference substance solution, and injecting into the double-pump dual-gradient high performance liquid chromatograph to obtain a reference substance HPLC finger print; (3) adopting a reference substance control method, and adopting an RRLC / MS / MS technical method to prove 21 chemical components in the finger print; and (4) analyzing correlation between the 21 chemical components and bioactivity difference, clarifying bioactivity component groups, and establishing a compound thrombus clearing preparation bioactivity chromatography finger print. According to the present invention, the compound thrombus clearing preparation HPLC finger print and the bioactivity component groups obtained from chromatograph efficiency analysis are combined to construct the compound thrombus clearing preparation bioactivity chromatography finger print so as to completely monitor safeties, effectiveness and quality uniformities of raw material herbs, semi-finished products and finished products.

The invention relates to a method for quickly determining gold, palladium, platinum, rhodium, iridium, silver, nickel, copper and iron in a rare and precious metal system. According to the detection principle of an inductively-coupled plasma-atomic emission spectrometry, the method comprises experimental conditions, sample treatment, working curve plotting, interference and elimination, detectionlimits and accuracy, wherein the experimental conditions comprise instrument selection, selection of analytical spectral lines, and determination of acidity of a system to be measured; the sample treatment comprises treatment and measurement of a test sample; the working curve plotting comprises preparation of a series of standard solutions, working curve plotting and calculation of analytical results; whether a spectral line of a coexistence element exists adjacent to the analytical spectral line of an element to be tested or not through the investigation and analysis of coexistence elementinterference is performed; determination is continuously performed for 11 times by using a blank solution excluding the element to be tested to obtain the detection limits and lower determination limits of the method; a precision experiment is conducted by repeatedly determining a sample for 11 times, and a standard recovery experiment of the sample is performed; and finally, compared with results obtained through the original determination method, the reliability of determined results of the method provided by the invention is further confirmed.

The invention discloses an underground cavity analysis method considering nonlinear softening and dilation characteristics of surrounding rock. According to the method, a hyperbolic softening model based on the characteristics of the Hoek-Brown criterion is established according to the characteristic that the strength parameter of the surrounding rock of a tunnel is weakened with the increasing of the strain of a plastic zone, the model is based on the characteristics of a resultant stress-strain curve of the surrounding rock, and reflects the nonlinear characteristics of the surrounding rock through example verification, the model is applied to analysis for the surrounding rock subjected to strain softening in underground construction, and a new method for an underground cavity analysis is established by considering the nonlinear softening and non-associated flow characteristics as well as a nonlinear failure criterion of a rock mass; the solutions of the stress of the underground cavity, the deformation of the cavity and the radius of the plastic zone are obtained; according to the method disclosed by the invention, the dilation characteristics of the surrounding rock are considered according to a non-associated flow criterion, and with regard to the deformations of the surrounding rock under different plastic models, application example results indicate that the strain dilation of a rock-soil material with dilation and strain softening is considered to be safe.

The invention relates to the inspection method and sampling device for the SO3 content of the smoke released by thermal power plant boiler. The sampling device comprises the dust remover, sampling tube, spiral collecting tube and drawing device, with the dust remover at the input end of the sampling tube whose output connected with the input of the spiral collection tube, with the input and output ends of the spiral collection tube on the spiral, and the output connected with the drawing device through hoses. It collects SO3 of the smoke to the spiral collection tube, getting SO42 sample solution after treatment, with arsenazo III as the color developing agent, dropping with barium acetate solution to get the density of SO3. It is accurate, quick, and reliable, with every possible means to avoid heat waste due to improving acid dew point corrosion.

The invention discloses an air-ground integrated plant automatic detection system and method. The system comprises a front end collecting module, an unmanned aerial vehicle collecting module, a polarorbiting satellite remote sensing module and a rear end processing module; the front end collecting module is used for collecting meteorological factors, environmental factors and Chinese herb images;the unmanned aerial vehicle collecting module is used for collecting visible light images and multispectral remote sensing images; the polar orbiting satellite remote sensing module is used for collecting the regional image information and hyperspectral plant remote sensing images; and the rear end processing module is used for evaluating whether the current environment adapts to growing and developing of Chinese herbs or not by conducting historic storage, command control and real-time displaying and comprehensive analysis of the meteorological factors, the environmental factors and the images of the front end collecting module, conducting alarming on the corresponding situations, and predicting the yield. The method is simple and convenient to operate, and the data is accurate.

The invention discloses an imaging device of a large geotechnical centrifuge, which comprises a camera bracket 27, a two-dimensional moving device, a camera 18, a model casing 26 and a data control and processing device, wherein the camera bracket 27 is fixed outside the model casing 26 of the centrifuge; the two-dimensional moving device which can transversely and vertically move is vertically fixed on an outside frame of the camera bracket 27; the camera 18 is fixed on the two-dimensional moving device, and a lens of the camera 18 is toward the model casing 26; and the two-dimensional moving device and the camera are both electrically connected with the data control and processing device. The device can shoot over against any point of a model, has high definition of images, low cost and easy implementation and can more favorably analyze the model.

The invention discloses a test method and a test platform for performance of a wind-photovoltaic-hydrogen comprehensive energy power generating system. The method comprises the following steps: establishing mathematic models of three parts, namely a windmill generator, a photovoltaic cell and a hydrogen cell; making the mathematic models into software modules and presetting the software modules and attribute parameters together into an industrial computer to design controllable simulation natural environment and test and calculate to obtain a performance theory curve of various parts of the power generating system; making a performance actual curve of the various parts through actual performance of the various parts; and comparing the curves to judge whether the performance of the comprehensive energy power generating system meets the requirement. The test method and the test platform can provide convenience for technicians to detect, analyze and study the working condition of the wind-photovoltaic-hydrogen comprehensive energy power generating system so as to perform optimization design on the wind-photovoltaic-hydrogen comprehensive energy power generating system, wherein the adopted novel mathematic model of the windmill generator can make analysis results more accurate and reliable.

The present invention discloses a method for estimating a fracturing reformation volume of a shale gas horizontal well. The method comprises the following steps: performing, by a production gas well, a shut-in pressure recovery test; performing deconvolution processing on a pressure-yield material; transforming a deconvolution result into a pressure response by means of an integral; drawing a pressure difference curve and a pressure derivative curve on a double logarithmic plot; and performing conventional test well interpretation on a curve graph, to estimate a fracturing reformation volume of an artificial fractured gas reservoir. According to the estimation method, a technical problem of after-pressure evaluation of a shale gas horizontal well is resolved from a dynamic perspective. The method is a complementary technical means to fracturing reformation effect evaluation, and has characteristics of being rigorous in method, simple in application, and accurate and reliable in analysis result.

The invention discloses an automatic method for analyzing constitution and diversity of a bacterial community of a 16SrRNA gene. The automatic method comprises the following steps: in 16SrRNA sequencing data analysis process, by taking original sequencing sequence data as input, calling a standard analysis tool (such as Mothur and QIIME) of the industry, and performing visualization on data finally, thereby obtaining analysis results which are easy to analyze. The automatic method includes popular main analysis items at present, meanwhile analysis contents can be modularized, relatively rich and deep data mining analysis methods can be available, different analysis module contents can be combined according to different demands, and process procedures can be relatively reasonably arranged; and in addition, analysis errors caused by different sequencing depths can be eliminated, and the analysis results can be relatively comprehensive, accurate and reliable.

The invention provides a method for analyzing autotransformer differential protection CT circuit connection. The method comprises the following steps of: (1) acquiring parameters of all windings in the autotransformer differential protection circuit; (2) measuring phases and amplitude values of phase currents of the windings in the autotransformer differential protection circuit; (3) calculating according to the acquired parameters to obtain the correct current phases of secondary circuits of the windings in the autotransformer differential protection circuit; (4) comparing to judge the correctness of the measured autotransformer differential protection circuit connection, and generating the corresponding connection status code; (5) outputting the result; and (6) synthesizing the primary windings and the secondary windings, and outputting the synthesis result. The invention has the advantages of high reliability, safe and simple use and convenient operation, and solves the technical problem of complex process for artificial judgment of connection correctness in the prior art.

The invention provides a method for evaluating damage accumulation inside a steel structure thick plate. The method comprises the following steps that firstly, an elastoplasticity damage constitutive model for the steel structure thick plate is built, and the increment form of the model stress component is obtained through derivation; secondly, a corresponding material subprogram is complied for the increment form; thirdly, layered sampling is carried out on the steel structure thick plate in the thickness direction, and the elastoplasticity parameter and damage parameter of each layer of materials are determined; fourthly, a finite element model of the steel structure thick plate is built, the complied material subprogram is introduced into finite element analysis, and different material attributes are given to parameters of materials on different layers; the finite element model is loaded, the damage evolution course of the steel structure thick plate under the effect of the external load is simulated, and therefore corresponding evaluation is carried out. As for the characteristic that the steel structure thick plate is large in thickness, the damage evolution course of the thick plate under the effect of the external load is considered from the perspective of layered material properties, and the evaluation result better conforms to the real damage accumulation of the steel structure thick plate.

The invention discloses a vibration stress numerical analysis method for turbomachinery blades. The method comprises the steps of 1, building an FEM model of a solid region of an entire circle of the blades and CFD models of periodically symmetric fluid regions; 2, obtaining steady-state pressure intensity field distribution of meshes of the fluid regions of the blades and instant pressure intensity field distribution of each time step in a pneumatic period; 3, converting pressure intensity field distribution data; 4, performing finite element mode analysis of the entire circle of the blades; 5, obtaining node force load vectors of blade surfaces of all time steps; 6, solving a vibration displacement response by a mode superposition method; 7, expanding a displacement response result into a stress result; and 8, performing vibration stress result extraction and check. According to the method, the pressure intensity distribution of the blade surfaces is obtained by adopting a non-steady computing method, and an accurate air exciting-vibration force load is obtained by interpolation from the meshes of the fluid regions of the blades to the pressure intensity of the meshes of the solid region, so that the computing precision is improved; and each sector adopts a CPU+GPU heterogeneous parallel computing mode, so that the computing speed is greatly increased.

The invention relates to a connection analyzing method of a relay protection circuit in a power system. The method comprises the following steps: (3) judging whether the connection is correct or not according to the measuring value of each winding differentially protected by a converted main transformer or the measuring value of each circuit differentially protected by a bus; (4) performing first modification and judgment, and judging whether the connection way is correct or not after the first modification is finished; (5) performing second modification and judgment; (6) generating modified current effective value and storing the modified value satisfying the correct condition; and (7) outputting an analyzing result. The connection analyzing method of the relay protection circuit in the power system has high judgment and analysis reliability, simple use and convenient operation.

The invention discloses a method and an apparatus for end point detection in titration analysis. The method mainly comprises detecting the wavelength of transmission light of a test solution, and then based on the complementary color principle, showing the color of the test solution in the form of a wavelength of a color the same with the color, thereby to determine the end point of the titration analysis. The device comprises a sealing case, a small door is arranged on the box for placing the test solution to the sealing case, a small hole of a suitable size is disposed on the small door so that it is convenient for a person to dropwise add a standard solution into the test solution by a dropping device through the small hole, a magnetic stirrer is arranged below the small door, the test solution is placed on the magnetic stirrer, a while-light-emitting device is arranged beside the test solution to provide while light beam, a light wavelength detection device for detecting the wavelength of transmitted light of the test solution is arranged at the light-transmitting side of the test solution, the light wavelength detection device is electrically connected with a control cabinet, and the display screen of the control cabinet is arranged on the sealing case. According to the method and the apparatus, human errors are minimized, measurement precision is high, costs are low, reproducibility is good, and popularization is easy.

The invention discloses a power distribution network reconstruction multi-objective optimization method containing section switch configuration. The method comprises the following steps: constructing a global optimal multi-objective power distribution network reconstruction model for system reliability, electric energy loss as well as section switch installation and operating cost; using an ant colony algorithm to solve the reconstruction model; obtaining an optimal solution of the multi-objective power distribution network reconstruction model; and optimizing the quantity and positions of power distribution network switches according to the optimal solution so as to realize the global optimal multi-objective power distribution network reconstruction. The method has the beneficial effects that the system reliability can be greatly improved through optimal configuration of section switches according to the method provided by the invention, and the overall system cost can be greatly reduced.

The invention discloses a concrete beam damage monitoring system and a monitoring method. The method comprises the following steps: presetting a set of two intelligent aggregates into a to-be-detectedconcrete beam; respectively using the two intelligent aggregates as a piezoelectric ceramic driver and a piezoelectric ceramic sensor; exciting the piezoelectric ceramic driver through a high pressure amplifier by utilizing a signal generated by a signal function generator; analyzing the collected signal by a signal processing module connected with the piezoelectric ceramic sensor, thereby acquiring a peak signal; comparing the peak signal with an initial value of the signal emitted by the signal function generator, thereby acquiring the interior condition of the to-be-detected concrete beam.The monitoring system has the advantages of sensitive sensing, safety, reliability and wide measuring scope. The monitoring system has a simple structure and high power, is suitable for monitoring various slant cracks and crossing cracks generated in the concrete beams at different shear span ratios and is capable of realizing the functions of horizonal and vertical bidirectional motivation and signal collection.

The invention relates to an analytic technique of seismic data quality. The invention has the following steps: firstly, selecting control point common shot gathers data, determining the maximum analytical frequency, selecting and analyzing frequency band according to the range of the effective reflected signal frequency in a target block, carrying out frequency wave filtering to each seismic channel of the data each cannon to obtain the frequency demultiplication result of each channel; adopting a formula (1) to make time domain median filter to all seismic channels of each frequency band in each cannon to obtain the statistical energy curve results of each frequency band, drawing the statistical energy curve results of each frequency band in the same cannon on an identical chart to obtain a time-frequency analysis chart. The invention can quantitatively reflect the data quality of data control point rapidly and correctly, avoid errors in human analysis and obtain reliable results.

The invention discloses a clenbuterol hydrochloride assay kit and its preparation method and use method. The clenbuterol hydrochloride assay kit comprises a kit body, a clenbuterol hydrochloride enzyme label plate, a clenbuterol hydrochloride standard solution, a clenbuterol hydrochloride enzyme conjugate, a diluent, a concentrated washing liquid, a first substrate and a second substrate. The preparation method provided by the invention comprises preparing the clenbuterol hydrochloride enzyme label plate, the clenbuterol hydrochloride standard solution, the clenbuterol hydrochloride enzyme conjugate, the diluent, the concentrated washing liquid, the first substrate and the second substrate. The use method provided by the invention comprises sample preparation, sample addition and detection, and detection result analysis. The clenbuterol hydrochloride assay kit has the advantages that sensitive, stable and reliable result analysis is realized; operation steps are less; sample pre-treatment is simple; adopted equipment can be popularized easily; and the clenbuterol hydrochloride assay kit can be utilized for determination of residual clenbuterol hydrochloride of pork, has sensitivity of 0.03 micrograms per kilogram, needs detection time shorter than detection time of an ELISA method by 30 minutes and satisfies requirements of rapid detection of clenbuterol hydrochloride residues.

{0><}0{>The invention relates to a method for measuring contents of gold and silver in a gold mud sample by virtue of fire assay and belongs to a method for measuring a gold mud material by virtue of a fire assay method. <0}{0><}0{>The method comprises the following steps of: burdening and fusing a test sample so as to obtain a proper amount of lead buttons and fragile molten slag; recycling residual gold and silver in the molten slag; separating gold and silver from the lead buttons through cupelling, thereby obtaining gold and silver combination particles; processing and weighing the particles; grinding the gold and silver combination particles into slices; separating gold by use of nitric acid; and weighing, and calculating contents of gold and silver. <0}{0><}0{>The method is capable of improving the experiment accuracy and simplifying experimental procedures, is convenient to operate, and is capable of realizing batch operation for samples and effectively improving the working efficiency.

The invention discloses a urine analysis method based on an intelligent terminal. The method comprises steps as follows: S1) urine information entry: a urine sample is dropped onto a urine analysis test strip or the urine analysis test strip is soaked into the urine sample, and a standard color bar and the urine analysis test strip are shot in the same picture; S2) image analysis: positions of the test strip and the standard color bar in the picture are analyzed, and an image of the picture is divided; S3) color block extraction: secondary image division is performed on the standard color bar and the urine analysis test strip; S4) calculation of the urine color: white parts between color blocks of the standard color bar are taken as standard white, colors of parts between color blocks of the urine analysis test strip is calculated through comparison, and the color of urine is restored; S5) calculation of colors of the color blocks: the color blocks of the standard color bar are taken as standard colors, and true colors of the color blocks are reduced; S6) result analysis: according to the true colors, obtained through calculation, of the color blocks, a urine analysis result is given and displayed on intelligent terminal equipment.

The invention belongs to the technical field of the on-line detection and analysis of electric power system low-frequency oscillation. The invention provides a method for quantitatively evaluating the contribution degree of an electric generating set associated with a node participating in the oscillation of certain mode to the oscillation power of the mode in a power system, only based on the information of Wide Area Measurement System. In the method, a concept of node contribution factor is first proposed based on injection active oscillatory power, and then according to the amplitude of injection active oscillatory power and the relative phase position among active oscillatory power curves under certain frequency mode, an analysis and calculation method is provided corresponding to the node contribution factor of the frequency mode, and the homology and grouping of the node are realized at the same time. The method is applicable to a system without an electromagnetic ring net and consideration for losses and can also be used for an actual electric power system which has the above characteristics through simplification.

The invention relates to a detection method of citrinin, in particular to a method for detecting contents of citrinin in monascus by liquid chromatograph / mass spectrometer (LC / MS). The method comprises the steps of pre-processing a sample by an ultrasonic extraction method, and performing ultrahigh-pressure liquid chromatograph and mass spectrometric detection. In the method, a waters BEH C18 liquid chromatographic column is adopted, the mobile phase is acetonitrile and water, and the gradient elution condition is that the column temperature is the room temperature; a quadrupole mass spectrometer detector is used: a spray source is electrosprayed in a positive ion manner, and parent ions and product ions are used as qualitative and quantitative ions; the result is that the linearity of the standard solution of citrinin in the method between 0.01 and 50 microgram / L is good; the regression equation is y=1923.2x+270.29, R2 is 0.9998; the recovery of the sample is 83.6%; the detection limit is 0.001 microgram / L. The accuracy of the method is high, the repeatability is good, and the method is suitable for the quantitative detection of citrinin in monascus.

A method for predicting attributes of webpage crowd includes steps of (1) obtaining basic attribute information of users according to registration information of the user or user IDs (identifications), and preprocessing the basic attribute information to remove unreasonable attribute information of the user; (2) tracking webpage accessed by the user by the aid of loaded Cookie when the users access webpage, and collecting the accessed webpage; (3) computing influence of the word-pair webpage on tendency of the attributes of the users; (3.1) selecting text vector feature words according to differential gain DG of the attributes of the crowd and information gain; (3.2) computing influences of the words on the tendency of the attributes of the webpage crowd; (4) computing the tendency of the attributes of the crowd of a webpage theme; and (5) predicting the tendency of the attributes of the webpage crowd from the respects of the theme and the words respectively and then obtaining integral tendency of the attributes of the webpage crowd. The method is a reliable method for effectively determining the attributes of the webpage crowd in a targeted delivery manner.