154 results about "Technological system" patented technology

The invention discloses a power electronic networking equipment stability analysis method, system, equipment and medium, and the method comprises the following steps: building a full-system state space model, carrying out the cross validation of the full-system state space model through employing a modal analysis method, an impedance analysis method and a complex torque analysis method, and obtaining the stability of the full-system state space model; obtaining a multi-mode coupling stability analysis result; according to the multi-mode coupling stability analysis result, constructing a power grid s domain node admittance matrix; establishing a virtual power angle dynamic equation of the network-forming converter, and optimizing control parameters according to an evaluation result; an inertia center reference system is adopted, a dynamic interaction model of the synchronous machine and the network-forming converter is established, and dynamic coupling characteristics between devices are analyzed through a relative motion equation. According to the method, the comprehensiveness, the precision and the engineering applicability of dynamic stability analysis of the novel power system are improved through fusion of a multi-dimensional collaborative evaluation framework and an innovative technical system.

The invention provides a method for controlling the precision of an inner molded surface of a cast-in-place slab hung below a net rack, and belongs to the technical field of wind tunnel construction.The method comprises the steps that a C-shaped clamping piece and a sensor system are installed on a net rack lower chord, a monitoring network is established, fatigue characteristic data are analyzed through a minimum cut algorithm, and a load imbalance coefficient is calculated; a high-precision adjustable suspender and a prestress adjusting device are installed to construct a dynamic supporting system, a three-level precision compensation mechanism is established to achieve preventive compensation before construction, real-time monitoring compensation in the construction process and corrective compensation after pouring is completed, and multi-target collaborative optimization is achieved through a dynamic adjusting algorithm and a game optimization model. A complete technical system including fatigue point prediction, load redistribution and precision real-time control is formed, and the technical problem that in the construction process of hanging the cast-in-place slab under the net rack, the plane precision control lacks a systematic dynamic adjustment mechanism is solved.

The invention belongs to the technical field of three-dimensional scanning path planning and industrial automatic detection, and particularly relates to a full-coverage scanning path planning method for a large complex structural part. The revolutionary optimization of the three-dimensional scanning path of the large structural member is realized by constructing a comprehensive technical system of curvature self-adaptive sampling, pose collaborative optimization, a three-stage Weibull motion strategy, real-time collision detection and whole-process efficiency improvement. According to the scheme, geometric feature perception, motion continuity guarantee, algorithm adaptability enhancement and operation safety control are creatively integrated, a technical breakthrough is formed in three dimensions of non-blind area coverage, high motion efficiency and zero collision risk, and meanwhile, through parameterization design and a cross-platform compatible framework, the operation safety is improved. Deployment flexibility and system robustness in an industrial scene are remarkably improved, and a complete solution with high precision, high efficiency and high reliability is provided for automatic detection of a complex curved surface.

The invention discloses a method and a device for predicting and adjusting vertical conveying pressure of an emulsion matrix, which realize gradient release of kinetic energy of fluid and suppression of impact pressure through dynamic pipeline structure design and collaborative optimization of conveying parameters, combined design of a snakelike pipeline and a sectional horizontal extension section, and cooperation with a tail end U-shaped buffer structure. A multistage speed control device and a variable damping assembly are constructed, and a flow velocity fine regulation and working condition self-adaptive matching mechanism is formed in combination with a pressure prediction model based on machine learning. A fluid-solid-heat multi-physics field coupling analysis technology is introduced, a non-Newtonian fluid constitutive model is optimized, and a pressure distribution rule under a complex working condition is accurately predicted. Through rheological property research and formula improvement, an emulsion matrix system with high thixotropy and suitable yield stress is developed, and the system adaptability is improved from the two dimensions of fluid intrinsic characteristics and a conveying process. According to the technical system, the pressure fluctuation amplitude of the pipeline is remarkably reduced while the conveying efficiency is guaranteed.

The invention provides a predictive maintenance and energy-saving linkage method and device of an industrial air conditioner, electronic equipment and a computer readable storage medium, and is applied to the technical field of data processing. Core operation and environment parameters such as the start-stop frequency of the compressor are collected; monitoring the state of a key component by means of the Internet of Things and edge calculation, constructing an equipment degradation and environment association model, and generating a preliminary maintenance demand and energy consumption early warning; designing a hierarchical maintenance strategy by using a digital twinning and cost model, and outputting a target maintenance instruction and an energy-saving report; dynamically adjusting parameters to generate a linkage control scheme in combination with the thermal comfort and the peak-valley electricity price; further, a multi-device global collaboration strategy is expanded; and finally, generating the reliability level and the energy-saving benefit value of the equipment through multi-dimensional evaluation, forming a closed-loop technical system, and guaranteeing the safety and energy conservation of the equipment.

The invention relates to the technical field of power-carbon collaboration, and discloses a block chain-based power-carbon collaboration data management and intelligent optimization method, system, device and medium, and the method comprises the steps: collecting power-carbon multi-source data in real time, and carrying out the data preprocessing; establishing a correlation model between electricity and carbon data so as to quantify a correlation relationship between unit power generation and carbon emission, and obtaining carbon emission reduction data; a double-objective optimization function is adopted to construct an electricity-carbon collaborative decision-making large model, and an optimal unit output scheme is output through deep learning; and generating a block chain hash identifier for each green electricity transaction, performing contract automatic verification, and if a performance risk is monitored, triggering early warning and sending an optimization suggestion. According to the invention, by constructing a technical system based on power-carbon collaborative data management and intelligent optimization, accurate conduction of carbon emission technical constraints, safety interaction of cross-system data, credible tracing of environmental rights and interests and dynamic prevention and control of risks are realized, and fusion and efficient collaborative operation of a power system and carbon emission management are promoted.

The invention relates to the technical field of building structure engineering, in particular to a simplified elastic analysis and design method for an integrated model of a partition wall structure, and provides a simplified elastic analysis and design method based on a physical mechanism and data driving. And instead, a practical design tool which can be directly used for engineering design, is seamlessly connected with the current specification and has definite physical significance is formed based on intelligent calibration of a large-refinement nonlinear analysis result. According to the method, quantitative correlation between elasticity and nonlinear performance is established, theoretical preciseness is guaranteed, and the method has extremely high engineering practicability and serves as preposition and supplement of refined nonlinear analysis to form a complete technical system from rapid scheme design to accurate performance verification.

The invention discloses a control method of an electricity utilization information acquisition terminal with security situation awareness, and relates to the technical field of electricity utilization information acquisition. Multi-source state evaluation, command risk division, rule decision and execution feedback are no longer independent functions through operation modes, joint security state levels, control quotas, command risk levels, command quota state marks and mutual reference between local execution consistency indexes and collaborative domain execution consistency indexes. A technical system with a close coupling relationship is formed in the electricity utilization information acquisition terminal, so that the method is not only suitable for resident courts, special transformer users and important user scenes, but also capable of automatically updating operation mode definitions, safety state division thresholds, control quota parameters and safety control rules through version comparison after main station side strategy update messages are issued. And the terminal security control capability is continuously evolved along with operation experience and strategy adjustment, and a strong synergistic effect is embodied.

The invention provides a vehicle network interaction AI cooperative scheduling method and system based on multi-source data fusion. According to the method, a'federated learning node + abnormal data processing unit 'collaborative architecture and an AI collaborative scheduling model containing topological modeling, prediction and optimization decision submodules are innovatively constructed, and a unique technical system is formed; fusing vehicle, power grid, environment, user and charging station multi-source heterogeneous data, and generating a vehicle-power grid topological association feature set through isolated forest + GAN preprocessing and transverse federated learning encryption fusion; gAT heterogeneous graph modeling, LSTM-Transform prediction, deep reinforcement learning optimization and online learning dynamic parameter adjustment technologies are integrated, and the data processing efficiency is improved; the data privacy security (the original data cross-domain transmission quantity is equal to 0) is realized, the topological association precision is improved by 40%, and the manual risk and the management cost are reduced; the application module generates a charging and discharging instruction, a load adjusting quantity and an excitation scheme, the scientific management of the whole process of vehicle network interaction is supported, the peak-valley cost is reduced by 15-20%, and the carbon emission is reduced by 10-15%.

The invention discloses a fusion and modeling overhead line construction method, system and device and a medium, and the method comprises the steps: obtaining road detection data information, and constructing a construction simulation scene through the road detection data information; collecting construction condition information, and performing simulation construction in a construction simulation scene based on the construction condition information; in the simulation construction process, safety analysis is carried out, and construction hidden danger points are identified; and carrying out risk management and control on construction hidden danger points. Through a complete technical system of construction simulation scene construction, construction process simulation, safety analysis and risk management and control, the safety and efficiency of overhead line construction are remarkably improved. The virtual simulation technology and actual construction environment information are fused, scheme verification before construction and real-time risk prevention and control in construction are achieved, the mode that traditional overhead line construction depends on experience judgment is fundamentally changed, and a scientific basis is provided for construction decision making.

The invention belongs to the technical field of fresh keeping, and discloses a high-maturity small white apricot ethylene regulation and dynamic controlled atmosphere synergistic fresh keeping method which comprises the following steps: after packaging by a special net cover, pre-cooling in time, and synchronously carrying out 1-MCP fumigation and stage I controlled atmosphere treatment; a refrigerator car transportation or common car heat preservation and cold storage transportation mode is adopted, and stage II controlled atmosphere treatment is synchronously carried out in the logistics link; transferring into a modified atmosphere packaging box of which the inner surface is covered with a photocatalytic fresh-keeping coating, entering a goods shelf, and synchronously carrying out stage III modified atmosphere treatment. According to the invention, a synergetic technology of ethylene dynamic control and self-adaptive adjustment of modified atmosphere parameters is adopted, a full-chain linkage fresh-keeping technology system covering production area-logistics-shelf is constructed, and the core problems of difficulty in ethylene sensitive fresh-keeping, link splitting, high cost and the like in the small white apricot industry are solved. The technology has been applied in Xinjiang Uygur autonomous region warehouse car and wheel platform demonstration bases, the shelf life of eight-mature small white apricots reaches 10-15 days, and the intact fruit rate is 92% or above and is prolonged by 3-5 times compared with a traditional technology.

The invention discloses an SPCS building industrial construction system, which belongs to the technical field of fabricated buildings, and comprises a complete set of technical systems for building industrial design, production and construction, industrial production, transportation and construction site equipment, and a cloud platform for full-life-cycle management and control. The three parts cooperate to realize whole-process integrated construction of investment and planning, planning and design, production and supply, construction and delivery, and operation and maintenance and absorption. Data communication and collaboration are achieved, the design and production matching degree is improved, the construction real-time management and control capacity is improved, quality and safety are guaranteed, green, low-carbon and resource recycling are achieved, and the comprehensive benefits of industrial building of buildings are remarkably improved.

The invention relates to a transparent mine construction method based on digital twinning, and the method comprises the steps: collecting original data, and constructing a standardized data asset system; constructing a mine digital twinborn body through a geometric, physical, behavioral and regular four-layer modeling mode; establishing a real-time linkage channel of the physical mine and the digital twin in combination with the digital twin and real-time original data, and fusing a multi-source data correction model to form a virtual-real closed-loop mechanism; based on the optimized digital twinborn and closed-loop mechanism, developing a scenarized application module, and designing a distributed deployment architecture in which a cloud end is matched with an edge end; and finally, establishing an equipment, system and data total-factor intelligent operation and maintenance system by relying on the digital twinborn body, a closed-loop mechanism and an application module, and dynamically upgrading the system in combination with a regular iteration mechanism to ensure that each technical system adapts to the full-life-cycle demand of the mine for a long time. The technical problems of data fragmentation, model staticization and system isolation in traditional mine management are solved.

The invention relates to the field of flow-state solidified soil testing devices, and particularly discloses construction equipment and a construction process for scouring and repairing flow-state solidified soil for an offshore wind turbine foundation. Comprising an overwater carrying carrier, and a material mixing pool, a water adding stirring pool, a material conveying pipeline, a material conveying pump, a slurry conveying mechanism, a flow state solidified soil scouring performance testing device, a solidified soil rotational rheometer, a fluidity test bed, a detection material taking mechanism and a control center which are arranged on the carrier. The construction device is a complete technical system covering performance integrated testing, site construction real-time detection and complex environment coupling simulation, the dual problems that research and development of a flow-state solidified soil material is lagged and site repair quality control is insufficient are effectively solved, and the safety and reliability of offshore wind turbine foundation scouring repair engineering are guaranteed.

The utility model provides an energy-saving device for separating and purifying materials after hydroxylation reaction of phenol and hydrogen peroxide, and relates to the technical field of chemical synthesis. Materials obtained after phenol hydrogen peroxide hydroxylation reaction are separated and purified through the extraction tower, the extraction agent recovery tower, the first phenol removal tower, the tar removal tower, the second phenol removal tower, the catechol removal tower, the light component removal tower and the hydroquinone tower, the whole technological process is simple, the yield is high, and the high-purity hydroquinone product and the high-purity catechol product can be obtained; according to the utility model, the extraction tower is adopted to replace a dehydration rectifying tower in the traditional process to remove phenol-containing wastewater, so that the phenol recovery rate is improved, and the subsequent wastewater treatment burden is reduced; and the tar removal tower is arranged behind the phenol removal tower I, so that the retention time of tar impurities in the whole process system is shortened, and the process safety is improved. According to the utility model, the high-temperature waste heat at the top of the dephenolization tower I is recovered by combining waste heat recovery with a mechanical steam recompression energy-saving technology, so that the process energy consumption of the operation of the whole device is effectively reduced.

The application discloses a kind of based on project performance assembly construction technology system evaluation method, belong to civil engineering project management field.The application solves the problem of poor accuracy caused by subjectivity in the existing assembly construction technology system evaluation method using qualitative evaluation.The application divides assembly construction technology system project into three stages, constructs multiple input-output evaluation index system, collects input and output data of different stages of completed assembly construction project of target structure system;Three-stage super-efficiency EBM model is constructed, and the total performance and construction stage performance of the completed assembly construction project of the target structure system are obtained by using the three-stage super-efficiency EBM model and the collected data;The different assembly construction technology systems used by the target structure system are compared and evaluated according to the total performance and construction stage performance.The application is mainly used for the evaluation of assembly construction technology system.

The invention discloses a method for inducing proliferation of paphiopedilum protocorm-like bodies by using oryzalin. Comprising the following steps: enabling paphiopedilum seeds to germinate in a germination culture medium to form buds; the buds are soaked and induced in the dark for 6-36 h, and an induction culture medium is a 1 / 2 MS liquid culture medium containing 0.5-5 mg / L of 2, 4-D, 0.05-1 mg / L of TDZ, 5-20 [mu] mol / L of oryzalin and 2% of dimethyl sulfoxide; inoculating the induced buds into a culture medium which does not contain oryzalin for culturing; carrying out proliferation culture on the protocorm-like body; carrying out differentiation culture on the protocorm-like body cluster; rooting and seedling strengthening culture; and transplanting rooted seedlings. According to the method disclosed by the invention, the sterile seeding buds of the paphiopedilum brevicornum protospecies are taken as the explants, the protocorm-like bodies are successfully induced, and the induction effect is remarkable. The research on differentiation, rooting, seedling strengthening and transplanting maintenance is systematically carried out, and a set of tissue culture and efficient rapid propagation technical system for paphiopedilum leucopeniculatum, which is low in cost, simple and convenient to operate and high in application value, is formed.

The application discloses a platform circulating gas lifting intelligent optimization and edge control coordination method, which comprises the following steps: step one, single-well gas lifting dynamic curve drawing; step two, multi-target optimization model establishment; step three, gas injection parameter optimization and dynamic adjustment; and step four, circulating gas lifting intelligent control. Through the construction of an integrated technical system of "single-well dynamic modeling-multi-well coordinated optimization-edge intelligent control", the global optimal distribution of the gas injection amount is realized through a two-stage optimization framework and a particle swarm algorithm, the coupling interference problem existing in the multi-well platform is solved, real-time response is realized through edge control, and the production reduction and shutdown caused by liquid accumulation are avoided. The application can realize the accurate control of the circulating gas lifting process and the maximum yield target, and provides a reliable technical path for intelligent drainage gas production of shale gas fields.

The invention discloses a digital asset popularity guarantee method based on artificial intelligence, and aims to solve the participation dilemma and the risk trap confronted by common users participating in digital assets and fill the vacancy of the traditional financial industry in digital asset livelihood service. According to the method, an artificial intelligence technology system is constructed in combination with human root data on the basis of penetration type civilization compliance all-round dispatch, safety and popularity guarantee is realized through quadruple guarantee of authority screening, technical protection, livelihood adaptation and end office underpinning, and a path is explored for denominated transactions. The core of the method is that an AI algorithm is utilized to generate a user risk bearing capacity label, project risks are monitored in real time, adaptive services and end office understanding are provided by means of a human root double blind interface, the traditional financial industry is linked to create comprehensive service ecology, digital finance is promoted to turn from brutal growth to civilized specifications, and the digital civilized society is assisted to land in a full scene.

According to the office desk with the desk leg hidden connecting structure, a positioning plate is completely embedded in a positioning groove of a desk leg, then a decorative plate covers the positioning plate, exposed connecting pieces are thoroughly eliminated through stacked assembly of the positioning plate and the decorative plate, the visual effect of seamless connection is achieved, the aesthetic requirement of high-end office furniture is met, and the service life of the office desk is prolonged. Besides, through cooperation of the positioning columns and the first positioning holes, rapid combination and assembly of plastic, metal, solid wood and other heterogeneous materials are achieved, triple breakthrough of functionality, attractiveness and economical efficiency is achieved through structural innovation of the technical system, and a solution capable of achieving mass production is provided for customized production of office furniture.

The present application relates to the technical field of road engineering, in particular to a kind of low-carbon durable recycled asphalt concrete preparation and its performance evaluation method, comprising: aging asphalt / SBS polymer activity and its content detection and calculation;Low-carbon durable recycled asphalt design;Low-carbon durable recycled asphalt concrete preparation;Recycled asphalt concrete long-term performance evaluation.The present application innovatively proposes recycled technology based on aging asphalt performance regulation, breaks through the design limitation of traditional recycled asphalt concrete by constructing "material-structure-performance" multidimensional correlation model, and finally forms a complete technical system covering raw material evaluation, mix design, construction quality control and performance prediction, which provides theoretical support and technical support for realizing the high-value and large-scale application of RAP.

The invention relates to the technical field of geological exploration and directional drilling, and discloses a directional drilling system integrating three-dimensional trajectory control and rope continuous coring. The system is composed of a geology and site data acquisition module, a three-dimensional drilling scheme design module, a construction early-stage preparation module, a horizontal directional guide drilling module, a technical casing installation module, a coring operation module, a drilling comprehensive test module and a result acceptance and closed loop module. A complete modular working process including data acquisition, scheme design, construction execution and test acceptance is constructed, and an optimizable technical system is formed from early-stage multi-source data driving design, precise execution and real-time monitoring of all links in construction and comprehensive test and result integration after hole finishing. According to the system, the success rate and the data quality of single exploration can be greatly improved, the system performance can be continuously optimized through experience feedback, and a reliable solution is provided for implementing accurate geological exploration in various limited and complex sites.

This invention relates to a multi-agent orchestration and execution method supporting complex cyclic graph structures, comprising: S1: receiving workflow configuration and constructing a directed graph data structure; S2: performing a depth-first search traversal on the directed graph data structure, detecting and outputting strongly connected components in the directed graph data structure; S3: abstracting strongly connected components containing multiple nodes into super nodes, and keeping single-node strongly connected components as ordinary nodes, thereby constructing a directed acyclic graph containing super nodes; S4: performing topological sorting on the directed acyclic graph to generate a hierarchical execution plan containing multiple execution layers; S5: scheduling execution items according to the hierarchical execution plan, and when an execution item is the super node, starting a loop executor for iterative execution. This method, by constructing a multi-layered technical system, integrates graph algorithm innovation, unified context management, abstraction layer design, metadata-driven techniques, etc., to achieve automated orchestration and execution of multi-agent workflows supporting cyclic graph structures.

This invention relates to an optimization method and system for preventing coking in waste incinerators based on CFD and solid-phase combustion coupled simulation, belonging to the field of solid waste energy utilization and combustion optimization technology. The technical solution is as follows: S1. Full-process coupled numerical modeling and baseline operating condition simulation; S2. Coking risk diagnosis and dominant cause analysis; S3. Two-level sequential collaborative optimization adjustment; S4. Numerical verification and engineering implementation of the optimization scheme; S5. Adaptive operation and closed-loop feedback control. This invention has the following beneficial effects: breakthroughs in the realism and reliability of numerical simulation, greatly improving the accuracy of diagnostic results and the reliability of optimization guidance; the control strategy possesses high innovation and synergy, the technical solution is specific, quantifiable, and highly operable, with extremely significant industrial application effects, outstanding economic benefits, improved boiler operating efficiency and overall economic benefits, and greatly enhanced equipment operating safety; and it forms a complete technical system that is replicable and scalable.

The invention discloses a construction method for segmentally cutting and removing arch ribs of a half-through multi-connected arch bridge in a navigable water area, and belongs to the technical field of highway bridges. The method comprises the steps that a zero-stress-state cutting technology system for the H-shaped steel temporary lock catches at the vault is installed, and the H-shaped steel lock catches are used for bearing and gently transferring internal force of the section of the vault in advance before cutting; an arch foot directional collapse auxiliary device is installed, and a guide frame with a guide arc surface is adopted to guide the to-be-dismantled stand column to collapse in the preset direction; an arch foot root vertical back pressure technical system is installed, vertical pressure is applied through a back pressure device, and horizontal thrust of the arch ribs is counteracted in cooperation with the filled profile steel and the pier caps; a temporary opposite-pull device auxiliary dismantling technology system is added to the end of the installed arch rib, and a temporary opposite-pull rod and an anchoring structure for connecting the arch rib and a tie bar are arranged so as to balance structural internal force in the dismantling process. Through the synergistic effect of the four technical systems, safe arch crown cutting, arch springing stability and arch rib force system balance are achieved.

This invention belongs to the field of soil environmental monitoring and discloses a three-dimensional prediction method for organic matter in soda saline-alkali soils. The method includes the following steps: First, multi-source remote sensing, environmental, and soil organic matter measurement data are collected, and a unified coordinate resolution is established to create a grid. Then, land cover features are extracted using UAV imagery and DSM (Digital Signal Processing), and land cover classification is completed by combining shadow restoration. Sub-pixel endmember abundance is calculated using satellite pixel aggregation data. A three-dimensional covariate dataset is constructed by fusing various features with soil depth. Finally, an ExtraTrees model is built to predict the three-dimensional distribution of organic matter layer by layer. This invention integrates multi-source remote sensing data to build a complete technical system, which can accurately characterize differences in surface composition, simultaneously represent the spatial distribution and vertical variation of organic matter, and effectively solve problems such as mixed pixel interference, poor data coordination, and insufficient three-dimensional prediction. It has strong practicality and good application prospects.

This invention relates to a method for the construction of ultra-deep diaphragm walls in highly permeable strata with fully automated monitoring throughout the entire process. Addressing the problems of low construction accuracy, easy collapse, and lack of real-time monitoring in ultra-deep diaphragm wall construction in highly permeable strata, this invention solves these problems through a collaborative approach of five technical systems: (1) a sealing wall technology system employing a hanging beam, a reserved post-pouring strip, and an inverted corbel structure to enhance impermeability; (2) a detachable steel cage support system using modular truss support to improve rigidity and hoisting safety; (3) a verticality ultrasonic detection system utilizing ultrasonic signals to achieve high-precision detection of the guide wall; (4) a steel-framed inner support system using adjustable supports to prevent cracking of the guide wall; and (5) an automated monitoring system integrating multiple sensors to monitor displacement and temperature in real time and providing cloud-based early warning. This invention, through the integration of multiple technologies, significantly improves construction efficiency and quality, is suitable for ultra-deep diaphragm wall construction under complex geological conditions, and has advantages such as strong impermeability, controllable deformation, and real-time early warning.

The invention discloses an intelligent building equipment fault prediction and diagnosis device based on AI. The device comprises a data acquisition module, a data preprocessing module, a multi-dimensional feature fusion module, an AI prediction and diagnosis core module, a fault tracing module, an early warning grading module, a data storage module and a man-machine interaction module. The beneficial effects of the invention are that a complete technical system of data acquisition, preprocessing, feature fusion, prediction diagnosis and traceability early warning is constructed, fault risk prediction is realized, the functions of fault type diagnosis and fault root traceability are added, the defect that in the prior art, only prediction can be carried out, and diagnosis and traceability cannot be carried out is overcome, and the fault risk prediction and the fault root traceability are realized. The fault processing efficiency is greatly improved; according to the method, the multi-dimensional feature fusion technology is adopted, the equipment features, the equipment correlation features and the environment influence features are comprehensively considered, and compared with the mode that only the single equipment operation state sequence is analyzed in the prior art, the accuracy and robustness of the prediction diagnosis result are improved.

This invention relates to the field of ecological environment protection and governance technology, specifically to a technical system for preventing wind erosion and sand intrusion along the Yellow River and its construction method. The system includes: a high-level frontal sand-blocking belt, composed of at least two sets of high-level sand barriers, positioned windward and arranged on a continuous chain of adjacent sand dunes; a sand-fixing belt combining checkered sand barriers and native sandy vegetation, composed of straw sand barriers and industrial material sand barriers, arranged alternately, with seeds sown within the straw sand barriers; and a row-type tree and shrub main protection belt, composed of sand-fixing groups and wind-lifting groups. By vertically positioning the high-level frontal sand-blocking belt, the checkered sand barrier and native sandy vegetation sand-fixing belt, the row-type tree and shrub main protection belt, and the riverside edge protection belt along the windward side of the Yellow River channel, from the outside in, these systems intercept, fix, and protect against wind erosion from different levels and angles, improving the effectiveness of preventing wind erosion and sand intrusion along the Yellow River.

The invention discloses an automatic acquisition and intelligent analysis digital archive management system in the tobacco industry, and belongs to the technical field of archive management. The system adopts a micro-service architecture constructed based on a J2EE technical system and a Spring Boot framework, and comprises a data acquisition module, a data storage module, a data arrangement module, a query utilization module, a borrowing management module, an authority management module and a digital processing module. The data acquisition module is in butt joint with a service system through a standard interface and performs four-property detection on the electronic archive; the data storage module adopts a distributed architecture of MySQL master-slave copying and Redis caching, and archive files are encrypted and stored by adopting AES-256; the data arrangement module automatically completes data cleaning, file classification and cataloguing through an intelligent algorithm; the query utilization module supports multiple query modes; and the authority management module realizes fine control based on an RBAC model. According to the invention, full-life-cycle digital management of science and technology archives is realized, the archive management efficiency is greatly improved, the management cost is reduced, and the archive data security is guaranteed.