32 results about "Diffusion matrix" patented technology

Disclosed is a sound-suppressing device that employs a porous micro-channel diffusion matrix surrounding a hollow core tube that acts to exponentially increase the surface area of the suppressor and allow combustion gasses to diffuse and exit the suppressor across the entire outer surface of the suppressor.

The invention provides an SAR image super-resolution method based on marginal information and deconvolution. The method achieves the aim that a low-resolution SAR image is reconstructed to be a high-resolution SAR image, and comprises the steps that the low-resolution SAR image is generated to be a result image on which super resolution is to be conducted; original SAR image pixel dot interlace evaluation is conducted; for each image pixel which is not evaluated, four image pixels are used for estimating the gray level distance, and calculating a standard deviation at the same time; the obtained gray level distance and the standard deviation are used for conducting estimation filling on the pixels which are not evaluated; the result image anticlockwise rotates by 45 degrees, and in the same way, the gray level distance is estimated, the standard deviation is calculated, and estimation filling is conducted on the pixels; then the result image anticlockwise rotates by 45 degrees, Gaussian point diffusion matrix deconvolution is conduced on the result image, and the super-resolution result image is obtained after Fourier transform is conducted on the image. According to the SAR image super-resolution method based on marginal information and deconvolution, marginal maximum a posteriori estimation is achieved, the integrality of the image content structure is ensured, fast Fourier transform deconvolution processing is adopted, and the blur caused by marginal interpolation is lowered.

The present invention relates to a test response compressor in design of chip testability, and provides a single-output sequential comprssion circuit: quotient-compressor. Said compression circuit includes two portions: (1) response diffusion network and (2). quotient-shifting register chain. Said invention also provides three rules must be met for designing diffusion matrix correspondent to the response diffusion network, and its compression rate is high, and its testing time can be reduced, and it has no erroneous judgement.

The invention discloses a construction method for an ion diffusion model of cement based composite material. According to a cement based composite material microcosmic / meso-structure discretized into a series of equally-sized cube three-dimensional space grids, each pair of adjacent cube three-dimensional space grids with ion diffusion capability therebetween is used as one lattice diffusion unit, all the lattice diffusion units together construct a three-dimensional lattice ion transport network, and each grid is used as one diffusion node. The invention also discloses an acquiring method for an ion diffusion coefficient of the cement based composite material. Diffusion matrix equations of every two diffusion nodes in the three-dimensional lattice ion transport network are combined with ion concentration boundary conditions to build ion diffusion matrix equations, the diffusion matrix equations are solved to obtain an ion concentration distribution under steady state, and the ion diffusion coefficient is finally obtained. The construction method for the ion diffusion model of the cement based composite material is broad in application range and simple in algorithm and has important significance to the ion diffusion research of cement based material.