23results about How to "The effect is accurate" patented technology

The invention discloses a vulnerability load classification method and system based on codes and semantic features, and belongs to the technical field of intrusion detection. The method comprises the following steps: encoding a vulnerability load, masking an encoding result, and obtaining a first representation of the vulnerability load through predicting a mask value; acquiring a second representation of the vulnerability load based on a TF-IDF encoder; synthesizing the first representation and the second representation to obtain a comprehensive representation of the vulnerability load; and classifying the comprehensive representation to obtain a classification result of the vulnerability load. According to the method and the device, the vulnerability detection accuracy is improved by enhancing the characterization capability of the vulnerability load.

The utility model relates to the technical field of brake shoe roller press fitting, in particular to brake shoe roller bushing press fitting equipment. According to the technical scheme, the brake shoe roller bushing press-fitting equipment comprises a back plate, a base, a bottom plate and a pressing plate, the base is installed on the bottom plate, a baffle is installed above the base, a limiting sleeve is installed above the baffle, a push plate is installed in the base, the push plate is elastically installed in the base through a spring, and the pressing plate is installed on the base. A limiting seat and a limiting shaft are arranged on the push plate, a back plate is installed at one end of the bottom plate, an air cylinder is installed on the back plate, and a push rod of the air cylinder is connected with a pressing plate through a connecting rod. According to the utility model, the roller and the bushing can be conveniently limited during press fitting, so that the assembly precision of the roller and the bushing is ensured.

The invention discloses a system Gaussian filter design method for multi-step measurement of random delay and colored measurement of noise. A first-order autoregression model is introduced to whiten the colored measurement noise, and a system with the colored measurement noise is converted into a nonlinear system with normal white noise; modeling delay measurement data by means of a Bernoulli random variable, processing multi-step random delay by taking new system measurement noise as a state increment, realizing one-step prediction of delay measurement information, and finally establishing a nonlinear system state model and a measurement model with multi-step measurement random delay and colored measurement noise. And an unscented transformation mode is adopted to approximate non-Gaussian weighted integral, and an unscented Kalman filtering algorithm under the conditions of multi-step measurement random delay and colored measurement noise is provided. According to the method, the accuracy of the filter in processing multi-step measurement random delay and colored measurement noise is improved, the deviation in a filtering result is reduced, and higher precision and better numerical stability are achieved.

The invention discloses an equipment fault detection method and device and electronic equipment. The method comprises the steps that the signal type of a signal collected by a target sensor is acquired, and the target sensor is a multi-path sensor; according to the signal type, a circuit connection relation is determined, and a target circuit is connected with a target sensor to obtain a signal collected by the target sensor; a relay switch is controlled to enable the target circuit to be connected according to the circuit connection relation, a plurality of synchronous alternating-current electric signals collected by the target sensor are obtained, and the synchronous alternating-current electric signals correspond to multiple paths of the target sensor one to one; determining bias voltage values respectively corresponding to the plurality of synchronous alternating current electric signals; and according to the plurality of bias voltage values, determining a fault result of whether the target equipment has a fault. According to the method and the device, the technical problem that whether a fault exists in the equipment is difficult to determine conveniently, quickly and accurately in related technologies is solved.

The invention provides an isogeometric topology optimization method and device based on a volume space domain mapping model, equipment and a medium, and relates to the technical field of isogeometric topology optimizing.The method comprises the steps that a mapping point set is obtained according to triangular patch information of a geometric model to be optimized, and an initial mapping volume model is generated based on the mapping point set and a three-dimensional NURBS volume; generating a reconstruction mapping body model; marking a design domain based on the reconstructed mapping body model, assembling a preset target structure parameter matrix, and constructing a preset isogeometric topology optimization model by taking a model construction parameter of the design domain as a design variable and taking a minimum preset target structure parameter as an optimization target; and updating design variables of a preset isogeometric topological optimization model by adopting an optimization criterion method based on the sensitivity until a preset convergence condition is met, and obtaining a target geometric model corresponding to the geometric model to be optimized, so as to solve the problem that an existing isogeometric topological optimization method is difficult to be applied to topological optimization engineering of a complex topological structure model.

The present invention provides a load driving device, which can diagnose a fault of the output terminal before the charging voltage is stabilized in a structure in which a capacitor is connected to the output terminal of the load driving device driving an inductive load. The load driving device of the present invention has a capacitor connected between the load terminal and the ground terminal, and diagnoses whether the load terminal has a fault based on the current flowing between the internal power supply of the diagnostic circuit and the load terminal.

The invention discloses application of lauromacrogol in preparation of a medicine for treating nasal polyp, and belongs to the technical field of medicines. The invention discloses an application of lauromacrogol in preparation of a medicine for treating nasal polyp. When lauromacrogol is used for treating nasal polyp, the nasal polyp can be reduced, and clinical symptoms can be eliminated. According to clinical data statistics, the lauromacrogol is adopted to treat nasal polyp, the cure rate is 89.56%, the improvement rate is 10.44%, and no recurrent symptoms occur. The invention creatively provides a new application of lauromacrogol, and the lauromacrogol is used for preparing the medicine for treating nasal polyp, and is definite in effect, small in adverse reaction and worthy of popularization and application.

The utility model discloses automatic filling equipment for hydrogel production. Relates to the technical field of hydrogel filling equipment. Comprising a workbench, a storage tank, a liquid pump and a processing box are fixedly connected to the top of the workbench, an electric heating base is connected to the inner bottom wall of the storage tank, an electric heating pipe is fixedly connected to the top of the electric heating base, a first control panel is fixedly connected to the exterior of the storage tank, and the first control panel is electrically connected with the electric heating base. The electric heating base can be started through the control panel outside the storage tank, the electric heating rods are installed on the electric heating base and can be evenly distributed in the storage tank, the dimension of the storage tank is more uniform in all directions, and therefore it can be ensured that different kinds of glue can be evenly heated in the heating process, and the glue storage efficiency is improved. And the solidification phenomenon caused by non-uniform temperature is avoided.

The present invention provides a nanoparticle PEG-CPP30 / QR@FT and a preparation method and application thereof, belonging to the technical field of nanoparticle preparation, and comprising the following steps: S1, preparing a metal organic framework material FT; S2, preparing a drug-loaded particle QR@FT; S3, preparing a nanoparticle PEG-CPP30 / QR@FT. The present invention adopts the above-mentioned nanoparticle PEG-CPP30 / QR@FT and a preparation method and application thereof, and the prepared nanoparticle PEG-CPP30 / QR@FT is a heat shock protein inhibitor with a definite effect.

A novel tensioning wheel comprises a tensioning wheel body, a connecting arm is installed on the tensioning wheel body, the other end of the connecting arm is movably connected with an installation base, a cavity with one end open is longitudinally formed in the installation base, a butt joint strip is arranged between the connecting arm and the installation base, one end of the butt joint strip is fixedly connected with the connecting arm, and the other end of the butt joint strip is fixedly connected with the installation base. The other end of the butt joint strip is inserted into the cavity; a lead screw and a bearing are further arranged in the cavity, the lead screw is connected with the mounting base through the bearing, the middle of the lead screw is connected with a worm gear through a spline, a screw hole is formed in the end, facing the lead screw, of the butt joint strip, and the lead screw is meshed with the screw hole. A worm is rotatably arranged on the mounting seat in the horizontal direction perpendicular to the butt joint strip, and the worm is meshed with the worm gear; the device has the advantages of being simple in structure and capable of adjusting the tightness degree of the tensioning wheel in a stepless mode.

The present application discloses a knowledge graph query method, device, equipment and storage medium, which relates to the field of intelligent search technology, including: constructing a vector database based on the corresponding knowledge graph and word embedding algorithm to obtain a target vector database; obtaining an initial large model and a preset data set that have been pre-trained; wherein the preset data set includes a corresponding natural language query statement and a corresponding knowledge graph query statement; fine-tuning the initial large model based on the preset data set and model fine-tuning parameters to obtain a target large model; performing corresponding thought chain construction and context design on the knowledge graph query statement generation task of the target large model to activate the context learning ability of the target large model when performing reasoning; performing query statement reconstruction processing on the target large model based on the target vector database, so as to use the processed target large model to perform knowledge graph query and obtain query results. Effectively improve the accuracy.

The invention discloses an electrochemical etching experiment device, and relates to the technical field of electrochemical etching, the electrochemical etching experiment device comprises a power supply, a processing box, an electrolysis chamber fixedly connected in the processing box and an electrolyte box fixedly connected with the bottom of the processing box, one side of the electrolysis chamber is provided with two groups of auxiliary gears and motors, and output shafts of the motors are provided with main gears; one side of the inner wall of the electrolysis chamber is fixedly connected with an electric telescopic rod, one end of the electric telescopic rod is fixedly connected with a piston plate, the piston plate is in sliding connection with the inner wall of the electrolysis chamber, two arc-shaped grooves are formed in the piston plate, and middle electrolysis plates are detachably connected into the arc-shaped grooves correspondingly; the inner top wall and the inner bottom wall of the electrolysis chamber are fixedly connected with arc-shaped electrolysis plates respectively; according to the present invention, the apparatus has characteristics of simple structure and complete functions, and can meet the experiment requirements of rectangular workpieces and cylindrical workpieces.

The present invention provides an antibody targeting an AXL protein or an antigen binding fragment thereof, and a preparation method therefor and use thereof. Further provided are an isolated polynucleotide encoding the antibody targeting the AXL protein or the antigen binding fragment thereof, and a vector comprising the isolated polynucleotide. The antibody targeting the AXL provided by the present invention can specifically bind to the AXL protein, can mediate ADCC to kill tumors, or have an anti-tumor effect as a target recognition domain of CART cells, and can be used for preventing or treating tumors, and hence it has a wide application prospect.

The invention discloses a traditional Chinese medicine composition for preventing and treating cerebral arterial thrombosis and a screening method thereof, and the effective components of the traditional Chinese medicine composition comprise the following substances in parts by weight: 30-50 parts of 3-caffeoylquinic acid, 20-40 parts of 4, 5-dicaffeoylquinic acid and 30-50 parts of scutellarin. The traditional Chinese medicine composition disclosed by the invention has an obvious improvement effect on cerebral arterial thrombosis, and can also protect damaged neurons, improve the activity of nerve cells and effectively relieve cerebral arterial thrombosis injury. Meanwhile, according to the screening method of the composition, a regression model with brain protection related indexes as dependent variables and the proportion of all the components as independent variables is established through mixed material design, the predictive ability of the model is evaluated, and after the predictive ability of the model reaches the standard, synchronous optimization of the multiple brain protection indexes is carried out; and solving the optimal ratio of each component and carrying out experimental verification. The traditional Chinese medicine composition screened by the method is stable in activity and exact in effect.

The utility model relates to the technical field of sewage treatment, in particular to a sewage sample multi-point sampling device which comprises a sampling cylinder, a first sampling assembly and a second sampling assembly are arranged in the sampling cylinder, the first sampling assembly comprises two bearing frames which are oppositely connected in the sampling cylinder in a sliding mode, and the second sampling assembly comprises a second sampling assembly and a third sampling assembly. A bearing space is formed between the two bearing frames, and a driving assembly for driving the two bearing frames to get close to each other is arranged in the sampling cylinder; the second sampling assembly is slidably connected to a liquid storage frame in the sampling cylinder, and a liquid inlet is formed in the liquid storage frame; and a locking assembly for fixing the bearing frame is arranged on the sampling cylinder. The driving assembly drives the two bearing frames to get close to each other, when the two bearing frames get close to each other, a sample body at the bottom of sewage is collected, and meanwhile, in the downward sliding stroke of the sampling cylinder, the liquid storage frame and the sampling cylinder are driven to be intermittently conducted, so that sewage samples at different depths can be collected.

A kind of ear canal cleaning device with adjustable viewfinder focal length and air-water temperature, including base, and the hand-held part that can be taken out from base and placed into the base.The hand-held part includes handle and ear cover.The ear cover is provided with ear canal tube, and viewfinder tube is provided in the ear canal tube, camera device is installed in the viewfinder tube, and the camera device can be controlled reciprocating displacement in a straight line direction, and user can clearly observe the cleaning situation in ear canal;The ear cover structure of the utility model has the accurate observation of ear canal cleaning situation and effect by user;The utility model is through air pipe, water jet pipe and water suction pipe, and heating device and other structures, reach let user can with comfortable, relaxed body posture carry out ear canal cleaning, and ensure ear canal cleaning effect, improve the use experience of user.

The present invention relates to an automatic and precise pressure control device for grouting anchor rods, comprising an upper clamp, a lower clamp, a bursting disc, a spring, a metal block and a high-pressure resistant metal pipe. The high-pressure resistant metal pipes on both sides of the device can be fixed on the grouting pipeline by quick plugging. When the grouting pressure in the pipeline is greater than the preset value of the bursting disc, the bursting disc is torn apart along the supporting edge and falls off as a whole. The spring returns to its original state, thereby pushing the metal block and the fallen bursting disc into the groove of the lower clamp, preventing the slurry from continuing to flow. The device realizes automatic pressure control, solves the problem that the grouting anchor rod (cable) is overly dependent on manual judgment of the grouting situation, effectively improves the effect of automatic and precise control of the grouting pressure, and ensures the safety of the grouting process.

The invention discloses an electric vehicle charging and discharging control method and system, and relates to the technical field of electric vehicle charging and discharging control, and the method comprises the steps: constructing a first discharging scheduling model and a second discharging scheduling model according to the discharging capability and the charging cost; performing optimization analysis on the first charging and discharging model and the second charging and discharging model, and formulating different charging and discharging strategies of the electric vehicle; and formulating a charging mode according to the charging and discharging strategy and a user demand scene, and optimizing the charging and discharging strategy according to a simulation result. According to the method, the intelligence and automation level of the charging and discharging process of the electric vehicle is improved, the manual intervention cost is reduced, the stability and economical efficiency of power grid operation are improved by optimizing the charging and discharging strategy, different user requirements are met, the flexibility and adaptability of charging and discharging of the electric vehicle are improved, the charging cost is reduced, and the method is suitable for popularization and application. And the charging efficiency is improved, and popularization and promotion of the electric automobile are facilitated.

The present invention provides a real-time processing method for missing and outlier data of MEO satellite radiation dose, which learns the oscillation period T of radiation dose data from the data recorded by each radiation dose detector carried by the satellite; learns the radiation dose prediction model based on trend and Fourier characteristics; performs outlier detection on the newly arrived radiation dose data based on the prediction model; and replaces the missing values ​​and outliers in the newly arrived radiation dose data with the predicted values. Based on the prediction model, the present invention processes the missing values ​​and outliers in the latest downlinked data in real time, achieves a more accurate effect, and significantly reduces the fitting error, providing a complete and clean data set for subsequent data release, modeling, visualization and other tasks.

The present invention provides an experimental device for generating sub-hemispherical bubbles, an experimental method and an experimental system thereof. A transparent glass water tank (1) is used to generate sub-hemispherical bubbles in cooperation with a thin aluminum plate (6) under the action of a shock wave; a tracer particle (2) is used to display the sub-hemispherical bubbles under the irradiation of a laser source (3); a host computer (4) is used to display data obtained by a mechanical sensor (5) and to control the laser source (3), a high-speed camera (7) and a shock wave source (8); the mechanical sensor (5) is used to monitor the pressure data applied by the shock wave source (8) to the thin aluminum plate (6); the thin aluminum plate (6) is used to obtain sub-hemispherical bubbles in cooperation with the shock wave source (8); and the shock wave source (8) is used to shock the thin aluminum plate (6) to obtain shock waves, tensile waves and compression waves. The present invention is used to fill the gap in the experiment of generating sub-hemispherical bubbles and lay a foundation for the popularization of sub-hemispherical bubble experiments in the future.

The utility model discloses a pressure difference transmitter which comprises a pressure difference transmitter body, the outer walls of the two sides of the pressure difference transmitter body are fixedly connected with a first installation shell and a second installation shell respectively, the inner side wall of the first installation shell is symmetrically provided with four insertion cavities, and the inner side walls of the four insertion cavities are fixedly connected with flexible sheets. According to the utility model, through the arrangement of the first mounting shell and the second mounting shell, the first mounting shell and the second mounting shell are connected and fixed in a manner that the insertion block is inserted into the insertion cavity in the use process, and the outer side wall of the first abutting block abuts against the outer side wall of the second abutting block for limiting and fixing; compared with a traditional shell, the pressure difference transmitter provided by the utility model is more convenient and does not lose protection on the pressure difference transmitter body by combining a sealing sheath wrapping the outer walls of the bottom ends of the first mounting shell and the second mounting shell and a stable clamping block abutting against the outer side wall of the pressure difference transmitter body.

The invention discloses a method for designing a Gaussian filter of a system under related conditions of one-step measurement of random delay and synchronous noise. A measurement single-step random delay phenomenon in a nonlinear Gaussian discrete system is described by means of a Bernoulli random sequence, system measurement noise is used as a state increment to realize one-step prediction of delay measurement information, and a condition Gaussian distribution lemma is used to solve a noise correlation problem. Therefore, a target state model and a measurement model with one-step measurement random delay and synchronous correlation noise characteristics are constructed, an optimal estimation algorithm in a Gaussian filtering framework form is designed, and a Taylor series expansion formula is adopted to linearize the system. An extended Kalman filtering algorithm under the condition of one-step measurement of random delay and synchronous correlation noise is given. Through the mode, the accuracy of the filter in processing one-step measurement random delay and synchronous correlation noise is improved, the deviation in a filtering result is reduced, and higher precision and better numerical stability are achieved.