45results about How to "Ensure high efficiency" patented technology

The invention provides a lightweight back-up and efficient restoration method of health block chain data encryption keys.Body area networks achieve physiological parameters acquisition of healthy body health, health block chains are produced by a group of credible IT devices appointed by multiple health institutions and used for receiving and storing health data of the body area networks, the health block chain data encryption keys are produced by utilizing a fuzzy technology fuzzy vault and physiological signals acquired by the body area networks, human physiological data acquired in different time periods is encrypted by utilizing different data encryption keys and then is saved in the block chains of the IT devices without storage of historical data encryption keys; historical secret keys are restored by utilizing the health data acquired by the body area networks in real time.The lightweight back-up and efficient restoration method integrates the body area networks with the health block chains, avoids huge burden brought by secret key splitting related in a traditional secret key restoration method and safe storage and retrieval of shadow secret keys and greatly reduces management complexity of the health block chain data encryption keys.

The invention discloses a flight airport scene operation optimization method considering runway port waiting time and belongs to the flight airport scene optimization technology field. The method comprises the following steps of firstly, establishing a MAGMO model and simultaneously optimizing slipping time and runway port waiting takeoff time; then, designing an RSS strategy so as to distribute paths for all the flights and distributing launch time for a departing flight; simultaneously, according to a waiting node, distributing a strategy HNAS, selecting the mode in the path for the flight and distributing waiting time so as to obtain an optimal solution to double target airport scene optimization. Priorities of the flights, fairness among flights and an influence to environment are fully considered, and safety, orderliness and high efficiency of a scene flight flow are ensured. By using the method of the invention, safety of the whole flights can be increased and flight conflicts can be effectively avoided to some extent. Simultaneously a potential safety hazard, fuel oil consumption and environment pollution brought by long time waiting of a lot of flights can be prevented.

The invention discloses a creation method of an integrative full-flow elaborate intelligent EPR (Electronic Public Relation system) working platform. The creation method comprises the following steps: collecting working contents associated with the integrative management and control of an enterprise; splitting the working contents, and analyzing to obtain the necessary process and the necessary detail of the working contents of a preset item of business; carrying out logical thinking decomposition on the necessary process and the necessary detail to obtain minimum logic cell units; converting the minimum logic cell units into corresponding software logic code units one by one; arranging the working contents of the preset item of business into a plurality of reality work flows, and converting the reality work flows into flow frame codes; and filling the software logic code units into the flow frame codes. Software is used for replacing people to carry out a work logic thinking process, manual errors are eliminated, the real time and the precision of process and detail management and control can be realized, working efficiency is higher, and the updating and upgrading, the function perfection and the personalized adjustment of a software system become free and simple.

The invention discloses an intelligent dish charging method, device and system, a spoon and a card swiping machine. The system is characterized in that after the dish taking spoon receives a dish taking starting command, when each dish is taken, price information of the dishes is obtained for a service plate for containing the dishes and sent to the card swiping machine; when the spoon receives the dish taking stopping command, a payment command is sent to the card swiping machine; the card swiping machine receives and stores the price information, sent by the dish taking spoon, of the one or more dishes; after the payment command sent by the spoon is received, total money is calculated according to the price information, sent by the spoon, of the one or more dishes, and the price information of each dish and the total money are displayed to a dish buyer. According to the method, the device, the system, the spoon and the card swiping machine, manual calculation and manual input are not needed, time can be saved, errors can be avoided, and the accuracy and the high efficiency are guaranteed.

The invention discloses an automatic operation and maintenance system based on an acquisition cluster. The automatic operation and maintenance system is divided into a display layer, a function layer,an acquisition layer and a resource layer from top to bottom. The display layer is used for issuing an operation instruction to the functional layer. The functional layer calls various acquisition nodes to complete automatic configuration, daily inspection and fault inspection on software and hardware resources of the resource layer, the acquisition layer configures a multi-node acquisition cluster, acquires data of the resource layer and feeds back an acquisition result to the functional layer, and the resource layer is all software and hardware resources managed by the automatic operation and maintenance system. According to the automatic operation and maintenance system, customized configuration and inspection tasks are formed according to different configuration and inspection scenes,and automatic collection and automatic analysis of index parameters and automatic generation of inspection reports are achieved. According to the invention, the good load capacity for a large numberof acquisition tasks is ensured by means of the coordinated work among a plurality of acquisition nodes, so that the reliability and the high efficiency of the acquisition process are ensured.

The present invention provides a house information management method and a server, wherein the house information management method comprises: receiving the first information of a house provided by a first client from a first client terminal, the first information used to indicate transaction information of the house; reviewing the first information according to the second information of the house provided by a house property management company, the second information used to indicate the transaction information of the house verified by the property management company to the first client; and presenting the successfully verified first information of the house under the condition that the first information is successfully verified.

The invention discloses a battery pack based on a Peltier effect and heat pipe cooling and a heat management method thereof. A thermoelectric cooler is disposed on the upper part of a battery module in a battery pack case. Heat conduction gaskets and heat conduction fins having high thermal conductivity and the batteries form a heat conduction path of battery module-heat conduction gaskets-heat conduction fins-heat conduction support plate and a heat conduction path of battery module-heat conduction gaskets -heat conduction fins- heat conduction support vertical plate-heat conduction support plate. Different working modes can be performed in a high-temperature environment, a low-temperature environment and a normal environment. Advantages of fast thermal response, high thermal conductivity, accurate temperature control, no noise and the like are achieved. The battery individual modules in the battery module are increased in heat transfer coefficients when uniformly heated, thereby further ensuring the stability, reliability and high efficiency of the battery operation. The battery pack is compact in overall structure and small in size, and provides a space for the structural arrangement of the whole vehicle.

The invention discloses a gridded intelligent linkage type campus security management integrated system which relates to the field of collaborative management. The gridded intelligent linkage type campus security management integrated system comprises the components of a security monitoring system, a security linkage and emergency information service platform, and an emergency handling system. The security monitoring system obtains dynamic data of security information. The security linkage and emergency information service platform performs statistical analysis determination on the received dynamic data of the security information and then generates an alarm. The emergency handling system notifies related responsible persons, contacts with a security mechanism and generates an emergency notification according to the received alarm. The gridded intelligent linkage type campus security management integrated system realizes fine full-process management, all-coverage security management, integration and linkage of various kinds of security systems, automation and streamlining of security management operation, thereby ensuring high-efficiency and convenient management.

The invention relates to a human body key point detection method and device, an electronic device and a storage medium, and the method comprises the steps: responding to the detection that an image contains a human body, extracting two-dimensional coordinate data for marking the positions of human body key points in the image, and obtaining 2D pose data; and performing human body key point featurefusion on the 2D pose data and the depth data corresponding to the human body key point position to obtain 3D pose data for identifying the human body key point position. According to the invention,accurate human body key point detection can be realized when a human body is in a motion state.

The invention proposes a cloud computing-based android database security protection method and system. A security mechanism of database protection is realized based on a cloud terminal by virtue of a cloud computing technology; and three-layer protection of a database is realized through a user bio-feature identification-based authentication method, an SQL injection protection method and a hybrid encryption algorithm. According to the cloud computing-based android database security protection method and system, the deficiencies of lack of an SQL injection detection mechanism and difficulty in ensuring performance and efficiency in an existing android platform database protection technology are made up for and the security protection is realized based on the cloud terminal, so that the load pressure of a local mobile terminal is effectively reduced, the device performance is ensured, the security protection of the android database is perfecter and more reliable, and the high efficiency and stability of the security protection are ensured.

The invention provides a safe and efficient data sharing method in a mobile cloud computing system, which comprises the following steps of: 1, initializing a system, and generating a public parameter,a main key and other entity keys by a trust center; 2, encrypting shared information: a data owner and a cloud computing server jointly encrypting the shared information; 3, generating a user secretkey, wherein a trust center generates the secret key for the user; 4, verifying the integrity of the shared information, and calculating the integrity of the shared information by the cloud computingserver; and 5, decrypting the shared information, and if the shared information is complete, downloading the ciphertext from the cloud storage server by the user and decrypting the ciphertext. According to the method, the operation efficiency and the communication efficiency of the mobile cloud computing data sharing system can be improved, and meanwhile the safety and the privacy in the data sharing process are guaranteed.

The invention discloses an unmanned aerial vehicle for air route survey of air traffic. The unmanned aerial vehicle comprises an unmanned aerial vehicle head, an unmanned aerial vehicle body, a pair of side wings, a first balance wing, a second balance wing and a balance tailstock, wherein a radar height sensor, a Beidou positioning sensor, an ultrasonic detector and an infrared detector are arranged in the unmanned aerial vehicle head; a storage battery and a signal match are arranged in the unmanned aerial vehicle body, and an electric quantity detector is arranged below the unmanned aerialvehicle body; an information processor is arranged next to the electric quantity detector, and a command locker is arranged next to the information processor; a signal receiver is arranged below the command locker, and a wireless charging receiver is arranged below the signal receiver; and a positioning camera is arranged next to the wireless charging receiver, and a positioning supporting foot isarranged at the lower end of the unmanned aerial vehicle body. The unmanned aerial vehicle can maintain good stability and balance performance when encountering obstacles, severe weather and other special environments, self-charging can be realized, a locking mechanism is provided, instructions cannot be input from the outside during locking, and the situation of falling caused by the power consumption of the unmanned aerial vehicle when the unmanned aerial vehicle is instructed by the outside can be avoided.

The invention discloses a commodity information obtaining system in viewed videos based on audience operations. The system comprises an image obtaining module used for receiving a pre-purchase operation instruction of a user and obtaining a current image of a video program viewed by the user in response to the pre-purchase operation instruction; a preprocessing module used for preprocessing the current image to obtain a target image; a commodity search module used for searching target commodity information corresponding to image information similar to the target image; and a commodity display module used for displaying the target commodity information to the user. Therefore, when the user views the video, the user can send the operation instruction via a remote controller or a mobile phone or a tablet computer and other user terminals once meeting admired commodity in the video screen and can obtain the commodity information and a purchase link, which is efficient and convenient, the commodity is searched directionally, and the accuracy and high efficiency of information search are ensured.

The invention discloses an acid dye continuous pad dyeing method for polyamide woven tapes. The acid dye continuous pad dyeing method sequentially includes steps of 1, pretreating the polyamide woventapes; 2, drying the polyamide woven tapes by infrared rays or hot air; 3, simultaneously carrying out pad dyeing by acid dye liquor and color fixing agents; 4, carrying out steaming dyeing and primary color fixing treatment; 5, carrying out hot washing; 6, carrying out secondary color fixing treatment; 7, carrying out hot washing; 8 carrying out drying; 9, dropping tapes. The acid dye continuouspad dyeing method has the advantages that the polyamide woven tapes have bright colors by the aid of acid dye steaming processes and color fixing one-bath dyeing schemes, the dye depths of the polyamide woven tapes can be effectively increased, the acid dye continuous pad dyeing method is good in deep dyeing property in polyamide woven tape dyeing procedures, and the polyamide woven tapes can be dyed with rich dark colors by the aid of the acid dye continuous pad dyeing method; pad dyeing is carried out on the polyamide woven tapes by acid dye, combined effects can be realized by an early color fixing scheme and a late color fixing scheme, the dye and the woven tapes are firmly combined with one another by chemical bonds, and the problem of poor color fastness of existing polyamide woven tapes after burning-preventive finishing is carried out on the existing polyamide woven tapes can be effectively solved by the aid of the acid dye continuous pad dyeing method.

Provided are an automatic leakage detecting device of a water heater or a wall-hung stove and an operating method thereof.The automatic leakage detecting device of the water heater or the wall-hung stove comprises the water heater, wherein a ball valve, a filter, a pressure regulating valve, a first waterway pressure switching valve, a second waterway pressure switching valve and a pressure transmitter are sequentially arranged on a water inlet pipe of the water heater, and a water outlet valve is arranged on a water outlet pipe of the water heater.A pipeline between the pressure regulating valve and the first waterway pressure switching valve is communicated with a water-draining pressure-relief pipe, a pressure gauge is arranged at the communication position, and a pressure-relief valve and a pressure relief and regulation valve are sequentially arranged on the water-draining pressure-relief pipe.A pipeline between the first waterway pressure switching valve and the second waterway pressure switching valve is communicated with a servo pressurizing mechanism.The pressure transmitter is connected with a PLC.An electric actuator is arranged on the ball valve, the pressure regulating valve, the first waterway pressure switching valve, the second waterway pressure switching valve, the water outlet valve, the pressure relief and regulation valve and the pressure-relief valve respectively.The automatic leakage detecting device can achieve automatic detection and full-automatically judge the qualified or unqualified situation and has the advantages of being accurate in testing and good in reliability.

Embodiments of the present invention relate to a method and system for counting the number of animals, and a storage medium. The method comprises: dividing the area to be measured into a plurality ofpieces to be measured, at preset time interval, the remote sensing image of each area to be measured is acquired, and comparing the remote sensing image of the area A to be measured at the previous time with the remote sensing image of the area A to be measured at the current time, so that difference image is obtain, and so on, after obtaining multiple difference images, On the one hand, the technical scheme of determining the target quantity according to the change quantity and the initial quantity of the animals in the region to be measured by analyzing each difference image avoids the technical drawbacks of consuming manpower and material resources in the prior art when the statistics are carried out manually, and realizes the technical effects of saving the cost and improving the efficiency; On the other hand, the invention avoids the technical drawbacks that the prior art is easy to be influenced by human factors when carrying out the quantity statistics, which leads to the inaccurate statistical results, and realizes the precision of the quantity statistics of animals.

The invention aims to provide a database access method and device. The method comprises the steps of creating a slave account of a database and presetting an access permission of the slave account; when a user needs to access the database through the slave account, receiving an access request used for accessing the database through the slave account and sent by user equipment; performing analysis and filtration processing on the access request based on the access permission to obtain a filtered SQL statement, and sending the filtered SQL statement to a database service device; and receiving data information returned by the database service device based on the filtered SQL statement, and sending the data information to the user equipment. By utilizing the created slave account of the database and the access permission of the slave account, access requests of different users are met, the risk of leakage of the data information of the database possibly caused by sharing or changing a master account of the database is avoided, the security and high efficiency of accessing the data information of the database are ensured, and the security of the master account of the database is further ensured.

The invention discloses an intelligent recommendation and dynamic optimization method for a deep roadway support scheme, and the method comprises the steps: carrying out the correlation analysis of engineering geological parameters of a deep supported roadway, building a sample database, and dividing support levels according to the thickness of a loose circle; then sequentially establishing a loose circle thickness prediction model based on random forest regression, multiple linear regression and a support vector machine, and selecting an optimal prediction model through comparison of evaluation indexes of the prediction model; predicting the support level of the roadway to be supported by adopting the optimal prediction model, intelligently recommending a support scheme, inverting the engineering geological parameters after the scheme is implemented through a roadway peripheral displacement monitoring technology and a rock mechanics inverse analysis method, readjusting the support level and dynamically optimizing the support scheme. The method is easy to implement and easy and convenient to operate, the deep roadway engineering geological conditions can be comprehensively and specifically considered, the supporting design scheme is reasonably and rapidly recommended, and supporting mode parameters are dynamically adjusted in real time.

The invention discloses an automatic assembling system for an automatic compensated level and belongs to the technical field of automatic assembling. The automatic assembling system comprises an upper fixed supporting disc, a lower rotating supporting disc driven by a rotating shaft, multiple clamps and a base body feeding mechanism. Each clamp comprises a radial outer side stop block fixedly arranged on the upper side of the groove bottom face of a clamp installation groove, a V-shaped block correspondingly arranged on the radial inner side of the radial outer side stop block, and a clamp air cylinder arranged in the radial direction of the lower rotating supporting disc and driving the V-shaped block, wherein the clamp air cylinder is arranged on the upper fixed supporting disc. The base body feeding mechanism comprises a base body pneumatic sliding table, a base body lifting air cylinder driven by the base body pneumatic sliding table, a lifting transverse plate driven by the base body lifting air cylinder and two base body air claws arranged on the lifting transverse plate, wherein the base body pneumatic sliding table is arranged above the lower rotating supporting disc in a spaced manner. The automatic assembling system can be used for achieving automatic assembling of the level, and therefore the production efficiency of an enterprise is improved, and the labor intensity is lowered.

The invention discloses a method, a device and a system for transmitting power business information, and relates to the technical field of power communication. The method, the device and the system for transmitting the power business information are mainly used for solving the problems of bad business quality, data safety and instantaneity when a wireless public network is applied to perform the power information transmission. The main technical scheme of the method, the device and the system for transmitting the power business information is: a sending party of the power business information receives power business information sent by a local information aggregation node, modulates and demodulates the power business information, and couples the power business information after performing the modulation and demodulation treatment to a power line for transmission; a receiving party of the power business information decouples and receives the power business information coupled to the power line for transmission, modulates and demodulates the power business information obtained through decoupling, and sends the modulated and demodulated power business information to a zone area information aggregation node, so that the zone area information aggregation node can send the modulated and demodulated power business information to a main power business station through an optical fiber. The method, the device and the system for transmitting the power business information are mainly applied to the process of transmitting the power business information.

The invention discloses a novel high-efficiency and long-life anthraquinone degradation product regeneration catalyst, which uses activated alumina powder as a raw material, uses metal oxides, metal chlorides and pore-forming agents as auxiliary agents, and then uses a peptizer for kneading and molding , the mass percentage of each component is: activated alumina powder 70%-85%, metal oxide 5%-15%, metal chloride 10%-25%, pore-forming agent 0.5%-4.5%, the present invention also A method for making a regenerated catalyst is disclosed. The regenerated catalyst for anthraquinone degradation products prepared by the method uses activated alumina with a high specific surface area and large pore volume as a raw material, and uses metal oxides, metal chlorides and pore-forming agents as active components ( replace the easily lost caustic alkali in traditional catalysts), achieve high dispersion and long-lasting stable curing of metal oxide active components on the carrier, and obtain a high-activity, long-life regeneration catalyst for anthraquinone degradation products, thereby ensuring its regeneration catalysis Efficiency and durability of activity.

The invention discloses a floating type solar distillation desalination apparatus, which comprises a floating seat and a light-transmitting condensation cover arranged on the floating seat, wherein adistillation chamber is formed between the light-transmitting condensation cover and the floating seat, the floating seat in the distillation chamber has a heat absorbing body capable of converting solar energy into heat energy, and a plurality of water flow channels capable of communicating the distillation chamber and the lower water area are arranged on the floating seat in the distillation chamber. According to the present invention, with the apparatus, the water in the lower water area can automatically replenish a small amount of water into the distillation chamber through the water flowchannels by using the water level difference while the heat absorbing body can only heat and evaporate a small amount of the continuous flowing water raw liquid above, ie., the heat absorbing body can rapidly heat and evaporate the water raw liquid entering the distillation chamber under low heat dissipating, such that the heat utilization rate is high, and the distillation desalination effect isgood.

The invention provides a single-station pipe joint press-in machine. The single-station pipe joint press-in machine comprises a rack, an operation table, four trundles, a power supply and a programmable controller; the rack comprises a bearing bracket; the operation table is fixed to the bearing bracket; the operation table forms an operation region; the four trundles are correspondingly installedat the four corner parts of the bottom of the rack; the power supply can be electrically connected with the programmable controller; the single-station pipe joint press-in machine further comprises aclamp device, a punching machine and a glue coating device; the clamp device is installed at the center of the operation table and is used for clamping a bearing housing; the punching machine is installed at the top center of the rack and corresponds to the clamp device; an air pipe is installed at the bottom of the punching machine; the glue coating device is installed on the operation table andis close to the clamp device so as to coat the bottom of the air pipe with glue; and the power supply is used for providing electric energy for the clamp device, the punching machine and the glue coating device. The single-station pipe joint press-in machine provided by the invention can reduce safety accidents caused by human errors, can also guarantee the assembly precision and quality of the air pipe and the bearing housing, improves the production efficiency and guarantees the high efficiency and safety of an assembly step.

The invention discloses a self-propelled high-clearance pineapple flower forcing machine based on PLC control. The self-propelled high-clearance pineapple flower forcing machine comprises a rack, a power system, a transmission system, a spraying system, a PLC control system and a steering system, wherein the spraying system is driven by a push rod motor to lift up and down, the distance between a spray head and a spraying position is adjusted, and the spray head can be adjusted in the horizontal direction to adapt to the change of pineapple planting line spacing; the PLC sets an advancing direction and a speed of a vehicle body, a spraying interval time of the flower forcing liquid, a spraying time of each time, the height of a spray head in the vertical direction and the maximum walking distance of the vehicle body; after the system is started, the flower forcing solution spraying system sprays a flower forcing solution to pineapple seedlings according to preset time intervals along with the constant-speed advancing of the vehicle body; a direct current permanent magnet brushless motor drives a front high land wheel through a front axle assembly; and a hydraulic steering system drives the two front wheel supporting legs to rotate to achieve steering. The machine has the advantages of high mechanization degree, convenience in operation, low cost, time and labor saving, high spraying efficiency, long service life and the like.

A polarizing plate that includes: a polarizer in which the mean width of profile elements (RSm) is 500 to 5000 um and the maximum height of the roughness profile (Rt) is 100 to 1000 nm; an adhesive layer which is formed in a thickness of 250 to 850 nm on at least one surface of the polarizer; and a protective film which is laminated upon the adhesive layer.

The invention particularly relates to a spacecraft multi-port cable automatic test system and method, the system comprises measurement software and a bottom layer controller, and the measurement software is connected with the bottom layer controller through a communication interface; the bottom layer controller comprises a constant current source unit, a constant voltage source unit, a data acquisition unit, a relay switching matrix, an on-resistance test unit, an inter-line capacitance test unit and an insulation resistance test unit, and measurement of various parameters of the cable is completed through each module; the measurement software mainly comprises a parameter configuration module, a conduction test module, an insulation test module, a self-learning module, a manual test module and a result comparison module. The system can automatically measure the electrical performance such as on resistance, insulation resistance, distributed capacitance and the like of various models of cables, can timely and quickly detect equipment cable faults, realizes automation and intelligence of cable detection, ensures high efficiency and reliability of cable detection, and provides effective guarantee for spacecraft development.

The invention provides a gas-steam combined cycle unit synchronous phasing test debugging method. Before first synchronous grid connection of a gas turbine generator, the gas turbine generator is usedto drive a gas turbine main transformer, a main transformer high-voltage side busbar and a steam turbine main transformer for stepping up from zero voltage; and then, synchronous loop check and phasing test are carried out on all synchronous points of the gas turbine generator and the steam turbine generator at one time. The debugging method has a simple operation process, synchronous loop checkand phasing test can be carried out on all synchronous points of the gas turbine generator and the steam turbine generator at one time, the debugging time is greatly shortened, the debugging efficiency is ensured, and the time of the start phase of the whole unit is controllable; the gas consumption of the gas turbine can be saved with many economic benefits; and voltage conduction check is carried out on primary devices such as the steam turbine main transformer and the secondary voltage loop before start of the whole steam turbine, problems can be found out effectively in advance and are timely solved, the potential risk of start debugging of the whole steam turbine later is reduced, and the safety is extremely high.

The invention discloses a tank interlayer low-temperature adsorption device and a working method. The tank interlayer low-temperature adsorption device comprises an adsorbent filling unit, an adsorbent activation assembly and an adsorbent sealing and storing assembly; the adsorbent filling unit comprises a closed whole formed by welding a manhole shell ring, a process seal head, a metal seal plate, a lower connecting flange and an adsorbent filling pipe; the adsorbent activation assembly comprises a heat preservation heating box, an upper connecting flange, a first pipeline, a second pipeline,an inflation stop valve, a vacuum butterfly valve, a vacuum pump and a nitrogen cylinder; and the adsorbent sealing and storing assembly comprises a rupture disk capable of being arranged on an upperpipe opening of the adsorbent filling pipe, a flange plate capable of being arranged on the lower connecting flange, a perforated metal plate capable of covering the upper surface of the flange plate, and a fastener capable of connecting the perforated metal plate, the flange plate and the lower connecting flange. The tank interlayer low-temperature adsorption device is a low-temperature adsorption device integrating an adsorbent activation function and a low-temperature adsorption function, and can ensure that the adsorbent plays an efficient role; and by means of the invention, the vacuum service life of the container interlayer can reach 5 years.

The invention discloses a user behavior-based log filtering method. The method comprises the following steps of 1, dividing a user behavior into multiple sub-behaviors, allocating corresponding weights, obtaining and storing log information of the user behavior through a distributed log collection tool, and extracting and filtering the log information of the corresponding sub-behaviors with the weights lower than a weight threshold; and 2, performing parallel processing on the reserved log information of the sub-behaviors through a utility function, establishing a mapping relationship between user interest degrees and sub-behavior indicators by the utility function, extracting and filtering the corresponding log information of the sub-behaviors with interest degrees lower than an interest degree threshold, reserving the log information of the sub-behaviors preferred by a user, forming an optimized data source of a recommendation result, and storing the optimized data source in a data cluster. According to the method, massive log information can be subjected to secondary filtration, and current demands and interested information of the user can be responded in time, so that the processing efficiency is improved; and the method is easy to expand and has fault tolerance to a certain extent.

The invention discloses a prefabricated laminated slab suitable for laying a floor heating pipeline and a preparation process. According to the prefabricated laminated slab, stirrup reinforcing steelbars are adopted to replace pins, the stirrup reinforcing steel bars and reinforcing steel bars in the prefabricated laminated slab are laid, bound and fixed at the same time, and truss bars in the prefabricated laminated slab are canceled, so that the steel bar laying and binding time in the prefabricated laminated slab is effectively shortened, and the production and machining efficiency of theprefabricated laminated slab is remarkably improved compared with a plug pin manner; the truss ribs are cancelled, so that the production cost of the prefabricated laminated slab is reduced; the stirrup reinforcing steel bars are higher in strength, so that the stirrup reinforcing steel bars are prevented from being broken during on-site assembly construction; the stirrup reinforcing steel bars are simple and reasonable in structural design and can be conveniently bound and fixed to the reinforcing steel bars in the prefabricated laminated slab, and the vertical precision of the upper end of an n-shaped rod is guaranteed; the prefabricated laminated slab is simple and reasonable in structural design, high in preparation implementation feasibility and high in economic practicability, and has potential application and popularization prospects; and the preparation process of the prefabricated laminated slab is simple to operate, and the production and processing efficiency of the prefabricated laminated slab is ensured.