52results about How to "Minimise measure" patented technology

A method and an apparatus measure blood oxygenation in a subject. A first signal source applies a first input signal during a first time interval. A second signal source applies a second input signal during a second time interval. A detector detects a first parametric signal responsive to the first input signal passing through a portion of the subject having blood therein. The detector also detects a second parametric signal responsive to the second input signal passing through the portion of the subject. The detector generates a detector output signal responsive to the first and second parametric signals. A signal processor receives the detector output signal and demodulates the detector output signal by applying a first demodulation signal to a signal responsive to the detector output signal to generate a first output signal responsive to the first parametric signal. The signal processor applies a second demodulation signal to the signal responsive to the detector output signal to generate a second output signal responsive to the second parametric signal. The first demodulation signal and the second demodulation signal both include at least a first component having a first frequency and a first amplitude and a second component having a second frequency and a second amplitude. The second frequency is a harmonic of the first frequency. The second amplitude is related to the first amplitude to minimize crosstalk from the first parametric signal to the second output signal and to minimize crosstalk from the second parametric signal to the first output signal.

A method, apparatus, computer readable media and signal embodied in a carrier wave for controlling the rate at which data packets are transmitted from a source responsive to acknowledgement signals in a packet network involves adjusting an acknowledgement rate at which acknowledgement signals are sent to the source, in response to the difference between target queue occupancy and measured queue occupancy of a queue buffer in which data packets from the source are received.

The present teachings generally relate to probes and probes sets for detecting analytes. The teachings also relates to compositions, methods, and kits for assembling probes comprising at least one coded molecular tag.

A model for analyzing a cashflow sensitive instrument is described that uses an optimization model of a data set associated with a cashflow sensitive instrument, which optimization model is based at least in part on an interest rate model and a cash-flow model. The interest rate model is at least partially based on at least one random variable used to simulate an underlying distribution on at least one interest rate. A model output is then generated based on the optimization model. The model outputs all optimal cashflow solution for the cashflow sensitive instrument(s) that at least partially optimizes factors of risk and/or cost. Related methods, programs and systems are also provided.

An apparatus and a computer-implemented method are provided for determining a location in a target image (T) of a site on a surface of a physical object using two or more reference images (I₁, I₂) of said physical object that have been obtained with a reference imaging device. Each of said two or more reference images includes said site on the surface of the physical object and was obtained with the reference imaging device having a different position and/or orientation relative to said physical object. The target image is obtained by a target imaging device and includes the site on the surface of the physical object. For each reference image, a set of feature mappings from the reference image to the target image is used to determine the epipolar geometry between the reference image and the target image, and a projection of the site from the reference image onto the target image is calculated from said epipolar geometry. The location in the target image of the site on the surface of the physical object is determined from the calculated epipolar projections for the two or more reference images.

The present invention generally relates to the detection of analytes, particularly biomolecules in samples. The invention also relates to compositions, methods, and kits for detecting the presence of analytes, typically in multiplex detection formats. The invention also relates to methods for determining the presence of at least one analyte in a sample, the methods employing employ single molecule detection techniques to individually detect at least one molecular complex or at least part of a molecular complex.

Methods and kits for isolating nucleic acids from a sample, typically a biological sample are disclosed. In certain embodiments, the methods and kits of the invention comprise at least one protease and at least one solid phase. In certain embodiments, the methods and kits of the invention comprise at least one chaotrope and at least one solid phase. In certain embodiments, the inventive methods and kits further comprise at least one chaotrope, at least one zwitterionic compound, at least one cationic detergent, at least one non-ionic detergent, or combinations thereof.

Coherent motion regions extend in time as well as space, enforcing consistency in detected objects over long time periods and making the algorithm robust to noisy or short point tracks. As a result of enforcing the constraint that selected coherent motion regions contain disjoint sets of tracks defined in a three-dimensional space including a time dimension. An algorithm operates directly on raw, unconditioned low-level feature point tracks, and minimizes a global measure of the coherent motion regions. At least one discrete moving object is identified in a time series of video images based on the trajectory similarity factors, which is a measure of a maximum distance between a pair of feature point tracks.

A method for registering digitized images using Markov Random Fields (MRFs) includes providing a source image f and a target image g, defining a deformation grid of

control points, defining a coordinate transformation as where x is a point on the source image, p is a position vector of control point p, d_p is a displacement vector for each control point, u_p is a label for point p associated with displacement d_p, and η( ) is a weighting function for the displacement vector, defining an MRF energy functional to be minimized by T as

wherein |G| is a number of control points, |E| is a number of pairs of neighboring control points on a neighborhood system, t is an iteration counter, and associating the MRF with a primary linear program and solving the primary linear program using a fast primal-dual algorithm to yield a coordinate transformation that minimizes the energy functional.

A curve may be reshaped by determining new locations for its control points that minimize some measure of the change in the curve (typically, the “energy” of the change), while meeting the specified editing constraints. For example, a designer or other user may indicate an editing constraint by selecting a point anywhere on a curve and moving it to a new location. In response, the unconstrained control points may be moved automatically and simultaneously to optimal new locations. The resulting change in the curve may be aesthetically pleasing and satisfy the editing constraints. This curve editing technique may allow designers to be more productive by providing predictable and intuitive results while enabling curves to be directly manipulated.

A system and method for choosing non-continual jobs to run in a stream-based distributed computer system includes determining a total amount of resources to be consumed by non-continual jobs. A priority threshold is determined above which jobs will be accepted, below which jobs will be rejected. Overall penalties are minimized relative to the priority threshold based on estimated completion times of the jobs. System constraints are applied to ensure that jobs meet set criteria such that a plurality of non-continual jobs are scheduled which consider the system constraints and minimize overall penalties using available resources.

To prevent the battery of a solar charged device from discharge when insufficient solar radiation is present, a control circuit is provided to disable the charging circuits under those conditions. A current load is applied to the output of the solar cell, and the level of power drawn by this load from the solar cell is measured. Control circuits disable the charging circuits of the device when the signal from the current monitor indicates that insufficient solar power is detected. The monitor current load should be such that the power drawn by it should be at least of the same order as the power required by the charging circuitry for its quiescent operation. A series switch may be used so that current is drawn through the load only when solar output is sufficient to enable charging. Alternatively, a periodically pulsed switch may be used to limit the load current.

A method and a system are disclosed for determining a hierarchical clustering for a group comprising a plurality of items. The method comprises providing an indication of a similarity matrix for a plurality of items; generating an optimization problem for determining a list of at least one permutation of items in the similarity matrix such that the similarity matrix is quasi-block diagonalized with the at least one permutation of items; transmitting an indication of the optimization problem to a given optimization oracle; obtaining an indication of a solution to the optimization problem from the given optimization oracle; reordering the similarity matrix using the list of at least one permutation of items; creating a hierarchical clustering tree using the reordered similarity matrix wherein the dividing of a node comprising a given number of items into two clusters comprises selecting a submatrix of the reordered similarity matrix associated with the given number of items, evaluating possible split points, choosing a given split point according to a criterion and generating the two clusters using the chosen split point; and providing an indication of the hierarchical clustering tree.

The present invention relates to a system to transmit vital signals from a moving human body in the presence of dynamic external disturbance and to compensate for artifacts thereof. More specifically, it relates to a system to compensate for artifacts caused by external noise during measurement of vital signals, and to display index of vibration on the monitoring system through interpretation of the vibration signals which affect the physiological state of the body and the measurement of vital signals, due to external disturbance factors, when noise from external disturbances such as vibration of a moving ambulance vehicle, vibration of a remote transmitting diagnostic device attached to the patient, or movement of the patient, is mixed into the transmitted signals. The present invention provides a start code, a data code, a degree of vibration and movement level, a three axis acceleration value and signals of three axis acceleration and measured vital signals. Thus it can improve the accuracy of measurement of vital signals (ECG, NiBP, SPO2, TEMPERATURE, Respiration) under adverse conditions with much vibration such as in moving vehicles. Furthermore, as the present invention can be attached to conventional vital signals measurement modules on the patient through a simple interface part, it can minimize inaccuracy due to vibration and dynamic disturbance in measurement of vital signals during transport of the patient by vehicle or otherwise. Furthermore, the present invention can compensate for artifacts caused by external noise during measurement of vital signals, and display index of vibration on the monitoring system through interpretation of the vibration signals which affect the physiological state of the body and the measurement of vital signals, due to external disturbance factors, when noise from external disturbances such as vibration of a moving ambulance vehicle, vibration of a remote transmitting diagnostic device attached to the patient, or movement of the patient, is mixed into the transmitted signals.

A method and system for determining a concentration level of NO_x in an exhaust stream from a combustion source. The method comprises capturing sample gas from the exhaust stream using a sampling device. NO₂ in the sample gas is converted to NO by passing the sample gas through a catalytic NO₂ converter. The method also comprises removing water from the sample gas by passing the sample gas through a dryer and determining a sample gas NO concentration level. The step of converting NO₂ is performed at a temperature above the dew point temperature of the sample gas.

A system for detecting and locating illicit cellular telephone use within a facility includes an array of radio frequency (RF) receivers, each receiver being placed in a predetermined location in the facility, and a central server, the receivers being in electrical communication with the central server. The server commands a group or groups of receivers to tune to a frequency of interest and to perform detailed sample rate measurements of the RF signal level received at the receivers. The array of receivers is organized into a plurality of measurement areas covering widely separated areas of the facility or different buildings of the facility, and the plurality of receivers of a measurement area is organized into a plurality of measurement groups covering areas of approximately uniform RF propagation conditions. Each receiver scans a frequency band of interest non-synchronously and independently of the other receivers in the array. Also, each receiver is preferably a direct-conversion receiver.

An electrochemical cell for electrolytically contacting and electrochemically inspecting surfaces which makes electrolytic contact with the surface through a body utilizing capillary action. The capillary force between surface and body utilizing capillary action prevents the electrolyte from escaping from the cell without the use of a sealing ring. The body utilizing capillary action allows the electrolyte to flow from an open porous container and wet the surface when the electrochemical cell contacts the surface. Escape of material from the open cell is prevented by the capillary action of the container and of the tip when the electrochemical cell is lifted from the surface. The electrochemical cell is independent of the force of gravity and enables measurements to be made on surfaces of any orientation. The electrochemical cell may be used to perform a multiplicity of electrochemical investigations and processes. The electrochemical cell may be moved over the surface continuously, thereby allowing electrochemical investigations or processes to be performed with lateral resolution. Due to the use of a maintenance-free reference electrode, the electrochemical cell may prefabricated commercially in complete form and stored for extended periods of time after closing.

A generator (6) directs microwave signals to a waveguide (1) having a linear array of slots (2), and the signals are received by measuring device (5). The local permittivity or moisture content of material adjacent the waveguide (1), such as a stack of timber, may be determined at each slot (2) via regression analysis. The total permittivity or moisture may be determined by averaging measurements obtained for both transmission directions of the waveguide (1). The apparatus may be used for controlling drying parameters, such as drying time, for the material.