34 results about "Boundary treatment" patented technology

The invention relates to an NaI (TI) scintillation detector gamma energy spectrum high-resolution inversion analysis process and method based on a gauss response matrix. The analysis process comprises the steps of spectral line pretreatment, peak searching and peak boundary treatment, resolution ratio ruling, background subtraction, gauss response matrix generation and inversion analysis. According to the feature of an NaI (TI) scintillation detector and the physical property of the spectrum forming process, response, in the detector, of different energy gamma photons corresponds to different full widths at half maximum of a photo peak, and the photo peak is approximate to a gauss function in shape. The parameters of the full widths at half maximum of a spectral line are extracted, the background is subtracted from the full widths at half maximum adaptively, the universal gauss response matrix between a radioactive source and a gamma spectrum is constructed, and finally the response matrix is used for inversion analysis of other gamma instrument spectrums measured by the NaI (TI) scintillation detector. The result analyzed through the method is an energy point corresponding to the measured spectral line under the response matrix or is approximate to the solution of a physical spectral line in theory, and the ability of the method to analyze the spectral line is obviously improved.

The present invention discloses a method of network boundary disposal, which comprises: a signaling channel is established between a first SIP terminal and a second SIP terminal; and a media cannel is established between the first SIP terminal and the second SIP terminal. The network boundary disposal method provided by the present invention can realize that a conversation edge controller is adopted to conduct firewall or NAT crossing with no change to the prior network rack. The method is a network boundary disposal mechanism which is widely used for the network systems based on SIP such as the 3G core network and the next generation network.

The invention discloses a method for drawing a depth image on the basis of a 3D video and a free-viewpoint television. The method for drawing the depth image on the basis of the 3D video and the free-viewpoint television includes the following steps of synchronizing a production mechanism, erasing background artifacts, combining viewpoints, and conducting hole filling and boundary treatment on the basis of the depth. According to the method for drawing the depth image on the basis of the 3D video and the free-viewpoint television, through a hole filling and boundary treatment method based on the depth, the problems of the hole filling and distortion of the foreground boundary are solved.

The invention relates to a method for calculating core permeability by adopting digital core simulation. The method comprises the following steps: a, a physical model of porous core media is simulated with the Lattice Boltzmann Method; b, physical field initialization and boundary treatment are performed on the physical model of the porous core media, according to the boundary treatment, mirror boundary is taken as a boundary condition for the Lattice Boltzmann Method, and a simulation area and a plurality of mirror areas with the same structure with the simulation area can be obtained; c, mass force is used for driving a fluid to flow in the simulation area; d, a density distribution function of the simulation area is calculated according to the treated physical model of the porous core media; e, the core permeability is simulated and calculated according to the mass force and the density distribution function. With adoption of the method, the core permeability calculating accuracy is improved, and the core permeability calculating time is shortened.

The invention belongs to the field of static testing and predicting, and particularly relates to a static testing and predicting method for a shell stiffened structure. Under different load actions and different boundary treatment ways, the static predicting simulation result of the structure is compared with the testing data. Systematic comparison and comprehensive evaluation of correlated errors, which are conducted on static testing and static predicting simulation, are achieved, and the problem that in the past, only extremely specific feature points are subjected to data analysis and comparison is solved; impact factor data of real test or simulation are calculated through contrastive analysis in different grades and accumulation of different boundary simulation ways, different solving ways and different testing methods; and the relation between testing and predicting can be intuitively responded through comparison of cloud charts, curves and similarities, and whether a test is conducted continuously or not, whether a test piece is needed or not and whether human and property are security or not can be determined through evaluation of data.

The invention discloses a natural image shadow elimination method. The method includes the steps of extracting a shadow area through an interaction sample and the image matting thought, decomposing an input image into a shadow block set and a non-shadow block set through the shadow illumination distribution, finding a block with the texture most similar to the texture of each shadow block in the shadow area in the non-shadow block set to serve as the matched block of the shadow block, eliminating shadows in the shadow blocks through illumination recovery operators in the method according to information of the matched blocks, conducting the weighted average operation on overlapped areas between the blocks so as to achieve the shadow elimination result that the areas between the blocks are smooth and the illumination of the blocks is consistent with the illumination of the surrounding environment, and conducting the restrained texture synthesis operation on the area where boundary treatment needs to be conducted so as to achieve a more natural shadow elimination result. The shadow elimination method is good in effect, and the illumination recovery operators in the method can be used for various applications.

A method for displaying a map performed by a navigation system, the method comprising: defining a matching area of a numerical map to which a photomap is matched; extracting the photomap corresponding to the matching area from a map data storage; matching a reference point of the photomap and a reference point of the numerical map; matching a scale of the photomap in line with a scale of the numerical map; and performing a boundary treatment at an overlap area of the numerical map and the photomap that are matched.

The invention discloses an SPH (Smoothed Particle Hydrodynamics) algorithm based symmetric boundary treatment method. The method is characterized by comprising the following steps: creating a simulation model to be subjected to simulation analyzing, and initializing; calculating the pressure value, stress tensor and artificial viscosity value of each particle corresponding to the simulation model; performing search analysis on the simulation model within each set time step; calculating a state equation and control equation corresponding to the simulation model; if a symmetric boundary is in the simulation model, performing acting pair information supplementation on the simulation model; and outputting a corresponding simulation result based on the set end condition. According to the method, the existing action pair information is screened and supplemented, so that the additional time of generating mirror particles and researching can be saved while the operation of additionally generating the mirror particles and dividing background grids for the mirror particles to research is avoided, and thus the symmetric boundary treatment and the common researching calculation are unified to treat.

The invention provides a boundary treatment method of coupling a direct-current resistivity element-free method with a finite element method. The boundary treatment method includes the steps of building a small-range element-free method area omega 1 to a two-dimension geoelectric model, calculating by the element-free method for the area, covering the element-free method area omega 1 with regularly distributed rectangular or parallelogram background grid to obtain an element-free method equation set of the area; subdividing the periphery of the element-free method area omega 1 by finite element method grid which is capable of rapid expansion, building a large-enough finite element method area omega 2 which meets requirements of first class of boundary conditions, calculating by the finiteelement method to obtain a finite element equation set of the area; combing the equation sets of the two areas and solving to obtain parameter of the apparent resistivity of an observation point. Themodels can be discrete on the basis of arbitrary node distribution by the method, the boundary treatment method has high adaptability to any complex geoelectric models, and calculation efficiency of forward modeling in the conventional direct-current resistivity element-free method is improved since boundary treatment is carried out by means of the finite element method.

The invention belongs to the technical field of image saliency detection, and relates to an image saliency detection method based on semi-supervised. The method comprises the following steps: S1, establishing a coordinate system: establishing a plane coordinate system, establishing a plane coordinate system based on an operating system, establishing a plane coordinate system abscissa X, a longitudinal axis Y, and a coordinate origin O; S2, inserting an object and dividing an area; S3, object processing in the area unit; S4: prominent point highlights, background grammaticalization; 5, saving the area modular combination. In this scheme, the detection object is operated separately through the division of the region blocks, and the region blocks can be enlarged, each region block is taken asan individual unit, so that each region block does not affect each other, the boundary treatment is relatively completed, and the region blocks are operated separately, so as to reduce the recognition error of the identification object.

The invention relates to a complex signal anti-interference matrix upper triangularization method and a signal anti-interference processing device. The method comprises the steps of conducting CORDIC twiddle modulo operation on input first complex signal data and stored real number data in a boundary treatment unit to obtain a modulo end value and a twiddle factor, updating the real number data with the modulo end value, and outputting the obtained twiddle factor to a backward internal treatment unit; conducting two-stage CORDIC twiddle operation on the input complex signal data and stored third complex signal data in the internal treatment unit according to the twiddle factor output by the forward boundary treatment unit to obtain fourth complex signal data and fifth complex signal data, updating the third complex signal data with the fifth complex signal data, and outputting the fourth complex signal data to a follow-up boundary treatment unit or internal treatment unit. By the adoption of the scheme, operation speed can be increased, and resource occupancy rate can be reduced.

The invention is suitable for the field of ocean engineering and provides a deep-sea riser segmented model forward flow forced vibration experimental device under the action of uniform flow. The deep-sea riser segmented model forward flow forced vibration experimental device comprises a deep-sea riser module, end part false body modules, a fixing module, a sliding module and a measurement analysis and control module, wherein the two ends of the deep-sea riser module are connected with the end part false body modules respectively; the fixing module is connected with the end part false body modules and the sliding module respectively; the sliding module is fixedly connected with the bottom of one end of a trailer truck; and the measurement analysis and control module is arranged on the trailer truck, and is connected with the deep-sea riser module, the end part false body modules and the sliding module respectively. The invention aims to solve the problems that the conventional experimental device can only be used for simulating sea conditions with low Reynolds numbers and boundary treatment is not performed on riser segments; a riser model with an appropriate slenderness ratio is selected, so that the practical Reynolds number of 106 can be reached, and the scale effect is avoided effectively; and a flow field is simulated through false bodies, so that the problem of boundary effects on both sides of the model is solved.

The invention provides an inside and outside boundary treatment method of isogeometric analysis. The method includes the steps of establishing parameter space of the same topological structure with a part or a region, expressing the parameter space of the part or the region with open node vectors through a node insertion method, representing the surfaces of every three-dimensional body with normal and normal coordinates of the parameter space, generating open node vector expression of the surfaces of every three-dimensional body, calculating basis functions of the surfaces of every three-dimensional body in accordance with the obtained open node vector expression, and projecting inside and outside the boundary conditions of unknown field quantity in discrete function space through isogeometric analysis to complete boundary condition treatment. When the inside and outside boundary treatment method of isogeometric analysis is used for completing the boundary condition treatment of engineering problems, a numerical calculation problem can be converted into a logical judgment problem, and the logical judgment is more efficient than the numerical calculation and easier to achieve, so that the topological relationship judgment of isogeometric analysis is solved at higher efficiency.

The invention discloses a cast asphalt concrete paving and construction process. The process comprises the following steps: 1) a preparation section, wherein raw material mix proportion design, resource inspection, transport vehicle preheating, bridge deck measurement and bridge deck cleaning are conducted; 2) a production section, wherein mixed material production and quality inspection are carried out; 3) a transportation section; 4) a paving section, including preparation before paving, mixture paving, penetration test and treatment after paving; and 5) a detection section, wherein seam setting, boundary treatment checking and accepting are conducted. According to the invention, cast asphalt concrete has the advantages of being good in impermeability, high in construction speed, high in deformation adaptability, convenient and easy to construct, weak in dependence on environmental climate, small in influence of the environmental climate, even capable of being constructed in winter, short in paving time and capable of reducing interference to the surrounding environment.

The invention provides a three-dimensional laminated structure dynamics analysis method, belonging to the technical field of structure dynamics. The core of the analysis method of the invention is that on the basis of the three-dimensional elastic theory, the series of the mixed orthogonal polynomial is introduced into the state space method, and because of the existence of the boundary characteristic function, the limitation of the boundary condition can be effectively overcome, and the multi-boundary condition can be effectively and flexibly processed. Based on the three-dimensional elastictheory and fully considering the lateral deformation and the interlayer continuous condition, the invention establishes a high-precision mathematical model suitable for multi-boundary conditions; In the process of boundary treatment, only adjusting the parameters of boundary characteristic function can realize the effective treatment of different boundaries, without re-modeling or re-programming,to achieve unified treatment, greatly reduce the computational cost and improve the computational efficiency.

The invention discloses a method for constructing a biomembrane model of membrane biological sewage treatment. The method comprises the steps that a lattice Boltzmann equation is selected according tophysical models of a biomembrane and a reacting device; a deformable boundary treatment format of the biomembrane is determined according to the selected lattice Boltzmann equation, and macro parameters of the biomembrane under different flow rate conditions are obtained, wherein the macro parameters at least comprise the position of biomembrane boundary, fluid density, deformation speed and thestressing parameter of the biomembrane boundary over time; aspect graphs of the biomembrane under different flow rate conditions are drawn according to the obtained parameters, and the interaction between the biomembrane and the fluid under different flow rate conditions is simulated and calculated to determine the moving situation of a biomembrane interface. According to the method, by the simulation of an internal flow field of a membrane biological reacting device and values of biomembrane boundary deformation, the moving characteristics of the biomembrane and the influence of deformation of the biomembrane in solvent fluid on flowing characteristics are studied to further provide a certain degree of guiding and predicting for actual engineering application.