59results about How to "Robust and accurate" patented technology

A system for predicting blood glucose values in a patient includes a remote wireless non-invasive spectral device, the remote wireless non-invasive spectral device generating a spectral scan of a body part of the patient. Also included are a remote invasive device and a central processing device. The remote invasive device generates a constituent value for the patient, while the central processing device predicts a blood glucose value for the patient based upon the spectral scan and the constituent value.

Methods and nodes are provided for transmission of information, over at least one antenna port, in a subframe, which information is received by a receiver in a wireless communication system. Demodulation of the information entity by the receiver is enabled by also transmitting a Demodulation Reference Signal, DM-RS, comprising a DM-RS pattern, wherein positions in the DM-RS pattern are associated with at least one antenna port for transmission of the information entity. The method includes defining, for at least one subframe, a set of at least two distinct DM-RS patterns, assigning one DM-RS pattern, from the defined set of DM-RS patterns, to the receiver, and transmitting the information entity on the at least one antenna port associated with the assigned DM-RS pattern.

Disclosed are a system, method, and program storage device implementing the method, of data fusion, wherein the method comprises determining pre-launch data affecting a flight of a self-sensing air-bursting ballistic projectile, the projectile comprising a plurality of independent data sensors; predicting a trajectory path of the projectile based on a target location of the projectile; calculating trajectory path errors based on the predicted trajectory path; generating in-flight data from each of the data sensors; combining the in-flight data into a single time-series output using a fusion filter; tracking a trajectory position of the projectile based on the single time-series output, pre-launch data, and the trajectory path errors; comparing the tracked trajectory path with the predicted trajectory path; analyzing the in-flight data to gauge successful navigation of the projectile to the target location; and self-guiding the projectile to the target location based on the trajectory position.

Apparatus and a method utilizing correlation interferometer direction finding for determining the azimuth and elevation to an aircraft at long range and flying at low altitudes above water with a transmitting radar while resolving multipath signals. The signals from the radar are received both directly and reflected from the surface of the water using horizontally polarized and vertically polarized antenna arrays, are digitized and are stored in separate covariant matrices. Eigenvalues for the eigenvectors of the matrices processed on signal samples recorded on horizontally polarized X arrays are compared to the eigenvalues for the eigenvectors of the covariance matrices processed on signal samples recorded on vertically polarized X arrays. Incident field polarization is associated with the antenna array measurements that yield the strongest eigenvalue. The eigenvector and eigenvalues for the strongest signal are selected and used for subsequent signal processing. An initial global search assuming mirror sea-state reflection conditions using the signal eigenvector having the strongest eigenvalue is performed to yield an approximate elevation α and azimuth β to the aircraft. The approximate values are then used as the starting point for a subsequent conjugate gradient search to determine accurate elevation α and azimuth β to the aircraft.

Apparatus and methods for employing electrical properties of water to indicate the level of filtered water in a filtered water container. The container is fitted with a hopper that holds unfiltered water. The hopper is fitted at its base with a removable and replaceable filter cartridge. Water is filtered by draining through the filter medium contained in the filter cartridge into the lower portion of the container. The water level in the filtered water container is monitored by means of one or more water level detector strips in the hopper or in the lower portion of the filtered water container. The detector strips are in electrical communication with a detection circuit and a control unit. The control unit uses the detection strips to monitor water level and uses such data to track filtered water consumption and to determine when the filter cartridge should be replaced.

An electronic device is provided which comprises circuitry for DC-DC conversion configured to switch an inductor current through an inductor using slope compensation, wherein the circuitry comprises a slope compensation stage configured to generate a slope compensation signal as a function of an switching frequency of the DC-DC conversion and an input voltage of the DC-DC converter.

A method for identification of caries, executed at least in part on data processing hardware, obtains an original digital tooth image that has a plurality of color channels and generates an adjusted image by adjusting intensity values of the original digital tooth image to a range between a minimum value and a maximum value, wherein the adjusted image has at least a green channel image Iwgreen, a red channel image Iwred, and a blue channel image Iwblue. One or more tooth regions are segmented from gum and background regions within the adjusted image according to a relationship between two or more of the images Iwgreen, Iwred, and Iwblue to each other. One or more caries lesions is identified according to pixel intensity values from within the one or more segmented tooth regions, and the one or more tooth regions and the displayed and identified caries regions are highlighted.

Apparatus and a method utilizing correlation interferometer direction finding for determining the azimuth and elevation to an aircraft at long range and flying at low altitudes above water with a transmitting radar while resolving multipath signals. The signals from the radar are received both directly and reflected from the surface of the water using horizontally polarized and vertically polarized antenna arrays, are digitized and are stored in separate covariant matrices. Eigenvalues for the eigenvectors of the matrices processed on signal samples recorded on horizontally polarized X arrays are compared to the eigenvalues for the eigenvectors of the covariance matrices processed on signal samples recorded on vertically polarized X arrays. Incident field polarization is associated with the antenna array measurements that yield the strongest eigenvalue. The eigenvector and eigenvalues for the strongest signal are selected and used for subsequent signal processing. An initial global search assuming mirror sea-state reflection conditions using the signal eigenvector having the strongest eigenvalue is performed to yield an approximate elevation α and azimuth β to the aircraft. The approximate values are then used as the starting point for a subsequent conjugate gradient search to determine accurate elevation α and azimuth β to the aircraft.

A system and method for measuring one or more light-absorption related blood analyte concentration parameters of a mammalian subject, is disclosed. In some embodiments, the system comprises: a) a photoplethysmography (PPG) device configured to effect a PPG measurement by illuminating skin of the subject with at least two distinct wavelengths of light and determining relative absorbance at each of the wavelengths; b) a dynamic light scattering measurement (DLS) device configured to effect a DLS measurement of the subject to rheologically measure a pulse parameter of the subject; and c) electronic circuitry configured to: i) temporally correlating the results of the PPG and DLS measurements; and ii) accordance with the temporal correlation between the PPG and DLS measurements, assessing value(s) of the one or more light-absorption related blood analyte concentration parameter(s).

Systems and methods for identifying populations of events in a multi-dimensional data set are described. The populations may, for example, be sets or clusters of data representing different white blood cell components in sample processed by a flow cytometer. The methods use a library consisting of one or more one finite mixture models, each model representing multi-dimensional Gaussian probability distributions with a density function for each population of events expected in the data set. The methods further use an expert knowledge set including one or more data transformations and one or more logical statements. The transformations and logical statements encode a priori expectations as to the populations of events in the data set. The methods further use program code by which a computer may operate on the data, a finite mixture model selected from the library, and the expert knowledge set to thereby identify populations of events in the data set.

Apparatus and methods for employing electrical properties of water to indicate the level of filtered water in a filtered water container. The container is fitted with a hopper that holds unfiltered water. The hopper is fitted at its base with a removable and replaceable filter cartridge. Water is filtered by draining through the filter medium contained in the filter cartridge into the lower portion of the container. The water level in the filtered water container is monitored by means of one or more water level detector strips in the hopper or in the lower portion of the filtered water container. The detector strips are in electrical communication with a detection circuit and a control unit. The control unit uses the detection strips to monitor water level and uses such data to track filtered water consumption and to determine when the filter cartridge should be replaced.

A method for identification of caries, executed at least in part on data processing hardware, obtains an original digital tooth image that has a plurality of color channels and generates an adjusted image by adjusting intensity values of the original digital tooth image to a range between a minimum value and a maximum value, wherein the adjusted image has at least a green channel image Iwgreen, a red channel image Iwred, and a blue channel image Iwblue. One or more tooth regions are segmented from gum and background regions within the adjusted image according to a relationship between two or more of the images Iwgreen, Iwred, and Iwblue to each other. One or more caries lesions is identified according to pixel intensity values from within the one or more segmented tooth regions, and the one or more tooth regions and the displayed and identified caries regions are highlighted.

A high-resolution Subspace-Least Mean Square (S-LMS) method for harmonic and interharmonic measurement in power systems is provided. The eigenvector corresponding to the smallest eigenvalue is used to calculate the frequencies of the signal, and the least mean square method is used to estimate the amplitude and phase angle of harmonic and interharmonic components based on the computed frequencies and time domain measurements of the signal. Three schemes, namely sparsity, catch-and-pinpoint, and hybrid are presented. The S-LMS method provides accurate phasor, harmonic and interharmonic measurements for power system monitoring. The speed, accuracy, and resilience of the S-LMS method can be further increased by each of the three schemes. The method has a wide range of applications in power quality analyzers, synchronized phasor measurement, situational awareness, dynamic equivalencing, and smart meters.

The invention relates to an exhaust nozzle for a bypass turbomachine, the nozzle comprising a central body, a primary cowl surrounding the central body to define a primary channel, and a secondary cowl surrounding the primary cowl to define a secondary annular channel, the secondary cowl comprising a stationary portion and a movable portion disposed to extend the stationary portion and capable of moving longitudinally upstream and downstream relative to the stationary portion and relative to the primary cowl so as to vary the exhaust section and / or the throat section of the nozzle, the stationary portion of the secondary cowl presenting a plurality of spaced-apart repetitive patterns disposed extending its trailing edge, and the movable portion of the secondary cowl including in its outside surface a plurality of indentations of shapes complementary to the patterns of the stationary portion.

The present disclosures relates to a method of detecting, classifying, and counting dots in an image of a tissue specimen comprising detecting dots in an image of the tissue sample that meet criteria for absorbance strength, black unmixed image channel strength, red unmixed image channel strength, and a difference of Gaussian threshold, wherein the detected dots correspond to in situ hybridization signals in the tissue samples; classifying the detected dots as belonging to a black in situ hybridization signal or to a red in situ hybridization signal; and calculating a ratio of those dots belonging to the black in situ hybridization signal and those belonging to the red in situ hybridization signal.

A seismic data analysis method including: loading at least one seismic data volume to a database, performing unbiased sampling on a portion of the seismic data volume to obtain a plurality of unbiased sampling traces, selecting a plurality of trace positions from the unbiased sampling traces, computing a plurality of samples, identifying a first set of wavelets using the samples, computing at least one genotype, creating at least two subpopulations by applying the genotype to the seismic data volume, analyzing the subpopulations for fitness to identify at least one fit population, forming a merged subpopulation by mapping similarities in the first set of wavelets, computing a second sample by identifying a second set of wavelets, creating a mutated subpopulation by applying the genotype to the second sample, and inserting the mutated subpopulation into the seismic data volume to create a geopopulation that defines geological parameters of a subsurface formation.

Timing information is transmitted over a network by sending time-stamped packets between a transmitter and receiver. The time-stamped packets are used to compute an estimate of the frequency deviation between the transmitter clock and the receiver clock. The local receiver clock is periodically updated to match the transmitter clock based on the estimate, which is preferably a least squares estimate. A multiple window approach is employed to increase update speed.

A capacitive sensor and a method of making it with a substrate having a diaphragm forming a first plate of a capacitor; a second fixed plate of the capacitor spaced from the diaphragm and defining a predetermined dielectric gap; a plurality of conductor elements interconnecting the substrate and fixed plate; and an edge lock supporting the fixed plate and the substrate relative to each other for maintaining the dimension of the defined gap independent of the conductor elements.

A differential pressure sensor for measuring a pressure difference between two high-pressure environments is comprised of a sensor block including internal, oil-filled channels leading to an internally positioned differential pressure sensor element. Two process diaphragms are provided for transferring pressure from the high-pressure environments for isolating two distinct internal oil channels from the high-pressure environments. In order to achieve small internal oil volumes in the sensor block, additionally two separating discs, which initially separate between the two internal oil channels, are positioned in fluid communication with the high-pressure environments in order to block for the pressure from the high-pressure environments against the oil channels “from behind.” The separating discs bear against abutment faces having small openings into the internal oil channels. The separating discs are preferably given a pre-tension, and the abutment faces are then shaped correspondingly having a slightly convex shape. Preferably, separating discs with no corrugations are used.

Systems and methods for determining compression device degradation of an engine of a rail vehicle are provided. In one embodiment, a rail vehicle system includes an engine, an air-intake passage coupled to the engine, a compression device including a compressor positioned along the air-intake passage, a barometric air pressure sensor for measuring a barometric air pressure upstream of the compressor, a manifold air pressure sensor for measuring a manifold air pressure downstream of the compressor, and a controller configured to adjust a rail vehicle operating parameter responsive to a determination of compression device degradation based on a negative pressure differential between the manifold air pressure and the barometric air pressure during a designated operating condition.

The invention relates to statistical methods for fitting a mathematical model of the interaction of signals, such as optical signals, with tissue to detected signals or data related to the interaction. In particular it relates to statistical methods for fitting a mathematical model of the interaction of optical signals with tissue to actual signals, such as interferometric signals related to data optical scattering in tissue and their relationship to glucose concentration. It also relates to statistical methods for fitting a mathematical model of the interaction of optical signals with tissue to data such as the spectral distribution values of optical signals absorbed or scattered by tissue and their relationship to glucose concentration. The invention provides a practical non-invasive glucose measurement method and system. The invention also provides a measurement method and system that performs well in low signal-to-noise environments.

Embodiments of the invention include a wireless vehicle detection systems and associated methods with extended range and battery life. The wireless vehicle detection system can include a plurality of sensor pods in communication with an access point without repeaters. Embodiments of the sensor pod can include a vehicle detector controller adapted to determine the presence of vehicles and a communication controller connected to the vehicle detector and adapted to transmit data 300 feet or more to an access point, which in turns communicates with the base station. To extend the battery life of the sensor pod, the sensor pod can be adapted to detect received communication signal strength and adjust transmitting power based upon said strength to thereby conserve power. Embodiments of the sensor pod can also include a battery connected in parallel to an HLC capacitor to further extend the life of the battery.

Embodiments of the invention include a wireless vehicle detection systems and associated methods with extended range and battery life. The wireless vehicle detection system can include a plurality of sensor pods in communication with an access point without repeaters. Embodiments of the sensor pod can include a vehicle detector controller adapted to determine the presence of vehicles and a communication controller connected to the vehicle detector and adapted to transmit data 300 feet or more to an access point, which in turns communicates with the base station. To extend the battery life of the sensor pod, the sensor pod can be adapted to detect received communication signal strength and adjust transmitting power based upon said strength to thereby conserve power. Embodiments of the sensor pod can also include a battery connected in parallel to an HLC capacitor to further extend the life of the battery.

A method and apparatus for estimating a location of one or more active sites on a target biopolymer molecular subset. The collective results for the likelihood of molecular combination between a collection of molecular subsets and the target biopolymer molecular subset are analyzed. The computational method utilizes an electrostatic affinity score for different configurations between the target biopolymer molecular subset and the molecular subsets of the collection. Favorable configurations are determined based on the affinity scores. These favorable configurations are then used to determine interaction loci, which are associated with regions of the target biopolymer molecular subset having a high likelihood of molecular combination. The locations of the active sites are then estimated from the interaction loci.

A multimodal biometric identification system captures and processes images of both the iris and the retina for biometric identification. Another multimodal ocular system captures and processes images of the iris and / or the from both eyes of a subject. Biometrics based on data provided by these systems are more accurate and robust than using biometrics that include data from only the iris or only the retina from a single eye. An exemplary embodiment emits photons to the iris and the retina of both eyes, an iris image sensor that captures an image of the iris when the iris reflects the emitted light, a retina image sensor that captures an image of the retina when the retina reflects the emitted light, and a controller that controls the iris and the retina illumination sources, where the captured image of the iris and the captured image of the retina contain biometric data.

An electronic device is provided which comprises circuitry for DC-DC conversion configured to switch an inductor current through an inductor using slope compensation, wherein the circuitry comprises a slope compensation stage configured to generate a slope compensation signal as a function of an switching frequency of the DC-DC conversion and an input voltage of the DC-DC converter.

A high-voltage disconnecting circuit breaker includes a first and a second contact, a mechanism provided for moving the contacts to a first mutual distance, and a mechanism provided for quenching any arc appearing between the contacts during the movement to thereby provide the functionality of a high-voltage circuit breaker, wherein the mechanism provided for moving is further provided for moving the contacts to a second mutual distance larger than the first mutual distance after quenching of any arc to thereby provide the voltage withstand functionality of a high-voltage disconnector.

A capacitive sensor and a method of making it with a substrate having a diaphragm forming a first plate of a capacitor; a second fixed plate of the capacitor spaced from the diaphragm and defining a predetermined dielectric gap; a plurality of conductor elements interconnecting the substrate and fixed plate; and an edge lock supporting the fixed plate and the substrate relative to each other for maintaining the dimension of the defined gap independent of the conductor elements.