32 results about "Marine industry" patented technology

The invention provides an ocean and related industry classification and identification method and system. The method comprises the following steps: S1, establishing an enterprise credit information database; s2, acquiring a standard file, and performing text preprocessing on the standard file and the manual identification sample; s3, establishing a sea-related enterprise identification model according to an artificial identification sample and the standard file; s4, identifying the to-be-identified enterprise by using the sea-related enterprise identification model to obtain a model identification sample, and calculating the identification accuracy and the extra identification ratio of each marine industry by comparing the model identification sample with the artificial identification sample; s5, adjusting the sea-related enterprise identification model, and identifying the to-be-identified enterprise by using the adjusted sea-related enterprise identification model to obtain an enterprise classification result; and S6, calculating an evaluation score of each identified marine industry for the enterprises in the enterprise classification result. The method can improve the accuracy of the recognition result, has interpretability, and can display the classification basis.

This application provides an integrated circulating cooling system for marine power supplies, comprising: a water filtration assembly, a heat exchange assembly, and a controller; multiple filtration units in the water filtration assembly are arranged in sections along a water delivery pipeline; a flow regulating valve is installed at the inlet end of the water delivery pipeline, and a check valve is installed at the outlet end; a water pump is connected to the flow regulating valve; the circulation loop in the heat exchange assembly is in close contact with the periphery of the marine power supply; one side of the plate heat exchanger is in contact with the bottom channel of the circulation loop, and the other side is in contact with the outer wall of the water delivery pipeline; two temperature sensors are respectively installed in the battery compartment environment and on the outer wall of the water delivery pipeline; the sensor signal acquisition terminal of the controller is electrically connected to the two temperature sensors, and the control signal output terminal is electrically connected to the water pump and the flow regulating valve. The system described in this application adopts a high-efficiency heat dissipation, corrosion resistance, and lightweight design, which can meet the high requirements of the marine industry for power system cooling.

The utility model relates to a bulk carrier electric hatch cover with high sealing performance, which is applied to the field of ships and comprises a cover plate positioned above a hatch of a cabin, a mounting plate fixedly connected to the lower end of the hatch of the cabin, a support frame slidably sleeved on the outer surface of the hatch of the cabin, two first cylinders fixedly connected between the support frame and the mounting plate, and two second cylinders fixedly connected between the support frame and the mounting plate. The left end and the right end of the cover plate are fixedly connected with top plates, the upper end of the supporting frame is fixedly connected with two top rods corresponding to the two top plates respectively, before the cover plate is rotated to be opened and closed, the cover plate can be moved upwards firstly, so that a gap is formed between the cover plate and a cabin opening, and then the cover plate is rotated to be opened and closed. When the hatch cover is closed, the sealing ring below the cover plate is difficult to rub with the hatch of the cabin, so that deformation caused by extrusion friction between the edge of the sealing ring and the hatch of the cabin is effectively avoided, and when the hatch cover is closed, the cover plate is pressed by the pressing assembly, so that the sealing performance of the hatch cover is improved.

1. Name of the product in this design: Satellite Antenna. 2. Application of this design: Satellite antenna for use in the marine industry. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

The invention provides a design and manufacturing construction method of an anti-instability arc-shaped wall plate of a liquid tank, and belongs to the technical field of marine industry. The design method of the anti-instability liquid tank arc-shaped wall plate comprises the steps that a simulation model of the anti-instability liquid tank arc-shaped wall plate is constructed firstly, then simulation evaluation is conducted on the bearing capacity of the constructed simulation model, the bearing capacity of the simulation model is analyzed, and the anti-instability liquid tank arc-shaped wall plate is an arc-shaped bulkhead with curvature instead of a flat bulkhead. The concave face of the arc-shaped bulkhead bears pressure, and the arc-shaped bulkhead is welded to a hull plate. The manufacturing construction method of the anti-instability arc-shaped wall plate of the liquid tank comprises a preliminary forming process and process, a subsequent welding process and process and a surface and overall treatment process and process. The problems that a traditional liquid tank wall plate structure is prone to losing stability, and additional weight needs to be increased when rigidity is increased are solved, the defects existing in traditional design are overcome, and the stability and safety in the taking process of liquid in a tank are improved.

The invention discloses a medical post-delivery system for a search and rescue type aircraft and a data processing method. The medical post-delivery system comprises a stretcher station assembly, a hoisting assembly, monitoring equipment and a seat, the stretcher station assembly, the hoisting assembly, the monitoring device and the seat are all arranged in a cabin of the search and rescue type aircraft. The stretcher station assembly is detachably connected with the hoisting assembly and is used for transferring personnel; the hoisting assembly is used for hoisting and transferring the stretcher station assembly; the monitoring equipment is used for acquiring physiological parameter information of a person and processing the physiological parameter information of the person to obtain a physiological parameter evaluation value. Therefore, by implementing the medical post-delivery system for the search and rescue type aircraft and the data processing method, the transportation requirement of the wounded and the medical requirement in the post-delivery period can be met, so that an auxiliary effect on improving the treatment rate of the wounded is achieved, a guarantee is provided for the personal safety of offshore operation personnel, and development of the ocean industry is facilitated.

This invention relates to a method for natural sea urchin seed collection in marine areas. The method selects areas with abundant sea urchin resources as seed collection points based on statistical data collected throughout the year. Then, using the nearshore seed collection point as the center and the line connecting it to two other seed collection points on its outer perimeter as the radius, seed collection platforms are erected parallel to each other within a "fan-shaped" radius to construct a "fan-shaped" seed collection area. The development of mature sea urchin gonads and the number of planktonic larvae at the seed collection points are monitored regularly to accurately determine the seed collection time. Finally, a new type of seed collection net cage is deployed as the seed collection device according to the planned seed collection volume for seed collection. Compared with traditional net bag natural seed collection, this invention increases efficiency by 20-30%, reduces labor demand by 30%, facilitates mechanized operation, meets the requirements of large-scale natural seed collection industry development, and provides support for subsequent industrial restructuring and sustainable development, thus having significant implications for the sustainable development of the marine industry.

The present application relates to the technical field of marine industry, and particularly relates to a marine microorganism-derived pro-angiogenic peptide cAMP-235 and application thereof.The pro-angiogenic peptide cAMP-235 exhibits excellent blood clot expansion inhibition effect and stable brain vessel effect and the like in a wide concentration range of 100 pM to 1 nM, and provides a more comprehensive, safe and innovative drug solution with transformation prospect for spontaneous and drug-induced ICH.

This application provides a fully aerogel composite structure yarn, its spinning method, and the resulting fabric, belonging to the field of textile technology. The spinning method involves first preparing an aerogel yarn core, then wrapping the aerogel yarn core with outer short fibers to form a composite yarn. This method is simple and easy to implement, resulting in high-value-added yarn products suitable for applications in daily life, construction, military, aerospace, fire protection, and marine industries. The aerogel yarn core of the prepared fully aerogel composite structure yarn is filled with aerogel powder, giving the yarn excellent heat insulation, light weight, and other functions. The friction spinning process then wraps the outer layer with aerogel short fibers, effectively improving the yarn's durability, protecting its internal structure, and making the yarn fluffy with more static air, resulting in better breathability and comfort.

The present invention belongs to the technical field of solid-liquid waste treatment and cosmetic raw material preparation, and specifically discloses a method for preparing cosmetic raw materials from solid-liquid waste based on a deep-sea mining system. The method comprises the following steps: (1) ore mud separation; (2) mud-water separation; (3) multi-stage seawater processing; (4) sediment solid particle processing: separating the siliceous mud and then using a vibrating screen to classify the siliceous mud into coarse particles and fine particles; (5) coarse particle processing: rinsing the coarse particles with clean water and drying them, then sterilizing them with ultraviolet light, and finally grinding them; (6) fine particle processing: separating and purifying cerium oxide particles, refining them, and reducing their catalytic oxidation activity. The present invention effectively reduces pollution and impact on the seabed environment, saves cosmetic companies the cost of raw material collection, and is conducive to optimizing the marine industrial structure and promoting the green development of the marine industry.

This invention provides a massive data processing method for DSGE analysis and decision-making related to marine industries and ecology. Belonging to the technical field of massive data processing for DSGE models, this invention collects multi-source heterogeneous data streams and performs spatiotemporal alignment preprocessing. It then performs threshold cointegration tests on the preprocessed data to identify nonlinear threshold points and establish a state transition matrix. The data is input into a heterogeneous computing scheduler for resource allocation and grid partitioning. A multi-objective decomposition framework combined with particle swarm optimization and simulated annealing algorithms is used to complete parameter calibration. A sliding window mechanism is established, and a recursive least squares algorithm is used for incremental updates. A low-rank approximate decomposition is performed on the high-dimensional weight matrix, and the optimized low-rank submatrix is ​​used as the weight parameters of the DSGE model for decision analysis. This solves the technical problem that massive heterogeneous data is difficult to efficiently support DSGE model parameter calibration and decision optimization under real-time processing conditions.

The invention relates to the technical field of block chains, in particular to a data processing method and device, electronic equipment and a storage medium. The method comprises the following steps: acquiring target data; the target data comprises at least one of sensitive data and non-sensitive data; performing storage based on the target data; wherein the side chain in the block chain is used for storing the sensitive data and / or the first data associated with the sensitive data, and the main chain in the block chain is used for storing the non-sensitive data. According to the method, through the architecture design of combining the main chain and the side chain, data sharing is realized, and a data island is broken; especially in the ship and sea industry, the data sharing efficiency can be improved while the data privacy can be guaranteed, the security and privacy of sensitive information are ensured, and then the trust of a user to data sharing can be enhanced.

Water hyacinth (Echhornia Crassipes) is an aquatic plant known as one of the most important and dangerous aquatic weeds globally. This plant has significant effects on the ecosystem and aquatic environment, causing disruptions in sea transportation and sometimes leading to the destruction of aquatic life in its habitat. Water hyacinth has led to pollution of geographical areas in many countries, recognized as an environmental problem that disrupts the food cycle, water quality, and marine industries. The destructive effects of this plant are so severe that some sociologists consider it a key factor in poverty and hindering the development of countries and the planet. Each water hyacinth plant produces about 1 liter of water waste daily, posing a serious threat to the world's fresh water resources due the millions of plants worldwide. Until today, various chemical, biological and mechanical solutions have been utilized to control this invasive plant. These strategies have not had a significant impact in some geographical areas, or on the contrary, they have had harmful effects (such as the effects of using strong herbicides) on the environment and aquatic ecosystems. Notably, many solutions have not effectively targeted the abundant and resilient seeds of water hyacinth. By utilizing biological signaling (biological messages) to promote bacterial symbiosis in water hyacinth for nitrogen fixation from the atmosphere, and spraying a solution without herbicides or strong poisons, with the aim of establishing the cycle of nitrogen fixation in the plant by inhibiting growth and or the effect on the bacterial symbiotic species in water hyacinth, the production of seeds in the plant is very little and even stopped, as well as the effects of decline and acceleration of the aging process of water hyacinth and the destruction of the plant appear. As a result, we will witness a decrease in the plant population, decrease in growth and reproduction, a significant decrease in water consumption, and a decrease in the quality of the biological tissues of the plant as a result of limiting the resources created for the water hyacinth plant. According to the investigation and study of the effects of this method on micro-organisms and macro-organisms in the water and its margins, it seems that this innovative solution by targeting the fixation of nitrogen from the air and disruption of symbiosis in water hyacinth has a significant effect and the lowest environmental risk compared to other methods.

The present invention relates to the technical field of marine data management, and specifically discloses an intelligent regional summary accounting method for marine industry data, including setting a characteristic time period based on changes in target data, generating a recommendation coefficient based on changes in marine gross domestic product of the target data and multiple matching results within the characteristic time period; selecting several subcategories from the multiple matching results as recommended categories of the target data according to the recommendation coefficient; performing verification analysis on the selected several recommended categories, and using a subcategory that passes the verification analysis as the verification category of the target data. The present invention processes marine industry data that is not in a comparison table of marine and related industries through in-depth data utilization and analysis, thereby solving the problem that the national economic industry categories to which some marine-related units belong are not in the comparison table of marine and related industries and are difficult to classify directly.

The invention, which belongs to the technical field of the marine industry, discloses an autonomous decision-making and cluster cooperation agent system in a complex mariculture environment, the autonomous decision-making and cluster cooperation agent system in the complex mariculture environment comprises a hardware group and a software group, the hardware group comprises a camera, a visual algorithm industrial personal computer, a propeller, a sensor and a battery; the software group is arranged in the visual algorithm industrial personal computer, and the software group comprises a precise tracking and optimized path planning module, an obstacle avoidance module, an underwater agent positioning module, a multi-agent cooperative control module, a formation control module, a data collection module, a cooperative combat module, a decision module, a detection module, a low-noise module and an autonomous decision module. Smooth communication and positioning between the underwater vehicles can be guaranteed, the stability, intelligence and autonomy of the system are high, the accuracy of the AUV during cluster decision making is guaranteed, and the decision making efficiency is effectively improved.

The invention relates to the technical field of marine industry, in particular to a marine microorganism-derived angiogenic peptide cAMP-235 and application thereof. In a wide concentration range of 100 pM to 1 nM, the angiogenic peptide cAMP-235 shows multiple synergistic effects such as an excellent hematoma expansion inhibiting effect and a brain blood vessel stabilizing effect, and a more comprehensive and safer innovative drug solution with a conversion prospect is provided for spontaneous and drug-induced ICH.

The invention discloses a method for preparing a copper-steel composite rod at low cost through a vacuum hot pressing furnace, which comprises the following steps: processing a plurality of graphite holes in a graphite plate, assembling a stainless steel pipe and a copper rod in each graphite hole, carrying out vacuum hot pressing welding, and cooling to obtain the copper-steel composite rod; the stainless steel pipe is placed in the graphite hole, the copper bar is placed in the stainless steel pipe, a guide column with the same diameter as the copper bar is placed at the top end of the copper bar, and the guide column coincides with the axis of the copper bar. According to the method, the graphite plate with the multiple graphite holes is adopted, the stainless steel pipe and the copper rod are assembled into the graphite holes, then the stainless steel pipe and the copper rod are connected through vacuum thermocompression welding, the copper-steel composite rod stable in quality is obtained, large-batch and low-cost preparation of the copper-steel composite rod can be achieved, and the production cost is reduced. The method is suitable for preparing copper-steel composite rods required in the fields of military industry, petroleum, aerospace, marine industry, nuclear industry and the like.

The utility model discloses a ship pipe hanger relates to ship field, including bottom plate and support, the bottom plate is fixedly installed on the upper end of support, bottom plate and support both sides are provided with round mouth, the inside of round mouth is provided with U-shaped ring, the inside of bottom plate far away from the support both sides is provided with anti-drop nut, the inside of support is provided with the anti-drop nut, and the inside of support is provided with the anti-drop nut. The two anti-disengaging nuts are both in threaded connection with the two sides of one end of the U-shaped ring, fastening nuts are rotationally installed on the two sides of the interior of the end, away from the bottom plate, of the support and are also in threaded connection with the two sides of one end of the U-shaped ring, and a mounting plate is integrally formed in the center position of the end, away from the support, of the bottom plate. Three buffer springs are fixedly mounted at the end, away from the bottom plate, of each mounting plate. By the adoption of the structure, the rotation angle of the anti-disengaging nut is effectively limited, looseness caused by excessive rotation of the anti-disengaging nut is prevented, and therefore the reliable anti-disengaging effect is achieved.

The present invention relates to the technical field of marine industries, and discloses an evaporation and purification device for fish oil processing and its usage method. The evaporation and purification device for fish oil processing includes a base, a distillation mechanism, and a condensation mechanism. The distillation mechanism includes a distillation kettle arranged on the base, and a liquid inlet pipe is arranged on the distillation kettle. The condensation mechanism includes a cooling tower arranged on the base, and a spiral condensation pipe is arranged inside the cooling tower. After injecting fish oil into the distillation kettle through the liquid inlet pipe, distillation is carried out to form fish oil vapor, and the fish oil vapor is then injected into the condensation pipe for condensation to obtain purified fish oil. For the evaporation and purification device for fish oil processing and its usage method, a plurality of circulating and moving liquid receiving trays are installed in the distillation kettle, which can not only shovel the substances deposited on the bottom wall and remove the suspended substances on the liquid surface, but also make the fish oil continuously drip in the distillation kettle to increase the contact between the gas and liquid phases, so as to improve the evaporation and purification efficiency of fish oil.

The invention relates to a method to be used in various engineering fields such as automotive, aviation, and marine industries, for the effective and more environmentally friendly chemical removal of organic coatings (cataphoresis coating or electrostatic powder coating) from metal surfaces Moreover, the method does not damage the substrate or the phosphate crystals, thereby minimizing production downtime by eliminating the need for repeated pre-treatment steps and reducing scrap rates by enabling reuse of the substrate material. In addition, the stripping solution does not become contaminated during the process, allowing repeated use without generating waste. The organic coating swells in the developed solution and subsequently separates into a water bath. The dissolution of the organic coating in the water bath provides recycling potential and supports a zero-waste approach.

This invention relates to the field of textile material preparation technology, specifically disclosing a method for preparing medium-strength ultra-high molecular weight polyethylene (UHMWPE) fiber and the resulting fiber. The preparation method mainly involves multi-stage drawing of fibrous UHMWPE to obtain the finished fiber. During multi-stage drawing, the initial drawing speed reaches 10-300 m / min by controlling the drawing temperature, residence time, and deformation distance of each drawing roller. Simultaneously, the total fiber draw ratio can be controlled to achieve synergistic effects, resulting in medium-strength UHMWPE fiber with high strength and modulus. The preparation method provided by this invention can utilize multiple sets of hot drawing rollers for the drawing process, resulting in higher heating efficiency, smaller footprint, simpler production process, and reduced production costs. The high-strength and high-modulus medium-strength UHMWPE fiber prepared by this invention can be applied in marine industries, fisheries, personal protective equipment, and civilian textiles.

The invention relates to the technical field of ocean industry data accounting, in particular to an intelligent accounting platform and method for ocean industry data, and the method comprises the following steps: carrying out the multi-source data collection and preprocessing of the ocean industry data; performing nested analysis on multi-dimensional features in the marine industry data based on a deep learning algorithm, and constructing a marine resource utilization rate, ecological environment index and economic benefit ratio feature map; based on the feature map, constructing a comprehensive benefit scoring function, and meanwhile, fusing a spatial-temporal change rule of the data into the constructed function to realize comprehensive accounting of the ocean industry data; according to the method, the graph neural network model is introduced to perform feature nesting analysis, so that multi-dimensional features in ocean industry data can be deeply mined; the comprehensive benefit scoring function is constructed based on the adaptive weight coefficient, and the spatial and temporal change rule of the data is fused into the function, so that the intelligent accounting of the benefit change of each ocean region in different time periods is realized, and the timeliness and regional adaptability of the accounting are improved.

The invention belongs to the technical field of electric digital data processing, and discloses a digital twinning system development method for the ship maritime work field, which comprises the following steps of: constructing an overwater simulation area and an underwater simulation area; developing a virtual marine environment model and storing the virtual marine environment model into a corresponding database in the simulation area, and then taking the analogue simulation software in the simulation area as a physical entity object to perform digital twinning development in combination with the virtual marine environment model to obtain independent digital twinning modules; storing the digital twin modules into a database of the corresponding simulation area; selecting a corresponding digital twin module; combining various digital twinning modules, constructing a digital twinning system corresponding to the whole physical entity object, and accessing data of a real object; and deploying and displaying to complete development. Technical support is provided for digital twinning development in the ship and sea industry, the development cost is reduced, the development period is shortened, and the fusion effect of software development and hardware development in a digital twinning technology system is improved.

The application provides a design and manufacturing construction method of an anti-instability liquid cabin arc-shaped wall plate, and belongs to the technical field of marine industry. The design method of the anti-instability liquid cabin arc-shaped wall plate comprises the following steps: firstly, a simulation model of the anti-instability liquid cabin arc-shaped wall plate is constructed; secondly, the bearing capacity of the constructed simulation model is simulated and evaluated; and thirdly, the bearing capacity is analyzed. The anti-instability liquid cabin arc-shaped wall plate is an arc-shaped cabin wall with curvature instead of a flat cabin wall. The concave surface of the arc-shaped cabin wall bears pressure. The arc-shaped cabin wall is welded on a hull shell plate. The manufacturing construction method of the anti-instability liquid cabin arc-shaped wall plate comprises the following steps: a preliminary forming process and technology, a subsequent welding processing process and technology, and a surface and overall processing process and technology. The method solves the problems that the traditional liquid cabin wall plate structure is easy to be unstable and additional weight is needed to increase the rigidity, overcomes the defects existing in the traditional design, and improves the stability and safety of the liquid in the cabin during the liquid taking process.

The invention discloses an unmanned ship intelligent driving control system, which belongs to the technical field of unmanned ship intelligent driving, and comprises a sensing module, a decision planning module, a control execution module, a communication module, an energy management module and a fault diagnosis fault tolerance module, the decision planning module is in bidirectional signal connection with the control execution module, the control execution module is in bidirectional signal connection with the communication module, the communication module is in bidirectional signal connection with the energy management module, and the energy management module is in bidirectional signal connection with the fault diagnosis fault-tolerant module. According to the intelligent driving control system for the unmanned ship, through autonomous, intelligent and green technical innovation, the problems of the traditional ship in precision, efficiency and safety are solved, the economic model and ecological value of marine operation are reconstructed, and the beneficial effect is to promote deep transformation of the marine industry to the direction of'unmanned, intelligent and sustainable '.

The invention relates to the technical field of ocean data management, and particularly discloses an ocean industry data-oriented intelligent regional summary accounting method, which comprises the following steps of: setting a characteristic time period based on the change of target data, and generating a recommendation coefficient based on the change of a total ocean production value of the target data and a plurality of matching results in the characteristic time period; according to the recommendation coefficient, selecting a plurality of subclasses from the plurality of matching results as recommendation classifications of the target data; according to the method, the ocean industry data which are not in the ocean and related industry comparison table are processed through deep data utilization and analysis, and the ocean industry data which are not in the ocean and related industry comparison table are subjected to verification analysis, so that the accuracy of the ocean industry data is improved. Therefore, the problem that the national economy industry categories to which part of sea-related units belong are not in the ocean and related industry comparison table and are difficult to directly classify is solved.

The application provides a marine industry and finance fusion decision-making method, medium and system based on big data analysis, belongs to the technical field of big data analysis, and achieves the spatiotemporal alignment and collaborative feature domain classification of multi-source heterogeneous data by adopting a multiscale pattern Laplacian operator evolution dynamics atlas clustering algorithm, removes mixed noise through a fractional calculus complex time-varying diffusion dynamics denoising algorithm, compresses high-dimensional sparse features by using a self-encoder and t-SNE fusion dimension reduction technology, inputs an adaptive spatiotemporal feedback skip graph neural network model based on wave equation constraint to obtain a dynamic financial cost prediction result, and finally maps high-dimensional non-Gaussian industry and finance distribution to a standard Gaussian space by using a deep flow artificial intelligence model based on manifold alignment and performs reverse inverse transformation to output disaster prevention budget compilation and capitalization budget suggestions, thereby solving the technical problem that after multi-source heterogeneous marine industry and finance data are fused under the condition that the spatiotemporal scales do not match, false features are generated, and financial decision-making is misjudged.

The present invention relates to the technical field of marine industry data accounting, specifically to an intelligent accounting platform and method for marine industry data, comprising the following steps: multi-source data collection and preprocessing of marine industry data; nested analysis of multi-dimensional features in marine industry data based on a deep learning algorithm, and construction of characteristic graphs of marine resource utilization rate, ecological environment index and economic benefit ratio; based on the characteristic graph, a comprehensive benefit score function is constructed, and at the same time, the temporal and spatial variation laws of the data are integrated into the constructed function to achieve comprehensive accounting of marine industry data; the present invention introduces a graph neural network model for feature nested analysis, which can deeply explore the multi-dimensional features in marine industry data; based on an adaptive weight coefficient, a comprehensive benefit score function is constructed, and the temporal and spatial variation laws of the data are integrated into the function, thereby achieving intelligent accounting of the benefit changes of each marine region in different time periods and improving the timeliness and regional adaptability of the accounting.

The invention relates to the technical field of data processing, in particular to a compilation method of a high-precision multi-region marine economy input-output table, which comprises the following steps: acquiring a database; an initial MRIO table containing the research area is obtained according to data in the database, if input and output information of the research area is not in the same MRIO table, department matching is carried out, and an MRIO table with consistent departments is constructed, otherwise, department matching is not carried out; adjusting the region sequence in the department-consistent MRIO table to obtain an MRIO table in a standard form; constructing a bridge matrix and a sub-bridge matrix according to the added value proportion of the ocean industry of each region in the industry to which the ocean industry belongs; checking and updating the original bridge matrix and the sub-bridge matrix; and splitting the input-output information of the marine industry from the MRIO table in the standard form according to the bridge matrix, and carrying out balance processing to obtain a balanced MMRIO table. According to the method, a scientific basis and technical support are provided for systematically and finely compiling the MMRIO table.

The present invention provides a method and system for classifying and identifying marine and related industries, comprising: step S1: establishing an enterprise credit information database; step S2: obtaining a standard document and performing text preprocessing on the standard document and a manual identification sample; step S3: establishing a marine-related enterprise identification model based on the manual identification sample and the standard document; step S4: using the marine-related enterprise identification model to identify the enterprise to be identified, obtaining a model identification sample, and calculating the identification accuracy and additional identification ratio of each marine industry by comparing the model identification sample with the manual identification sample; step S5: adjusting the marine-related enterprise identification model, using the adjusted marine-related enterprise identification model to identify the enterprise to be identified, and obtaining an enterprise classification result; and step S6: calculating an evaluation score for each identified marine industry in the enterprise classification result. The present invention can improve the accuracy of the identification result, has interpretability, and can display the classification basis.