55 results about "Mathematical principle" patented technology

Disclosed is a method and system for simultaneously acquiring and producing results for multiple image modes using a common sensor without optical filtering, scanning, or other moving parts. The system and method utilize the Walsh-Hadamard correlation detection process (e.g., functions/matrix) to provide an all-binary structure that permits seamless bridging between analog and digital domains. An embodiment may capture an incoming optical signal at an optical aperture, convert the optical signal to an electrical signal, pass the electrical signal through a Low-Noise Amplifier (LNA) to create an LNA signal, pass the LNA signal through one or more correlators where each correlator has a corresponding Walsh-Hadamard (WH) binary basis function, calculate a correlation output coefficient for each correlator as a function of the corresponding WH binary basis function in accordance with Walsh-Hadamard mathematical principles, digitize each of the correlation output coefficient by passing each correlation output coefficient through an Analog-to-Digital Converter (ADC), and performing image mode processing on the digitized correlation output coefficients as desired to produce one or more image modes. Some, but not all, potential image modes include: multi-channel access, temporal, range, three-dimensional, and synthetic aperture.

DNA taggants in which the nucleotide sequences are defined according to combinatorial mathematical principles. Methods of defining nucleotide sequences of the combinatorial DNA taggants, and using such taggants for authentication and tracking and tracing an object or process are also disclosed.

The invention discloses a spatial modeling method used for linkage of a single gun camera and multiple dome cameras, relating to the fields of video surveillance, computer vision, pattern recognition and the like. The method comprises the following steps: (1) performing 3D spatial modeling on a monitored scene (201); (2) calculating the mapping relation of a coordinate point of a picture of the gun camera to a coordinate point of the true monitored ground (202); (3) obtaining a tracking detection result of the gun camera (203); (4) obtaining spatial position information of a tracked object (204); (5) calculating the offsets of the dome cameras (205); (6) controlling the dome cameras (206); (7) outputting the tracking result by the dome cameras (207). The tracked object is always positioned in center areas of the pictures of the dome cameras, so the defects of tracking picture discontinuity and dome camera picture judder are overcome; by using relevant mathematical principles, the position of the true object can be accurately and fast calculated by one-time scene calibration; by using the spatial modeling method, mathematical formulas of space geometry can be used for accurately calculating the offsets of the dome cameras, and the object tracking can be more continuous and more accurate.

A computer-based educational system provides the user or instructor with a suite of graphic editing tools, allowing the design of graphical objects, such as symbols and text that can be displayed to a viewer, such as a student, using a projector or computer terminal. In order to facilitate the educational process, the invention provides the user with robust ability to control parameters of the graphical objects, allowing the user to create simulations or models of subject matter, such as mathematical principles, in order to facilitate the educational process. In the preferred embodiment, the parameters of these graphical objects can actually be defined in terms of variables and specifically functions or expressions including those variables and then the values of the variables controlled in real-time by the user. This ability allows the user to control the execution of the simulations or models, enabling the user or instructor to dovetail the execution of those simulations with the instructional process.

The invention discloses an image compression method and device for real-time code rate pre-distribution. The method comprises the steps of transform, code rate pre-distribution and entropy coding, wherein multilevel integer wavelet transform is adopted in the transform to remove related redundancy among original image pixels, to-be-contributed code rate of each sub band in actual coding is guidedby combining the rate distortion theory and the importance principle of each sub band of the transformed image on image reconstruction quality influence, and the final entropy coding is guided by using the pre-distributed code rate to realize real-time stop of the coding rate. The tasks of the method are divided in the compression device, the compression device comprises a field programmable gatearray (FPGA) and a digital signal processor (DSP), high-speed multilevel integer wavelet transform is realized by using the FPGA, and the transformed data are transmitted to the DSP through a high-speed serial input output (SRIO) module interface and are compressed and coded. By using the current most typical embedded architecture and combining the corresponding mathematical principle, the storage space of mass data is effectively saved, and the limited transmission bandwidth problem is solved.

The invention discloses an analysis method for evaluating service life and reliability of a power VMOS (Vertical Metal Oxide Semiconductor) tube, which comprises the following four steps: step 1. creating a model for the power VMOS tube, and creating an H bridge artificial circuit; step 2. performing non-failure emulation on the H bridge; step 3. performing degradation emulation on the threshold voltage of the H bridge circuit; and step 4. comprehensively analyzing to obtain a conclusion in actual application. The analysis method disclosed by the invention emulates the common H bridge drive circuit of the power VMOS tube in actual application, analyzes the degradation drift of the threshold value, and analyzes and calculates on the parameters of the power VMOS tube through a mathematical principle to obtain the conclusion. The analysis method has a scientific conception and a novel method. The analysis method has good application value and brilliant application prospect in the technical field of security tests of power semiconductor components.

The invention discloses a natural language syntactic structure analyzing method and device based on a computer. According to the natural language syntactic structure analyzing method and device based on the computer, the mathematical thought of the composite function is used for conducting analysis on a natural language syntactic structure according to the mathematical principles and corresponding computer techniques in the subjects such as the abstract algebra, the set theory, the combinatorial mathematics and the computational linguistics by establishing a matrix model and a linear model. The natural language syntactic structure analyzing method based on the computer is easy to realize, and the accuracy of the analysis of composite sentence structures can be greatly improved.

The invention relates to resolving for a signal in space error (SISE). An SISE estimation value for reflecting a synthetic error of the signal in space in real time is acquired by processing data such as track and clock correction and the like in real time and integrating multiple error factors into an SISE final result by adopting the Overbound mathematical principle. The invention also relates to precision analysis of intermediate data and result data in SISE resolving. Besides, the invention also relates to verification for the signal in space error. By applying SISE at different moments to a positioning calculation and comparing the positioning calculation result with a known precise result in a positioning domain, if the positioning accuracy modified by the SISE is obviously higher than the positioning accuracy before being modified, the calculation for SISE parameters is true and valid.

The invention discloses a drug clinical comprehensive evaluation method based on the real world. The method includes the steps of establishing an evaluation object, establishing an index system, determining an index weight, establishing an evaluation methodology variable model, analyzing and summarizing results and the like. According to the method, a linear algebra method is used in the operation process, the mathematical principle is rigorous, the operation method is easy to understand and apply, system analysis and calculation are simplified, decisions are kept consistent easily, and the method is applicable to qualitative decision analysis or qualitative and quantitative decision analysis, convenient and rapid to use, easy to operate and suitable for application and popularization.

The current invention relates to the need in the art for a bow sighting device that provides accuracy with the versatility that allows the sighting device to be readily transferred to any bow and fully calibrated using minimal sight in distances. From two sight-in yardages, the current invention extrapolates the remaining yardages on a visible scale essentially filling in the gaps using known mathematical principles of trajectory. Vertically arced displacement of a bow sight used in conjunction with the current invention is capable of performing this desirable function on any bow while allowing the archer to manually select a desired range from full draw.

The invention discloses a computer-based method and device for analyzing natural language syntactic structures. According to the method and device, the natural language syntactic structures are analyzed by building a matrix model and a linear model and constructing a recursive function through the mathematical thought of a composite function according to mathematical principles of subjects including the abstract algebra, the set theory, the combinatorial mathematics, the computability theory, the computational linguistics and the like and corresponding computer technologies; meanwhile, methods such as the mathematical induction are comprehensively applied to proving important conclusions. By means of the method and device, one set of brand new mathematic models are built for sentences of the natural language, and the thought is basically different from that of a conventional traditional method; the two overall plug-in methods including the single-side same-direction order preserving method and the single-side same-direction non-order-preserving method are creatively provided, and a parallel syntactic constituent generating and processing method of a set family is creatively applied; the rules of the mathematic subjects and the computer subjects are sufficiently used, and the method is high in accuracy and large in operation amount, and has certain technological difficulty.

The invention relates to a method and a system for acquiring the aerodynamic load of an aircraft component. The method comprises steps as follows: an appearance mathematical model and pressure distribution database of the aircraft component and a calculation work condition are input; a force coefficient and moment coefficient database is acquired in combination with the appearance mathematical model and pressure distribution database of the aircraft component with a gridding vector method; a force coefficient and a moment coefficient under the work condition are acquired through interpolation on the basis of the force coefficient and moment coefficient database, and the aerodynamic load of the aircraft component is acquired. The method and the system for acquiring the aerodynamic load of the aircraft component have the benefits as follows: the mathematical principle is correct, operation is simple and convenient to implement, the method and the system have remarkable advantages in treatment of the aerodynamic load of an irregular structure of an aircraft, and the work efficiency is improved; the method and system are suitable for solving the aerodynamic load of any component of the aircraft and is superior to a traditional profile integral method due to the fact that the appearance of the aircraft is taken into consideration.

The invention discloses a hydrid interpolation parameterization-based mannequin design method which mainly uses points on a characteristic layer as control points, and points on an uncharacteristic layer as interpolation points, the scaling factors of the characteristic layer and the uncharacteristic layer are sequentially calculated so as to obtain the height h of the interpolation points in a vertical direction, and the change rate s in a horizontal direction to finally obtain the changed coordinates. In the invention, the mathematic principle is simple and clear and parameters can be easily controlled. By adopting hydrid interpolation parameterization design in combination with vertical and horizontal directions, and by using a spline joint principle, a globally parameterized model can maintain C1 continuity, and has integral resizing and local fine adjusting effects, so that the problem of smoothness after mannequin parameterization can be solved. By directly carrying out parameterization to the characteristic layer, the parameterized mannequin can be directly applicable in virtual garment simulation.

A kit for teaching mathematics that will allow students to reason and understand basic mathematical principles. The kit uses moldable materials such as: dough, clay, and commercially available plastically moldable materials e.g. “Playdough®”. The material is extruded to proper length and width befitting elementary youngsters. Cutters are used to fractionate the material. The fractions are used to solve elementary fractions, percentages, geometry, and algebra problems.

The invention discloses a method for measuring the time difference proportional displacement of a magnetostrictive sensor. The method is characterized by comprising the following steps: (1) a pulse signal generating and receiving module triggers generation of a periodic excitation originating pulse and sends the periodic excitation originating pulse to the input end of a waveguide wire of a magnetostrictive displacement sensor; (2) the time at which the pulse signal generating and receiving module acquires an excitation signal is recorded as t1, the time at which the signal reaches a coil from a measurement position is recorded as t2, and the time at which the signal returns to the coil through the start end of the waveguide wire is recorded as t3; and (3) inference is made based on the time at which the signal reaches the coil and mathematical principles to obtain the measured displacement X, wherein X=(t2-t1)/(t3-t2)2L. The error amount cancels each other out through the formula when the torsion wave propagation speed and the clock frequency of a system change, thus ensuring the precision of measurement. Moreover, clutter signals are filtered in a targeted mode, and specific noise signals are extracted and used, so that error caused by poor noise reduction effect is cleverly avoided.

A device and method for teaching, solving, and/or illustrating mathematical principles and equations is disclosed. The device comprises a set of increasing numerical values arrayed on a spectrum, each numerical value represented by a length, each length comprising a visual marker representative of the numerical value; wherein the visual marker is repeatedly displayed on the spectrum in a pattern corresponding to or at intervals in accordance with the visual marker's numerical value. Alternatively, the device may comprise a set of increasing numerical values on a spectrum, each numerical value represented by a length, each length comprising distinct visual markers representative of mathematical factors of the numerical value.

An anesthesia micro-infusion device at least comprises a diversion member, a converging member, connecting members, a rotary handle, an upper housing, a lower housing, a spring, a control circular groove, a first hollow hose, a second hollow hose, a third hollow hose, a fourth hollow hose, a first flow tube, a second flow, the third flow tube and a fourth flow tube. The upper housing and the lower housing are connected to form a rectangular housing. The diversion member and the converging member are respectively arranged at the left upper end and the left lower end of the rectangular housing formed by the upper housing and the lower housing. The rotary handle is arranged at the front right end of the rectangular housing. One end of the first hollow hose, one end of the second hollow hose, one end of the third hollow hose and one end of the fourth hollow hose are connected to the diversion member, and the other ends penetrate through the control circular groove arranged in the rotary handle to be respectively connected to the first flow tube, the second flow tube, the third flow tube and the fourth flow tube through the connecting members. The anesthesia micro-infusion device ingeniously uses the mathematical principle of permutations and combinations to achieve a function of multi-flow regulation of anesthesia micro-infusion.

The invention relates to a constructing method for an absolute orientation model of an airborne InSAR DEM (Interferometric Synthetic Aperture Radar Digital Elevation Model). The constructing method for the model comprises the following steps: firstly, converting a slope-distance DEM into a ground distance DEM; and secondly, considering the ground distance DEM into a rigid body according to spatial similarity transformation, considering the deformation of the ground distance DEM as a combination of translating, zooming and rotating and realizing the resolving from SAR image coordinate jointed slope-distance DEM elevation information to ground three-dimensional coordinates. The constructing method can be used for SAR image positioning, InSAR DEM geocoding and InSAR area network joint geocoding of the InSAR. The realized model is simple in mathematical principle, high in convergence rate and high in precision. In addition, the realized model not only can be used for geocoding for single-shot InSAR DEM, but also can be used for the area network joint geocoding.

The invention provides a segmented digital pre-distortion method of a radio frequency power amplifier. According to the segmented digital pre-distortion method of the radio frequency power amplifier, a complete SCPWL segmented function is used for replacing traditional power series to construct a predistorter, and the limits of an existing method are broken through based on mathematical principles. According to the basic method, a characteristic curve of the predistorter is segmented into small sections, the nonlinear strength of each section is reduced, and therefore the order of each section is lowered. The segmented digital pre-distortion method of the radio frequency power amplifier is quite simple to achieve, only needs a simple subtracter, does not need comparative judgment operation, and can be achieved through the method of delaying first and segmentation second, and therefore the module of the entire predistorter can be standardized, has the potential of improving the effect of the predistorter and lowering hardware implementation difficulty.

The invention discloses a DFIG-containing electric power system random fuzzy continuation power flow method. By taking multiple uncertainties of injection power of a DFIG wind turbine generator, a mechanical model and a steady-state operating model of a DFIG wind power plant are established; a DFIG steady-state operating equation is embedded to system power flow calculation to deduce a DFIG-containing electric power system Jacobian matrix; and by adopting a tangent prediction method and lambda correction, a DFIG-containing random fuzzy continuation power flow calculation method is established; specifically, a voltage collapse point voltage amplitude and a load growth factor are discussed singly, and according to a mathematical principle of an uncertain theory, it is known that that the voltage collapse point is also a random fuzzy variable, so that the uncertainty characteristic of the voltage collapse point can be better represented in an all-around manner by the random fuzzy continuation power flow method; influence of multiple uncertainty injection of the wind turbine generator to the voltage collapse point can be disclosed; and by embedding the DFIG stable equation into the continuation power flow calculation, the gradual-change influence of changeable wind speeds to the system voltage collapse point can be reflected, so that the method can better satisfy actual conditions.

The invention relates to the sea dike government, the protection, the shallow sea culture, the sea bath and the comprehensive development and utilization of mudflat. The mathematical principle of polyhedra three-dimensional permutation and combination and the rule and principle of physical water wave displacement superposition are adopted and combined quadrangular prefabricate blocks are produced by processing the same kind of reinforced concrete material. The quadrangles are placed frontward on the deep waterline of the shallow sea and the like to form the double T-shaped wave-breaking dike and detached breakwater. The area between the double T-shaped wave-breaking dike and the breakwater is used for developing the marine product breeding industry, the bathing beach, the fishing boat handling, the tourism and other projects. The invention conforms to the principle of mathematics and the mechanical principle of physics, and permanent income can be obtained through one-time investment.

The invention requests to protect a simple easing game solving method based on pruning search, which is characterized by comprising the following steps of: 101, establishing a decision tree, 102, establishing a hash table, 103, carrying out data preprocessing, 104, establishing a strategy diagram, 105, searching the decision tree; 106, searching a cache value; Mathematical principles of simple pier eating games are studied. The method comprises the steps of establishing a pruning tree which can be accurately solved, traversing all low-order instances in a given range through recursion, establishing a Hash cache table, performing data ground preprocessing and data structure equivalent conversion, accurately solving an optimal solution of the given instance, and greatly improving the time efficiency compared with a naive maximum and minimum search. The simple pier-eating game is a true child game of classic pier-eating games such as bridges and Tarot, so that the method can help bridge or Tarot players to more accurately analyze strategies during the game, and can help computer intelligent programs of the bridges or the Tarot reduce the search space, thereby improving the time efficiency of the bridges or the Tarot.

The present invention discloses a manhole cover gripping tool, and belongs to the municipal construction tools. The manhole cover gripping tool comprises a connection disk (2), wherein the top surface of the connection disk (2) is vertically provided with a lifting hook (1), at least three hanging rings (3) are fixedly arranged on the bottom surface of the connection disk (2), each hanging ring (3) is hinged to a straight rod (5), the lengths of the straight rods (5) connected to each hanging ring (3) are equal, the terminal ends of the straight rods (5) are provided with inwardly bending clamping claws (6), the lifting hook (1) is the lifting point, the connection disk (2) is connected to the three straight rods (5) having the same length, the lower ends of the straight rods (5) are provided with the inwardly bending clamping claws (6), and the clamping claws (6) can be tightly embedded into the stiffener on the edge of the anti-subsidence manhole cover, such that the slipping during the lifting force applying can be prevented, and the safety and the reliability are provided. According to the present invention, the mathematical principle that the three points determine the one plane is utilized, wherein the three clamping claws (6) are uniformly distributed on the circumference of the manhole cover, such that the circumference of the manhole cover can be driven to be lifted at the same time, and the lifting deviation phenomenon cannot be generated.