60results about How to "The method is accurate and reliable" patented technology

A flow-based intrusion detection system for detecting intrusions in computer communication networks. Data packets representing communications between hosts in a computer-to-computer communication network are processed and assigned to various client/server flows. Statistics are collected for each flow. Then, the flow statistics are analyzed to determine if the flow appears to be legitimate traffic or possible suspicious activity. A concern index value is assigned to each flow that appears suspicious. By assigning a value to each flow that appears suspicious and adding that value to the total concern index of the responsible host, it is possible to identify hosts that are engaged in intrusion activity. When the concern index value of a host exceeds a preset alarm value, an alert is issued and appropriate action can be taken.

A method for the nondestructive testing of pipeline, and internal or external coatings, using guided ultrasonic waves excited from the inside or outside diameter, wherein at least two transducers are employed to send and receive ultrasound, wherein a data normalization scheme is employed to account for transducer variability, and wherein the hardware arrangement has a number of pulser channels and a number of receiver channels for the collection and storage of signals.

A method for the nondestructive inspecting of coated or uncoated pipeline, using ultrasonic guided waves excited on the outer or inner pipe surface, wherein at least one or more transducers are individually or simultaneously excited to generate ultrasound, wherein multiple received signals with different focal spot positions are processed and combined to produce a reduced number of final waveforms that show defect axial positions in the pipe, wherein a data calibration scheme is utilized to adjust velocity variability for all the guided wave modes at different frequencies, and wherein the hardware arrangement has at least one pulser channel and one receiver channel for the collection and storage of signals.

A method for determining the volume of an irregularly shaped body part or body such as a fetus using a 3D ultrasonic image composed of light and dark pixels. A caliper is placed on a portion whose volume is to be determined and a computer having the image, automatically counts every pixel with the same echogenicity in every direction as long as it is continuous with the spot the caliper is in, and wherein the computer means stops counting in any direction where the pixels become significantly more echogenic (dark). The volume of the portion, is determined, based on the counted number of pixels and the magnification of the image; and the calculated volume is used to determine physiological characteristics based on known values such as fetal gestation age.

Systems and methods for analyzing copy number of a target locus, detecting a disease associated with abnormal copy number of a target gene or a carrier thereof.

This invention is a method and apparatus for low-cost detection and alerting of bed-departure, which causes significant stress to caretakers of patients who often wander out of bed as a result of their dementia, Alzheimer's, or other medical conditions. The apparatus comprises a sock embedded with a pressure sensor and a battery-powered microcontroller unit with a radio frequency module. Once the user wanders out of bed and steps onto the floor, the sensor on the sock will immediately detect the pressure caused by his or her body weight and wirelessly trigger an audible sound at a caretaker's monitoring unit, which can be a smart phone or PC. The sensor and the microcontroller unit can be packaged in one assembly to be mounted on an ordinary sock, slipper, or shoe. The apparatus also accurately counts steps and measures the time interval between them.

The invention relates to a method for identifying the lithology of a whole well section. The method comprises the steps of taking out multiple rock core samples from multiple deep positions, and determining the granularity data and the lithology type of each rock core sample; determining the values of multiple types of well logging parameters of the multiple deep positions, and selecting N types of well logging parameters which are increased or decreased with increase in the granularity of the rock core samples, wherein N is more than or equal to 2; according to the lithology types of rock core sample points in the multiple deep positions and the values of N types of characteristic parameters, determining a corresponding relationship between each N-dimensional cell and the lithology type in the N-dimensional space of characteristic parameter coordinates; according to the values of the characteristic parameters and the corresponding relationship of each deep position within the whole well section, determining the representative lithology type of each deep position. According to the method, the advantages of a traditional geological analysis method and a method for identifying the lithology types through logging process are incorporated; the established interactive multi-dimension histogram lithology identification is correct and reliable, particularly applicable for use in the case of fewer rock core data.

The invention is directed to compositions and methods for isolating, detecting, amplifying, and quantitating pathogen-specific nucleic acids in a biological sample. The invention also provides diagnostic kits containing specific amplification primers, and labeled detection probes that specifically bind to the amplification products obtained therefrom. Also disclosed are compositions and methods for the isolation and characterization of nucleic acids that are specific to one or more pathogens, including for example Influenza virus and Mycobacterium tuberculosis, from a wide variety of samples including those of biological, environmental, clinical and/or veterinary origin.

The invention protects a multi-camera calibration method based on the minimum optical path principle and a transparent glass calibration plate and is applied to the fields of visual detection and image measurement. According to the method, the transparent glass plate is utilized to complete calibration of multiple cameras. The whole multi-camera calibration process comprises a first stage, whereinthe visual field of each camera is carefully adjusted to meet the requirement that identical covered regions exist between every two cameras; a second stage, wherein a Zhang Zhengyou calibration method is utilized to obtain internal parameters of the cameras; a third stage, wherein a pin-hole imaging model and a refraction projection model are used to acquire external parameters of the cameras infront of the calibration plate and external parameters of the cameras behind the calibration plate respectively; and a fourth stage, wherein the external parameters of all the cameras are unified under the same coordinate system. Compared with the prior art, by the adoption of the multi-camera calibration method based on the minimum optical path and the transparent glass calibration plate, calibration of multiple cameras in the system can be completed at the same time, and accuracy and reliability are improved.

A method for detection of pipeline vibrations with a measuring instrument connected to a pipeline system through which a medium to be measured flows, the measuring instrument having at least one transducer for detection of an input variable and for output of an output variable and at least one evaluation unit. The method involves detecting the input variable, relaying of an output variable based on the input variable to the evaluation unit, determinating the measured value of the measured variable from the output variable. Monitoring of the operating state of a system is achieved in that the measured variable characterizes the medium located within the pipeline system, that the sampling rate for detection of the input variable is at least twice as high as the frequency of the pipeline vibration and a frequency analysis of the brief fluctuations of the measured variable is conducted.

The invention discloses a method for measuring the dynamic full-surface local strain and the uniformity of a sand tri-axial test sample by utilizing a digital image processing technology and belongs to the technical field of soil tests. The method is implemented based on a small tri-axial testing apparatus and comprises the following steps of utilizing an external high-speed industrial camera to perform a test whole process photographing on the surface of the tri-axial test sample after speckle treatment, and acquiring whole process image data; utilizing a PS to perform pretreatment on a testimage, taking a part of the image from a total field rectangular image of the test sample as a calculation stripe, and utilizing a DIC image processing technology to calculate region data of each calculation block to finally obtain center point actual displacement of each calculation block; calculating a local strain according to the obtained center point actual displacement of each calculation block; and distinguishing the total stain development uniformity of a test sample body in the test process according to each local strain, obtained by calculation, of the test sample body. By adopting the method provided by the invention, adopted equipment and devices are simple, test operation is convenient, interference on the test sample in the test process can be reduced, and various local strains of the test sample can be accurately measured.

The invention discloses a line selection method for a single-phase earth fault line of a small current grounding system, and belongs to the electric power cable fault on-line monitoring field. The line selection method comprises a plurality of cables in the same bus with a small current grounding mode, and is characterized in that: transient current signals flowing through each cable outgoing line metal shielding layer grounding line are monitored and recorded through a high speed collection method, the transient current signals are generated by a fault loop when the single-phase grounding fault of the small current grounding system happens; and the fault line is selected by identifying the directions of wave heads of the transient current signals. The method compares the directions of the wave heads of grounding line current traveling waves of all the cables, and distinguishes a fault cable and a non-fault cable. In comparison with other small current grounding line selection methods at present, the accuracy of the line selection is high, and the multi-selection or missing report condition can be effectively avoided.

A method for the early diagnosing of selected adenocarcinomas in a human comprising the steps of removing a bodily sample from the human, and assaying the bodily sample for elevated expression of a specific gene. The gene being assayed for in the bodily sample is the TGFB-4 gene (hereinafter referred to as the endometrial bleeding associated factor (ebaf) gene. The bodily sample can be tissue from a specific organ in the body, or a blood sample. Increased levels of ebaf in the sample relative to basal levels may be indicative of a mucinous adenocarcinoma of the colon or ovaries, or an adenocarcinoma of the testis.

The invention relates to an SNP (single nucleotide polymorphism) marker correlated with the characteristic of short stature of Chinese domestic horses. The SNP marker is located in the 18,101,000th base pair of the chromosome 8 of a horse. The SNP marker correlated with the characteristic of short stature of Chinese domestic horses and the application of the SNP marker have the advantages as follows: (1) the provided molecular marker is free from limits of age, sex and the like of the Chinese domestic horses and can be used for early-stage selection of the Chinese domestic horses, even the Chinese domestic horses that are just born can be accurately screened, and the breeding progress of the superior pony variety in Chinese domestic horses can be remarkably promoted; (2) a method for detecting the SNP of TBX3 genes of the Chinese domestic horses is accurate, reliable and simple and convenient to operate; (3) detection of SNP sites of the TBX3 genes of the Chinese domestic horses provides a scientific basis for marker assisted selection of the height of the Chinese domestic horses.

A method for identifying a fault associated with an individual cylinder of a multicylinder combustion engine, comprising the steps of: accelerating the combustion engine to a first engine speed (L1); interrupting the fuel supply to all cylinders except the individual cylinder, which receives a predetermined amount of fuel supply, when the first engine speed is reached; and counting the time it takes for the speed of the combustion engine to decrease from either the first engine speed or a second engine speed (L2), which is lower than the first engine speed, down to a third engine speed (L3). A computer, a computer program and a computer program product which use the method.

A solid state power control scheme is provided with a ground fault interrupt function. Essentially, if a neutral wire is associated with the power supply, the current is sensed in that neutral wire. The sensed neutral wire current is subtracted from a summed current on the power supply lines. If that result is greater than a predetermined limit, then the ground fault function is actuated and the circuit is opened. For power supplies, both those with and without neutral wires, the current is sensed by a shunt resistor on the power supply line.

A method of validating a media item, comprising: for each of a plurality of sensors that sense a media item, determining a respective validation score indicating a likelihood that the sensed media item is valid; and determining if the media item is valid responsive to the plurality of validation scores. Apparatus for validating a media item and a document processing module are also provided.

The invention discloses a gas chromatography-mass spectrometry detection method for nonylphenol polyoxyethylene ether in a toilet cleaner, relating to the fields of detection and analysis. The gas chromatography-mass spectrometry detection method comprises the following steps of: dissolving a sample, performing chemical treatment on the sample solution, purifying the sample solution by virtue of a solid-phase extraction column, performing gas chromatography-mass spectrometry detection, and comparing with a standard curve to obtain the concentration value of nonylphenol polyoxyethylene ether. The gas chromatography-mass spectrometry detection method disclosed by the invention is convenient to operate, low in cost, good in reproducibility, accurate in nature determination, and capable of rapidly analysing the content of nonylphenol polyoxyethylene ether in the toilet cleaner without a need of an expensive liquid chromatography-mass spectrometry instrument. Compared with the existing test technologies, the gas chromatography-mass spectrometry detection method disclosed by the invention has no need of an expensive liquid chromatography-mass spectrometry instrument, and is accurate and reliable in result during a process of testing the concentration of nonylphenol polyoxyethylene ether in the toilet cleaner.

The invention discloses a method for detecting a jinnan cattle IGFIR gene CNV mark and application of the method. The method comprises the following steps: taking an ear tissue whole-genome DNA of a jinnan cattle as a template; utilizing a pair of specific primers IGF1R-CNV to amplify a copy number variable region of the cattle IGF1R gene; utilizing a pair of specific primers BTF3-CNV to amplify acattle BTF3 gene segment as a control group; and utilizing a 2-delta Ct method to calculate copy number of the individual. The method provided by the invention lays foundation for establishing correlation between the jinnan cattle IGF1R gene copy number and growth traits; copy number variation and the growth traits are subjected to related analysis, so that jinnan cattle molecular marker-assistedselection work is facilitated. The method is simple, is quick and is convenient to popularize and apply.

The invention discloses a nuclear reactor control rod driving mechanism monitoring and management system and method. The system comprises sensors (1 and 2), a data acquisition module (3), a data storage module (4), a local upper computer (5) and a server computer (6); the local upper computer (4) communicates with an embedded controller, completes data preprocessing and feature value extraction, and stores and manages the data in the two modes of an offline file and a local database; and the server computer (5) communicates with the local upper computer (4), calls standardized signal data entries, and completes characteristic value trend statistics and residual life calculation. A small number of sensors are additionally arranged on the basis of existing maturely-applied rod control rod position and control rod driving mechanism equipment of a nuclear power plant, and a feasible, accurate and reliable state monitoring and health management method and system meeting engineering requirements are provided for four component objects.

The invention discloses a method for determining the contents of six components in a mango cough-relieving tablet by HPLC and QSMA methods. The HPLC method with a Phenomenex Gemini C18 column (4.6mm*250 mm, 5 mu m) as the chromatographic column, the acetonitrile (B)-0.1% phosphoric acid aqueous solution (A) as the mobile phase, with gradient elution, and at the flow rate of 1.0 mL/min, the detection wavelength of 258nm, and the column temperature of 30 DEG C is adopted. According to the QSMA method, gallic acid is used as an internal reference substance, relative correction factors (RCF) of protocatechuic acid, mangiferin, homomangiferin, hyperoside and isoquercitrin are established, the contents of the same are calculated via the RCFs, amd determining values are compared with determiningresults via an external standard method for analysis. The determining result of the QSMA method has no significant difference (P is greater than 0.05) from that of the external standard method, the RCFs are high in repeatability, the HPLC and QSMA methods can be used to determine contents of the six components in the mango cough-relieving tablet, and the method of the invention is accurate, reliable, highly repeatable and can be used for quality control of the mango cough-relieving tablet.