37results about How to "Good theoretical basis" patented technology

The invention provides a news recommendation system and method based on an FOLFM model. Based on a content recommendation method, a news content model is expressed abstractly through a latent class model and content characteristics, and an individual latent class preference model is built for each user. Real-time training is carried out on a real-time behavior record of a user to obtain preference, on certain latent class news, of the user, whether the news is recommended to the user is determined through calculation, and a final news recommendation list is obtained after a series of processing processes. The news recommendation system and method based on the FOLFM model deeply excavate the interest of the user, improve recommendation accuracy and satisfaction of the user, avoid a cold starting problem of the news, and guarantee performance under the condition that the recommendation effect is improved as much as possible. The experiment shows that the news recommendation system and method based on the FOLFM model not only guarantee the requirements for high accuracy and high speed, but also realize visual real-time recommendation for the user.

The invention discloses a method for electronic image stabilization of a video on a mobile terminal. During a process of camera shooting of the mobile terminal, when a camera generates unconscious jitter due to interference, motion data of the camera is computed through data obtained by utilizing an attitude sensor in the mobile terminal, and the data is converted to obtain a motion vector of each frame of image, and after each frame of image is subjected to translation and rotation operations according to the motion vector, each frame of image is output and displayed, so that an effect of image stabilization is realized. The motion vector is directly obtained by the internal attitude sensor of the mobile terminal, so that a motion estimation link, which has larger cost and an error caused by error matching when the common electronic image stabilization obtains the motion vector, is eliminated, and thus the method has higher real-time performance and stronger anti-jamming capability.

The invention discloses a method and a device for evaluating and measuring the mesomechanics/micromechanics performance of a surface gradient metal material. The method comprises the following steps: establishing a finite element model for a nano-indentation test, and identifying the reliability of the model; evaluating the mesomechanics performance parameters of the surface gradient material based on a surface treatment process and a base material elastic modulus, and calculating the corresponding micromechanics performance parameters of the surface gradient material by virtue of the finite element model; performing dimensional analysis on an applied load and indentation contact depth based on a mathematical modeling method, and establishing a dimensionless equation; selecting the corresponding mesomechanics/micromechanics performance parameters which are evaluated and calculated according to the dimensionless equation, and establishing a dimensionless function relational expression; performing the nano-indentation test along different depth directions on the surface of a sample to obtain a load-displacement response curve, and reversing the mesomechanics performance parameters of the corresponding position of the material; establishing a mesomechanics performance gradient curve of the surface gradient material based on the determined mesomechanics performance parameters.

The invention belongs to the technical field of material initial damage evaluating, and relates to an evaluating method for material initial damage, and specifically relates to a method for evaluating and characterizing material texture and initial damage of processing technology by utilizing a smooth sample for developing fatigue tests and utilizing fracture quantitative retroestimation and data analysis. According to the method, by utilizing the smooth sample, the influence of structural details is eliminated, so that the sample is easy to process, and the defects of a material or the processing technology effect can be directly evaluated; and additionally, by utilizing the fracture quantitative retroestimation method to obtain data for evaluating material initial damage, a monitoring process of crack expansion is not needed, so that the test process is convenient and practicable, and the test period and cost can be obviously saved. The problems are solved that a conventional structural detail initial fatigue quality evaluating method which is directly utilized for evaluating material initial damage is large in error or even infeasible, and the estimation precision on the material initial damage is improved.

The invention relates to a device for comparing the test performance of the force measuring locking anchor pipes of a tunnel and a test method. The device is convenient to install and easy to operate. The device can be used for fast verifying the test performance of the force measuring locking anchor pipe with an optical fiber grating buried therein and can be applied to the detection of the test performance of force measuring devices such as tube type force measuring devices and rod type force measuring devices. According to the technical schemes of the invention, the device of the invention includes a force measuring locking anchor pipe with an optical fiber grating buried therein, a force measuring locking anchor pipe with resistance strain gauges pasted therein, a loading ring and a supporting frame, wherein the loading ring and the supporting frame are applied to comparison. The two kinds of force measuring locking anchor pipes are arranged on the supporting frame, so that step-by-step loading tests are carried out, and the measurement results of the tests of the force measuring locking anchor pipes are compared with theoretical values, and therefore, the test performance of the two kinds of the force measuring locking anchor pipes can be analyzed and evaluated.

The invention provides an attack and defense confrontation simulation system and method based on a system structure model, which can perform interactive simulation on multiple weapon systems and improve the reference of simulation deduction results, and belongs to the field of attack and defense confrontation simulation. According to the attack and defense confrontation simulation system and method provided by the invention, the system structure model is designed and operated by using a system structure design platform, the system structure model is used for defining function composition, interface relationship and operation logic of each weapon system under the combat service requirements; a combat scene is constructed by using an attack and defense confrontation deduction platform, a force model in the attack and defense confrontation is configured to the weapon system in the system structure model, the force model performs data interaction with the system structure model according to the constructed combat scene for deduction, and an event generated in the combat is output in the deduction process; and the system structure design platform judges the event generated in the combatby using the operation logic of the weapon system, and sends an obtained operation command to the force model of the attack and defense confrontation deduction platform.

The present invention relates to a cervical intraepithelial neoplasia model and the method of establishing model, which is characterized in that the cervical intraepithelial neoplasia tissue is embedded in the immunodeficiency mice to establish cervical intraepithelial neoplasia model. The method of establishing model is characterized in that the cervical intraepithelial neoplasia tissue is respectively taken from the biopsy under the vaginoscope and the tissues which are confirmed by the department of pathology and is inoculated subcutaneously in the back of the mice; the immunodeficiency mice of the present invention can overcome the xenoislet immune rejection reaction and receive the transplantation of the human tumor tissues, the tissue model after the transplantation has significant and stable character, short observation period and greater clinical reference significance of the experimental results. The present invention can explore the mechanism of the carcinogenesis of cervical carcinoma by outcome of the pathological process of CIN I, CIN II and CIN III animal models. Furthermore, by observing the period of the outcome of the cervical intraepithelial neoplasia tissue of the animal model, the present invention provides the feasible clinical animal experimental model for reversing the malignant transformation of the CIN I and CIN II lesion tissues.

Disclosed is a day scale primary productivity estimation method based on photoresponse segmentation characteristics. The method includes that (1) a primary productivity in a time period from sunrise to noon is calculated, then the primary productivity is multiplied by 2 to obtain a 'daytime' primary productivity, the primary productivity in the time period from sunrise to noon is divided into two sections, and time lengths corresponding to a first section of middle time t1 and a second section of middle time t2 are Dt1 and Dt2 respectively; (2) instantaneous temperature and radiation which are in daytime and correspond to the t1 and t2 are calculated by an air temperature and radiation diurnal variation formula; (3) an instantaneous photosynthetic rate which the t1 and the t2 correspond to is calculated by a photosynthetic rate model; and (4) the instantaneous photosynthetic rate is combined with the time lengths and a segmentation method is utilized to convert the instantaneous photosynthetic rate to the 'daytime' primary productivity. According to the day scale primary productivity estimation method based on the photoresponse segmentation characteristics, the time scale transformation from 'instant' to 'day' is performed, the 'day' scale primary productivity can be accurately estimated, and the calculating efficiency is greatly improved.

The invention relates to a video face recognition method based on wavelet transformation and a neural network algorithm, belongs to the technical field of face recognition, and is divided into a dataprocessing part and a face recognition part. According to the method, firstly, data processing is carried out, that is, denoising processing is carried out on a face image through wavelet transformation, then face image features are extracted through wavelet transformation, and then dimensionality reduction of feature data is achieved through a self-organizing neural network. When face recognitionis carried out, a BP neural network is trained by using part of sample data, and then the trained BP neural network is used to carry out face image recognition. According to the invention, on the premise of ensuring that the recognition accuracy is higher than 99.95%, the recognition speed on the mobile terminal is less than 80ms, so that the mobile terminal device has an accurate and rapid facerecognition function.

The invention relates to the technical field of combat capability intelligent argumentation, and provides a weapon equipment system evaluation method and device, wherein the method comprises the stepsof obtaining a combat service, and defining an expected combat capability architecture required by the combat service, wherein the expected combat capability architecture comprises a plurality of cooperative weapon systems; analyzing the expected weapon equipment combat capability corresponding to the expected battle capability architecture, and analyzing existing weapon equipment combat capability indicated by an existing weapon equipment system; and comparing the expected weapon equipment combat capability with the existing weapon equipment combat capability to evaluate the existing weaponequipment system. Therefore, a plurality of cooperative weapon systems are examined and evaluated from the overall capability architecture required by the operation business, and the accuracy of a planning demonstration result can be improved.

The invention discloses a Monte Carlo simulation analysis system and method based on a system architecture model, belongs to the field of tactical simulation. The system designs and constructs the system architecture model according to the business requirements of typical combat concepts, defines the system function composition, interface relation, trigger event and operation logic of each combatunit in the model, and carries out the dynamic simulation verification on the logic self-consistency of the model. Under the condition that the logic of the system architecture model is correct, the logic relationship between the system functions of each combat unit is set from the perspective of mathematical calculation, the logic relationship is mapped and implanted into the system architecturemodel for simulation, and quantitative indexes which should be achieved by the functions of the combat units under typical combat concepts are analyzed through Monte Carlo simulation. The combat rules, the tactical behaviors and the system operation are extracted and solidified, and are converted into an intelligent executable system data model, and a better theoretical basis is provided for top-layer argumentation of combat units.

The invention provides a method for measuring image global minimum perceived difference. In a model establishment stage, corresponding measurement images are generated according to characteristic parameters of each group of tested images, a corresponding noise intensity threshold value is obtained by using a staircase method, a visual characteristic model aiming at contrast masking is obtained, and a calculation model of the global minimum perceived difference is proposed. In a model application stage, the image global minimum perceived difference of any input gray level image is obtained through calculation by utilizing the calculation model of the global minimum perceived difference obtained in the model establishment stage. Measuring images generated through the method have larger MSEs and capacity of hiding noise, and the perception redundancy of human eyes can be exploited more effectively. The method for measuring the image global minimum perceived difference combines a contrast ratio masking effect and other masking effects, and results are more accurate.

The invention provides a method used for studying tight sandstone pore-throat structure dynamic change. The method comprises following steps: rock core is prepared; the porosity and the permeability of rock core is measured via gas measuring; the rock core is slabbed, and an obtained rock core column plug is subjected to constant-rate mercury injection experiment; the rest rock core is subjected to simulated formation water flow experiment, and constant pressure displacement of a certain pore volume is carried out; then the permeability of the rock core is measured again via gas measuring, and constant-rate mercury injection experiment of the rock core is carried out for a second time, so that pore distribution characteristics and pore throat distribution characteristics are obtained via the two times of constant-rate mercury injection experiment, and study on tight sandstone pore-throat structure dynamic change is completed. The method can be used for stimulating the pore-throat structure dynamic change of tight sandstone reservoir rock in long term waterflood development process, and studying the change of parameters of the dynamic change.

The invention discloses a preparation method of compound spenceria ramalana and an application thereof. The preparation method comprises the following steps of: (1) selecting spenceria ramalana, thalictrum delavayi, saussurea stella and rubus pungens as medicinal materials of anti-inflammatory antidiarrheal Tibetan veterinary drug compound spenceria ramalan, wherein the ratio is, by weight, 4:2:2:1, and crushing; (2) adding crushed medicinal materials to ethyl alcohol; extracting for 3 times, combining liquid supernatant of the 3 times of extraction; concentrating the liquid supernatant at 70DEG C under negative pressure; and obtaining concentrate of extract of general flavone of the anti-inflammatory antidiarrheal animal drug compound spenceria ramalan; and (3) purifying the concentrateby AB-8 macropore resin column for 1-5 times. The preparation method of the compound spenceria ramalana and the application thereof have the advantages of making full use of the advantages of Tibetanmedicine plant resources in northwestern Sichuan and other west areas, being capable of being widely used in prevention and treatment of diseases such as inflammatory diarrhea of yak and Tibetan sheep, and being good in therapeutic effect.

The invention discloses a detection method of length of a cast-in-place pile reinforcement cage based on electromagnetic field intensity testing. The detection method comprises the steps of 1) drilling a hole parallel to a cast-in-place pile beside the formed cast-in-place pile; 2) lowering a movable electrode of an integrated magnetic induction sensor to the hole parallel to the cast-in-place pile beside the formed cast-in-place pile at a constant speed through a cable of a cable collection disc; and 3) connecting the integrated magnetic induction sensor with an inverter power source and a computer, determining the magnetic induction intensity of the position through a test probe, and after data processing of the computer, judging the length of the reinforcement cage through the change of the magnetic induction intensity. According to the detection method, the hole parallel to the cast-in-place pile is drilled beside the formed cast-in-place pile, the test probe equipped with the movable electrode is utilized to apply high-voltage high-frequency alternating current generated by an inverter between the hole and the reinforcement cage, the test probe determines the magnetic induction intensity of the position, and the length of the reinforcement cage is judged through the change of the magnetic induction intensity.

The invention belongs to the technical field of urban underground comprehensive pipe gallery construction and management, and discloses a design and control method for an electric power prefabricated comprehensive pipe gallery in a soft soil foundation under traffic load. The design and control method for the electric prefabricated comprehensive pipe gallery in the soft soil foundation under the traffic load comprises the steps that the dynamic response characteristics of the prefabricated comprehensive pipe gallery in the soft soil foundation under the traffic load are determined; determining the energy transfer and deformation mechanism of the prefabricated pipe gallery system in the soft soil foundation under the traffic load; and determining an analysis theory and a calculation method of the underground comprehensive pipe gallery in the soft soil foundation under the traffic load. According to the invention, the power reaction and soft soil-pipe gallery power interaction of the prefabricated underground pipe gallery in the soft soil foundation under the traffic load are researched for the first time, and the stress deformation mechanism and the damage mode of the soft soil foundation pipe gallery structure under the traffic load are disclosed; the analysis theory of the prefabricated comprehensive pipe gallery structure is perfected, an analysis model, a calculation technology and a control method of the prefabricated comprehensive pipe gallery in the soft soil foundation under the traffic load are provided, and a theoretical basis is provided for pipe gallery design.

The invention discloses a frequency variable permeation device for broken rock water and sediment two-phase seepage and belongs to the technical field of a penetration test. The frequency variable permeation device for the broken rock water and sediment two-phase seepage comprises a permeameter and a pressure control device. A broken rock storage cavity is set in the permeameter. The broken rock storage cavity is equipped with at least one group of corresponding water and sediment storage cavity and filtering device. The water and sediment storage cavity is equipped with a pressure head and afirst liquid inlet pipe. The filtering device is equipped with a first liquid outlet pipe. The pressure control device comprises an upper cylinder and a lower cylinder. The lower cylinder is equippedwith a second liquid inlet pipe and a second liquid outlet pipe. The second liquid outlet pipe is connected with the first liquid inlet pipe. A stirring device is set in the lower cylinder. A piston is set above the stirring device. A piston rod is connected with a speed controller. According to the frequency variable permeation device for the broken rock water and sediment two-phase seepage, testaccuracy and stability are improved, speed is adjustable, axial loading is finished, and water pressure is uniformly distributed on a broken rock sample.

The invention belongs to the technical field of fingerprint comparison, and relates to a fingerprint comparison method and system based on deep learning, a readable medium and equipment, and the method comprises the following steps: S1, inputting a fingerprint image into a deep learning model for texture feature extraction, and storing the extracted texture features into a texture feature database; S2, inputting fingerprint images to be compared into the deep learning model for feature extraction, and extracting texture features, detail features and dictionary features; S3, inputting the textural features obtained in the step 2 into the textural feature database in the step S1, obtaining fingerprint images matched with the textural features, and generating a fingerprint image candidate list; and S4, comparing the detail features of the fingerprint images to be compared with the fingerprint images in the fingerprint image candidate list, and generating a fingerprint comparison result list in combination with the dictionary features. According to the invention, fingerprint features can be identified more quickly and accurately.