38 results about "Independent measure" patented technology

Security scanning devices based on electrical tomography, including tomography systems based on the measurement of capacitance (ECT) and electromagnetic tomography (EMT), in combination with knowledge-based image analysis and understanding. Each device includes a sensing head or transducer, sensing electronics, image reconstruction and image analysis microprocessor, a display unit and accompanying software for identifying dangerous materials and items. The security scanning devices are employed for obtaining multiple independent measurements and enable implementation of data fusion to combine the complementary sensitivity of ECT and EMT to different material properties, while providing architecture to implement image knowledge bases, which characterize objects, whose image attributes are acquired from multiple sensors.

A method for developing and validating a quality assessment for a test is provided. A test method is also provided, which assesses the accuracy of a test. The methods include performing a behavioral test on a subject to measure a psychometric quantity, measuring one or more quality indicators, the quality indicators being any variables that are correlated with test accuracy, obtaining an independent measure of test accuracy, and deriving a predictive formula for estimating test accuracy from the quality indicators.

A computer-implemented method of analyzing a dataset of pharmacovigilance data, includes determining a sample size-independent measure of association between two conditions of interest in the dataset of pharmacovigilance data; using a hypergeometric distribution to determine a measure of statistical unexpectedness between the conditions of interest in said dataset, wherein the distribution is based on an urn model under a hypothesis that the conditions are statistically independent; and displaying the measure of association with the measure of the statistical unexpectedness to identify a significant association between conditions of interest.

The invention relates to a direct image reconstruction method based on the capacitance tomography of a round sensor. The method comprises the following operation steps: 1. N electrodes of an ECT sensoThe invention relates to a direct image reconstruction method based on the capacitance tomography of a round sensor. The method comprises the following operation steps: 1. N electrodes of an ECT sensor, which are arranged on the same cross section, are counterclockwise marked as electrodes i (i is larger than or equal to 1 and is smaller than or equal to N) and a traditional 1-by-1 excitation measr, which are arranged on the same cross section, are counterclockwise marked as electrodes i (i is larger than or equal to 1 and is smaller than or equal to N) and a traditional 1-by-1 excitation measuring mode is adopted, i.e. a scanning process comprises N-1 actions; 2. measured capacitance values are firstly pre-treated by linear transform to obtain N*(N-1) / 2 independent measured charge changeuring mode is adopted, i.e. a scanning process comprises N-1 actions; 2. measured capacitance values are firstly pre-treated by linear transform to obtain N*(N-1) / 2 independent measured charge changevalues; 3. the scattering transformation t(s) of discrete electrodes is calculated; and 4. the specific inductive capacity variation of any point is rebuilt. The invention aims at a round measuring revalues; 3. the scattering transformation t(s) of discrete electrodes is calculated; and 4. the specific inductive capacity variation of any point is rebuilt. The invention aims at a round measuring region, overcomes the defects that a traditional algorithm needs to calculate a sensitivity matrix and can not independently calculate the rebuilding result of a subregion, directly rebuilds images accogion, overcomes the defects that a traditional algorithm needs to calculate a sensitivity matrix and can not independently calculate the rebuilding result of a subregion, directly rebuilds images according to capacitance measuring values and can directly rebuild images in the subregion. The method has high real-time performance, can be popularized to ECT and has important practical values and applrding to capacitance measuring values and can directly rebuild images in the subregion. The method has high real-time performance, can be popularized to ECT and has important practical values and application prospects.ication prospects.

The invention relates to a measuring apparatus for cylinders, rolls and similar elements to be measured during the grinding operation, equipped with detection systems of the geometrical and dimensional characteristics (for example roundness, shape, diameter, etc.) and / or structural characteristics (for example, the presence of cracks and work hardening, measurement of the hardness, etc.) and / or surface characteristics (for example roughness, states of surface tension, etc.) The measurement of the geometrical characteristicsis performed with four detection points .

The present invention provides a method and an apparatus for using power of a pilot channel to control an output power from a transmitter, such as a base station transmitting spread spectrum signals. In one embodiment, a method for controlling an output power from a transmitter associated with a communication node (e.g., Node B) in a wireless network, such as a digital cellular network is provided. The method comprises extracting an indication of a pilot channel power from a portion of an output signal of the transmitter and controlling a control loop having one or more control devices in the transmitter based on the indication of a pilot channel power such that the pilot channel power stays substantially constant over a period of time. In this manner, using a closed power loop controller, a transmitter may overcome the problem of measuring the power of a non-constant spread spectrum signal and a traffic independent measure may control a cell size. Compared to a gain control loop, a relatively more precise control of the cell size may be provided using a significantly less measurement components.