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230 results about "Domain identification" patented technology

Novel offline payment method

The invention discloses a novel offline payment method. The method comprises the steps that account numbers of an accountee party and a receiving party serve as IDs, and a corresponding public key and private key are mapped according to business sub-domain identifications; a random number is selected from the receiving party, signature is conducted on the random number through the private key, and a two-dimension code is generated; the two-dimension code is scanned through the accountee party, the public key is mapped by means of the receiving party ID and the service sub-domain identification, and attestation is conducted on a signing message; if attestation succeeds, the accountee party successfully pays according to transaction information; signature is conducted on the random number by the accountee party through the private key after payment to generate a two-dimension code; the receiving party scans the two-dimension code, the public key is mapped through the accountee party ID and the business sub-domain identification, and attestation is conducted on a signing message; if attestation succeeds, posting is successfully conducted on the receiving party. According to the novel offline payment method, payment does not rely on the support of a network any more, payment is achieved on various mobile equipment, and the payment process is greatly facilitated. The two-way authentication process based on the identifications is adopted by the two payment parties, the legality of transactions is fully guaranteed, and illegal manipulation of information and information disguising are prevented.
Owner:CHINA SMARTCITY TECH

System and method for grid fault identification based on random point distribution PMU

The invention discloses a system and method for grid fault identification based on a random point distribution PMU and belongs to the technical field of power system fault identification. The system comprises a fault relative domain identification module, a fault locating module, a fault component identification module and a domain backup protection module. A grid structure changing characteristic is evolved to a branch current difference by the fault relative domain identification module, so that fault relative domain identification is achieved; overall traversal is conducted on a relative domain by the fault locating module, so that accurate location of a fault point is achieved based on a node voltage matching condition; based on virtual current differential, protecting criteria are constructed through an opposite terminal calculated current and a home terminal actually detected current by the fault component identification module, so that fault component identification is achieved; according to domain backup protection operation logic, the near backup tripping function and the far backup tripping function are achieved by the domain backup protection module. Complete domain backup protection under the environment of random PMU point distribution is achieved and the dependence degree on synchronous data of protection is reduced to a great extent.
Owner:NORTH CHINA ELECTRIC POWER UNIV (BAODING)

Identification distribution and separate-storage method, identification replacing transmission method and system

The invention discloses an identification distribution and separate-storage method, an identification replacing transmission method and system, relating to the field of network safety. The identification distribution and separate-storage method comprises the following steps of: dividing a heterogeneous wireless network by function into a user domain, an access domain, a service domain and an attribution domain, wherein the service domain comprises at least one access domain, the access domain comprises at least one user domain, and the attribution domain and the service domain are the same network when in local service; and after the successful authentication of a terminal, allocating the attribution domain, the service domain and the access domain with domain identifications domain by domain. Based on the access authentication of the heterogeneous wireless network, the invention provides a mechanism of the identification distribution, the separate storage and the replacing transmission of the identification. In the transmission process of the domain identification in the user domain, the access domain, the service domain and the attribution domain, the real identity and the location information of a terminal can be effectively concealed through the retrieval and the replacement among domains and the dynamic update at different identification mapping servers, thereby enhancing the credible access of the heterogeneous wireless network and the safety protection capacity on mobility problems.
Owner:THE PLA INFORMATION ENG UNIV

Method for establishing machine learning model to check webpage hidden links through domain identification and theme identification

ActiveCN107566391AImprove the problem of poor recognition effectSolve the problem of tamperingComputing modelsTransmissionFeature extractionDomain analysis
The invention provides a method for establishing a machine learning model to check webpage hidden links through domain identification and theme identification. The method comprises the steps of collecting a great number of webpage source codes which are marked as the webpage source codes comprising hidden links and the webpage source codes marked as the normal webpage source codes, and forming a training set based on the webpage source codes; extracting a risk text, risk degree, theme difference degree, a theme, a risk text vector, a risk text abnormal probability and the risk text length in each web page source code through suspicious domain identification, sensitive domain identification, secure domain identification, all-domain analysis and theme identification; carrying out model training on characteristic data of all web page source codes in the training set through utilization of a machine learning algorithm, thereby obtaining a classification distinguishing model; and importingthe characteristic data of to-be-predicted web page source codes into the classification distinguishing model, thereby obtaining a result of whether the to-be-predicted web page source codes comprisethe hidden links or not. According to the method, the highly mixed hidden link code identification effect is good, the feature extraction is relatively complete and the problem that a traditional method cannot accurately distinguish the hidden links and page tampering can be solved well.
Owner:上海斗象信息科技有限公司

Automatic detection method of wheat seedling emergence

The invention provides an automatic detection method of wheat seedling emergence, comprising the following steps: a wheat image is acquired through segmenting a wheat field image acquired by using a camera in real time; connected domain identification is performed on the wheat image, and centers of mass of connected domains are marked; the seeding direction of the wheat is identified according to the wheat image, if the seeding direction is a horizontal direction, the wheat image is divided into a plurality of subsections in a vertical direction, and if being a vertical direction, the wheat image is divided into a plurality of subsections from a horizontal direction; and the number of the center of mass of the connected domains in each subsections is counted. If the number of the center of mass of the connected domains is greater than a predetermined subsection seedling emergence determining threshold value then the corresponding subsection is determined to be a seedling emergence subsection. If the number of the seedling emergence subsections is greater than an image seedling emergence determining threshold value then the wheat in the wheat image are in a period of seedling emergence. The method can determine the growth period of the wheat in real time with high accuracy of detection results, and has important guiding significance for all kinds of farming activities of the wheat.
Owner:HUAZHONG UNIV OF SCI & TECH

Fault correlation domain identification system based on fault component reactive power and method thereof

The invention relates to a fault correlation domain identification system based on fault component reactive power and a method thereof and belongs to the electric power system fault identification technology field. The fault correlation domain identification system comprises a correlation domain division subsystem and a protection motion determination subsystem, wherein the correlation domain division subsystem takes each start protection station as a center and takes a same voltage grade outgoing line pair end station as a boundary division protection correlation domain, the protection motion determination subsystem realizes establishment of a protection algorithm model, a protection algorithm information selection module extracts fault component reactive power in a fault association domain, a protection principle module realizes construction of protection action quantity and braking quantity based on the fault component reactive power, a protection motion characteristic module determines and identifies the fault association domain according to protection action. The fault correlation domain identification system can respectively acquire accurate determination results during occurrence of each types of faults in and out of the fault correlation domain, has sensitive and reliable protection performance, not only realizes an electrical network remote backup protection function under a common condition, but also successively solves a problem of protection difficulty under a condition of direct current disappearance of a transformer station and further improves electrical network security.
Owner:NORTH CHINA ELECTRIC POWER UNIV (BAODING)

Online classroom video knowledge point identification method and device

The invention relates to the field of teaching, and discloses an online classroom video knowledge point identification method and device, which can accurately identify all knowledge points contained in a classroom video. The method comprises the following steps: determining a knowledge point domain of a classroom video; acquiring a classroom video, which comprises a teaching courseware part and ablackboard writing part; for the teaching courseware part, dividing the teaching courseware part into multiple sections of videos according to courseware page switching time points, and identifying afirst set of knowledge points contained in each section of video based on the knowledge point domain; for the blackboard writing part, dividing the blackboard writing part into multiple sections of videos according to blackboard writing updating time points, and identifying a second set of knowledge points contained in each section of video based on the knowledge point domain; dividing the audio corresponding to each section of video into a plurality of audio clips according to audio pause points, and identifying a third set of knowledge points contained in each audio clip based on the knowledge point domain; and calculating a set of the knowledge points contained in the classroom video according to the first set, the second set and the third set.
Owner:浙江蓝鸽科技有限公司
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