173results about How to "Fast performance" patented technology

The invention provides a method and a device for performing file layout extraction on a parallel file system. The management and storage of data and meta data are separated so as to avoid the interference of data access to meta data access performance, simplify the management of meta data consistency and bring convenience to the performance optimization of the meta data. A meta data server adopts special meta data storage equipment, and establishes a special meta data file system. A parallel file system directory tree, file meta data and the like are stored in the meta data file system in form of file. The meta data file system organizes files in form of B+ tree, and rapid file reading performance is achieved.

The invention provides an Internet picture filtering method and device. The Internet picture filtering method comprises the following steps: according to different preset dimensions, zooming an obtained Internet image to generate pictures of different dimensions; calculating the quick characteristics of the pictures of different dimensions; adopting preset image annotation information and the quick characteristics to train to generate a target image classifier; utilizing the target image classifier to detect the Internet image, and determining a candidate image area which contains target attributes; inputting the candidate image area into a convolutional neural network to calculate the characteristics of the convolutional neural network; and utilizing the classifier to classify whether the picture contains a target image or not according to the convolutional neural network to realize picture filtering. Internet pictures can be favorably filtered, calculation efficiency is improved, a user can carry out fine tuning on a deep neural network on line, and therefore, detection performance of the Internet picture filtering method is better than the detection performance of other methods.

The invention relates to a cloud computing resource allocation method supporting sudden emergency. The method comprises the steps that 1, user resource application information including user priority,urgency degree of resource requirements, resource application quantity and configuration is acquired; 2, the user resource allocation priority is calculated; 3, resource information of a physical server is acquired; 4, the resource utilization rate of the physical server is calculated; 5, a multi-objective function with optimal performance matching of a virtual machine, shortest time provided bythe virtual machine and minimum total load change of a platform and a constraint condition are established; 6, a mapping relation of a virtual machine request and the physical server is established; 7, resource allocation is conducted. According to the cloud computing resource allocation method supporting the sudden emergency, the multi-objective function and the constraint condition are established, a multi-objective optimization algorithm is adopted for obtaining a solution set, a solution is selected as a mapping scheme, and optimal arrangement of the virtual machine can be achieved. Meanwhile, the allocation method has the function of supporting the sudden emergency and can preferentially allocate resources for sudden emergency users.

The invention belongs to the technical field of wireless communication. The invention discloses a collaborative computing unloading and resource allocation method and application. According to the method, the weighted sum of computing rate of mobile edge computing and the throughput of a block chain system is maximized by jointly optimizing collaborative unloading decisions, power allocation and the block size and the block time of the block chain system; optimal compromise of the performance of two subsystems is realized. Specifically, firstly, a computing task of a mobile device is unloadedto an MEC server to be executed through cooperative communication; secondly, a computing unloading transaction from an MEC system is processed by adopting a block chain technology; in order to ensurethe security of data in an integrated system, a trust computing model is considered in cooperative unloading and block generation. According to the method, a joint optimization problem is converted into a Markov decision process problem, and an efficient unloading decision and resource allocation algorithm based on deep reinforcement learning is put forward.

The invention discloses a preparation method for a high-entropy alloy. A pure element or master alloy powder mixture is adopted as a raw material and is directly put into discharge plasma sintering (SPS) equipment, a vacuum hot pressing reaction is conducted, and the bulk high-entropy alloy is fast sintered and synthesized; and the integration of the densification of the alloy bulk material and the solid solution phase of the high-entropy alloy is achieved through the precise control over the SPS sintering parameters, and the dense high-entropy alloy bulk material is obtained at a time. The high-entropy alloy prepared through the technology is high in densification, uniform in structure and excellent in mechanical performance. The preparation method has the outstanding beneficial effects that the equipment and process are simple, the efficient and fast functions are achieved, the production cost is low, and the reliability is high and is suitable for the industrial production of the high-entropy alloy.

The invention belongs to the technical field of remote sensing image processing, and particularly relates to a hyperspectral image waveband selecting method based on mimicry physics optimization algorithm. The method comprises the following steps of: (1) dividing subspaces; (2) generating initial population and initial speed; (3) obtaining an optimal fitness value and a worst fitness value; (4) obtaining the mass of individuals of the population, virtual acting force of other individuals on the individual and the resultant force of the acting force; (5) updating individual movement speed and position; (6) updating the optimal fitness value and the worst fitness value; and (7) judging whether the iterations t meet the condition that t is more than tmax; if so, stopping circulation; and if not, adding 1 to the iterations and continuing to execute steps (4)-(7).

The invention provides a combined material of a PU elastomer used for a vehicle foot pad and a preparation method thereof. The combined material of a PU elastomer consists of a component A and a component B, wherein, the component A consists of PPG, a chain extender, fillings, a plasticizer, a flame retardant, an age inhibitor, a catalyst and color paste; the component B is the reaction product of PPG and isocyanate. When in use, the component A and the component B are mixed according to a weight ratio that A: B is equal to 100: 30 to 65, thus being capable of manufacturing the PU elastomer used for a vehicle foot pad. The combined material of the PU elastomer used for the vehicle foot pad and the preparation method thereof have the advantages that the technique flow is simple, the period is short, the cost value is high and the color of the product can be randomly adjusted when the product is manufactured, thus being completely capable of meeting each performance demand on the vehicle foot pad.

A multifunctional integrated device for cleaning the air pipeline of centralized air conditioner is composed of a miniature electric vehicle, microprocessor, remotely controlled wireless lighting and camera unit, DE motor, steering machine, cleaning brush unit, cleaning mop unit, pressure spraying unit, external 220-V power supply, and remote control platform with LCD. Its functions include automatic cleaning and washing, spraying disinfecting liquid, tracking, lighting, photography, printing and storing data.

This invention is a kind of soft certification false proof method that based on graphic code primary and secondary seal family information association mechanism. The primary and secondary seal family of the certification embeds the knowledge-type privacy character information of certification holder. There is some logic constrained relation between the primary and secondary seal information, and can stop the counterfeit and fraud. The non-simulation capability of this certification is decided by the logic result of key and knowledge character information of certification holder, and doesn't relate to the technique and equipment. So the technical regulation can be an open system. This invention also replaces the high-cost physical equipment process complexity method with the low-cost logic calculus complexity method. And replaces the human sense identifying and other technical method with the electronic information processing method.

The invention discloses a CMOS/MEMS compatible spectroscopic gas sensor which performs qualitative and quantitative analysis by using near-infrared transmission spectra of gases to be measured. The sensor consists of an infrared light source, a photon crystal dispersing prism, an infrared photoelectric detection array and the like, judges the type of gases by adopting the reference structure and analyzing the position of the characteristic line and determines concentration of gases by corresponding absorbance. The invention overcomes the deficiencies that the traditional MEMS gas sensor has complex processes and short service life, has the high sensitivity detectivity and can be manufactured compatible with CMOS processes. The CMOS/MEMS compatible spectroscopic gas sensor can be produced in large scale with reduced cost and analyze the gas concentration gradient through the integrated array.

The invention relates to a forging method and a forging device of a twice forcing molten forging wheel. The forging method of the twice forcing molten forging wheel is conducted circularly by the following steps: (1) materials smelting; (2) heat preservation deposit; (3) molten soup degassing; (4) the molten soup being injected into a lower die; (5) main piston forcing and pressure maintaining; (6) auxiliary piston forcing and pressure maintaining; (7) die sinking; (8) product transfer and deposit; (9) die cooling. Product quality is improved and molten soup dosage is reduced, and twice forcing is conducted to further improve inner structure refined grain of metals, and therefore the forging method and the forging device of the twice forcing molten forging wheel has the advantages of improving product mechanical property, tensile property and other overall properties, shortening product production time, increasing output, improving production efficiency and ex-factory percent of pass of products.

The invention discloses a fuzzy control method for the revolution speeds of high-pressure diaphragm pumps. According to the method, on the premise that a diaphragm pump fixed revolution angle difference control system is used for strictly keeping all the pumps at a constant revolution angle difference synchronous relation, a synchronous speed relation is kept, during the same pulse period, revolution angle initial positions of all the pumps are strictly coordinated, and a set revolution angle difference value is kept. According to the diaphragm pump fixed revolution angle difference control system, a master-slave control structure is adopted, crank angles and the revolution speed of the first diaphragm pump are used as given references of revolution angles and revolution speeds of all moving shaft driving motors of the pump set. According to the method, the output frequency of a frequency converter is determined by analyzing input motor speed deviations and a deviation change rate, and therefore the speed of slave motors is adjusted, and the slave motors have good following performance to main motors. By means of the solution, the anti-disturbance performance of a system with the multiple high-pressure diaphragm pumps is improved, and the system has instant responsiveness and good stability.

The invention discloses a method and device for fast cultivation of anaerobic granular sludge for treating swine wastewater. The method is characterized by comprising the steps of: firstly, completely soaking deactivated cation exchange resin by using a sodium hydroxide solution with the mass concentration of 3-5% for 5-6h, washing the soaked cation exchange resin to be neutral by using water, and then, completely soaking the neutral cation exchange resin for 5-6h by using hydrochloric acid with the mass concentration of 5% to complete the regeneration of the strong-acid type cation exchange resin. Before the diluted swine wastewater is added into an anaerobic cultivation device, the regenerated strong-acid type cation exchange resin is put in the anaerobic cultivation device, and by means of controlling the temperature, alkalinity, pH value and the like inside the anaerobic cultivation device to gradually increase influent concentration, reduce hydraulic retention time and the like, the anaerobic granular sludge with good settling property is obtained when the chemical oxygen demand (COD) removal rate of effluent of the anaerobic cultivation device is 80-90%. Cultivated strains are stable in property, and the anaerobic granular sludge is quick in maturity, high in activity and short in cultivation period. The device is reasonable in structure and convenient to operate.

The invention belongs to the field of water-based ink and production technology thereof, and in particular relates to high-performance water-based epoxy ink and a preparation method thereof. The water-based ink is prepared from a water-based epoxy resin emulsion binder, pigments, auxiliaries, water and other little alcohol substance. The preparation method comprises the following steps of: takingwater-based epoxy resin as the binder; adding a certain amount of pigments, solvent, defoaming agents, wetting agents, dispersing agents and the like; mixing and grinding the materials to prepare a component A; fully mixing a certain amount of water-based epoxy hardener and a proper amount of water to prepare a component B; and fully and uniformly mixing the component A and the component B, and filtering the mixture through a screen to prepare the ink. The prepared ink has the advantages of good solvent resistance, water resistance, gloss retention and adhesive force, stable performance, quick drying, good printing adaptability, dark ink color and bright colors. Because the solvent is water, the ink has the characteristics of no toxicity, no pungent odor, noninflammability, no pollution and the like and is favorable for protecting environment and improving construction environmental quality.

The invention discloses a preparation method of macromolecule water-absorbent resin fire extinguishing agent. The preparation method comprises the following steps: preparing NaOH aqueous solution; carrying out neutralization reaction with the prepared NaOH aqueous solution and acrylic acid; and carrying out graft copolymerization reaction, and solidifying, drying and crushing to prepare a product of which the water absorbent rate is more than 500g/g. According to the preparation method of macromolecule water-absorbent resin fire extinguishing agent disclosed by the invention, the product is polymerized in one step; baking and drying are not required; the process procedure is shortened; the production period is short; the cost is low; the three wastes cannot be generated during production process; and the product is pollution-free to the environment, safe and environment-friendly. The fire extinguishing agent product prepared according to the method is high in specific heat capacity, large in evaporation heat amount, nonflammable and strong in water storage capacity, so that the product has the advantages of fast fire extinguishing speed, low price, convenient operation and the like.

The invention relates to a lightweight design method of a space-based large-aperture reflection mirror, which belongs to the technical field of a lightweight design of a space remote sensing large-aperture reflection mirror, and aims at solving the technical problems in the prior art that a traditional reflection mirror lightweight design method has the defects of low design efficiency, long design period, and uneasiness of obtaining an optimal mirror body structure. The lightweight design method of the space-based large-aperture reflection mirror, provided by the invention, adopts a comprehensive optimization design method combining a traditional experience design, a topological optimization design and a size parameter optimization design to carry out a structural design of a mirror body; a lot of repeated iteration work is finished by a computer, so that a lot of manpower is saved and the design efficiency is high; and a design process is rapid in convergence and the mirror body structure with optimal properties can be obtained rapidly.

The invention relates to a method for testing the underwater plugging-unplugging performance of an underwater wet type connector. The method comprises: S1, an underwater wet type connector plug is fixed at a front clamp and an underwater wet type connector socket is fixed at a rear clamp; S2, cables of the underwater wet type connector plug and the underwater wet type connector socket are connected with an external testing device; S3, a motor assembly is started and drives the front clamp to drive the underwater wet type connector plug and the underwater wet type connector socket to be plugged; S4, according to a display result of the external testing device, the performance of the underwater wet type connector is determined; and S5, the motor assembly is turned off and testing is ended. According to the invention, the front clamp and the rear clamp are installed in the water tank to connect the connector plug and the connector socket respectively and fixedly and thus the connector performance is tested in an underwater state, so that the accuracy of the underwater wet type connector is improved; the cables of the plug and the socket are led out respectively and are connected withindicator lamps and the connector performance is determined by observing the on-off situation of display lamps.

A lithium battery, including an anode, a cathode, an electrolyte solution and a package structure. The anode includes a material having an oxygen-containing functional group. The cathode and the anode are configured separately, and a housing region is defined between the cathode and the anode. The electrolyte solution is disposed in the housing region, and the electrolyte solution includes water and an additive. The package structure covers the anode, the cathode and the electrolyte solution.