46results about How to "Satisfy validity" patented technology

The invention provides a real-time three-dimensional double-hand gesture recognition method and system based on binocular vision. The real-time three-dimensional double-hand gesture recognition method based on binocular vision comprises the steps that initial calibration and correction are conducted on an image firstly, the outline of a gesture is extracted, two-dimension gesture recognition is conducted on the extracted gesture outline, the mass center of the gesture outline is calculated, stereo matching is conducted on the mass center obtained through calculation, three-dimensional hand gesture recognition is achieved, and corresponding gestures are displayed in a human-computer interaction module based on the three-dimensional hand gesture recognition. According to the real-time three-dimensional double-hand gesture recognition method and system based on binocular vision, binocular vision information can be utilized, and human-computer interaction, based on the three-dimensional space, of double-hand gesture change of a computer is achieved; meanwhile, extremely high real-time performance and extremely high effectiveness can be achieved, and requirements for hardware are lowered; in addition, the man-machine interaction effect is achieved, and the requirements for real-time performance and effectiveness are well met.

The invention discloses an artwork circulation, authentication and registration method based on a blockchain and an expert system. According to the method, registration for an authentication result of an artwork is completed by smart contracts of authentication markets, and then the artwork is allowed to be circulated and recorded in smart contracts of trading markets. According to the method, block information accumulated in the smart contracts of the authentication markets is utilized, and knowledge is acquired outside the blockchain by machine learning of authentication information, the expert system is established, and a need for the commodity authentication validity and authentication result checking is met through providing an authentication suggestion for the artwork of which an inquiry is to the expert system. In addition, under the premise of protecting the identity privacy of a trader from disclosure, the smart contracts of the trading markets and the smart contracts of the authentication markets are combined, and cultural relic registration is established to specifically record a circulation state and an authentication result of a cultural relic. Ultimately, decentralization is realized in a trading process of the artwork by virtue of the above-mentioned method, and gain effects of creditability, convenience and a low cost are achieved at the same time.

The invention provides a construction order management method applied to a business operation support system and a management system thereof. The method comprises the following steps: each process node of a construction process is treated as an atomic task, each construction order corresponds to an atomic task list, and a new atomic task is generated when construction personnel complete an atomictask; and the construction personnel starts construction after extracting the construction order, order-return atomic tasks are executed if construction is smoothly completed, and order-back atomic tasks are executed if construction fails to complete due to particular reasons. The method can help realize unified and effective management on the construction personnel for executing the tasks by distributing construction roles and recording construction implementation situation of the construction personnel; and meanwhile can help realize flexible management on the construction process by adjusting an execution sequence of the atomic tasks of the construction order via a process management system. In addition, by adopting the method, the construction order can be immediately returned when theconstruction personnel fail to in construction due to particular reasons, thus construction can be effectively controlled and assured and timely completed.

The invention discloses a test method for a finished automobile remote control performance of an automobile remote control key access control system. The technical scheme is as follows: the method is implemented through the following steps: 1. selecting an open area test site; 2. signing an origin of a coordinate, and making a test circle; 3. putting a tested automobile; 4. installing a test instrument; 5. testing the finished automobile remote control performance; and 6. plotting to judge the remote control performance. According to the test method, the finished automobile remote control performance can be tested in an open area without a large professional automotive antenna test darkroom so as to greatly lower the cost of the finished automobile remote control performance; meanwhile, the measurement result is real and effective and can directly represent the finished automobile remote control directivity and effective remote control distance of the remote control key access control system; the open area can be selected according to the practical situation; and test positioning and signal measurement are both finished by simple equipment, so that the test method is convenient to operate and has good flexibility, and the test efficiency is greatly improved.

The invention provides a box dimension-based emitter fingerprint feature extracting method and relates to an emitter fingerprint feature extracting method. The method is aimed to solve the problem that conventional feature parameters cannot meet the requirements for the effectiveness and reliability of specific emitter identification and thus the accuracy of specific emitter identification is low.The box dimension-based emitter fingerprint feature extracting method comprises the steps of: firstly, performing segment treatment on a received one-dimensional emitter signal to obtain one-dimensional emitter signal segments; secondly, performing box dimension feature extracting on the one-dimensional emitter signal segments obtained in the first step to obtain a box dimension feature vector. The method is applicable to the field of specific emitter identification.

The invention relates to a platinum-rhodium thermocouple fine wire material for quick temperature measurement and a preparation method thereof. The material comprises a positive pole PtRh30 material and a negative pole PtRh6 material. The positive pole PtRh30 material comprises the following components in parts by weight: 69.9-70.4 parts of platinum, 29.6-30.1 parts of rhodium, 0-0.003 part of yttrium, 0-0.003 part of zirconium and 0-0.003 part of cerium. The negative pole PtRh6 material comprises the following components in parts by weight: 93.8-94.1 parts of platinum, 5.9-6.2 parts of rhodium, 0-0.003 part of yttrium, 0-0.003 part of zirconium and 0-0.003 part of cerium. The yttrium, zirconium and cerium are dispersed in the material in the form of fine oxides. The oxides are represented by parts by weight of zirconium, yttrium or cerium. When the material is prepared into a platinum-rhodium couple wire, the minimum diameter is phi0.035mm, and the application range is phi0.035-0.07mm. The material has the advantages of high speed, accuracy and stability for temperature measurement, high reliability, high strength and the like.

The invention researches a new preparation method aiming at the phenomena that the tegafur injection cannot realize scale production, has poor product stability and is easy to crystallize and the like so as to fulfill the purposes of producing the tegafur injection in scale, improving the product stability, removing crystals, reducing the content of related substance and the like. The pH value is adjusted by using carbonate and sodium hydroxide in a tegafur injection formula, the production speed is improved by heating in the preparation process, and the content of the related substances is reduced and the stability is improved by using active carbon.

The invention relates to the technical field of educational administration information management. The invention particularly relates to an educational administration management system. The system comprises a Student terminal, Teacher side and server side, Student terminal comprises an evaluation module, The server comprises a judgment module, Database and pushing module, the evaluation module isused for evaluating the teacher by the student; course evaluation time limit information is stored in the database; the judgment module is used for judging whether the evaluation time of the student exceeds the course evaluation time limit; According to the teaching affair management system, the problem that students in an existing teaching affair management system cannot evaluate the teacher in time and feed back the class quality of the teacher is solved, and the teaching affair management system is mainly used for the teacher to adjust the class mode in time according to the information fedback by the students.

The present invention relates to the field of data processing, and in particular, to a method for transmitting keys, a receiving terminal, and a distribution terminal. The method for transmitting keysincludes the steps: transmitting a first public key certificate to the distribution terminal, so as to enable the distribution terminal to verify validity of the first public key certificate; verifying validity of a second public key certificate from the distribution terminal, and obtaining a first verification result which includes certificate validation and certificate invalidation; when the first verification result is that the certificate is valid, sending a key distribution request to the distribution terminal; and according to a response message sent from the distribution terminal, obtaining a specific key. The method for transmitting keys can improve convenience and security of transmitting the key at the same time.

The invention discloses a crisscross water mist fire shield system. The crisscross water mist fire shield system comprises a high-level water tank, a high-pressure fire pump, a high pressure resistant metal hose and a water mist jet device which are sequentially connected through a water delivery steel pipe. The high-level water tank is provided with a make-up water supply and a water level gauge. High pressure resistant locking adapters are arranged at the two ends of the metal hose. The water mist jet device comprises four arc-shaped metal pipes which are distributed in a crisscross mode, supporting anchors installed below the tail ends of the metal pipes, a high-pressure water uniform distributor arranged at the junction of the four metal pipes, and upper and lower reinforcing ribs connected with the four metal pipes. Upper ports of the four metal pipes communicate with the high-pressure water uniform distributor. The tail ends of the four metal pipes are closed and form a concentric circle. A plurality of water mist nozzles with openings facing downwards are arranged in the circumferential direction of the metal pipe. The crisscross water mist fire shield system is simple in structure, good in stability and large in coverage area of fire extinguishing, can rapidly and effectively extinguish fires caused by flammable liquid or gas leakage of underground pipelines as well as fires at underground adit entrances, and further has a cooling effect.

The invention belongs to the technical field of tissue engineering and particularly relates to a construction method of a 3D epidermis model. According to the method, a fibroblast treated by using mitomycin C (Mitomycin C, MC) is adopted as a trophoblast and inoculated with a keratinocyte, various factors and proteins secreted by the fibroblast are supplied to the keratinocyte for growth requirements, and meanwhile, low-concentration serum, EGF, insulin and CaCl2 are matched to construct the 3D epidermis model through two phases of submerged culture and gas-liquid surface culture. The constructed 3D epidermis model is highly consistent with a human epidermis structure, the production cost is reduced, and the economical, effective and efficient requirements required by large-scale production of the 3D epidermis model are met.

The invention relates to a network packet classification algorithm, comprising: dividing the existing classification rule set into a large rule subset of a source IP address and a destination IP address, a large rule subset of the source IP address, a large rule subset and a small rule subset of the destination IP address; consolidating the four equivalence classes separately; eliminating the equivalent classes with less than 5 rules in the process of merging four different subsets and storing separately in the form of linked list, and storing the addresses of the first elements in the linkedlist in the corresponding lookup tables; making priority comparison on rules from four different subsets and outputting the rules that match the packet header with the highest priority. The inventionhas the beneficial effects that the memory consumption of the lookup table construction process is reduced by combining the overall structure of the RFC algorithm and the location selection idea of the algorithm of the decision tree and combining the subset partition technology, the rule elimination technology and the location selection technology, and the high-speed packet classification processing is realized while the hardware memory validity is satisfied.

The invention discloses a wedge-shaped inward folding synchronous rotating mechanism which comprises a packaging body and rotary shafts connected with the two ends of the packaging body respectively;each rotary shaft comprises a rotating shaft and compensating mechanisms arranged on the two sides of the rotating shaft respectively; each compensating mechanism comprises a sliding rail seat and a slider; each rotating shaft is composed of a middle gear group and rotating mechanisms at the two ends of middle gear group respectively; each rotating mechanism comprises a first rotating mechanism and a second rotating mechanism; each of the first rotating mechanisms and the second rotating mechanisms is provided with multiple semi-circular arc moving blocks; each first rotating mechanism furthercomprises an elastic block; each second rotating mechanism further comprises two groups of positioning pins for realizing positioning and clamping of 0-degree and 180-degree positions and finishing self-locking; each positioning pin is provided with a spring; the compensating mechanisms and the rotating mechanisms realize connection positioning through connection of semi-circular arc pipe positions and provide damping and torsion of synchronous rotation, a mechanism is bent along a spindle self, a double-side rotating circle center is arranged at the joint of the upper end of each rotary shaft and a screen, and in the rotating process, each screen sinks into the middle part of the corresponding rotating shaft to realize compensation buffering.

The invention belongs to the technical field of computer-aided tolerance design (CAT), in particular to a method for automatically verifying the rationality of a reference system based on ontology rule description, comprising the following steps: (1) constructing a rationality ontology of the reference system; (2) establishing SWRL reasoning rules; (3) extracting relevant tolerance information; (4) extracting the degree of freedom information of geometrical elements; (5) Constructing the axiom set of assertion to test the rationality of the benchmark system; (6) Reasoning determines the rationality of the benchmark system, and outputs the reasoning information of the rationality test. The invention adopts OWL language to describe reasoning information, SWRL language describes inference rules, the rationality of the benchmark system is checked automatically by using the powerful expression and reasoning ability of ontology, It has the advantages of simplicity, high efficiency and intelligence. It meets the requirements of effective sharing and smooth transmission of tolerance information between heterogeneous CAX systems, conforms to the top-down thinking habits of designers, has astrong applicability, and ensures the compatibility with computers.

The invention relates to an Android micro-service recommendation method and system based on a user scene. The Android micro-service recommendation method comprises the following steps of extracting user scene information, and based on the extracted user scene information, searching for services related to the user scene information in a service library, and recommending the services to the user. According to the method, the content currently browsed by the user is obtained, and then the related application service is recommended to the user according to the content.

The invention discloses a method and a system for analyzing the power loss risk of a power distribution network based on a comprehensive weighted power supply path index. The method and the system reflect the risk of load loss of nodes of the power distribution network by establishing a comprehensive weighted power supply path index. The method comprises the steps of: extracting topology and electrical information of a power distribution network, and establishing an adjacency matrix according to the active power flow direction; establishing a active power flow direction tree model, and weighting edges in the flow tree model by using line impedance; according to the active power flow direction tree model, obtaining a power supply path from a positive power set to a negative power set according to a depth-first or breadth-first search algorithm; and finally, comprehensively considering the node load capacity, the node load power supply, the transfer path and the power supply robustness relative factor, and establishing a comprehensive weighted power supply path index model of each node. The state of each power distribution network is updated, the process is calculated circularly, and the relative power loss risk of the load nodes is compared and analyzed quickly.

The invention discloses equipment for rapidly killing coronavirus by plasmas through electromagnetic field cyclotron acceleration, which overcomes the problem of poor killing effect caused by the fact that the plasmas of air killing equipment in the prior art are limited by the equipment volume and lack of large energy, and comprises an ionization module, a polarity separation module and a virus filter, the polarity separation module is arranged behind the ionization module, and the virus filter is arranged behind the polarity separation module; an electromagnetic ion cyclotron acceleration module is also arranged between the polarity separation module and the virus filter; the electromagnetic ion cyclotron module is symmetrically arranged, the electromagnetic ion cyclotron module comprises a high-energy ion cyclotron, an ion circular motion area is arranged on the high-energy ion cyclotron, a slit used for accelerating positive ions/negative ions is formed in the ion circular motion area in a penetrating mode, and the slit has potential difference. According to the invention, the electromagnetic ion cyclotron acceleration module and the slit are adopted to accelerate ions, so that the energy of the ions simultaneously meets the effectiveness of virus killing and the safety to people.

The invention provides an amphiphilic polymelphalan prodrug micelle and a preparation method thereof, and belongs to the technical field of preparation of pharmaceutical preparation. The method comprises the following steps: using melphalan and a polymer end-capping reagent as raw materials and DCC/HOBT or DCC/DMAP as a condensing agent, mixing, adding anhydrous DMF and a molecular sieve, and reacting at room temperature for 2 days under anhydrous and anaerobic conditions to obtain a reaction solution; dialyzing, purifying and freeze-drying the reaction solution to obtain an amphiphilic polymelphalan prodrug micelle, wherein the molar ratio of the melphalan to the polymer end-capping reagent is (10-50): 1, the molar ratio of the melphalan to the DCC to the HOBT is 1: 1: 1, or the molar ratio of the melphalan to the DCC to the DMAP is 1: 1: 0.2. The polymelphalan prodrug micelle capable of accurately regulating and controlling the drug loading rate is constructed by adopting a one-stepmethod, the operation is simple, the reaction temperature is relatively low, the cost is low, the structure is controllable, and the polymelphalan prodrug micelle is suitable for industrial production.

The invention relates to an equipment compartment frame of a power control module of a wind turbine. The frame includes a polygonal beam structure (17) in one plane and a plurality of standing beams (18) attached to the polygonal beam structure (17) at at least some of the corners of the polygonal beam structure (17). According to the invention, each standing beam (18) is attached to the polygonal beam structure (17) by means of a releasable joint (26, 27, 28). The invention also relates to methods for transporting and assembling such frames.

The invention provides an in-situ induction heating device for neutron diffraction measurement. An induction heating technology is introduced into high-temperature loading of the device, and open type high-temperature loading and direct and accurate measurement of sample strain can be carried out on a sample in a neutron diffraction experiment; since an induction coil is of an open type heating structure, barrier-free penetration of measured neutrons in a full-angle range can be basically realized, a high-temperature extensometer for strain measurement can carry out contact type direct measurement on the sample, the reliability and effectiveness of loaded strain data in a neutron measurement process can be met, meanwhile, the loading and unloading simplicity and convenience of the device, the sample and the extensometer are ensured. The device is used in cooperation with a neutron diffraction stress spectrometer and a mechanical loading device, neutron stress distribution measurement of a metal material under the conditions of high temperature and force loading can be completed, and a testing means is provided for revealing research on mechanical properties and damage and fracture mechanisms of the material.

The invention discloses a preparation method of silicon oxide aerogel with grade gradient pores for efficient water evaporation. The silicon oxide aerogel with the grade gradient pores is obtained through the steps of preparing a urea-hexadecyl trimethyl ammonium bromide solution with a specific pH value, adding tetraethoxysilane, gelatinizing and the like. The preparation method of the silicon oxide aerogel with the grade gradient holes for efficient water evaporation has the advantages of low cost, easiness in operation and capability of being amplified; compared with wood and sponge porous materials, the silicon oxide aerogel with grade gradient pores synthesized by the method disclosed by the invention can effectively balance thermal management and water management in a photo-thermal water evaporation process, and the photo-thermal conversion efficiency is remarkably improved.