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49 results about "Structure factor" patented technology

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

Flat-plate crack antenna modelling approach based on SVMR

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

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 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

Method for determining natural wetland restoration plan based on remote sensing images and GIS (geographic information system) spatial analyses

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

Multidimensional industrial enterprise integrity evaluation method

InactiveCN107122887AReflect level of integrityEliminate differencesResourcesRadarThe Internet
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

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

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

Sound insulation cotton with multi-layer sound absorbing materials and compressor

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

Method for preparing iron oxide nanoparticles by utilizing tea leaves

The invention discloses a method for preparing iron oxide nanoparticles by utilizing tea leaves. The method comprises the following steps: 1) dissolving iron hydrate into a tea water extracting solution; after refluxing for 20 to 40 min under the protection of N2 and under the conditions that the temperature is 60 to 100 DEG C and the stirring speed is 900 to 1100 rpm, adding a precipitating agentand refluxing for 20 to 40 min; then adding a stabilizer and refluxing for 50 to 70 min; cooling to room temperature to obtain a black mixture, wherein the iron hydrate is a mixture of FeCl3.6H2O andFeCl2.4H2O and the stabilizer is citric acid; 2) washing and separating a black mixture in step 1) to obtain the iron oxide nanoparticles. According to the method disclosed by the invention, the citric acid is fixed on the nanoparticles through a homogeneous reaction manner and influences on the immobilization rate of the nanoparticles, caused by an immobilized carrier structure factor in non-homogeneous reaction, are overcome; the obtained nanoparticles have a high immobilization rate and immobilization reaction of the citric acid and reduction reaction of the tea water extracting solution are carried out step by step; when the citric acid is immobilized, the nanoparticles are molded and a preparation process is simplified; and the prepared iron oxide nanoparticles have good monodispersity and cellular compatibility.
Owner:XINYANG NORMAL UNIVERSITY

Method for obtaining a structure factor of an amorphous material, in particular amorphous glass

According to the invention, an incident X-ray is transmitted in a wide angular sector towards a sample of amorphous material that scatters back the X-rays. The method comprises: a step of storing experimental photonic intensity measures based on the incidence angle; a step of correcting the experimental intensity while taking into account at least the absorption phenomena within the sample based on the penetration length l of the incident wave inside the sample before reflection; a standardisation step of reporting the corrected intensity resulting from the experimental intensity to an electronic intensity according to a standardisation coefficient (Alpha); a step of calculating a discretised function Q.i ( Q ), i being a reduced intensity resulting from the measures of the corrected and standardised experimental intensity and Q being the module of the wave scattering vector proportional to the value sin Theta / Lambda, 2Theta being the scattering angle and Lambda being the length of the transmitted wave, the standardisation constant (Alpha) recursively varying in order to minimise the slope of the affine straight line (42) obtained by linear regression of the values of the function Q.i ( Q ), the reduced intensity values being calculated upon each iteration for a penetration length l, and the sought (41) function Qi ( Q ) corresponding to the minimum slope; and a step of determining the structure factor from the distribution of the radial atomic concentration Rho(r) based on Qi ( Q ).
Owner:原子能和辅助替代能源委员会

Absorption structure and manufacturing method thereof

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

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
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