60results about How to "Efficient response" patented technology

The invention discloses a noise reduction processing method and device, a vehicle and a storage medium, and relates to the technical field of intelligent cabins, and the method comprises the steps: carrying out the recognition based on an error signal and an accelerometer signal of the vehicle, and obtaining a noise scene where the vehicle is located; decomposing the accelerometer signal into a plurality of sub-band signals which are not overlapped with one another; for each sub-band signal, determining a noise reduction processing parameter corresponding to each sub-band signal based on the energy analysis and noise scene of the sub-band signal; based on the noise reduction processing parameter corresponding to each sub-band signal, performing adaptive filtering on each sub-band signal in combination with the error signal to obtain a noise reduction signal corresponding to each sub-band signal; and carrying out fusion reconstruction on the noise reduction signals corresponding to the plurality of sub-band signals to obtain a full-band noise reduction signal. According to the invention, adaptive filtering and noise reduction are carried out on each sub-band signal based on the noise scene where the sub-band signal is located, efficient division and treatment and response can be carried out on complex and multi-spectral structure noise, the noise reduction effect is improved, and the vehicle use experience feeling of a user is further improved.

The invention discloses a social network rumor suppression method and system based on a sphere domain index, and relates to the technical field of social network information processing. For the NP-hard characteristic of a rumor suppression problem under a competitive independent cascade model and the defect of high calculation cost of a traditional algorithm, efficient response under a multi-query scene is achieved through three-step progressive algorithm design. The method comprises the following steps: firstly, proposing an HMP-TC algorithm, replacing a forward sampling process in mixed sampling with typical cascade, and depicting a stable structure of rumor propagation; secondly, proposing an HMP-LB algorithm, constructing a landmark index structure based on point coverage, only maintaining influence ball domain information for index nodes, and correcting deviation through a probability weight; and finally, proposing a PTC-LB algorithm, introducing a protection sphere domain index formed by protection typical cascade and protection relation samples, and realizing non-sampling rapid optimization in a query stage. According to the method, on the premise of maintaining 90%-95% of rumor blocking effect, the single query speed is increased by 10-30 times, part of scenes can reach two orders of magnitude, and the quick response problem of rumor suppression in a large-scale social network is effectively solved.

The application discloses a preparation method of zolmitriptan, relates to the technical field of drug synthesis, and comprises the following steps: adding compound 1 and reagent 1 into solvent 1 to perform a first reaction to obtain compound 2; adding the compound 2, reagent 2 and reagent 3 into solvent 2 to perform a second reaction to obtain compound 3 and the like. Compared with the prior art, the application provides a novel synthetic route for preparing zolmitriptan, the route uses L-4-bromophenylalanine as a starting material, and new synthetic steps are adopted, such as using reagent 5, such as a t-butyl alcohol metal salt and sodium hydride, to construct the oxazolidinone structure in zolmitriptan and using a coupling reaction to construct the indole ring in zolmitriptan, so that the yield of the obtained target product is significantly improved, the use of high-toxicity and high-risk reagents in the existing synthetic route is effectively avoided, and a mild, efficient, green and environmentally-friendly synthetic route for preparing zolmitriptan is provided.

The invention discloses background layer updating during coding. A method performed by an image processing apparatus for updating a background layer during encoding of a scene is provided. A scene is encoded based on classifying objects depicted in the scene as foreground or background. The background is divided into ranked background layers, wherein each background layer is associated with a respective depth model. The method comprises detecting (S102) a change in an image portion of a background layer. The method comprises calculating (S104) a difference between the image portion and a corresponding image portion of a background layer ranked behind the one background layer. The method comprises selecting (S106a) the background layer ranked behind the one background layer to represent the image portion when the difference is less than a threshold.

The utility model belongs to the technical field of electromagnetic shielding, particularly relates to a multilayer nested high-frequency electromagnetic shielding device, and aims to solve the problems that a single-layer box body of an existing device is extremely limited in high-frequency electromagnetic wave absorption capacity, a large amount of high-frequency electromagnetic interference is only simply reflected, the reflected electromagnetic waves are repeatedly refracted inside and outside the box body, and complex standing waves are formed. In order to solve the problems that the electromagnetic interference intensity in a box body cannot be effectively reduced and the complexity of an electromagnetic environment is aggravated, the utility model provides the following scheme: the multi-layer nested high-frequency electromagnetic shielding device comprises a shielding base, and an inner-layer shielding body, a middle-layer shielding body and an outer-layer shielding body are sequentially nested on the surface of the shielding base from inside to outside; the beneficial effects of the utility model are that the design of nesting in sequence from inside to outside enables each layer of shielding body to work cooperatively, weakens high-frequency electromagnetic interference layer by layer, and compared with a single-layer shielding structure, can cope with a complex high-frequency electromagnetic environment more comprehensively and efficiently, and significantly improves the shielding effect.

The utility model relates to the field of nitrogen making machines, in particular to an efficient molecular sieve adsorption type nitrogen making machine. The device comprises a reaction cylinder, and an inner cylinder is fixedly connected to the interior of the reaction cylinder. The conical filter plate in the treatment mechanism is in a big-end-down shape, impurities in gas can be effectively filtered out, the unique shape of the conical filter plate can guide the impurities to slide to the flow guide groove along the inclined face, then the impurities are collected in a centralized mode through the collecting cavity, the impurities are prevented from entering the inner cylinder to affect the performance of the molecular sieve, and the purity of gas treatment is guaranteed; the nitrogen generation efficiency and quality are improved; moreover, the driving motor drives the conical filter plate to rotate, so that the gas treatment efficiency and quality of the nitrogen making machine can be remarkably improved, the contact frequency of the surface of the conical filter plate and impurities in the gas is greatly increased in the rotating process, and the impurity intercepting effect is remarkably enhanced; and meanwhile, the impurities are promoted to move towards the edge of the filter plate and slide to the diversion trench along the inclined surface due to the centrifugal force.

This disclosure provides a motion planning method, apparatus, computer device, and storage medium for robots, applied to each robot in a robot swarm; each robot maintains its own local factor graph; the local factor graphs maintained by the multiple robots constitute a global factor graph; the method includes: in response to a state update event corresponding to the current robot being triggered, determining a trigger domain, and determining a replanning subnet from the current global factor graph based on the trigger domain; performing message passing processing based on Gaussian belief propagation in the replanning subnet with the goal of reducing the energy change of the local factor graph corresponding to the current robot, to obtain an updated local factor graph corresponding to the current robot; determining the confidence distribution information of the variables corresponding to multiple variable nodes in the local factor graph of the current robot based on the updated local factor graph of the current robot; and determining the motion replanning result of the current robot based on the confidence distribution information.

The invention relates to a precious metal-COF composite material and a preparation method and application thereof.The composite material comprises a COF-1 carrier and precious metal, the precious metal is in coordination connection with carboxyl in the COF-1 carrier to form a structure with the structural formula shown in the formula (I), the precious metal serves as a connecting node to be in bridge connection with the COF-1 carrier, R1 and R2 are alkane chains respectively, and R2 and R3 are alkyl chains respectively. M is noble metal. The noble metal-COF composite material prepared by the method has dual functions of low-temperature efficient adsorption and high-temperature catalytic oxidation, and when the noble metal-COF composite material is used for treating organic amine, the organic amine can be selectively captured at a low-temperature stage and is efficiently and highly selectively catalytically oxidized into harmless products such as nitrogen and the like at a high-temperature stage, so that harmlessness and recycling of the organic amine are realized.

The utility model relates to the technical field of phosphorus removal agents, and discloses an efficient phosphorus removal agent reaction device which comprises a reaction box, a processing box is fixedly connected to the top of the reaction box, rotating discs are rotatably connected to the inner walls of the two sides of the processing box, extension columns are fixedly connected to the sides, close to each other, of the two rotating discs, and the extension columns are fixedly connected to the top of the reaction box. A connecting column is fixedly connected to the sides, close to each other, of the two extending columns, a beating roller is fixedly connected to the outer portion of the connecting column, a first motor is fixedly connected to one side of one rotating disc, pulling rods are rotatably connected to the outer portions of the extending columns, and a screen is rotatably connected to the bottoms of the two pulling rods; and an elastic component is mounted at the bottom of the screen. According to the utility model, the dephosphorization agent is prevented from caking through the rotation of the beating roller, and the reaction efficiency is improved. The extension column drives the pull rod to move to push the screen to filter sewage and generate vibration, so that the screen is effectively prevented from being blocked, and the filtering effect is improved.

The application provides a material improvement system and method for coal injection of converter flue gas vaporization, and belongs to the field of metallurgical energy saving and environmental protection, wherein the material improvement system for coal injection of converter flue gas vaporization comprises a pulverized coal injection unit, a limestone powder injection unit and a cyclone dust removal unit connected with the pulverized coal injection unit and the limestone powder injection unit; the cyclone dust removal unit comprises a cyclone dust collector, and a fine particle injection port and a coarse particle recovery port are arranged on the cyclone dust collector. The application adds the cyclone dust removal unit to introduce the pulverized coal into the cyclone dust collector for treatment, and simultaneously adds the limestone powder injection unit to separate the large particles and the small particles in the mixture of the pulverized coal and the limestone powder by the cyclone dust collector, so that the large particles are used for blast furnace coal injection, and the small particles enter the converter coal injection system, the particle size of the pulverized coal and the limestone powder entering the converter coal injection system is optimized, the kinetic condition of the reaction is improved, the efficient conversion of the pulverized coal in the flue gas is realized, and the waste of the pulverized coal resources is reduced.

The utility model discloses a VOC (volatile organic compound) photocatalysis device for industrial waste gas treatment. The VOC photocatalysis device comprises a treatment bin, a support frame, a sewage discharge channel, an air blower, a valve, a filter plate, an activated carbon plate, a fixed frame, a spraying mechanism and a catalysis mechanism, the treatment bin is installed at the top of the supporting frame, an air inlet is formed in one side of the treatment bin, an air blower is installed on one side of the air inlet, and an air outlet is formed in the top of the treatment The blowdown channel is welded on the side wall of the treatment bin, a valve is arranged at the communication part of the blowdown channel and the treatment bin, and a blowdown port is formed in the bottom of the blowdown channel; the fixing frame is mounted in the treatment bin; a filter plate and an activated carbon plate are fixedly mounted at the bottom of the fixing frame; the catalytic mechanism is positioned at the top end of the fixed frame; according to the utility model, the efficient decomposition and purification of waste gas are realized, and the discharged gas is ensured to meet the environmental protection standard.

The invention discloses an ultra-fast protection method for a distributed control system, the system adopts a star-shaped connection topological structure, a main node unit comprises an MCU unit and a main FPGA unit, the main node unit comprises an MCU unit and a main FPGA unit, and the MCU unit and the main FPGA unit are connected with each other. The main FPGA unit comprises a communication coding protection processing unit, a data interaction unit, a protection configuration unit, a protection output unit and a multi-path main communication interface; the system can comprise a plurality of slave node units, and each slave node unit comprises a slave FPGA unit and a slave communication interface corresponding to the master communication interface. According to the invention, the original communication channel in the distributed control system is utilized, the whole system is protected more quickly in real time through the design of a communication protocol and a protection strategy, and when any node in the distributed control system fails, the super-fast protection of the whole system is realized, and further expansion of the failure is avoided. Meanwhile, the control method can be flexibly adjusted according to different application requirements, balance between rapid protection and high availability is achieved, and therefore the control method has wider applicability.

The utility model relates to related technical field of tunnel construction support especially, a kind of mobile support for tunnel construction lighting, including base, the upper surface of the base is fixedly installed with stand, the outer ring of the stand is equipped with fixed support plate, the one end of the stand is equipped with bottom plate, the upper surface of the bottom plate is fixedly installed with guardrail, the both sides surface of the support plate is all set with sliding slot, the one end sliding connection of the sliding slot has slider.This mobile support for tunnel construction lighting combines lighting support with engineering vehicle, for example, loader, pick-up truck, special construction vehicle, by installing lighting support on mobile vehicle, plus the flexible adjustment of support, and the guardrail that can be stood by construction personnel, so that construction personnel can be in construction process, always keep illuminated state, provide "vehicle movement, accurate coverage, efficient response" dynamic lighting solution for tunnel construction.

The utility model discloses a kind of storage device of potassium hydroxide, including storage container, KOH input port, inert gas input port, circulating pump system, observation port, sealing unit, cooling unit and control module are equipped on storage container;The control module is connected with metal ion concentration sensor, temperature sensor, flow sensor and pH monitor;The control module is used to collect the above sensor data, controls circulating pump system and cooling unit operating state, adjusts soft water supply flow, and triggers early warning when parameter is abnormal, simultaneously, operating data is uploaded to remote platform.

This invention discloses a method for synthesizing geranialdehyde, comprising the following steps: Citral undergoes an isomerization reaction under the action of a catalyst; after the reaction, a post-treatment is performed to obtain a product rich in geranialdehyde; the catalyst includes a noble metal catalyst and an organophosphorus ligand; the noble metal catalyst is a palladium salt. This preparation method can effectively realize the conversion of nerol to geranialdehyde, and the reaction process generates relatively little waste, is environmentally friendly, fully utilizes the raw materials, and produces no waste gas.

The invention discloses an abnormal region detection method based on a point location multi-temporal image set, and the method comprises the steps: collecting multi-temporal core data according to a detection demand, and generating a point location multi-temporal image set through data registration; establishing a normal fluctuation model based on the point location multi-temporal image set, and marking suspected abnormal point locations; calculating the point location anomaly degree through an anomaly clustering algorithm, and recognizing an abnormal point location cluster; constructing an energy function, identifying an abnormal region boundary, and preliminarily identifying an abnormal region range; combining the abnormal point position cluster and the abnormal region boundary to construct a diffusion region model to predict the diffusion trend of the abnormal region; according to the region boundary and the diffusion trend, determining whether the point locations in the region conform to the abnormal features, and determining a final abnormal region; and integrating detection results, and generating an abnormal area report containing abnormal information, a visual chart and suggested measures. The method aims at solving the problems that a traditional method is difficult to accurately capture abnormal dynamic evolution, the fusion feature adaptability is poor, and diffusion trend prediction is inaccurate.

The invention discloses a current collector with a U-shaped metal sheet and a preparation method of the current collector, and relates to the technical field of batteries. The current collector comprises an organic film, and U-shaped metal sheets are arranged at the two corresponding ends of the organic film; the opening end of the U-shaped metal sheet wraps the organic film to form a composite body, and metal layers are arranged on the upper surface and the lower surface of the composite body. The preparation method of the current collector comprises the following steps: step 1: (1) coating the U-shaped opening end of the U-shaped metal sheet with a conductive adhesive; (2) bonding and curing two ends of the organic film and the opening end of the U-shaped metal sheet respectively to obtain a composite metal sheet base film; and 2, plating metal layers on the upper surface and the lower surface of the composite metal sheet base film to obtain the current collector. The current collector prepared by the method has good resistivity and tensile strength.

The invention discloses a multi-field control pyrolysis reactor which comprises a lifting pipe at least provided with a preheating section and a rapid pyrolysis section, a reaction channel is formed in the lifting pipe, a carrier gas inlet is formed in the lower end of the preheating section, a material inlet is formed in the preheating section, and a material outlet is formed in the rapid pyrolysis section; the carrier gas inlet and the material inlet are respectively communicated with the reaction channel; the guide pipe penetrates through the lifting pipe and is positioned in the reaction channel, and a plurality of guide pipe gas outlets with different gas outlet directions are formed in the guide pipe. The multi-field control pyrolysis reactor provided by the invention can realize regulation and control of a temperature field, a velocity field and a reaction atmosphere in a reaction process, optimizes a pyrolysis process, and improves product yield and quality.

The invention discloses a method for synthesizing N-methyl-piperidine ethanol through reductive amination and application, and the method comprises the following steps: S1, mixing 2-piperidine ethanol as a reaction substrate with formaldehyde in the presence or absence of a solvent, adding a catalyst, introducing hydrogen, and reacting at the reaction temperature of 60-200 DEG C and the hydrogen pressure of 1.0-5.0 MPa to prepare a reaction solution containing a product, wherein the molar ratio of the 2-piperidine ethanol to the formaldehyde is 1: (1.1-1.5), and the catalyst is a NiZn / Al2O3 catalyst; s2, after the catalyst is recovered, when the solvent exists, the reaction liquid is subjected to reduced-pressure solvent recovery and then subjected to reduced-pressure rectification, and when the solvent does not exist, the reaction liquid is subjected to reduced-pressure rectification; and collecting fractions at 92-94 DEG C / 2 kPa in vacuum rectification to obtain the N-methyl-piperidine ethanol. The method has the advantages of high atom economy, green and environment-friendly production process, high yield and high selectivity, and is suitable for industrial large-scale production of N-methyl-piperidine ethanol.

The utility model discloses a screw assembly and a double-screw extruder for a reactive melt-blowing process, the screw assembly comprises two screws which have the same structure, rotate in the same direction and are meshed with each other, and each screw consists of a mandrel and a thread element; one end of the core shaft is a feeding end, the other end of the core shaft is a discharging end, and the core shaft can rotate under the action of external force; the threaded element is arranged on the mandrel in a sleeving mode and can rotate along with the mandrel. The screw assembly comprises a feeding section, a reaction section and an extrusion section which are connected in sequence, and the types, the leads and the lengths of internal thread elements in all the sections are reasonably arranged; therefore, conveying of low-viscosity raw materials, initiation of polymerization reaction, macromolecule growth and mixing, conveying and extrusion of high-viscosity polymerization products can be rapidly achieved in a continuous process, and a continuous polymer melt which is stable in pressure, constant in flow and easy to draw and thin is provided for a subsequent spinning assembly.

The utility model discloses a laser cutting welding device, and particularly relates to the technical field of laser welding, the laser cutting welding device comprises an operation table, the two sides of the upper end of the operation table are fixedly connected with first sliding rails, the upper sides of the two first sliding rails are jointly connected with a support in a sliding mode, the lower end of the support is fixedly connected with a second sliding rail, and the lower side of the second sliding rail is connected with a sliding block in a sliding mode. The lower end of the sliding block is fixedly connected with a rotating assembly, the lower side of the rotating assembly is fixedly connected with a moving assembly, and the lower side of the moving assembly is fixedly connected with a fixing assembly. By arranging the rotating assembly and the moving assembly, accurate adjustment of the position of the laser head can be achieved, meanwhile, the laser head can conduct cutting and welding along an arc shape, the machining precision is improved, workpieces of various shapes and sizes can be flexibly handled, the laser head can be replaced by arranging the fixing assembly, and the machining efficiency is improved. And the cutting function and the welding function are quickly switched, and the production efficiency is improved.

This utility model discloses an eBike vehicle infotainment screen and IoT device, including a vehicle housing, a main control board, and a display screen assembly. The main control board integrates a vehicle main control chip, a Bluetooth module, a 4G module, a GPS module, a magnetic compass module, and a vehicle control interface. The Bluetooth module is used for communication with a mobile app, the 4G module is used for connecting to an IoT platform, the GPS module is used for positioning, and the magnetic compass module is used for direction recognition. The display screen assembly is electrically connected to the main control board and is used to display operating parameters such as motor status, battery information, navigation route, and weather. The vehicle control interface is connected to multiple components of the vehicle through control signal lines, enabling unified control of the motor, lights, battery lock, millimeter-wave radar, taillights, vibration motor, horn, fingerprint recognition module, and battery compartment. This utility model features high structural integration, rich functionality, and improves the overall control efficiency of the vehicle and the user interaction experience.

This invention provides a microfluidic device and method for enhancing high-viscosity, highly exothermic reactions. The microfluidic device comprises a reaction channel with two inlet channels and a mixing channel. The reaction channel has two inlets and one outlet. A cooling channel surrounds the entire reaction channel, forming a sleeve with two inlets and one outlet. The microreactor has a rectangular cross-section. The front section of the reaction channel is a baffle structure with intervals, while the rear section is a spiral mixing structure. This microchannel structure achieves highly efficient mass and heat transfer during glycerol nitration, providing a safe, efficient, and easily scalable microfluidic device, offering a universal solution for industrial processes such as organic synthesis, drug preparation, and highly hazardous exothermic reactions.

The application discloses a countercurrent submerged hot steel slag treatment coupled industrial flue gas carbon capture system and method, and belongs to the technical field of industrial solid waste and waste gas resource treatment. The system comprises a hot stewing pool, a slag cover, a matrix type water and gas distribution system, an industrial flue gas supply unit, a micro-nano bubble generating device, a waste heat recovery device and a control unit. The method is that the matrix type water and gas distribution system is used to pass cooling water and industrial flue gas water solution rich in micro-nano bubbles into hot steel slag from the pool bottom in a region-by-region and time-by-time manner, and countercurrent submerged cooling stewing slag and carbonation carbon fixation reaction are sequentially carried out. The application solves the problems of poor safety, low resource recovery rate and high carbon capture cost of the traditional hot stewing process, and provides a safe, efficient and low-cost steel slag and flue gas collaborative treatment solution.

The application discloses a Cu-X / Al2O3+Y / SiO2 catalyst and a preparation method and application thereof in alcohol aldehyde catalytic coupling for preparing high carbon alcohol, the Cu-X / Al2O3+Y / SiO2 catalyst is composed of a Cu-X / Al2O3 component and a Y / alkali metal modified SiO2 component, wherein X is one of Ni, Co, Mo, Au and Ag; Y is one of La, Ce and Y rare earth metal; and the catalyst component mass percentage is as follows: Cu-X / Al2O3 metal active component, 40-80%; Y / alkali metal modified SiO2 basic active component, 20-60%. The application adopts an ethanol and low alcohol aldehyde mixed feed system, and matches the catalyst system made of a multi-metal active component and a hydrophobic composite carrier, so that the ethanol conversion rate and C6+ high carbon alcohol selectivity can be remarkably improved, and the application has good technical economy and wide market prospect.

The application relates to a multi-phase synergic high-strength high-elasticity polyester elastomer and a preparation method and application thereof, and belongs to the technical field of high polymer material synthesis. The application comprises the following steps: weighing binary acid I, binary alcohol and a hydroxyl-terminated polyether, and performing esterification reaction on terminal carboxyl groups and terminal hydroxyl groups to form an esterification product; polyester oligomers are prepared by performing ester exchange reaction between the terminal hydroxyl groups of the esterification product; caprolactam is added to generate aminocaproic acid by ring-opening reaction, and meanwhile, the aminocaproic acid and part of the polyester oligomers perform esterification reaction to form a multi-component oligomer with terminal amino groups and terminal hydroxyl groups; binary acid II and a solvent are added, and salt formation reaction is performed on the terminal carboxyl groups and the terminal amino groups at low temperature; at high temperature, three forms of polycondensation reactions, i.e., amide bond formation by dehydration of the ammonium salt, ester bond formation by dehydration of the terminal carboxyl groups and the terminal hydroxyl groups, and ester bond formation by dehydration of the binary alcohol between the terminal hydroxyl groups, are synchronously performed to prepare a multi-block polyester elastomer. The hydrogen bond interaction is strengthened, and the tensile strength, tensile modulus and elastic recovery capacity of the elastomer are improved.

The application provides an automatic data governance method and system based on a multi-modal large model, comprising: collecting multi-source heterogeneous industrial data and performing standardization processing to form standardized multivariate time series data; constructing a process knowledge base, performing semantic embedding coding on process knowledge text, and storing; constructing and fine-tuning a KTSF multi-modal large model, fusing process knowledge semantics and multivariate time series data through a cross-modal attention mechanism to generate joint semantic representation; based on the prediction of the KTSF multi-modal large model, outputting the residual error between the actual data, dynamically identifying abnormal data; and performing attribution analysis; based on the attribution result, calling the KTSF multi-modal large model to generate a repair value, and intelligently correcting the abnormal data; designing a quality evaluation and feedback learning module for calculating data quality scores and driving model incremental updating; designing a rule self-learning module for automatically refining governance rules through cluster analysis and updating the knowledge base.

This invention relates to the field of information display technology, and discloses a conference screen sharing method and related equipment based on frame buffering and incremental updates. The method includes managing and processing the frame buffer resources of a remote host and a local host; using incremental update technology, the remote host and local host identify the changed parts of the screen content after frame buffer resource management and processing, and generate image difference information; and transmitting the image difference information between the remote host and the local host to complete the conference screen sharing based on frame buffering and incremental updates. This invention, by managing and processing the frame buffer resources of the remote host and local host, can effectively integrate and optimize the utilization of screen resources; the use of incremental update technology allows the system to identify and transmit only the changed parts of the screen content, rather than the entire screen image. During the conference screen sharing process, only the changed image areas are captured and transmitted, thereby significantly reducing the amount of data that needs to be transmitted.

The invention provides a multi-modal data security sharing method and system, and relates to the technical field of computer science, and the method comprises the steps: obtaining a traditional database; constructing a database agent according to a traditional database; the method comprises the following steps: constructing a multi-modal metadata semantic space through a database agent; the method comprises the following steps: screening out participants of an adaptive task through a multi-modal metadata semantic space; performing cross-modal retrieval on the participants through an AI ready-oriented multi-modal analysis query language query method to obtain a retrieval result; locally constructing a neural network model at a participant through an adaptive machine learning modeling mechanism; according to the domain knowledge base and the knowledge graph, updating hyper-parameters and retrieval results of the neural network model; performing credible convergence on the updated neural network model through a credible execution environment module; and based on a credible convergence result, sharing the multi-modal data to each participant through a database agent.

This utility model belongs to the field of switch technology, specifically a silent tactile switch, including a base and a top cover. The base is provided with a first contact and a second contact, both of which extend into the interior of the base. A dome switch is mounted on the base, including a connecting part and a contact part. The contact part is provided with a moving contact that mates with the second contact. The top cover is provided with a button that extends through the top. A silicone pad is provided between the button and the dome switch. The bottom end of the silicone pad has a protrusion that contacts the dome switch, and also has a vent hole and a positioning protrusion on the bottom circumference. The top of the base is provided with a positioning groove that mates with the positioning protrusion. The top cover and the base are riveted together. Through the above structural design, this utility model can effectively reduce pressing and rebound noise, improve the quietness of operation and response sensitivity, and extend the service life.