41results about How to "Avoid overdependence" patented technology

The invention provides a method for realizing accurate train positioning by a GPS with the aid of a digital railway map. The train positioning method essentially comprises two subalgorithms, namely a GPS integrity monitoring algorithm and a train positioning calculating algorithm. The GPS integrity monitoring algorithm uses the establishment of a local coordinate system based on railways and transforms a WGS-84 coordinate to a new local coordinate system based on railways as well as uses geographic information provided by the digital railway map to establish a redundancy equation and a constraint condition so as to monitor the pseudo-range observed quantity of the GPS; the train positioning calculating algorithm is responsible for establishing a train position calculating model and a speed calculating model and integrating the two models to realize a train positioning calculating function. The train positioning method, provided by the invention, can not only effectively improve the precision and the stability of the train positioning when the GPS is complete, but also provide a train positioning result with comparatively high precision when the GPS is not complete.

The invention relates to a well-constrained pre-stack elastic parameter inversing method for modulating supplemented subspace, belonging to the field of seismic log. The method provided by the invention has the advantages that: the computation time is shortened so that the running time is shortened and the cost is reduced; the processing parameters can be adjusted so that a better processing result can be obtained; the frequency-increasing data wave group detailed information is not abundant so that the wave group characteristics of original seismic events and the interlaminar information of original profiles are maintained and the resolution of the profiles is enhanced; the undue dependence on a stratified model is avoided to ensure that the information of combined reconstruction beside the well is preferably fitted with the log information, and the non-stratified information contained in seismic data can be fully reflected outside the well; therefore, the problem of matching the seismic data of reservoir stratums (stratums such as fluvial facies reservoir stratum, carbonatite pore and fissure and hole intensive belt and the like ) with reticular characteristics with the well information is solved.

The invention provides a recombinant lentiviral expression vector, and belongs to the technical field of cell engineering. The recombinant lentiviral expression vector comprises a 21mb gene, a 41BBL gene and an MICA gene which are sequentially connected in series; and the 21mb gene is obtained by sequentially connecting a signal peptide gene, an IL21 gene, a CD8 Hinge gene and a CD8 transmembranegene in series. After the provided recombinant lentiviral expression vector transfects a host cell, the host cell expresses the MICA and the 41BBL, and the IL21 is fused and expressed (but not secreted in a culture environment) on a cytomembrane of the host cell. After the provided recombinant lentiviral expression vector transfects the host cell, an obtained reconstitution cell promotes the highexpression of the NKG2D, avoids excessive activation of an NK cell and prolongs the proliferation time of the NK cell in the process of induction culture of the NK cell.

The invention discloses a detection method of a tunnel lining crack based on a mobile type three-dimensional laser scanning technique. The detection method comprises the following steps of determiningthe length and the route change trend of the measuring route, and arranging a plurality of control points on a tunnel wall along the measuring route; when a scanning vehicle is moved, performing static self-calibrating collection on the cross section of a tunnel by a three-dimensional laser scanner, so as to obtain the data of the point cloud of the cross section of the tunnel; pre-treating the data of the point cloud of the cross section of the tunnel; when the scanning vehicle is moved, obtaining the coordinates of each control point through a total station, and controlling under the same coordinate system; projecting the pretreated data of the point cloud of the cross section of the tunnel onto the standard cross section of the tunnel to form an orthographic gray scale plan; accordingto the orthographic gray scale plan and the coordinates of each control point, measuring the data of crack at the tunnel lining surface, marking, calculating, and outputting. The detection method hasthe advantages that a large amount of point clouds at the tunnel lining surface can be obtained, and be treated and analyzed, so as to obtain the information of the crack at the tunnel lining surface;the tunnel lining crack can be more quickly and accurately detected.

The invention relates to a method for generating a practical multidisciplinary design optimization model automatically, which comprises the following steps of: first, establishing an integrated product optimization model according to design requirements; second, filling in a 'correlation' matrix D according to the inclusion relation between functions and optimization variables in the integrated product optimization model; third, filling in a 'coupling' matrix C according to the inclusion relation among functions in the integrated product optimization model; fourth, filling in a 'time' matrix T according to time taken for calculating functions in the integrated product optimization model; fifth, carrying out automatic task division by a genetic algorithm according to the matrixes to obtain one main task and a plurality of subtasks; sixth, generating an MDO (Multidisciplinary Design Optimization) model according to the task division scheme. The method supports the computer based automatic generation of the MDO model, avoids the excessive independence on experience of designers, can obtain the most reasonable MDO model, and has the characteristics of good simplicity and practicality, wide application and the like.

The invention provides a series dividing and cooling framework of common users of a nuclear power plant equipment cooling water system. The series dividing and cooling framework comprises two cooling series and the multiple common users to be cooled, wherein the cooling series are isolated from each other and independent of each other, and the common users comprise at least one redundant cooling user and at least one cross cooling user; the redundant cooling user is provided with two sets of heat-exchange devices cooled through the different cooling series, a heat-exchange device of the cross cooling user is selectively cooled by the first cooling series or the second cooling series. Compared with the prior art, the two cooling series which are isolated from each other and independent of each other are used for cooling the common users in different modes, not only is overdependence on an RRI system common loop avoided, but also common user isolating valves between series are omitted, and the failure probability of an RRI system is greatly reduced; meanwhile, it is ensured that when one single cooling series fails, the redundant cooling user and the cross cooling uses can be cooled continuously and sufficiently.

The invention discloses a cooperative transmission method combined with higher-order domain network coding. The method is characterized in that at the first stage of transmission, each user transmits self information and simultaneously monitors information transmitted by other users; and at the second stage of transmission, each user utilizes coding vectors to carry out linear superimpose coding on packets monitored at the first stage and the self information on a high-order domain and then transmit the coded packets and information, and a receiving end utilizes a coded matrix to form packetscorrectly received to a linear simultaneous equation on the high-order domain so as to solve original data sent by the users. In the method disclosed by the invention, the cooperative transmission technology in a multi-user cooperative transmission system is combined with the higher-order domain network coding technology, thereby providing highly reliable insurance for uplink data transmission ofmulti users and effectively improving the cooperative transmission efficiency and the overall system performance.

The invention discloses a credit-based method and equipment for opening bin doors of self-service vending equipment, and belongs to the technical field of intelligent equipment. The method comprises the steps that a door opening credit limit of a user is obtained, the door opening credit limit is compared with a preset threshold of each bin door, and the ID information of the bin door allowing tobe opened by the user is obtained on the basis of the comparison result, wherein the self-service vending equipment comprises at least one bin door, and each bin door has unique ID information; a dooropening request of the user is obtained, wherein the door opening request comprises the ID information of the bin door which is requested to be opened; whether the ID information of the bin door requested to be opened by the user is in the ID information of the bin door allowing to be opened by the user is judged on the basis of the door opening request, and if yes, the bin door requested to be opened by the user is controlled to be opened. According to the method, the technical scheme of associating the credit limit of the user with the bin doors of equipment is implemented, so that the purposes of restraining user behaviors, improving quality of consumers and reducing merchant losses are achieved.

The invention discloses a speech enhancement method based on non-local mean filtering. The problem of high generation rate of musical noise after speech enhancement in the prior art is mainly solved. The method is implemented by the following steps of (1) inputting speech with noise, and calculating a signal power spectrum of the speech with noise; (2) performing modified spectral subtraction preprocessing on the power spectrum of the speech with noise to obtain an estimated power spectrum of the speech with noise; (3) obtaining an estimated frequency spectrum according to the estimated power spectrum, and performing short-time inverse Fourier transform on the estimated frequency spectrum to obtain preprocessed speech; (4) performing non-local mean filtering on the preprocessed speech, and calculating a corrected value of the speech; and (5) replacing the original speech with noise by using the calculated corrected value. According to the method, similar points in a neighborhood of a point to be enhanced are subjected to weighted averaging based on a non-local principle, so that background noise can be suppressed, the clarity of the speech is maintained, and the quality of the speech is effectively improved; the method can be used for mobile communication.

According to an MR structure information constrained non-local mean value guided PET image partial volume correction method, an NLM search range is constrained through the structure information of MR,excessive dependence of the generated PET image on the MR image can be avoided while the MR structure information is utilized, and the quality of the PET image is improved. According to the invention, MR structure information is used to carry out PET image partial volume correction; the method is advantaged in that partial volume correction precision and efficiency of the PET image are improved,the MR structure area is utilized to constrain the NLM search window, excessive dependence of the PET correction result image on the MR image is reduced, and accuracy of the PET correction image is improved.

The embodiment of the invention provides a personal credit scoring method and system, electronic equipment and a storage medium. According to the personal credit scoring method provided by the embodiment of the invention, the plurality of sub-evaluation models are established from a plurality of dimensions, so that personal credit can be evaluated more comprehensively, excessive dependence on a certain credit record is avoided, the accuracy of the personal credit scoring method is improved, and in addition, the plurality of sub-evaluation models are established, personal credit evaluation canbe comprehensively adjusted in combination with multiple service scenes, and the flexibility of the personal credit scoring method is improved.

The invention provides a method for realizing accurate train positioning by a GPS with the aid of a digital railway map. The train positioning method essentially comprises two subalgorithms, namely a GPS integrity monitoring algorithm and a train positioning calculating algorithm. The GPS integrity monitoring algorithm uses the establishment of a local coordinate system based on railways and transforms a WGS-84 coordinate to a new local coordinate system based on railways as well as uses geographic information provided by the digital railway map to establish a redundancy equation and a constraint condition so as to monitor the pseudo-range observed quantity of the GPS; the train positioning calculating algorithm is responsible for establishing a train position calculating model and a speed calculating model and integrating the two models to realize a train positioning calculating function. The train positioning method, provided by the invention, can not only effectively improve the precision and the stability of the train positioning when the GPS is complete, but also provide a train positioning result with comparatively high precision when the GPS is not complete.

The invention discloses a centrifugal pump fault diagnosis method based on a self-search characteristic peak value and a local range. The centrifugal pump fault diagnosis method comprises the following steps: firstly obtaining a vibration signal and a three-phase current signal of a centrifugal pump; automatically searching the rotating frequency of the centrifugal pump within the rated rotating frequency according to the peak value of the power spectrum; then constructing a self-search frequency conversion peak value index by using the vibration signal after low-pass filtering, constructing a self-search characteristic frequency peak value index by using the vibration signal after band-pass filtering and db10 wavelet decomposition, and constructing a current local range index by using the current signal; respectively setting corresponding threshold values, and outputting a diagnosis result by comparing the extracted indexes with the set threshold values, so as to realize automatic diagnosis of the fault of the centrifugal pump. According to the characteristics of the vibration signal and the current signal of the centrifugal pump, indexes are constructed respectively, the defects that a traditional method needs manual judgment, excessively depends on experts and priori knowledge, wastes time and labor and is prone to state misjudgment are overcome, automatic fault diagnosis of the centrifugal pump can be achieved, and the efficiency and accuracy of fault diagnosis of the centrifugal pump are improved.

The invention belongs to a preparation method of starch-based biological latex. The starch-based biological latex comprises the following components: 35-55% of absolutely dry starch, 0.1-10wt% of a plasticizer, 0.1-8wt% of a lubricant and 0.01-35wt% of a starch modifier. Starch emulsion is prepared from a buffer solution prepared from citric acid-disodium hydrogen phosphate. The preparation methodcomprises the following steps: 1) carrying out mechanical pretreatment on raw starch, wherein the pretreatment method comprises the steps of mechanically grinding dry powder by a ball mill for 0.5-12h; 2) preparing a ball-milled raw starch sample into a suspension liquid with the mass concentration of 40-55% by using a buffer solution, placing the suspension liquid in a water bath kettle at thetemperature of 30-55 DEG C, adding the starch modifier, and after heating to the temperature of 80-95 DEG C, insulating for 30-45 minutes; 3) cooling the emulsion in the step 2 to room temperature, adding a catalyst, and adding an oxidant to oxidize for 30-120 min at the temperature of 25-50 DEG C; 4) adding the starch modifier, adjusting pH of the emulsion to be 7-10, and adding a cross-linking agent to react for 20-90 min at the temperature of 50-70 DEG C; and 5) cooling and sieving to obtain the starch-based biological latex prepared by a ball-milling mechanical pretreatment composite biochemical modification method. The preparation method of the biological latex provided by the invention is relatively simple and easy to operate, and the product has the characteristics of moderate viscosity, strong adhesive force and high solid content, and can partially or completely replace petroleum-based latex in the papermaking industry.

The invention discloses an acne-removing, anti-wrinkle and whitening mask rich in marine extracts. The whitening mask is prepared from the following components: an acne-removing component, an anti-wrinkle component and a whitening component, 0.4-0.8% of seaweed extract, 0.2-0.6% of plant extract, 0.2-0.6% of deep sea collagen peptide, 0.5-1.0% of pearl hydrolysate, 5.0-10.0% of glycerinum, 0.1-0.3% of essence, 2.0-3.0% of butanediol, 0.2-0.3% of sodium hyaluronate, 0.1-0.2% of borneol powder, 1.2-2.3% of stearic acid, 0.1-0.15% of xanthan gum, 0.1-0.3% of allantoin, 0.05-0.15% ofnipagin, and the balance magnetized water. According to the invention, various deep sea extracts are added into the essence of the whitening mask, so that the essence can achieve the effects of removing acnes and resisting wrinkles without using hormones and antibiotics; by virtue of the attributes of the various deep sea extracts, under the dual cooperation of an autoimmune system and the essence, the acne removing and wrinkle resisting effects of the mask are ensured, so that facial surface cells are conditioned and repaired, and excessive dependence of a user on the facial mask is avoided; meanwhile, theuse experience of the user is improved, and the use effect of the facial mask is improved.

The invention discloses a Chinese chestnut bract-peeling machine, which comprises a seat body, a bract-peeling mechanism and a vibrating screen mechanism, wherein the seat body is formed with a feeding passage and a mounting cavity which are arranged in the upper and lower direction; the bract-peeling mechanism is disposed on the seat body and is used for the Chinese chestnut in the feeding passage to remove the chestnut bract; and the vibrating screen mechanism is disposed in the mounting cavity and is used for separating the Chinese chestnut and the chestnut bract. In the present invention,the bract-peeling mechanism and the vibrating screen mechanism are arranged in the up and down direction, and the Chinese chestnut firstly passes through the feeding passage and is used for peeling the chestnut bract in the bract-peeling mechanism; the Chinese chestnut and the chestnut bract are all entered into the mounting cavity, and the Chinese chestnut and the chestnut bract are separated under the action of the vibrating screen mechanism, and the Chinese chestnut and the chestnut bract finally collected separately. The Chinese chestnut bract-peeling machine effectively overcomes excessive reliance on manual operations and helps to improve processing efficiency.

The invention provides a multistage security routing method for a delay tolerant network and based on network codes. Coding data packet distribution is optimized, multistage routing based on the damaged probability of probability meeting nodes is designed according to the maximum transmission performance requirement between the nodes, the information damaging probability is reduced, the whole network throughput is improved, and the mixed security network coding scheme in a DTN is achieved in designing network cords to jointly boycott various kinds of attack of eavesdropping attack, Sybil attack, byzantine attack and discarding attack. To selective data discarding attack, limited redundant factors are dynamically added into source nodes timely to improve the fault-tolerant capability of link failure. Relay nodes are verified mutually to boycott the Sybil attach and byzantine attach and reduce the cost for verifying the source codes in existing schemes. A double-boycotting strategy is designed to reduce the effects of byzantine attack to the nodes.

The invention discloses a tunnel lining crack detection method based on mobile three-dimensional laser scanning technology, which includes: determining the length of the measurement route and the change trend of the route, and arranging several control points on the tunnel wall surface of the measurement route; When the vehicle is moving, the tunnel section is statically checked and collected by the 3D laser scanner to obtain the point cloud data of the tunnel section; the point cloud data of the tunnel section is preprocessed; when the scanning vehicle is moving, the control points are obtained by measuring with the total station Coordinates, and control in the same coordinate system; project the preprocessed tunnel section point cloud data onto a tunnel standard section to form an orthographic gray plan; measure the tunnel according to the ortho gray plan and the coordinates of each control point Lining surface crack data, and output after labeling and statistics. The invention can acquire a large amount of point clouds on the surface of the tunnel lining, and process and analyze the crack information on the surface of the tunnel lining to obtain faster and more accurate detection of the cracks on the tunnel lining.

The invention discloses a bidirectional gas valve kit for a sealed cabin of an underwater robot and gas a nozzle matched therewith. The bidirectional gas valve kit comprises a ventilating bolt A, a ventilating bolt B, a plug and a nut. The ventilating bolt A is mounted on a cover of the sealed cabin through the nut, the lower end of the ventilating bolt A is located outside the cover of the sealedcabin and the lower end of the ventilating bolt A is located in the cover of the sealed cabin, and the lower end of the ventilating bolt A is connected to the ventilating bolt B through a thread; andthe plug is mounted at the upper end of the ventilating bolt A. The bidirectional gas valve kit can restore quickly by means of deformation of a spring at the moment of being taken away after suckingand pressurizing the sealed cabin. A valve element of the ventilating bolt B is ejected to an upper cover by the spring to isolate the cabin and outside, so that air backflow during suction or pressurizing due to pressure difference between the indie and outside of the cabin is avoided, and therefore, it is closer to an ideal condition of sucking and pressurizing the sealed cabin. The bidirectional gas valve kit sucks and pressurizes the sealed cabin at one step, so that the maintenance and preparation work efficiency of the underwater robot is improved.

The centrifugal pump fault diagnosis method based on self-searching characteristic peak value and local extreme difference, first obtains the vibration signal and three-phase current signal of the centrifugal pump; secondly searches the centrifugal pump rotational frequency automatically according to the power spectrum peak within the rated rotational frequency; then uses the low-pass The filtered vibration signal is used to construct the self-searching frequency peak index, the vibration signal after band-pass filtering and db10 wavelet decomposition is used to construct the self-searching characteristic frequency peak index, and the current signal is used to construct the current local range index; respectively set the corresponding threshold, And output the diagnostic result by comparing the extracted index with the set threshold value, so as to realize the automatic diagnosis of the centrifugal pump fault; the present invention aims at the characteristics of the vibration signal and current signal of the centrifugal pump, respectively constructs the index, overcomes the traditional method that requires manual judgment and is too Relying on experts and prior knowledge, time-consuming and labor-intensive and prone to state misjudgment defects, it can realize automatic fault diagnosis of centrifugal pumps, which improves the efficiency and accuracy of centrifugal pump fault diagnosis.

The invention discloses a videoconference terminal processing method and a videoconference terminal. The method comprises reading first data from an external storage device by utilizing driving, and performing corresponding processing according to the read first data. With the technical scheme provided by the invention, the problem that a conventional videoconference terminal relies too much on network communication can be solved.

The invention relates to a well-constrained pre-stack elastic parameter inversing method for modulating supplemented subspace, belonging to the field of seismic log. The method provided by the invention has the advantages that: the computation time is shortened so that the running time is shortened and the cost is reduced; the processing parameters can be adjusted so that a better processing result can be obtained; the frequency-increasing data wave group detailed information is not abundant so that the wave group characteristics of original seismic events and the interlaminar information of original profiles are maintained and the resolution of the profiles is enhanced; the undue dependence on a stratified model is avoided to ensure that the information of combined reconstruction beside the well is preferably fitted with the log information, and the non-stratified information contained in seismic data can be fully reflected outside the well; therefore, the problem of matching the seismic data of reservoir stratums (stratums such as fluvial facies reservoir stratum, carbonatite pore and fissure and hole intensive belt and the like ) with reticular characteristics with the well information is solved.

The invention relates to a control method of a PCR analyzer. The control method comprises the following steps: acquiring project information of a current PCR analysis project; acquiring state information of each reagent slot position of a PCR analyzer, and distributing an idle reagent slot position for a current PCR analysis item according to the state information; sending cover opening instruction information for opening the distributed reagent slot position; judging whether the user puts a reagent cup in the distributed reagent slot position or not, and if so, sending cover closing instruction information for closing the distributed reagent slot position; extracting amplification program parameters and setting an amplification program according to the project information, and running the amplification program to perform PCR amplification; and extracting amplification result analysis parameters according to the project information, setting a result analysis program, and operating the result analysis program to carry out PCR result analysis. According to the invention, intelligent promotion of the PCR analysis process can be realized, distribution of reagent slots, amplification program setting and amplification result analysis are automatically realized, complicated manual setting operation and mistakes and omissions are avoided, and the analysis efficiency is improved.

The invention relates to a tracheal catheter with a controllable top end. The tracheal catheter comprises a catheter body, wherein the front side wall of the catheter body is provided with a ventilation catheter body, the front opening of the ventilation catheter body is communicated with the inner wall of the front end of an air bag, the front side wall of the catheter body is provided with a cavity, the ventilation catheter body penetrates through the cavity, a flexible part is arranged on the position, in the middle of air bag, of the catheter body, and the front end of the ventilation catheter body is fixed on the catheter body wall in the direction of the top end of the flexible part of the catheter body. A handle is arranged on the position, close to the joint end of a breathing loop, of the catheter body, the handle is provided with a ventilation catheter body fixing device, and the rear inner side of the handle and the outer side of one side corresponding to the catheter body are provided with clamping teeth matched with each other. The flexible part is arranged in the position, on the air bag, of the catheter body, and connected with the ventilation catheter body, the ventilation catheter body is drawn to achieve controllability of the bending degree of the top end of the catheter body, the ventilation catheter body fixing device on the handle is used for fixing the bending position, and the intubation success rate can be increased. A paramagnetic device arranged between the opening on the inclined surface and the opening on one side of the catheter body facilitates automatic glottis identification of the top end of the catheter body, and excessive dependence on a laryngoscope is avoided.

The embodiment of the invention provides a system and a method for measuring material strain by using a fiber bragg grating. The system comprises a refrigeration device, a cover body, a test bench, a fiber bragg grating strain sensor, a fiber bragg grating temperature sensor and a fiber bragg grating demodulator, the cover body covers the outer sides of the refrigeration device and the test bench, the test bench is arranged on a cold head of the refrigeration device, and a fiber narrow slit for placing the fiber bragg grating temperature sensor is arranged in the test bench. And the fiber bragg grating demodulator is respectively used for collecting the fiber reflection wavelengths of the fiber bragg grating strain sensor and the fiber bragg grating temperature sensor under the temperature change. By adopting the measuring method, the heating and cooling rate of the to-be-measured material can be controlled, the problem that the fiber grating excessively depends on a low-temperature liquid cold source when measuring the strain of the material at low temperature in the prior art can be solved, the experimental operation is simplified, and the problem that a large amount of low-temperature liquid raw materials are wasted is avoided.

The invention discloses a speech enhancement method based on non-local mean filtering. The problem of high generation rate of musical noise after speech enhancement in the prior art is mainly solved. The method is implemented by the following steps of (1) inputting speech with noise, and calculating a signal power spectrum of the speech with noise; (2) performing modified spectral subtraction preprocessing on the power spectrum of the speech with noise to obtain an estimated power spectrum of the speech with noise; (3) obtaining an estimated frequency spectrum according to the estimated power spectrum, and performing short-time inverse Fourier transform on the estimated frequency spectrum to obtain preprocessed speech; (4) performing non-local mean filtering on the preprocessed speech, and calculating a corrected value of the speech; and (5) replacing the original speech with noise by using the calculated corrected value. According to the method, similar points in a neighborhood of a point to be enhanced are subjected to weighted averaging based on a non-local principle, so that background noise can be suppressed, the clarity of the speech is maintained, and the quality of the speech is effectively improved; the method can be used for mobile communication.

The invention relates to a remote sensing satellite efficiency and cost balance optimization method. The method comprises the following four steps: designing a remote sensing satellite efficiency evaluation model; designing a remote sensing satellite multi-dimensional cost model; on the basis, taking a remote sensing satellite performance index, a reliability index and a weight index as optimization parameters, and designing a remote sensing satellite effect fee balance optimization model; and designing a fitness function based on the effectiveness and cost balance optimization model, solvingthe model by using a genetic algorithm to obtain an optimal solution, and feeding back an engineering unit. According to the invention, a comprehensive system integrating the remote sensing satelliteefficiency model, the multi-dimensional cost model and the efficiency balance optimization model is formed, and the optimal design scheme of the remote sensing satellite can be quickly and accuratelyobtained.

A non-local mean-guided PET image partial volume correction method constrained by MR structure information. The NLM search range is constrained by the MR structure information. While using the MR structure information, it can avoid the generated PET image from affecting the MR image. Over-reliance, improve PET image quality. The present invention uses MR structural information to correct the partial volume of PET images, improves the accuracy and efficiency of partial volume correction of PET images, uses the structural region of MR to constrain the search window of NLM, and reduces the excessive dependence of PET correction result images on MR images , to improve the accuracy of PET-corrected images.