9results about How to "Easy search" patented technology

The application discloses a password security evaluation method and system based on quadratic Boolean equation variable segmentation, and belongs to the technical field of password security evaluation. The method comprises the following steps: constructing a quadratic Boolean equation set about a password algorithm to be evaluated; constructing a mixed integer linear programming model of the quadratic Boolean equation set; solving the mixed integer linear programming model based on a set target function, to obtain an optimal segmentation result of x variables in the quadratic Boolean equation set; performing quadratic Boolean equation set solving based on the segmentation result of the x variables, to obtain a plurality of groups of candidate solutions; and decrypting the ciphertext according to the candidate solutions, to obtain a security evaluation result of the password algorithm to be evaluated. The application can provide security evaluation efficiency of the password algorithm.

The utility model relates to the technical field of tapping and drilling, in particular to a tapping and drilling all-in-one machine. Comprising an operation frame, a bearing frame is arranged at the bottom end of the operation frame, a driving module is installed at the upper end of the operation frame, a drill bit body is arranged on the lower surface of the driving module, an adjusting mechanism is arranged on the surface of the bearing frame, the adjusting mechanism comprises a bearing groove, and the bearing groove is formed in the surface of the bearing frame; a magnetic frame is clamped to the inner wall of the bearing groove, connecting plates are fixedly connected to the surfaces of the two sides of the magnetic frame, the surfaces of the connecting plates are clamped to the side walls of the bearing frame, fixing frames are fixedly connected to the two sides of the bearing frame, rotating plates are rotatably connected to the inner walls of the fixing frames, and connecting holes are formed in the surfaces of the rotating plates. The inner wall of the connecting hole is connected with the surface of the connecting plate in an inserted mode. The tapping and drilling all-in-one machine has the advantage that metal wires can be conveniently protected in the drilling use process.

The multifunctional unmanned rescue boat comprises a boat body, an equipment platform is arranged on the boat body, a first equipment area, a second equipment area, a third equipment area and a fourth equipment area are sequentially arranged on the equipment platform in the length direction of the equipment platform, carrying equipment is placed in the first equipment area, and a life buoy and an unmanned aerial vehicle are placed in the second equipment area. A monitoring device is placed in the third equipment area, and a driving device is placed in the fourth equipment area; the equipment platform is further provided with a plurality of mechanical arms, and the mechanical arms are arranged on the boat head and the two sides of the boat body. The rescue boat is complete in equipment and can be remotely controlled through the unmanned aerial vehicle and the unmanned underwater vehicle of the equipment platform, and water and underwater targets can be conveniently searched; the three-side carrying capacity of the boat is improved through the three mechanical arms, and the conveying and rescue efficiency of the boat is improved; the tail water-jet propeller has good dynamic property, speed reduction is achieved by adjusting the direction of a nozzle, and when the boat is decelerated and drives to a person falling into water, the risk that the person is twisted is reduced.

The utility model discloses a drowning self-rescue device for an unmanned aerial vehicle. The drowning self-rescue device comprises a shell, an air bag, a medicament and a one-way valve, the shell is provided with a reaction cavity, and the shell is provided with a mounting opening for communicating the outside with the reaction cavity; the medicament is arranged in the reaction cavity and generates gas when encountering water; the one-way valve is arranged in the installation opening, and gas and water can only flow into the reaction cavity unidirectionally from the outside through the one-way valve. The drowning self-rescue device for the unmanned aerial vehicle is mounted on the unmanned aerial vehicle during use. When the unmanned aerial vehicle falls into water, external water pressure enables water to enter the water-falling self-rescue device through the one-way valve, and gas is generated after the chemical reacts with the water to inflate the air bag, so that the unmanned aerial vehicle emerges from the water together with the air bag, the unmanned aerial vehicle is prevented from being soaked in the water for a long time, and a user can conveniently and quickly search the water-falling unmanned aerial vehicle; and the financial loss of the user can be reduced.

The application provides a large flexible sheet clamp number optimization method based on an improved particle swarm algorithm, which comprises the following steps: step 1, a three-dimensional model of a large flexible sheet is constructed, and a data interaction file of the constructed model is exported; step 2, finite element mesh division is carried out, and a form source code file is exported; step 3, feature data is extracted, and relevant data including node coordinates of finite element mesh division, a stiffness matrix of the model and a force matrix of the model are read from the form source code file; step 4, optimization is carried out by using the improved particle swarm algorithm, so that the optimal clamp number and clamp distribution under the condition of meeting assembly requirements are obtained; and step 5, the optimization result is tested and visualized. Under the premise of meeting engineering requirements, the cost caused by the clamp number and clamp movement is as small as possible, and an optimization scheme for the clamp number used in the large flexible sheet assembly process is provided.

This application provides a website retrieval method and apparatus that can improve the accuracy of search engine retrieval results and increase the efficiency of obtaining target websites. The method includes: determining at least one key subtext in the initial search text based on its part-of-speech tagging; performing semantic-based transformation processing on each key subtext according to its semantics to generate representative text corresponding to each key subtext and related to the identification information of the website to be retrieved; determining a first search text based on the position of each key subtext in the initial search text and the representative text corresponding to each key subtext; and retrieving the first search text using a search engine to obtain a first target website.

This invention provides a personalized search and recommendation method based on knowledge forests and user preferences, relating to the fields of recommendation knowledge representation and search technology. The method includes: collecting historical information from several users and constructing a knowledge pattern tree for each user according to their needs; using an entity relation extraction algorithm to extract entity relations from the user's historical information, and constructing a knowledge tree using the extracted entities and the knowledge pattern tree, and then constructing a knowledge forest using all users' knowledge trees; using graph embedding technology to assign weights to each knowledge tree in the knowledge forest, obtaining the final knowledge forest and saving it to a graph database; constructing a target user's knowledge tree according to the target user's needs, calculating the similarity between the target user's knowledge tree and each knowledge tree in the knowledge forest by calling the knowledge forest in the graph database, and generating a personalized recommendation list for the target user, thus improving the accuracy and efficiency of inference search.

The application discloses a kind of gas pipeline leakage detection methods based on acoustic signal, comprising the following steps:S1, the leakage acoustic signal on pipeline is acquired and is handled;S2, the feature of the acoustic signal of the leakage acoustic signal after processing with gas pipeline normal operating condition is analyzed, and the characteristic quantity sensitive to gas pipeline leakage condition is established and extracted;S3, the characteristic quantity of other time-frequency domain of leakage acoustic signal is extracted, and the feature set is constructed, and the optimal characteristic quantity is selected based on feature selection algorithm, and the optimal characteristic quantity is used as the input of support vector machine, and the model is trained;S4, for the signal of real-time acquisition, by steps S1-S3 processing, the model of training is used to identify the state of gas pipeline.According to the application, the dependency problem of characteristic quantity to specific pipeline is effectively solved, a kind of robust gas pipeline leakage detection method is established, the accurate identification of gas pipeline leakage is realized, and the safe operation of city gas pipeline network is guaranteed.

The embodiment of the invention discloses a search component display method and device.According to the main technical scheme, the method comprises the steps that a playing page used for playing media files is displayed, a first search component is displayed on the playing page, and the first search component is used for skipping to a first search page after being triggered by a first operation gesture; the first search page is used for executing a search task; in response to the operation of triggering the component switching function, a second search component is displayed on the playing page, and the visual layout attribute of the second search component is obtained based on the behavior information of the user within the preset time and / or the basic information of the user. In this way, the visual effect is improved, the user can conveniently and rapidly search, and then the search experience of the user is improved.