225results about How to "Solve unsolvable problems" patented technology

The invention discloses an application multidimensional privacy leak detection method and system for iOS platform; privacy leak detection is provided for iOS applications from the three dimensions, static analysis, dynamic analysis and data analysis, wherein the static analysis incudes the steps of application decrypting, app storage path locating, disassembling, and disassembly source code sensitive API (application program interface) analysis; the dynamic analysis includes the step of allowing Hook-sensitive API function to acquire a log record by running an application, and acquire a sensitive API calling sequence through log analysis; the data analysis incudes the steps of capturing application network data packets, and analyzing data packet protocol, address and content. The method and system of the invention can provide comprehensive detection for data privacy leaks of iOS applications to obtain complete privacy leak event data.

The invention relates to a singular value decomposition-based coordination control method of single gimbal control moment gyros (SGCMGs). The singular value decomposition-based coordination control method comprises the following steps of: distributing instruction moment required for controlling an entire spacecraft to two sets of SGCMGs according to a certain proportion; decomposing the instruction moment distributed to the set A of SGCMGs again by using a singular value decomposition method; distributing an instruction moment component in the singular direction of the set A of SGCMGs to the set B of SGCMGs; still distributing an instruction moment component perpendicular to the singular direction of the set A of SGCMGs to the set A of SGCMGs; after distribution, solving instruction gimbal angular velocities of the two sets of SGCMGs respectively; operating according to the respective instruction gimbal angular velocity; and acting the sum of output moment on the spacecraft to finish accurate attitude control. According to the singular value decomposition-based coordination control method, the gyros can still accurately and effectively output control moment to control the attitudeof the spacecraft while a part of gyros fails and the gyros are singular and the probability of premature saturation of a single set of SGCMGs is also avoided to the greatest extent without configuring an extra execution mechanism.

The invention relates to a preparation method for the microcrystal glass, which comprises: 1) preparing material; 2) fusing the glass; 3) forming with float-glass method; 4) crystallized treating with gradient temperature. This invention reduces cost, and has high yield without grinding process or pollution to environment.

The invention discloses a spare double parallel linear array and a two-dimensional DOA (Direction of Arrival) estimation method. The linear array comprises two SULAs with the difference between array element numbers to be one; the sub array with the larger array element number also comprises an auxiliary array element with the distance with the original point to be smaller than or equal to 0.5 lambda; the gap between the SULA array elements is lambda; and the gap between the sub arrays is 0.5 lambda. The corresponding DOA estimation method comprises steps: a linear transformation matrix is obtained based on an autocorrelation matrix for received data, and based on unit arrays with the same dimensions and the same signal number, a propagation matrix Pc is constructed; through carrying out vertical partitioning and corresponding matrix transformation on the Pc, the cosines of included angles between incident signals and the y axis are solved; based on a total array flow matrix corresponding to the two SULAs, two groups of cosines of included angles between incident signals and the x axis are solved; deblurring is carried out based on the received data of the auxiliary array element; and by using the cosines of the included angles between the incident signals and the x axis and the y axis, estimation values of an elevation angle and an azimuth angle are solved. The spare double parallel linear array and the two-dimensional DOA direction estimation method are used for wireless communication, the structure is simple, the cost is low, and the direction-finding precision is high.

The invention provides a recovery and utilization method of valuable metal sludge containing copper, nickel and cobalt, namely, a combined technology of bacterial leaching aid-centrifugal extraction-cyclone electrowinning. The method comprises the following steps: A. sequentially mixing and stirring extract slurry with a sulfuric acid solution, a bacteria assisted leaching agent and hydrogen peroxide, and filtering to obtain filtrate and filter residue; B. centrifugally extracting the filtrate to obtain a high-purity copper sulfate solution, and carrying out cyclone electrowinning on the solution to obtain metal copper; and C. centrifugally extracting a water phase with impurities being removed and copper being extracted to obtain a high-purity nickel sulfate solution, and carrying out cyclone electrowinning on the solution to obtain metal nickel. According to the recovery and utilization method provided by the invention, the bacterial leaching aid, centrifugal extraction and cyclone electrowinning technologies are integrally operated; compared with the conventional technology of acid leaching-extracting-electrowinning, the recovery and utilization method has the advantages that the leaching efficiency of the valuable metal sludge containing copper, nickel and the like is stably improved from generally lower than 90% to higher than 95%, the acid consumption is decreased by more than 3%, the energy consumption is decreased by more than 10%, the occupation space is decreased by more than 60%, and a new way is provided for clean, efficient and comprehensive utilization of the valuable metal sludge containing copper, nickel, etc.

The invention relates to an insulation method of copper bars, in particular to a hot-compress dip-coating insulation method of copper bar, solving the defect and insufficiency of the existing insulation method of copper bars. The hot-compress dip-coating insulation method comprises the following steps: 1. a copper bar is cleaned, and the electric interface of the copper bar is protected and bound up; 2. the copper bar is preheated at the temperature of 170 to 190 DEG C, and kept for 20 minutes at the temperature of 170 to 190 DEG C; 3. the preheated copper bar is put in an epoxy encapsulating material fluidized bed, the surface of the copper bar is treated with hot pack by epoxy encapsulating material, and then dusting powder on the surface of the copper bar is quickly twittered; 4. the electric interface of the copper bar, which is treated with hot pack, is protected and eliminated, and the end of the electric interface is trimmed; and 5. at the temperature of 140 to 150 DEG C, the copper bar is solidified for 30 minutes, and then the solidified copper bar is dried. The invention improves the insulativity, the chemical resistance, the weather fastness and the like of the copper bar, lightens labor intensity, saves cost, improves the service life of the copper bar, and solves the inextricable problems of the existing insulation lapping and heat shrinking of tubing.

The invention discloses a random detection method of the assembling quality of assembling segment rings of a shield tunnel. The random detection method comprises the steps that the assembling qualityof the N assembling segment ring of the shield tunnel is detected through the opposite positions of a 3D laser scanner and a plurality of target sets, obtaining of point cloud data, point cloud data fitting splicing, point cloud data processing, and assembling quality detection data calculation. The azimuth angles and length values of elliptical long shafts and short shafts of the segment rings which are just assembled to be formed can be measured under the conditions that the construction space of an operation area of a shield segment assembling machine is narrow and intervisibility is not achieved, the assembling quality control result of the assembling segment rings can be mastered in the first time after the assembling segment rings are assembled and before synchronous grouting, the assembling quality is controlled from a source, a constructor can detect the ovality of the assembling segment rings, circular seam slab end faulting, the circular seam width, longitudinal seam slabend faulting and the longitudinal seam width in a to-be-detected area without making direct contact with the assembling segment rings, the detection environment is safe, and detection data are accurate.

The invention discloses a part defect detection and positioning method based on deep learning and normal graphs. The method comprises the steps that 1, an original image is collected, and a material surface normal graph is obtained through calculation; 2, meshing is performed on the surface normal graph; 3, normal graphs obtained after division of parts with different defects and normal graphs obtained after division of normal parts are used to train a model; 4, an image of a to-be-detected part is collected, and a material surface normal graph is calculated; 5, meshing is performed on the normal graph of the to-be-detected part; 6, images obtained after division in the step 5 are used as input to perform defect detection according to the trained model obtained in the step 3; and 7, feedback and defect positioning are performed according to the detection result in the step 6 and the division result in the step 5.

The invention is applicable for the technical field of televisions, and provides a method and a television for acquiring user information. The method comprises the following steps of: receiving an application state message sent by an Android system; when the application state message is a starting application message, acquiring the user information data according to the identification of the application; and when the application state message is a stopping application message, stopping acquiring the user information data, and packing and sending the acquired user information data. According to the method, when a program which is operated in the background receives the stopping application message, a user is judged to leave the application, and the acquisition of the user information is stopped. Therefore, excess acquisition of the user information can be avoided.

The invention discloses a device for comprehensive treatment and utilization of livestock and poultry manure, wherein the device includes: (a) an energy recovery system: livestock and poultry feces are mixed, blended with water and then subjected to anaerobic fermentation to obtain marsh gas, energy is recovered, and at the same time, biogas residues and biogas slurry are produced; (b) a materialrecovery system: the biogas residues and the biogas slurry are subjected to oxidation modification to obtain a harmless and resource material; (c) a product refining system: the material (oxidized product) is subjected to solid-liquid separation, and a liquid part is concentrated to produce a water-soluble fertilizer containing humic acid, a foliar fertilizer containing humic acid, a compound microbial fertilizer and a macroelement or microelement water-soluble fertilizer, a solid is subjected to spray explosion and refining, and an organic fertilizer containing humic acid, a biological organic fertilizer and a compound fertilizer containing humic acid are obtained. The device provided by the invention can effectively recover energy and materials, and achieves optimal harmlessness and resource utilization; and at the same time, the discharge amount of three wastes is far lower than industrial requirement standards, and the purposes of energy saving and emission reduction are achieved.In addition to being applied in the livestock and poultry feces, the device can also be applied to similar organic waste treatment, wherein organic waste includes but not limited to domestic waste, agricultural straw, sludge and the like.

The present invention discloses a wavelength equation parameter particle swarm and extreme value optimization spectrograph wavelength correction method. The correction method employs a particle swarm optimization to determine mechanical position error wavelength correction equation parameters, employs extreme value optimization to determine and regulate parameters, and employs hardware regulation and software correction to realize spectrometer wavelength correction. Based on the mechanical position error wavelength equation, two optimization algorithms determine equation parameters, regulate length of the rod and correct a wavelength compensation value so as to perform effective correction of scanning wavelength errors of a raster sine scanning monochromator or a spectrometer. The wavelength equation parameter particle swarm and extreme value optimization spectrograph wavelength correction method solves the problems that the wavelength scanning error of a monochromator rester scanning mechanism is big and cannot satisfy the wavelength precision of a device caused by optical zero position errors and roller guidance errors, and solves the problem that the wavelength equation parameters cannot be solved. The method combines software and hardware, is easy to operate, does not need to perform calculation processing of spectrum data of an instrument every time, and is suitable for wavelength correction when monochromator or spectrometer products are checked and debugged.

The invention provides a data processing method and device based on graph data mining. A user picture is built based on a relevance relation among graph data mining nodes and a conduction weight, a graph data based mining method from part to whole is proposed, a corresponding weight is further given to a relation of a subgraph in the scheme, and the problem which cannot be solved by a traditional data mining method is solved; and uncertainty of the data is added into an existing graph data mining technology, so that the influence brought by an uncertainty factor in previous research is solved.

The embodiment of the invention discloses a method for a sample survey. The method includes the steps of selecting the range of samples and obtaining the service types of the samples and the sample number of the service types; according to the service types and the sample number, setting sampling survey cost and a sample distribution method, and estimating the total number of the samples and the sample quantity of the service types; selecting one service type, obtaining the sample quantity of the service type, and setting a sampling method to obtain the sample extraction quantity of the service; according to the sample distribution method and the sampling method, determining an overall calculation algorithm, and calculating an overall estimation mean value and an estimation variance of the sample quantity of the service according to the overall calculation algorithm, the sample quantity of the service and the sample extraction quantity of the service. The embodiment of the invention further discloses a system for the sample survey. According to the method and the system, the problems that in the prior art, the requirements for quality of professionals are high, and a sampling method is complex and low in efficiency, operated manually and not suitable for periodical sampling surveys are solved.

The invention relates to a furrow mulching hill-drop earthing combined operation machine for planting the melons. The operation machine comprises a stander, and also comprises a leveling plate, a film mulching device, a furrow internal-mulch soil delivery roller, a mulch-film edge-pressing film wheel, a hill-drop device and a hole earthing roller, which are symmetrically arranged on two sides of the stander; the leveling plate is fixed connected to the front end of the stander, the film muching device, the furrow internal-mulch soil delivery roller, the mulch-film edge-pressing film wheel, the hill-drop device and the hole earthing roller are sequentially arranged behind the leveling plate, and a furrow internal-mulch shaping wheel is arranged between the middle part of the stander and the furrow internal-mulch soil delivery roller. The furrow mulching hill-drop earthing combined operation machine is mainly matched with a small four-wheeled tractor with horse power of 18 to 24 and connected with the tractor in a three-point form; the operation machine is a farm machine which can complete the mulching, furrow internal-mulch shaping, furrow internal-mulch earthing, planting and hole earthing in one step. The furrow mulching hill-drop earthing combined operation machine is suitable for the field planting of the melons needing the furrow plantation, so that the problems that mulching, dibbling and earthing are completed by manpower for a long time can be solved, and the planting efficiency is 60 times of that of the manual operation.

The invention relates to the field of the electric power transmission engineering, and discloses a device for monitoring tilting, sinking and horizontal shifting of a double-antenna power transmission line tower. The device is capable of monitoring tilting, sinking and horizontal shifting of a power transmission line tower in an unfavorable geology region, and used for solving the technical problem that an existing power transmission line tower tilting detection device is incapable of really measuring the tilt angle of the tower and also fails in measuring sinking and horizontal shifting values of the tower. A system for monitoring tilting, sinking and horizontal shifting of the double-antenna power transmission line tower comprises a base station and a mobile station; the base station is used for receiving GNSS positioning information and also providing correction information for the mobile station; the mobile station comprises a double-antenna GNSS satellite receiving panel, and a data radio station and a management circuit which are connected with the GNSS satellite receiving panel, respectively; the management circuit of the base station is connected with a first GSM device; the signal input end of the GNSS satellite receiving panel of the base station is connected with a base station positioning antenna; the management circuit of the mobile station is connected with a second GSM device; the signal input end of the GNSS satellite receiving panel of the mobile station is connected with a mobile station positioning antenna and a mobile station direction-finding antenna, respectively, wherein the mobile station positioning antenna and the mobile station direction-finding antenna are mounted on the power transmission line tower.

The invention discloses a power distribution network second-order voltage sensitivity calculation method based on HELM. According to the invention, the method comprises the steps: employing HELM for calculating the power flow of a power distribution network, and then calculating the first-order nonlinear sensitivity of the voltage according to a sensitivity calculation method based on the HELM; calculating voltage second-order sensitivity according to the voltage first-order nonlinear sensitivity. The HELM method is utilized to consider nonlinear factors of sensitivity, interaction between nodes can be considered, and the problem of virtual high sensitivity is avoided. The method can be used for selecting reactive compensation points of the power distribution network; reactive power optimization and voltage control are carried out; according to the invention, problems such as access of new energy, voltage control and the like are solved, selection of reactive compensation points is more reasonable, the economical efficiency of a compensation scheme is better, the network loss is further reduced, a reasonable control coefficient can be provided for voltage control, the voltage leveland the power factor are improved, and the method has higher theoretical significance and application value for reactive optimization and voltage control of a power distribution network.

The invention discloses low-moisture high-purity fondaparinux sodium and a preparation method thereof. During a freezing process, by adjusting a heating rate, heat preservation time and vacuum degree in sublimation and secondary drying stages, the problems that the fondaparinux sodium is higher in moisture content, low in purity, and difficult to store, and the raw material of the fondaparinux sodium is easy to pollute by bacteria are solved. Meanwhile, an impurity in front of a main peak, which cannot be removed, is removed in a column chromatography stage, and the fondaparinux sodium obtained with the preparation method is low in impurity content and high in purity.

The invention discloses a ground object coverage rate calculation method based on a full convolutional network and a conditional random field. The ground object coverage rate calculation method comprises the following steps: constructing the full convolutional neural network; preparing training data, wherein pixel-by-pixel segmentation is conducted on the collected remote sensing images accordingto the category to be segmented; conducting data enhancement on the remote sensing images, and constructing a semantic segmentation data set; training the full convolutional neural network: inputtingthe obtained semantic segmentation data set into the constructed full convolutional neural network, performing continuous iterative training, and updating network parameters until a training result meets a preset convergence condition; performing remote sensing image segmentation: performing semantic segmentation on the to-be-segmented image by using the trained full convolutional neural network to obtain preliminary segmentation results of various ground objects; optimizing a segmentation result; computing surface feature coverage information. Professional software is not needed, and the problem which cannot be solved by a traditional segmentation algorithm can be well solved.

The invention discloses a dimension reduction method of the target reconstruction problem of continuous wave system 1-bite radar. The dimension reduction method the target reconstruction problem of the continuous wave system 1-bite radar comprises the following steps that, a single frame 1-bite data cube is subjected to three-dimensional fast Fourier transform (3D-FFT) through a receiving end, phase-coherent accumulation of target signals is completed in three domains of a slow time domain, a null domain and a fast time domain, and a three-dimensional frequency domain data cube is obtained; the three-dimensional frequency domain data cube is subjected to three-dimensional constant false-alarm pre-detection, target trace point information after being subjected to the pre-detection is obtained, and the target trace point information comprises serial numbers of slow time units, null domain units and fast time units where trace points located; and based on the serial numbers of the slow time units, the null domain units and the fast time units where the pre-detection trace points located, a dimension reduction measurement matrix is calculated, an original measurement matrix is replacedwith the dimension reduction measurement matrix, and a dimension reduction measurement model is obtained. According to the dimension reduction method the target reconstruction problem of the continuous wave system 1-bite radar, the dimensionality of a reconstruction model can be greatly reduced, and the problem that conventional nonlinear reconstruction algorithms cannot be solved due to too highdimensionality is solved.

The invention relates to an interlayer signal transmission structure of a microwave mixed printed circuit board. The interlayer signal transmission structure comprises a top-layer signal transmission line, a through hole for connecting a top layer with a bottom layer and a bottom-layer signal transmission line. The interlayer signal transmission structure is characterized in that two or more grounding holes are formed in any positions, except the position of a microstrip line, on the circumference of the through hole to form a coaxial structure, and the impedance of the coaxial structure is equal to the impedance of a system; the grounding holes penetrate through the top layer and the bottom layer. According to the technical scheme and the design idea, on the condition of ensuring signal transmission quality, the interlayer signal transmission structure greatly improves the integration level of the system, solves the problems which radio frequency engineers can not solve for so long, and has wide application prospect.