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49 results about "Structure factor" patented technology
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In condensed matter physics and crystallography, the static structure factor (or structure factor for short) is a mathematical description of how a material scatters incident radiation. The structure factor is a critical tool in the interpretation of scattering patterns (interference patterns) obtained in X-ray, electron and neutron diffraction experiments. Confusingly, there are two different mathematical expressions in use, both called 'structure factor'.
Mobile phone with internal accounting
InactiveUS7245901B2Expands potential customer baseExpand its customer baseAccounting/billing servicesConnection managementInternal memoryMobile Telephone Service
A mobile phone system with a mobile phone having internal accounting capabilities for real time call debiting to account for the billing parameters of a mobile phone unit that is operated in a multi zone communication network with a complex rate structure, the mobile phone unit having an internal processor with accessible internal memory for storing the accounting program and call data for each call, a clock and circuit means for activating and deactivating the phone, the accounting program including an updatable rate table and a complex billing algorithm for calculating the account status on the fly including multiple rate structure factors such as long distance calls, international calls with country independent local charges, charges for roaming per day and / or roaming per minute, and call surcharges, where the account status of the mobile phone is calculated in real time for decrementing a debit account or calculating an account charge on demand, the mobile debit phone having a signal for alerting the user of account status which is preferably a display of real time account status, the mobile phone system including a communication system for activating and programming a new phone unit over the airways and upgrading the account status in rate table in the phone unit over the airways.
Owner:TRACFONE WIRELESS
Cable type welding wire
ActiveCN105665955AStable weldabilityImprove the pass rate of twistingWelding/cutting media/materialsSoldering mediaStructure factorWire breakage
The invention provides a cable type welding wire. The cable type welding wire comprises a center welding wire and n peripheral welding wires arranged around the center welding wire in a spiral rotating manner, wherein the diameter of each of the peripheral welding wires is d, and the neighboring peripheral welding wires are separately arranged in an intersecting manner. The cable type welding wire is characterized in that the lay length T of each of the peripheral welding wires is equal to K*m*d, wherein K is the structure factor of the peripheral welding wires, m is the lay length multiple, and d is the diameter of each of the peripheral welding wires; K is larger than or equal to 1, and less than or equal to 1.5; m is larger than or equal to 20, and less than or equal to 25. According to the cable type welding wire provided by the invention, wire breakage is not liable to generate in the manufacturing process; during welding, the peripheral welding wires are arranged compactly, so that the wire feeding process is more stable, and the welding performance of the cable type welding wire is improved.
Owner:SUZHOU YINLI WELDING IND TECH CO LTD
Flat-plate crack antenna modelling approach based on SVMR
InactiveCN101339577AAccurate estimateQuick estimateComputing modelsSpecial data processing applicationsAntenna designProperty value
The invention provides a method for modeling the planar slot antenna based on a supporting vector regression; according to the main mechanical structure parameters and value range of functional components of a planar slot antenna, Latin Hypercube Sample method is utilized to select proper test data, and then simulated numerical computation of electromagnetic fields is applied to modeled objects so as to obtain training samples for a model of the supporting vector regression and then to establish the model for the supporting vector regression of f(x)= (sigma) summation of i=1(a-a<*>)K(x,x)+b. A genetic algorithm is used for optimizing the parameters of the established model to obtain an optimal model, and then a test sample generated randomly is used for validating the performance of the sample. The method provided by the invention for modeling the planar slot antenna based on the supporting vector regression can accurately and rapidly estimate the electrical property values of the planar slot antenna with arbitrary structure parameters, avoid electromagnetic numerical computation, and solve mechanism research in influence of the mechanical structure factor of the planar slot antenna on the electrical property and the problem of design and optimization of the planar slot antenna, thus establishing a reliable foundation and basis for selecting the modeling and the processing precision of the planar slot antenna.
Owner:10TH RES INST OF CETC
An electromechanical coupling model-based shaped reflector antenna electrical performance prediction method
ActiveCN106991210AAccurately assess the impact on electrical performanceRealize the structureDesign optimisation/simulationSpecial data processing applicationsElement modelEngineering
The invention provides an electromechanical coupling model-based shaped reflector antenna electrical performance prediction method. The method comprises the steps of determining a structure scheme of a shaped reflector antenna; building a finite element model of the structure of the shaped reflector antenna; calculating self-gravity deformation of the structure of the shaped reflector antenna; calculating impact terms of shaped surface error and feed source error of the shaped reflector antenna on antenna aperture field amplitude and phase position; calculating the electrical performance of the deformed shaped reflector antenna by using an electromechanical coupling model of the shaped reflector antenna; judging whether the result meets design requirements. The method can accurately analyze the influence of a gravity load on the structure of a shaped reflector antenna and achieve coupling analysis of the structure of a shaped reflector antenna and electric and magnetic fields. The method can analyze the influence of various kinds of structure error on working performance of an antenna, find out main structure factors, provide reasonable structure precision requirements according to actual requirements, shorten a development period and reduce development costs.
Owner:XIDIAN UNIV
Test device for simulating influence of whole root system on shearing strength of soil
InactiveCN103115830AEasy to operateExperimental results are reliableMaterial strength using steady shearing forcesEngineeringUltimate tensile strength
The invention discloses a test device for simulating the influence of a whole root system on the shearing strength of soil. The device comprises a square box for bearing sample soil and a root system part, wherein the square box comprises an upper box and a lower box overlapped up and down; one end surface of the upper box is connected with a tension meter; and the other end of the tension meter is connected with a traction device. The device disclosed by the invention can quickly measure the maximum shearing force of the whole root system indoors or outdoors; the provided model can simulate various different root system structure factors such as the placing angle of the root system in soil, the distance between the root system and a shearing damage surface and the buried depth of the root system in soil; and the operation is simple and convenient, and an experimental result is reliable.
Owner:BEIJING FORESTRY UNIVERSITY
Test method as well as correction method and device for detection efficiency of PET (positron emission tomography) system
ActiveCN106264588ASolve the problem that the detection efficiency varies irregularly with the activityImprove imaging uniformityRadiation diagnostics testing/calibrationComputerised tomographsCompanion animalSelf adaptive
The invention provides a test method as well as a correction method and device for detection efficiency of a PET (positron emission tomography) system. The test method comprises steps as follows: using the PET system for first acquisition to obtain a first activity related factor affecting the detection efficiency; using the PET system for second acquisition to obtain a second activity related factor according to data obtained through the second acquisition as well as the first activity related factor; removing information affected by the second activity related factor and information affected by geometric distribution information of an acquired object from the data obtained through the second acquisition so as to obtain inherent crystal detection efficiency of a detector. Further, the inherent crystal detection efficiency of the detector is used for correction. The acquired data is subjected to adaptive correction in combination with geometrical structure factors and activity related factors on the basis of the obtained inherent crystal detection efficiency of the detector, so that normalization correction of the system is completed conveniently and accurately.
Owner:SHANGHAI UNITED IMAGING HEALTHCARE
Fiber optic gyro reliability prediction model
The invention discloses a fiber optic gyro reliability prediction model. The fiber optic gyro reliability prediction model is characterized in that 1, a fiber optic gyro comprises an optical path part and a signal processing circuit part; and 2, in a failure rate formula, lambda b1 represents a basic failure rate of the optical path part; a signal processing circuit failure rate is shown in the patent specification; lambda pi represents a work failure rate of a certain component; and Ni represents the number of the component; piK represents a type factor and shows that the fiber optic gyro is an open loop or is a closed loop; piC represents a structure factor and shows that the fiber optic gyro has a single axis, double axes or three axes; piT represents a temperature factor; and piE represents an environment factor.
Owner:FIFTH ELECTRONICS RES INST OF MINIST OF IND & INFORMATION TECH
Method for determining natural wetland restoration plan based on remote sensing images and GIS (geographic information system) spatial analyses
InactiveCN103294902AAchieve recoveryThe processing result is accurateClimate change adaptationSpecial data processing applicationsTerrainSpatial analysis
The invention discloses a method for determining a natural wetland restoration plan based on remote sensing images and GIS (geographic information system) spatial analyses, relates to the method for determining the natural wetland restoration plan, and solves the problems that a conventional natural wetland restoration plan rather focuses on analyses of positioning than researching from a quantitative angle and combining with a GIS spatial analysis technology sufficiently. The method includes steps of 1), acquiring initial data and unifying the same; 2), utilizing the initial data to calculate landscape structure factors, DEM (digital elevation model) data to calculate humidity index and NPP (net primary product) data to divide cultivated land productivity grades; 3), subjecting the landscape structure factors, rivers / roads / density data, terrain data, the humidity index and the cultivated land productivity level acquired in the step 2) to grading, and a wetland to restoration evaluation; 4), determining the wetland restoration plan combined with the GIS spatial analyses and according to wetland restoration evaluation results acquired in the step 3). The method is widely applicable to determination of large-scale wetland restoration plans.
Owner:NORTHEAST INST OF GEOGRAPHY & AGRIECOLOGY C A S
Fractal structure body, fractal structure assembly and production methods and applications for them
InactiveCN1849858APrevent penetrationAvoid reflectionsMagnetic/electric field screeningElongated active element feedLength waveStructure factor
In order to provide a three-dimensional fractal structure that has not been realized by prior art or new technology, the fractal structure of the present invention is a structure with a three-dimensional fractal structure partially or entirely, and in terms of the penetration rate of electromagnetic waves, the The fractal structure has a minimum value in the unique wavelength determined by the structure factor and material of the fractal structure, and / or has a minimum value in the specific wavelength determined by the structure factor and material of the fractal structure in terms of reflectivity of electromagnetic waves.
Owner:OSAKA UNIV +1
System and method for ultrasound scatterer characterization
ActiveUS8915852B2Health-index calculationOrgan movement/changes detectionSonificationSpatial organization
A method for characterizing ultrasound scatterers in a medium comprises receiving ultrasound data representing a region of interest comprising a plurality of scatterers in a medium, the plurality of scatterers including aggregates of the scatterers. The ultrasound data is modeled data using an effective medium theory combined with the structure factor model, the structure factor model defining the spatial organization and concentration of the aggregates. The modeled ultrasound data is compared to theoretical data obtained with the effective medium theory combined with the structure factor model. From the comparison, dimensional data of the aggregates of the scatterers and the volume concentration of scatterers in the medium is determined.
Owner:CENT NAT DE LA RECHERCHE SCI +1
2,4,6-tri(dimethyl phosphate amido)-1,3,5-triazine-tri-melamine salt and preparation method and application thereof
InactiveCN106916188AImprove flame retardant performanceHigh oxygen indexGroup 5/15 element organic compoundsPartial hydrolysisPhosphate
The invention provides 2,4,6-tri(dimethyl phosphate amido)-1,3,5-triazine-tri-melamine salt and a preparation method and an application thereof. The method employs novel processes of dispersing dissolution of an inertia solvent, acidity control, and solvent washing, which solves the problem of easy partial hydrolysis of phosphatide dur to a structure factor. The embodiment result shows that the 2,4,6-tri(dimethyl phosphate amido)-1,3,5-triazine-tri-melamine salt can be successfully prepared by the method of the invention. The product as a fire retardant for being used in materials of PE, PP and PU has excellent flame retardation performance, and the oxygen index is 22.3-28.5%. In addition, with increase of addition of the 2,4,6-tri(dimethyl phosphate amido)-1,3,5-triazine-tri-melamine salt, the oxygen indexes of PE, PP and PU doped with 2,4,6-tri(dimethyl phosphate amido)-1,3,5-triazine-tri-melamine salt during flame retardation are increased.
Owner:HUBEI UNIV
Multidimensional industrial enterprise integrity evaluation method
The invention discloses a multi-dimensional credit evaluation method for industrial enterprises, which is used to solve the technical problem of poor practicability of the existing credit evaluation methods for industrial enterprises. The technical solution is based on the sources of information and full consideration of the perspective of enterprise evaluation. According to the characteristics of the government module, enterprise module and Internet module, the government module evaluation algorithm based on utility function, the enterprise module evaluation algorithm based on fuzzy theory and the efficiency-based Scoring method for Internet module evaluation algorithm. When different evaluation algorithms are used, a unified normalization method is used for the index system under this module to eliminate the differences between the indexes. For the determination of weights in the evaluation algorithm, the government module and the Internet module adopt the widely used analytic hierarchy process, while the Internet module adopts the factor hierarchical weighting method due to the particularity of its indicators. Finally, it is displayed through the radar chart. The evaluation results of this method are complete and comprehensive, and scientifically reflect the integrity level of industrial enterprises.
Owner:NORTHWESTERN POLYTECHNICAL UNIV
Design method for T-shaped microstrip electrode of novel polymer modulator
InactiveCN102096209AMatching speedIncrease modulation bandwidthCoupling light guidesElectromagnetic transmissionElectrical conductorEngineering
The invention provides a design method for a T-shaped microstrip electrode of a novel polymer modulator, belonging to the technical field of optical communication technology, relating to an optical waveguide technology and a microwave technology. The purpose of perfect speed matching can be carried out by means of appropriate electrode parameter design under the condition that the resistance is matched, and the band width of the modulator can be improved in a large degree. The invention provides an embedded type T-shaped microstrip electrode structure, wherein the microstrip of the structure increases the area on the edge of the electrode and reduces the singularity of the edge field, so that the consumption of the conductor is reduced. The design method for a T-shaped microstrip electrode of a novel polymer modulator provided by the invention has the advantages that the basically matched resistance can be obtained in a relatively wide range and the consumption of the conductor can be reduced by regulating the parameters of the structure factors of a microstrip line, and the band width of the modulator is improved.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA
Likelihood-based modification of experimental crystal structure electron density maps
InactiveUS6931329B1Increase electron densityBiological testingSpecial data processing applicationsCrystal structureElectron density
A maximum-likelihood method for improves an electron density map of an experimental crystal structure. A likelihood of a set of structure factors {Fh} is formed for the experimental crystal structure as (1) the likelihood of having obtained an observed set of structure factors {FhOBS} if structure factor set {Fh} was correct, and (2) the likelihood that an electron density map resulting from {Fh} is consistent with selected prior knowledge about the experimental crystal structure. The set of structure factors {Fh} is then adjusted to maximize the likelihood of {Fh} for the experimental crystal structure. An improved electron density map is constructed with the maximized structure factors.
Owner:TRIAD NAT SECURITY LLC
Gamma dash precipitation strengthened platinum group element-added ni-based superalloy designing support program and gamma dash precipitation strengthened plantinum group element-added ni-based superalloy designing support apparatus
InactiveUS20060054251A1Performed easily and efficientlyMolecular designHeat treatment process controlWorking temperatureGroup element
A novel program for supporting design of a γ′ precipitation strengthened platinum group element-added Ni-based superalloy. To support the design, a computer is allowed to function as input means (1) for inputting the composition, working temperature, and working stress of an Ni-based superalloy, storage means (2) for previously storing the constituent elements of the Ni-based superalloy, the structure factor calculation formula thereof, and the alloy characteristics calculation formula thereof, structure factor calculating means (3) for calculating the structure factor from the alloy composition by using the structure factor calculation formula read from the storage means (2), alloy characteristics calculating means (4) for calculating an alloy characteristics from the alloy composition, the structure factor, the working temperature, and the working stress by using the alloy characteristics calculate formula read out of the storage means (2), and output mean (5) for outputting the structure factor and alloy characteristics together with the alloy composition. Therefore, alloy characteristics analysis and alloy composition search of a γ′ precipitation strengthened platinum group element-added Ni-based superalloy are simply, easily, and efficiently conducted. A design supporting device therefor is also disclosed.
Owner:NAT INST FOR MATERIALS SCI
Arc-shaped core-pulling structure for mold
The invention relates to an arc-shaped core-pulling structure for a mold. The arc-shaped core-pulling structure comprises a large sliding block, a self-rotation cylinder and a rotary insert, wherein the self-rotation cylinder is arranged on the large sliding block and is connected with the large sliding block by a rotary shaft; the large sliding block is provided with an arc-shaped containing chamber; the rotary insert is arranged in the arc-shaped containing chamber and is connected with the large sliding block by a pivot; the self-rotation cylinder is provided with a telescopic shaft which is connected with the rotary insert by a pivot. The arc-shaped core-pulling structure has the beneficial effects that the transferring step of force between the components can be greatly reduced, and the self-rotation cylinder directly acts on the rotary core-pulling insert, so that the loss of the force can be reduced; the self-rotation cylinder can rotate by self and is omni-directional without the clamping phenomenon, so that the stability of the mechanism can be improved and further high-speed, high-quality and stable operation of the mold can be achieved; in addition, unstable structure factors in the production process of the mold can be controlled, the mold can be ensured to meet the mass-production requirement, and the quality of the mold and the stable movement of all the mechanisms can be improved.
Owner:JUNYI PRECISION MOLD SUZHOU CO LTD
System and method for ultrasound scatterer characterization
A method for characterizing ultrasound scatterers in a medium comprises receiving ultrasound data representing a region of interest comprising a plurality of scatterers in a medium, the plurality of scatterers including aggregates of the scatterers. The ultrasound data is modeled data using an effective medium theory combined with the structure factor model, the structure factor model defining the spatial organization and concentration of the aggregates. The modeled ultrasound data is compared to theoretical data obtained with the effective medium theory combined with the structure factor model. From the comparison, dimensional data of the aggregates of the scatterers and the volume concentration of scatterers in the medium is determined.
Owner:CENT NAT DE LA RECHERCHE SCI +1
Sound insulation cotton with multi-layer sound absorbing materials and compressor
PendingCN109210757AWide variety of sourcesSimple structurePositive displacement pump componentsNoise suppressionPorosityBody density
The invention belongs to the technical field of noise reduction and discloses a sound insulation cotton with multi-layer sound absorbing materials and a compressor. The sound insulation cotton includes an inner sound absorbing material layer and an outer sound insulation material layer, wherein the sound absorbing material layer includes at least two layers of sound absorbing materials of the samematerial or different materials with the body density increasing layer by layer or the porosity decreasing layer by layer or the flow resistance increasing layer by layer or the structure factor increasing layer by layer from the inside to the outside, the sound insulation material layer includes a layer of sound insulation materials, the sound absorbing material layer is made by stitching all the sound absorbing materials with sutures, and the layer with the largest density or the smallest porosity, the largest flow resistance or the largest structural factor of the sound absorbing materiallayer is cemented with the sound insulation material layer. The sound insulation cotton is advantaged in that the sound insulation cotton has a wide range of sources, simple structure, easy processingand wide applicability, has a higher sound absorption coefficient, is more conducive to noise absorption, especially for noise with a wide frequency band.
Owner:GREE ELECTRIC APPLIANCES INC
Digitized repairing method for grave mural image
InactiveCN104766283AAccurate calculationEliminate distractionsImage enhancementMathematical modelDigital image
The invention discloses a digitized repairing method for a grave mural image, and belongs to the field of digital image repairing. According to the method, a total variation mathematical model is utilized to decompose the grave mural image to obtain a cartoon image; a structure factor term is added in priority calculation, and the cartoon image is utilized to drive the priority calculation of edge points to be repaired; the point with the maximum priority serves as a center to construct a repairing block, and a sample block of which the Euclidean distance with the repairing block is smallest is searched in a known area; the average pixel difference quadratic sum of the repairing block and the sample block is calculated and compared with a set threshold value, the size of the repairing block is self-adaptively adjusted until the copy condition is met, and sample copying and edge updating are performed; lastly, an area to be repaired is checked, and if the area to be repaired is not null, the above steps are iterated until repairing is completed. The method overcomes the problems such as incoherence and overstretching generated in repairing of an existing method and is mainly used in (but not limited to) virtual repairing of the grave mural image.
Owner:ZHONGBEI UNIV
cable welding wire
ActiveCN105665955BStable weldabilityImprove the pass rate of twistingWelding/cutting media/materialsSoldering mediaEngineeringStructure factor
The invention provides a cable type welding wire. The cable type welding wire comprises a center welding wire and n peripheral welding wires arranged around the center welding wire in a spiral rotating manner, wherein the diameter of each of the peripheral welding wires is d, and the neighboring peripheral welding wires are separately arranged in an intersecting manner. The cable type welding wire is characterized in that the lay length T of each of the peripheral welding wires is equal to K*m*d, wherein K is the structure factor of the peripheral welding wires, m is the lay length multiple, and d is the diameter of each of the peripheral welding wires; K is larger than or equal to 1, and less than or equal to 1.5; m is larger than or equal to 20, and less than or equal to 25. According to the cable type welding wire provided by the invention, wire breakage is not liable to generate in the manufacturing process; during welding, the peripheral welding wires are arranged compactly, so that the wire feeding process is more stable, and the welding performance of the cable type welding wire is improved.
Owner:SUZHOU YINLI WELDING IND TECH CO LTD
Method for determining coal seam coal structures
ActiveCN107227953AAccurate discriminationDiscriminant continuousData processing applicationsUnderground miningElectrical resistance and conductanceWell logging
The invention provides a method for determining coal seam coal structures. The method is characterized in that technical support is provided for continuous coal seam coal structure type evaluation, coal seam perforation layer selection and permeability evaluation, pulverized coal production and the like. The method specifically includes the steps of firstly, performing coal structure judging on a coal core; secondly, measuring the well logging curve of the corresponding section of the coal core, and performing normalization processing, wherein the well logging curve comprises well diameter CAL, virgin zone resistivity Rt and natural gamma GR; thirdly, building coal structure factors Fcs according the well logging curve after the normalization processing in the second step; fourthly, acquiring the classification standards of the coal structure factors Fcs of different-coal-structure coal seams; fifthly, using well logging information to continuously determine the coal seam coal structures according to the built coal structure judging factors and the classification standards.
Owner:BC P INC CHINA NAT PETROLEUM CORP +1
On-line monitoring system for sag of overhead power transmission line
PendingCN110307825AReal-timeRealize the alarmThermometer detailsHeight/levelling measurementInformation supportMonitoring system
The invention discloses an on-line monitoring system for sag of an overhead power transmission line. The on-line monitoring system comprises dip angle measurement sphere units, wherein the dip angle measurement sphere units are suspended at two ends of the power transmission line. Due to an error in measurement of a dip angle of a suspension point caused by a mechanical structure factor and a sensor, a ground distance measurement sphere unit is further arranged at the lowest position of the sag of the power transmission line. A calculation result of the sag can be corrected by combining directmeasurement of the sag on ground, the error in the measurement of the dip angle of the suspension point caused by the mechanical structure factor and the sensor can be effectively corrected, and thesag measurement accuracy is greatly improved; and moreover, by direct measurement of the sag on the ground, actual height of a wire on the ground can be obtained, and more effective information support can be provided for circuit maintenance when an abrupt event such as illegal building, tree growth and engineering machine occurs below a wire.
Owner:李立学
Method for preparing iron oxide nanoparticles by utilizing tea leaves
ActiveCN109879326AOvercome immobilization rate effectsIncrease fix rateNanotechnologyFerric oxidesRoom temperatureIron oxide nanoparticles
Owner:XINYANG NORMAL UNIVERSITY
Image identification-based vehicle load measurement method
InactiveCN110530483AOptimize layoutEasy to implement later installationWeighing apparatus using elastically-deformable membersUsing optical meansContact modeEngineering
The invention discloses an image identification-based vehicle load measurement method and relates to the field of vehicle load measurement. Stress and deformation of a steel plate spring is in a linear relation, a picture of a mark pasted on a side surface of the steel plate spring is shot by a camera, a circle center of the mark is obtained by image identification, the deflection of the steel plate spring is obtained by calculation, a load is measured according to the deflection, so that the actual load of the whole vehicle can be obtained. An image identification method is employed, and compared with other methods, the image identification-based vehicle load measurement method is very convenient to arrange; and with a non-contact mode, a vehicle structure is not damaged, the influence ofa site structure factor is very small, and subsequent loading is very easily achieved. The accuracy can be achieved by adjusting a camera position according to a demand, and measurement with relatively high accuracy can be achieved by debugging.
Owner:北京清行智能科技有限公司
Method for obtaining a structure factor of an amorphous material, in particular amorphous glass
Owner:原子能和辅助替代能源委员会
Absorption structure and manufacturing method thereof
InactiveCN108807573AIncreasing the thicknessPromote absorptionFinal product manufacturePhotovoltaic energy generationHigh absorptionEngineering
The invention provides an absorption structure and a manufacturing method thereof, wherein the absorption structure is composed of a structural unit and a plurality of through holes arranged on the structural unit and is characterized in that the manufacturing method comprises the following steps: step 1: obtaining a size L of the structural unit; step 2: determining a restricted wave vector rangekc according to the size L; step 3: making the wave vector within the wavenumber range kc satisfy the condition that the structural factor is equal to 0; step 4: obtaining a distribution of the through holes, wherein the distribution of the through holes meets that the value of the structural potential function is the minimum in a molecular dynamics simulation. Compared with the prior art, the absorption structure has the advantages that the absorption structure can be used as a super-homogeneous absorption structure that is not sensitive to polarization state of incident light in a thin filmsolar cell; under a vertical incidence condition, the absorption structure can absorb as much as 67.8% of light in the solar wave band as a whole, which is 1.74 times of that of an unstructured and amorphous silicon thin plate, and can absorb more than 80% of light within a specific broad band, indicating a characteristic of high absorption in a broad band.
Owner:SHANGHAI JIAO TONG UNIV
Sound absorbing device used for U-beam composite structure of light rail
ActiveCN104631354AImprove the noise reduction effectReduce noiseNoise reduction constructionNoise reduction coefficientPolyvinyl chloride
The invention relates to the field of light-rail sound absorption, in particular to a sound absorbing device used for the U-beam composite structure of the light rail. The sound absorbing device comprises a sound absorbing device body, the sound absorbing device body is composed of a microporous plate, tin foil, sound absorbing cotton, a cavity and a bottom plate from outside to inside, the surface of the microporous plate is provided with micropores spaced, the tin foil is closely attached above the sound absorbing cotton, spaced projections are arranged on the bottom plate, and the height of the projections is identical with the height of the cavity. The sound absorbing device is of composite structure, the microporous plate is an aluminum alloy pore plate or an inorganic pore plate, the bottom plate is molded by PVC (polyvinyl chloride) alloy materials by a vacuum casting process. The sound absorbing device is filled with the sound absorbing cotton (with noise reduction coefficient larger than or equal to 0.88), and is specially designed from the aspects of flow resistance of an acoustic panel absorber, porosity, structure factor, thickness, density, surface material treatment and mounting, advantages of various single materials can be sufficiently given into play, high, medium and low frequency broad-spectrum noise is reduced, and the sound absorbing device has the advantages of simplicity, convenience, attractive appearance and practicality.
Owner:QINGDAO SENDATA TECH
Identification code and its mark made-up by element unit comination
InactiveCN1581203AEasy to addEasy to changeCharacter and pattern recognitionSensing record carriersGraphicsBarcode
The present invention improves the limitations of application range of cloth material and paper box, etc. on which the existent bar code is difficult to read and decode, and provides new code and its code identification method. It is characterized by that the pattern or characters are partically separated into factor unit portion and non-factor unit portion which can be used as composition of code structure factor units, and the factor of complex numbers from E1 to En and synthetically-recorded factor can be used as strong and weak structure of light reflectivity of colour phase or concentration and density. Said invention can save space, and can record high-integrated data, its identification is easy, it can be extensively used in various automatic identification systems.
Owner:龚志文 +2
Face Recognition Method Based on Structural Factor Analysis
ActiveCN104239859BPreserve local clustering propertiesImprove recognition rateCharacter and pattern recognitionHat matrixPattern recognition
The invention discloses a face recognition method based on structuralized factor analysis. The problem that the face recognition accuracy rate is low due to the fact that local clustering features and a global distribution structure of face image data cannot be kept in the prior art is mainly solved. The face recognition method comprises the achieving steps of 1 dividing a face image data set; 2 performing clustering analysis on all training sample data; 3 calculating an optimal feature projection matrix through Gibbs sampling; 4 extracting low-dimension features of all test sample data and the training sample data; 5 recognizing a face image. The face recognition method synthesizes the local clustering features and the global distribution structure of the face image data and improves the face recognition accuracy rate.
Owner:XIDIAN UNIV
Method and system for calculating orientation system structure factor in SAXS calculation
ActiveCN107589139AHas rotational symmetryGood data supportMaterial analysis using wave/particle radiationSmall-angle X-ray scatteringScale structure
The invention relates to a method for calculating an orientation system structure factor in SAXS calculation. The method comprises acquisition: acquiring length-diameter ratios of scatterers subjectedto SAXS synchrotron radiation light source irradiation, determination: determining structure factor calculation formulas of different scatterers according to the length-diameter ratios and calculation: respectively calculating structure factors of the different scatterers according to the different calculation formulas. The invention also relates to a system for calculating an orientation systemstructure factor in SAXS calculation. The method and system can acquire more precise structure factors of scatterers of the more dense orientation system and provide good data support for the non-destructive detection of the effectively observed material mesoscopic scale structure based on small-angle X-ray scattering SAXS.
Owner:SHENZHEN UNIV +1
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