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143results about How to "Alleviate resource constraints" patented technology

Blocked convolution optimization method and device for convolution neural network

The invention relates to the field of deep neural networks and provides a blocked convolution optimization method and a device for a convolution neural network, so as to solve the bottleneck problem of convolution operation in a hardware processing system in the neural network. The optimization method comprises steps: a to-be-blocked convolution layer is selected, and the upper limit of the block size is determined; according to the upper limit of the block size, a block number and the block size of an input feature map are determined; based on the block number, the block size, the size of a convolution kernel, the size of the input feature map and the filling size of an input feature map boundary, the block boundary filling size of a block feature map is calculated; and based on the block number, the block size and the block boundary filling size, a convolution based on the block boundary filling is built to replace the original convolution. The resource constraint problem of the convolution neural network during operation of an embedded hardware platform is greatly alleviated, the burst length is improved maximally when a memory is read and written, the throughput is improved, the time delay is reduced, and the efficiency is improved.
Owner:INST OF AUTOMATION CHINESE ACAD OF SCI

Zinc alloy bar extruding process designing and optimizing method

ActiveCN102463268AHigh degree of automationSolving Extrusion Cracking ProblemsConstitutive equationMicrostructure
The invention relates to a zinc alloy bar extruding process designing and optimizing method, which comprises the steps of: obtaining a true-stress and true-strain curve of a zinc alloy by adopting a high-temperature compression and high-temperature tension test; establishing a constitutive equation and an operation drawing of the zinc alloy, carrying out microstructure analysis, researching a thermal deformational behavior, selecting a deformation condition suitable for processing; carrying out finite element numerical simulation, establishing an extrusion forming limit drawing, optimizing an extrusion process window, carrying out thermal extrusion to obtain a zinc alloy bar; and establishing an extrusion test data base, and predicting a relationship between the extrusion process and surface cracking, quality and performance of the extrusion bar by adopting a neutral network. The invention can realize optimal matching of all parameters in a process of extruding the zinc alloy bar, accurate control on the extruding process, and integration of process design, optimization and performance control. The prepared zinc alloy bar has the characteristics of better surface quality, fine and uniform textures, high performance, high pass percent and high production efficiency, is suitable for massive production, and has remarkable economic and social benefits.
Owner:GRIMAT ENG INST CO LTD

Method for extracting coal seam gas through ground fracturing and underground horizontal drill holes

ActiveCN102493831AImprove permeabilityImprove drilling air permeabilityFluid removalGas removalHydraulic fracturingCoal
The invention relates to a method for developing underground coal seam gas, and provides a method for extracting coal seam gas through ground fracturing and underground horizontal drill holes in order to ensure the safety production of a coal shaft and improve the air permeability of the underground drill holes as well as the extraction efficiency of gas. The method comprises the following steps: 1) shaft placing design; 2) ground shaft drilling, as well as ground construction of vertical drill holes or directional drill holes for a mine in areas with roadways and without construction of underground coal seam gas extraction drill holes; 3) hydraulic fracture, namely, conducting hydraulic sand fracture after well completion so as to form high permeable fracture influenced areas; 4) underground horizontal long drill holes, namely, drilling horizontal directional seam gas extraction holes along a main mineable coal seam to form a horizontal drill hole influenced areas; the horizontal drilling hole influenced area is communicated with the fracture influenced area to realize the coal seam gas extraction. Through adopting the method provided by the invention, the hazard of coal mine gas disaster can be eliminated, and the guarantee degree of safety production of the coal mine can be improved at the same.
Owner:SHANXI JINCHENG ANTHRACITE COAL MINING GRP CO LTD

Potassium sulfate and magnesium sulfate fertilizer production process having extrusion prilling step and no drying step

The invention relates to a technique for manufacturing magnesium potassium sulfate fertilizer by extrusion pelleting with no drying, which is characterized by: mixing lemery, anhydrous magnesium sulfate, water retention agent as well as medium elements and microelements according to the weight portions of 46:35:0.6:18.4; transmitting the mixture to a feed hopper after being fully stirred, then packaging the mixture into a finished product by rolling, cutting up, pelleting and sieving; the medium elements and the microelements include: zeolite powder, borax, zinc sulfate, bluestone and green copperas which are uniformly mixed according to the weight portions of 10 to 20: 1 to 3: 1 to 2.5: 0.1 to 1.5 : 0.1 to 1. The invention adopts the technique of extrusion pelleting and is added with a drought control water retention growth promoting agent; the produced multi-element magnesium potassium sulfate water retention fertilizer has the advantages of slow nutrient release, high fertilizer operating factor, easing resource shortage, reducing soil nutrient losing, protecting the underground water environment as well as being safe and environment protective. During the whole manufacture process, no water and no drying processes are educed, thus reducing power consumption and coal consumption during the drying and cooling processes; no contaminations of the three wastes are discharged during the manufacture process.
Owner:郭瑞

Full-automatic collection, smashing and compact forming combination machine for field waste crop straws

ActiveCN103749964ASolving the collection is labor-intensiveSolve efficiency problemsBiofuelsSolid fuelsPre treatmentAgricultural machinery
The invention discloses a full-automatic collection, smashing and compact forming combination machine for field waste crop straws, and belongs to the technical field of agricultural machineries. According to the full-automatic collection, smashing and compact forming combination machine for field waste crop straws, the problems of great labor cost and low transportation efficiency in collection of the agricultural straws are solved. The full-automatic collection, smashing and compact forming combination machine for the field waste crop straws comprises a front straw automatic picking and preprocessing system, a smashing and compact forming integration system and a biomass particle automatic transportation and temporary storage system, wherein the front straw automatic picking and preprocessing system is suspended on the front side of a walking chassis integrated system frame; the smashing and compact forming integration system and the biomass particle automatic transportation and temporary storage system are mounted on a chassis of the walking chassis integrated system from front to back; the front straw automatic picking and preprocessing system, the smashing and compact forming integration system and the biomass particle automatic transportation and temporary storage system are connected together through a transmission mechanism. The combination machine is applicable to full-automatic collection, smashing and compact forming for the field waste crop straws.
Owner:NORTHEAST FORESTRY UNIVERSITY

Convergence type metropolitan area wavelength division access network system and accessing method

The invention discloses a convergence type metropolitan area wavelength division access network system and an accessing method, and relates to the field of metropolitan area access. The system comprises an OLT located in a central apparatus room, m ROADM nodes and n far-end OTUs, wherein m and n belong to positive integers, m is larger than or equal to 1, and n is larger than or equal to m. The central apparatus room is a network convergence point, the OLT of the central apparatus room and the m ROADM nodes are sequentially connected through optical fibers to form an annular topological structure, the connecting direction of the m ROADM nodes in an annular topology is expressed in the eastward direction and the westward direction, on the basis of the clockwise direction, the eastward direction of a prior ROADM node is connected with the westward direction of a next ROADM node, only one optical fiber exists between every two adjacent ROADM nodes, and each ROADM node is connected with at least one far-end OTU. All services of a service provider can be accessed through one network, the robustness requirements such as mobile backhaul and a special line for a big customer are met, management is convenient, cost is low, bandwidth is allocated flexibly, capacity is large, and the accessing distance is long.
Owner:WUHAN POST & TELECOMM RES INST CO LTD

Offshore floating integrated facility platform powered by green energy

InactiveCN109178228ASafe and efficient operationHave experimental conditions for scientific researchWaterborne vesselsVessels for aircraftFresh water organismWaste recycling
The invention discloses an offshore floating integrated facility platform driven by green energy, including a main body of a semi-submersible platform, a sustainable power supply system, an ocean observation system, an integrated test system, a connection system, an ocean communication and relay system, a freshwater system and an organic waste recycling and energy utilization system which are installed on the main body of the semi-submersible platform. The offshore floating integrated facility platform driven by green energy takes the large-scale semi-submersible wave energy power generation platform as a carrier to construct an offshore sustainable power supply system composed of wave energy + solar energy + energy storage + standby diesel generator set, is equipped with seabed, underwater, water surface and sky detection equipment and instruments, and is equipped with general and special equipment to form a complete observation equipment launch, operation, recovery support system, toensure the safety and efficiency of scientific research equipment in a variety of operating conditions; and the offshore floating integrated facility platform driven by green energy is integrated with natural gas hydrate, hydrology, meteorology and other research cabins to form an integrated ocean laboratory, and has open sea test conditions for long-term scientific research.
Owner:GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI

Manufacturing method for wood-based cotton stalk composite artificial board

The invention provides a manufacturing method for a wood-based cotton stalk composite artificial board. The manufacturing method is characterized by comprising the following steps that firstly, cotton stalks are cut off, the water content of the cotton stalks is controlled to be within 15-20%, and then the cotton stalks are cut into small sections 1.5-2.5 cm long; secondly, hot grinding is carried out, particularly, the cotton stalks cut as needed and wood strips are subjected to hot grinding and pulping through two hot grinding machines, and the pulping condition of the cotton stalks is that the steam pressure is 2-5 kg/cm<2>; thirdly, glue is applied and dried, gluing and drying are carried out synchronously after hot grinding, and water-proofing agents are added at the time; the applied glue amount and the applied water-proofing agent number of the cotton stalks are 10-14% and 1-2% respectively, the applied glue amount and the applied water-proofing agent number of wood fibers are 8-12% and 0.5-1% respectively, and the water content of the fibers with glue applied is 8-12% through drying; fourthly, laying is carried out, the dried mixed materials with the glue applied are laid into a board blank with the required thickness; fifthly, hot pressing is carried out, the hot pressing temperature is 140-200 DEG C, the hot pressing pressure is 2.5-4 MPa, and the hot pressing time is 15-30 second/mm; and sixthly, edges are cut, and another kind of fiber board product is formed.
Owner:高云

Wireless sensor network key management method based on key table

The invention relates to a wireless sensor network key management method based on a key table. An N order key table matrix is generated by a random function in a networking stage in a wireless sensor network based on clustering, the order of the key table matrix is voluntarily configured by a network manager, the larger the order is, the higher the strength of the generated key is, and elements in the key table are extracted to serve as key materials to construct a pair key and a group key for node communication, wherein the key table limits the elements in the matrix by modular operation, and the diversity of the generated keys is improved; and the pair key and the group key are updated in a network operation stage. The method specifically comprises the following steps: 1, establishing a pair key material; 2, establishing the pair key; 3, establishing and allocating the group key; 4, updating the pair key; and 5, updating the group key. By adopting the method, the strength of the generated keys is improved, the calculation, storages and communication overheads of the nodes can be reduced, meanwhile the forward/backward safety of the network is guaranteed, and the ability of defending replay attack, forgery attack and other common network attacks are available.
Owner:CHONGQING UNIV OF POSTS & TELECOMM

Compound biological pesticide-added fertilizer with efficacy of tobacco quality improvement and preparation method and application of compound biological pesticide-added fertilizer

The invention discloses a compound biological pesticide-added fertilizer with an efficacy of tobacco quality improvement and a preparation method and application of the compound biological pesticide-added fertilizer. The compound biological pesticide-added fertilizer is characterized by being prepared from a composted substrate, a potential of hydrogen regulating agent, a silicon fertilizer and biocontrol factors, wherein a consumption ratio of the composted substrate to the potential of hydrogen regulating agent to the silicon fertilizer is (200-300):(10-15):(1-4), the composted substrate comprises a basic substance and a composted substance in a ratio of (500-800):(1-3). Waste tobaccos and the like are taken as raw materials, then composted strains are added to realize mixed compositingand fermentation, and an appropriate amount of a carbon source, a nitrogen source, the potential of hydrogen regulating agent, the silicon fertilizer and the bicontrol factors are added to obtain thebiological pesticide-added fertilizer which contains camellia oleifera and tobacco active components, the biocontrol factors and metabolites thereof. In addition, functions of improving soil nutrientcirculation, microbial community structure and tobacco quality and prevention and control of tobacco disease and pest damages are achieved, recycling of tobacco waste resources, camellia seed cakes and livestock and poultry excrement is realized, and great benefits are achieved.
Owner:INST OF PLANT PROTECTION SICHUAN ACAD OF AGRI SCI

Method for preparing titanium dioxide from high-titanium coal gangue

The invention discloses a method for preparing titanium dioxide from high-titanium coal gangue, and belongs to the technical field of resourceful utilization of coal-series solid wastes. A new technology is provided for resourceful utilization of cal gangue by taking high-titanium coal gangue as a raw material for producing titanium dioxide. The method comprises: mixing sulfuric acid and goal gangue subjected to grinding and sieved by a 80 mesh sieve according to the mass ratio of 1.4-1.6:1, performing acidification reaction in a microwave oven, and performing dissolving and filtering to prepare an acid immersion liquid; performing neutralization, reduction and dilution on the acid immersion liquid, adding sodium carbonate or potassium carbonate to adjust pH to 4.5, separating to obtain a titanium dioxide precursor, performing alkali dissolution on the precursor to obtain crude titanium, dissolving the crude titanium with a diluted acid for removing impurities, filtering to obtain refined hydrated titanium dioxide, and calcining at 800 DEG C to prepare titanium dioxide. The method is capable of extracting aluminium and iron while preparing titanium dioxide, the usage amount and the utilization rate of coal gangue are high, auxiliary materials do not need adding, and the method has the advantages of being simple in production technology, convenient to operate, low in energy consumption, stable in product quality, easy for industrialized production and the like.
Owner:KUNMING UNIV OF SCI & TECH +1

Benzalkonium chloride monomer synthesis technology

The invention relates to the technical field of fine chemicals, and more specifically relates to a benzalkonium chloride monomer synthesis technology. The synthesis technology comprises the following steps: (1) according to a formula, weighing fatty alkyl dimethyl tertiary amines, benzyl chloride, and ethyl acetate; (2) adding ethyl acetate into a glass lined reactor, pumping fatty alkyl dimethyl tertiary amines and benzyl chloride into a head tank, starting the stirring device of the reactor, dropwise adding fatty alkyl dimethyl tertiary amines and benzyl chloride into the reactor at a room temperature according to a same ratio; (3) heating the reactor to a temperature of 70 to 100 DEG C, and maintaining the temperature to carry out reactions for 7 to 10 hours; (4) starting circulating cooling water to cool the products to the room temperature until crystals are precipitated completely; (5) taking out the crystals, subjecting the crystals to vacuum suction filtration, during the suction filtration process, washing the crystals by ethyl acetate for 2 to 5 times, and saving the filter cakes; and (6) adding ethyl acetate into the filter cakes, carrying out re-crystallization, and after the crystals are completely precipitated, drying the crystals. The production cost is low and the purity of prepared benzalkonium chloride is high.
Owner:广东洛斯特制药有限公司
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