31results about How to "Overcome randomness" patented technology

The invention relates to an automatic evaluation and diagnosis method of text reading level for an oral test, which comprises the following steps: extracting voice characteristics when a tester reads the given text; training the reading characteristics, and establishing a pseudo-scoring model of artificial scoring; and in the testing process, fitting the machine scoring according to the reading characteristics and the pseudo-scoring model, and giving related diagnosis information. The tester is asked for reading the given text, thereby automatically evaluating the oral ability of the tester according to the acquired voice. The invention is characterized by using a computer to extract the voice characteristics when the tester reads the text and fitting and acquiring the machine scoring on the pseudo-scoring model, thereby achieving the purpose of evaluating the oral language ability of the tester.

Methods, and apparatus for carrying out the methods, are disclosed for synchronizing a plurality of RF transmitters that are supplied with a common digital information signal for carrier modulation and subsequent transmission on a common channel throughout a prescribed region, whereby the digital signal receivers within the region may receive transmissions on the channel from more than one transmitter. The method involves inserting reference signals into the data sent to the transmitters in order to place them into known states at specific times relative to the digital signals sent to them for transmission. As a result of this method, the digital signals transmitted by each of the transmitters will be identical to one another so that the receivers will be able to identify one received signal as the main signal and the others as echoes. If necessary, the signal transmitted by at least one of the synchronized transmitters may be delayed, such that identical digital signals received from at least two of the transmitters by receivers in the region will arrive at each receiver within a prescribed time window. The methods and apparatus also can be applied to one or a plurality of RF transmitters for purposes of synchronizing processes at the source of the signals and at the transmitters.

The invention provides a feed for the economic insect barley worm, its preparation method and application. The feed includes 85-90% of the main material and 10-15% of the auxiliary material in terms of mass percentage; the main material is a mixture of wheat bran, corn flour and soybean powder mixed in an appropriate mass ratio; the auxiliary material It is a mixture of glucose, fish meal, salt, feed multivitamins and cholesterol according to the appropriate and accurate mass ratio. When using the feed described in the present invention to feed barley worms, the digestibility, nutrient conversion rate, and feed utilization rate of the feed are significantly improved, and the feed formula is suitable for raising barley worms in different stages such as larvae, adults, and adults in the oviposition period. Low cost, no pollution to the environment, no residue, green and efficient.

The present invention discloses a kind of electric de-dusting technology assessing system for coal burning power plant. Electric de-dusting technological scheme is assessed by means of comprehensive fuzzy assessing model, the experiment data and the integrated expertise, its specific dust collecting area under certain work condition and its de-dust efficiency is predicted and effective de-dust speed is calculated. The assessing system may be used in determining the electric de-dusting scheme for coal burning power plant accurately, quickly and conveniently.

The invention provides a method of acquiring a cantilever-type probe system maintenance period. The method comprises the following steps of acquiring a minimum value L of a distance between a needle mark edge of a probe on a chip and a base pin edge of the chip of a cantilever-type probe system during a wafer test process and setting a distance value L0 of the needle mark edge and the base pin edge of the chip when the cantilever-type probe system needs maintenance; acquiring time T consumed when the distance between the needle mark edge and the base pin edge of the chip reduces 1micrometre during the wafer test process; according to the acquired L and T, calculating and acquiring a maintenance period T0 of the cantilever-type probe system, wherein the maintenance period T0 satisfies the following equation: T0=(L-L0)*T. By using the method of acquiring the cantilever-type probe system maintenance period, problems that the maintenance period of the cantilever-type probe system during a usage process can not be scientifically and reasonably pre-estimated, and maintenance in advance and early warning can not be performed during the wafer test process of an integrated circuit are solved.

The invention relates to the technical field of solid phase synthesis of silicon carbide micro-powder and especially relates to a synthesis method of beta-SiC micro-powder and whiskers. The synthesis method of the beta-SiC micro-powder and whiskers utilizes crushed and uniformly mixed carbon and silicon raw materials as reaction raw materials and is characterized by comprising the following steps of filling the reaction raw materials into a vacuum resistance furnace, closing the vacuum resistance furnace, carrying out vacuum-pumping on the vacuum resistance furnace so that the pressure in the vacuum resistance furnace is below 100Pa, supplying power to the vacuum resistance furnace to heat it to a temperature of 1400-1500K, carrying out heat preservation, stopping the power supply when the pressure in the vacuum resistance furnace is below 10Pa for more than 60min, and carrying out natural cooling to obtain the product. The synthesis method realizes accurate control of beta-SiC micro-powder and whisker synthesis conditions, has a simple process and a low production cost, and can realize industrial synthesis of the beta-SiC micro-powder and whiskers. The beta-SiC micro-powder and whiskers obtained by the synthesis method has high integrity, high purity and good quality.

The intelligent cerebrospinal fluid replacing instrument consists of two parts, including a disposable replacing cylinder and a driving and controlling device capable of being reused. Inside the replacing cylinder with replacing port for the drainage pipe to be connected on and sucker, artificial cerebrospinal fluid is held. The driving and controlling device includes mainly a mechanical driving unit and an automatic control unit. The present invention has a program driven pushing and sucking pump with constant speed and constant displacement, and parameters capable of being set based on disease condition, so that it has intelligently controlled speed, time and pushing and sucking amount of the replaced cerebrospinal fluid and is scientific, accurate, safe and efficient.

The invention relates to a Taq DNA (deoxyribonucleic acid) polymerase cold start activity detection method which comprises the following steps: designing primers and a false template according to a template, mixing the forward primer or reverse primer which is complementary withthe 5'terminal part of the false template, and carrying out denaturalizing annealing reaction to obtain the mixture;Adding the mixture and various constituents required by the PCR reaction, including template DNA, 5'terminal part, forward primer or reverse primer which is not complementary with the false template, PCR buffer, magnesium chloride, dNTP (deoxyribonucleotide triphosphate) mixture and Taq DNA polymerase to be measured, into a PCR tube to carry out PCR reaction; and judging whether the detected DNA polymerase has cold start activity according to the detection result of the PCR product. The method is simple to operate, has the characteristic of sensitivity, can effectively detect very weak cold start activity, and overcomes the defects of subjectivity and arbitrariness in the existing method.

The invention relates to a grassland ecological carrying capacity quantification method based on structural dynamics. According to the method, the principle of the structural dynamics is mainly utilized to carry out grassland ecological carrying capacity research, the mass, damping, rigidity and load in a structural dynamic equation are subjected to physical meaning analogy to express grassland mass, grassland potential, grassland restoring force and grassland pressure respectively, and therefore quantification of the grassland ecological carrying capacity is realized; on the basis of index system construction, standardized processing, external pressure action displacement calculation, grassland loading capacity calculation and other processes, the grassland ecological carrying capacity is quantitatively expressed into a specific value of grassland loading capacity and external pressure action displacement, namely the loading capacity of unit displacement. The method is applied to grassland ecological carrying capacity measurement, dynamic process monitoring, scenario estimation and impact factor identification and can also be applied to quantitative measurement of the carrying capacity of resources, environment and socioeconomic systems to provide guidance for carrying capacity improvement and sustainable development decision making.

The invention belongs to the technical field of flotation foam industrial and mining identification, and in particular relates to a flotation foam working condition identification method based on a double-tree complex wavelet domain co-occurrence augmentation matrix. The method includes performing dual-tree complex wavelet transform on the image to extract the high and low frequency subgraphs of the image; calculating the gray level co-occurrence augmented matrix of each subgraph based on the dual-tree complex wavelet transform; calculating the eigenvalues ​​of each augmented matrix; Industrial and mining identification model; the eigenvalues ​​of the augmented matrix are used as input feature vectors of the flotation industrial and mining identification model for identification of flotation working conditions. The invention can accurately and quickly realize the working condition recognition of the flotation foam image, avoid the subjectivity and arbitrariness of manual observation, provide the possibility for the optimization control of flotation production, ensure the economic benefits and production efficiency of the enterprise, and ensure the Sustainable development of mineral resources.

The invention relates to an automatic evaluation and diagnosis method of text reading level for an oral test, which comprises the following steps: extracting voice characteristics when a tester reads the given text; training the reading characteristics, and establishing a pseudo-scoring model of artificial scoring; and in the testing process, fitting the machine scoring according to the reading characteristics and the pseudo-scoring model, and giving related diagnosis information. The tester is asked for reading the given text, thereby automatically evaluating the oral ability of the tester according to the acquired voice. The invention is characterized by using a computer to extract the voice characteristics when the tester reads the text and fitting and acquiring the machine scoring on the pseudo-scoring model, thereby achieving the purpose of evaluating the oral language ability of the tester.

The invention discloses a cigarette for detoxification, wherein, tobacco shreds are composed of tobacco and lotus leaves absorbing ingredients of a detoxification drug, and the tobacco accounts for 10 to 50 percent of the total mass of the tobacco shreds. The invention further discloses a preparation method of the cigarette for detoxification. The cigarette for detoxification of the invention canallow drug aerosol to be absorbed by the human inner mucosa in the ionic state with the help of a smoking mode of the cigarette by the people, thus having significant efficacy, rapid effectiveness and facilitating the fine adjustment and control of the dose of the psychotropic drug; furthermore, the preparation method is simple and easy to realize, thus having broad market prospect.

The invention relates to a food material management method and system of a refrigerator for blind persons. The food material management method comprises the steps that the variety of a target food material to be put into the refrigerator for the blind persons is recognized after a door body of the refrigerator for the blind persons is opened; according to the recognized variety of the target foodmaterial, a target storage area of the target food material is determined; a user is prompted to place the target food material into the determined target storage area. The food material management system comprises a recognition device, a data processing device and a prompting device, wherein the recognition device is arranged to recognize the variety of the target food material after the door body is opened, the data processing device is arranged to determine the target storage area according to the recognized variety of the target food material, and the prompting device is arranged to controllably send prompt information of storing the target food material into the target storage area. The randomness and blindness of storing food materials by blind users are overcome, the blind users canclassify and store the food materials so that the blind users can quickly select the food materials, and then the blind users can normally and conveniently use the refrigerator for the blind persons.