14 results about "Decahedron" patented technology

This invention provides a tensioned monolithic system formed by a one-dimensional array of polyhedral tensioned monolithic modules. The system includes several module units, a back tie, a front tie, and a lower tie. These module units are arranged in a one-dimensional series to form the tensioned monolithic system. Each module unit is either a 6-bar, 24-30-cable tensioned monolithic module formed by discrete icosahedrons or a 5-bar, 20-24-cable novel tensioned monolithic module formed by discrete tetrahedrons. Each tensioned monolithic module consists of longitudinal horizontal pressure bars, transverse horizontal pressure bars, and vertical pressure bars connected sequentially to the ends of the pressure bars by cables. Seven types of 6-bar, 24-30-cable icosahedral novel tensioned monolithic modules and five types of 5-bar, 20-24-cable tetrahedral novel tensioned monolithic modules are used, and these polyhedral tensioned monolithic modules are arranged in a one-dimensional array to form a continuous architectural functional space for passage or residence of personnel and vehicles. The modules can be arranged with equal or unequal heights and widths to create a staggered, natural architectural form. Ties or rods are added between the modules to form a unified whole.

The invention discloses separation and application of a vibrio parahaemolyticus lytic bacteriophage vBVpaSR27Z (Vibrio parahaemolyticus lytic bacteriophage). The preservation number of the bacteriophage vBVpaSR27Z is GDMCC No: 67438-B1 (GDMCC No: 1). The bacteriophage is separated from an environmental sample by adopting a double-layer plate method, the head of the bacteriophage is in a regular icosahedron shape (84 nm * 71 nm), the tail length of the bacteriophage is about 141 nm, the incubation period of the bacteriophage is only 20 min, the lysis speed is high, and the activity of the bacteriophage is stable within the pH range of 5-10 and the temperature range of 4-37 DEG C; the genome of the vibrio bacteriophage is double-stranded DNA without known drug resistance and toxicity genes, phylogenetic analysis shows that the vibrio bacteriophage has low homology with known vibrio bacteriophages, and the vibrio bacteriophage belongs to a novel genetic resource. The vBVpaSR27Z can rapidly inhibit the growth of strains such as vibrio parahaemolyticus, is suitable for green prevention and control of diseases such as vibrio parahaemolyticus in aquaculture, and can be used as an active component of a biological antibacterial preparation.

The invention belongs to the technical field of optics, and particularly relates to a compound eye pupil optimization method. Comprising the following steps: S1, taking an external spherical surface of a regular icosahedron as a sub-eye distribution carrier, and uniformly distributing sub-eyes of the heterogeneous curved surface compound eye system through edge subdivision optimization, multi-direction surface subdivision and clustering and gravity center calculation; and S2, calculating an equivalent inclination angle generated by each sub-eye channel in the optical relay system of the heterogeneous curved surface compound eye system due to pupil shift, and based on the equivalent inclination angle of each sub-eye channel, applying inclination compensation which is equal in size and opposite in direction to each sub-eye on a physical structure so as to realize optical path correction of the heterogeneous curved surface compound eye system. The performance of the heterogeneous curved surface compound eye system can be remarkably improved, the distribution uniformity of sub-eyes is remarkably improved, and the edge imaging quality is greatly improved.

The invention provides an encoding method of a spherical equal-product hexagonal grid system, and relates to the technical field of geographic information system spatial data management, and the method comprises the steps: determining the grid resolution and hierarchy required by a target application scene based on icosahedron subdivision Snyder equal-product projection, and constructing a global discrete grid model; performing recursive and staggered seven-way tree subdivision on each triangular surface in the global discrete grid model to form a multi-level hexagonal grid system with approximately equal area; a binary code is distributed to each grid unit in the multi-level hexagonal grid system; and based on the binary codes, defining addition and subtraction operation rules between the grid codes, and calculating the relative displacement of the two grids in the space through the addition and subtraction operation rules of the codes. According to the technical scheme, the recursive hexagonal equal-product grid coding system with clear father-son affiliation can be adaptively constructed, and efficient space calculation and indexing are achieved through binary coding operation.

The utility model relates to the technical field of educational toys, and discloses a third-order icosahedron magic cube which comprises a ball shaft, a plurality of center blocks, a plurality of angle blocks and a plurality of inner edge blocks. The plurality of ball shafts comprise a plurality of magnetic shaft columns; a plurality of first magnets are arranged in the plurality of center blocks; a plurality of second magnets are arranged in the plurality of angle blocks; a plurality of third magnets are arranged in the plurality of inner edge blocks; the first magnet and the third magnet attract each other, and the second magnet and the third magnet attract each other. The magnets attract each other to assist a player to quickly reset and align the magic cube when the magic cube is restored, so that the restoration speed and the player experience are improved. The three-order icosahedron magic cube aims at solving the problems that a traditional three-order icosahedron magic cube is difficult to align during rotation and is prone to being blocked, and the recovery speed of the magic cube and the experience feeling of players are improved.

The application discloses a naked-eye 3D immersive interaction method and system applied to a giant ball building, and relates to the technical field of naked-eye 3D interaction; the naked-eye 3D immersive interaction method and system are characterized in that the geometric parameters of the giant ball building and the display screen array distribution parameters are collected, a regular icosahedron is used to construct a spherical surface partition and a viewing area mapping, multi-source collaborative positioning is realized in combination with an ultra-wideband and an inertial measurement unit, and errors are compensated, a parallax adaptation image is generated based on the user position, the line of sight and the virtual object depth, motion prediction and pre-rendering are used to optimize the interaction response, the positioning accuracy and the delay evaluation are synchronously completed, the problems of inaccurate naked-eye 3D interaction positioning, poor parallax adaptation and high response delay in the giant ball building are effectively solved, and the positioning accuracy, the parallax adaptation accuracy, the interaction response speed and the user immersive experience are significantly improved.

The invention provides a three-dimensional Gaussian splash data acquisition quality evaluation method and device, and relates to the technical field of image data processing, and the method comprises the steps: carrying out the voxelization discrete processing of point cloud data corresponding to a target scene, so as to construct a voxel map based on a Hash structure, and the voxel map comprises a plurality of voxels; performing rasterization calculation on the plurality of voxels one by one to determine observability information of each voxel under different visual angles, and generating a visual angle observation set corresponding to each voxel; performing modeling on the voxel by adopting a regular icosahedron structure, and performing observation confidence calculation on the voxel based on the distance parameter corresponding to each view angle and the view angle observation set; and determining a quality evaluation result of the corresponding point in the voxel based on a calculation result. According to the method, the potential defect area is found in time in the data acquisition stage, later modeling failure or rendering quality degradation is avoided, and the overall efficiency and controllability of the three-dimensional data acquisition and three-dimensional reconstruction process are improved.

The star table partition method, system and terminal provided in the application divide the celestial sphere into 20x(N+1) 2 sub-regions, that is, the star table is divided into 20x(N+1) 2 sub-regions, wherein N [0, +infinity); an intersection equation of a star pointing and a sub-region of the celestial sphere is established; the intersection equation of the star pointing and the sub-region of the celestial sphere is solved; and stars corresponding to each sub-region of the celestial sphere are screened from the star table. The star table partition method, system and terminal provided in the application utilize a regular icosahedron inscribed in the celestial sphere to uniformly partition the celestial sphere, and improve the problem of uneven star table partition and low partition degree by adjusting parameters, and are easy to implement.

The invention belongs to the technical field of ionosphere total electron content forecasting, and relates to a global ionosphere total electron content forecasting method and system based on a graph neural network, and the method comprises the steps: obtaining global ionosphere TEC data of the first 24 hours; obtaining geomagnetic and solar activity index data of the first 24 hours; carrying out sequence conversion and stacking on the obtained data; inputting the stacked data into a pre-trained graph neural network to obtain a prediction result of the global ionosphere TEC in the next 24 hours; the graph neural network simulates the three-dimensional spherical surface of the ionized layer, adopts an encoder-processor-decoder architecture, and introduces a regular icosahedron and a subdivided regular polyhedron thereof to simulate local and global information transmission of the electron content of the ionized layer. According to the method, a regular polyhedron structure is introduced, three-dimensional spherical simulation is directly carried out by utilizing the graph neural network, and a relatively good prediction effect is achieved in a geomagnetic quiet period or a magnetic storm period.

This invention discloses an adaptive parallel global icosahedral unstructured mesh encoding generation and subdivision method, relating to the field of spatial information technology. It includes: obtaining an initial mesh code based on a regular icosahedral spherical rhombic mesh designed with a simple linear sequential filling; setting the number of cores and determining the encoding method based on the set number of cores to obtain a new mesh code; converting the relationship between the new mesh code and the initial mesh code to a one-to-one correspondence with Earth's latitude and longitude; updating the mapping table based on the geometric relationship between U-grids and T-grids in the new mesh code, generating an nc format image file that can globally display the one-to-one correspondence between the code and geographical location. This invention optimizes the number of boundaries between cores by modifying the mesh code through changes in the number of cores, significantly reducing the boundary communication volume between cores, shortening the boundary communication time, and making it easier for the program to achieve load balancing.

The invention relates to an organic glass manned cabin forming process based on truncated icosahedron segmentation and bonding welding, relates to the technical field of manned submersible, and aims to solve the problems that internal stress is generated due to polymerization heat release degradation and non-uniform shrinkage, bubbles are difficult to discharge, flow filling is difficult and the like during integral injection molding of a large-thickness organic glass manned cabin. A spherical manned cabin blank is creatively divided into twelve pieces of regular pentagon-like organic glass sheets and twenty pieces of regular hexagon-like organic glass sheets according to a truncated icosahedron. Each single sheet is independently processed by adopting a mature hot bending forming process, so that the consistency of processing quality is ensured; the outer surface of the combined blank is coated with a high-temperature-resistant airtight film and vacuumized, the combined blank is placed in a bonding chamber, high-pressure hot melting bonding is conducted by applying specific temperature and pressure, and it is guaranteed that the bonding face is evenly stressed while all the single pieces are fused into a whole; and finally, a finished product is formed through annealing treatment and machining, and the full-transparent organic glass manned cabin which is high in quality and resistant to high pressure can be manufactured.

The application provides a three-dimensional Gaussian splash data acquisition quality evaluation method and device, relates to the technical field of image data processing, and comprises the following steps: voxelization and discrete processing are performed on point cloud data corresponding to a target scene to construct a voxel map based on a hash structure, the voxel map comprises a plurality of voxels; rasterization calculation is performed on the plurality of voxels one by one to determine the observability information of each voxel under different viewing angles and generate a viewing angle observation set corresponding to each voxel; the voxels are modeled by using a regular icosahedron structure, and the voxels are observed and confidence is calculated based on the distance parameters corresponding to each viewing angle and the viewing angle observation set; and based on the calculation result, the quality evaluation result of the corresponding points in the voxels is determined. The application can discover potential defect areas in time in the data acquisition stage, avoid modeling failure or rendering quality degradation in the later stage, and improve the overall efficiency and controllability of the three-dimensional data acquisition and three-dimensional reconstruction process.

This invention provides a method and system for super-resolution of spherical signals, comprising: constructing a parameterized spherical icosahedral triangular mesh; projecting an equidistant rectangular projection image (ERP) from two-dimensional space onto the icosahedral triangular mesh to obtain a spherical mesh signal; passing the spherical mesh signal through a first feature extractor to obtain a first multi-scale feature; passing the first multi-scale feature through a second feature extractor to obtain a second multi-scale feature; expanding the second multi-scale feature based on an adaptive filter learning of Chebyshev polynomials and spherical pixel recombination to obtain spherical mesh expanded features; reconstructing the upsampled spherical mesh signal; and inversely projecting the upsampled spherical mesh signal onto the ERP to obtain a super-resolution spherical image. This invention enables high-quality representation learning and detail characterization of low-resolution spherical image inputs, especially in ultra-high magnification image super-resolution tasks, generating super-resolution spherical images with more complete details and less distortion.

The present application belongs to the technical field of global discrete grid system, and particularly relates to a geographic spatial data representation method based on rhombic triacontahedron equivalent projection. The method first deduces the equivalent projection formula of rhombic triacontahedron and the earth surface, including the forward projection formula and the inverse projection formula, then projects the geographic spatial data onto the rhombic triacontahedron development surface by using the forward projection formula, and constructs a plane map, i.e. the plane representation method of geographic spatial data, and generates a spherical equivalent discrete grid system by using the inverse projection formula, so as to realize the spherical gridding representation of geographic spatial data. The rhombic triacontahedron adopted in the present application has a significantly reduced equivalent grid angle deformation compared with the existing similar schemes, has good geometric properties, has a higher fitting degree to the earth, can effectively improve the expression accuracy of geographic spatial data and reduce data redundancy, and is suitable for statistical analysis and calculation.