80 results about "Slice method" patented technology

The invention discloses a slope stability analysis slice method based on global optimization and belongs to the field of slope stability analysis. The method includes that a slope slip mass is divided into vertical strip blocks or inclined strip blocks, acting force (including normal force and shearing force) on the bottom faces of the strip blocks and acting force (including normal force and shearing force) between the strip blocks are utilized as unknown variables, stable safety coefficient of the slope is utilized as a target function, and a balance equation of the strip blocks, the yield condition of the bottom slip face of the strips blocks, the yield condition of contact face between the strip blocks and other constraint conditions are combined to build a nonlinear mathematical planning model for slope stability analysis, and an optimization algorithm is utilized to solve the global optimum maximum stable safety coefficient. By means of the method, the performance that the slope safety coefficient has a floor solution can be achieved. The method has the advantages of being clear in conception, high in calculation accuracy and the like and can be applied to stability analysis of soil slopes or rock slopes.

The invention discloses a slide face boundary method for calculating the slope stability. In the slide face boundary method, only a slider is taken as a calculated object for slope stability analysis. The invention further discloses a comprehensive glide force-antislide force stability coefficient calculation method and a main glide force method based on the slide face boundary method. The method disclosed by the invention has the advantages that the non-convergence problem of an existing slope stability calculation method is solved, the slope step-by-step stability failure analysis, realizes easy calculation can be implemented, the calculation results with a conventional limited equilibrium slice method can be compared, and new stability coefficients have different physical significances, so that the current slope monitoring results can be applied to the slope stability evaluation.

The invention discloses a method for analyzing pore characterization of a tight sandstone reservoir based on Matlab, and the method is as follows: firstly reading a cast thin slice image and an SEM image of the tight sandstone reservoir; then adjusting an image threshold, and performing binarization processing on the cast thin slice image and the SEM image to obtain a binary image; calculating porosity by identifying black pixel points of the binary image; and obtaining pore radius distribution of the tight sandstone reservoir; finally, the obtaining the pore average diameter and the varianceof the tight sandstone reservoir, and the outputting the obtained binary image and obtained data. Researches on the pore characterization of the tight sandstone reservoir by use of the software Matlabare mainly divided into two methods. One method uses a built-in function to quantitatively analyze the binary image, and is suitable for nano-scale pores and micro-scale pores. The other method useslinecut or a slice method to directly analyze the cast thin piece and SEM image and the like, and is suitable for nano-scale pores.

The invention belongs to the field of computer network information technology analysis, and discloses a prediction method of hot topics participated by users in social networks. Based on online users and user friend relation networks, by taking features of three-side relations among personal interests of fans, concerned users and communities into consideration, through time discretization and time slice methods, the influence of a timeliness factor of topic information is added, at the same time, for the purpose of solving the problems of data distribution nonuniformity and network structure sparsity at each phase of life cycles of the hot topics, a hot topic participation prediction model is constructed and the model is fitted, and power factors of the fans in participating in discussion of the topics can be analyzed simply by inputting the data, such that whether the fans of users already participating in the topics participate in the discussion of the topics can be dynamically predicted, and the power factors of participation in the discussion of the topics and the heat trend of the topics can be mined.

The invention discloses a networking method for an ultra-wideband wireless communication indoor positioning system. A time slice period is initiated by a networking base station module: a scheduling of the time slice period, the time increases from left to right, 16 base station broadcast time slices are reserved, zero base station broadcast time slice-15th base station broadcast time slice, respectively; one network service time slice and 10 tag ranging time slices are number zero tag ranging time slice-number nine tag ranging time slice, respectively; and one data communication time slice. In the method in the invention, the time slice method is adopted to realize time-sharing operation of different functions, thereby greatly reducing the communication conflict problem of multiple modules in an Ultra-Wideband (UWB) local area network; all the modules in the application scenario are connected into the unified UWB local area network, interconnection and mutual understanding are achieved between the modules in the network, and interfaces such as WiFi and Ethernet are provided to the outside, thereby realizing a remote management function of the UWB local area network.

This invention relates to microscope slice method, which comprises the following steps: using total image with low resolution as virtual slice background image and establishing coordinates and background image on special part with high resolution with large times; then compressing it into virtual slice through network to user for decompressing virtual slice for displaying background image; then displaying image special part through coordinates. The virtual microscope slice system comprises the image catch device, virtual slice terminal, application terminal, virtual slice terminal.

A back-drilling method of through vias in a circuit board is disclosed. The back-drilling method comprises the steps of: using a drill machine for measuring a localized thickness of the circuit board at a location having a target through via; determining a back drill depth at the location to be back-drilled according to the measured localized thickness and a predetermined percentage; and back-drilling the target through via to the determined depth, thereby forming a back-drilled via extending to a preselected target layer, wherein the percentage is verified by a cross-sectional slice mode, and the slice method comprises the steps of: selecting slices at a plurality of locations to be backdrilled; measuring total thickness of the circuit board at the plurality of locations and layer depths of the target layer at the plurality of locations; and obtaining the percentage based on layer depth of the target layer and the total thickness of the circuit board at the plurality of locations.

The invention discloses a loess high slope stability analysis method suitable for the rainfall condition. According to the loess high slope stability analysis method, based on the Sweden slice method, the situation that a sliding surface passes a back edge fracture end point and the position of 1/3 h of a slope surface is assumed, and meanwhile, the influence of rainfall weight increment and loess water content change on the loess slope stability is considered. The loess high slope stability analysis method comprises the basic steps that 1, the loess c (w) and phi values are measured; 2, the depth of a back edge fracture is calculated; 3, the circle center range of an arc failure surface is determined; 4, circle centers and loess bodies separated in a striped mode are selected; 5, the rainfall weight increment coefficient Ki is calculated; 6, the safety coefficient is calculated; 7, the different circle centers are selected by returning to the step 4 till the minimum safety coefficient is calculated; and 8, the water content value is changed, the step 4 is returned, and the minimum safety coefficients under different water contents are calculated. The loess high slope stability analysis method suitable for the rainfall condition is simple and practical, the related calculating parameters are clear in significance and easy to acquire, the problem of the stability estimation of a loess high slope can be effectively solved, and accordingly corresponding geological disaster hidden dangers are eliminated.

The invention discloses a virtual slice method for a teaching video. The method comprises the following steps of firstly, extracting audio data from a teaching video, and combining sentence texts obtained through conversion of the audio data to obtain a first text set; determining the start time, the end time and the content information of each sentence text, and merging the sentence texts in thefirst text set in order to obtain an initial video slice set; obtaining key words of each slice in the initial video slice set; and computing the similarity of two adjacent slices according to the keywords, and finally determining whether the two adjacent slices need to be merged or not according to the similarity of the two adjacent slices, the time interval between the two adjacent slices, the respective time lengths of the two adjacent slices and the total number of the respective sentence texts of the two adjacent slices in order to obtain a final video slice set. According to the method,a teaching video slice list based on semantic similarity can be provided for a user, and the user can directly access specific knowledge point positions in the video according to the keywords.

The invention discloses a client HTTP retrieval full-index container format media resource time slice method, comprising the steps of: analyzing media slice URI, obtaining a primary resource URI and a time interval of the slice; judging whether the slice is in a local HTTP cache; judging whether a service end updates the primary resource of the slice; obtaining a slice resource file from the local HTTP cache, to finish the process; requesting and obtaining a head information of the primary resource from the service end; mapping the time interval of the slice as a primary resource byte range; requesting and obtaining the byte range for the server end; modifying the header information, and synthesizing into the slice resource file with the byte range. The present invention discloses a client HTTP retrieval full-index container format media resource time slice method, can support a W3C media slice URI 1.0 standard, and the client completes the mapping of the time slice URI to the media resource byte scope and obtains the byte range from the traditional server end to generate the section slice file, thus greatly saving communication bandwidth and shorter communication delay.

The invention relates to a sliced method of a polycrystalline silicon solar cell and belongs to the technical field of polycrystalline sliced technology. The sliced method of the polycrystalline silicon solar cell comprises the steps of first transversely cutting a silicon ingot, and then vertically cutting the silicon ingot. A silicon wafer crystalline grain which is obtained by using the method is of long striped shape. The whole crystalline grain is large in size and capable of effectively reducing compositing of manufactured cells. The minority carrier lifetime is more than 20us (The minority carrier lifetime of a common polycrystalline silicon solar silicon wafer is less than 10us). Average transfer efficiency of the solar cell reaches more than 17.50%. When slicing is conducted by using the method, a fixture does not need to be adjusted. When the fixture is placed, the phenomenon of breaking a silicon wafer cannot occur. A great number of unnecessary operations are avoided, possible negative effects made by the unnecessary operations on a silicon rod in the process of cutting are eradicated, operating steps of operators are reduced, and working efficiency of slicing is not affected.

The invention discloses a method for quantitatively representing a coal three-dimensional open-closed hole structure, which reasonably combines a sequence slice method and high-resolution scanning electron microscope method and combines an IPP image analysis method and an MATLAB to obtain a quantified coal sample three-dimensional pore structure so as to actually reflect a length, a shape, an equivalent aperture, a specific area, a specific capacity, a number of opened and closed pores and porosity of opened-closed pores of pores of a coal sample. The method comprises the following steps: step I: extracting raw coal, preparing a coal sample, and adhering the prepared coal sample by utilizing collodion; step II: drying, and performing sequence slicing for the coal sample by utilizing a cutting machine; step III: obtaining a two-dimensional picture of the coal sample by combining a sequence slice combination method and a high-resolution scanning electron microscope method; step IV: quantitatively scanning the obtained slicing scanned picture by utilizing image analysis software and a binary method, and outputting an excel file; and step V: performing MATLAB processing, and obtaining various coal sample pore structure parameters.

The invention relates to the field of side slope engineering stability evaluation and landslide hazard prediction and prevention, in particular to a downslide thrust evaluation method for variable width slicing of a side slope, and mainly solves the problems that the conventional circular slice method and the residual downslide thrust method have difficulty in meeting the accuracy requirement, and misjudgment occurs easily. The downslide thrust evaluation method comprises the following steps: firstly, comprehensively determining a major slipping longitudinal profile map of a side slope body through exploration and determination of an underlying slipping surface, and according to changes of the inclination theta of the underlying slipping surface, determining the extreme point and the inflection point of the inclination changing curve, so as to obtain sliced regions of the underlying slipping surface of the side slope body by division; performing uniform angular slicing on the sliced regions and determining the slicing width of soil stripes of the overall side slope body, the residual downslide thrust direction and the positions of action points. The downslide thrust evaluation method for variable width slicing of the side slope, provided by the invention, effectively solves the problems of precise calculation and stability evaluation of the residual downslide thrust of a side slope when the underlying bedrock surface is a continuous slowly-varying arc-shaped slipping surface, thereby being extremely high in practicability and effectiveness.

The invention discloses a relocation method of an ocean bottom seismometer based on a time slice method. The method includes following steps: 1) picking a direct wave travel-time of each shot point, and extracting a horizontal coordinate value of each shot point; 2) extracting a horizontal coordinate of each shot point aiming at a certain time slice, and performing circle fitting by employing the least squares method; 3) solving the center of circle, wherein the center of circle refers to the horizontal coordinate, inverted by the time slice, of the ocean bottom seismometer; 4) selecting other time slices, and inverting a series of horizontal coordinates of the ocean bottom seismometer according to the steps 2) and 3); 5) averaging the series of inverted horizontal coordinates of the ocean bottom seismometer, wherein the average coordinate refers to the finally inverted horizontal position of the ocean bottom seismometer; and 6) after inversion of the horizontal position of the ocean bottom seismometer, inverting the depth of the ocean bottom seismometer in the seawater and the propagation speed of seismic waves in the seawater by employing the idea of scanning. Compared with a five-point location method, the method is more accurate.

The invention relates to a preparation method of paraffin slices of eggplant root stalk part tissues, and belongs to the technical field of biological histology. The method comprises the eleven steps of fixing, softening, dewatering, transparency treatment, wax soaking, coating and burying, wax trimming and slicing, slice unfolding and slice baking, wax removal, rehydration, dyeing, slice sealing and observation. The method belongs to a fast, convenient, safe and practical eggplant root stalk part tissue paraffin slice method. The result obtained by the method realizes high operability, high repeatability, high stability and high reliability. Through the microscopic observation, the slice quality is high; the effect is good; the tissue structure is clear. The method can be used for studying, observing and judging the form structure change of the eggplant root stalk part tissues, so that the physiological, pathological and morphological study can be performed on the eggplants. The method can also be widely applied to tissue slice experiments of eggplant fruits or even other plants; good scientific research application prospects are realized.

The invention relates to a process for making three-dimensional physical compensation apparatus belonging to the field of radiation therapy, and suitable for the intensity modulation technique of X-ray (linear accelerator), gamma-ray and electronic rays. By applying a cross sectioning technique, the invention realizes the transformation from complex three-dimensional dosage model into a plurality of 2-D plane models that can be made, then the multiple two-dimensional models are superposed. The system can be applied to various linear accelerators with easiness in operation.

The present invention discloses a side slope dynamic stability assessing method based on a Swedish slice method and a simplified strain softening theory, and belongs to the technical field of geological engineering. The method comprises: dividing a side slope vertical bar into n soil blocks; using a strain of the soil block as a parameter; according to a simplified relationship between the strain and a stress, determining a value of the stress of the soil block; and based on the Swedish slice method, calculating stability of a side slope. According to the method provided by the present invention, a dynamic progressive breakage process of the side slope is considered, and according to the change of the strain of the soil block in the breakage process, information about a change in a safety factor in the breakage process of the side slope is determined. The method is simple in principle, convenient for calculation and applicable to dynamic stability analysis of a stain softening side slope.

The invention relates to the technical field of computer science, and discloses a method for reconstructing a three-dimensional tree model based on airborne laser radar tree point cloud, which comprises the following steps: S1, projecting airborne laser radar tree point cloud to a plane to form a height map; S2, performing interactive separation by adopting a slicing method to obtain point cloudsof a single tree; S3, constructing a connected graph based on the point cloud of the single tree; S4, constructing a direction field of the tree point cloud based on botanical rules; s5, generating atree skeleton based on a greedy algorithm; and S6, reconstructing a three-dimensional geometric model of the tree based on the pipeline model and the generalized cylinder. The method for reconstructing the three-dimensional tree model realizes effective reconstruction of the sparse tree point cloud, and the reconstructed tree model can well reserve detail features of the original point cloud.

Method and apparatuses are provided to enable bi-directional prediction (or bi-prediction) within P slices. A bi-predicted P slice is introduced herein as a new slice type in addition to existing I, P and B slices. A benefit of the new bi-predicted P slice is that it enables a video encoder to support temporal scalability without the need to use B pictures. Bi-predicted P slices enable the definition of a hierarchical GOP structure, which is a common method to allow temporal scalability in a video encoder. Another advantage of bi-predicted P slices is that it can improve coding efficiency over uni-directional P slices for some particular video content frames.

A WDM optical source, in adopting a spectrum-sliced method, advantageously needs neither an optical source with specific generation wavelength nor a wavelength-stabilizing circuit for stabilizing wavelength. Affording high power and a very narrow line width, the WDM optical source can provide a broadcasting service without signal distortion by a chromatic dispersion effect and also avoids the expense of an amplifier and/or external modulator, thereby relieving subscribers of the economical burden. The practical use of WDM-PON and of WDM-PON using an inventive WDM optical source can therefore be brought to fruition and broadcasting service can be provided economically.

The invention discloses a method for staining the iron element in plants. The method comprises steps of: cutting a plant material into small pieces; soaking the small pieces into a Perls staining fluid to be stained; rinsing the stained small plant material pieces with deionized water; putting the rinsed small plant material pieces into a chloral hydrate test solution until the small plant material pieces are completely transparent; and taking out the small plant material pieces so as to obtain the materials with stained iron element. According to the method, a Prussian blue Perls iron staining method and a chloral hydrate transparency method are organically combined together, the internal iron distribution of the plant can be integrally displayed under the condition of keeping the plant material complete to the greatest extent; the method has a short period, and a result is generally obtained after a week through adopting a slice method, but can be obtained in a day through utilizing the method; and the method has the advantages of simplicity in operation and no adoption of expensive equipment.