5results about How to "Avoid the build process" patented technology

The invention discloses an off-network block sparse orthogonal matching pursuit underwater acoustic time delay Doppler domain channel estimation method, and belongs to the technical field of underwater acoustic channel estimation. The method solves the problems that a channel estimation method based on traditional orthogonal matching pursuit cannot estimate frequency shift parameters on non-grid points and is high in calculation complexity. According to the method, channel parameters of integer grid points are obtained based on a BOMP algorithm, and then residual Doppler factors on non-grid points are subjected to further fine estimation based on maximum likelihood criterion fitting. The problem that a traditional OMP channel estimation method in underwater OTFS communication can only estimate channel parameters on grid points is solved, and the estimation precision of channel frequency shift parameters is further improved by estimating frequency shift parameters on non-grid points; and meanwhile, a fractional order dictionary is prevented from being established in a channel parameter process, so that the system complexity is reduced to a certain extent. The method can be applied to underwater sound time delay Doppler domain channel estimation.

An electronic data transmission / reception control method and an electronic data transmission / reception control system are provided, which can improve reliability and confidentiality of electronic data to be transmitted and received. In the electronic data transmission / reception control method, a terminal in which an employee app is installed executes: a document number assignment step; an encryption step; a transmission request step; and a browsing step. A computer in which an organization app O is installed executes an identity verification step and a transmission approval step when an employee who belongs to an own organization is a source of the electronic data, or executes an identity verification reply step and a reception approval step when the employee who belongs to the own organization is a destination of the electronic data. A computer in which a service app is installed executes a communication destination specifying step and a relay step.

The present application relates to the technical field of privacy computing, and specifically provides a distributed multi-party asynchronous isolated secure retrieval method and device, wherein a shared network is formed by a data retrieval initiator and a data owner using a front-end machine cluster node, retrieval business is completed based on a front-end machine TEE (Trusted Execution Environment) and a hidden query method; a permission control unit is configured on remote authentication permission control of the TEE, permission monitoring at an instruction level is realized, and through sensitive data desensitization, open data and ciphertext query data confusion, query initiator anonymization and query condition fuzzification, query intention request collection, it is ensured that the entire life cycle of data query and statistical operation is carried out in a trusted isolated environment, and the security and privacy protection of data are strengthened. Compared with the prior art, the present application effectively prevents malicious operation and illegal access, thereby ensuring the security and privacy protection of data.

The present invention provides a method, apparatus and related equipment for uploading terminal data to a blockchain, which relates to the field of communication technologies. The method for uploading terminal data to a blockchain includes: receiving a request for uploading service data, where the request for uploading service data is a request sent by a terminal to the SIM card in response to receiving a first operation; and in response to the request for uploading service data, sending a first command to the terminal based on a data transmission protocol, where the first command is used to establish a communication connection relationship among the SIM card, the terminal and the blockchain platform. By using the SIM card to send a first command to the terminal to establish the communication connection relationship among the terminal, the SIM card and the blockchain platform, the embodiments of the present invention avoid directly establishing a communication connection relationship between the terminal device and the blockchain platform, thereby reducing the risk of leakage of terminal communication information.

One or more embodiments of the invention provide a question and answer method, and an agent training method and device. According to the method, after an intelligent agent obtains first question and answer information, whether visual focusing processing needs to be carried out on an inquiry image or not can be inferred based on the first question and answer information, and under the condition that visual focusing processing needs to be carried out on the inquiry image through inference, an image of a target area related to a first question in the inquiry image can be extracted; obtaining a regional image; and retrieving and generating a first answer corresponding to the first question by using an image retrieval tool and taking the regional image as a retrieval condition. Under the condition that visual focusing processing does not need to be carried out on the inquiry image through reasoning, the complete inquiry image can be used as a retrieval condition for retrieval. Afterwards, text retrieval can be dynamically performed or a final answer can be made based on an image retrieval result.