34results about How to "Reduce the number of rounds" patented technology

The invention provides a block cipher encryption and decryption method belonging to the field of data encryption and decryption. The algorithm of the invention designs a symmetric encryption structure, especially the S-box design in the invention can configure S transformation required for encryption and S inverse transformation required for decryption without additional circuit resources, thereby being beneficial to the implementation of an encryption / decryption integrated hardware circuit and consuming fewer area resources compared with the AES (advanced encryption standard) encryption / decryption integrated circuit. The complicated S box structure of the algorithm can resist the traditional known attack methods. In case of a small number of encryption rounds (three rounds), a high encryption speed can be provided, and decryption can be carried out at the same speed by using the same encryption and decryption hardware. The algorithm is especially suitable for realizing an ASIC (application specific integrated circuit), and can realize an ASIC chip based on the encryption and decryption special-purpose algorithm. Besides, the invention can be also used for the design of IP cores on FPGA (field programmable gate array). Compared with the AES algorithm, the invention consumes fewer resources on FPGA and has higher speed.

The invention provides an image encryption method based on a Feistel network and dynamic DNA encoding. The method comprises the following steps: computing a Hash value of an original plaintext image by using a Keccak algorithm, and taking the Hash value as an initial value of a hyper-chaotic Chen system, generating a Hill encryption matrix by using a chaotic sequence generated by the hyper-chaoticChen system so as to replace pixels of an original image; realizing image pixel value diffusion by using the DNA encoding operation as a F function of the Feistel network, and a DNA sequence base asa key of the Feistel network; and performing further diffusion through ciphertext feedback. Through three turns of chaotic scrambling-DNA encoding-Feistel conversion-DNA decoding, the ciphertext randomness and attack resistance are stronger, the scrambling conversion of the image pixel location and the diffusion of the pixel value are realized, and the encryption turn is reduced due to repeated scrambling and DNA encoding and decoding. Through the image encryption method provided by the invention, the image can be effectively encrypted, the plaintext sensitivity is strong, the plaintext attack, the differential attack and the statistical attack can be effectively resisted

The invention discloses a design method and a production technology of a multi-layer heat preserving shell fabric. The design method is characterized in that a woven fabric on the surface layer is prepared by blending polyimide fiber and hollow polyester fiber with compact sirospun yarn; the shell fabric is high in strength, high in friction resistance and high in heat preserving performance; warpyarn of the woven fabric on the intermediate layer is cotton and hollow polyester fiber blended yarn; weft yarn is OUTLAS phase-changed fiber and coffee carbon polyester fiber blended yarn; a relatively long floating line of the weft yarn is positioned between the woven fabrics on the surface layer and the inner layer, so that the yarn is in a loose state and supports the woven fabrics on the surface layer and the inner layer, and as a result, a heat preserving layer is formed; the yarn in the intermediate layer is relatively thick, the twisting coefficient is small, and heat absorbing and preserving fibers are adopted, so that the heat preserving performance of the woven fabrics can be ensured. The inner layer is the cotton and hollow polyester fiber blended yarn, so that the heat preserving effect is good; the shell fabric is skin friendly, can absorb moisture and is breathable, so that the problem of discomfort caused by that a woven fabric with too high moisture regain absorbs moisture and adheres to the body can be avoided.

The invention discloses a method for screening protein aptamers by using a micro-fluidic chip. The method comprises steps that: a preset initial nucleic acid library is first incubated with a non-target protein, such that an optimized nucleic acid library is obtained; a target protein is incubated with microspheres, the target-protein-modified microspheres are positioned in a channel of a micro-fluidic chip; the optimized nucleic acid library is delivered into the channel of the micro-fluidic chip; the materials are processed through washing and eluting, such that an initial screened nucleic acid library is obtained; PCR amplification is carried out upon the initial screened nucleic acid library, the amplification products are separated through an affinity column, and the products are processed from denaturative melting and desalting, such that a primary nucleic acid library is obtained; the primary nucleic acid library is used for replacing the initial nucleic acid library, and the previous steps are repeated until a nucleic acid library containing target aptamers is obtained. The method provided by the invention has advantages of good versatility, short screening time, high screening efficiency, and good screening effect.

Embodiments of the invention disclose a graph data processing method and apparatus. The method comprises the steps of determining to-be-processed graph data, and dividing a graph corresponding to the graph data into a plurality of sub-graphs; and dispatching computing nodes in a MapReduce system, and performing multi-round MapReduce operations on the graph data to obtain a processing result of the graph data, wherein each Map computing node in the MapReduce operation is used for processing vertexes with a mutual connection relationship in one of the sub-graphs. According to the method and the apparatus provided by the embodiments of the invention, the graph data processing efficiency can be improved.

The embodiment of the invention provides a man-computer conversation method and device, an electronic device and a storage medium, and relates to the technical field of pattern recognition. The methodcomprises the following steps of receiving the request information of a user; identifying the intention of the user according to the request information; fusing the identified intention with the historical intention of the user stored in a database; and generating a corresponding user response according to the fused intention. According to the technical scheme provided by the embodiment of the invention, the current accurate intention of the user can be determined by combining the historical intention of the user, so that the accurate user response can be obtained through a small amount of sessions, and the session experience of the user is improved.

The invention discloses a lightweight hashed password digest generation method. The method comprises the following steps: 1) dividing an input message M into a plurality of 64-bit message blocks, setting a 96-bit state parameter S<j> and initializing the 96-bit state parameter S<j> into an all-zero 96-bit string; 2) sequentially processing the message blocks, transforming the message blocks m<j> onto a high-bit 64 bit of the S<j> in an XOR manner, and taking the S<j> being subjected to the XOR processing as the input of internal replacement IP, wherein j is more than or equal to 0 and less than or equal to i, the internal replacement IP adopts a 18-wheel Feistel structure, and the output of the internal replacement IP is updated S<j>; and 3) taking a high 16 bit of a state S<j> obtained after processing of the last m as the digest of the message M. The method is implemented in one clock cycle, and the operation efficiency of an embedded processor chip is increased.

The invention discloses a design method and production process of multifunctional bed sheet fabric. The multifunctional bed sheet has a three-layer structure. The inner layer of the bed sheet is madeof yarns woven by cool fibers; the surface of the bed sheet is made of yarns woven by ultra-hollow warm-keeping fibers, so that the two surfaces of the bed sheet have different touch feelings including a cooling feeling and a warm feeling; and a yarn laying layer is made of wefts in the intermediate layer, so that the bed sheet feels soft and thus the comfortable level of the bed sheet is enhanced. With connection crossing points, diamond patterns are formed on the two sides of the bed sheet.

The embodiment of the invention provides a data processing method and device and a device for data processing. The data processing method and device are used for comparing the size of ciphertext datax with the size of ciphertext data y in a system supporting ciphertext bit operation. The method comprises the steps: decomposing x and y into n ciphertext bits based on a ciphertext; inputting the n-bit ciphertext bit corresponding to x and the n-bit ciphertext bit corresponding to y into a comparison circuit for iterative computation; performing parallel computation on possible output values compared with ciphertext bits of each corresponding bit of x and y in the first round of iteration, and performing parallel computation in the next round of iteration by utilizing the possible output values until log (n) round of iteration computation is completed to obtain a comparison result of x and y, the possible output values and the comparison result being ciphertexts. According to the embodiment of the invention, the number of communication rounds required by ciphertext comparison operation can be reduced, and thus the ciphertext comparison efficiency can be improved.

The invention provides a distance-measuring distributing system and method, the system includes: message transmitting device which is on the service base station and used to transmit the first messages received by mobile station to the target base station, the first message contains efficient indication of distance-measuring; the distance-measuring distributing device, which is on target base station and used to distribute the distance-measuring chance according to efficient indication of distance-measuring. The method include: step S402, the service base station transmits the first message received by mobile station to target station, and the first message contains efficient indication of distance-measuring; and step S404, the target base station distributes the distance-measuring chance according to efficient indication of distance-measuring. The efficient indication of distance-measuring is taken by switching affirm messages, and the target base station can adopt different distance-measuring distributing method. When the mobile station has efficient distance-measuring parameter, the base station distributes the special-used distance-measuring chance, and can not conflict with other mobile stations, and reduce the bout number of measuring distance, and reduce the time delay of switch.

The invention discloses an interface protection method and device, electronic equipment and a storage medium, and the method and device are used for an initiator and a receiver, and the initiator comprises the steps: obtaining a preset triggering event, and initiating an authentication process according to the preset triggering event; acquiring encrypted data supported by an initiator, and generating a first parameter set according to the encrypted data; sending the first parameter set to a receiver, and recording a first timing parameter; obtaining a second parameter set sent by the receiver,and recording a second timing parameter; generating key data according to the second parameter set, and verifying the second parameter set according to the key data, the first timing parameter and the second timing parameter to obtain an initial verification result; and sending the verification initiating result to the receiver. By means of the interface protection method, the authentication process of interface protection can be simplified, authentication time consumption is reduced, authentication efficiency is improved, and higher fault tolerance is achieved.

The invention discloses a service-based consultation method in mobile ad-hoc networks, comprising the following steps that: a consultation is started, and a buyer sends an offer signal to a seller; the buyer and the seller consult a quotation, which comprises the mutually sent offer signal and a waiting signal sent by the seller; at this time, if the seller sends a quit signal, the consultation is failed and is finished; if the seller sends an accept signal, the consultation is successful and is finished; if only one buyer is remained, and a) the seller can not receive an offer of the buyer, the seller sends a last offer query signal: if the buyer can accept, the offer signal is returned; if the seller sends the accept signal, the consultation is successful and is finished, or if the seller sends the quit signal, the consultation is failed and is finished; and if the buyer can not accept and sends a refuse signal, the consultation is failed and is finished; and if only one buyer is remained, and b) the buyer sends the refuse or quit signal, the consultation is failed and is finished. The service-based consultation method provided by the invention is advantaged in that: the network flow and the node energy consumption are reduced; and the consultation efficiency is improved.

The invention relates to the field of plant molecular biology, in particular to an EjAG gene determined by stamen and pistil characteristics of loquat, protein encoded by the EjAG gene and application. The whole length of the cDNA (complementary deoxyribonucleic acid) sequence of the EjAG gene is shown in SEQ ID No.1; the amino acid sequence of the protein encoded by the EjAG gene is shown in SEQID No.2. The EjAG gene is only expressed in the stamen and pistil of the loquat, but not expressed in the leaves, sepal and petals. An expression carrier pBI121-EjAg is guided into an arabidopsis ag-1mutant by an agrobacterium-mediated bud infection method; when the transgenic arabidopsis ag-1 mutant flowers, the number of petals and the number of rings are reduced, and the stamen and pistil arerestored. The EjAG gene has the advantages that the theoretical foundation is laid for the modification of plant flower organs by the EjAG gene of the loquat, and the technical scheme for the modification of plant flower organs by the EjAG gene of the loquat is provided; the EjAG gene of the loquat is over-expressed in the arabidopsis ag-1 mutant, so that the phenotype of double flower is restoredinto the normal phenotype; the application prospect is good.

The invention provides a forward error correction for Bundles of a spatial DTN network based on LDPC coding and decoding. Through carrying out research and analysis on end-to-end transmission in the conventional aerospace network environment, an LDPC code and a BP protocol in the DTN communication network are combined, the excellent coding and decoding performance of the LDPC code is applied to the DTN network, and according to a retransmission content, a retransmission mechanism is divided as follows: a receiving end carries out feedback and retransmission on all lost data packets including an original packet and extra packets; and the receiving end only carries out feedback and retransmission on the original packet with the failed iterative decoding recovery. Through adoption of two retransmission modes, the round number of the whole transmission is greatly reduced under the same parameter configuration and the round-trip time is reduced. The link resources are very limited and precious for an aerospace communication network, so that more spaces can be saved for transmission of other information.

The invention relates to the technical field of medical science and technology, and particularly provides an intelligent triage method and device, electronic equipment and a storage medium. The methodcomprises the following steps: acquiring at least one symptom of a patient, wherein the at least one symptom comprises a symptom obtained by the current round of symptom inquiry; acquiring a department recommendation result corresponding to the patient according to the at least one symptom; acquiring feedback for the department recommendation result; determining the symptom obtained by the current round of symptom inquiry as a target symptom according to the feedback; and performing a next round of symptom inquiry based on the target symptom, and repeatedly executing multiple rounds of symptom inquiry until a recommended department is returned to the patient. According to the embodiment of the invention, the method facilitates the reduction of the number of turns of interaction with a patient during triage, and also facilitates the improvement of triage accuracy.

This application relates to the technical field of medical science and technology, and specifically provides an intelligent triage method, device, electronic equipment, and storage medium, wherein the method includes: obtaining at least one symptom of the patient; the at least one symptom includes According to the at least one symptom, obtain the department recommendation result corresponding to the patient; obtain feedback on the department recommendation result; determine the symptom obtained in this round of symptom inquiry as the target symptom according to the feedback; Symptoms carry out the next round of symptom inquiry, and repeat the rounds of symptom inquiry until the patient is returned to the referral department. The embodiment of the present application not only helps to reduce the number of rounds of interaction with patients during triage, but also helps to improve the accuracy of triage.

The invention discloses a method for joint training based on a multi-party 3D printing database. j During the training iteration process, the training members are obtained i The gradient matrix of G i ; train members i pair gradient matrix G i The elements in are sorted according to the absolute value, and the first m elements are selected to obtain the corresponding sparse matrix, and the filling element is 0; calculate the data quality of each training member Pi The correlation between the data quality Q corresponding to all samples of the server, and sort based on the correlation to obtain the training members participating in the current iteration; finally, use the sparse matrix of the training members participating in the current iteration to update the model of the server, and update the training accordingly member's model W i . The invention realizes joint training among multiple databases, and determines the training members of the current round of iterations based on the correlation, reduces the amount of data transmission in the joint training process, reduces the demand for data transmission bandwidth and investment cost, and has better performance. practicability.

The invention discloses a method and device for calculating a second price sealed auction transaction amount, and electronic equipment, and the method comprises the steps: carrying out the statistics of the high 16 bits of a first quotation, and obtaining a first statistical vector; obtaining a first secret share by using a secret sharing technology according to the first statistical vector; according to the first secret share, calculating a high 16-bit first numerical value of the transaction amount; counting the lower 16 bits of the first quotation according to the first numerical value to obtain a second statistical vector; obtaining a third secret share by using a secret sharing technology according to the second statistical vector; according to the third secret share, calculating a lower 16-bit second numerical value of the transaction amount; and calculating the transaction amount according to the first numerical value and the second numerical value. According to the method, each auction party obtains the transaction amount of the second-price sealed auction on the premise of ensuring the quotation privacy of the auction party, and meanwhile, the number of rounds of communication is reduced, so that the calculation overhead and the communication overhead are balanced.

The invention discloses a joint training method based on a multi-party 3D printing database, and the method comprises the steps: obtaining a gradient matrix Gi of a training member i in a jth training iteration process; the training member i sorts elements in the gradient matrix Gi according to absolute values, first m elements are selected to obtain a sparse matrix, and a filling element is 0; calculating the relevancy between the data quality Pi of each training member and the data quality Q corresponding to all samples of the server, carrying out sorting based on the relevancy, and obtaining the training members participating in the current iteration; and finally, updating the model of the server by using the sparse matrix of the training members participating in the current iteration, and correspondingly updating the model Wi of the training members. According to the method, joint training among multiple databases is realized, the training members of the current round of iteration are determined based on the relevancy, the data transmission amount in the joint training process is reduced, the requirement for the data transmission bandwidth and the input cost are reduced, and the method has good practicability.

Determining slot value(s) based on received natural language input and based on descriptor(s) for the slot(s). In some implementations, natural language input is received as part of human- to-automated assistant dialog. A natural language input embedding is generated based on token(s) of the natural language input. Further, descriptor embedding(s) are generated (or received), where each of the descriptor embeddings is generated based on descriptor(s) for a corresponding slot that is assigned to a domain indicated by the dialog. The natural language input embedding and the descriptor embedding(s) are applied to layer(s) of a neural network model to determine, for each of the slot(s), which token(s) of the natural language input correspond to the slot. A command is generated that includes slot value(s) for slot(s), where the slot value(s) for one or more of the slot(s) are determined based on the token(s) determined to correspond to the slot(s).

The invention discloses a motor rotor punching sheet lightweight optimization method, which comprises the following steps: based on the working conditions of a motor, selecting several typical working conditions of the motor as the working condition requirement of rotor design, taking all loads of the rotor working under different working conditions as variables, and grouping the loads according to the corresponding working conditions; three-dimensional design software and analysis methods of finite element topological optimization, size optimization and morphology optimization are adopted, optimization design is conducted on the motor rotor punching sheet structure, rigidity and strength are checked, finally, design is guided through optimization, and sample manufacturing and testing are completed. The optimization method can effectively shorten the design production cycle of the product, improve the lightweight design efficiency of the product, and reduce the manufacturing turn and cost of the product design sample.

The invention relates to a rough yarn feeding stopping automatic control system based on a PLC. The system includes a single-spindle detection control system, a rough yarn feeding stopping data acquisition control system, a rough yarn feeding stopping sub-control box, and a rough yarn feeding stopping shoveling mechanism. The single-spindle detection control system is used for detecting the operation state of a spindle. The rough yarn feeding stopping data acquisition control system is connected with a single-spindle detection control device, calculates data received from the single-spindle detection control system and transmits the data to the rough yarn feeding stopping sub-control box. The rough yarn feeding stopping sub-control box is connected with the rough yarn feeding stopping dataacquisition control system, and controls broken yarns or weak twisted spindles by receiving data transmitted by the rough yarn feeding stopping data acquisition control system. The rough yarn feedingstopping shoveling mechanism is arranged between a leather roller and a rear roller, and is connected with the rough yarn feeding stopping sub-control box. According to the system, the labor cost isreduced easily, the product quality is improved, broken ends and weak spindles are automatically monitored, in-time alarming and in-time rough yarn shoveling are achieved, the generation of weak twisted yarns and strong twisted yarns is effectively reduced, energy is saved, the efficiency is high, and the recycle rate of waste cotton is reduced.

The invention discloses a method for screening protein aptamers by using a micro-fluidic chip. The method comprises steps that: a preset initial nucleic acid library is first incubated with a non-target protein, such that an optimized nucleic acid library is obtained; a target protein is incubated with microspheres, the target-protein-modified microspheres are positioned in a channel of a micro-fluidic chip; the optimized nucleic acid library is delivered into the channel of the micro-fluidic chip; the materials are processed through washing and eluting, such that an initial screened nucleic acid library is obtained; PCR amplification is carried out upon the initial screened nucleic acid library, the amplification products are separated through an affinity column, and the products are processed from denaturative melting and desalting, such that a primary nucleic acid library is obtained; the primary nucleic acid library is used for replacing the initial nucleic acid library, and the previous steps are repeated until a nucleic acid library containing target aptamers is obtained. The method provided by the invention has advantages of good versatility, short screening time, high screening efficiency, and good screening effect.

A method and device for processing graph data. The method comprises: determining graph data to be processed, wherein a graph corresponding to the graph data is divided into a plurality of subgraphs (S210); scheduling computing nodes in a MapReduce system, and performing multiple rounds of MapReduce jobs on the graph data to obtain a process result of the graph data, wherein each of the mapped computing nodes in the MapReduce jobs is configured to process vertexes having interconnection relationships in one subgraph of the plurality of subgraphs (S220). The method can increase the efficiency of processing graph data.

The invention discloses a video monitoring system. A monitoring camera and an alarm processor are connected with a POE switch, the POE switch is connected with a hard disk recorder and a remote monitoring and operation interface, the hard disk recorder is connected with a local monitoring and operation interface, the camera records the real-time situation of a production machine and transmits thereal-time situation to the hard disk recorder and the remote monitoring and operation interface through the switch, a video file is stored for remote viewing, when problems are found, the problems canbe processed in time, and if the file needs to be viewed in a later period, only the information stored by the hard disk recorder needs to be turned on. The video monitoring system disclosed by the invention is simple in structure, convenient and quick to operate, high in reliability and high in operating rate.

The invention discloses an implementation method of an SM4-like cryptographic algorithm, which belongs to the technical field of cryptography. The method comprises the following steps of: grouping file data to be encrypted to generate a plurality of pieces of data, and dividing the plurality of pieces of data into a first type of input data and a second type of input data; performing cyclic shiftoperation on at least two branch data in the first type of input data to obtain preprocessed first type of input data; performing first exclusive-OR operation on the preprocessed first type of input data, and sequentially inputting the first type of input data into an S box for change and P replacement to obtain first output data; and performing a second XOR operation on the first output data andthe second type of input data to obtain an intermediate state, and performing iteration on the intermediate state to obtain a ciphertext. The cyclic shift operation is introduced before XOR of the first type of input data, so that the relative positions of the same data entering the S box for three times are different, and the diffusivity of the algorithm is improved.

The invention discloses a laser welding core parameter optimization method for improving the welding seam strength of a laser tailor-welded blank. The method comprises the following steps that a primary orthogonal test scheme is designed, and multiple tailor-welded test groups which respectively take a defocusing amount delta and an offset eta as variation parameters are set; a corresponding metallographic test and a weld cup drawing test are performed, and an influence rule of the values of the offset eta and the defocusing amount delta on the weld morphology and the weld strength is analyzed; a quadratic orthogonal test scheme and a corresponding welding seam cup drawing test are designed and implemented, an average cup drawing test value curve is drawn, and the value range of the defocusing amount delta and the value range of the offset eta when the cup drawing test value is larger than or equal to 10 mm are obtained. The method has the beneficial effects that the number of rounds of the orthogonal test can be greatly reduced, parameters for orthogonal test data are not set randomly any more, the test data are set in a relatively-small range according to the rule, and the number of times of the orthogonal test in the later period can be remarkably reduced by setting the test data in the mode.

The invention discloses a heart rate component refresh control method and device and a computer readable storage medium, and the method comprises the steps: judging whether the refresh type of a notification component is heart rate detection completion or desktop layout change; when the refresh type of the notification component is that the heart rate detection is finished, resetting a layout variable of the heart rate component, initializing the heart rate component, and refreshing an animation picture of the heart rate component according to a preset animation round; and when the refreshing type of the notification component is desktop layout change, resetting the layout variable, calling component update to determine the current component layout and notify the change, and obtaining and displaying heart rate data sent by the heart rate activity component. A more efficient heart rate part refresh control scheme is realized, invalid asynchronous tasks are removed, invariable variables are created during initialization, only changed contents are updated each time, the refresh interval time is prolonged, and the cycle turns are reduced.