Abstract: A comprehensive geological-engineering classification evaluation method for low-permeability reservoirs, includes: constructing geological classification evaluation indexes of a reservoir: adopting gray correlation method to obtain main controlling factors of reservoir geology of the low-permeability reservoirs that affects fracturing effects; based on the main controlling factors of the reservoir geology, constructing the geological classification evaluation indexes of low-permeability reservoirs by principal component analysis; constructing engineering classification evaluation indexes of the reservoir: adopting gray correlation method to obtain main controlling factors of geomechanics of the low-permeability reservoirs that affects fracturing effects; based on the main controlling factors of geomechanics, constructing the engineering classification evaluation indexes of low-permeability reservoirs by an analytic hierarchy process; and according to classification limit values of the geological classificatio

Abstract: A method for rendering hair is provided and includes: obtaining a first rendered result by performing transparent channel test rendering on a specified pixel point in a hair model, wherein the specified pixel point is a pixel point with a pixel depth value less than a preset depth threshold and a transparency channel value greater than a preset transparency threshold; obtaining a second rendered result by performing transparent channel hybrid rendering on a backlight pixel point of the hair model based on the first rendered result; obtaining a third rendered result by performing transparent channel hybrid rendering on a light-oriented pixel point of the hair model based on the second rendered result; obtaining a final rendered result of the hair model by hybridizing the first rendered result, the second rendered result and the third rendered result.

Abstract: A phase change memory device based on a nano current channel is provided. A nano current channel layer structure is adopted and configured to limit the current channel. As such, when flowing through the layer, the current enters the phase change layer from nano crystal grains with high electrical conductivity, and the current is thereby confined in the nano current channels. By using the nano-scale conductive channels, the contact area between the phase change layer and the electrode layer is significantly decreased, the current density at local contact channel is significantly increased, and heat generation efficiency of the current in the phase change layer is improved. Moreover, an electrically insulating and heat-insulating material with low electrical conductivity and low thermal conductivity prevents heat in the phase change layer from being dissipated to the electrode layer, and Joule heat utilization efficiency of the phase change layer is thereby improved.

Abstract: A phase change memory device based on a nano current channel is provided. A nano current channel layer structure is adopted and configured to limit the current channel. As such, when flowing through the layer, the current enters the phase change layer from nano crystal grains with high electrical conductivity, and the current is thereby confined in the nano current channels. By using the nano-scale conductive channels, the contact area between the phase change layer and the electrode layer is significantly decreased, the current density at local contact channel is significantly increased, and heat generation efficiency of the current in the phase change layer is improved. Moreover, an electrically insulating and heat-insulating material with low electrical conductivity and low thermal conductivity prevents heat in the phase change layer from being dissipated to the electrode layer, and Joule heat utilization efficiency of the phase change layer is thereby improved.

Abstract: A foldable terminal apparatus, a terminal control method, a terminal apparatus, and a non-transitory computer-readable storage medium are provided. The foldable terminal apparatus comprises a terminal body and a bendable touch screen. The bendable touch screen in a bending direction has a fixed end connected to the terminal body and a free end, and the bendable touch screen is switched between a first state and a second state. In the first state, the bendable touch screen surrounds the terminal body on an outer side of the terminal body, and in the second state, the fixed end of the bendable touch screen is located on the terminal body and the free end is located outside the terminal body, such that the bendable touch screen is expanded.

Abstract: Disclosed is an in-situ stress evaluation method based on a wellbore mechanical instability collapse, including: selecting a mechanical instability collapse wellbore section and classifying a data, obtaining a deep in-situ stress according to a structural strain coefficient, establishing a structural strain coefficient equation based on a wellbore stress critical equilibrium condition, obtaining the structural strain coefficient by using a least squares method and obtaining a horizontal principal stress, and estimating a reasonableness of the deep in-situ stress. The method selects data of the wellbore mechanical instability collapse and classify the data to establish a stress critical equilibrium equation based on a strain coefficient and solve an overdetermined equation based on a critical collapse formation information restriction, so as to obtain a maximum horizontal principal stress and a minimum horizontal principal stress.

Abstract: Embodiments of the present disclosure provide an image processing method, apparatus, and device. The method includes: obtaining a scene image in a scene to be displayed; obtaining a three-channel color value and a metallicity coefficient of each pixel point in the scene image; and performing diffuse reflection processing on the scene image according to the three-channel color value and the metallicity coefficient of each pixel point. The method in the embodiments of the present disclosure improves the authenticity of the scene to be displayed, which is more realistic and natural.

Abstract: A method for testing and extracting paleo-tectonic geostress based on rock core, including: selecting rock cores in different tectonic periods; preparing standard cylindrical samples from the rock cores in a specific orientation; subjecting the samples to an acoustic emission test to test paleo-stresses of multiple tectonic periods and obtain paleo-tectonic stress data sequence; based on a correlation analysis and an Euclidean distance of the stress data sequence, stripping and extracting multi-level Kaiser stress points of the acoustic emission of rock cores from different formations, so as to calculate and evaluate the ground stress of an evaluated formation in an evaluated paleo-tectonic period.

Abstract: A system for three dimensional (3D) model texturing. The system includes a computing device configured to: instruct a camera to capture images of an object; construct a 3D model of the object based on the images; texture the 3D model using keyframes of the images to obtain a textured 3D model; generate guidance images by projecting the textured 3D model to camera poses of the keyframes; for each guidance image and keyframe pair: modify the guidance image and the keyframe based on their correspondence to obtain enhanced guidance image and warped image, combine the enhanced guidance image and the warped image to obtain harmonized image, and project color from the harmonized images to the 3D model to obtain textured 3D model.

Abstract: Disclosed are an augmented reality-based coloring method and apparatus, an electronic device and a storage medium. The method comprises: acquiring three-dimensional mesh information of a human face, and acquiring position coordinates and texture coordinates of respective vertices of a target portion of the human face based on the three-dimensional mesh information of the human face; constructing a three-dimensional mesh of the target portion according to the position coordinates of respective vertices of the target portion, and determining a normal line of each vertex in the three-dimensional mesh; and coloring the target portion based on the position coordinates, the texture coordinates and a normal line of each vertex in the three-dimensional mesh, a preset shading map of the target portion, and a target RGB value of the target portion, thereby improving the stereoscopic impression and the sense of reality of coloring, and improving the user experience.

Abstract: A comprehensive geological-engineering classification evaluation method for low-permeability reservoirs, includes: constructing geological classification evaluation indexes of a reservoir: adopting gray correlation method to obtain main controlling factors of reservoir geology of the low-permeability reservoirs that affects fracturing effects; based on the main controlling factors of the reservoir geology, constructing the geological classification evaluation indexes of low-permeability reservoirs by principal component analysis; constructing engineering classification evaluation indexes of the reservoir: adopting gray correlation method to obtain main controlling factors of geomechanics of the low-permeability reservoirs that affects fracturing effects; based on the main controlling factors of geomechanics, constructing the engineering classification evaluation indexes of low-permeability reservoirs by an analytic hierarchy process; and according to classification limit values of the geological classificatio

Abstract: The present disclosure provides a fine identification method of a tight reservoir fracture based on conventional logging data. The method includes: eliminating a logging interference factor from a non-fracture response, choosing a basic lithological background for fracture identification, analyzing logging response features on different fracture scales, analyzing fracture aperture and filling features on a scale that can be identified by conventional logging data, identifying occurrence of an open fracture, and identifying a development degree of a fracture through a relative amplitude difference between a deep resistivity and a bedrock resistivity. The method of the present disclosure is suited for fine evaluation of a tight reservoir fracture.

Abstract: A foldable terminal apparatus, a terminal control method, a terminal apparatus, and a non-transitory computer-readable storage medium are provided. The foldable terminal apparatus comprises a terminal body and a bendable touch screen. The bendable touch screen in a bending direction has a fixed end connected to the terminal body and a free end, and the bendable touch screen is switched between a first state and a second state. In the first state, the bendable touch screen surrounds the terminal body on an outer side of the terminal body, and in the second state, the fixed end of the bendable touch screen is located on the terminal body and the free end is located outside the terminal body, such that the bendable touch screen is expanded.

Abstract: Disclosed are an augmented reality-based coloring method and apparatus, an electronic device and a storage medium. The method comprises: acquiring three-dimensional mesh information of a human face, and acquiring position coordinates and texture coordinates of respective vertices of a target portion of the human face based on the three-dimensional mesh information of the human face; constructing a three-dimensional mesh of the target portion according to the position coordinates of respective vertices of the target portion, and determining a normal line of each vertex in the three-dimensional mesh; and coloring the target portion based on the position coordinates, the texture coordinates and a normal line of each vertex in the three-dimensional mesh, a preset shading map of the target portion, and a target RGB value of the target portion, thereby improving the stereoscopic impression and the sense of reality of coloring, and improving the user experience.

Abstract: Embodiments of the present disclosure provide an image processing method, apparatus, and device. The method includes: obtaining a scene image in a scene to be displayed; obtaining a three-channel color value and a metallicity coefficient of each pixel point in the scene image; and performing diffuse reflection processing on the scene image according to the three-channel color value and the metallicity coefficient of each pixel point. The method in the embodiments of the present disclosure improves the authenticity of the scene to be displayed, which is more realistic and natural.

Abstract: The present disclosure provides a checking method of a system start-up file. The method includes: acquiring the system start-up file and a mapping table from a system firmware partition; reading first check data and addressing data associated therewith from the mapping table; reading segmentation data corresponding to the first check data from the system start-up file according to the addressing data; determining whether the first check data is a first type or a second type; if it is the first type, determining whether the segmentation data is a repeated permutation of the first check data, and if not, a security error exists in the system start-up file; and if it is the second type, determining whether second check data, obtained by calculating the segmentation data according to a check algorithm, is consistent with the first check data, and if inconsistent, a security error exists in the system start-up file.

Abstract: The present invention discloses the application of aptamer in recognition and binding of alkaline phosphatase heterodimer. The present invention provides an aptamer or its derivative, the nucleotide sequence of which is shown in SEQ ID NO: 1 in the sequence listing. The present invention also provides a kit including an aptamer or a derivative thereof, and a carrier for fixing or coupling the aptamer or a derivative thereof, wherein the aptamer is a single-stranded DNA molecule having the nucleotide sequence as shown in SEQ ID NO: 1. The method for capturing and detecting circulating tumor cells, exosomes and free alkaline phosphatase in peripheral blood highly expressing alkaline phosphatase based on the aptamer magnetic nanoparticle technology of the present invention can achieve highly selective capture and detection of target cells, exosomes or free proteins.

Abstract: The present disclosure provides a checking method of a system start-up file. The method includes: acquiring the system start-up file and a mapping table from a system firmware partition; reading first check data and addressing data associated therewith from the mapping table; reading segmentation data corresponding to the first check data from the system start-up file according to the addressing data; determining whether the first check data is a first type or a second type; if it is the first type, determining whether the segmentation data is a repeated permutation of the first check data, and if not, a security error exists in the system start-up file; and if it is the second type, determining whether second check data, obtained by calculating the segmentation data according to a check algorithm, is consistent with the first check data, and if inconsistent, a security error exists in the system start-up file.

Abstract: A method for color correction of a pair of colorful stereo microscope images is provided, which transmits the color information of the foreground areas and the background area of the reference image to the aberrated image separately for avoiding transmission error of the color information of the varied areas of the pair of the images, thus sufficiently improves the accuracy of the color correction, reduces the difference between the color of the reference image and the color of the aberrated image, and well prepares for the stereo matching of the pair of colorful stereo microscope images as well as for the three-dimensional reconstruction and three-dimensional measurement; on the other hand, during the correction, the correcting procedure is provided automatically without manual work.

Abstract: A method for color correction of a pair of colorful stereo microscope images is provided, which transmits the color information of the foreground areas and the background area of the reference image to the aberrated image separately for avoiding transmission error of the color information of the varied areas of the pair of the images, thus sufficiently improves the accuracy of the color correction, reduces the difference between the color of the reference image and the color of the aberrated image, and well prepares for the stereo matching of the pair of colorful stereo microscope images as well as for the three-dimensional reconstruction and three-dimensional measurement; on the other hand, during the correction, the correcting procedure is provided automatically without manual work.