599results about How to "Improve sufficiency" patented technology

The invention discloses a method of fully detecting null pointer reference defects. The method comprises recognizing all addressable expressions of an application to be detected based on an abstract syntax tree; carrying out conservative interval arithmetic and pointer analysis on the application to be detected according to a control flow diagram, and generating a procedural summary according to results of the interval arithmetic and the pointer analysis; recognizing all pointer reference and referred pointers according to the procedural summary and the abstract syntax tree, and creating a null pointer reference defect state machine example on each referred pointer; and running the null pointer reference defect state machine examples based on the control flow diagram, carrying out state transition on each defect state machine example on each node of the control flow diagram according to the results of the interval arithmetic and the pointer analysis, and carrying out null pointer reference detection. By adopting the method of fully detecting the null pointer reference defects, the problem of failing to report the null pointer reference defects can be effectively solved, and zero omission and low misinformation of the null pointer reference defect detection are achieved.

The invention provides a silicon carbide crystal growth device and a silicon carbide crystal growth method. The growth device comprises a crucible assembly, a seed crystal fixator, a gas system and atemperature control system, the crucible assembly comprises a crucible body, a graphite partition plate and a crucible cover, the graphite partition plate is arranged on the upper portion of the crucible body and provided with a vent hole structure, and the crucible cover covers the crucible body to form a crucible internal containing cavity; the seed crystal fixer is arranged on the inner side ofthe crucible cover and is positioned above the graphite partition plate; the gas system comprises a gas inlet pipeline and a gas outlet pipeline; the air inlet pipeline is connected with an air inletformed in the crucible body, and the air inlet is located below the graphite partition plate; the exhaust pipeline is connected with an exhaust port formed in the crucible cover; and the temperaturecontrol system is used for controlling the crucible assembly to be heated. The graphite partition plate is used for rectifying gas-phase substances sublimated upwards, the production cost is reduced,and meanwhile the percent of pass and the quality of crystals are improved.

The invention provides a TIG (tungsten inert gas) welding method for auxiliary mechanical vibration droplet transfer and a TIG welding device for the same. The TIG welding device comprises a TIG power supply, a wire feeder, a guide tube, an auxiliary mechanical vibration device, a wire feeding nozzle and a welding wire, wherein the wire feeder is connected with the guide tube, the guide tube is connected with the wire feeding nozzle, and the auxiliary mechanical vibration device is fixed to a frame. A vibration rod is driven to vertically vibrate in a reciprocating manner by an internal body driving motor and a transmission device, and a buffer spring is sleeved between the vibration rod and a contact. The TIG welding method includes the steps: igniting an arc heating workpiece, forming a molten bath after arc is stable, and then starting the wire feeder to automatically feed in the welding wire; and starting the auxiliary mechanical vibration device, leading the vibration rod, the contact and the welding wire to mechanically vibrate, and performing welding under the action of auxiliary mechanical vibration. The TIG welding device is simple, convenient in operation and high in applicability, and compared with digital control equipment, the TIG welding device greatly reduces cost and is convenient for industrial popularization.

The invention discloses an automatic checking method for change influence degree of a model. The automatic checking method comprises the following steps: a), collecting and analyzing SQL (structured query language) sentences performed by a database, and recording correlation between tables in the database; b) generating a correlation base line of a system data model to obtain a constrained graph of a system physical model, generating a physical model digraph according to the system service flow, and constructing a data model-service functional diagraph; c) when the software system has model changes, inputting the corresponding change information, and distinguishing the change influence range and the service functions according to the digraph and the functional digraph. According to the automatic checking method for change influence degree of the model disclosed by the invention, the SQL information of the database is collected, the model digraph is generated, the software change influence degree is analyzed from the software system physical model, the change influence range and the service function pots of the model are intelligently judged, and the risk and design defects are distinguished in advance, so that the intuition, the sufficiency and the efficiency of the change influence degree analysis are improved.

The invention discloses an integration method of a high-reliability power hybrid integrated circuit. The method comprises the following steps of: (1) firstly, washing an original thick film substrate with ultra sound and drying; (2) forming a multilayer Cu-Ni-Cr-Au composite film at the back of a ceramic substrate in a high-vacuum magnetically-controlled sputtering platform in one step by using a high-vacuum sputtering method; (3) selectively sputtering another Cu-Ni-Cr-Au composite film again on the basis so that a multilayer metal film grooved mesh is formed in a selected region; (4) then, annealing at a high temperature to obtain a thick film substrate; and (5) assembling the thick film substrate on a shell base, assembling a semiconductor chip and other separate devices, bonding with silicon-aluminum wires to connect the circuit and seal a lid to obtain a made high-reliability power hybrid integrated circuit. The integrated circuit made by the method has favorable welding system compactness, adhesion, heat conductivity, rapid radiation and circuit reliability and is widely applied to the fields of aerospace, aviation, ships, precise instruments, geological exploration, oil exploration, communication, and the like.

The invention discloses a synchronous measurement device for perimeters and maximum center axis offset of cigars. The synchronous measurement device comprises a U-shaped support. Two opposite cigar clamping systems are arranged on the U-shaped support and connected with a power system. A measuring system is arranged on the bottom surface of the U-shaped support, and the power system and the measuring system are both connected with a control system. Meanwhile, the invention discloses a detection method utilizing the synchronous measurement device. With the synchronous measurement device and the detection method, detection accuracy and check efficiency can be effectively improved, nondestructive detection can be achieved, and cigar image can be greatly promoted.

The invention discloses a SQL coverage-based automatic testing method for an application software in a database. The automatic testing method comprises the following steps: establishing a grammatical rule table for database access; statically analyzing a source code depending on a self-defined grammatical rule with the adoption of a lexical analysis and grammatical analysis technology, and acquiring code information related to the database access; dynamically analyzing the source code by adopting an ASM technology, respectively traversing multiple categories in the source code, and acquiring information, related to the database access, in each category; integrating a static analysis result and a dynamic analysis result to generate a database access behavior characteristic model, and constructing a database access behavior characteristic database according to the database access behavior characteristic model; and capturing database access dynamic execution characteristics when the source code is executed, carrying out matching calculation on the database access dynamic execution characteristics and the database access behavior characteristic database, and acquiring test coverage data based on SQL. The automatic testing method is capable of improving the adequacy and the effectiveness of an SQL coverage test and does not influence the execution characteristic of tested software while the SQL coverage test is realized.

The invention discloses a nitrogen fixation and root strengthening ecological fertilizer of medical stone plants, and the weight percentages of components are: medical stones powders: 25 to 26 percent, volcanic rock powders: 10 to15 percent, bentonite: 20 to 25 percent; nidusvespae: 0.050 to 0.200 percent; iarovized seed: 0.050 to 0.200 percent; glycyrrhiza: 0.059 to 0.600 percent; alum: 0.005 to 0.02 percent; chinaberry seed: 0.05 to 0.200 percent; smoke spittle: 14.95 to 20 percent; radix stemonae: 0.059 to 0.60 percent and duckweed: 13 to 18 percent. The manufacturing method is that the medical stone ores and the volcanic rocks are used as raw materials to be rude grinded by a jaw grinder, medium silts are made by screening the grinded raw materials, the medium silts are fine grinded by a hammer type grinder, and the medical stone powders and the volcanic rock powders are made by screening with a 180 meshes sieve; the alum is grinded by the hammer type grinder and is screened to be 180 meshes alum powders; the bentonite is grinded by the hammer type grinder, and 180 meshes bentonite powders are made by screening; the smoke spittle, chinaberry seed, iarovized seed, radix stemonae grass, nidusvespae, glycyrrhiza and duckweed are taken respectively to be grinded by the hammer type grinder after being cut and sliced, and 180 meshes powders are made by screening respectively; the powder doses of various components are taken according to the weight percentages, mixed and stirred evenly.

The invention discloses a granular material drying equipment under low air pressure state, which comprises a suction pipe, a drying cylinder body and a blowing hole. Sleeve, shock-absorbing spring and T-shaped rod; both ends of the drying cylinder are welded with end sealing plates, and a closed drying chamber is formed between the drying cylinder and the end sealing plates, and the drying cylinder The top front end is welded with a material adding pipe; the heat preservation effect is good, the sealing effect is good, the spiral blade and the scraper blade stir the material in the drying cylinder to ensure the full mixing of the material in the drying cylinder, realize the circulation of hot air, and improve the heating of the material. The uniformity of the material, and in the low pressure environment in the drying cylinder, only a low heating temperature can make the water in the material reach the boiling point to evaporate and separate, which improves the efficiency of material drying, reduces the drying cost, and improves the quality of the material. Ease of drying.

The present invention discloses a multi-thread significance method based on a light field camera. The method comprises: 1, employing a Lytro light field camera to collect five-dimensional light field data in a scene and obtains light field full-focusing images, depth images, a focus stack image sequence and a multi-view image sequence; 2, performing super-pixel segmentation of the full-focusing images, and extracting the color, the position and the depth difference characteristics between the pixel pairs on different light field images; 3, respectively extracting the average optical flow characteristics of an adjacent focal plane image and an adjacent visual angle image, and calculating the focus flow difference characteristics and the visual angle flow difference characteristics; 4, performing weighting and summation of the color, the depth, the focus flow and the visual angle flow difference characteristics, and taking the position difference characteristic as a weight, and obtaining the original substantial results of multiple clues; and 5, optimizing the original substantial results, and obtaining the multiple-clue significance of the light field camera. The multi-thread significance method based on a light field camera is able to solve the defect that the current two-dimensional and three-dimensional significance extraction method cannot obtain and use the vision multiple clues so as to effectively improve the extraction precision of the image significance in the complex changeable scene.

The invention discloses a non-intrusion type embedded software abnormity processing verification method based on a simulation environment. The method comprises the following steps of building an embedded software simulation operation environment; designing an abnormity processing verification test case; executing the abnormity processing test case; collecting embedded software abnormity information; performing analysis and verification on the collected embedded software abnormity information.

The invention discloses a method and device for grouping data service bulk call simulation test. The characteristic is that, according the test configuration parameters of background control, it can establish ppp connect through grouping data service node and data resources modules which comprise general protocol stack and simulation terminal, bearing ICMP TCP datagram on ppp link. Using sending/response and flow made by data resources modules, the capability of managing grouping data service on base station system is validated through analyzing the related data. The present invention can be applied on different flat roof and system, and it can test fully the fundamental channel and add channel. At the same time, it can simulate grouping data service of base station system.

A green plant foliage fertilizer contains 39-41by weight of zeolite, 25-26. 5by weight of medical stone powder, 16-18by weight of altamud, 3-3. 3by weight of chinese herbal medicine, 0. 5-0. 5by weight ofalaum, 0. 5-0. 1by weight of nitrogen fertiliser slow-release agent, 0. 5-1by weight of phosphate regulating agent, 7-7. 5by weight of ferrous sulphate, and 4-4. 2by weight of zinc sulphate. The preparing method comprises: taking zeolite and medical stone ore as raw materials, crushing it with a jaw crusher, riddling with a medium screen to produce a medium powder, crushing it with a beater grinder, and riddling with a fine screen of 160 meshes to obtain zeolite powder and medical stone powder; taking alaum powder of 160 meshes to stand by service, crushing the raw materials that is quisqualis fruit, liquorice, stemona root radix stemonae, nidus vespae, fructus azedarach, flavescent sophora root, ducksmeat, plantago asiatica linne, soldiers wind, radix bupleuri, etc. with the beater grinder after cutting sheet, making it to be a medicine powder with a fine screen of 160 meshes; crushing the altamud powder with 160 meshes by the beater grinder; and by weight percentage, taking zeolite powder, medical stone powder, altamud powder, chinese herbal medicine powder, ofalaum, nitrogen fertiliser slow-release agent, phosphate regulating agent, ferrous sulphate and zinc sulphate in to a stirring mill, mixing for 15-20 minutes to be uniform to obtain the product.

The invention discloses a grain tedding device and a use method thereof. The grain tedding device comprises a base; four groups of jack bodies are symmetrically mounted on corners of the bottom of the base; a protecting plate is welded on the outer side of the top of the base; four groups of telescopic rods are symmetrically inlaid on corners of the top of the protecting plate; the tops of the telescopic rods are fixedly connected with a transparent glass plate through suction cups; sliding grooves are formed in two sides of the top of the protecting plate; sliding blocks are glidingly connected in the sliding grooves; a pushing plate is fixedly mounted between the sliding blocks through a connecting rod; a forward-and-reverse-rotation motor is fixedly mounted in the middle of the back end of the bottom of the base; screw rods are fixedly mounted in the sliding grooves through rolling bearings; and one end of each screw rod penetrates through the corresponding sliding block and the protecting plate to be in transmission connection with the forward-and-reverse-rotation motor through a belt pulley. The grain tedding device is simple and reasonable in structural design, convenient to operate, capable of saving time and effort, convenient to move, diversified in function, good in tedding effect, safe, stable, wide in application range and beneficial to promotion and popularization.

The invention discloses a multifunctional biomass hot water boiler. The multifunctional biomass hot water boiler comprises a boiler body. A support is arranged at the bottom end of the boiler body. A boiler ash chamber is arranged at the upper end of the support. A combustion chamber is arranged on the left side of the top end of the boiler ash chamber. A hot water chamber is arranged in the middle of the top end of the combustion chamber. The upper end of the left side of the combustion chamber is connected with a purification chamber through a smoke exhaust pipe. An air inlet chamber is arranged on the right side of the top end of the boiler ash chamber. A crushing chamber is arranged at the top end of the air inlet chamber. According to the multifunctional biomass hot water boiler, a crushing wheel is arranged in the crushing chamber and can completely crush fuel, and the combustion efficiency and the combustion sufficiency are improved; boiler ash can be filtered, the full utilization rate of boiler slag is increased, and the boiler slag which is not combusted fully is prevented from being wasted; waste gas generated by combustion can be effectively purified, and the situation that the waste gas is exhausted directly and consequently pollutes the environment is avoided; and the multifunctional biomass hot water boiler has the advantages of being efficient, capable of saving energy and environmentally friendly, biomass fuel is adopted for combustion, the using cost is low, and the practicability is high.

The embodiment of the invention provides a user label determination method and device based on artificial intelligence, and a storage medium, relates to the technical field of artificial intelligence,and relates to a deep learning technology, and the method comprises the steps: obtaining user data, corresponding to a target user, in at least one feature domain; determining intra-domain features corresponding to the feature domains according to the user data contained in the feature domains and a plurality of attribute vectors used for representing attribute directions; fusing the intra-domainfeatures to obtain inter-domain features corresponding to the target user, and determining target features according to the inter-domain features; and performing identification processing on the target feature to generate a user label of the target user. According to the embodiment of the invention, through the attribute vectors, information loss in the feature extraction process is avoided, andthe accuracy of label determination is improved.

An efficient energy-saving pyrolysis tank device for soil restoration is disclosed. The device includes a superconducting magnetic annular water jacket, a soil pyrolysis restoration tank body, a preheating water jacket, a high-frequency coil, a ceramic inner cylinder and a spiral blade. The ceramic inner cylinder is mounted inside the soil pyrolysis restoration tank body. The inside of the ceramicinner cylinder is a pyrolysis restoration cavity. A rotating shaft is mounted in the middle of the pyrolysis restoration cavity. The rotating shaft in the pyrolysis restoration cavity is welded to the spiral blade. The surface of the spiral blade is provided with a plurality of liquid spraying holes. The liquid spraying holes are communicated with a flow guide passage in the rotating shaft. The external wall of the ceramic inner cylinder is wound with the high-frequency coil. The superconducting magnetic annular water jacket is disposed outside the high-frequency coil. The inside of the superconducting magnetic annular water jacket is a hot-water cavity. Energy-saving effects of the device are good. The soil restoration cost is reduced. Agent spraying uniformity and sufficiency during soil restoration are improved. Heating and restoration effects on soil in the pyrolysis restoration cavity are improved, and the heating efficiency is high. The superconducting magnetic annular water jacket completely shields electromagnetic drifts.

The invention discloses a multi-element gas co-infiltration strengthening system and a process thereof, and belongs to the technical field of workpiece heat treatment. According to the multi-element gas co-infiltration strengthening system and the process thereof, the problems of poor environmental protection, poor infiltration effect and single infiltration layer of traditional heat treatment aresolved. The multi-element gas co-infiltration strengthening system comprises a feeding unit, an air exchange unit, a heating pre-infiltration unit, a multi-element gas co-infiltration strengthening unit, a cooling protection unit and a discharge unit connected in sequence. By means of the multi-element gas co-infiltration strengthening system and a process thereof the, through the cooperation ofeach unit, a traditional acid anticorrosion process is replaced, so that the environmental protection is improved; through the air exchange unit, the air participation is avoided, so that the sufficiency of polyatomic infiltration is improved; through the combination of the heating pre-infiltration unit and microwave radiation, the structure of the surface of a lamp post is changed, so that the infiltration speed and depth of subsequent nitrogen, sulfur and chromium elements are improved; and in the strengthening treatment of multi-element gas co-infiltration, firstly, ammonia atmosphere nitriding treatment is adopted, and then gaseous carbon sulfur chromium complex is released by an accelerating infiltration ball B, so that the carburizing, sulphurizing and chromizing co-infiltration treatment is achieved, the structure of the infiltration layer is complex and diversified, and the hardness of the lamp post is improved.