735 results about "Control factor" patented technology

In fuel injector including an accumulator and an intensifier, fuel is injected such that an injection control valve and a piston control valve are individually controlled, an operational phase difference therebetween is regulated, and at least one of a maximum injection pressure, a rate of increase of an injection pressure at the start of an increase of pressure, a rate of decrease of the injection pressure at the completion of injection, a pilot injection pressure, and an after injection pressure of fuel injected from a fuel injection nozzle is arbitrarily changed. Namely, a pressure during a movement from a base common rail pressure of the accumulator to a static maximum pressure statically determined by an operation of the intensifier is positively used as a control factor of injection, whereby a fuel injection pattern can be implemented with an extremely high degree of freedom.

A vulnerability assessment method of water inrush from an aquifer underlying coal seam includes steps of: collecting main control factors determined by geological data of a target area to be assessed; quantifying relevant data against the main control factors to form thematic maps; performing normalization processing against attribute data corresponding to the respective thematic maps; establishing databases of normalized attribute data corresponding to the normalized thematic maps by utilizing GIS; determining a weight of each main control factor based on a constant weight model; determining a variable weight of each main control factor based on a zonation variable weight model; performing composite superimposition on the normalized thematic maps of the respective single main control factors, and newly building a topological relation of the relevant data among the attribute databases for performing multi-factor fitting analysis; and establishing a vulnerability assessment model based on the zonation variable weight model.

The invention discloses a method of hydrogenating liquefied petroleum gas to prepare ethylene cracking feed, which is provided with two reaction sections. Reaction material cooling operation is carried out between the two reaction sections, the mixture of C4 fraction raw material and hydrogen is cooled after passing through the first reaction section, then enters the second reaction section, non-precious metal hydrofining catalysts are arranged in the two reaction sections, and a reaction material flow switching device is arranged between an inlet and an outlet of the two reaction sections to change the sequence of the reaction material flow entering the two reaction sections. The method disclosed by the invention solves the problem that the olefin content does not reach the standard due to thermodynamic control factors, simultaneously the catalysts are entirely fully utilized, and the operating cycle can be prolonged.

The invention establishes a nonlinear and coefficient variation infectious disease predictive model aiming at epidemic diseases with viruses which have infectivity at a latent period and a period of onset, provides an epidemic situation control function directly related to the model, simulating and predicting effects of different control measures and different control degrees on the basis of prediction in consideration of the control measures, considers the epidemic situation control as a continuous change process, integrally simulating and predicting development and control of the epidemic situation and provides crucial quantitative information for decision-making departments to optimally decide and control the epidemic situation with the smallest cost. By adopting the invention, a relative error for simulating SARS (Severe Acute Respiratory Syndromes) in Beijing areas in 2003 is 0.98% and predictive results for influenza A virus subtype H1N1 in US and Japan are well matched with the actual epidemic situation development, a quantified control factor for preventing the influenza A virus subtype H1N1 at an initial development stage and controlling the spread of the epidemic situation is obtained and epidemic situation development conditions of different control intensities and different susceptible people are predicted.

Aspects of the disclosure relate to an autonomous vehicle that may detected other nearby vehicles and identify them as parked or unparked. This identification may be based on visual indicia displayed by the detected vehicles as well as traffic control factors relating to the detected vehicles. Detected vehicles that are in a known parking spot may automatically be identified as parked. In addition, detected vehicles that satisfy conditions that are indications of being parked may also be identified as parked. The autonomous vehicle may then base its control strategy on whether or not a vehicle has been identified as parked or not.

A remote sensing image near-lossless compression hardware realization method based on improved JPEG-LS algorithm comprises the steps (1) directly calculating to obtain a pixel reconstruction value by the pixel actual value of an input image and accomplishing the calculation in a single clock period by using a formula Rx=int[Ix/(2Near+1)]*(2Near+1), in the formula, the Rx and the Ix are respectively the pixel reconstruction value and actual value, the int is rounding operation, and the Near is a compression ratio control factor; (2) calculating a context environmental variable Q according to the obtained pixel reconstruction value, if Q is equal to 0, performing run coding, otherwise, going to a step (3) of performing conventional coding; (3) calculating the predictive value of the current pixel by the pixel reconstruction value according to the geometric position relation between the current pixel and the adjacent pixel; (4) calculating the residual value between the predictive value and actual value of the current pixel; and (5) performing Golomb coding after quantising the obtained residual value, and synchronously updating the parameter variable corresponding to the context environmental variable Q using the quantisation result.

The invention belongs to the oil gas exploration exploitation field and particularly relates to a method capable of realizing quantitative prediction on a favorable oil gas accumulation area. The method comprises steps that, (1), parameters capable of representing oil gas accumulation influence factors and a mathematics calculation method thereof are determined; (2), a main control oil gas accumulation factor is determined; an influence factor of the main control oil gas accumulation factor is determined; (4), a mathematics model of the main control oil gas accumulation influence factor is established; (5), a mathematics model capable of comprehensively evaluating the oil gas accumulation potential is established; and (6), calculation result mapping and evaluation are carried out. According to the statistics relationship among oil gas distribution, output capacity and the main control factor, a conception model and the mathematics model of the main control factor influencing oil gas accumulation in a deposition basin are established, quantitative evaluation on oil gas accumulation under the control of multiple factors in a certain area is carried out, and evaluation on the oil gas accumulation condition is switched from a traditional qualitative mode to a quantitative mode .

A plant growth regulator containing glutathione allows increasing harvest index. This provides a technique for specifying a control factor for a plant, thereby effectively controlling germination, growth, anthesis etc. of the plant.

In an endless belt type image heating apparatus, in accordance with an endless belt contact state, an endless belt rotational speed, and a kind of a recording material, the steering displacement of an endless belt deviation control is determined, and excess the endless belt deviation is prevented by complimenting the control factoring a deviation tendency.

The invention relates to a dynamic prediction method of landuse change. The basic idea of GeoCA-Landuse model simulating landuse change can introduce the life character of the land element and simulate the dynamic evolvement of the type of the landuse. Beginning with the superimposition analysis and the transfer analysis of the two phase landuse thematic map, combining with the measurement model of landuse change, analyzing the the landuse change character. According to the model controlling factors of river system and road map analysis, constructing the layer of the controlling factors, determining the reasonable neighbors and transfer rules in light of the historical land-use change process, with the combination of adjusting the model parameters of the social economic data. Setting a powerful spatial data processing of GIS, the land use trend is simulated and predicted. The invention can simulate the dynamic trend of the landuse change and provide a scientific basis for decision-making.

The invention provides an impact danger evaluation method of a mine pre-exploiting coal seam. The method comprises the following steps: establishing a mine area three-dimensional digital geological model and visualizing the model; grasping a space occurrence environment of a coal seam; determining a geological master control factor of a rock burst; performing grid division on a horizontal projection of a pre-exploiting coal seam area, quantifying a geological master control factor of each grid point, and forming a coal seam impact danger evaluation index system; generating an isoline nephogram of each index; establishing a mine pre-exploiting coal seam impact danger evaluation model; and evaluating an impact danger grade of each grid point, obtaining an impact danger grade of any position of the mine pre-exploiting coal seam area, and generating and visualizing an impact danger grade nephogram of the mine pre-exploiting coal seam area. According to the invention, by use of a digital visualization geological information technology, an impact danger area is preliminarily grasped in advance before the coal seam is exploited, relevant prevention and control measures can be taken in a danger area, and method provided by the invention has wide application prospect for safe coal seam exploitation of a rock burst mine.

The invention discloses an audio spread spectrum watermark processing method for protecting the audio data, comprising two processes: a watermark embedding process and a watermark extraction process; in the embedding process, a wavelet de-noising technique is used for separating the noise of the signal and noise intensity control factor is used for reducing the noise signal intensity, and the effect of the noise of the signal on the detector performance is reduced; in order to improve the performance of the detector, the wavelet de-noising technique is also used in the water extraction process; in order to overcome the problem of excessively large correlation sliding detection calculation quantity in the corresponding detection, a synchronous positioning mechanism is designed. The algorithm is applicable to music and speech, which can effectively resist the attack of normal signal processing, more particularly, the attack of DA/AD conversion, thus being applied to the fields such as audio copyright protection, temper-proofing, certification, etc.

The invention discloses a video processing device and method to improve brightness and quality of display panel, which comprise: using a color distribution calculation unit to decide and classify original video color data and calculate the rate of all data in the second block; using a control factor generation unit to determine a conversion control factor to convert original RGB data into (R'G'B'W') data and a backlight brightness control factor for a control unit to control the backlight brightness.

In a density control technique wherein a density of a toner image formed as a patch image is detected for performing density control based on the detected result, detection errors are decreased so as to properly set a density control factor. The density control factor is optimized based on a variation rate of the patch image densities against a varied density control factor. The detected results of the patch image densities are corrected based on information on an image carrier acquired before the formation of the patch images.

The invention provides a method for generating a dolomite reservoir geochemical plate. The method comprises the following steps: selecting a dolomite sample according to a core structure, and preparing the selected dolomite sample into sample pieces; carrying out electronic probe microanalysis, laser carbon oxygen isotope analysis, strontium isotope analysis and rare earth element analysis on thesample pieces to generate analysis data; determining the genetic type of the dolomite reservoir according to the sample pieces; and generating a geochemical plate according to the analysis data and the genetic type. By utilizing the dolomite reservoir geochemical plate in the invention, the genetic type of the dolomite reservoir can be accurately and rapidly identified; compared with the traditional method, the genesis of the reservoir is more accurate and reliable, and the reservoir formation mechanism and master control factors can be known deeply.

The invention provides a draw-down test analysis method for an underground shut-in water well with a low-permeability storage layer, and the method is applied to the technical field of oil well tests in oil fields. In the method, a base data analysis unit, a primary base feature analysis unit, a secondary main control factor analysis unit and a tertiary data analysis model unit are utilized, wherein the primary base feature analysis unit is used for utilizing the base data of the base data analysis unit to determine a geologic model for detection and analysis, judging the pressure propagation characteristic of the low-permeability storage layer and forming the superposition mode of bottomhole pressure drawdown in a drawn-down test; the secondary main control factor analysis unit is used for carrying out diagnostic analysis on the control degree of a geologic factor, a process factor and a dynamic factor on the pressure drawdown mode of the drawn-down test and determining main control factors according to the conclusion of the primary base feature analysis unit; and the tertiary data analysis model unit is used for selecting the draw-down test analysis method according to the conclusions of the primary base feature analysis unit and the secondary main control factor analysis unit and adopting different well test interpretation models according to the main control factors.

The invention relates to a frangibility index method for evaluating seam floor water inrush, which comprises the following steps: determining main control factors of the seam floor water inrush by taking GIS as an operating platform based on a multi-source information fusion theory, and establishing a sub-subject layer diagram for each main control factor through data acquisition, analysis and processing; determining the 'contribution' or the 'weight' of each main control factor to a complex water inrush process and establishing a forecast evaluation model for the seam floor water inrush through the inversion identification or the learning training of the model by applying a multi-source geoscience data composite superposition principle and adopting a modern linear or non-linear mathematical method; and reasonably determining a subarea threshold value of the water inrush frangibility according to the analysis of a frequency histogram of water inrush frangibility indexes calculated by each unit in a research area and finally making a scientific division and a forecast evaluation on the seam floor water inrush frangibility. The method well overcomes the difficulty of the forecast evaluation on the seam floor water inrush, breaks through the restriction by significant deficiencies that the conventional water inrush coefficient method for the seam floor water inrush evaluation can only consider two control factors and has no influence 'weight' concept and the like, and adopts the GIS and the modern non-linear mathematical coupling method to truly depict the non-linear dynamic process of the seam floor water inrush which is controlled by a plurality of factors and has a very complicated formation mechanism.

The invention relates to an airborne meteorological radar ground clutter suppression method based on double threshold control. The airborne meteorological radar ground clutter suppression method comprises the following steps of: 1) reading inertial navigation parameters and a radio altitude value from an airborne navigation equipment; 2) compensating a clutter frequency spectrum center nearby a zero doppler frequency by utilizing prior information to obtain a clutter region and a spectrum width evaluation initial value; 3) calculating an echo power of each distance unit; 4) evaluating a clutter spectrum center and a spectrum width by utilizing a polar coordinate centroid method; 5) setting a control factor according to the echo powers; 6) calculating a spectrum width threshold and an amplitude control threshold by utilizing the control factor; 7) calculating the number of doppler channels (exceeding the thresholds) in the clutter region of each distance unit; and 8) utilizing the number of the ultralimit channels to design a self-adaptive notch filter, so that the aim that an airborne meteorological radar ground clutter can be realized. The airborne meteorological radar ground clutter suppression method is suitable for airborne meteorological radar ground clutter suppression in a wind shear mode and is simple; and with the adoption of the airborne meteorological radar ground clutter suppression method, the clutter suppression effect is good, and influences on target signal albefaction during the clutter suppression and influences of a residual clutter on a wind shear signal can be reduced.