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75 results about "Computability" patented technology
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Computability is the ability to solve a problem in an effective manner. It is a key topic of the field of computability theory within mathematical logic and the theory of computation within computer science. The computability of a problem is closely linked to the existence of an algorithm to solve the problem.
Method and structure for self-sealed joint proof-of-knowledge and diffie-hellman key-exchange protocols
InactiveUS20100205443A1Robust resistance against malicious disclosureImproving security and privacy and efficiencyUser identity/authority verificationSecret communicationDiffie–Hellman key exchangeCryptographic protocol
A method (and structure) for a party (the prover) to prove its knowledge, jointly and non-malleably, of multiple secret (fixed and / or ephemeral) Diffie-Hellman exponents (DH-exponents), corresponding to its public (fixed and / or ephemeral) DH-components and with respect to the public (fixed and / or ephemeral) challenging DH-components from another party (the verifier). The joint proof-of-knowledge (JPOK) consists of secrets made by multiplying multiple DH-secrets, which can be generated and verified by each party by its own secret DH-exponents and the public DH-components of both parties. To ensure the non-malleability of the JPOK, the method invented herein makes all these multiplied DH-secrets to be independent, and makes the session-tag committed to the multiplied DH-secrets. To preserve players' privacy and / or to improve protocol efficiency, the invented method makes the DH-secrets to be multiplied to further satisfy at least one of the following (besides above independence and commitments properties): (1) Deniability: all the DH-secrets to be multiplied can be computed out merely from the ephemeral secret DH-exponents and the public DH-components of both parties; (2) Pre-computability: a DH-secret involving a fixed DH-component of a party can be offline pre-computed by its peer; (3) Post-ID computability: a DH-secret involving an ephemeral DH-component of a party can be computed by its peer without knowing that party's identity and / or fixed DH-components. The secrets made by multiplying multiple DH-secrets can then be used to derive session-keys and to generate and verify authenticators between the parties. The invented method can also be used in parallel or subsequently by the parties, possibly with reserved player roles in different runs of the method, for mutual identifications, key confirmations, and for achieving more advanced cryptographic protocols in various settings.
Owner:ANDREW C YAO
Method for determining the computability of data for an active multi-dimensional cache in a relational database management system
InactiveUS6763357B1Substantial performance improvementFew structuresData processing applicationsMulti-dimensional databasesData matchingRelational database management system
An "active cache", for use by On-Line Anaytic Processing (OLAP) systems, that can not only answer queries that match data stored in the cache, but can also answer queries that require aggregation or other computation of the data stored in the cache.
Owner:TERADATA US
Method for designing energy-saving type circulating cooling water system
ActiveCN102542120AGuaranteed uptimeGood at computingSpecial data processing applicationsHigh energyExchange network
The invention belongs to the technical field of circulating cooling water energy saving, and more particularly relates to a method for designing an energy-saving type circulating cooling water system. The method comprises the following steps of: drawing a circulating cooling water system and heat exchange network flow chart, acquiring technical parameters and heat load values of each heat exchange equipment, determining operation working conditions and environmental parameters of collecting points, and carrying out collection; judging reasonability of the heat exchange equipment or a heat exchange network layout, and acquiring a minimal heat exchange amount through calculation; analyzing, judging and determining high energy consumption reasons simultaneously; through optimization as well as diagnosis and analysis of high energy consumption reasons, judging reasonability of a water distribution pipe network layout, and acquiring pipeline characteristics of each branched loop and partial resistance-abnormal nodes; and calculating and designing water pump impellers by adopting a three dimensional flow technology method. The method provided by the invention has the characteristics of reasonable route design, good computability and scientificity of design parameters, accurate data, high operation heat efficiency, high economical value, good social benefits and capability of saving expenses and energy cost.
Owner:浙江科维节能技术股份有限公司
Method and structure for self-sealed joint proof-of-knowledge and diffie-hellman key-exchange protocols
InactiveUS8464060B2Robust resistance against malicious disclosureImproving security and privacy and efficiencyUser identity/authority verificationSecret communicationDiffie–Hellman key exchangeComputer science
Owner:ANDREW C YAO
Apatite/keratin composite scaffold and preparation method thereof
The invention discloses an apatite / keratin composite scaffold and a preparation method thereof. The preparation method includes: precipitating apatite and keratin in aqueous solution to obtain precipitation of an apatite and keratin composition, flushing, filtering and freezing to dry the precipitation so as to form the apatite / keratin composite scaffold. The apatite / keratin composite scaffold has excellent biological property, such as biological computability, cellular affinity, biodegradability and morphological stability. Owning to the microstructure of the apatite / keratin composite scaffold, good attachment and multiplication of osteoblasts on the scaffold can be improved, guiding for regeneration of bone tissues is facilitated, and ultimate biodegradation is formed along with generation of new bone tissue. The preparation method is easy, and the apatite / keratin composite scaffold is prepared from raw materials in wide source, and is a novel artificial bone material with excellent bone induction performance and wide application prospect.
Owner:THE HONG KONG POLYTECHNIC UNIV
Visual modeling editor for constructing system model
ActiveCN105302532AOperationalVersatilitySpecific program execution arrangementsSoftware systemSimulation
The invention discloses a system meta-model based visual modeling editor for constructing a system model. The editing of the system model and a system view is finished by taking a hierarchical model, an interface model, an algorithm model, a process model, a transmission model and a corresponding view as editing objects through a hierarchical editor, an interface editor, an algorithm editor, a process editor and a transmission editor. A visual system modeling tool with the advantages of computability, universality and usability is provided for various fields. The system model and the system view constructed by the editor are explicit in structure, adjustable in hierarchy and controllable in modeling granularity, and have computable full consistency. Methods are unified, so that top-down analysis design and bottom-up integration are convenient, and the editor is suitable for modeling various systems including software systems and information systems in various application environments. The modeling method is simple and complete in visual modeling, so that even personnel in general fields can independently and easily edit the system model and the system view.
Owner:CHENGDU PUZHONG SOFTWARE CO LTD
Method and device for producing a thread made from a plurality of individual filaments and monofilament thread produced through the method
InactiveUS20120144795A1Simple numerical computabilityHigh strengthPhysical treatmentWoven fabricsWork in processSolvent
The invention relates to producing threads that are suitable for further processing into textile fabrics and / or semi-finished products made from the threads, wherein the fabrics and products are characterized by high strength, simple numerical computability of mechanical load conditions and low resin consumption. To achieve this, the invention proposes a method for producing a thread which includes a plurality of individual filaments individually supported at a distance from one another and coated with a flowable resin which includes a solvent and can be crosslinked under the effect of at least one physical variable and / or one chemical substance. The coated individual filaments are subsequently compacted so that a composite is formed which includes the individual filaments and the resin continuously surrounding them and which is free of gas pockets. The solvent included in the resin is expelled from the composite during a drying process. Subsequently, the composite, presently a monofilament thread, is wound up in a non-crosslinked state of the resin. All individual filaments are aligned unidirectionally during all steps of the method. The invention further relates to a device to perform the method and a monofilament thread produced with the device.
Owner:KNAPPE FALSAL
Amphibious robot applied to submarine cable operational maintenance
InactiveCN107344607AImprove compatibilityGood upgradeabilityAmphibious vehiclesCable installation apparatusOcean bottomControl system
The invention provides an amphibious robot applied to submarine cable operational maintenance. The system compositions of the amphibious robot applied to submarine cable operational maintenance mainly comprise an underwater carrier system, an on-water launching and recovery system, a control system and a power and assistance subsystem. An amphibious robot carrier is used for submarine cable operational maintenance, and the amphibious robot carrier has good computability and upgradability and is adaptable to work in different sea areas under different sea conditions. The amphibious robot carrier completes daily patrol, fault locating and eliminating, cable grabbing and finishing and cable flushing burying work of the submarine cables through cooperation with multiple kinds of detection instruments, devices and sensors. The amphibious robot is suitable for submarine cable operational maintenance.
Owner:HULUDAO POWER SUPPLY COMPANY OF STATE GRID LIAONING ELECTRIC POWER
HUCC-based flexible interconnection multi-microgrid control method and system
InactiveCN108183477AIncrease flexibilityImprove coordinationSingle network parallel feeding arrangementsMicrogridControl system
The invention provides a hybrid-unit-of-common-coupling-based flexible interconnection multi-microgrid control framework and method. The hybrid unit of common coupling comprises energy regulating equipment, a common connection bus, an AC bus connected with the common connection bus, an AC circuit breaker used for being connected with a public network, a DC bus, a modular multilevel converter and aDC circuit breaker used for being interconnected with sub-microgrids. The flexible interconnection multi-microgrid system control framework comprises a center layer, an interface layer, a microgrid layer and a multi-microgrid control system. According to the control framework and method, the computability and the control capacity of the DC unit can be fully exerted so that the control dimension can be extended, access of the distributed power supplies can be optimized and the flexibility and the coordination of the flexible interconnection multi-microgrid can be enhanced.
Owner:SHANGHAI JIAO TONG UNIV
Compact text-to-phone pronunciation dictionary
InactiveUS7080005B1Efficient formationReduce vocabularyNatural language data processingSpeech recognitionTime compressionByte
A typical English pronunciation dictionary takes up to 1,826,302 bytes in ASCII to store. A five times compression while maintaining computability is achieved by prefix delta encoding of the word and error encoding of the pronunciation.
Owner:TEXAS INSTR INC
Method and apparatus for communication on non-authorized frequency band
The invention brings forward a method and apparatus for communication on a non-authorized frequency band. For the purpose of solving the problem of interference generated when different service provider devices are disposed at the same non-authorized frequency spectrum, a base station sends one or two from a first signaling indication positive integer N and a rational number R on first carrier waves, wherein the R is not smaller than 0 and not greater than 1, the N is used for identifying a continuous subframe number occupied by physical signals processed by the base station on the first carrier waves on a time domain, and the R is used for identifying the proportion which subframes scheduled by the base station account in subframes of a given time window; and a base station adjacent to the base station, according to the N, helps to determine scheduling subsframes available on the first carrier waves, the adjacent base station, according to the R, helps to determine the number of the scheduling subframes available in the given time window on the first carrier waves. According to the scheme provided by the invention, a conventional sequence or signaling is reused as much as possible for indicating a first signaling so that the computability with a conventional system is maintained to a maximum degree.
Owner:SHANGHAI LANGBO COMM TECH CO LTD
Method for preparing wood adhesive using cassava starch hydrolyzed sugar
ActiveCN103665288ALow costLong storage timeAldehyde/ketone condensation polymer adhesivesEnvironmental resistanceAdhesive
The invention discloses a method for preparing a wood adhesive using cassava starch hydrolyzed sugar. The method is characterized in that the wood adhesive is synthesized from cassava starch hydrolyzed sugar, urea, formaldehyde and melamine under a specific process condition, wherein urea is quantitatively added at three times; pH is modified according to mediate strong acid (4-4.5), weak base (7.5), weak acid (5.0), and weak base (7.5) in sequence during preparation. The adhesive product is low in cost, long in storage time, and relatively high in cost performance, integrates use performance and environmental protection performance, shows a good computability with the existing production process of artificial boards, and can be used for replacing the existing widely used urea resin and melamine formaldehyde resin wood adhesive.
Owner:GUANGXI UNIV
Visual software modeling method for constructing software view on basis of software meta view
ActiveCN105320504AComputableClear structureGeometric CADVisual/graphical programmingGranularityUsability
Owner:CHENGDU PUZHONG SOFTWARE CO LTD
System and method for join-partitioning for local computability of query over shared-nothing clusters
ActiveUS8156107B2Reduce disk-usageSpeeding up query processingDigital data processing detailsSpecial data processing applicationsData miningDependency relation
The present invention addresses the problem of partitioning database relations across a plurality of hosts in a shared-nothing cluster while minimizing communication costs. A new partitioning approach for database relations—join-partitioning—is introduced that focuses on relations and their dependencies to a priori partition the plurality of relations to the plurality of hosts such that each host can locally compute a large class of queries over its partitioned data in isolation at query time, independent of other hosts in the cluster. Such an approach thus overcomes the primary bottleneck, i.e., the network, in deploying database systems over shared-nothing clusters by allowing them to seamlessly scale linearly to tens of thousands of hosts and manage tens or hundreds of terabytes of data.
Owner:TERADATA US
System and method for obtaining information about biological networks using a logic based approach
InactiveUS20100299289A1Efficient solutionEffectively scaledDigital computer detailsSystems biologyConcept developmentStructure function
A system and method of obtaining information concerning the structure-function relationship of biological networks can be studied holistically through the ensemble characterization of all the networks that realize a given biological function. A logic-based approach enables significant advances in computability and concept development (minimality and reducibility). The approach is applied to a biologically relevant trajectory and reveals some interesting properties. By using the approach, a cell cycle network is decomposed into three components with the functioning of each component explained.
Owner:GEORGE WASHINGTON UNIVERSITY
Method for preparing modified cellulose immobilized lipase
InactiveCN105821028AEasy to operateMild operating conditionsHydrolasesOn/in organic carrierFiberFreeze-drying
The invention discloses a preparation method of modified cellulose immobilized lipase, and belongs to the field of lipase preparation. In the invention, bamboo shoots are used as raw materials, and bamboo shoot fibers are prepared by acid-soluble enzymolysis, then alkalized with sodium hydroxide, oxidatively modified by the catalysis of hydrogen peroxide and copper, and finally impregnated and solidified by vacuum freeze-drying. Thereby, the preparation method of the modified cellulose immobilized lipase is obtained. The method of the invention is unique and novel, and the preparation process is simple and feasible. It not only utilizes the spatial structure and flexibility of cellulose, but also has a large number of free hydroxyl groups. The functional group is covalently bonded, has excellent compatibility, and does not affect the activity and reaction ability of the enzyme, improves the binding rate and specific activity of the enzyme, has a huge binding capacity, and is suitable for large-scale application.
Owner:CHANGZHOU C PE PHOTO ELECTRICITY SCI & TECHN
Non-Deterministic Secure Active Element Machine
ActiveUS20150186683A1Computing performance that isDigital data processing detailsAnalogue secracy/subscription systemsIntellectual propertyComputation process
Based upon the principles of Turing incomputability, connectedness and novel properties of the Active Element Machine, a malware-resistant computing machine is constructed. This new computing machine is a non-Turing, non-register machine (non von-Neumann), called an active element machine (AEM). AEM programs are designed so that the purpose of the AEM computations are difficult to apprehend by an adversary and hijack with malware. These methods can also be used to help thwart reverse engineering of proprietary algorithms, hardware design and other areas of intellectual property.Using quantum randomness, the AEM can deterministically execute a universal Turing machine (universal digital computer program) with active element firing patterns that are Turing incomputable. In an embodiment, a more powerful computational procedure is created than Turing's computational procedure (equivalent to a digital computer procedure). Current digital computer algorithms and procedures can be derived or designed with a Turing machine computational procedure. A novel computer is invented so that a program's execution is difficult to apprehend.
Owner:AEMEA
Preparation method of organic/inorganic silicon composite modified waterborne polyurethane extinction resin
InactiveCN106752851AGood mattingImprove thermal stabilityFireproof paintsPolyurea/polyurethane coatingsEmulsionThermal stability
The invention relates to a preparation method of organic / inorganic silicon composite modified waterborne polyurethane extinction resin, and belongs to the field of coating industry. Organic silicon substituting part of polyether polyol reacts with diisocyanate under the action of a catalyst, a chain is extended by using a hydrophilic chain extender, then inorganic silicon is introduced, the solution is neutralized by using a salt forming agent, and the extinction resin is obtained after termination the chain extender, wherein the inorganic silicon stably exists in the system under the action of a stabilizer. The organic silicon having the characteristics of low surface energy and poor computability with waterborne polyurethane is introduced into the waterborne polyurethane system in a copolymerization manner and migrated to the surface in the film forming process of emulsion, thereby achieving the effects of microscopic roughness and extinction; and the inorganic silicon is simultaneously introduced to further reduce the glossiness, so that the thermal stability of the resin is improved. The preparation method is simple, safe, environment-friendly and relatively low in cost, and has relatively high industrial application values.
Owner:BEIJING INSTITUTE OF TECHNOLOGYGY
Development stage division method for power grid
ActiveCN102570447AEasy to divideThe concept of the method is simple and clearEmergency protective circuit arrangementsAc network circuit arrangementsSimulationPower grid
The invention provides a reliability-index-based development stage division method for a power grid, and belongs to the field of analysis and computation of a power system. The reliability-index-based development stage division method for the power grid comprises the following steps of: establishing a power grid data model for the simulation computation of the power system; determining a fault rate, a repair rate and failure clearing time; performing the simulation computation; and analyzing a simulation result. The method is simple and clear in concept, high in computability and wide in applicability; and the development stages of various specific power grids can be conveniently divided to guide the development planning of the power grids.
Owner:CHINA ELECTRIC POWER RES INST +1
Apple vinegar health care beverage for reducing blood fat and preparation method thereof
ActiveCN103211256AImprove bitter tasteImprove convenienceMicroorganism based processesVinegar preparationFruit juiceMedicine
The invention discloses apple vinegar health care beverage for reducing blood fat. The apple vinegar health care beverage for reducing blood fat is prepared from the following raw materials of: 0.2-0.5% of hawthorn extract, 0.1-0.3% of rhizome alismatis extract, 0.1-0.3% of poria cocos extract, 0.2-0.5% of kudzu root extract, 1.5-4% of apple original vinegar, 2-4% of concentrated apple juice, 0.4-1% of concentrated hawthorn juice, 0.2-0.8% of honey, 0.01-0.025% of sucralose and balance of water. According to the apple vinegar health care beverage for reducing blood fat, reasonable computability is carried out on extracts of four traditional Chinese medicines, namely hawthorn, rhizome alismatis, poria cocos and kudzu root, with the effects of helping digestion, removing stasis, replenishing qi and reinforcing spleen, activating blood and dissolving stasis in scientific proportion and auxiliary materials such as apple original vinegar, apple juice, hawthorn juice and honey, and a natural sweetener sucralose is added for seasoning, so that taste requirement of people suffering from hyperlipidemia to delicious food is met, and the health care effect of reducing blood fat is achieved by utilizing nourishing and conditioning effects on a human body and nutrition replenishing comprehensive effect of fruit juice and fruit vinegar.
Owner:河南省淼雨饮品股份有限公司
Power grid planning method based on dynamic reliability probability index of power grid
ActiveCN107181253APrevent defeatImprove guidanceResourcesInformation technology support systemElectric power systemShort terms
The invention provides a power grid planning method based on a dynamic reliability probability index of a power grid. The method comprises: determining a pre-selection planning design scheme and inputting a parameter; carrying out load flow calculation of normal operation of a power system and simulating fault system transient stability calculation; checking a fault shedding load capacity; carrying out reliability probability index calculation on an event causing security loss of a power grid; carrying out comparison and selection of optimization schemes comprehensively to obtain a final grid planning scheme. With the method provided by the invention, the optimal scheme enables a power accident caused by a fault shedding load capacity to be avoided; and a phenomenon that a planning scheme that only needs to use or adjust security control measures fail to be selected can be prevented to a certain extent. Meanwhile, the short-term grid planning method based on the dynamic reliability probability index of the grid has the great practical guidance significance and application value. The method having high computability and wide adaptability is suitable for dynamic reliability evaluation of the large-scale power system and can be used as a main analysis tool for a scheduling operation and plan design department.
Owner:CHINA ELECTRIC POWER RES INST +3
Secure active element machine
ActiveUS20120198560A1Simple and safe processComputing performance that isDigital data processing detailsAnalogue secracy/subscription systemsComputational problemComputation process
Based upon the principle of Turing incomputability, and novel properties of the Active Element Machine, a malware-resistant computing machine is constructed. This new computing machine is a non-Turing, non-register machine (non von-Neumann), called an Active Element Machine (AEM). AEM programs are designed so that the purpose of the computation is difficult to apprehend by an adversary and hijack with malware. These methods can help hinder reverse engineering of proprietary algorithms and hardware design.Using quantum randomness, the AEM can deterministically execute a universal digital computer program with active element firing patterns that are Turing incomputable. In some embodiments, a more powerful computational procedure is demonstrated than Turing's computational procedure (digital computer procedure). Current digital computer algorithms can be derived or designed with a Turing machine computational procedure. A novel class of computing machines is built where the purpose of the program's execution is difficult to apprehend (Turing incomputable).
Owner:AEMEA
Phosphate melamine salt type nitrogen and phosphorus intumescent flame retardant as well as preparation method and application thereof
PendingCN106674592AThe synthesis process is simpleThe application development prospect is greatGroup 5/15 element organic compoundsPhosphateMoisture
The invention discloses a phosphate melamine salt type nitrogen and phosphorus intumescent flame retardant as well as a preparation method and application thereof. The preparation method comprises the following steps: (1) performing a reaction on hexamethylol melamine and phosphorus oxychloride in the introduction of an inert gas at minus 10 DEG C to 10 DEG C so as to generate a nitrogen and phosphorus containing intermediate HTP; and (2) dissolving the HTP and melamine into water, performing a reaction at 50-100 DEG C, adjusting the pH value to be neutral, cooling to the room temperature, filtering, washing, and drying, thereby obtaining the phosphate melamine salt type nitrogen and phosphorus intumescent flame retardant. By adopting the phosphate melamine salt type nitrogen and phosphorus intumescent flame retardant, a carbon source, an acid source and a gas source are integrated, the defects that a conventional mixed intumescent flame retardant is low in computability and liable to absorb moisture can be overcome, the tedious feeding process in application can be also alleviated, and another idea is provided for structural design of an intumescent flame retardant. In the process that a silicon rubber composite material is processed and prepared, the intumescent flame retardant is high in computability with silicon rubber, high in machining property and simple and feasible in preparation method, and an obtained composite material is high in flame retardancy.
Owner:SOUTH CHINA UNIV OF TECH
Soft plasticizer
InactiveCN104893219AShorten the production cycleReduce energy consumptionGlycidyl methacrylateBenzene sulfonate
The invention discloses soft plasticizer, comprising 15 to 18 parts of fatty acid methyl ester sulfonate, 15 to 20 parts of soybean oil fatty acid, 10 to 15 parts of sodium aliphatate, 8 to 12 parts of sodium alkyl benzene sulfonate, 10 to 12 parts of tributyl citrate, 10 to 15 parts of diethylene glycol dibenzoate, 8 to 15 parts of trioctyl trimellitate, 5 to 8 parts of glycidyl methacrylate, 5 to 6 parts of sorbic acid, 10 to 12 parts of sodium benzoate, 6 to 8 parts of citric acid, 10 to 12 parts of acetic acid, 3 to 4 parts of glycol dimethyl ether, 8 to 10 parts of n-butyl alcohol, 10 to 15 parts of p-bromoacetophenone, 4 to 5 parts of methyl pyrrolidone, 3 to 5 parts of polyisoprene, 5 to 8 parts of isooctyl alcohol, and 6 to 8 parts of epoxy acrylate. The soft plasticizer is nontoxic and green, meets the application requirements, and is fast to produce, low in energy consumption, good in computability, high in plasticizing efficiency and good in durability.
Owner:梁胜光
Double-screen or multi-screen tiled display method and system
ActiveCN104363521AExpand the horizontal display spaceOmit interaction logicTelevision system detailsColor television detailsClient-sideComputer engineering
The invention discloses a double-screen or multi-screen tiled display method and system. Specifically, the method is characterized in that subtitles are entered through an input interface of a client, the client transmits the subtitles to a server, the server encodes the subtitles and transmits the encoded subtitles to two or multiple browsers, and the browsers connect to the server, receive subtitle streams and analyze and display them as scroll subtitles. The left browser and the right browser receive the subtitle streams at the same time; the left browser delay-displays the analyzed subtitles. The double-screen or multi-screen tiled display method and system according to the technical scheme has the advantages that interaction logic of the server and the client is omitted, the client computability is good, and development cost is low.
Owner:ALIBABA (CHINA) CO LTD
3D engine compatibility test method and device
ActiveCN103902444APinpoint compatibility issuesAvoid blindnessSoftware testing/debuggingGraphicsGraphic card
The invention discloses a 3D engine compatibility test method and device. The method includes: acquiring Caps information of a 3D engine; comparing the Caps information of the 3D engine with pre-stored Caps information in a database; positioning and analyzing problems according to comparison results. According to the method, Direct3D API used by the 3D engine is intercepted to acquire Caps information used by the 3D engine, the Caps information is compared with the Caps information having graphics cards already in the database, the graphics cards which may have the compatibility problem are predicted accurately, the blindness of selecting the graphics cards to be tested is avoided, test cycle is shortened effectively, and manpower and time costs are saved; meanwhile, the range of analysis and positioning is narrowed effectively, and the causes of the computability problem in the graphics cards are positioned accurately.
Owner:TENCENT TECH (SHENZHEN) CO LTD
Single-side suede preparation method of crystal silicon solar cell
ActiveCN107910386AReduce consumptionReduce manufacturing costPhotovoltaic energy generationSemiconductor devicesSilicon solar cellSurface structure
The invention discloses a single-side suede preparation method of a crystal silicon solar cell. The method comprises the following steps: S1, laminating each two silicon wafers to obtain a firmly attached laminated structure, and inserting the laminated structure into a silicon wafer flower basket; S2, directly placing the silicon wafer flower basket in suede making liquid to perform a suede making process so as to obtain suede on the two surfaces of the laminated structure; and S3, separating the laminated structure to obtain silicon wafers with single-side suede. The preparation method disclosed by the invention is simple in process, only the necessary suede is formed on the outer surface, the complex suede making process on the respective back surfaces of the laminated silicon wafers can be avoided, and the computability of the back surface structure subjected to simple polishing treatment with the existing industrial production process is good; and in the case of equivalent processsteps, the roughness of the back surfaces of the silicon wafers can be reduced, the compounding of the back surfaces of the silicon wafers is greatly reduced, the service lives of the surfaces of thesilicon wafers after the suede making are prolonged, and thus the photoelectric conversion efficiency is improved.
Owner:JIA XING SHANGNENG PHOTOVOLTAIC MATERIALS SCI & TECH CO LTD
Wireless sensor network node location method based on mobile robot assistance
ActiveCN106131955ARealize dynamic positioningHigh positioning accuracyNetwork topologiesLocation information based serviceWireless mesh networkWireless sensor network
The embodiment of the invention discloses a wireless sensor network node location method based on mobile robot assistance, and belongs to the field of wireless sensor network node location. A mobile robot and a wireless sensor network are combined; a robot-node, and node-node collaborative location mode is employed, the maneuverability of the mobile robot and the computability of wireless sensor network nodes are utilized fully, a Gaussian mixture cubature Kalman filterGM-CKF algorithm is fused, and therefore, dynamic location of the nodes is realized. According to the collaborative location method provided by the embodiment of the invention, the locations of the nodes can be estimated; through adoption of the GM-CKF algorithm, the bad influence resulting from high non-linearity and anomalous errors can be effectively overcome, the errors resulting from system filtering divergence are reduced, and the node location precision is improved.
Owner:ANHUI UNIVERSITY OF TECHNOLOGY AND SCIENCE
Weak gel for drilling fluid and preparation method of weak gel
ActiveCN104559961AIncrease shear forceGood ability to carry cuttingsDrilling compositionUltraviolet lightsSlurry
The invention provides a weak gel for a drilling fluid and a preparation method of the weak gel. The weak gel is characterized by being prepared by sequentially adding natural modified plant gel, acrylamide, N,N-dimethacrylamide, a nonionic fluorocarbon surfactant, diacetone-acryloamide and sodium carbonate under normal temperature conditions, adjusting the pH value to be 8-9, introducing nitrogen to deoxidize, adding an initiator, implementing polymerization reaction under radiation of ultraviolet light, and drying, thereby preparing a finished product. The weak gel provided by the invention is good in temperature resistance property and tackification and lifting cutting effect, can be used in a horizontal well to improve the property of the drilling fluid in carrying rock debris, can solve the problem of static sand suspension and dynamic sand carrying in a horizontal well section, is additionally good in computability and is applicable to light slurry and salt water slurry, and a reservoir stratum can be protected and is slightly damaged.
Owner:BEIJING SHIDABOCHENG TECH
Modified nano carbon material, carbon material/polymer composite material and preparation method thereof
InactiveCN106009466AOptimal Control StructureGood compatibilityDispersityPolycyclic aromatic hydrocarbon
The invention provides a modified nano carbon material, a carbon material / polymer composite material and a preparation method thereof. According to the preparation method, under the action of a non covalent bond, a nano carbon material is subjected to surface modification on, so that, the dispersity of the nano carbon material on a polycyclic aromatic hydrocarbon end-sealed polymer and the computability with the polymer can be improved, the interface action force of the nano carbon material and the polymer can be increased, and furthermore the mechanical property of the carbon material / polymer composite material can be remarkably improved. Meanwhile, the carbon material / polymer composite material is good in conductivity and relatively low in percolation threshold. The modified nano carbon material, the carbon material / polymer composite material and the preparation method have the advantages that the polycyclic aromatic hydrocarbon end-sealed polymer has a florescent property, the structural completeness of the nano carbon material can be kept, the prepared polycyclic aromatic hydrocarbon end-sealed polymer is excellent in property, and the preparation method is convenient, simple, low in cost and applicable to a wide range, and moreover, industrialization can be easily achieved.
Owner:HUNAN UNIV
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