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57results about How to "Good uniqueness" patented technology

Remote and rapid monitoring and alarming device and method for displacement and gesture of sliding mass

The invention discloses a remote and rapid monitoring and alarming device and method for the displacement and the gesture of a sliding mass, and relates to a target monitoring technique. The method carries out remote automatic monitoring on the potential sliding mass in the earthquake and landslide disaster emergency rescue, and monitors the changes of the position and the gesture of the potential sliding mass, and once the changes reach or exceed the preset safety limit, the acousto-optic alarm is carried out to warn the field personnel to take safety measurements or depart from the danger area. The device has mature technique, lower cost, simple structure, low power consumption and higher accuracy, is convenient in operation, is convenient for outdoor monitoring, provides the insurance for natural disaster rescue, and generates enormous economic and social benefits.
Owner:吴立新 +2

Obstacle avoidance robot based on visual feature binding and reinforcement learning theory

The invention discloses an obstacle avoidance robot based on visual feature binding and a reinforcement learning theory. Visual feature binding and the reinforcement learning theory are utilized, and depth image information is integrated to learn priori knowledge of complex environment on the basis of a convolutional network and image matching technology; on the basis of a feature binding mechanism, a result is fed back to obstacle avoidance of the obstacle avoidance robot to make a decision intelligently, quickly, efficiently and accurately; an MNIST handwriting dataset is adopted, different control signal meanings are given to numbers 0-9 respectively, a Kinect sensor is utilized to collect RGB images with moving distance containing handwriting pictures in the complex environment, and an image matrix is created and output through gray-scale processing; image matching is performed, pictures after being matched are subjected to binarization processing and substituted into a well-trained image recognition model based on a convolutional neutral network, numbers in front of the sensor are judged finally, and corresponding control signals are transmitted to a robot control module through a host to realize intelligent obstacle avoidance.
Owner:CHINA UNIV OF MINING & TECH +2

Target tracking method with self-restoration capacity based on multi-stage detector

A target tracking method with self-restoration capacity based on a multi-stage detector includes the steps of selecting a plurality of detectors of different types to be connected in series in combination with the concept of cascading Adaboost multi-stage weak classifiers into a strong classifier, selecting a significance detector for first-stage detection, selecting a classifier assembly detecting module for second-stage detection, substituting the classifier assembly detecting module into a random tree to calculate the posterior probability of a positive sample in a probable area detected byfirst-stage detection, selecting a related filtering detector for third-stage detection, calculating the relevance between a sample with the posterior probability larger than a certain threshold andthe positive sample initialized or obtained in the last frame so as to reduce accumulated errors caused by long-term tracking, determining the position with the maximum relevance as the target area inthe current frame through the multi-stage detector, sampling the determined position, supplementing the positive and negative sample number of concentrated removed samples to ensure the reliability and number consistency of the samples, activating a redetection mechanism if the maximum value of the relevance is larger than a certain threshold, and detecting the area near the position again to search for a target.
Owner:BEIHANG UNIV

System and method for measuring three-dimensional volume scattering function of microparticle in water

The invention discloses a system for measuring a three-dimensional volume scattering function of a microparticles in water. The system comprises a parabolic spherical reflector, a sample pool, a telescope group, a photoelectric detector and a computing processing unit, wherein the sample pool is arranged in a reflector cavity of the parabolic spherical reflector, the center position of the sample pool is located in a parabolic spherical focal point of the reflector cavity of the parabolic spherical reflector, incident light is converged at the reflector cavity focal point position, incident to a parabolic spherical surface after being subjected to particle scattering in the sample pool, transformed into parallel scattered light, received by the photoelectric detector after passing through the telescope group, and transmitted to the computing processing unit for processing, and thus, the three-dimensional volume scattering function of the microparticle can be obtained. The invention further discloses a method for measurement by utilizing the system. According to the invention, the problem of detection deviation generated when a plurality of detectors are used for detecting the volume scattering functions of different angles is avoided, the acquired image is good in uniqueness and high in contrast ratio and can be completely fixed in a work process, and the measuring stability is good and the measuring speed is high.
Owner:HUAZHONG UNIV OF SCI & TECH

Titanium dioxide/boron nitride composite material and preparation method and application thereof

The invention relates to a titanium dioxide/boron nitride composite material and a preparation method and application thereof. The preparation method of the titanium dioxide/boron nitride composite material comprises the following steps that boric acid, a carbon source, nitric acid and urea are mixed to be even by using water, mixed liquid is obtained, the mixed liquid is heated to be 300-500 DEGC and subjected to heat preservation for 15-30 minutes, a precursor is obtained, the precursor is subjected to heat preservation for 2-5 hours under a condition of ammonia gas and at the temperature of 700-1000 DEG C, and boron nitride is prepared; and a titanium source and boron nitride prepared in the step (1) are mixed to be even by using an alcohol solvent, then a mixture is obtained, the mixture is subjected to heat preservation for 12-24 hours at the temperature of 150-180 DEG C, and the titanium dioxide/boron nitride composite material is prepared. The prepared boron nitride has a larger specific surface area and a smaller band gap. The prepared titanium dioxide/boron nitride composite material has good adsorption and photocatalytic effects on Rhodamine B, and can rapidly and completely remove Rhodamine B dyestuff.
Owner:UNIV OF SCI & TECH BEIJING

Current-mode PUF circuit based on reference current source

A current-mode PUF circuit based on a reference current source comprises an input register, the reference current source, a deviation current comparator and a timing controller. The input register is used for ensuring synchronization of the input challenges to avoid influences of asynchronous challenges on output responses. The reference current source generates a reference current for temperature and voltage compensation. A deviation current source array generates two paths of deviation currents under the control of the input challenges. The deviation current comparator generates and outputs a judgement according to the magnitude of the current provided by the deviation current source array. The timing controller is used for generating timing information for operation of the PUF circuit. The invention has the following advantages: the deviation current source array outputs deviation currents with high robustness and high reliability. Simulation results show that the PUF circuit of the invention has good uniqueness and high reliability of 99.6% when operating under difference temperatures (-40.about.120.degree. C.) and different voltages (1.08.about.1.32V).
Owner:NINGBO UNIV

License plate character recognition method based on SIFT operator and chaos genetic algorithm

The invention belongs to a license plate recognition system, and discloses a license plate character recognition method based on an SIFT operator and a chaos genetic algorithm. The method is characterized in that Chinese characters and alphanumeric characters of a license plate are separately recognized, that is, the Chinese characters are recognized by using an SIFT operator feature extraction and template matching method; and the alphanumeric characters are recognized by using a thirteen-point feature extraction method and a support vector machine, and the problem of low overall recognition rate of the license plate characters due to that most of the existing license plate recognition systems adopt a unified character feature extraction and recognition method for recognition is solved. Meanwhile, in order to improve the classification capability of the support vector machine, the method adopts the chaos genetic algorithm to optimize radial basis function parameters and penalty factors, license plate images of different backgrounds are collected and tested and simulated on matlab software, the overall recognition rate of the characters can reach more than 99%, and the chaos genetic algorithm has a higher character recognition rate and a faster convergence rate than a traditional genetic algorithm.
Owner:NORTHEAST DIANLI UNIVERSITY

Selenium-enriched compound microbial organic fertilizer with humic acid coating film and preparation method thereof

The invention discloses a selenium-enriched compound microbial organic fertilizer with a humic acid coating film and a preparation method thereof. The selenium-enriched compound microbial organic fertilizer is prepared by taking fowl manure and furfural residues as main raw materials which are used as carriers of a selenium element and various types of microbial strains, and taking active carbon fine powder, amino acid chelated selenium, a special bacterium agent for composting the organic fertilizer, a JT compound microbial bacterium agent and an EM compound microbial bacterium agent as auxiliary raw materials, and spraying a coating film on product particles by adopting a humic acid based film coating agent. The preparation method comprises the following steps: preparing the main raw materials, preparing the auxiliary raw materials, preparing various types of compound microbial bacterium agents, carrying out three times of biologic fermentation processes, and carrying out subsequent processing. The selenium-enriched organic fertilizer prepared by the invention can be widely used for producing selenium-enriched agricultural products, and the content of the selenium element in the agricultural products is effectively increased; recycling and harmless comprehensive utilization of excrement of large-scale bred livestock and poultry and biomass wastes of a furfural industry is realized, so that the environmental pollution is reduced, and the breeding cost and the production cost of the furfural industry are reduced; and the social and economic benefits of enterprises are improved, and the selenium-enriched compound microbial organic fertilizer has important demonstration and popularization values.
Owner:NINGXIA SHUNBAO MODERN AGRI CO LTD

Visual graphic symbol code authenticity checking method and device

The invention discloses a visual graphic symbol code authenticity checking method. The method comprises the following steps: obtaining passwords for checking visual graphic symbol code authenticity, wherein the passwords are passwords corresponding to a visual graphic symbol code for identifying an object; sending the passwords to a server; and receiving the visual graphic symbol code fed back by the server according to the passwords to check the authenticity of the visual graphic symbol code for identifying the object, wherein the visual graphic symbol code for identifying the object locates on the object, the generation process of the visual graphic symbol code is characterized by enabling relevant information of the object to be generated into the passwords and enabling the passwords to be generated into the PDF visual graphic symbol code, and the visual graphic symbol code is formed by graphic elements. The invention also discloses a visual graphic symbol code authenticity checking device. Through the mode above, the authenticity can be identified visually, and an anti-counterfeit effect can be improved.
Owner:李秀江

Cervical cancer therapeutic vaccine based on recombinant attenuating sheep listeria ivanovii

ActiveCN108939064ABreak immune toleranceMake up for the disadvantage of lower immunogenicityBacteriaViral antigen ingredientsAbnormal tissue growthListeria floridensis
The invention relates to a cervical cancer therapeutic vaccine based on recombinant attenuating sheep listeria ivanovii. By taking the attenuating sheep listeria ivanovii as a vector, specific immuneresponse in a tumor microenvironment is improved effectively and immune tolerance of a body is broken by means of a unique characteristic that the listeria ivanovii can grow in a main phagocyte and isa natural T cell immune activation adjuvant, so that continuous virus infection of the body is eliminated and the good therapeutic effect of eliminating the focus and inhibiting tumor development isachieved. The vaccine has the advantages that the defect that nucleic acid and protein polypeptide vaccines are relatively low in immunogenicity is made up, and the attenuating sheep listeria ivanoviialso has high safety while retaining the characteristic that an original strain can grow in cells to achieve antigen presentation.
Owner:南京颂悦生物科技有限公司

Physical unclonable function circuit for CMOS dynamic visual image sensor

The invention provides a physical unclonable function circuit for a CMOS dynamic visual image sensor. The physical unclonable function circuit comprises an external excitation source, a column decoder, a row decoder, a 16 * 16 pixel circuit array, a column selection output circuit and a reading circuit. The pixel circuit array comprises 256 pixel circuits in total, and the pixel circuit array is responsible for generating 256 output voltages Vo1; row selection signals output by the row decoder are used for carrying out row selection on pixel circuits in an array, the column decoder is used forcarrying out column selection on the column selection output circuit, and the reading circuit is used for calculating a difference value of Vo1 of two pixels selected front and back and quantizing the difference value to serve as response output of a PUF. According to the pixel circuit, the logarithmic converter in the array is extremely insensitive to fluctuation of power supply voltage, the reliability of PUF to the power supply voltage is greatly improved, unstable output response bits can be identified and filtered out through a threshold method, and therefore the reliability, especiallythe reliability to the temperature, can be further improved.
Owner:SHENZHEN UNIV

Gold curling smoke incense and preparation method thereof

The invention provides gold curling smoke incense and a preparation method thereof. The gold curling smoke incense is composed of 45-50% of cedarwood powder, 35-40% of sticky powder, 1.5-3% of natural plant gold powder, 11.5-14% of sodium silicate and 0.05-4.5% of a combustion improver. The preparation method of the gold curling smoke incense comprises the following steps of (1) drying cedarwood, grinding for 1-1.5 hours in a grinding machine, and screening with 50-300 mesh sieve after the cedarwood is grinded to obtain the cedarwood powder; (2) mixing the prepared cedarwood powder with the natural plant gold powder and the combustion improver uniformly according to the above proportions of the materials under stirring to obtain gold curling smoke incense perfume powder; (3) dipping incense sticks in water to coat incense sticks by viscous sticky powder; and (4) immersing the incense sticks in water again, wherein water makes the wood sticky powder to produce viscosity so as to stick the perfume powder, and coating the incense sticks by the sticky powder and gold curling smoke incense perfume powder layer by layer.
Owner:FUJIAN JINFENG INCENSE

Grass-scent lactating cow feed flavoring agent containing sweetening agent and preparation method and application thereof

The invention discloses a grass-scent lactating cow feed flavoring agent containing a sweetening agent and a preparation method and application thereof. The grass-scent lactating cow feed flavoring agent is prepared from, by weight, 1-10 parts of sweetening agent and 1-10 parts of flavoring additive. The sweetening agent is formed by mixing vanillin, ethyl maltol (fragrant and sweet type), saccharin sodium salt and glucose by weight. The flavoring additive is prepared from grass powder essence and edible powder essence. The flavoring agent is very beneficial for improvement of animal welfare, the milk yield and milk quality; the flavoring additive is used, the use amount of unconventional feed and the specialty of feed commodities can be improved, feed cost can be reduced, the comprehensive utilization range of agricultural and sideline products can be widened, the comprehensive utilization degree of agricultural and sideline products can be increased, and people and livestock grain fighting contradiction can be relieved.
Owner:天津北方食品有限公司

Complex of helical chain polysaccharide derivative co-loaded single-walled carbon nanotube and nucleic acid as well as preparation method and application of complex

The invention belongs to the technical field of biomedical materials, and discloses a complex of a helical chain polysaccharide derivative co-loaded single-walled carbon nanotube and nucleic acid as well as a preparation method and application of the complex. The preparation method of the complex comprises the following steps: enabling helical chain polysaccharide amylase to react with N, N'-carbonyldimidazole and ethylenediamine in dimethyl sulfoxide to obtain a water-soluble amylase derivative containing primary amino groups, then adding a single-walled carbon nanotube into an aqueous solution, and performing ultrasonic treatment, centrifugation, filtration and freeze drying to obtain an amylase derivative-single-walled carbon nanotube inclusion compound; and then, scattering the inclusion compound into double distilled water, adding nucleic acid, fully vibrating, and then performing incubation to obtain a complex of the helical chain polysaccharide derivative co-loaded single-walled carbon nanotube and nucleic acid. The complex disclosed by the invention combines photo-thermal conversion effects of the inclusion compound and special functions of nucleic acid, and can be used for preparing medicines for photo-thermal and gene combined treatment.
Owner:GUANGZHOU REFORGENE MEDICINE CO LTD
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