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38 results about "Model study" patented technology

Study model. A diagnostic cast of an impression of the dental arches or a part thereof, trimmed with the arches articulated and the edges perpendicular to the occlusal plane. The study model serves as the basis for construction of dental appliances, dentures, or orthodontic treatment.

Device for testing performance of injector

ActiveCN106089492AImprove the effect of medium atomizationImprove combustion stabilityRocket engine plantsCombustionWater flow
The invention provides a device for testing the performance of an injector. The device comprises a water inlet collector (1), multiple water inlet pipelines (2), an upper cover (3), a water inlet cavity (4), a lower cover (5) and a liquid collector (6). Inlets of the multiple water inlet pipelines are connected with an outlet of the water inlet collector. Outlets of the multiple water inlet pipelines lead to the water inlet cavity. The water inlet cavity (4) is formed around an inlet of a main fuel way at the lower end of the injector, and the upper cover is matched with the water inlet cavity to lead water into the inlet of the main fuel way. The liquid collector (6) is located in an outlet cavity of the injector and used for collecting flow of the main fuel way. The lower cover is located below the water inlet cavity and is matched with the water inlet cavity to achieve collection and measurement of the flow of a cooling way. By means of the device for testing the performance of the injector, due to the structural design of the device, it is ensured that water flows into a runner and flows out of the runner according to requirements, the flow of the runner is ensured, it is ensured that a test can be conducted smoothly, product test data are obtained, a basis is provided for model study, and therefore the medium atomization effect and the combustion stability of an engine are improved.
Owner:XIAN AEROSPACE PROPULSION INST

Rock burst early warning method and system in complex geological occurrence environment

ActiveCN106285782AAccurately describe the shape of the spreadPromote research and developmentMining devicesTectonic stressInformation analysis
The invention relates to a rock burst early warning method in a complex geological occurrence environment. The rock burst early warning method in the complex geological occurrence environment comprises the following steps that S1, a three-dimensional visualization numerical model of a complex tectonic belt is built; S2, the stress triggering conditions of geological tectonic stress field sudden changes and rock burst are analyzed according to the three-dimensional visualization numerical model; S3, the power surge mechanism of occurrence of rock burst is researched and judged according to the three-dimensional visualization numerical model; and S4, according to the analysis results in the steps S2 and S3, a rock burst foreboding information analysis method comprehensively judged based on a sensitive parameter is formed, and early warning of rock burst is carried out. The rock burst early warning method in the complex geological occurrence environment can provide a theoretical basis for remote on-line monitoring, intelligent judgment and real-time early warning of rock burst.
Owner:CHINA UNIV OF MINING & TECH (BEIJING)

Depression patient suicide risk objective assessment model based on functional nuclear magnetic resonance

The invention discloses a depression patient suicide risk objective assessment model based on functional nuclear magnetic resonance. The model works in the following steps of (1) building an evaluation model including (a) calculating full-brain function connection matrix, (b) constructing a feature set and (c) clustering, (2) verifying result stability, (3) conducting polynomial curve fitting, and (4) evaluating individuals via the model. The depression patient suicide risk objective assessment model based on functional nuclear magnetic resonance is advantageous in that (1) the model is driven by pure data; patient suicide tendency is screened totally according to a model research of a depression patient brain zone signal; without artificial judgment participation, errors due to subjective factors can be avoided; (2) individuals hard to be evaluated can be objectively evaluated according to extreme conditions easy to be judged by experts and without prior knowledge; and (3) by the use of the depression patient suicide risk objective assessment model based on functional nuclear magnetic resonance, suicide tendency of the depression patient can be determined and suicide tendency degree of the patient can be achieved according to model research results.
Owner:SOUTHEAST UNIV

Vertical water temperature mixing inversion effect observation method and apparatus in front of reservoir dam

The invention discloses a vertical water temperature mixing inversion effect observation method and apparatus in front of a reservoir dam. The method comprises: observation vertical line arrangement, vertical line observation point arrangement, and observation work period arrangement of vertical water temperature mixing inversion dynamic changing in front of a reservoir dam in a water temperature layering mode are put forward according to actual vertical water temperature structure mixing inversion dynamic changes of the water domain in front of reservoir dam in a water temperature layering mode in different seasons. Besides, the observation apparatus includes a floating ball, a probe chain, and a plurality of on-line water temperature and water level observation probes arranged on the probe chain. The probe chain is connected to the bottom of the floating ball; and a balance weight is arranged at the bottom of the probe chain. With the observation method and apparatus, the observation working technique level and result quality of the water temperature change and distribution rule system of water bodies like a river or a dam are improved; defects in prior art are overcome; and the mathematic model study, empirical formula improvement and computation software development and research work level for the water temperature changing rule of a river or a dam are further enhanced.
Owner:CHINA POWER CONSRTUCTION GRP GUIYANG SURVEY & DESIGN INST CO LTD

Deformation prediction method for slope three-dimensional entity

The application of the method relates to the field of exploitation of the open pit mine and side slope engineering management and the like. With the integration of the research result on single model prediction, the research result on combined model prediction, and the research result on overall deformation prediction of a side slope monitoring line, a deformation predication method for the side slope three-dimensional entity is provided; the deformation predication method skillfully combines a static modeling method with a dynamic method, thus solving the difficulty in the overall prediction of the slope three-dimensional entity; with the deformation prediction method for the slope three-dimensional entity, the deformation condition of the side slope in long time can be predicted; simultaneously, a gray system model and a time sequence ARMA (Autoregressive moving average model) are adopted in predication, a precise predication result is obtained; and the comprehensive research on the long-time deformation predication of the side slope three-dimensional entity refers to the comprehensive application of four methods such as the deformation predication, the long-time predication, the single model predictionand the rolling combination predication of the side slope three-dimensional entity, the predicting outcomes has very high reliability.
Owner:NORTH CHINA UNIVERSITY OF TECHNOLOGY

Simulation model for evaluating performance parameters of vehicle power battery

The invention relates to a simulation model for evaluating the performance parameters of a vehicle power battery. The simulation model comprises a basic parameter input model, an algorithm model, an oscilloscope model and a failure warning model. The basic parameter input model is used for conducting input configuration according to the specific parameters of the vehicle power battery which is actually evaluated. The algorithm model is used for conducting real-time simulation calculation on the performance parameters of the battery. The oscilloscope model displays a two-dimension curve of dynamic change of each performance parameter in real time according to simulation data calculated by the algorithm model. The failure warning module conducts real-time warning when failure occurs on the performance parameters according to a set threshold value of each performance parameter. By the adoption of the simulation model for evaluating the performance parameters of the vehicle power battery, through model research of the lithium ion battery, a method for further improving the performance of the battery and optimizing the charge-discharge process can be provided, and the battery model can also be embedded into an electric vehicle model system to conduct simulation research on a finished vehicle.
Owner:STATE GRID CORP OF CHINA +3

Target point, preparation and method for treating human ADSL deficiency

The present invention discloses target point, preparation and method for treating human ADSL deficiency. The present invention established an ADSL deficiency retrieval model in nematode through RNA interference technique, and found that the sole RNA interference with PAICS gene could increase the expression of ADSL gene. Based on the conclusion of nematode model study, it can be foreseen that through interference with PAICS gene expression in ADSL deficient patient, accumulation of SAICAR in patient body fluid will be decreased and thereby reducing damage to cells, achieving the object of treating human ADSL deficiency or relieving symptoms.
Owner:GENEHEAL BIOTECH

Deep learning-based load modeling and online correction method

The invention discloses a deep learning-based load modeling and online correction method, which includes: (1) clustering historical sample data and calculating a variable quantity; (2) constructing anoffline simulation sample and calculating a simulation output variable quantity; (3) calculating an association rule between input and output variable quantities and a load model parametric variationby using a deep learning network; and (4) acquiring online data and online correcting the model. Based on a conventional power system load model research, the method, by using the idea of offline learning and online application and based on the deep learning, solves the construction and online correction of a complex power system load model in the context of a smart grid. The method provides a feasible solution for the construction and online correction of the power system load model, further improves the accuracy and the calculation accuracy of power system simulation model under a complex condition, and provides new research ideas for subsequent power system load modeling research.
Owner:TIANJIN UNIV +1

Real-time Dynamic Forecasting System for Large-Scale Road Network Traffic Flow

The invention provides a large-scale road network traffic flow real-time dynamic prediction system, comprising traffic flow detectors, a data fusion module, a traffic flow parameter prediction module, a traffic flow prediction model study module, a traffic geographic information platform and a traffic flow state classified evaluation module, wherein the traffic flow detectors are used for collecting the traffic flow parameters of a plurality of road conditions; the data fusion module is used for fusing the traffic flow parameters; the traffic flow parameter prediction module is used for predicting the road conditions of the next time period according to historical data and fusion data; the traffic flow prediction model study module is used for comparing real-time detected traffic flow parameters and predicted information and adjusting a prediction model according to the comparison result; the traffic geographic information platform is used for displaying the current state and the predicted state of the road traffic flow; and the traffic flow state classified evaluation module is used for evaluating the current and predicted road conditions according to the traffic flow parameters and controlling the roads according to the evaluation result and the predicted information. According to the system provided by the embodiment of the invention, the road condition information is predicted through the real-time collected traffic flow parameters and the time-space relation of the road traffic flow, and the corresponding road segments or areas can be controlled according to the predicted information.
Owner:TSINGHUA UNIV +1

Method for establishing rice blade NDVI fitting model for representing rice growing states

The invention discloses a method for representing rice growing states based on an NDVI model. The method comprises the following steps that the highest temperatures and the lowest temperatures of rice bottoms, rice middles, rice canopies and a rice growing environment are acquired, and the highest relative humidities and the lowest relative humidities of the rice bottoms, the rice middles, the rice canopies and the rice growing environment are acquired; a rice blade NDVI is acquired; a rice canopy NDVI is acquired; the sunshine hours of rice blades and the number of rice growing days are acquired; the data is analyzed through a multivariate regression analysis method of SPSS software so that the NDVI fitting model for representing the rice growing states can be acquired. By means of the method, the growing states of the rice blade tillering stage, the rice blade jointing booting stage, the rice blade head sprouting postulation stage and the rice blade maturation stage can be accurately established, and a basis is established for model study for scientifically assessing the rice health condition.
Owner:SHENYANG AGRI UNIV

Method for evaluating disease recovery of patient suffering from depression based on diffusion tensor imaging

The invention discloses a method for evaluating disease recovery of a patient suffering from depression based on diffusion tensor imaging. The method comprises the following steps: establishing a brain structure network of a modeling sample; confirming a Rich club structure; establishing a Feeder-local sub-network; establishing a characteristic matrix; and through support vector regression, by taking an established characteristic matrix as a characteristic set, establishing an evaluation model through polynomial kernel functions. By adopting the method, the recovery process of a disease is evaluated according to objective iconography data, pure data driving is achieved, the disease recovery degree of a patient is judged completely on the basis of research on topology structure similarity models of Feeder-local sub-networks after layering of the Rich-club structure, doctors or patients do not need to join in the evaluation, and errors caused by objective factors are avoided.
Owner:SOUTHEAST UNIV

Tree shrew behavior sensitization model evaluation method and open field experiment device for evaluation

The invention discloses a tree shrew behavior sensitization model evaluation method and an open field experiment device for the evaluation, the method comprises the following steps of: inducing the tree shrew behavior sensitization by METH, detecting the tree shrew behavior science, the motion distance, the speed and the track by an open field experiment, measuring the weight change of the tree shrew and marking plate behaviors; the invention also discloses an open field experiment device for evaluating the tree shrew behavior sensitization model, which comprises a box body, a bottom plate replacement box, a moving chassis, a fixing bracket and a camera, wherein the bottom of the moving chassis is provided with universal wheel with a brake, the box body is fixed on the top of the bottom plate replacement box, the bottom plate replacement box is fixed on the moving chassis, an upright post of the fixing bracket is fixed on the moving chassis, and the camera is fixed on the fixing bracket. The device provides reference and guidance for the success of establishing the tree shrew behavior sensitization model, and is convenient for researching the addiction mechanism of lazy drugs by means of the tree shrew behavior sensitization model; the open field experiment device can conveniently replace the bottom plate after each batch of experiments are finished, thereby reducing the time for cleaning, scraping, assembling and other processes.
Owner:KUNMING MEDICAL UNIVERSITY

Methods and apparatus for double-integration orthogonal space tempering

The orthogonal space random walk (OSRW) algorithm is generalized to be the orthogonal space tempering (OST) method via the introduction of the orthogonal space sampling temperature. Moreover, a double-integration recursion method is developed to enable practically efficient and robust OST free energy calculations, and the algorithm is augmented by a novel θ-dynamics approach to realize both the uniform sampling of order parameter spaces and rigorous end point constraints. In the present work, the double-integration OST method is employed to perform alchemical free energy simulations, specifically to calculate the free energy difference between benzyl phosphonate and difluorobenzyl phosphonate in aqueous solution, to estimate the solvation free energy of the octanol molecule, and to predict the nontrivial Barnase-Barstar binding affinity change induced by the Barnase N58A mutation. As demonstrated in these model studies, the DI-OST method can robustly enable practically efficient free energy predictions, particularly when strongly coupled slow environmental transitions are involved.
Owner:FLORIDA STATE UNIV RES FOUND INC

An injector performance testing device

ActiveCN106089492BImprove the effect of medium atomizationImprove combustion stabilityRocket engine plantsCombustionWater flow
The invention provides a device for testing the performance of an injector. The device comprises a water inlet collector (1), multiple water inlet pipelines (2), an upper cover (3), a water inlet cavity (4), a lower cover (5) and a liquid collector (6). Inlets of the multiple water inlet pipelines are connected with an outlet of the water inlet collector. Outlets of the multiple water inlet pipelines lead to the water inlet cavity. The water inlet cavity (4) is formed around an inlet of a main fuel way at the lower end of the injector, and the upper cover is matched with the water inlet cavity to lead water into the inlet of the main fuel way. The liquid collector (6) is located in an outlet cavity of the injector and used for collecting flow of the main fuel way. The lower cover is located below the water inlet cavity and is matched with the water inlet cavity to achieve collection and measurement of the flow of a cooling way. By means of the device for testing the performance of the injector, due to the structural design of the device, it is ensured that water flows into a runner and flows out of the runner according to requirements, the flow of the runner is ensured, it is ensured that a test can be conducted smoothly, product test data are obtained, a basis is provided for model study, and therefore the medium atomization effect and the combustion stability of an engine are improved.
Owner:XIAN AEROSPACE PROPULSION INST

A Scale Model Based Impulse Withstand Voltage Test Method for UHV Converter Transformers

A scaled model-based UHV converter transformer impulse withstand voltage test method, according to the specific structure of the scaled model designed based on the scaled-down theory, conducts simulation research to obtain the distribution parameters of the scaled-down model windings, and determine the test waveform; according to the research needs , set the lead-out tap on the scaled model to obtain the required test waveform, and set related faults; make the actual equipment, use the scaled model to test, and adjust the parameters of the produced power equipment to obtain the required test waveform; Simplify the structure of the equipment and The test method is to obtain the winding voltage distribution waveform, and set the tap to set the corresponding fault for experimental research; through the analysis and research, the normal condition of the winding under the impulse voltage and the voltage distribution characteristics of the fault condition are obtained, and the UHV commutation is obtained by using the scaling relationship Transformer voltage distribution characteristics. The invention can simplify the test steps, reduce the test cost, shorten the test period, and can study the winding voltage distribution characteristics under different fault conditions.
Owner:STATE GRID CORP OF CHINA +1
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