1843 results about "Improvement methods" patented technology

Methods and apparatuses for improved position determination of a device using multiple pseudo range measurements from transmitting sources at known locations, such as GPS satellites. A plurality of pseudo range measurements for each transmitting source are processed together to obtain a simplified maximum likelihood estimate for the pseudo range for that transmitting source at a common reference time. The processed pseudo range estimates for all transmitting sources are then combined using conventional position determination algorithms. This technique facilitates removal of raw measurement outliers prior to position determination, which results in improved (i.e., more accurate) position fixes of the device. In addition, improved measurement integrity monitoring of the pseudo range measurements is a feature of this invention.

Background images are removed and only the desired payment information is extracted from a grayscale image of a check or similar financial instrument. A density distribution improvement process applied to grayscale raw image data 40 acquired by scanning a check corrects the density distribution of the raw image data 40 to separate the density range of the desired payment information from the density range of the background image. Image sharpening or contrast enhancement can be used as the density distribution improvement method. A threshold level 44 for clearly separating the payment information from the background image is then calculated from the characteristics of the density distribution of the grayscale improved image data 42 acquired by the density distribution improvement process. Histograms of the density distributions are used to determine the characteristics of the density distribution. The improved image data 42 is then converted to binary image data 46 using the threshold level 44. Most of the background image is white and most of the desired payment information is black in the binary image data 46.

The invention provides an image switching accuracy improving method and device which is used for multi-camera system which can produce wide-angle image. The distortion of lens will make the overlap area photographed by multi-camera not accord with the characteristics, so, the gap of combined wide-angle images can be seen. The image switching accuracy improving method and device provided by the invention proofreads the distortion of lens, and makes the characteristics in overlap area accord with it and jointing engine can produce the seamless wide-angle image easily.

The invention discloses a PTAM improvement method based on ground characteristics of an intelligent robot. The PTAM improvement method based on ground characteristics of the intelligent robot comprises the steps that firstly, parameter correction is completed, wherein parameter correction includes parameter definition and camera correction; secondly, current environment texture information is obtained by means of a camera, a four-layer Gausses image pyramid is constructed, the characteristic information in a current image is extracted by means of the FAST corner detection algorithm, data relevance between corner characteristics is established, and then a pose estimation model is obtained; two key frames are obtained so as to erect the camera on the mobile robot at the initial map drawing stage; the mobile robot begins to move in the initializing process, corner information in the current scene is captured through the camera and association is established at the same time; after a three-dimensional sparse map is initialized, the key frames are updated, the sub-pixel precision mapping relation between characteristic points is established by means of an extreme line searching and block matching method, and accurate re-positioning of the camera is achieved based on the pose estimation model; finally, matched points are projected in the space, so that a three-dimensional map for the current overall environment is established.

A method and system for improving a call drop caused by a Radio Link Failure (RLF) before handover triggering in a mobile communication system are provided. The method of improving the call drop caused by the RLF in the mobile communication system includes detecting an RLF occurring before handover triggering (RLF_before_HO), generating one of an RLF_before_HO-dependent statistics and an RLF_before_HO-dependent log file, transmitting the one of the RLF_before_HO-dependent statistics and the RLF_before_HO-dependent log file to a serving Base Station (BS), and updating a Neighbor Relation Table (NRT) and optimizing a handover parameter using the one of the RLF_before_HO-dependent statistics and the RLF_before_HO-dependent log file.

The invention relates to an improvement method of needle coke used refined aromatic hydrocarbon oil. The improvement method of the needle coke used refined aromatic hydrocarbon oil comprises the following steps: taking oil rich in aromatic hydrocarbon, heating the oil to 400-490 DEG C by a heating furnace, introducing the oil into a polymerization tower, taking the material at the bottom of the polymerization tower and introducing the material into a flash tower, taking the flashed material at the bottom of the flash tower, cooling the material to the room temperature, introducing the material into a gas-liquid separator, controlling the vacuum degree in the gas-liquid separator to be 5-10kpa, taking the material at the bottom of the gas-liquid separator, and enabling the material to flow into a refined aromatic hydrocarbon oil buffering tank to prepare the raw material which is refined aromatic hydrocarbon oil for producing needle coke. The improvement method of the needle coke used refined aromatic hydrocarbon oil is simple in process; the oil rich in aromatic hydrocarbon with low content of aromatic hydrocarbon in domestic oil refining plant is processed, the content of the aromatic hydrocarbon is increased; the prepared refined aromatic hydrocarbon oil is applicable to production of the needle coke.

A code-division-multiple-access (CDMA) system employing spread-spectrum modulation. The CDMA system has a base station (BS), and a plurality of subscriber units. The signals transmitted between the base station and subscriber unit use spread-spectrum modulation. The improvement method for adaptive reverse power control (APC) from a subscriber unit (SU) to a base station (BS), comprises the steps of sending from the subscriber unit, using spread-spectrum modulation, a SU-spreading code on a reverse channel. The base station despreads the SU-spreading code on the reverse channel as a despread signal, determines a first power level Pd which includes power of the despread signal plus noise and a second power level PN, which includes despread-noise power. The base station determines a first error signal e1, from the first power level Pd, the second power level PN, and a required signal-to-noise ratio SNRREQ for service type, and a second error signal e2, from a measure of total received power Prt at the base station, and an automatic gain control (AGC) set point Po. The base station forms a combined error signal from the first error signal e1, the second error signal e2, a first weight a1, and a second weight a2, and hard limits the combined error signal to form a single APC bit. The APC bit is transmitted to the subscriber unit. In response to the APC bit, the subscriber adjusts transmitter power to the base station.

The subject invention reveals improvement methods for circuits that use a coupled inductor wherein overshoot and ringing associated with leakage inductance of said coupled inductor is entirely eliminated by addition of non-dissipative active clamp networks that clamp each winding during each operating state of a power supply containing said coupled inductor. A further improvement applicable to zero voltage switching circuits that employ an inductor for driving a zero voltage turn on switching transition of a switch enables elimination of said inductor and preserves said zero voltage switching properties by adding leakage inductance to a coupled inductor without any adverse overshoot and ringing effects associated with said leakage inductance. The subject invention also reveals a coupled inductor with enhanced leakage inductance which can be used with said other improvements. Example circuits including zero voltage switching flyback and forward converters which require only one magnetic circuit element are revealed. Zero voltage switching tapped inductor buck and boost converters with a single magnetic circuit element are also revealed.

The invention relates to a locating method based on mixed TDOA and ToF. The method is characterized by including the steps that firstly, a server selects a main base station and auxiliary base stations and time synchronization among the base stations is completed; secondly, a TDOA message is broadcast through a label and the distance differences between the label and the base stations are calculated through the differences of time when the message reaches the base stations; thirdly, a ToF message is sent to a specific base station through the label so that the distance between the label and the specific base station can be calculated; fourthly, through calculation results in the second step and the third step, the distances between the label and all the base stations are calculated; fifthly, the position of the label is calculated through the distances between the label and all the base stations. Through the improvement method, the same accuracy can be acquired inside and outside a triangle formed by the base stations.

The invention discloses a saline-alkali soil improvement method. The saline-alkali soil improvement method comprises the following steps: a step I of leveling and cultivating, wherein the saline-alkali soil is firstly leveled and then deeply cultivated by 40 centimeters by virtue of deep-ploughing machinery; after being diluted by 100 times with water, green manure nutrient liquor brewed by a three-in-one leavening agent is used for irrigation; a step II of applying fertilizer and cultivating, wherein aeolian sandy soil easily obtained locally is uniformly scattered on the surface of primarily leveled and cultivated soil; a step III of preparing rectangular pieces of land in a field and planting, wherein planting ridge rectangular pieces of land in the field are designed and manufactured; a step IV of subsequently governing, wherein measures of not using fertilizers and substances which are not chemically synthesized in early-stage, middle-stage and later-stage filed management processes after the plants are planted, not watering and uninterruptedly irrigating the green manure nutrient liquor are taken. The saline-alkali soil improvement method disclosed by the invention can be used for strengthening soil fertility, and changing physical and chemical properties and microbial activity of the soil.

The invention provides an LEACH protocol improvement method capable of lowering energy consumption. A basic system comprises normal nodes, cluster header nodes, forwarding nodes and a base station. The specific cycle operation steps comprise network topology determination, initialization, selection of the cluster header nodes, cluster forming, data transmission, selection of the cluster header nodes and cluster forming. According to the defects of an LEACH protocol, improvement is conducted from the aspects of selection of cluster heads, cluster forming and a data transmission mode. In selection of the cluster heads, the comprehensive influences of the energy of the nodes, the distance to the base station and density are considered, the burdens of the cluster heads are balanced, and distribution and energy consumption of the selected cluster header nodes are made balanced in a network. In cluster forming, the mode of grid clustering is used, the nodes calculate the two-dimensional values of grids where the nodes are placed by themselves, and the effectiveness of node energy is guaranteed. In data transmission mode, a routing mode with single-hop and multi-hop combined is used according to the distance of the cluster header nodes and the base station, the energy consumption of network nodes is lowered by the purpose that the energy utilization rate is highest.

The invention discloses an improvement method of a Ngram model for voice recognition, comprising the following steps of: converting an original Ngram model for voice recognition into an equivalent WFSA (Weighted Finite-State Automaton) network NET1; optimizing the NET1 by using an RNN (Recurrent Neural Network) to ensure that the output possibility for each sentence in a training text is maximized when the training text is marked by using the NET1; converting the NET1 into a WFST (Weighted Finite State Transducer) pronunciation network NET2 with voice model possibility by utilizing a pronunciation dictionary; optimizing the pronunciation network NET2 by utilizing a phoneme confusion matrix to ensure that the error rate of sentences is minimized; and reversely converting the pronunciation network NET2 into an improved Ngram model, and carrying out voice recognition by using the improved Ngram model.

A visibility improvement method using gaze tracking includes detecting a gaze of a user using a camera; determining a focus object at which the user gazes from among at least one object viewed through a display unit of an electronic device; and displaying, on the display unit, an image with high visibility that corresponds to the focus object and has higher visibility than the focus object.

A computer system for multiplying a first matrix and a second matrix that reduces rounding error, including a processor, a memory, a storage device, and software instructions stored in the memory for enabling the computer system, under the control of the processor, to perform obtaining a first set of dimension values for the first matrix and a second set of dimension values for the second matrix, selecting one of a plurality of multiplication permutations if the first set of dimension values and the second set of dimension values are greater than a crossover value, multiplying the first matrix by the second matrix using the multiplication permutation and a Strassen-Winograd method, recursively sub-dividing the first matrix and the second matrix producing a set of sub-matrix products and a recursion tree, and propagating the set of sub-matrix products up the recursion tree to produce a product matrix.

A golf training and game system is situated in a golf playing facility with tee and target areas. At each target area an overview video camera captures an image of the target area when a golf ball is hit from a tee. A target measuring system performs image improvement methods on the captured image, detects possible balls, and calculates coarse real coordinates for the possible balls. A memory stores real coordinates for previously-identified balls. Coordinates for possible balls and identified balls are compared to determine new balls to be identified. New ball coordinates are used to position, zoom and focus a zoom video camera and capture a fine image. The target measuring system performs image improvement methods and pattern recognition on the fine image to identify the new balls and get fine real coordinates. Information sent to a tee terminal gives feedback to the players.

Methods and conductive interconnect structures are provided for preventing cracks in a dielectric layer on a substrate. Substantially half cylindrical or cylindrical trench openings are formed within at least one dielectric layer, which are then filled with a high conductivity metal for forming substantially half cylindrical or cylindrical wires. The rounded bottom portions of the substantially half cylindrical wires, or the rounded bottom and top portions of the substantially half cylindrical wires, avoid any propagation points for starting cracks in the dielectric layer, as compared to conventional rectangular conductors having angled edges, which in fact are propagation points for initiating cracks. The substantially half cylindrical or cylindrical wires also reduce the line-to-line capacitance between neighboring wires, substantially eliminate any high stress points in the dielectric layer, reduce mechanical stresses induced on the IC and increase the overall mechanical strength of the IC.

A virtual mentoring system for assessing traits and improvement needs of a user is disclosed. The virtual mentoring system generates a personalized plan for the user that includes recommendations for reducing one or more inhibitors inversely correlated with improvement areas.

An embodiment of the invention discloses a terminal jamming improvement method. The method comprises the steps of detecting a frame rate of a display image of a terminal every a first preset time; obtaining a jamming frequency of the display image within a next second preset time when it is detected that the frame rate of the display image is smaller than a preset frame rate threshold; judging whether a memory usage rate of the terminal is higher than a preset rate threshold or not when the jamming frequency is higher than a preset frequency threshold; and if yes, ending a part that is running currently or all processes. Correspondingly, embodiments of the invention furthermore disclose a terminal jamming improvement apparatus and the terminal. With the adoption of the method and apparatus as well as the terminal, the jamming can be actively improved when serious jamming occurs for the display image.

The invention relates the hydrogenation reformed method for decreasing the ungraded petrol and alkene content. The method comprises the following steps: selectively hydrotreating the ungraded full fraction petrol, then pre-fractionating, the light cut carried out the reformed reaction of aromatization, isomerization and benzene-alkylation, the heavy cut carried out selective hydrogenation and desulfuration reaction, mixing the reaction product to prepare the end product of cleaning petrol. The said method can manufacture the ungraded petrol raw material to cleaning fuel, and keep the octane number from damaging at the same time of desulfuration. The current techniques all don`t reach the above requirements at the same time. The method can manufacture the ungraded catalytic gasoline, coker gasoline, catalytic gas oil and thermal cracked gasoline into high quality cleaning petrol product.

The invention provides an improvement method for a selective catalytic reduction flue gas denitrification and ammonia injection control system. An optimal control station is introduced into an original flue gas denitrification and ammonia injection control system. In an optimal control station module, parameters affecting coal fired boiler NOx generation amount and an original PID controller output ammonia injection amount control signal, and a dynamic neural network, an output sensitivity method is utilized to construct neuron in hidden layer, through comprehensive learning of the PID controller and the introduced parameters, and according to the output amount of the PID controller and the introduced parameters affecting boiler NOx generation amount, integrated computation is carried out to form dynamic compensation control quantity. In denitrification and ammonia injection amount control logic, the original PID controller is taken as the main controller, and the dynamic neural network ammonia injection amount prediction controller is adopted as the revision controller so as to obtain the adjustment amount of optimal ammonia injection amount, thus promoting reliable and economical operation of the denitrification system.

The invention relates to a controlled mutation-based test case generation method for improving fuzzy test coverage, and belongs to the field of loophole mining in information safety. Aiming at the problem that the existing fuzzy test coverage optimization methods are high in time cost, incomplete in test range and low in automation degree, the invention discloses a controlled mutation-based test case generation method. According to the method, feedback is carried out on test case generation processes by utilizing an instrumentation technology, and a random mutation manner and a controlled mutation manner are combined to optimize the test case generation. Experimental results show that when being compared with the un-optimized test methods, the method has the advantages of improving the code coverage by 35-47% and decreasing the number of test cases required under same code coverage by more than 48%. The method is not only capable of improving the test case coverage and decreasing the test case redundancy, but also has the characteristics of being low in time cost, complete in test range and free of manual intervention in test processes.

The invention discloses an improvement method for titanium alloy laser 3D printing and relates to an improvement method for laser 3D printing. The improvement method for titanium alloy laser 3D printing solves the problems that titanium alloy and components prepared through laser 3D printing at present are low in strength level and heat resistant temperature, the metallographic structure is thick and big and not even, the metallographic structure grows to be big in the subsequent heat treatment modification process, the technological parameter selectable range in subsequent heat treatment is narrow, the mechanical property improvement is limited, and the plasticity level of the alloy and the components is low. The improvement method includes the steps that firstly, titanium or titanium alloy powder is evenly mixed with improved raw material powder in a ball milling mode; secondly, laser 3D printing is conducted. The metallographic structure of a laser 3D titanium metal product prepared through the mode of execution is thin and small, a subsequent heat treatment window can be greatly expanded, a balanced structure formed by high-temperature annealing can be achieved, long-time solution strengthening processing or annealing processing can be conducted, the even metallographic structure is obtained, and the mechanical performance of the metallographic structure is greatly improved.

The invention discloses a method of modulating a variable pulse amplitude position and improving an error rate for a visible light communication system, belonging to the field of visible light wireless communication technologies. According to the method, modulation of the variable pulse amplitude position is utilized in a modulation module of a signal transmitting end, a modulation method is multi-system modulation capable of combining pulse amplitude position modulation and pulse width modulation, transmission of communication data is guaranteed while a system dimming function is provided, improvement of the communication quality mainly includes that the transmission rate can be improved under the condition of the same symbol rates, the advantages of high multi-system modulation bandwidth efficiency and high pulse position modulation power efficiency are combined, the spectral efficiency can be effectively improved, and compared with the other multi-system modulation manner, the complexity is lower. In order to further improve the error rate of the visible light communication system, the method utilizes a channel balancer based on a feed-forward back propagation multilayer perceptron on a receiving end, so that the error rate is effectively improved, and the communication quality is further improved.

The invention belongs to the field of energy and coal mine safety, and particularly relates to a coal mine down-hole drilling penetration improvement method based on a controllable shock wave technology. The method aims at solving the problems of high labor intensity and low safety of an existing gas treatment mode. Controllable shock wave generation equipment is pushed to the interior of a drilling hole, and after a hole opening sealing device is installed at a hole opening of the drilling hole, water is injected to the drilling hole; after the drilling hole is fully filled with the water, operation is conducted segment by segment, the middle of each operation segment is used as an operation point of shock waves, and repeated impact is conducted on each operation point multiple times. Under the effect of the injected water in the hole, the shock wave generation equipment does not need to work under the environment with explosive gas, and the shock waves are also efficiently coupled toa coal bed.

The invention discloses a molecular genetic improvement method for lowering rice seed holding by targeted modification on rice seed holding gene qSH1 by using a CRISPR (clustered regularly interspaced short palindromic repeats) / Cas9 system. The method comprises the following steps: 1) selecting an appropriate target; 2) establishing a vector containing the target spot sequence; 3) establishing a recombinant vector containing the target spot sequence by utilizing the vector; 4) introducing the recombinant vector into receptor rice to obtain a transgenic positive plant; 5) obtaining a targeted-mutation mutant plant by utilizing the transgenic positive plant; 6) carrying out additive-generation growth on the mutant plant to obtain a transgenic-component-free homozygous mutant plant; and 7) carrying out seed holding investigation by using the homozygous mutant plant to obtain the plant with obviously lower seed holding as the seed-holding-improved plant. The method has the advantages of high directionality, small genetic background changes and the like, can avoid the risks caused by genetic transformation, and can culture the new species and new combination of transgenic-component-free rice with obviously lower seed holding.

The invention relates to a fly ash floating bead surface modification technology, and specifically relates to a method for carrying out fly ash floating bead surface modification by using a compound silicane coupling agent. First, fly ash is subjected to sintering and acid-alkali pretreatments; and the pretreated fly ash is subjected to a surface modification treatment by using the compound coupling agent. When fly ash is processed through surface modification with the method provided by the invention, physical and chemical properties of obtained surface-modified fly ash floating beads are changed, dispersity of the beads in resin and organic polymers is improved, and compatibility of a filling material with interfaces of substrates such as resin is improved. Further, mechanical properties and other performances of high-molecular materials such as plastic, paint, and rubber are improved. Therefore, an improvement method is provided for better utilization of fly ash, and environment pollution is reduced.

A program parallelizing apparatus, a program parallelizing method and a program parallelizing program capable of creating a parallelized program of better parallel execution performance at a high speed. A fork point determination section extracts all fork points in a sequential processing program, and removes fork points with a static boost value satisfying a static rounding condition. A fork point combination determination section obtains a dynamic boost value and an exclusive fork set for each fork point that appears when the sequential processing program is executed with input data, and removes fork points with a dynamic boost value satisfying a dynamic rounding condition. As a maximum weight independent set problem, the fork point combination determination section obtains an initial combination of fork points, which are not in an exclusive relationship, with the maximum sum of dynamic boost values, and retrieves an optimal combination based on an iterative improvement method. According to the optimal fork point combination, a parallelized program output section creates a parallelized program for a multithreading parallel processor from the sequential processing program.

The invention relates to the agricultural field, in particular to an improvement method for saline-alkali soil. The improvement method for the saline-alkali soil comprises the following steps: sprinkling 10 to 50 kilograms of aluminum sulfate powders on the surface of the saline-alkali soil evenly; irrigating the soil with the aluminum sulfate powders and soaking the soil with the aluminum sulfate powders for 1 hour to 72 hours; compounding polyacrylamide with a dosage which is 5% to 20% of the dosage of the aluminum sulfate powders into a solution, wherein the mass concentration of the solution is no more than 0.5%; evenly spraying the compounded solution onto the water layer, and continuing to soak the soil with the aluminum sulfate powders for 8 hours to 24 hours; draining the water in the saline-alkali soil; and applying organic fertilizer and biological bacterial fertilizer to the saline-alkali soil. The improvement method for the saline-alkali soil can improve the sodium ions, the carbonate ions and the bicarbonate radical ions in the soil, so that the potential of hydrogen (pH) value of the solution of the soil can be reduced. The aluminum sulfate is increased, so that the soluble salts released by the soil particles are also increased, so that the salt materials in the soil can be reduced remarkably. Due to the fact that the macromolecule polyacrylamide is added, the soil can congeal into bigger particles like pea grains, so that permeability and water and fertilizer preserving capability of the soil can be improved.