44results about How to "Solve tough problems" patented technology

The present invention discloses a identity-based authentication group key management method which comprises the following steps: embedding ID into key with bilinear pairing in elliptic curve; generating Ci as part of main key ui according to the secret key and ID of group member ui by key generating center, and transmitting the Ci to ui through overt channel; generating main key according to Ci and its own secret key by each group member ui; calculating overt key verification information according to Hash value of main key and over key by each group member, and broadcasting the link between over key and verification information inside the group; calculating the secret value sharing with left and right neighbors when the received information is verified to be true by each group member, and calculating the group member information Xi included in group session key according to the secret value, and then broadcasting the Xi inside the group; calculating group session key K according to all Xj, j=1, ...,n, by each group member. The invention has the advantages of no key escrow and no need of secure channel, which can be applied in coordination and distributed network as secure reliable group communication.

The invention relates to an electrical equipment operation condition classification method, which comprises the steps of building training data of a mean clustering model; pre-processing the training data, deleting invalid data and carrying out normalization processing; adopting a K-means++ algorithm for determining an initial clustering center; determining upper and lower limitations of clustering classification categories; circularly realizing a clustering process of multiple categories; carrying out evaluation analysis on a clustering result, and determining an optimal clustering category number K value; selecting an optimal K value model as an optimal condition classification result, so that the efficiency and the accuracy are improved.

The invention discloses a hyper-gravity reactor and a reaction method. The hyper-gravity reactor is provided with two liquid inlets. Two liquid inlets are respectively connected to responding liquid distributors. The spraying pipes of two liquid distributors are separated and arranged on concentric rings, which take the middle shaft of a rotation bed as the center. The reaction method comprises the following steps: feeding a reaction material and a catalyst or two reaction materials into the hyper-gravity reactor from the two liquid inlets, then spraying the reaction material and the catalyst or two reaction materials on the internal edges of rotating filling materials or solid catalysts from two individual spraying pipes so as to mix the reaction material and the catalyst or two reaction materials, carrying out reactions by contacting the reaction material and the catalyst or two reaction materials, or carrying out reactions by contacting the mixture with gas. The structure and distribution of the liquid inlets and spraying pipes of the hyper-gravity reactor are both improved so as to mix the liquid catalyst and liquid reactant in a hyper-gravity field, because the mixing effect is good in a hyper-gravity field. At the same time the problems of the post treatment for separating the liquid catalyst and the liquid products are also solved and simplified.

The invention relates to the technical fields of traffic engineering and civil engineering, and discloses a public traffic system and a construction method thereof. The public traffic system comprises at least one of the following systems of a lane traffic system (2) and an overhead track traffic system (3). The public traffic system is characterized in that the lane traffic system (2) or the overhead track traffic system (3) comprises an intersection node commercial traffic hub transfer building (4); crossings are intersection nodes of lanes (21); the lanes (21) comprise at least one type of motor vehicle lanes (21.1), non-motor vehicle lanes (21.2), ground walkways (21.3), overpasses (22) and tunnels (23); and the intersection node commercial traffic hub transfer building (4) is arranged in at least one of the following lane (21) crossing positions of crossing centers, crossing corners, interiors and exteriors of crossing edges, parts above the crossings, and parts below the crossings. The public traffic system needs a small investment or does not need a government investment, allows low operation and maintenance costs, has a short construction period, and can fully develop subway functions of a high speed and a large passenger transport amount. Therefore, the public traffic system perfectly solves public traffic problems.

The invention discloses a low-alloyed degradable miniature inner fixed assembly, a magnesium alloy preparation method and a magnesium alloy material. The low-alloyed magnesium alloy material which ismicro in impurity content and low in degrading rate is obtained by means of the preparation methods of smelting, solution heat treatment and the like. Different strength and plasticity are matched bymeans of adjusting and rolling and post-rolling annealing process of the magnesium alloy material, so as to prepare medical implant miniature inner fixed assemblies which have different demands on strength and plasticity.

The invention relates to a flavor fish product and a making method thereof. The method provided by the invention comprises the steps of: raw material treatment, curing, fermenting, drying, packaging and sterilizing. The method applies different strains, like lactobacillus plantarum and yeast to fermentation of fish so as to obtain a natural sweet and sour flavor product, and mixing the product with lemon juice and honey. The product is unique in flavor, and is nutritive and healthy. Compared with traditional dried products, the fermented dried fish has reduced fleshy roughness, more delicate taste, higher moisture content, and extended shelf life, and is more conducive to product circulation.

The invention provides a magnetic attraction type self-adapting wall surface moving robot. The magnetic attraction type self-adapting wall surface moving robot comprises a bottom plate and driving devices. A plurality of magnetic rolling wheels are all hinged to the bottom plate, the driving devices are mounted on the bottom plate and connected with the magnetic rolling wheels so as to drive the magnetic rolling wheels to rotate. The magnetic attraction type self-adapting wall surface moving robot is attracted on the wall surface through magnetic force between the magnetic rolling wheels and the wall surface, attraction force is large, and thus falling is avoided; the attraction mode is simple and convenient, attraction is conducted directly through the magnetic force between the multiplemagnetic rolling wheels and the wall surface, and other attraction devices do not need to be additionally arranged; according to the magnetic attraction type self-adapting wall surface moving robot, through hinging between the magnetic rolling wheels and the bottom plate, the hinged position of each magnetic rolling wheel and the bottom plate is equivalent to a joint of the robot; the magnetic rolling wheels can rotate relative to the bottom plate so as to adapt to wall surfaces at different conditions, and therefore, the wall surface moving robot has the function of climbing on the wall surfaces of different curvatures flexibly and freely and is high in adaptability.

The invention discloses an unsaturated ester containing an alcohol amine group, and a preparation method and an application thereof. The unsaturated ester containing the alcohol amine group is formedby esterification reaction of an alcohol amine compound and unsaturated anhydride. The preparation method is simple, the preparation process is easy to control, the yield is high, and industrialized production is convenient. The early strength of a cement-based material can be significantly improved by introducing the unsaturated ester containing the alcohol amine group into molecules of a polycarboxylic water reducer. Carboxylic groups and ester groups of unsaturated monomers can make the polycarboxylic water reducer have good dispersibility and dispersion retention property; the alcohol amine group can be complexed with metal ions in cement slurry and forms stable complexes with the metal ions, so the hydration of cement minerals can be promoted, ettringite is generated, the diffusion rate of hydration products is improved, the hydration accelerating period of cement is accelerated to enter, the setting time is shortened, and the early strength of the cement-based material is increased.

The invention relates to the technical field of processing of parts, in particular to an operating method for grinding the periphery of a thin-wall part. The method comprises the following steps: (1) installing an angle iron device on a working platform removing a magnetic sucker; (2) using the angle iron device to press the thin-wall part; (3) carrying out grinding processing on the thin-wall part; (4) taking down the thin-wall part from the angle iron device, and carrying out grinding processing on another surface; and (5) repeating the step (4) till the peripheral surfaces of the thin-wall part are respectively ground and processed. The angle iron device can guarantee peripheral grinding of the long and high thin-wall part, achieves the requirement of paper size, and reduces the processing deformation. The operating method can solve certain troublesome problems and can grind the peripheral edges of a plurality of thin-wall parts with high efficiency.

One or more embodiments of the present specification provide a customer service demand identification method and device. The method comprises the following steps of acquiring application usage information of a target user, with the application usage information comprising at least one of application operation behavior data, application operation interface screenshots, and application exception detection information; based on the application use information of the target user, intelligently identifying whether the target user has a customer service demand or not; when determining that the target user needs customer service, automatically pushing customer service to the target user. Therefore, the customer service entrance does not need to be arranged at a significant position; even if the customer service entrance is arranged at a relatively hidden position, the target user can still be ensured to quickly enter the customer service module, so that the target user is ensured to enjoy thecorresponding customer service in time, the troublesome problem encountered by the target user is solved in time through customer service intervention, and the user experience is improved.

The invention provides a face cartoon image design method, and the method comprises the steps: 1, obtaining a face image; 2, collecting a plurality of feature points of the image, constructing a feature vector of a human face through the feature points, and constructing a face attribute topological graph which represents the topological structure of all organs of the human face and has certain tolerance to the deformation of the human face, wherein each top point in the topological graph represents one feature vector which is used for recording the feature information of the feature points nearby the top point; 3, building a cartoon image database through combining the feature vectors of the human face, the face attribute topological graph and a curvature line of the contour line of the human face; 4, comparing the feature points with the database, and extracting a cartoon image; 5, carrying out the rendering and special effect processing of the cartoon image, and generating a face ofa cartoon figure model; 6, detecting the key information of the face of the cartoon figure model, and outputting the key information to a mobile terminal. The method achieves the visualization of theface cartoon, solves problems of rigid and inflexible lines of faces, and meets the entertainment demands of users.

The invention provides a traditional Chinese medicine bacterial fertilizer produced by utilizing traditional Chinese medicine waste residues. The traditional Chinese medicine bacterial fertilizer comprises the following raw materials in parts by weight: 60-80 parts of traditional Chinese medicine waste residues with water content of 70-80%; 20-40 parts of a wet auxiliary material with a water content of 50%-75%; 30-50 parts of a dry auxiliary material with a water content of 0.1%-20%; 5-10 parts of trace elements; 5-10 parts of a fermentation inoculant; 1-2 parts of beneficial viable bacteria; and 5-10 parts of potassium fulvate. The preparation method of the traditional Chinese medicine bacterial fertilizer comprises the following steps: determining a ratio, mixing materials, fermenting, crushing and refining, granulating and supplementing bacteria. The traditional Chinese medicine waste residues serve as fermentation main materials, the water content of the fermentation raw materials is controlled within a suitable range by adding the dry auxiliary materials and the wet auxiliary materials, the drying link is omitted in the middle, the fermentation time is greatly shortened, the energy consumption and the labor cost are saved, and meanwhile the preparation method is not limited by regions and weather and is wider in applicability.

The invention discloses a management method of self-certified public key of a mobile self-organized network on the basis of ECC, comprising the following steps: a shared key is distributed to n virtual central nodes by threshold cryptology; a user chooses a secret random number to calculate a public parameter, and identity and the public parameter are sent to a nearby virtual central node A1; A1 contacts with other virtual central nodes and sends the user information to the nodes; each publisher Ai chooses a random secret integer and calculates as well as broadcasts a self-certified public key subblock Qi to other publishers according to the secret integers and parameters published by the user; each publisher Ai calculates a self-certified public key Q, a sub-signature xi and an intermediate quantity Ri and sends (r, I, xi and Ri) to a synthesizer; the synthesizer calculates and synthesizes a signature x after all sub-signatures are qualified after authentication and sends Q and x to the user; the user calculates a secret key s according to the x; and the authenticity of the self-certified public key of the user is verified. The invention has no certificate management, no key escrow and no secure channel, so that the invention is suitable for the safe communication of the mobile self-organization network with limited resource.

The invention provides a preparation method of a chiral 1, 4-diphenyl-2-hydroxyl-1, 4-dibutanone compound. The method comprises the following steps: in the presence of a chiral metal compound, mixing silyl enol ether and phenylacetaldehyde monohydrate or substituted phenylacetaldehyde monohydrate in a solvent and performing action to obtain the chiral 1, 4-diphenyl-2-hydroxy-1, 4-dibutanone compound, wherein the reaction equation is as shown in the formula 1; R1 of silyl enol ether is of a phenyl or furan structure, a substituent R2 in substituted phenyl glyoxal monohydrate is selected from one or more of hydrogen atoms, halogen, methyl, methoxyl, nitryl and trifluoromethyl, and the substituent is at the ortho-position, meta-position or para-position of a benzene ring. The chiral metal compound can efficiently and highly enantioselectively catalyze the asymmetric Mukaiyama aldol reaction of the phenylacetaldehyde monohydrate compound, a new method for synthesizing the 1, 4-diphenyl-2-hydroxy-1, 4-dibutanone compound is provided, the problem that conditions are harsh in the original reaction is solved, and the chiral metal compound is more environmentally friendly.

The invention provides flexible edge processing equipment for a hook-and-loop fastener bandage of a medical stretcher and a process of the flexible edge processing equipment. The processing equipment comprises a support; the support comprises a first-layer bottom plate and a second-layer bottom plate; the first-layer bottom plate is sequentially provided with a hook-and-loop fastener bandage box, a set of coating mechanisms, a set of cloth strip boxes and a traction mechanism; the second-layer bottom plate is sequentially provided with a guiding mechanism, a folding mechanism, a pressing mechanism and a sueding mechanism; a bandage roll is mounted on the hook-and-loop fastener bandage box; a cloth roll is mounted on the cloth strip boxes; the set of cloth strip boxes are arranged on the two sides of the hook-and-loop fastener bandage; and the bandage is attached to cloth strips after passing through the coating mechanisms, and the two sides of the bandage are covered with the cloth strips through the traction mechanism, the guiding mechanism, the folding mechanism, the pressing mechanism and the sueding mechanism in sequence. According to the flexible edge processing equipment for the hook-and-loop fastener bandage of the medical stretcher and the process of the flexible edge processing equipment, a boxing mechanism, the coating mechanisms, the traction mechanism, the guiding mechanism, the folding mechanism, the pressing mechanism and the sueding mechanism are sequentially arranged on the double-layer supports, so that flexible edge processing treatment of the two side edges of the hook-and-loop fastener bandage is achieved, and the problem that the side edges of the hook-and-loop fastener bandage are hard and stab the hands is solved.

The invention discloses a construction method for treating flowing sand of a deep foundation pit slope. The essential significance of the construction method is to treat the stagnant water of the deepfoundation pit slope. Since releasable flowing can only occur to a geological sand layer with water under certain conditions inducement, the sand layer is naturally stopped if the water in the sand layer is discharged. The stagnant water in the geological sand layer is formed naturally, the conditions and reserves are both different, and the gushing potential of the flowing sand is different as well. According to the method, two measures are adopted according to the different gushing amounts, wherein the first measure is to use a reverse drainage water filtering channel and is suitable for the situation that the gushing of the flowing sand is small and slow; and the second measure is to use the reverse drainage water filtering channel and infiltrating wells, and is suitable for the case that the gushing of the flowing sand is large and the related section is long. The first measure of using the reverse drainage water filtering channel is characterized by comprising the steps of drilling a plurality of downwardly inclined water through holes in the edge of a trough at the trough slope where the flowing sand gushes, and intercepting the flowing sand water flowing into the foundationpit and draining the flowing sand into the sand layer of the next layer through filtering; and the second measure of using the reverse drainage water filtering channel and the infiltrating wells is characterized in that the water filtering channel is arranged at the trough slope and the plurality of infiltrating wells are additionally arranged at a place slightly away from the trough opening.

The invention relates to a die for punching of a side edge of a product with a U-shaped section, comprising a male die, a female die and a lower die plate, wherein a lower die is arranged at the upper end of the lower die plate, a sliding block is arranged at one side of the lower die, the female die is arranged at the upper end of the lower die, a through hole is vertically formed in one end of the female die, the other end of the female die stretches into the side wall of the sliding block to be fixed, the lower die plate is connected with the sliding block by a round-wire spiral spring, the sliding block and the lower die are connected with a fixed plate arranged above the female die by an unloading guide pillar, an unloading plate capable of sliding along the unloading guide pillar is arranged between the fixed plate and the female die, the male die is arranged in the fixed plate, the lower end of the male die slides in a movable slot of the unloading plate, an upper die plate is arranged at the upper end of the fixed plate, an unloading screw is in sliding connection in the upper die plate, and the lower end of the unloading screw penetrates through the fixed plate to be connected with the unloading plate. The die can improve the production efficiency and ensure the dimension precision and surface requirements of products.

The invention relates to the technical field of hydraulics, and especially relates to a pressure relief system for pilot oil of an oscillating cylinder hydraulic control valve. The pressure relief system comprises two oscillating oil cylinders, an oscillating cylinder hydraulic valve, two pumping oil cylinders and a pumping oil cylinder hydraulic valve; a first one-way valve is arranged between anoil outlet A1 of the pumping oil cylinder hydraulic valve and a pilot oil port a2 of the oscillating cylinder hydraulic valve; an inlet of the first one-way valve is connected to the pilot oil port a2 of the oscillating cylinder hydraulic valve and a signal port S1 of the pumping oil cylinder at the same time, and an outlet of the first one-way valve is connected to the oil outlet A1 of the pumping oil cylinder hydraulic valve; a second one-way valve is arranged between an oil outlet B1 of the pumping oil cylinder hydraulic valve and a pilot oil port b2 of the oscillating cylinder hydraulic valve; and an inlet of the second one-way valve is connected to the pilot oil port b2 of the oscillating cylinder hydraulic valve and a signal port S2 of the pumping oil cylinder at the same time, andan outlet of the second one-way valve is connected with the oil outlet B1 of the pumping oil cylinder hydraulic valve. The system provided by the invention is simple in structure, low in cost and capable of achieving the pressure relief problem of the pilot oil by utilizing the pressure difference, and achieves the purpose of rapidly placing an oscillating cylinder in place.