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68results about How to "Avoid refactoring" patented technology

Light-weight file encryption and decrypting and recovering method in NTFS file system

A light-weight file encryption and decrypting and recovering method in an NTFS file system belongs to the technical field of information security. The method comprises the following steps: selecting a proper data block replacement method to overwrite data following the attribute of a file referred to by a legal file path according to encryption options selected by a user, and storing a seed generating a random data block replacement sequence; then generating a reverse replacement sequence according to the seed generating the random data block replacement sequence to overwrite the data of a file referred to by a legal file path, thus recovering raw data. The method helps achieve the purposes of encrypting light-weight files and preventing file reconstruction and data intrusion by optimally selecting random replacement file data blocks according to structural properties of the NTFS file system.
Owner:SHANGHAI JIAO TONG UNIV

Container cluster management method, device and system

The invention discloses a container cluster management method, device and system, and relates to the technical field of finance. The method comprises the following steps: receiving an application publishing request sent by a tool platform, wherein the application publishing request comprises a program file of an application to be published, an identifier of the application to be published, a target container cluster identifier corresponding to the application to be published and a server identifier in a target container cluster; converting the format of the application release request into a readable format of a target container cluster corresponding to the target container cluster identifier by adopting a first format conversion algorithm to obtain the application release request after format conversion; and sending the application publishing request after format conversion to a target container cluster corresponding to the target container cluster identifier, wherein the application publishing request is used for indicating the target container cluster to execute a publishing operation on the program file of the application to be published in the server corresponding to the server identifier. According to the method, reconstruction and reconstruction of a non-containerization system architecture are avoided, and the management cost of the container cluster is reduced.
Owner:WEBANK (CHINA)

Reconstruction method of terminal under environment of cognitive radio network

InactiveCN101754226AResolve contradictionsScientific sortNetwork planningFeature vectorAccess network
The invention discloses a reconstruction method of a terminal under the environment of a cognitive radio network and belongs to the communication technology field. The invention mainly solves the problem that the terminal is frequently reconstructed and can not effectively make a decision. The reconstruction method comprise the specific processes: firstly, acquiring various attribute data of the network for covering an area where the network terminal is positioned; secondly, determining the weights of all attributes of an access network by applying an eigenvector method; thirdly, constructing a weighted and specified decision array according to the various attributes of reconfiguration schemes; fourthly, listing an ideal solution and a negative-ideal solution; fifthly, calculating a virtual worst solution; sixthly, calculating distances from each reconstruction scheme to the ideal solution and from the reconstruction scheme to the negative-ideal solution; seventhly, calculating comprehensive evaluation indexes of each reconstruction scheme; and eighthly, arranging good and bad sequences of each reconstruction scheme and selecting the optimal scheme access network. The invention not only can effectively determine the weights of various attributes in each reconstruction scheme and select the optimal scheme access network, but also can be used for the reconstruction of the terminal under environment of the cognitive radio network.
Owner:XIAN QIANGJUN INFORMATION TECH

Method of improving disk array data reconstruction efficiency

The invention provides a method of improving the disk array data reconstruction efficiency. The method is characterized in that a reconstruction process of treating a same stripe is carried out in two threads, as for one thread, disk reading operation is carried out only, as for the other thread, disk writing operation is carried out, and the amount of data blocks of a buffer queue is limited and is larger than that of stripe buffer so as to asynchronously write data without influencing the disk reading operation; the data of an original data disk is read and is checked, and the data obtained by checking is added into the buffer queue; and the other thread used for disk writing acquires the data from the buffer queue. With the adoption of the method, the position of writing the data per time needs to be marked and recorded and can be updated into super block information, thus preventing reconstruction starting anew after restart due to power off.
Owner:LANGCHAO ELECTRONIC INFORMATION IND CO LTD

Excitation system negative damping detection method based on oscillation energy injection

The invention discloses an excitation system negative damping detection method based on oscillation energy injection and relates to the technical field of power system dynamic stability. The method includes calculating the excitation system oscillation energy injection through a formula of Wex=integral (t2, t1) delta mu f (t) delta i f (t) d t; only extracting the oscillation component of the concerned oscillation frequency through an identification algorithm for calculation; determining the negative and positive of the damping of the excitation system according to the positive and negative of the oscillation energy injection. The excitation system damping is detected through the directly measured generator excitation voltage mu f and excitation current i f for avoiding the reconstruction of generator internal variables, so that the calculation is simple; the generator internal parameters are not used for avoiding errors caused by inaccurate generator parameters, so that the calculation is accurate. The excitation voltage and the excitation current during oscillation can be extracted from a generator monitoring system database for being used for the analysis of excitation system damping characteristics; the method can also be programmed as a subroutine to be integrated into the generator monitoring system for application.
Owner:SICHUAN UNIV

Tenant resource invading-oriented cloud application resource dynamic scheduling method

The invention relates to a tenant resource invading-oriented cloud application resource dynamic scheduling method. The method comprises the following steps: binding tenant applications and componentswith a task manager so as to perceive the whole tenant and the local units; according to the technical scheme, reusing the cloud server task thread in the one-time request processing process while performing the concurrent control on the tenant request, so that the problem of interactive protocol reconstruction is avoided, the maximum concurrent scale of the tenant is adjusted to adapt to the performance fluctuation generated when the tenant load dynamically changes, and the problems of tenant isolation and resource occupation are solved.
Owner:DIGITAL CHINA INFORMATION SYST

Compressed domain video watermark embedding and extracting methods based on moving object

ActiveCN108521613AGood anti-heavy compression performanceFlexible embeddingDigital video signal modificationSelective content distributionMotion vectorObject label
The invention discloses a compressed domain video watermark embedding method based on a moving object. The compressed domain video watermark embedding method based on the moving object is characterized by comprising the steps of: performing scrambling encryption on binary watermark information to obtain encrypted binary watermark information, obtaining a moving object labelling graph of each frameof image of a video by using a video object tracking method based on a compressed domain, obtaining a corresponding moving object in each frame of image according to the moving object labelling graph, furthermore, obtaining a corresponding motion vector from the extracted moving object in each frame of image, obtaining module values of all motion vectors of the moving object in each frame of image by calculation, and furthermore, performing cycle watermark embedding operation on the motion vector corresponding to the module value, which is greater than or equal to a pre-set threshold value inall the module values, by using the obtained binary watermark information, so that a video embedded with the watermark is obtained. By means of the compressed domain video watermark embedding and extracting methods based on the moving object disclosed by the invention, the technical problem that the watermark can be damaged after the video with the watermark is re-coded in the existing video digital watermark embedding method based on the compressed domain can be solved.
Owner:SOUTH CENTRAL UNIVERSITY FOR NATIONALITIES

Reconstruction system and reconstruction method applied to time-triggered communication of avionics system

The invention discloses a reconstruction system and a reconstruction method applied to time-triggered communication of an avionics system. The reconstruction system is characterized in that an end system fault recording module, a resource checking module, a configuration generation module and a reconstruction execution module are additionally arranged in a traditional avionics system. The reconstruction method comprises the steps of selecting a reconstruction strategy after an end system fails, executing migration type reconstruction according to backup resources of a redundant end system, executing preemptive type reconstruction according to available idle resources, and executing degradation type reconstruction if resources are insufficient. According to the reconstruction method, on thebasis of application migration, association from applications to messages is established, and for different resource constraint conditions, the fault problem of application failure on an end system module is solved in a mode of designing message secondary scheduling. The reconstruction method is based on a satisfiability model theory scheduling method, and can recover faults of the support end system when the avionics system operates.
Owner:BEIHANG UNIV

Spectrum sensing method based on non-refactoring framework

The invention relates to a spectrum sensing method based on a non-refactoring framework and aims at solving the problems that the utilization ratio of a spectrum resource authorized by a wireless communication technology is low, a conventional compressed sensing spectrum sensing algorithm is complex, and spectrum sensing can not be carried out by directly utilizing a data matrix which is in compressed sampling under the non-refactoring framework. The spectrum sensing method comprises the steps of 1, determining normalized sparse-group psi; 2, according to the signal length N, determining the signal length M after compressing; 3, generating an M*N matrix G; 4, multiplying the M*N matrix G and psi<T> to obtain a measuring matrix phi; 5, obtaining a data vector y after compressed sampling; 6, setting a threshold value lambda according to a noise variance sigma<2> and a false alarm probability Pf; 7, determining that a main user signal exists in a channel according to that max(|y|) is larger than lambda; 8, obtaining the detection probability Pd of the signal and the like. The spectrum sensing method is applied to the spectrum sensing field of the non-refactoring frameworks.
Owner:HARBIN INST OF TECH

Method for verifying feasibility of inserting CRISPR-Cas9 system mediated target gene into candida utilis

The invention discloses a method for verifying the feasibility of inserting a CRISPR-Cas9 system mediated target gene into candida utilis. The method includes the following steps that S1, an expression vector of the candida utilis containing Cas9 segments is constructed; S2, tRNAGlu genes and downstream expression units of sgRNA are amplified, PCR link is overlapped and a restriction enzyme cutting site is introduced, and after connection, the amplified tRNAGlu genes and downstream expression units of the sgRNA are combined with the vector of the candida utilis to obtain sgRNA initial recombinant plasmid; S3, pre-insertion and target sequences are selected, a sticky tail end is added to the 5' end of a target and complementary sequence, and double chain segments are formed by annealing andthen connected with the initial recombinant plasmid after enzyme digestion to obtain sgRNA mature recombinant plasmid; S4, a recombinant donor segment containing a left homologous arm and a right homologous arm of a pre-insertion sequence is constructed; and S5, the sgRNA recombinant plasmid and the recombinant donor segment are used for transforming the candida utilis carrying Cas9. The feasibility of inserting the CRISPR-Cas9 system mediated target gene into the candida utilis is verified by identifying the expression of the donor segment.
Owner:GUANGDONG QIZHI BIOTECHNOLOGY CO LTD +2

Stable modified asphalt regenerant based on epoxy bio-oil and preparation method of stable modified asphalt regenerant

PendingCN112063189AImprove viscoelastic propertiesImprove low temperature and fatigue performanceBuilding insulationsProcess engineeringAsphalt
The invention discloses a stable modified asphalt regenerant based on epoxy bio-oil and a preparation method of the stable modified asphalt regenerant. The stable modified asphalt regenerant is mainlyprepared by oxidizing, heating, stirring and mixing 70-80 parts of bio-reclaimed oil, 10-15 parts of a hot melt polymer, 0.5-1 part of a stable cross-linking agent, 4-8 parts of a fusion promoter and5-10 parts of a ductility improver. The stable modified asphalt regenerant has the advantages of economy, environmental friendliness, good regeneration effect, capability of effectively ensuring stable performance of the regenerated asphalt mixture and the like.
Owner:江苏宝利路面材料技术有限公司 +1

Soft tissue deformation simulation method based on coupling of mesh-free Galerkin and mass spring

The invention relates to an object deformation real-time simulation graphic processing technique, particularly a soft tissue deformation simulation method based on coupling of mesh-free Galerkin and mass spring, which comprises the following steps: in the pretreatment process, establishing a linear viscoelasticity biomechanical model for soft tissues; in the deformation computation process, dynamically partitioning a mesh-free region and a mass spring region according to the load carried by the soft tissues, establishing a transitional unit of the connection region between the mesh-free region and mass spring region, and constructing a transitional unit approximation displacement function, thereby implementing self-adapting coupling of a mesh-free Galerkin method and a mass spring method;and in the after-treatment process, outputting the state of the mass or node of each time step in the deformation process onto a screen, carrying out illumination rendering, and finally displaying the real-time deformation process of the soft tissue organ under stressed conditions on the screen, thereby implementing visualization effect of dynamic deformation. By utilizing the advantage of high efficiency in the mass spring method and the advantages of high precision and no need of mesh reconstruction in the mesh-free Galerkin method, the invention overcomes the defect that the Galerkin method is not suitable for solving a large-scale problem, thereby effectively lowering the complexity of computation in the soft tissue deformation simulation and enhancing the operation efficiency.
Owner:NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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