53results about How to "Ease of performance evaluation" patented technology

The invention provides a frequency sweep and mobile phone measurement report-based method for automatic frequency optimization. The method specifically and efficiently grasps the improvement of wireless coverage quality on user groups from user group hierarchy, associative network quality and user awareness through the association and integration of frequency sweep data and mobile phone measurement report data so as to achieve a better balance among the user awareness, the network quality and various performance assessment indexes, reduce blindness and avoid fluctuations in network quality.

The invention discloses a multi-node comprehensive simulation system and method. The system comprises a scene simulation module, a simulation main control module, a network simulation module, a channel transmission simulation module and a physical platform. The method comprises the steps that a scene simulation module operates according to a preset script to generate a formatted message; each nodeadvances on a specified map according to the scene script, and in the operation process, if the environment change is found, a simulation main control program is notified to adjust a link model in achannel transmission simulation module; the channel transmission simulation module converts and receives the data information sent by the scene simulation module through a simulation main control program; the network simulation module feeds back the packet loss condition of a data packet to the simulation main control module in real time, and the simulation main control module maps the packet losscondition to each node deduction process of scene simulation to simulate the influence of data transmission in a complex environment on scene simulation so as to form a simulation closed loop. According to the method, the requirements of various comprehensive simulations are met, and the development cycle and difficulty of the system are reduced.

The invention discloses a rapid radar performance assessment method in a sea cluster background. The main idea is as follows: through performing Doppler frequency discretization on distance rings corresponding to distance gates of airborne radar echo signals, corresponding cluster block positions and a cluster block area are obtained, after single-pulse echo power of a target is obtained according to the airborne radar echo signals, cluster block power is calculated, based on this, a covariance matrix of the radar echo signals is constructed, an original distance Doppler graph is formed, accordingly, an expanded distance Doppler graph is obtained, then after the output signal-to-noise ratio of the position of the target is calculated when the target position changes, a detection blind area graph under the condition of multiple single repeated pulse frequencies is obtained, accordingly, a detection blind area graph under a 2 / 4 criterion is formed, according to the detection blind area graph under the 2 / 4 criterion, the maximum detection distance and the minimum detectable speed of the target are obtained when an airborne radar cross section is determined, and accordingly, whether the performance of an airborne radar meets design requirements is determined.

The invention belongs to the field of biomedical science, and aims to provide a high metastatic potential hepatoma cell line capable of steady autophagy indication, and an establishment method and an application method thereof. Lentivirus expression vectors containing EGFP (enhanced green fluorescent protein)-LC3 (light chain 3) autophagy reporter genes are constructed and used to infect hepatoma cells with high metastatic potential, so that host cells can express the EGFP-LC3 steadily and efficiently and indicate autophagy changes of the hepatoma cells steadily. To apply the cell line, metastasis research models can be established in vitro and in vivo for the observation on autophagy changes during metastasis, and the cell autophagy changes can be analyzed rapidly and quantitatively by adopting an image analysis method based on Top-hat operators and morphological filter. The high metastatic potential hepatoma cell line has the characteristics that autophagy indication is conducted steadily, reliably and sensitively in a real-time manner, the metastasis occurs definitely, the autophagy is quantified rapidly and accurately, the operation is simple and convenient, and the like, and can greatly facilitate correlation study on autophagy and metastasis.

The invention provides a method and system for detecting and verifying partial discharge of a power transformer through ultrasonic sensors. The method for detecting and verifying the partial discharge of the power transformer through the ultrasonic sensors includes the steps that A longitudinal wave detection is carried out on the ultrasonic sensors, B the ultrasonic sensors carry out partial discharge detection on the power transformer, and C the ultrasonic sensors carry out positioning detection on the partial discharge. The system for detecting and verifying the partial discharge of the power transformer through the ultrasonic sensors includes an ultrasonic sensor longitudinal wave detection system, an ultrasonic sensor power transformer partial discharge detection system and an ultrasonic sensor power transformer partial discharge positioning detection system. Compared with the prior art, the method and system for detecting and verifying the partial discharge of the power transformer through the ultrasonic sensors achieves the performance evaluation of the power transformer partial discharge and positioning detection accurately, simply and conveniently through the different sensors.

The invention discloses an image reconstruction method. The method comprises obtaining at least three images of a same scene, selecting the two adjacent images of an image Ii and an image I (i+1) to perform initial reconstruction on the scene, reconstructing the scene by using the image I (i+1) and a selected image I (i+2) adjacent to the image I (i+1) and deleting repeated reconstruction points generated during reconstruction. The invention further discloses an image reconstruction system. By means of the image reconstruction method and system, the precision and accuracy of image reconstruction can be improved, and the evaluation process is simple and practical.

The invention belongs to the field of micro-organism animal cell line and relates to a human hepatoma cell line which can emit high-intensity red or green fluorescence and has high transferring ability of lung and lymph node metastasis, and a method for establishing the same. The method comprises the following steps: using the human hepatoma cell line HCCLM3 and HCCLM6 which have high transferring ability of the lung and lymph node metastasis as mother cells, performing cotransfection on plasmid DNA of 239 cells through slow virus packaging plasmids to obtain false slow virus particles by expressing red or green fluorescent protein genes through eucaryon, and infecting liver cancer cell strains of the mother cells to obtain the chromosome integrated hepatoma cell line which has high transferring ability of the lung and lymph node metastasis and can stably expressing the red or the green fluorescence. The human hepatoma cell line which has high transferring ability of the lung and lymph node metastasis in vitro can be applied to the tracer studies on tumor cells, the molecular mechanism studies on the recurrence and transferring of liver cancer, as well as the pre-clinical drug efficacy studies on new anti-tumor drugs, thus the human hepatoma cell line has wide application prospect.

The invention provides an all-steel-assembled buckling restrained brace with the lateral side capable of being inspected. Welded joints at the ends of stiffening ribs are smoothed, the low-cycle fatigue performance of the brace is effectively improved, the plastic deformation capability of steel is adopted, and meanwhile the state of an inner core can be easily judged through the lateral side after a seism. The all-steel-assembled buckling restrained brace solves the problems that the deformation or damage state of the inner core cannot be conveniently evaluated rapidly after a seism, the welded joints at the ends of the stiffing ribs have quality defects, and the damaged inner core cannot be conveniently replaced. The buckling restrained brace achieves the aims that the deformation state of the inner core can be judged without detaching, and whether the inner core should be replaced or not can be rapidly evaluated after a seism; the welded joints at the ends of the stiffing ribs are processed, the middle cross section of the inner core is possibly damaged, and the low-cycle fatigue performance of the brace is improved; an assembled scheme is adopted, and the damaged inner core can be conveniently replaced. The all-steel-assembled buckling restrained brace comprises the inner core, the end stiffing ribs, two restrained face plates, gaskets, limiting grooves and high-strength bolts.

The invention, which belongs to the technical field of performance testing equipment for the Mecanum wheel, relates to an integrated detection and testing apparatus for a Mecanum wheel. A vertical loading mechanism that can be loaded movably at a vertical direction is used for carrying out bearing simulation on a Mecanum wheel; a wheel set angle rotary table that enables the rotation angle of the Mecanum wheel to be rotated along the vertical direction is used for realizing simulation of the Mecanum wheel at different walking directions; a wheel set drive mechanism that can drive the Mecanum wheel to rotate along the axis is used for realizing simulated driving walking of the Mecanum wheel; a pavement simulation table board that is similar to a table board of a running machine and can move horizontally is used for realizing simulation of a walking pavement state and a friction force of the Mecanum wheel; and a mobile carrying trolley that can carry a Mecanum wheel to move horizontally is used for realizing loading and unloading of a to-be-detected Mecanum wheel.

The present invention relates to a power stage stimulation driving system and method for permanent magnet synchronous motors. The system comprises two bidirectional power converters, voltage samplingof three-phase ports of a drive-side converter, a motor model, a motor drive controller, a real-time induced electromotive force observer, an induced electromotive force controller, a DC voltage source, and a resistance network. According to the system and method provided by the present invention, the induced electromotive force of the permanent magnet synchronous motor can be simulated, and the steady-state and transient simulation of the electrical and mechanical behaviors of various permanent magnet synchronous motors can be realized through the combined effect of the resistance network andthe power converters; and the system provides a simulation test environment close to the real working condition for early fault diagnosis, performance evaluation under the extreme condition, and aging testing of converters used in the field of motor drive, real motors and mechanical loads are eliminated, test efficiency is improved, and the waste of energy is avoided.

The invention discloses a testing and correction method of a square resistance in an ohmic contact area for mainly solving the problems of inaccurate calculation and complex calculation process of the square resistance Rshc in the ohmic contact area in the prior art. The realization scheme comprises the steps of manufacturing two groups of similar round ohmic contact testing patterns, wherein each group comprises a round ohmic electrode and two concentric ring-shaped ohmic electrodes; then testing the total resistance of the two groups of the round testing patterns, respectively; and correcting the value of the square resistance Rsh in an active area by utilizing a correction formula so as to further calculate the value of the square resistance Rshc in the ohmic contact area accurately. The correction method of the square resistance in the ohmic contact area has the advantages of simple and easily-manufactured testing patterns, simple calculation and accurate result, and can be used for technology detection and performance evaluation of semiconductor devices.

The invention provides a lymph gland targeted metastatic human hepatoma cell strain. The mother cell is a red fluorescent protein-expressed hepatoma cell HCCLM3-R. The human hepatoma cell strain is characterized in that the cell is named as lymph gland targeted metastatic human hepatoma cell strain HCCLM3-R-LnM1 according to the classified nomenclature with a preservation number of 3645, and has the following biological characteristics: the cell is polygonal epithelioid and is in adherent growth and loss of contact growth inhibition, is of a hypo-triploid karyotype, and has 50-58 of chromosomes each of which secretes AFP proteins. The establishing method comprises the following steps: using subcutaneous and liver orthotopic transplantation tumor models of a nude mouse to carry out spontaneous lymphatic metastasis screening, and then carrying out in-vitro cloning, amplification and purification on the lymphatic metastasis human hepatoma cell. The invention has wide application prospects and potential social and economic values in the basic research on hepatoma and the pre-clinic research on medicament.

A magnetic disk block detection method and a device comprise the following steps: mapping each block number of a first auxiliary magnetic disk block collection of a first magnetic disk block collection to a bloom filter array by using a hash function; arranging an original value of location mapped by each block number to be a first characteristic value, and arranging original values of all locations in the bloom filter array to be second valves; mapping the block number of the detected magnetic disk block into the bloom filter array by using the hash function; judging whether the detected magnetic disk block belongs to the bloom filter array according to the valve of the mapped location of the block number of the detected magnetic disk block; and confirming the detected magnetic disk block is a free magnetic disk block or a non-free magnetic disk block according to the fact that whether the detected magnetic disk block belongs to the bloom filter array, so that the fact that disk reading operation is only conducted when the bloom filter array is built or judgment cannot realized is achieved, and file system check (FSCK) speed is improved.

The invention discloses an MEMS inertial measurement unit with crossing axis coupling error compensation. The MEMS inertial measurement unit comprises three axial MEMS analog output gyroscopes and signal collecting circuits thereof, three axial MEMS digital output accelerometers and signal collecting circuits thereof, a gyroscope data conversion module, a crossing axis coupling error compensation module, a serial port communication circuit and a power supply configuration circuit, wherein the three axial MEMS analog output gyroscopes and the signal collecting circuits thereof are used for realizing the collection of gyroscope signals; the three axial MEMS digital output accelerometers and signal collecting circuits thereof are used for realizing the collection of accelerometer output signals; the gyroscope data conversion module is used for realizing the analog-digital conversion of the gyroscope data; the crossing axis coupling error compensation module is used for realizing the data treatment for the analog output gyroscopes and the digital output accelerometers; the serial port communication circuit is used for realizing the communication with an upper computer; the power supply configuration circuit is used for supplying various power supplies to the whole measurement unit. The MEMS inertial measurement unit not only can realize the collection of the carrier six-axis position information but also can eliminate the crossing axis coupling error caused by processing and mounting.

The invention provides a lung-targeting metastatic human hepatoma cell strain and an establishing method thereof. The lung-targeting metastatic human hepatoma cell strain is characterized in that the mother cell is a red fluorescent protein expression hepatoma cell HCCLM3-R; the cell is named as a lung-targeting metastatic human hepatoma cell strain HCCLM3-R-LM1 by classifying, has the preservation number of 3644, and has the following biological characteristics that the cell is in polygonal epithelium shape, grows clinging to the wall, loses contact growth inhibition, has a hypo-triploid caryogram with the chromosome number of 50-58, secretes AFP protein, and has lung-targeting metastatic clonal selection advantage. The establishing method comprises the following steps of: sieving by adopting nude mouse subcutis and liver orthotopic implantation tumour model autogenetic lung metastasis, and then carrying out in-vitro cloning, purifying and propagating on the lung-targeting metastatic human hepatoma cell. The invention has wide application potential and potential societal and economic benefits in basic research of hepatoma and clinic previous research of medicines.

The invention discloses a millimeter wave lens antenna array communication system channel estimation method, relates to the technical field of information and communication, and aims to solve the problems of low channel estimation precision, high complexity, poor scene adaptability and difficulty in performance evaluation due to the fact that the number of radio frequency chains in the millimeterwave lens antenna array communication system is far less than that of antennas. The method mainly comprises a beam space channel vector support acquisition method, a DOA and complex gain estimation method according to a preliminary recovery result of a sparse beam space channel, a multipath inter-component interference elimination method based on orthogonalization processing, and a system performance evaluation and parameter design method. Simulation results show that compared with an existing method, the method is higher in estimation precision, lower in complexity, less in environment priorhypothesis and higher in method performance predictability.

A distributed node collaboration method based on a blockchain comprises the steps of presetting rules for distributed nodes and the block chain according to function requirements, such as basic configuration of the blockchain and the nodes, determination of a transaction data structure, writing and deployment of an intelligent contract; monitoring the transaction update of the block chain and the external state change by the node at the same time as a trigger condition of collaborative state evolution; generating a task by the node according to the received trigger information and a preset rule, wherein the generation process comprises task issuing and task receiving; executing actions by the node according to task requirements, and processing abnormal conditions such as interruption and adjustment according to the smart contract; and feeding back an execution result to the blockchain by the node for evaluation and auditing. According to the method, the matching of the block chain and the distributed node system on the system architecture is utilized, the characteristics of intelligence, safety, robustness and the like are enhanced on the basis of realizing the collaborative demand of the distributed nodes, and the method can adapt to different occasions and demands and is relatively high in practicability.

The invention discloses an automatic construction method for an evaluation stimulus of a multi-thread cross double-precision short-vector structure. The method comprises the following steps of: inputting a vector operation type to be evaluated and a vector length to be evaluated; automatically creating an empty assembly language file which serves as the evaluation stimulus; writing contents such as a multi-thread running initial code segment, an evaluation stimulus control structure, a multi-thread vector operation program segment, an evaluation stimulus synchronization structure, a data segment and a data segment initialization statement into the assembly language file; and forming the integral evaluation stimulus of the multi-thread cross double-precision short-vector structure. By the method, the evaluation stimulus can be automatically constructed in batches, a construction time length can be decreased, cost can be saved, evaluation stimulus development efficiency can be improved, a processor can be conveniently verified, and the performance of the process can be conveniently evaluated.

The invention provides a composite current density test method and test screen of a silicon wafer surface metallization interface, and the method comprises the steps: selecting a silicon wafer, dividing the silicon wafer into a first part and a second part, and carrying out the metallization of the surface of one side of the second part; cleaning the silicon wafer, and respectively performing testing to obtain the composite current density J0test1 of the first part and the composite current density J0test2 of the second part, wherein the composite current density J0me-Si of the silicon wafer surface metallization interface can be obtained by calculating through the J0test2 obtained through testing in combination with the composite current densities J0s1 and J0s2 of the surface of the firstpart and the metallization area proportion of the second part. According to the testing method disclosed by the invention, the composite current density J0me-Si of the silicon wafer surface metallization interface can be directly obtained by testing different positions of the silicon wafer, thereby facilitating the slurry performance evaluation and process optimization. Moreover, the test processis simpler, and the material consumption is reduced.

The invention discloses a capillary pipe air resistance measurement device and a measurement method. The device includes a two-stage series closed-loop voltage regulated air source, a measurement module, a hardware control system, and a computer. High-precision and stable air pressure is provided by the two-stage series closed-loop voltage regulated air source; the measurement module measures thetemperature and the air pressure of the input and output ends of the capillary pipe and the flow through the capillary pipe, and an independently-designed connector can reduce influences of pipe connection and sensor installation on air flow in the pipe to the minimum, and the measurement result precision is improved; and closed-loop control of the two-stage series closed-loop voltage regulated air source, pipe pressure adjustment and sensor data transmission can be realized by the hardware control system; and an air resistance value is calculated according to a formula R=lambdarhol / A by a computer program, after one measurement is completed, the data are saved, a characteristic curve of air resistance under different input air pressures is drawn, and the air resistance characteristics canbe analyzed at the same time.

The invention discloses a comprehensive performance measurement and control system of a lifter. The lift comprises a measurement and control terminal, a monitoring system and a control system, whereinthe monitoring system and the control system are in signal butt joint with the measurement and control terminal correspondingly, the control system comprises an uplink and downlink control unit, a lifter car door control unit, an emergency stop control unit, a maintenance control unit and a landing door switch control unit, wherein the monitoring system comprises a stress monitoring unit, a wirerope state monitoring unit, a landing door monitoring unit, a current voltage monitoring unit and a car running state monitoring unit. When the comprehensive performance measurement and control systemof the lift is applied, the comprehensive running state and performance of the lifter can be detected in real time, so that the daily management, the periodic inspection and the performance evaluation of the lifter are facilitated, the abnormal situation in the running process of the lifter can be found in time, and the safe and stable operation of the lifter can be guaranteed.

The invention discloses an engineering structure mechanical strain testing method and device capable of eliminating a temperature influence. It is discovered that an actual strain of an engineering structure comprises an influence of external constraints or materials on the engineering structure in addition to a mechanical strain of the structure, so that the expansion or contraction deformation is unlikely to freely occur, an effective temperature strain of the engineering structure corresponding to an engineering structure stress is caused, and first strains of the engineering structure under the condition that an external mechanical load effect does not exist at different environment temperatures are obtained through a temperature compensation method to establish relations between the environment temperatures and first dependent variables; then the actual strain of the structure under the condition that the mechanical load effect exists at a working environment temperature is measured; and according to a single-variable principle, the first strain of the engineering structure under the condition that the external mechanical load effect does not exist at the corresponding temperature is subtracted according to the actual strain of the engineering structure at the working environment temperature to counteract the effective temperature strain of the engineering structure, and the mechanical load strain of the engineering structure is obtained, so that the influence of the external mechanical load effect on the structure is accurately reflected, and the performance evaluation of the engineering structure is facilitated.

The invention discloses a prediction system, a method, a medium and an online service platform for light perception-free eye prognosis analysis, and relates to the technical field of eye trauma postoperative information processing. A clinical feature acquisition module is used for acquiring clinical samples from multiple centers and multiple hospitals based on out-group and in-group conditions designed by experts in the medical field, quantifying clinical features of each sample and constructing a data set; a data exploration and preprocessing module performs data cleaning, type conversion and missing value interpolation on the constructed data set; a prediction model construction and evaluation module is used for establishing a preoperative model and an intraoperative model, and performing performance evaluation and optimization on the models obtained in the training process; a data prediction module is used for predicting vision prognosis of open eye trauma light perception-free eyes; and systematic explanation of influence of clinical characteristics on prognosis is given at an individualized level. The method provides help for doctors to know postoperative outcome of affected eyes, provides intuitive postoperative result prediction for patients, reduces the difference between the patient expectation and the result, and improves the patient satisfaction.

The invention discloses a method for realizing a componentized multi-core system simulator with a precise clock. The method takes a multi-core processor as a simulated target, takes componentization as a starting point, encapsulates composition parts of a multi-core system structure as components, guarantees the assembly configuration with the components as a unit, and has good flexibility. The method not only can simulate the motions of in-core pipelines, but also can simulate the motions among a plurality of processor cores. The method realizes the componentized multi-core system simulator with a precise clock, can simulate the motions of the in-core pipelines as well as the motions among the processor cores, takes componentization as the starting point, encapsulates the composition parts of the multi-core system structure as components, guarantees the assembly configuration with the components as the unit, and has good flexibility.

The invention relates to a design method of a miniaturized focal plane array test data acquisition and display system, which comprises the following steps: S1, determining the overall architecture of the focal plane array test data acquisition and display system; S2, in a lower computer, carrying out digital logic design on an FPGA part in the SoC chip, providing a working time sequence needed by the focal plane array, collecting data obtained by the focal plane array, wherein a working time sequence signal is synchronized with a main clock; s3, in the lower computer, performing high-level language program design on an ARM part in the SoC chip, and processing interrupt requests respectively from the FPGA and the upper computer by adopting a double-interrupt technology to realize data exchange between the upper computer and the lower computer; and S4, in the upper computer, designing a graphical interface by adopting a .NET framework to control the lower computer, realizing data receiving and decoding, and displaying the decoded data in real time in a three-dimensional or two-dimensional mode by utilizing OpenTK.

The invention provides a VIRTIO network equipment delay positioning method, a processing unit and VIRTIO network equipment. The method comprises the following steps: acquiring current system time driven by a VIRITO front-end network, and writing the current system time into a time synchronization module; a timestamp is added to the head or the tail of a network data packet to be sent to form an updated network data packet, and the updated network data packet is stored in a VIRITO front-end network driver; acquiring a first moment when the updated network data packet is sent to a descriptor table reading module, a second moment when a used ring table updating module, a third moment when a message interruption module and a fourth moment when an Ethernet data packet interface module; and according to the difference values between the first moment, the second moment, the third moment and the fourth moment and the timestamps, positioning the delayed module in the VIRTIO network equipment. According to the scheme, accurate positioning of the delay of the VIRTIO network equipment is realized.

The invention discloses an automatic construction method for an evaluation stimulus of a multi-thread cross double-precision short-vector structure. The method comprises the following steps of: inputting a vector operation type to be evaluated and a vector length to be evaluated; automatically creating an empty assembly language file which serves as the evaluation stimulus; writing contents such as a multi-thread running initial code segment, an evaluation stimulus control structure, a multi-thread vector operation program segment, an evaluation stimulus synchronization structure, a data segment and a data segment initialization statement into the assembly language file; and forming the integral evaluation stimulus of the multi-thread cross double-precision short-vector structure. By the method, the evaluation stimulus can be automatically constructed in batches, a construction time length can be decreased, cost can be saved, evaluation stimulus development efficiency can be improved, a processor can be conveniently verified, and the performance of the process can be conveniently evaluated.

The invention discloses a LabVIEW-based household monitoring system of wind-solar-diesel hybrid power generation. The monitoring system is composed of a hardware part and a software part. The hardwarepart consists of a wind-solar-diesel hybrid power generation system, a sensor module, a signal conditioning module, a data acquisition card, and a PC machine. The software part that is developed based on a LabVIEW platform and is used for displaying monitoring data consists of a photovoltaic cell panel monitoring module, wind power monitoring module, a storage battery monitoring module, an inverter monitoring module and a diesel generator monitoring module. According to the monitoring system, the sensor module is used for sending various collected analog signals of a wind-solar-diesel hybridpower generation system to the signal conditioning module to carry out differential amplification, filtering, and then outputting; the data acquisition card carries out analog-digital conversion and is connected to the PC machine through a PCI bus to carry out displaying. The system can be installed conveniently; measurement is done accurately; the extensibility is high; various data of the wind-solar-diesel hybrid power generation system can be collected in real time; and the data information can be displayed and stored.

The invention provides an air quantity measuring device of a computer fan, which comprises an air guide sleeve and a stating ring, wherein, the centers of the air guide sleeve and the stating ring are both provided with a portiforium correspondingly; the stating ring is provided with at least one hot wire airspeed probe; a probing end of the hot wire airspeed probe is extended into the portiforium of the stating ring; the air guide sleeve tightly fits the stating ring. A measuring bench of the computer fan can be placed at the outlet of a computer system fan, the air guide sleeve is used to lead the air exhaust of the system fan to pass through the hot wire airspeed probe, the air quantity of the computer fan can be received by matching with an airspeed measuring device, thereby facilitating the performance evaluation of the computer fan.