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79results about How to "Solve blindness" patented technology

CFD (Computational Fluid Dynamics)-based modeling design method for nuclear main pump and designed million-kilowatt-grade nuclear main pump impeller

The invention discloses a CFD (Computational Fluid Dynamics)-based modeling design method for a nuclear main pump and a designed million-kilowatt-grade nuclear main pump impeller, belonging to the technical fields of design and manufacture of pumps. The CFD-based modeling design method for the nuclear main pump is characterized by comprising four steps of: 1, selecting a model pump impeller satisfying similar conditions with a pre-designed pump impeller according to the design parameters of a million-kilowatt-grade nuclear main pump; 2, calculating size conversion coefficients by utilizing a conventional modeling design formula, and selecting 3-4 different size coefficients within a certain range to convert the model pump impeller; 3, carrying out numerical simulation respectively on the 3-4 pump impellers obtained in the step 2, and carrying out logarithm fitting on a relation between the size coefficients and delivery lift to obtain the nuclear main pump impeller meeting requirements; and 4, optimizing the nuclear main pump impeller obtained in the step 3 to complete the design. The invention has the advantages that the design problem of the high-temperature and high-pressure large-flow million-kilowatt-grade nuclear main pump is solved, and a design process is concise, efficient and controllable.
Owner:DALIAN UNIV OF TECH

Side information generating system and method based on distribution type video encoding

InactiveCN101860748AMotion search is efficient and accurateSolve blockiness and ghosting issuesTelevision systemsDigital video signal modificationVideo communication systemEngineering
The invention discloses side information generating system and method based on distribution type video encoding, which belongs to the technical field of video encoding and mainly solves the problem that the original image information is lacked when the distribution type video encoding system is used to generate side information. The method has an encoder relevance calculating part, a decoder movement evaluating part, a movement smoothing part and a movement compensating part. The relevance among the original image frames is calculated by the encoder, and sent to the decoder. On the basis of relevance, forward and backward movements are evaluated by front and next decoded key frames, and the obtained movement vectors are detected and corrected. Then, the accurate movement vectors are obtained by the bidirectional movement evaluation and movement smoothing of an overlapped block. Finally, the side information is generated by the bidirectional movement compensation of the overlapped block. The invention greatly improves the object and subject quality of the side information and further enhances the quality of the decoded and restored image, and can be applied to the simple video communication system of the terminal equipment.
Owner:XIDIAN UNIV

Seeping hidden trouble detection and directional processing method and detection equipment for earth and rockfill dam

The invention relates to the field of reservoir reinforcement, and specifically belongs to a seeping hidden trouble detection and directional processing method and detection equipment for an earth and rockfill dam. Aiming at a problem that most of earth and rockfill dams in current water conservancy engineering have a problem of seepage, the invention provides a directional processing method integrating seepage inspection and seepage blocking. The objectives of the invention lie in judging an electrical property abnormal area of a seeping channel according to the testing result of the resistivity of the earth and rockfill dam, interpreting the specific distribution of hidden troubles through combining the technical data of the operation of the reservoir, carrying out the reasonable guide of subsequent reinforcement operations, optimizing the grouting technology, avoiding the blindness of seeping blocking construction, remarkably improving the project benefit and winning social reputation. The method and equipment are advantageous in that the method and equipment introduce the latest parallel electrical method detection technology into the seepage detection of the earth and rockfill dam, carry out reasonable grouting according to a detection result, achieve the integration of hidden trouble inspection and processing, and achieve a purpose of quick directional processing.
Owner:浙江广川工程咨询有限公司

Method and system for predicting amino acid mutation

The invention relates to the technical field of biological information, and discloses a method and system for predicting amino acid mutation. The method and system for predicting amino acid mutation aim at improving the accuracy and the effect of prediction and effectively solving the problems that bioexperiment is blind, the cost of the bioexperiment is high and the like. The method for predicting amino acid mutation comprises the steps of establishing a protein sample set; determining characteristics of prefiltering, and integrating characteristics of the same sample into one characteristic sequence to combinedly establish an initial characteristic set of the sample; screening out relatively important characters through a stable character selection algorithm to combinedly establish a first screening out characteristic set of the sample; screening out important characters through a sequence forward selection algorithm to combinedly establish the final screening out characteristic set of the sample; selecting a positive sample and a negative sample to establish a training set and an independent test set, substituting the final screening out characteristic set of samples in the training set into a gradient promoting tree algorithm to be subjected to training so as to obtain a final disaggregated model, and conducting assessment on a prediction result of the disaggregated model by combining the final screening out characteristic set of the independent test set.
Owner:CENT SOUTH UNIV

Software reliability forecasting method based on selective dynamic weight neural network integration

The invention belongs to the field of software reliability forecasting, and particularly relates to a software reliability forecasting method based on selective dynamic weight neural network integration. The software reliability forecasting method mainly includes the steps: A, generating neural network individuals: selecting Elman neural networks as network individuals and generating n neural network individuals by a Bagging algorithm; B, optimizing the individuals: firstly, determining the cluster number of the generated neural network individuals by a K value optimization algorithm, secondly, clustering the neural network individuals according to a K-mean clustering algorithm to increase individual difference, and finally, integrating the clustered individuals; C, building a dynamic model: building a dynamic weight model based on a fuzzy neural network by the aid of errors of fitting data of the optimized individuals; and D, performing integrated output: combining forecasting results of the optimized individuals with weights generated by the dynamic weight model to generate final forecasting results. A neural network integration algorithm is applied to software reliability forecasting, and the software reliability forecasting method has the advantages of high precision and fine stability.
Owner:CHINA UNIV OF PETROLEUM (EAST CHINA)

Method for predicting elastic cloud computing resources based on SARIMA-WNN model

The invention discloses a method for predicting elastic cloud computing resources based on an SARIMA-WNN model. The method comprises the steps that complementary advantages are achieved by using a seasonal autoregressive integrated moving average (SARIMA) model combining with a wavelet neural network (WNN) prediction model to improve the prediction accuracy; according to the SARIMA, seasonal periodic factors are added on the basis of an ARIMA model, periodic cloud resource demand data of a past section is input to a SARIMA (q, d, q)(P, D, Q) s model to obtain d, p, q, D, P and Q respectively;prediction is conducted on tranquilized and sequenced codes by using the SARIMA model, and a prediction result is marked as and an L residual value is marked as rt, wherein the prediction result andthe residual value can be obtained through the prediction; a model which conforms to elastic cloud source prediction is obtained through conducting training on the WNN network by using training samples, prediction is conducted aiming at the residual sequence rt, and the prediction result is marked as ; finally the prediction result of the SARIMA-WNN combined model is obtained. By means of the method, the problems of inaccuracy of a single model, poor effects of other combined models and the like are solved.
Owner:BEIJING UNIV OF TECH

Air opening dust accumulation detection method, air opening dust accumulation detection device and power generating unit

The invention provides an air opening dust accumulation detection method, an air opening dust accumulation detection device and a power generating unit. The environment temperature is detected through an environment temperature detection device; a temperature detector is used for detecting the temperature in a protection structure; then, a controller is used for collecting the environment temperature and the temperature in the protection structure and judging whether a difference value between the temperature in the protection structure and the environment temperature is greater than or equal to a first threshold or not; when the controller judges that the difference value between the temperature in the protection structure and the environment temperature is greater than or equal to the first threshold value, a first dust accumulation warning signal is outputted, at the moment, the condition that the accumulated dust at an air opening of the protection structure of the power generating unit needs to be cleaned can be known in time, and the blind waiting for manual regular cleaning is avoided, so the problems of the blindness of the manual regular cleaning and non timeliness in the prior art are solved.
Owner:SUNGROW SMART MAINTENANCE TECH CO LTD

Horizontal well horizontal section relative sand outlet deficit profile prediction and sand prevention section grading method

ActiveCN108331574AIncrease productionOptimize the sand control schemeSurveySoil scienceEconomic benefits
The invention relates to a horizontal well horizontal section relative sand outlet deficit profile prediction and sand prevention section grading method which comprises the steps that S1, distributionof reservoir rock mechanical parameter along the horizontal well horizontal section is calculated; S2, sand outlet critical production pressure difference distribution of the horizontal well horizontal section is predicted; S3, the actual bottomhole flowing pressure and the actual production pressure difference of all points of the horizontal section are calculated, and the bottomhole flowing pressure, namely, the bottomhole flowing pressure at the root end of the horizontal section is calibrated; S4, sand outlet net pressure difference is calculated, and dimensionless calculation is conducted to obtain a sand outlet strength index; S5, a relative sand outlet profile map of a horizontal well is drawn, the sand outlet deficit degree grade is divided, and he sand outlet degree is sectioned;and S6, the section grading scheme for section grading sand prevention is determined. Section grading sand prevention is guided by relative sand outlet profile prediction, the problem that general sand prevention of the horizontal well is high in blindness and poor in sand prevention effect is solved, the cost of sand prevention operation is reduced, long-term stable production of the horizontalwell is guaranteed, and economic benefits are increased.
Owner:CHINA UNIV OF PETROLEUM (EAST CHINA)

Acceleration method of ray tracing algorithm in home decoration design software

The invention discloses an acceleration method of a ray tracing algorithm in home decoration design software. The optimization of the ray tracing algorithm and the hardware acceleration of a GPU (Graphics Processing Unit) are combined, the optimized ray tracing algorithm is realized through CUDA (Compute Unified Device Architecture) programming, the ray tracking algorithm based on CUDA acceleration is realized on the high-grade GPU which supports recursion and the low-grade GPU which does not support the recursion, and the software and hardware combination of the optimization of the algorithm and hardware acceleration of the GPU is used for accelerating the rendering of the ray tracking algorithm. The acceleration method fully performs the advantages of a bounding box algorithm and a space subdivision algorithm, solves the blindness problem of ray and bounding box traversal, is simple, is obvious in acceleration effect, is simple in implementation, avoids a phenomenon that a great quantity of data is transmitted between a CPU (Central Processing Unit) and the GPU, fully utilizes the own memory of the GPU, and provides a superexcellent implementation scheme for the algorithms including the ray tracking algorithm and the like which operate on the CUDA and need recursion.
Owner:常州赞云软件科技有限公司

Machine tool metering parallel

A machine tool metering parallel comprises a parallel base, a wedge, a lower seat pad, an upper seat pad and an adjusting bolt, wherein the outer end of the adjusting bolt is arranged on the sidewall of the parallel base, the inner end is rotatablely arranged in the bolt of the sidewall of the wedge, an inclined plane is arranged on the bottom surface of the inner cavity of the parallel base, the inclined plane is provided with a groove, the upper end face of the wedge is a plane and the lower end face is an inclined surface provided with a boss I, the wedge is arranged on the inclined plane of the parallel base, the boss I is arranged in the groove; a seat pad base is arranged on the upper end face of the wedge, an upper parallel is arranged in the cavity of the seat pad base, the upper seat pad is above the lower seat pad, the arc convex of the low end face of the upper seat pad is matched with the arc concavity of the upper end face of the lower seat pad; in addition, through holes used for passing a foundation bolt through are arranged in the middles of the parallel base, the wedge, the seat pad base, the upper seat pad and the upper seat pad. The machine tool metering parallel of the invention can be used to measure and display the pressure of the parallel and provide reliable technical data for debugging and installing the machine tool.
Owner:秦川机床工具集团股份公司

Order agricultural system based on demand of each nutrient required by consumer health

PendingCN112348692ASatisfaction and guarantee of nutritional and healthy dietary needsSolve blindnessNutrition controlBuying/selling/leasing transactionsNutrientNutrition
The invention discloses an order agricultural system. The core structure is as follows: a module M1 which calculates the types and weights of foods needed by an individual or/and a crowd in each day in a certain period of time in the future based on the demands of the health of the individual or/and the crowd for various daily nutrients, a module M2 which is used for counting and summarizing the types and the weights of the various foods obtained in the step M1 according to time periods and regional distribution, and obtaining distribution big data of the types and the quantities of the required primary agricultural products matched on a time axis and in a regional space dimension, and a module M3 which is used for distributing the primary agricultural product demand order obtained in thestep M2 to related producers to arrange agricultural production and deliver the order on schedule. The method scientifically solves the problem of blindness which puzzles agricultural production for along time, can effectively avoid the social stubborn diseases that the supply of various agricultural products is greater than the demand and unsalable waste or the supply is short, and can scientifically and reasonably meet and guarantee the nutritional and healthy diet demand which puzzles consumers for a long time.
Owner:LEHUO NATURAL BEIJING TECH CO LTD

Influence factor analysis method and device for neural nodes of convolutional neural network

The invention discloses an influence factor analysis method and device for neural nodes of a convolutional neural network. The invention provides a convolutional neural network visualization algorithmbased on a PageRank. A general module required in most convolutional neural network training processes is provided; wherein the functions include parameter adjustment, important node selection, calculation amount reduction, normalization processing, important influence factor analysis, input and output result flow direction and the like. And the method can be integrated with any standardized convolutional neural network and various indexes for evaluating the important association degree of the nodes, so that high-efficiency and high-precision association analysis is realized, and the existingdata is utilized to the maximum extent. The problems of blindness and uninterpretability of a result during parameter adjustment of a traditional convolutional neural network and low interpretability, low efficiency, time waste and the like of model adjustment and optimization depending on global traversal of all parameter combinations and algorithm parameter adjustment experience are solved, andthe interpretability of the convolutional neural network and the accuracy of the model are further improved.
Owner:CHENGDU SEFON SOFTWARE CO LTD

Automatic control system for water quality of industrial boiler

The invention provides an automatic control system for water quality of an industrial boiler. The automatic control system comprises an automatic dosing system, an automatic sewage discharging system, an automatic monitoring system and a PLC central control system, wherein the automatic dosing system is connected with a dosing opening of the industrial boiler; the automatic sewage discharging system is connected with a sewage discharging opening of the industrial boiler; the automatic monitoring system is connected with a sampling opening of the industrial boiler; the automatic monitoring system automatically monitors the water quality of the industrial boiler in real time and transmits the monitoring results to the PLC central control system; the PLC central control system controls the dosing type, the dosing mode, the dosage and the dosing timing of the automatic dosing system according to the results, and controls the sewage volume and the sewage discharging timing of the automatic sewage discharging system. The automatic control system can automatically monitor the water quality of the industrial boiler system in real time and automatically performs dosing and sewage discharging according to the monitoring results, so as to control the water quality within the standard range.
Owner:江苏凯弘新能源管理有限公司

LNG storage tank automatic pre-cooling system based on efficient communication and pre-cooling method

The invention provides an LNG storage tank automatic pre-cooling system based on efficient communication and a pre-cooling method. A CFD numerical simulation module is used for conducting pre-cooling process simulation, and initial flow parameters are provided for the pre-cooling process; and the point positions are installed on a storage tank in a modularized manner, and signal transmission between all sensors in the pre-cooling system and an integrated operation platform is achieved through 5G technology. According to the LNG storage tank automatic pre-cooling system and the pre-cooling method, limit values of parameters such as temperature drop rate, thermal stress, temperature difference between two adjacent points, inner tank pressure and the like are set on the basis of the integrated operation platform, monitoring results and the limit values are compared and analyzed, and then an electric control valve module and a variable frequency pump module are automatically adjusted, so that the conveying flow of a pre-cooling medium is adjusted, and it is guaranteed that the pre-cooling process is stably and safely carried out. According to the LNG storage tank automatic pre-cooling system and method, automatic, integrated and integrated control over the pre-cooling process can be achieved, monitoring personnel do not need to be arranged at monitoring points for a long time, potential safety hazards are avoided, manpower and material resources are saved, pre-cooling control is more accurate, and the pre-cooling efficiency is high.
Owner:CHINA CONSTR IND & ENERGY ENG GRP CO LTD
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