204 results about "Research based" patented technology

The invention relates to a magnetic-field dynamic compensation system and methods based on spatial correlation, wherein the system can realize the dynamic compensation of environment magnetic fields at the directions of three axles through a large set and a small set of Helmholtz coil racks and two fluxgate meters based on the spatial correlation of a PID (Proportion Integration Differentiation) negative feedback electronic circuit and the fluctuation of the environment magnetic fields. The invention further discloses three methods using the system, including (1) a proportioning type magnetic-field dynamic compensation method, (2) a series type integral magnetic-field dynamic compensation method, and (3) a parallel integral type magnetic-field dynamic compensation method. The system of the invention is easy to construct, has low cost and simple operation, and can achieve excellent dynamic compensation effect, and simultaneously, the methods can maximally eliminate the affects of the fluxgate meters to other magnetic detectors at the centers of coils, and have great application prospect in extremely-low field nuclear magnetic resonance, imaging thereof and other biological magnetic researches based on an SQUID (Superconducting Quantum Interference Device).

The invention provides a fishing mail inspection method based on text characteristic analysis, which is characterized by comprising the following steps: eliminating non-text contents in mails; utilizing a mail analyzer to analyze the mails; utilizing a regular expression algorithm to extract sitelinks in the mails; utilizing the regular expression algorithm to extract relevant characteristics in the sitelinks again; and using a domain name to register for a search engine to obtain the site registration date characteristics. The extracted text characteristics are the characteristic vectors of the mails. A test proves that the method is used to improve precision and recall of the fishing mails as well as save time and overhead of program operation. In the method, original text characteristics are subjected to screening, so that a plurality of characteristics with preferable effects are selected. The plurality of characteristics with preferable effects are combined with the characteristics of the fishing mails and the current research base so as to provide several new text characteristics aiming at the inspection of the fishing mails. The method is utilized to inspect suspicious mails.

The invention discloses a parallel multichannel convolutional neural network and a construction method thereof, and an image characteristic extraction method and relates to the machine learning technology field. As depth sensors such as Kinect are widely applied, acquisition of a multi-mode image is made to be more convenient, so characteristic extraction research based on the multi-mode image information is of great importance. According to the method, a sub mode convolutional neural network model is established for each channel of the multi-mode image, and each mode depth characteristic vector is extracted; for acquiring multi-mode image characteristics having unified property, weight connection is established at a special full-connection layer by each mode sub network; in the full-connection portion of the multi-layer sub network, the multiple mode depth characteristic vectors are fused according to the weight ratio to form a fusion characteristic vector containing the information of each mode, and characteristic expression with lower dimensions and better expressive force can be acquired through multi-layer network training. The method is advantaged in that the characteristic expression can be applied to the identification and classification fields.

The invention discloses a volcanic material-enriched source rock organic carbon recovery method. The recovery method comprises the following steps: selecting a sample; determining content Z of volcanic materials in source rock; implementing source rock residual organic carbon analysis and kerogen treatment; dividing volcanic material-enriched source rock organic matter types through an element analysis method; calculating an organic carbon recovery coefficient Kc by combining numerical simulation with experiment; fitting related functions Kc=f(Z) of Kc and volcanic material content Z. The method disclosed by the invention, by recovering residual organic carbon of source rocks differing in volcanic material content, can greatly improve precision of recovering source rock organic carbon; meanwhile, on the basis of researching a research area test data recovery method, the reliability of resource quantity evaluation is improved; the technology fills the blank of volcanic materials in a complex sedimentary structure environment on organic matter abundance recovery, and enriches source rock evaluation theory; according to results, progress of next resource evaluation is greatly promoted.

The invention discloses a determining method of complex mountain-front effective source rock and a source rock structural model. The method includes the steps of implementing spatial distribution of potential source rock, restoring erosion thickness of different structural unit formations, restoring features of a paleo-geothermal field, determining hydrocarbon conversion type of the source rock by numerical simulation, and determining distribution of the complex mountain-front effective source rock according to the spatial distribution features of the source rock, the hydrocarbon conversion types of the source rocks at different positions of the different structural units and features of abundance of organic matters. Meanwhile, by means of the study based on the method of recovering hydrocarbon conversion of the source rocks in the study area, reliability of resource quantity evaluation is improved, the blank in determining the complex mountain-front effective source rocks is filled, and results help greatly boost the progress of next resource evaluation.

The invention discloses a method and device for constructing a biological information database. The method comprises the steps that according to a disease list, reference abstract resources related to a disease name are acquired from a network; each reference abstract is decomposed, so that abstract information containing abstract contents is acquired; gene and mutation information in the abstract contents is extracted and classified according to a gene list and a mutation regular expression semantic database, and classified results of each type are filtered and / or noted in combination with human genome reference sequences; a related word semantic database corresponding to the disease is established, and a gene mutation score is determined according to the related word semantic database; and data obtained at previous steps is arranged, and the biological information database is established. The method and device disclosed by the invention are characterized in that a biomedicine reference database is excavated by a text excavation algorithm, and mutation information and relations related to the disease are extracted from the database, so that the biological information database especially a human disease outbreak database which is based on research fronts, has comprehensive and reliable data and can be updated rapidly can be established.

The invention relates to atom laser cooling and atom laser capturing, in particular to a bi-color magneto-optical trap method and device for cooling and capturing atoms through lasers. According to the bi-color magneto-optical trap method and device, atom cooling and atom capturing are achieved through the bi-color lasers which work in a base-state, middle-excited-state and higher-excited-state cascading energy level, and atom pre-cooling is not needed. A step-type bi-color magneto-optical trap technology is adopted for the bi-color magneto-optical trap device, and the atoms can be directly cooled and captured from a vacuum air chamber. The step-type bi-color magneto-optical trap device can be used for cooling and capturing the alkali metal atoms, the alkaline earth metal atoms and even the rydberg atoms through the lasers; some quantum coherent effects can be directly researched in the cold atoms based on step-type bi-color dual-photon cooling, for example, the problem that correlation photon pairs are directly generated in bi-color magneto-optical traps is researched based on the rhombus-energy-level four-wave mixing effect; as for the experimental device, a bi-color magneto-optical trap experiment idea which is quite flexible and easy to achieve is initiated, and the experimental device can be conveniently applied and popularized.

The invention provides an electric power system operation and safety monitoring system. With the system adopted, electric power system safe operation simulation research under an electric power market environment can be carried out; experimental research and software testing of large-scale interconnected power grid safety and stability monitoring technologies can be carried out, such as dynamic safety analysis and assessment of extra / ultra-high-voltage large power grids, WAMS-based electric power system dynamic adjustment and control technologies, and dynamic safety analysis and assessment under the electric power market environment; and analysis and stability assessment can be performed on various kinds of typical operation modes of power grids, and hidden risks can be found as early as possible, and the safe and stable operation of the power grids can be ensured; and power grid accident replay and cause investigation can be carried out, and countermeasures can be researched based on dynamic safety assessment and early warning technologies.

Method / system for visualizing biological information. The system receives a user query relating to biological information and determines which database contains related biological information. A database query is sent to the database and the result indicates biological / chemical entities and relations. A network is created based on the result; biological / chemical entities are mapped to network nodes and relations to network connections. A distance matrix indicates a multi-dimensional distance for several pairs of network nodes. A dimensionality reduction function is adjusted based on a research context, to bias the search toward a relevant focus. The number of dimensions in the distance matrix is lowered by the dimensionality reduction function. Neighbours of a selected node are searched (2-18) based on the distance matrix to elucidate a biological role of the selected node. A re-created network is visualised (2-20) based on the adjusted dimensionality reduction function.

The invention discloses a numerical analysis method applied to a leaking and channeling mechanism and a prevention and control method of an injection fluid. The method is used for carrying out research based on the fluid-solid coupling theory by virtue of a method with combination of indoor test, numerical calculation and field detection. By virtue of the method, typical mudstone is selected for carrying out indoor test under different water ratios and building an inversion model of stress and deformation of a point-changeable stratum of an inversion sleeve of deformation data of a sleeve. On account of a typical injection-production scheme, the accurate positions of leakage, interzone and flowing along fault are judged and optimized by comparing the numerical simulation and the field detection; finally, a reasonable injection-production scheme and a reasonable measure for preventing serious loss of injection water are provided; and the method has important application values of improving the injection-production effect of the oil field and improving the final recovery rate and the whole development level of the oil field.

The invention discloses a method for estimating coverage based on NDVI and vegetation-soil moisture response of NDVI to TVDI response sensibility. The vegetation coverage comprises bare land coverage fcb, grassland coverage fcg and forest and shrub blended coverage fcf / s, wherein the fcf / s comprises the forest coverage fcforest and the shrub coverage fcshrub. The method comprises the following steps: determining the values of vegetation indexes NDVI and TVDI of a normalized difference value of each pixel in a research zone; determining the value of alpha of the value of NDVI of each pixel in the research zone to TVDI sensitivity; constructing a triangular scatter diagram of the research zone based on the values of alpha and the NDVI of each pixel in the research zone; determining the values of alpha and NDVI of the end member of each endpoint of a triangle based on the triangular scatter diagram; and carrying out linear resolution on each pixel in the research zone to obtain fcb, fcg and fcf / s of each pixel in the research zone by using a least square method, according to the values of alpha and NDVI of each determined end member at each endpoint of the triangle and under the constraint condition that fcb is not less than 0 and is not greater than 1, fcg is not less than 0 and is not greater than 1 and fcf / s is not less than 0 and is not greater than 1.

The invention relates to a fault interpretation processing method by slicing along structural trend surface and belongs to the technical field of seismic data processing. The method is characterized by, according to development characteristics of stratums in different areas, carrying out slice research based on stratum development rules; through carrying out horizon grid interpretation on a target stratum in the seismic data, determining time range of the target stratum to obtain structural trend of the stratum; and carrying out slicing along the structural trend surface of the stratum in the three-dimensional seismic data, and the obtained slice can truly reflect the fault formation shape and trend in the period, so that the purpose of fault interpretation is achieved. The method overcomes the defects that conventional slices cannot truly reflect the fault system distribution along the structure trend, so that the influence of man-made factors on horizon slice result is prevented; minor fault is effectively identified, especially the interlayer minor fault; seismic interpretation is allowed to be more reasonable; reliable basis is provided for fault system combination; minor fault block entrapment is realized precisely; and the method provides basis for the oil field exploration and development and well deployment.

The invention discloses an ideal temperature control curve model of a concrete dam. A finite element simulation analysis method is utilized, the distribution rule of the various dam types of temperature field and thermal stress is researched based on the existing specifications and temperature control practical experience, and the ideal temperature control curve model of concrete which is poured in different portions, different material partitions and different seasons is obtained through simulation calculation, wherein the temperature stress of the ideal temperature control curve model is minimum under the condition of the same temperature control standard. In addition, the invention also provides an intelligent control method utilizing the ideal temperature control curve model of the concrete dam.

The invention belongs to the technical field of food detection, and particularly relates to whey protein content predication models based on a cow milk dielectric property and an establishment method thereof. In order to overcome the disadvantages of a traditional whey protein content measuring method and lay a foundation for development of a quick, efficient, accurate and online milk quality detection instrument, the mutual relation of the cow milk whey protein content and dielectric parameters (namely relative dielectric constant and dielectric lose factor) of milk whey protein is researched based on the cow milk radio frequency / microwave dielectric property, and the cow milk whey protein content predication models are established on the basis of the mutual relation. The two whey protein content predication models based on the cow milk dielectric property are provided, and the establishment method of the models is given. Verification results show that determination coefficients of the two models reach to 0.998 and 0.997 respectively. The new method is provided for related instrument development, and has the characteristics of high speed, high efficiency, accuracy and online measurement.

The invention discloses an automatic magnetic field compensation device. The automatic magnetic field compensation device comprises a first magnetic reluctance chip, a second magnetic reluctance chip, a third magnetic reluctance chip and a fourth magnetic reluctance chip which are used for measuring the magnetic field value in an outside environment and further comprises a fixing unit, a support unit, a collection unit, a feedback unit and a rotation unit as well as three-dimensional Helmholtz coils, three-dimensional one-order gradient coil and a two-order gradient coil unit which are used for shimming. The invention further discloses an automatic magnetic field compensation method. The magnetic field compensation range is large, the device is simple in structure and convenient to operate, and the device and method are applicable to physical field research based on low-magnetic-field environment signal detection and atom magnetometer and have great significance.

The invention discloses an improved finite set model prediction control method suitable for an inverter. According to the method, the AC bias of current is eliminated by predicting the ripple of the output current and introducing the feedforward link of the current ripple on the basis of finite set model prediction control so that the total harmonic content of the grid-connected inverter output current can be reduced and the quality of electric energy conversion can be effectively enhanced. The improved finite set model prediction control algorithm having universality is researched based on the full-bridge L-type grid-connected inverter so that the total harmonic content of the output current can be effectively reduced on the basis of finite set model prediction control of the single-phase grid-connected inverter. The method can be greatly suitable for application of various finite set model prediction control algorithms on the inverter.

The invention discloses web page text classification algorithm research based on web page link analysis and a support vector machine and relates to the technical field of web page classification. The method includes the specific steps that 1, a large number of web pages are divided into a training set and a test set; 2, the web pages (including the training set and the test set) are preprocessed; 3, the word frequencies of feature words in each web page in the training set are calculated; 4, the weights of the feature words in each web page in the training set are calculated; 5, feature vectors of each class in the test set are calculated; 6, text feature vectors of each web page in the training set are calculated; 7, the minimum similarity value is determined as the threshold value; 8, the number of the feature words is reduced to the maximum degree; 9, text feature vectors of the web pages in the test set are classified; 10, the similarity between the classified web pages and the feature vectors is calculated and tested at the same time. A method in which a space vector model and the support vector machine is adopted is used, and the web page text classification algorithm research has the advantages of being short in classification time, high in recall rate, low in memory requirement and high in learning rate.

The invention relates to a method for selecting schemes for power restoration of an active power distribution network based on the improved genetic algorithm. According to the method, interconnection switches and various DG resources are overall considered, and a comprehensive decision is made on power restoration of the active power distribution network; DG equivalence is carried out on standby interconnection circuits in the decision making process, true DGs integrated into the power distribution network are classified, the DGs, under VF control, with the frequency and voltage regulation capacity are designed as main power supplies, and the randomly-uncontrollable power supplies are designed as common DGs; then generalized islanding and power restoration of the power distribution network are researched based on the isolated island operation mode where master-slave control is adopted. In the processing of solving the issue through the genetic algorithm, gene coding is fully combined with physical characteristics of the active power distribution network, so that the solution space needing to be searched for is greatly reduced; besides, a non-feasible solution will not be produced in the intersection and mutation operation on the basis, so that the computation speed is effectively increased, and the demand for real-time power restoration is completely met.

The invention discloses a compound fertilizer special for drip irrigation of cucumber in a greenhouse, which comprises the following nutritive elements in each hm<-2>: 391.41 kg of N, 255.43 kg of P2O5, 416.91 kg of K2O, 65.25 kg of CaO, 46.50 kg of MgO, 26.46 kg of Fe, 17.60 kg of Mn, 9.70 kg of Cu, 6.46 kg of Zn, 3.00 kg of B and 1.50 kg of Mo. The compound fertilizer special for the drip irrigation of the cucumber in the greenhouse with high applicability is prepared by a physical method through field trails and verification research based on a nutrient preserving capability and a water requirement principle and a nutrient requirement principle of the cucumber.

The invention discloses a method for reconstructing a running track for a road vehicle based on multi-source data fusion. The method aims to comprehensively and accurately reproduce spatial and temporal distribution and an evolution principle of road traffic situation, thereby improving parameter estimation and prediction accuracy of the traffic situation and improving signal control efficiency. The method which is based on a variational theory of three-dimensional shock wave comprises the following steps of: firstly, estimating a slope of a forward-arc and a backward-arc by using fixed-pointdetector data to establish an initial road-space network diagram; secondly, estimating a curve of queueing propagation by combining floating vehicle data and signal timing data; finally, reconstructing a complete running track for the vehicles based on a shortest path algorithm under constraints of three dimensions including the floating vehicle track, a queueing boundary and the signal timing. According to the method for reconstructing the running track for the road vehicle based on multi-source data fusion, technical problems that the running track of the vehicle is difficult to accurately estimate under current congested situation, and higher permeability is required for current research based on sampling track data are solved.

The invention discloses a method, system and mobile terminal for searching massive amounts of video content. The method includes the following steps: segmenting videos into scenes, achieving feature extraction for all the scenes, and obtaining a feature space capable of fully reflecting the content of the scenes of the video, wherein the feature space will serve as a basis for accurately searching a huge number of videos. The feature extraction is composed of visual feature extraction of key frames and kinetic feature extraction of the scenes. Thus, visual information of the videos is fully utilized, precise searching of massive amounts of video data can be improved, and experience of a user can be improved. Characteristics of the huge number of videos are found, the method of key frame extraction is used, module optimization is conducted, the technical bottleneck that a video depends on a text tag for being searched is overcome, research based on video content searching is provided, new data representation and data models are introduced, and precise searching for the massive amounts of video data is achieved. The method, system and mobile terminal for searching the massive amounts of video content can process the massive amounts of video data, and meanwhile meet video application characteristics of precise searching performed by the user.

The invention belongs to the field of marine pollution risk assessment and monitoring, and particularly relates to a marine oil spill risk assessment method. The marine oil spill risk assessment method comprises the following steps of (1) risk source assessment; (2) risk diffusion calculation; (3) sensitivity analysis; and (4) oil spill risk division. The concrete operation of the step (2) is that a climate state marine oil spill risk diffusion model is established based on the marine environment, the hydrodynamic characteristics and the wind field variations of different seasons of the research marine area by using an oil particle drift diffusion simulation method, each oil spill risk source risk diffusion field is monthly calculated and the level of the oil spill risk is determined through superposition calculation. The climate state marine oil spill risk diffusion model is established so that the requirement of high-resolution calculation of the oil spill risk diffusion precision can be met, the calculation burden can also be saved and integrated oil spill risk calculation of the marine area level is enabled to be feasible.

The invention relates to a dynamic monitoring method for internal energy loss of a water turbine. The method decomposes the internal energy loss of the water turbine into four types: bulk loss, hydraulic loss of passageways, mechanical friction loss and impact loss and offers an expression of loss and a calibration method of corresponding loss coefficient; and then by defining the reduced parameters, the method converts the water head and flow rate in a water turbine model to the parameters of actual measurement in operation of a machine unit and further offers a method for calculating variousinternal energy losses inside the water turbine in real time by using the parameters of actual measurement in the machine unit. The method offers basis for the research based on internal energy lossproperty and the improvement of relevant problems in the operation of water turbines.

The invention relates to the research based on an urban road transport intelligent traffic light control system, and provides a system which comprises an image data acquisition circuit, a DSP (digital signal processing) analysis and processing system, an I / O (input / output) extension unit, a driving array and a signal light display unit. The functions such as image A / D (analog to digital) conversion, image analysis and processing, real-time image display and time sequence control are realized by adopting a DSP chip. By analyzing and processing video images, vehicles in different shapes, structures and colors are accurately identified, quantities of static vehicles on the left-turn road, the straight road, the right-turn road and the roadway of a crossroad or the occupied length of the static vehicles are identified instantaneously, and corresponding green light time duration is determined according to the quantities of vehicles on different lanes. A DSP technology is for the first time applied to the intelligent traffic light control field, control on traffic lights through a remote network and intersection single points is realized, the traffic signal light time control period can be regulated and controlled, and the system has positive practical significance in improving traffic capacity and reducing traffic accidents.

The invention provides a technical scheme of a fast-slow axis beam quality homogenizing device of a semiconductor laser. Based on the beam total reflection principle, the scheme comprises the following steps: using a rectangular prism spatial combination as a beam rotating component, using a cylindrical lens assembly as Y-direction collimation, and using two-pieces type cylindrical beam-shrinking mirror as an X-direction beam-shrinking component so as to shape the fast-slow axis light beam quality of the semiconductor laser in a homogenizing manner. Through the adoption of the device provided by the invention, the beam rotation is aberration-free, the beam forward direction cannot be changed, and a shaping system is simple in adjustment and easy to operate. A semiconductor laser high-brightness optical fiber coupling output light source researched based on the device can be applied to various fields such as pumping optical fiber lasers, medical treatment and industry processing.

The invention provides a low-lamp-position multi-dimensional road lighting system which comprises multiple dimensions of lighting components, including a backward lighting component, a forward lighting component, a transverse lighting component and a vertical lighting component. The lighting function, the photochromic range, the irradiation direction and the irradiation space of each lighting component are respectively independent and can be adjusted independently. According to the task nature, each component is provided with independently operating special light source and lamp installed at low position. The low-lamp-position multi-dimensional road lighting system respectively undertakes the tasks of road surface lighting, space lighting, complex weather lighting and guidance lighting tasks. In each task, the efficiency of the low-lamp-position multi-dimensional road lighting system is maximized, and the overall lighting reaches comprehensively optimal. The invention overcomes the defects of the traditional high-lamp-position lighting system and the traditional low-lamp-position lighting system, so that the light sources and the lamps with different purposes perform own duties, the problems of glare, ineffective lighting, poor longitudinal uniformity degree and the like are effectively solved, and the lighting efficiency is greatly improved. The low-lamp-position multi-dimensional road lighting system is autonomously applied and researched based on the characteristics of a small-power high-light-efficiency light source per se, the lighting system of the traditional projection lamp is radically discarded, and the mode of simply replacing the HPS (High Pressure Sodium) lamp with an LED lamp is also discarded.

The invention discloses a health care product for maintaining beauty and lengthening life. The health care product is a medicine prepared by the following medical raw materials according to parts by weight: 20 to 30 parts of gynostemma pentaphylla, 15 to 20 parts of angelica, 15 to 20 parts of old arable soil, 15 to 20 parts of hemlock parsley, 15 to 20 parts of medlar, 15 to 20 parts of ophiopogon root, 40 to 50 parts of radix astragali, 15 to 20 parts of atractlylis lancea formalyrata, 15 to 20 parts of semen nelumbinis, 30 to 40 parts of wild jujube, 10 to 15 parts of desertliving cistanche, 5 to 6 parts of aweto, 5 to 6 parts of liquorice and 10 to 15 parts of colla corii asini. The health care product is prepared by research based on health care and health preservation theory of the traditional Chinese medical science, the medical materials cooperate with one another to act, and the health care product has the advantages of balancing Yin and Yang, invigorating Qi and nourishing blood, replenishing essence and nourishing the kidney, nourishing yin and moisturizing the lung, strengthening the spleen and the stomach, removing speckle and maintaining beauty, and delaying senility, and can adjust the internal secretion, strengthen the immunity of a human body, replenish and nourish the human body, the viscera, the blood, the liver and the kidney, rejuvenate the deteriorative function of the human body, promote the recovery of health and nourish the source of essence, thereby enabling the human body to be vigorous, healthy and longevous.

The invention relates to a double-planar-array three-dimensional plotting system, in particular to a double-planar-array three-dimensional plotting system based on a minosatellite platform, and aims to solve the problems that a processing method of an existing plotting system is complicated, requirements for attitude stability of a satellite platform is high, data cannot be transmitted in real time, processing is inconvenient and the like. The plotting system comprises a house-keeping system, a measurement and control system, an attitude and orbit control system, a power supply system, a thermal control system, a first star sensor, a second star sensor, a data transmission system, a three-axis gyroscope, a foresight planar array camera, a rearview planar array camera and a foresight and rearview optical system in-orbit included angle detection system. The foresight planar array camera and the rearview planar array camera share an imaging and focusing controller; the foresight and rearview optical system in-orbit included angle detection system is used for detecting the changes of a foresight and rearview optical system in-orbit included angle in orbit in real time. The system develops a large-scale double-planar-array three-dimensional plotting research based on a minisatellite in combination with satellite-borne integration and low-orbit operation techniques, reduces the requirements for satellite attitude and orbit measurement accuracy and can realize plotting without the aid of control points.

The invention discloses a quantitative and divisional drill hole arrangement optimization method based on coal mine gas extraction production prediction. The quantitative and divisional drill hole arrangement optimization method comprises the following steps that a critical value of reaching the standard of mine gas extraction is determined; the relation between the effective extraction radius and the extraction time is obtained; according to the linkage deployment and roadway tunneling time and roadway stopping time of working face pumping-digging-extraction, the longest pre-pumping time and shortest pre-pumping time of working face extraction drill holes are determined; a quantitative and divisional drill hole arrangement optimization scheme is achieved according to an obtained result. The linkage balance problem of pumping, digging and extraction of coal seam gas to be pumped can be solved, the relation between the pre-pumping time and a drill hole separation distance is researched based on coal mine gas extraction production prediction, and meanwhile quantitative and divisional optimization of pumping and extraction drill hole arrangement parameters is achieved from the spatio-temporal perspective by combining with the mine pumping and extraction linkage relation.