66results about How to "Increase mutation rate" patented technology

The present invention provides an object sensor configured such that excitation coils (13c and 13d) and a detection coil (12) are separately disposed, and the detection is performed in accordance with the balance between the excitation coils (13c and 13d) in a pair, a residual variation amount after the impedance due to a DC resistance part and the like has been offset and removed is obtained at high sensitivity with excellent linearity while using a small core body (11), regardless of the impedance including a DC resistance part. Additionally, the object sensor to be used as an inlet sensor is located in an appropriate position on a more upstream side than the read / write position in an insertion direction of the IC card. A contact terminal portion of the IC card is sensed whereby to detect the validity of the card inserted into the apparatus from a card insertion slot. Thereby, steady detection operations can be implemented for the presence or absence of the IC card, notwithstanding environmental temperature variations. The invention further provides an IC card reader configured such that a plurality of inlet sensors for detecting the type of an inserted card is provided in appropriate positions more upstream than the read / write position in a card insertion direction, wherein when an unusable card or the like is inserted, a control operation of closing shutter means can be performed, thereby enabling illegal action with the card to be prevented.

The invention relates to a BP neural network image restoration algorithm and especially relates to the BP neural network image restoration algorithm based on a self-adaption genetic algorithm. The algorithm comprises the following steps: S1) population initialization; S2) design of a fitness function; S3) selection design; S4) cross-over design; S5) variation design; and S6) crossing-over rate and variation rate dynamic adjustment. The algorithm has smaller prediction error and more reliable stability, and enhances algorithm robustness.

The present invention provides a variable magnification optical system for forming an optical image of an object on the light-receiving surface of an image sensor with a variable magnification. The variable magnification optical system includes an optical construction comprising, from an object side, a first reflective surface, a first movable unit, a second reflective surface, and a second movable unit. The optical axis is bent at substantially ninety degrees by the first reflective surface and is further bent by the second reflective surface, and, during magnification variation from the wide-angle end to the telephoto end, the first and second reflective surfaces are kept in fixed positions with respect to the image surface, and the first and second movable units move along the optical axis. The variable magnification optical system fulfills a prescribed conditional formula.

The invention discloses a self-adaptive genetic algorithm based on the population evolution process, including the first step, setting the parameters of the BAGA algorithm, setting the number of iterations of the algorithm, the number of populations in each generation, the discrete precision of the independent variable, and the total number of shooting times , a constant; the second step is to use binary code to generate the initial population; the third step is to judge whether the maximum number of iterations is satisfied, and if so, output the optimal individual of the last generation, which is the optimal value found, otherwise turn to the fourth step; The fourth step is to establish the relationship between the objective function and the fitness function, and then calculate the fitness of each individual and the average fitness of contemporary individuals, save the individual with the largest contemporary fitness, and calculate the evolutionary degree of the contemporary population, the degree of population aggregation, and Balance factor, crossover probability and mutation probability; the fifth step, selection, crossover and mutation operations to generate new populations, the selection operator uses roulette technology, the crossover operation uses univariate crossover, and the mutation operation uses basic bit mutation; the sixth step, Find the best individual in the contemporary population, keep it, and then go to the second step.

A variable magnification optical system of the present invention for forming an optical image of an object on a light-receiving surface of an image sensor with variable magnification includes: from the object side, at least a first lens unit having a positive optical power, a second lens unit having a negative optical power, a third lens unit having a positive optical power, and a fourth lens unit having a positive optical power. The variable magnification is performed by movement of at least the first lens unit and the third lens unit. A bending optical element for bending an optical axis is provided between the second lens unit and the third lens unit. Moreover, prescribed conditional formulae are fulfilled.

A first side circuit connected to a primary coil of a transformer includes a main switching element driving the primary coil, and a control circuit which detects an output voltage to feedback and drives and controls the main switching element so as to keep constant the output voltage by acquiring a voltage induced in a tertiary coil of the transformer. A secondary side circuit of the transformer includes a dummy load circuit connected to the output terminal, a detection circuit which detects a secondary coil voltage of the transformer, and a dummy load control circuit which is controlled by the detection circuit and controls so as to flow current flow through the dummy load circuit only in a state of a light load.

The invention is directed to a tunable, capacitive component that includes a pair of MOS transistors whose gate connections are connected via a respective coupling capacitance to a pair of circuit nodes between which the tuned capacitance can be tapped off. The four load connections of the MOS transistors are connected to one another. In addition, a tuning input and a reference signal input are provided that are both coupled to the transistor pair. In this arrangement, the reference signal input is designed for setting the operating point of the transistors. The tunable capacitance has a large tuning range and also a low series resistance and permits good linearity properties on account of the operating point setting. The component can be used advantageously in LC oscillators.

The invention discloses a parallel genetic algorithm steam pipe system model auto-calibration system based on a TBB (threading building block) and belongs to the field of steam pipe system model calibration and calculation. A hardware system comprises a relational database server, a real-time database server, an application server and an engineer station, wherein the relational database server is connected with the engineer station and the application server; and the application server is also connected with the real-time database server and the engineer station, so that data exchange among the application server, the real-time database server and the engineer station is kept. An application module comprises a relational database, a data acquisition module, a data result display module, a hydraulic thermal coupling calculation module and a pipe system model auto-calibration module. The parallel genetic algorithm steam pipe system model auto-calibration system has the advantage that quick and accurate steam pipe system model calculation is realized. Therefore, pipe system model calculation is more accurate, and analysis and maintenance on a pipe system are more facilitated.

The invention belongs to the technical field of software testing, in particular to a software fuzzy testing method and device based on path record truncation. The method comprises the steps of building a project data set, extracting a condition code structure, obtaining model input data of a classification model of a low-frequency path transfer condition code structure, and carrying out model training, adding a path truncation mark and a mark inspection instruction in the fuzzy tester instrumentation code; and for a to-be-tested program, extracting a condition code structure, acquiring model input data, transmitting the model input data to the trained classification model, identifying a low-frequency path transfer condition code structure, performing source code level instrumentation at acorresponding position in a source file, performing path truncation according to the path truncation mark, and completing a fuzzy test. According to the method, the low-frequency path transfer condition code is identified before the program is executed, the high-frequency path sample test is cancelled by adopting the path truncation strategy, the fuzzy test efficiency and the coverage rate are improved, and the engineering application prospect is very strong.

The invention discloses a fuzzy test case selection method and a device, which are applicable to the selection of test cases to be mutated in the AFL process. When AFL method is used to select test cases to be mutated, the branch coverage of test cases is introduced to cover the prediction factor and path frequency to determine the scores of test cases, and the privileged test cases are determinedaccording to the scores. Privileged test cases are preferred as test cases to be mutated. The invention can reduce the waste of time and space and improve the fuzzy testing efficiency.

The invention discloses a mutation breeding method for cunninghamia lanceolata. The method comprises the following steps: especially adopting ripen seeds of a cunninghamia lanceolata seed garden; carrying out low-temperature overwintering treatment, carrying out constant-temperature seed soaking stimulation on a gibberellin solution with specific concentration, immediately putting the gibberellin solution subjected to constant-temperature seed soaking stimulation into clear water, carrying out variable-temperature soaking for 3 days, and carrying out sprout promoting treatment; respectively carrying out colchicine mutation treatment, ethylmethane sulfonate (EMS) mutation treatment and sodium azide (NaN3) mutation treatment; and finally seeding and germinating the cunninghamia lanceolata seeds which are subjected to mutation treatment, so as to obtain a large group of cunninghamia lanceolata mutation seedlings. The cunninghamia lanceolata mutation seedlings obtained by the mutation method have the characteristics of obvious phenotypic characteristic variation, large population growth characteristic variation range and the like; a great number of mutated cunninghamia lanceolata materials can be formed within a short period of time by the method disclosed by the invention; and a foundation is laid for breeding of a new variety of cunninghamia lanceolata.

The invention discloses a method for screening dandelion salt-tolerance mutants. The method comprises the steps that full seeds are selected and cultured; aseptic seedlings are acquired and cut into slices; the slices are subjected to callus induction; embryonic calluses are obtained, sequentially inoculated to a liquid differential medium containing EMS (Ethylmethane Sulfonate) and a solid differential medium containing NaCl, and screened; salt-tolerance test-tube seedlings are obtained; acclimatization and transplant are performed to make the salt-tolerance test-tube seedlings survive; then the salt-tolerance test-tube seedlings are transplanted a greenhouse; and salt-tolerance dandelion plants are obtained with the combination of coastal original saline alkali soil potting saline-alkaline tolerance identification method. The method for screening the dandelion salt-tolerance mutants is simple to operate, good in effect, high in efficiency, and very wide in application prospect, and accelerates a dandelion salt-tolerance breeding course.

The invention discloses a breeding method of grape clone varieties. The breeding method is characterized in that good disease-resistance early-maturing and high-quality grape single strains are obtained in a manual physical mutagenesis mode. The breeding method concretely comprises the steps of breeding target determination, full and mature seed collection, physical mutagenesis, ray irradiation by 60Co gamma rays with the dosage being 100 to 300Gy at the dosage rate being 10Gy / min, seed seeding, seedling culture for 3 to 6 years, single strain selection (observation selection through biological and botanical properties, economic characteristics and the like), mutation property gene analysis, good single strain region test, culture measure summarizing and popularization. The good single strains obtained by the method have the advantages of disease resistance, early mature, high quality and the like.

A switching system for a combustion engine ignition system comprises a switching device switchable between an accumulation condition and a transfer condition to activate an ignition element. The switching system comprises control logic that provides a control signal for controlling the switching device, measures a progress indicator indicative of progress in switching the switching device from the transfer condition to the accumulation condition, and causes the control signal to vary with a first variation rate during a first stage until the progress indicator reaches a first progress condition. The control logic causes the control signal to vary with a second variation rate, lower than the first variation rate, during a second stage until the progress indicator reaches a second progress condition, and causes the control signal to vary with a third variation rate, higher than the second variation rate, during a third stage of the preliminary switching.

A variable magnification optical system of the present invention for forming an optical image of an object on a light-receiving surface of an image sensor with variable magnification includes: from the object side, at least a first lens unit having a positive optical power, a second lens unit having a negative optical power, a third lens unit having a positive optical power, and a fourth lens unit having a positive optical power. The variable magnification is performed by movement of at least the first lens unit and the third lens unit. A bending optical element for bending an optical axis is provided between the second lens unit and the third lens unit. Moreover, prescribed conditional formulae are fulfilled.

A first side circuit connected to a primary coil of a transformer includes a main switching element driving the primary coil, and a control circuit which detects an output voltage to feedback and drives and controls the main switching element so as to keep constant the output voltage by acquiring a voltage induced in a tertiary coil of the transformer. A secondary side circuit of the transformer includes a dummy load circuit connected to the output terminal, a detection circuit which detects a secondary coil voltage of the transformer, and a dummy load control circuit which is controlled by the detection circuit and controls so as to flow current flow through the dummy load circuit only in a state of a light load.

A compressor component incorporated into a compressor having a compressor body and a compressor pulley mechanism transmitting a driving force to the compressor body has an austenite grain with a grain size number falling within a range exceeding 10, a fracture stress value of at least 2650 MPa, or a hydrogen content of at most 0.5 ppm. This provides a compressor component and a compressor bearing with a long fatigue life, a high anti-crack strength, and a reduced secular dimensional variation.

The invention discloses a breeding method of cabbages processed by cold plasma and application thereof. Early-maturing cabbage parental seeds are placed in an ion radio-frequency seed processing instrument and are processed at proper power, planting and screening are performed at proper time, the compatible index of self-incompatible lines is measured, and the duration period and the matching capacity of early-maturing materials are compared. According to breeding targets, the self-incompatible lines and the early-maturing materials are selected, the self-incompatible lines are identified and analyzed through the conventional breeding means of selfing, back-crossing, test crossing and the like and by means of molecule marked and isozyme marked self-incompatible genes, cabbage stable male and female parent materials are obtained through breeding, the male and female parent materials are crossbred and matched in a testing mode so that cabbage cross combinations can be obtained, and finally new excellent cabbage species are obtained through resistance identification experiments and variety comparison experiments. The cabbage breeding materials are processed at proper power-supply power, the self-compatible index of the self-incompatible lines can be reduced, the early-maturing performance of cabbages is promoted, the breeding period is shortened, and new extremely-early-maturing species good in comprehensive performance are cultivated.

The invention relates to methods for inducing 'Hort 16A' offspring superior plant variation by using EMS and AFLP detection, and relates to a kiwifruit breeding and identification method. According to the invention, the method for directly adding the EMS into a culture medium is adopted to induce kiwifruit, and the induction effect of the EMS with the concentration of 0.08 mg / L to an embryonic callus is relatively remarkable. In the AFLP, the influence of the enzyme use quantity, enzyme digestion time and enzyme activity required by PCR amplification to the enzyme digestion is researched; the influence of the enzyme activity and energy to primer connection is analyzed; appropriate primer combinations are screened out in a selective amplification system to be used as selective amplification primers after DNA pre-amplification, so that the selective amplification of polymorphic DNA is facilitated, and the reliability for reflecting the fragment length polymorphism of the polymorphic DNA is improved; therefore, the purpose of detecting the small difference of DNA levels of mutants generated through induction by one-time detection can be achieved.

The invention discloses a rapid breeding method for salt and alkali rice. The method specially comprises the steps that wild seawater rice is used as a radiation induced breeding material, the breeding material is cultured through seawater, rice sprouts are radiated through the solar energy focus point in three steps, sea mud culture is performed, protogene pyramiding is performed, and the superior and stable variety fast to breed is selected. By implementing the rapid breeding method, the wild seawater rice is used as the radiation induced breeding material due to the exceptional function, and seawater and sea mud are adopted for training plants to obtain comprehensive superior plants. By the adoption of a radiation method, the percentage of seedling emergency is low, the aberration rate is high, variation produced by radiation is large, stabilizing is fast, and a stable, good and important way is provided for breeding high-quality rice seeds; meanwhile, by implementing the rapid breeding method, the novel early-maturing, medium-maturing and late-maturing rice varieties which are resistant to saline and alkaline, extensive breeding and low temperature, high in stress resistance, suitable for direct seeding and good in rice quality are cultured. A new way is opened for developing saline and alkaline land, irrigating planted rice through seawater, and obtaining employment, increasing income and seeking for profits for more people.

The invention relates to a PID controller parameter optimization method based on a genetic algorithm and a motor. The two PID controllers are in cascade control; different control parameters are set;kp1, Ki1, Kd1, Kp2, Ki2 and Kd2 are subjected to binary coding and then are combined into a plurality of different individuals; and forming an initial population, determining the fitness of each individual in the initial population; corresponding individuals are selected according to the fitness to be subjected to copying, crossing and mutation operation in sequence; forming next generation populations, S2 and S3 are iteratively executed on the next generation of population; end of iterative process, and finally, taking the individual with the maximum fitness in the generated population as anoptimal solution individual. Kp1, Ki1, Kd1, Kp2, Ki2 and Kd2 of the optimal solution individuals serve as optimal control parameters, the optimal control parameters are used for controlling a controlled object, the optimization efficiency is high, the calculation precision is high, and after the method is applied to the motor, the torque and the speed of the motor can be quickly adjusted to the optimal state.

The invention discloses a breeding method of high-temperature-resistant cotton and provides a basis for breeding new materials and new varieties of high-temperature resistant cotton. According to themethod, firstly, a candidate parent material with high temperature resistance is screened out by training a basic material with high temperature resistance potential, and high-temperature training andsister hybridization are carried out on pollen of the candidate parent material; secondly, seeds obtained by sister hybridization are sowed in a high-temperature environment, the candidate parent material is screened out, a high-temperature potential parent material is established at the same time, and field pollen high-temperature training and screening of the high-temperature potential parent material under natural conditions are carried out; thirdly, material-to-material or plant-to-plant hybridization is conducted on the screened parent material with high-temperature resistance potentialin a high-temperature environment to obtain a specific high-temperature-resistant hybrid material, and further the specific high-temperature-resistant hybrid material is screened to obtain the high-temperature-resistant cotton parent material. The breeding target of the method is clear and definite, the pertinence is strong, the directional selection is clear and definite, meanwhile, the cost is reduced, and the time is saved.

The invention provides a method for high-efficiency multiplication of test-tube tomato seedlings and belongs to the technical field of plant tissue culture. The method comprises the following steps of: treatment of a mother bottle of the test-tube tomato seedlings, addition of a liquid medium, germination and culture of axillary buds and culture of new test-tube seedlings. The method provided by the invention has the beneficial effects that the germination of the axillary buds of the obtained test-tube tomato seedlings can be obviously accelerated, the seedling formation time of the tomato bud seedlings can be shortened, a large amount of test-tube tomato seedlings can be rapidly obtained in a shorter time, the obtained test-tube tomato seedlings have the advantages of strong growing power and high quality, the subculturing times of the test-tube tomato seedlings can be reduced, and the increase of the mutation ratio of the test-tube tomato seedlings can be delayed, so that technical support is provided for large-scale production of the tomato seedlings by utilizing a plant-tissue culture technology.

The present invention provides a novel in vitro prediction system of a phospholipidosis inducing potential of a novel drug-caused phospholipidosis marker gene and a drug. Specifically, the invention provides a reagent for prediction of a phospholipidosis inducing potential of a compound containing a nucleic acid capable of detecting the expression of a gene having the same or substantially the same base sequence as the base sequence shown in SEQ ID NO:1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21 or 23. Furthermore, the invention provides a method for predicting a phospholipidosis inducing potential of a compound, which includes detecting the expression of two or more genes showing expression variation in correlation with phospholipidosis expression in a mammalian cell exposed to a test compound.

The invention discloses a method for preparing a high-oleic oilseed rape material by utilizing artificially synthesized brassica napus. The method comprises the steps of utilizing the artificially synthesized brassica napus for hybridizing with natural brassica napus, obtaining a great deal of variations through mass exchange and recombination among filial generation chromosomes, and deficiency, insertion, transposition and inactivation of gene sequences, preventing brassica napus oleic acid synthesis from transforming to linoleic acid and linolenic acid, and utilizing mutation accumulation to acquire a high oleic acid material. According to the method provided by the invention, in earlier generation, oleic acid characteristics have no need to be selected, so that the breeding period can be shortened through a generation-adding technique; in earlier generation, a planting group contains about 300 plants (strains), so that compared with thousands of single plants (strains) for mutation breeding, the work load is smaller; during orientation selection, the selective pressure is increased by successive generations, so that the frequency of acquiring different types of high oleic acid is increased, and the breeding efficiency is improved. According to the method provided by the invention, the breeding selection group is small, the work load is small, the variation range is large, and high oleic acid brassica napus genetic resources with the oleic acid content being higher than 80 percent are obtained.

The invention relates to a method for maintaining rapid advantages of variant lines stable with solar energy focal radiation on sprout grains. The method specially comprises the following steps: selecting grain seeds; performing moistening and sprouting; placing the seeds in a certain shape; performing dibble seeding in a pyramid shape; performing radiation on the seeds in three steps; performing optimization on plants; performing backcrossing; obtaining advantage polymerization. The method disclosed by the invention is implemented, the technology is simple, the operation is easy, and only simple appliances including magnifying glass and the like are needed; but the variant probability is high, and the rapid advantages of the variant lines are maintained stable. The method disclosed by the invention is implemented, the first generation varies, and the variation rate reaches 15% or above. Sterile plants appearing in the method provide a new way for cultivating novel female parents. Besides, after backcrossing, new varieties are bred, and have the advantages of lodging resistance, high temperature resistance, broad adaptability, steady yield, and excellent color, fragrance and taste of rice. The yield of cultivated saline-alkaline resistant two-line sterile lines and the yield of early-maturing conventional rice, mid-maturing conventional rice and late-maturing conventional rice are increased by 2 times or above than that of original seawater rice. The bred three-line sterile lines have the characteristics and the functions that steamed red rice, steamed black rice and steamed brown rice are fragrant and soft, and steamed rice does not become hard after being put for a night.

The invention relates to a Chongming narcissus new variety selection method and cultivation method. The selection method includes: performing 60 Co gamma radiation treatment on Chongming narcissus bulbs, wherein the radiation dose is 8-12 Gy; cultivating the Chongming narcissus bulbs for at least 2 growth seasons after radiation treatment; planting the treated Chongming narcissus bulbs during 1 week after radiation treatment, and selecting bulbs which have significant character differences from the original variety and have ornamental value; performing later growth season cultivation on the selected bulbs; and finally selecting bulbs having a stable ornamental character, and obtaining a variant new variety of the Chongming narcissus. The selection method is easy to operate, is low in cost, and is high in mutation probability; through 3 growth season cultivation, the variant new variety is stable in ornamental character; during selection, the new variety is cultivated through soilless substrate, the problem of severe virus accumulation and bulb degeneration can be solved, and the excellent characters of the Chongming narcissus can be effectively ensured.

The invention discloses a genetic algorithm-based course scheduling system design method, and belongs to the field of algorithm analysis and design in algorithm theories. Aiming at the problems of inaccurate encoding mode, fixed crossover variation rate and unreasonable fitness function of the genetic algorithm in the prior art, the encoding mode of the traditional genetic algorithm is improved, the traditional binary encoding mode is improved into a decimal encoding mode with specific significance, and the encoding mode is more standard and accurate. According to the method, the crossover rate and the mutation rate of the genetic algorithm can automatically change along with the fitness, and the algorithm can be quickly converged to a globally optimal solution by improving the self-adaptive crossover rate and the mutation rate of the genetic algorithm. A fitness function is improved in the aspects of teaching time period distribution uniformity, student curriculum arrangement uniformity, curriculum time period arrangement goodness and the like, experimental data comparison is performed on a traditional genetic algorithm and an improved genetic algorithm, and the performance and efficiency of the improved genetic algorithm in curriculum arrangement are more satisfactory.