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403results about How to "Solve application problems" patented technology

Multi-center watershed water environment distributed cluster management system and method

The invention discloses a multi-center watershed water environment distributed cluster management system and method. The system creates a system operation management center, a numerical simulation center, a data center, a decision command center and a client-side service center, all of which are of different management levels and function levels. By means of division and cooperation of the different centers, computer resources of centers of units of the watershed water environment can be integrated, a resource pool is formed, services are provided according to demands of functions of the centers of the units of the watershed, the problems, such as waiting time losses, the low watershed scale simulation computing speed, low efficiency and resource waste for repeated construction, of a traditional watershed model system due to serial computation can be solved, the watershed water environment simulation efficiency is greatly improved, hardware resources and data resources of the whole watershed are integrated, water environment management, current situation evaluation, future trend prediction and sudden event emergence simulation and decision support of the whole watershed are achieved, and safety of the watershed water environment is guaranteed.
Owner:珞珈浩景数字科技(湖北)有限公司

Pedestrian detection method based on deep learning and multi-feature point fusion

The present invention relates to a pedestrian detection method based on deep learning and multi-feature point fusion. The pedestrian detection method is characterized by at a training stage, firstly acquiring a pedestrian image under an application scene, marking the head and shoulder parts of the pedestrians in the image, and then using the pedestrian samples for the model training, wherein the model training comprises two steps of 1) taking the head and shoulder images of the pedestrians as the training samples, training a dichotomy model of the head and shoulder parts of the pedestrians; 2) using the model parameters obtained by the training in the step 1) to initialize partial parameters of a pedestrian detection model in a transfer learning manner. The pedestrian detection method of the present invention can overcome the problem that the pedestrians shield mutually to a certain extent, adopts a deep learning method to extract the pedestrian features, can better overcome the actual application problem that the factors, such as the pedestrian clothing, postures, backgrounds, illumination conditions, etc., change, also can effectively overcome the problems of the pedestrian multiple postures, the pedestrian multiple scales, the pedestrian mutual shielding, etc., and enables the pedestrian detection accuracy and robustness to be improved substantially.
Owner:SUN YAT SEN UNIV +1

Coking raw material applicability classification, comprehensive quality evaluation and coal blending guiding method

ActiveCN105062531ASolve the problem of huge quality gapMeet the need to control the thermal properties of cokeCoke ovensProcess engineeringCaking
The invention provides a coking raw material applicability classification, comprehensive quality evaluation and coal blending guiding method. According to the method, specific indexes of coking raw materials and the mass index of solid products obtained from coking of the coking raw materials are integrated into three single indexes including caking capacity, coking capacity and a thermal property index according to the corresponding relations with coke quality indexes, and applicability classification is performed on the coking raw materials; the three single indexes are then integrated with ash content and sulfur content value indexes into an comprehensive capacity index, and six price-performance ratio indexes are formed through correlation between the three single indexes, the one comprehensive capacity index, the ash content and sulfur content value indexes and the price; after the applicability classification, coking coal blending is performed according to the three single indexes of the coking raw materials, the one comprehensive capacity index and the ash content and sulfur content value indexes, the six indexes for coal blending are controlled to be within plus/minus e%*a reference scheme score (e ranges from 5 to 10), the price-performance ratio of the six indexes for coal blending is calculated, an optimal coal blending scheme is determined, and refined and optimized coal blending is realized.
Owner:SINOSTEEL ANSHAN RES INST OF THERMO ENERGY CO LTD

Method for preparing silicon-carbon composite anode and lithium ion battery

The invention discloses a silicon-carbon composite anode comprising a silicon source and a carbon source, wherein silicon source is monatomic silicon, the particle size distribution is 100 nm to 80 microns, and the mass of the silicon source accounts for 10-80% of the total mass of the silicon-carbon composite anode; the carbon source comprises a carbon anode material and a conductive agent, the carbon anode material is one or more of carbon fiber, graphite and mesocarbon microbead, and the mass of the carbon anode material accounts for 10-90% of the total mass of the carbon source. According to the silicon-carbon composite anode disclosed by the invention, one-step coating forming, hot pressing flaking, carbonization treatment and high-temperature calcination are carried out on anode slurry prepared by mixing the silicon source with the carbon source, so as to guarantee that the silicon material is effectively dispersed in a carbon skeleton, the prepared silicon-carbon anode can effectively relieve the volume expansion of the silicon material in charging and discharging processes in a circulation process and guarantee excellent cycle performance of the battery; the silicon-carbon composite anode is prepared by one-step coating forming, and no current collector is needed, so that the production process is simplified and the battery is guaranteed to have high energy density; meanwhile, the invention further provides a lithium ion battery containing the silicon-carbon composite anode.
Owner:江苏中兴派能电池有限公司

Composite nanostructure based on three-dimensional porous transition metal carbide Ti3C2MXene and general preparation method thereof

The invention discloses a composite nanostructure based on a three-dimensional porous transition metal carbide Ti3C2MXene and a general preparation method thereof, and belongs to the field of nanomaterials. The three-dimensional composite structure is composed of a three-dimensional porous Mxene-supported inorganic nanostructure, and has a honeycomb hierarchical porous structure. A precursor of atwo-dimensional transition metal carbide and a metal-organic framework compound is subjected to high-temperature pyrolysis or a chemical reaction in an inert or reactive atmosphere to prepare the composite nanostructure with a controllable size. According to the composite nanostructure, stacking of MXene itself is inhibited, an active surface area, porosity, and ion permeability of MXene are increased, and thereby a surface interface of MXene is efficiently used. At the same time, introduction of the metal-organic framework compound realizes uniform and stable compounding of the three-dimensional porous MXene and an inorganic nanomaterial, the fundamental difficult problem that plagues exerting and application of inorganic nanomaterial performance is solved, and the composite nanostructurehas wide application prospects in the fields such as catalysis, energy, photo-electricity, space technology, and military industry.
Owner:DALIAN UNIV OF TECH

Judgment method for boundary layer transition of hypersonic aircraft

The invention provides a judgment method for boundary layer transition of a hypersonic aircraft. The method comprises the steps of determining a transition position of the surface of the aircraft based on early-stage test data; obtaining an orthogonalized laminar flow field of the surface of the aircraft in a corresponding test state, and obtaining N-value distribution of the surface of the aircraft by adopting an improved e-N method considering a transverse flow mode; and in combination with the transition position of the surface of the aircraft, determined based on the test data, determiningan N value N0 for triggering the transition and judging the transition position of the target aircraft. According to the method, based on the test data, a three-dimensional characteristic of the flowfield of the hypersonic aircraft in a lifting body/waverider shape is considered; during the adoption of the e-N method for integration, in addition to consideration of disturbance waves of a secondmode, disturbance waves of the transverse flow mode with the lower frequency are considered; the transition criterion N0 capable of accurately predicting the transition position is obtained; and the effective judgment method is provided for accurately predicting the boundary layer transition of the hypersonic aircraft in the lifting body/waverider shape.
Owner:BEIJING AEROSPACE TECH INST

Method for reckoning getting-on stops on basis of data of one-ticket public-transport integrated circuit (IC) card

ActiveCN102044146AReduce data processing costsTroubleshoot handling and application issuesRoad vehicles traffic controlEmbedded systemIntegrated circuit
The invention discloses a method for reckoning getting-on stops on the basis of data of a one-ticket public-transport integrated circuit (IC) card, comprising the following steps: a, carrying out clustering on card-swiping records of a target bus according to the time of the card-swiping records, taking the time-adjacent card-swiping records as a cluster, each cluster corresponds to one stop, and forming a stop sequence to be recognized; b, determining transfer information according to adjacent card-swiping records of each IC card; c, according to transfer the information, crosspoint data information between bus routes and stop information of the bus routes, reckoning the practical stops corresponding to the cluster of the IC card and forming a recognized stop sequence; d, according to the recognized stop sequence, reckoning a practical stop to be recognized corresponding to a cluster to be recognized, and when the recognized stop quantity is less than 2, reckoning by a Bayesian decision tree method featured by mobile step; and when the recognized cluster quantity is more than or equal to 2, adopting a mode recognition method for reckoning. By utilizing the method, the requirement to data is low and the accuracy is higher.
Owner:北京交通发展研究院

Winter sunlight greenhouse seedling transplantation method of potato seedling seeds

The invention discloses a winter sunlight greenhouse seedling transplantation method of potato seedling seeds. The seedling seeds collected in the same year are subjected to dormancy breaking, pregermination and the like, and cultured and transplanted in a winter. The method mainly comprises the following steps of (1) substrate preparation, (2), the dormancy breaking of the seeds, (3) the pregermination, (4) seeding, (5) seedbed management, (6) nutrition pot preparation, (7) transplantation, (8) management after the transplantation, and (9) timely harvesting. The method has the advantages that (1) the dormancy of the potato seedling seeds collected in the same year is broken effectively, so that a germination rate of the seedling seeds collected in the same year reaches above 80%; (2) the temperature and the humidity are controlled with small sheds in a sunlight greenhouse, so that chilling damages are prevented effectively; (3) enough water is sprayed before the transplantation, so that the damages to root systems of seedlings during the transplantation are reduced, and a survival rate of the transplantation of the seedlings reaches above 95%; and (4) the potato seedling seeds are collected and applied in the same year; a seed breeding period can be shortened by 1-1.5 years compared with the conventional method; and breeding, production and utilization of a new variety are accelerated.
Owner:云南省农业科学院经济作物研究所

Distribution network communication networking mode based on EPON (Ethernet Passive Optical Network) layering technology and application thereof

The invention relates to a distribution network communication networking mode based on an EPON (Ethernet Passive Optical Network) layering technology in distribution network optical fiber communication networking and an application thereof, belonging to the technical field of distribution network intellectualization in the power industry. A communication convergence layer is formed between a backbone communication layer local side node and a converting station node, and comprises a communication convergence switch (or a regional Ethernet switch); abundant optical fiber cores subjected to uplink convergence from a converting station to a local side backbone communication network are connected with a power distribution communication core router of the local side node; the power distribution communication core router is connected with a power distribution automatic main station system; and a downlink passes through the converting station node, and enters a communication access layer by using an EPON layer. The problem of contradiction between different communication service applications and maintenance of a main electric network and a distribution network is solved. Backbone communication optical fiber core resources are fully utilized, the optical transmission equipment resources of a communication network are not occupied, the reliability of a network communication backbone layer of the distribution network is enhanced, independent networking is performed, convenience is brought to maintenance, and the distribution network communication networking mode has the advantages of very high expandability and the like.
Owner:CHENGDU POWER BUREAU +1

A block chain privacy protection scheme and system based on SM9 algorithm

InactiveCN109409884ASolve problems that are difficult to apply to real-world scenariosSolve application problemsDigital data protectionProtocol authorisationChain structurePrivacy protection
The invention discloses a block chain privacy protection scheme and a block chain privacy protection system based on an SM9 commercial cryptographic algorithm in China, belonging to the field of blockchain security and privacy protection. This invention provides an inter-node transaction platform based on federation chain, defines the permissions and functions of various nodes in the platform, and supports node transaction, information verification, parameter maintenance, block generation and other functions. This invention describes an improved SM9 multi-KGC (Key Generation Center) signaturealgorithm, which improves the working mode of single KGC in SM9 algorithm, adapts to the federation chain structure, and adopts this algorithm to determine the identity of the opposite party in the transaction between nodes. A group signature scheme based on SM9 algorithm is proposed. The identity verification of SM9 algorithm is improved to group signature verification, which effectively protects the identity privacy of the signatory. The transaction information is signed by the node through the algorithm and written into the block chain after the transaction, which can effectively hide theidentity information of both parties of the transaction, protecting the privacy of the node and ensuring the legitimacy of the transaction.
Owner:BEIJING ANRUSHAN CULTURE TECH

Method for extracting titanium from vanadium-titanium magnetite

InactiveCN105112689AEfficient and reasonable useSolve the technical problems of efficient separation and extractionProcess efficiency improvementElectric furnaceAluminateSmelting process
The invention discloses a method for extracting titanium from vanadium-titanium magnetite. The method comprises the following steps: adding sodium or potassium salt additive in the reduction smelting of an iron ore concentrate electric stove to obtain liquid iron and titanium-containing slag, wherein vanadium and iron are reduced to enter liquid iron, under a smelting high temperature condition, silicon and aluminum impurities form sodium aluminosilicate capable of being dissolved in dilute acid with the sodium or potassium salt additive, and enabling the sodium aluminosilicate and titanium and aluminum magnesium impurities to remain in the titanium-containing slag; purifying the titanium-containing slag by virtue of a wet-method metallurgical impurity removal method, to acquire a titanium slag product with TiO2 content more than 75 percent. For the application problem of titanium in the iron ore concentrate, the slag modification additive is added in the reduction smelting process, so that not only is the mobility of the slag improved, but also a condition is created for removing the later silicon-aluminum impurities of the slag, the high-efficiency separation and extraction problem of the titanium in the iron ore concentrate can be well solved, the resource utilization rate of the iron, titanium and vanadium is greatly increased, and the utilization rate of the titanium is increased about 3 times compared with the flow of a blast furnace.
Owner:INST OF MULTIPURPOSE UTILIZATION OF MINERAL RESOURCES CHINESE ACAD OF GEOLOGICAL SCI
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