Abstract: It is provided that pull-down resistors (R1 to Rn-1) which are respectively connected in parallel to blocks (CB1 to CBn?1) except for a block (CBn) that corresponds to a battery monitoring IC (2n) connected to a main microcomputer (3) via an insulation I/F (4) so as to be capable of communication, thereby equalizing current consumed in battery monitoring ICs (21 to 2n).

Abstract: A delta signal and opposite delta signal are generated such that a sum of the two signals is substantially zero. The delta signal is applied across a first set of electrochemical cells. The opposite delta signal is applied across a second set of electrochemical cells series connected to the first set. A first held voltage is established as the voltage across the first set. A second held voltage is established as the voltage across the second set. A first delta signal is added to the first held voltage and applied to the first set. A second delta signal is added to the second held voltage and applied to the second set. The current responses due to the added delta voltages travel only into the set associated with its delta voltage. The delta voltages and the current responses are used to calculate the impedances of their associated cells.

Abstract: A novel method for real-time small-signal stability analysis for power electronic-based components in a power system. The method may be used to monitor a power system in real-time by perturbing the source side of an electronic-based component of the power system of about 0.5 to 1 percent of a nominal current of the power system at the source side using shunt current injection, and perturbing the load side of the power electronic-based component by varying the voltage at the load side using series voltage injection. Time-domain results of the perturbations may be transferred to frequency-domain results and the stability of the power system may be monitored by obtaining a Nyquist contour and employing unit circuit criterion or Generalized Nyquist Criterion.

Abstract: A method of performing a hot test of a packaged phosphor converted light-emitting diode (pc-LED) includes selectively heating portions of the phosphor layer using a laser to provide a predetermined temperature gradient in the phosphor layer. The selective heating can directly heat the silicone in a silicone-based phosphor layer, or directly heat the active ion(s) of the phosphor in a Lumiramic™-based phosphor or even the active ion(s) of a silicone-based phosphor layer. A current is applied to the InGaN film to establish a predetermined temperature at the InGaN film junction, the film junction being adjacent to the phosphor layer. Photometric measurements are performed on the LED after the selective heating and during the applied electroluminescent current. This method quickly establishes the temperatures and temperature gradients in the LED consistent with those of an operating, product-level LED, thereby ensuring accurate binning of the LED.

Abstract: A chopping technique, and associated structure, is implemented to cancel the magnetic 1/f noise contribution in a Tunneling Magnetoresistance (TMR) field sensor. The TMR field sensor includes a first bridge circuit including multiple TMR elements to sense a magnetic field and a second circuit to apply a bipolar current pulse adjacent to each TMR element. The current lines are serially or sequentially connected to a current source to receive the bipolar current pulse. The field sensor provides a high output and a low output in response to the bipolar pulse. This asymmetric response allows a chopping technique for 1/f noise reduction in the field sensor.

Abstract: An arrangement for use in an electricity meter includes a sensor and a processing circuit. The sensor is supported directly or indirectly by a meter housing. The sensor is configured to measure a magnetic field in proximity to a current sensor of the electricity meter. The sensor is also configured to generate a measurement signal representative of, at least in part, a magnitude of the magnetic field. The processing circuit is operably coupled to receive first information representative of the measurement signal. The processing circuit is configured to obtain a first value representative of the magnetic field based on the first information, and determine a first adjustment value responsive to a determination that the first value exceeds the first threshold value. The processing circuit is further configured to generate energy consumption information based at least in part on the first adjustment value.

Abstract: Provided is a magnetic sensor for detecting a magnetic field. The magnetic sensor includes a magnetic layer of a closed loop shape; a pair of current terminals which face each other contacting with the closed loop and through which current is input/output; and a pair of voltage terminals which face each other contacting with the closed loop and from which output voltage is detected. Both an anisotropic magnetoresistance effect (AME) and a planar Hall effect (PHE) contribute to the output voltage and a hysteresis of the output voltage is eliminated by exchange coupling of a ferromagnetic layer by a ferromagnetic-antiferromagnetic layer structure and a ferromagnetic-metal-antiferromagnetic layer structure. Accordingly, it is possible to minimize a hysteresis due to a demagnetization factor of the closed loop, stabilize the output voltage of the magnetic sensor and enhance sensitivity.

Abstract: A magnetic resonance imaging receiver coil provides for high SNR and high uniformity over a range of loading conditions with layers, or stacks, of independent conductive elements. The plurality of layers preload the receiver coil reducing the circuit variation as the subject coupling and loading varies. The preload is such that coil performance, or SNR, is maintained over a large range of impedance variation. This configuration is designed to exceed the performance of single trace coils over a range of impedance consistent with variations associated with different subjects, and may also incorporate coils of different resonance frequencies.

Abstract: According to one embodiment, an MRI apparatus (20) obtains a nuclear magnetic resonance signal from an RF coil device (100) which detects the nuclear magnetic resonance signal emitted from an object (P), and this MRI apparatus (20) includes a first radio communication unit (200), a second radio communication unit (300) and an image reconstruction unit (56). The first radio communication unit (200) obtains the nuclear magnetic resonance signal detected by the RF coil device (100), and wirelessly transmits the nuclear magnetic resonance signal in a digitized state via an induced electric field. The second radio communication unit (300) receives the nuclear magnetic resonance signal wirelessly transmitted from the first radio communication unit (200) via the induced electric field. The image reconstruction unit (56) reconstructs image data of the object (P) based on the nuclear magnetic resonance signal received by the second radio communication unit (300).

Abstract: The invention relates to a magnetic resonance method involving the generation of high-frequency pulses and magnetic gradients (gx, gy, gz) for the selective excitation of an object to be examined. According to the invention, the magnetic resonance method is characterized in that a magnetic resonance signal s(t) according to the following signal equation is generated: s ? ( t ) = ? V ? m ( r r , T ) ? exp ? [ t ? / ? T 2 ] ? exp ? [ ? ? ? t ? ? ? s ] ? exp ? [ - ? ? ? k r ? ( T - t ) · r r ] ? ? ? 3 ? r wherein stands for a desired transversal magnetization after the selective excitation, t stands for a time, {right arrow over (r)} stands for a position vector and T stands for a duration of a pulse, and whereby s(t) stands for a magnetic resonance signal, V stands for a volume that is to be examined, T2 stands for a transversal relaxation time, and ?s stands for a shift of the resonance frequency.

Abstract: Methods, apparatuses, systems, and software for extended phase correction in phase sensitive magnetic resonance imaging utilizing an optimized region-growing based phase correction algorithm. Phase correction is formulated as selecting a vector for each pixel of an image from two input candidate vectors so that the orientation of the output vector is spatially smooth. In certain embodiments, the optimized region growing algorithm uses automated quality guidance for determining the sequence of region growing and jointly considers the two input candidate vectors during region growing. Further, the algorithm tracks the quality and the mode at each step of the processing. Spatially isolated tissue regions are automatically segmented and processed with different threads of region growing and the correct vector is reliably identified as the output vector for each thread of region growing. Final phase correction was performed by pixel level optimization.

Abstract: Systems and methods for calibrating on-die analog current sensors are disclosed. The methods can be routinely applied to perform a calibration such as during a system initialization or boot procedure or during other times when the system is in a sleep or power saving mode of operation. The systems determine a leakage current in the device under present environmental conditions. A baseline load current determined under the present temperature and input voltage is retrieved and used to determine a total leakage current. A reproducible and stable dynamic load is controllably applied to provide a known current to the on-die analog current sensor. A third mechanism permits repeatable adjustments to the known current that span the operational range of the on-die integrated current sensor. The responsiveness of the disclosed mechanisms ensures that temperature induced leakage does not increase significantly during a current sensor calibration.

Abstract: An apparatus and method are provided for handling a periodic assistance session flow. Each periodic assistance data provision includes a session identification so that interlinked messages within the periodic assistance data delivery can be linked in the receiving end. Any modifications to the session are handled via the periodic session identification so that the changes to the assistance data delivery can be pointed to the right session.

Abstract: Systems and techniques for determining the accuracy of network based user equipment (UE) locating methods and results thereof are disclosed. Periodic direct measurements of location error for a network based location result are determined by the difference in the network based location result and an assisted global positioning system (AGPS) location result. The location error is associated with a cell-pair contributing to data employed to determine the network based location result. The error associated with the cell-pair is then applied as a measure of accuracy in future network based location results that also employ data associated with the cell-pair to determine the future network based location result.

Abstract: A computing device can determine an estimated location of a target computing device based on historical signal readings describing wireless communication signals received from the target computing device. A signal reading can include data such as a signal strength value indicating the received signal strength of the wireless communication signal, a timestamp value and a geographic coordinate value indicating the location of a receiving computing device when the wireless communication signal was received. The signal readings can describe wireless communication signals received from the target computing device by one or more receiving computing devices and received during various times. The computing device can calculate the estimated location of the target computing device by triangulating the location of the target computing device based on the geographic coordinate value and signal strength value of three signal readings selected from the set of signal readings.

Abstract: Innovative new methods in connection with lighter-than-air (LTA) free floating platforms, of facilitating legal transmitter operation, platform flight termination when appropriate, environmentally acceptable landing, and recovery of these devices are provided. The new systems and methods relate to rise rate control, geo-location from a LTA platform including landed payload and ground-based vehicle locations, and steerable recovery systems.

Abstract: Systems and methods for determining signal source location in wireless local area networks are disclosed. An example method includes receiving, from a first signal reader, a first time-of-arrival measurement for a first radio frequency (RF) signal generated by a first wireless local area network (WLAN) signal source located at a first known location, the first time-of-arrival measurement being relative to a first clock of the first signal reader; receiving, from a second signal reader, a second time-of-arrival measurement for the RF signal, the second time-of-arrival measurement being relative to a second clock of the second signal reader, wherein the first clock is not synchronized with the second clock; defining a first time relationship between the first clock and a system time based on the first time-of-arrival measurement; and defining a second time relationship between the second clock and the system time based on the second time-of-arrival measurement.

Abstract: A system of asynchronously-clocked fixed-location devices and a roaming client device can be used for a distance determination of the roaming client device. The system includes a master device, at least one slave device, and any number of roaming client devices. The master device transmits a series of pulses. Once those pulses reach the client device, the client device will begin to count the number of pulses. Once those pulses reach the slave device, the slave device will transmit an acknowledgement pulse. After the client device receives the acknowledgement pulse, the client device will stop counting the pulses from the master device. The total number of pulses counted by the client device will then be used in the distance determination of the client device.

Abstract: A high-frequency circuit is described as having lines crossing each other on a printed circuit board for high-frequency signals, wherein the sections of the lines, lying on both sides of a crossing point as well as a coupler forming the crossing point are situated in a common plane on the printed circuit board and the sections of the lines are connected to four ports of the coupler situated in a quadrangle, which are connected to one another via a plurality of coupling paths in such a way that the components of a signal supplied at a port, which propagate on various coupling paths, interfere destructively at the adjacent ports and constructively at the diagonally opposite port.

Abstract: Methods and apparatus to receive radar pulses, process the received pulses using weighted finite state machine to learn a model of an unknown emitter generating the received radar pulses, and estimate a state/function of the unknown emitter based on the received radar pulses using the learned model, and predict the next state/function of the unknown emitter based on the received radar pulses and applying maximum likelihood estimation.

Abstract: An altimeter system is provided. The altimeter system includes a receiver mixer including an antenna-input and a local-oscillator-input; a transceiver circulator communicatively coupled to an antenna via a transmission line having a selected length and communicatively coupled to the antenna-input of the receiver mixer; and a transmitter configured to output a transmitter signal to the antenna via the transceiver circulator. The transmitter signal is frequency modulated with a linear ramp. The transmitter is communicatively coupled to the receiver mixer to input a local oscillator signal at the local-oscillator-input of the receiver mixer. The receiver mixer is communicatively coupled to input a target-reflected signal from the antenna at the antenna-input of the receiver mixer. The selected length of the transmission line is set so that a composite-leakage signal at the antenna-input of the receiver mixer has a linear phase across a sweep bandwidth.

Abstract: An optoelectronic device has a first component provided to generate radiation, a second component provided to receive radiation, a connection board and a frame. The first component and the second component are arranged on the connection board. The frame is arranged on the connection board. The first component is arranged in a first opening in the frame. The second component is arranged in a second opening in the frame. The first opening and the second opening extend from a main face of the frame opposite the connection board in the direction of the connection board. The main face between the first opening and the second opening has an intermediate region, in which a reflection of radiation incident on the main face is reduced.

Abstract: An optical device is disclosed that may be employed in distance measuring devices. In at least one embodiment, the optical device includes a control unit that is adapted to cause at least one control signal generator unit to generate at least one control signal according to a predetermined temporal function on the basis of an elapsed time from a predetermined point in time. On the basis of the generated at least one control signal, at least one parameter of a receiver unit may be adjusted during the travel time of the optical pulse, wherein the at least one parameter affects the dynamic range of the receiver unit. In this way, the dynamic range of the receiver unit may be increased. A method is further disclosed for operating such an optical device, along with a distance measuring device including such an optical device and a surveying instrument including such a distance measuring device.

Abstract: A distance measuring apparatus and a distance measuring method are provided. The distance measuring apparatus includes a GPS module, an ultrasound transceiver module and a control module. The GPS module is configured to generate a pulse signal. The ultrasound transceiver module is configured to generate and transmit a first ultrasound signal and receive a second ultrasound signal transmitted from an object. When the control module receives the pulse signal, the control module controls the ultrasound transceiver module to generate and transmit the first ultrasound signal, and determines whether the ultrasound transceiver module receives the second ultrasound signal within a first interval. When the ultrasound transceiver module receives the second ultrasound signal within the first interval, the control module determines a distance between the distance measuring apparatus and the object according to a time difference.

Abstract: A method for reconstructing a dielectric image using electromagnetic waves, comprising: acquiring a measurement value of the electromagnetic waves; generating a matching system matrixes between the meshes; generating a smoothed dyadic Green's function matrix; generating an electromagnetic wave calculation value; calculating a misfit error between the acquired electromagnetic wave measurement value and the generated electromagnetic wave calculation value, and checking whether a change of the calculated misfit error satisfies a predetermined optimization determination condition; updating dielectric parameters at the meshes; and outputting a reconstructed dielectric image in the image reconstruction region.

Abstract: A method and system for obtaining SAR images with reduced or eliminated surface clutter to detect subsurface targets, the method comprising the following steps: —selecting a first frequency and an incidence angle for the radar signal such that the ratio of surface backscattering to subsurface target backscattering is significantly larger for vertical polarization than for horizontal—obtaining vertically and horizontally polarized SAR images based on the same SAR path exploiting the selected first frequency and viewing angle—weighting and differencing the vertically and horizontally polarized SAR images so that the surface backscattering completely cancels between the two images and only the combination of the target backscattering components remains.

Abstract: The present invention provides a system and method for obtaining data to determine one or more characteristics of a wind field using a first remote sensing device and a second remote sensing device. Coordinated data is collected from the first and second remote sensing devices and analyzed to determine the one or more characteristics of the wind field. The first remote sensing device is positioned to have a portion of the wind field within a first scanning sector of the first remote sensing device. The second remote sensing device is positioned to have the portion of the wind field disposed within a second scanning sector of the second remote sensing device.

Abstract: The present invention essentially comprises a system, method, computer program and combinations thereof to utilize dual-polarization generated data generally associated with weather and non-weather events for mapping data, producing geo-referenced data, producing mosaics, generation of precipitation masks, non-precipitation mask, and classification masks in general, production of vertical cross sections and predetermined fly throughs, producing short term forecasting, prediction of specific weather phenomenon, correcting or adjusting rain gauge data as well as quantitative precipitation estimation, and combining other meteorological data to correct or adjust estimated rainfall accumulation gathered by dual-polarization radar.

Abstract: In a computer-implemented method and system for capturing the condition of a structure, the structure is scanned with a three-dimensional (3D) scanner. The 3D scanner generates 3D data. A point cloud or 3D model is constructed from the 3D data. The point cloud or 3D model is then analyzed to determine the condition of the structure.

Abstract: There is provided a limited-area reflection type optical sensor having an emitted light lens and a reflected light lens. An opposite-light-receiver-side portion opposite to a light receiver side constitutes a first curvature surface having a first curvature while a light-receiver-side portion on the light receiver side with respect to the opposite-light-receiver-side portion constitutes a second curvature surface having a second curvature smaller than the first curvature in the emitted light lens provided in an optical path of the emitted light. An opposite-light-emitter-side portion opposite to a light emitter side constitutes a fourth curvature surface having a fourth curvature while a light-emitter-side portion on the light emitter side with respect to the opposite-light-emitter-side portion constitutes a fifth curvature surface having a fifth curvature smaller than the fourth curvature in the reflected light lens provided in an optical path of the reflected light.

Abstract: A system and method for classifying vehicles from laser scan data by receiving laser scan data corresponding to multiple vehicles from a laser scanner; extracting vehicle shapes corresponding to the multiple vehicles based on the laser scan data; aligning the vehicle shapes; and generating vehicle profiles based on the aligned vehicle shapes. The system and method can further include aligning the vehicle shapes using sequence kernels, such as global alignment kernels, and constraining the sequence kernels based on determined weights.

Abstract: Systems, apparatuses, and methods are provided for developing a fingerprint database for and determining the geographic location of an end-user device (e.g., vehicle, mobile phone, smart watch, etc.) with the database. A fingerprint database may be developed by receiving a depth map for a location in a path network, and then identifying physical structures within the depth map. The depth map may be divided, at each physical structure, into one or more horizontal planes at one or more elevations from a road level. Two-dimensional feature geometries may be extracted from the horizontal planes. At least a portion of the extracted feature geometries may be encoded into the fingerprint database.

Abstract: Methods, systems, and computer readable media for mitigation of interference of GPS signals are disclosed providing selective mitigation of in-band interference implementing deterministic phase control. In one embodiment, a system for mitigating interference of GPS signals includes a pair of antennas, each receiving GPS signals that include both a desired signal component and a jammer signal component. The signal from one antenna is phase-shifted as needed to make it anti-phase with the signal from the other antenna, so that when the two signals are combined, the jammer signal components substantially cancel each other, leaving the desired signal components. Determining the phase shift required involves deterministically calculating the phase shift based on the amplitudes of the two input signals and the amplitude of the combined signal instead of the iterative techniques used in conventional systems.

Abstract: The technology disclosed relates to implementing a novel-testing framework that combines playback of captured GNSS signals with real-time emulation of assisted global navigation satellite system telemetry (abbreviated A-GNSS) in a test session with a mobile device. In particular, it can be used for testing A-GNSS performance of communication devices, navigation systems, telematics and tracking applications.

Abstract: In order to enable a geopositioning receiver of a user to resolve phase ambiguities without necessarily using multi-frequency observations, assistance data is developed thanks to measurements made at a reference network (10, 12, 14) and sent to the receiver of the user. The assistance data used preferably consist of transmitter clock values associated with the carrier code sliding combination (?eme) or with data sufficient for reconstructing said values. The transmitter clock values associated with the carrier code sliding combination (?eme) can be reconstructed from iono-free transmitter clock values (heme) and clock biases (C?eme), for example.

Abstract: A method for determining geolocation of a mobile device, and a system for performing the method. The mobile device includes a location component, a local positioning component, and a reference positioning component. The method includes determining a local-positioning period based on an identified factor, and obtaining a location fix for the device from the reference positioning component. The method further includes commencing the period and measuring movement using the location component. The method also includes determining a present location of the device, using the location component, based on the location fix and the movement data and, during the period, repeating the measuring and determining steps. The method further includes, after the period expires, updating the location fix with a new location fix from the reference positioning component, resetting the local-positioning period; and repeating the steps for determining location during the reset period using the new location fix.

Abstract: A radiation sensor includes a substrate and a polymer multilayer film including alternating layers of a high refractive index polymer and a low refractive index polymer. The high refractive index polymer and the low refractive index polymer each comprise repeat units derived from a photo-crosslinkable monomer. The radiation sensors are useful in preparing various articles, including wearable patches, packaging materials, labels, and window panes. Also described is a method of detecting radiation using the radiation sensors.

Abstract: A radioactive gas measurement apparatus comprises: a radiation measurement cell comprising an inlet pipe and a discharge pipe, the radiation measurement cell introducing and discharging a radioactive gas containing a nuclide to be measured and a positron emitter nuclide through the inlet pipe and the discharge pipe; a radiation detector for measuring a radiation generated from the radioactive gas; and a radiation collimator allowing the radiation measurement cell to communicate with the radiation detector and setting a predetermined radiation measurement geometry condition between the radiation measurement cell and the radiation detector. Then, as the predetermined radiation measurement geometry condition, an inner wall area of the radiation measurement cell which the radiation detector views through the radiation collimator is set equal to or less than a half of a total inner wall area of the radiation measurement cell.

Abstract: X-ray imaging apparatus, which includes an x-ray detector. The x-ray detector comprises a member configured to convert incident x-ray wavelength photons into emitted visible wavelength photons, a position for a material under test, an x-ray source, and a structure configured to perturb an x-ray energy spectrum, each lying on a common axis. The x-ray source is arranged to direct an x-ray energy spectrum along the common axis to impinge upon the member, the structure configured to perturb the x-ray energy spectrum, and positioned material under test. The structure lies between the x-ray source and the member to one side of the position for material under test intersecting the common axis, and the said structure comprises at least three adjacent regions, each region different to immediately adjacent regions and configured to perturb the x-ray energy spectrum differently.

Abstract: CT detector modules are disclosed that include a module frame and a plurality of tileable detector sensors positioned on the module frame. Each of the tileable detector sensors includes an array of detector elements and a mounting structure directly or indirectly coupled to the detector elements to provide for a mounting and alignment of the detector sensor to the module frame. The mounting structure includes an alignment plate positioned generally opposite the array of detector elements, with the alignment plate having alignment pins forming a datum structure to align the detector sensor on the module frame and one or more threaded bosses configured to receive a fastener therein that secures the detector sensor to the module frame. The module frame includes keyed features that receive the alignment pins when the detector sensors are mounted on the module frame, so as to align the detector sensors on the module frame.

Abstract: A data acquisition module acquires seismic data actually measured at a plurality of observation points; a pulse calculation module acquires information of a propagation environment where seismic waves propagate from a hypocenter of earthquake to each observation point, and applies time reversal processing on the seismic waves received at the observation points by considering the propagation environment to acquire time reversal pulses at each observation point; a line calculation module calculates a parametric line in a length direction of a fault from a distribution of azimuths of frequency spectra of the time reversal pulses acquired by the pulse calculation module; a head searching module searches a parametric head by analyzing the seismic waves received in the vicinity of the parametric line calculated by the line calculation module; and a monitoring module monitors developments of a crack in the fault by observing the parametric head searched by the head searching module.

Abstract: Apparatus, computer instructions and method for controlling an energy output of a source array to be used in a seismic survey for illuminating a subsurface. The method includes generating a model (?) based on up-going (U) and down-going (D) components of seismic waves generated by source elements that form the source array; calculating the amplitudes and phases of each source element based on the model (?); and driving the source array based on the calculated amplitudes and phases for the source elements so that a ghost generated by the source array is reduced at emission.

Abstract: An exploration paradigm for detecting and/or characterizing gas hydrate deposits using either electromagnetic or seismic surveys, that accounts for the possibility that gas hydrate may accumulate in vertical or subvertical dikes. Geologic factors, such as the presence of the gas hydrate stability zone, indications that a prolific source of gas exists (or existed) below the gas hydrate stability zone and indications that a high flux of gas could be transported into the gas hydrate stability zone, may be considered as part of an exploration strategy. Data may be collected using seismic techniques, such as a walk-away vertical seismic profile techniques, or electromagnetic surveys that are adapted to detecting the presence of vertical or subvertical dikes. In one example, data processing and acquisition techniques may be adapted to detect hydrate dikes, and do not assume a horizontally isotropic earth model.

Abstract: In some embodiments, apparatus and systems, as well as methods, may operate to shift signal data associated with a set of receivers, in time or phase with respect to signal data associated with a receiver reference point, to transform the signal data into shifted data, wherein the signal data corresponds to energy waves propagated through a geological formation before being received by the set of receivers; to multiply the shifted data by a complex conjugate of the signal data associated with the receiver reference point to provide differential phase values; to sum and average the differential phase values to provide differential phase semblance values; and to publish the differential phase semblance values, or information derived from the differential phase semblance values to one of a storage medium, a hardcopy printout, or a display. Additional apparatus, systems, and methods are disclosed.

Abstract: A portable locator and method for establishing the location of the cable line in a region which includes at least one generally straight electrically conductive cable line extending across the region from which cable line a locating signal includes a first arrangement for measuring a local flux intensity of the locating signal at a first above ground point within the region with the portable locator in a particular orientation at the first above ground point. A second arrangement uses the local flux intensity to establish a cable line angular orientation which limits the possible directions to the cable line relative to the particular orientation of the portable locator at the above ground point. A third arrangement uses the measured local flux intensity to establish an actual direction of the cable line that is selected from the possible directions based on certain characteristics of the locating signal.

Abstract: The magnet and antenna assemblies of a logging tool can be arranged according to geometries optimal for concentric or eccentric well logging operations. In an example configuration, a logging tool can include a magnet, a magnetic core made of a magnetically permeable material, and an antenna. The outward path of the antenna can be positioned along a surface of the magnetically permeable magnetic core that faces away from the magnet, and the return path of the antenna can also be positioned along a surface that faces away from the magnet.

Abstract: A method for rebalancing a group of accelerometers in a gravity gradiometer instrument (GGI) includes the steps of defining and implementing a number of group-wise actuation constrainment modes based on a design of the gravity gradiometer instrument and its accelerometers. Implementing one constrainment mode comprises differentially scaling and distributing a single electrical current to multiple accelerometers' rebalance circuitry to cancel a specific acceleration effect experienced by the group of accelerometers or gradiometer as a whole. Superposition of a number of such modes enables rebalancing the full acceleration environment experienced by the group of accelerometers, given negligible local differential acceleration effects specific to, say, an individual accelerometer of the assembly.

Abstract: An electronic device may be provided with a touch screen display that is controlled based on information from a proximity sensor. The proximity sensor may have a light source that emits infrared light and a light detector that detects reflected infrared light. When the electronic device is in the vicinity of a user's head, the proximity sensor may produce data indicative of the presence of the user's head. Variations in proximity sensor output due to user hair color and smudges on the proximity sensor can be accommodated by using an electrical sensing mechanism in addition to the light sensing mechanism. The proximity sensor may include a pair of capacitive electrodes for generating an electric field in the vicinity of the device. The presence of a user's head can sufficiently disturb the electric field so as to produce data indicative of the presence of the user's head.

Abstract: Device (1) for checking the calibration of catching instruments measuring rainfall intensity, which comprises a plurality of containers (2a, 2b, 2c) having a predetermined internal volume (V1, V2, V3), the volume of at least two of said containers being different from each other, said containers being intended to contain respective amounts of a liquid, wherein each container (2a, 2b, 2c) is provided with a single exhaust nozzle (3a, 3b, 3c) intended to put the internal volume (V1, V2, V3) of said container (2a, 2b, 2c) in fluid communication with an outer environment such to allow said liquid discharged from said nozzle (3a, 3b, 3c) to flow out by gravity in a substantially horizontal direction, each one of said containers (2a, 2b, 2c) further comprising air intake means (4a, 4b, 4c) intended to put the internal volume (V1, V2, V3) in fluid communication with the outer environment in order to define a compensation of the air pressure inside the container, such to make piezometric head constant at the height o

Abstract: A coloring composition is provided which is less likely to remain on a pattern of other colors as residues and can inhibit occurrence of coating defects. Also provided are a colored pattern, a color filter, a method of producing a color filter, a pattern forming method, a solid-state imaging device, and an image display device, each using the coloring composition. The coloring composition contains a resin (A) having a dye structure, in which in the peak area of the total molecular weight distribution of the resin (A) as measured by gel permeation chromotography, the proportion of the peak area of a component having a molecular weight of 20,000 or more is 10% or less.