Abstract: A Continuous Transmission Frequency Modulated (CTFM) detection apparatus is provided. The CTFM detection apparatus includes a projector, a receiving element, a motion mechanism, and a hardware processor. The projector is configured to transmit a frequency modulated transmission wave and to generate a 3-dimensional transmission beam. The receiving element is configured to receive a reflected wave, the reflected wave comprising a reflection of the transmission wave. The motion mechanism moves the receiving element and makes a reception beam formed by the receiving element scan a 3-dimensional space within the transmission beam. The hardware processor is programmed to at least generate information on target objects within the 3-dimensional space based at least in part on a beat signal generated based at least in part on the transmission wave transmitted by the projector and the reflected wave received by the receiving element.

Abstract: Optical positional tracking systems that may be used in virtual reality (VR)/augmented reality (AR) applications are described. Exemplary implementations comprise one or more receivers and one or more transmitters. Exemplary transmitters contains two orthogonal rotors that each emit a fan-shaped laser beam. Each beam is swept as the rotors are spun at constant speed. Exemplary optical receivers can be relatively small, and mounted at convenient locations on the VR display. These receivers consist of small optical detectors that may be mounted on head-mounted VR displays. Exemplary systems determine position by measuring the time at which each swept beam crosses each receiver/detector.

Abstract: Provided is an apparatus for determining an available driving space, including a laser distance sensor installed in a vehicle and configured to sense a region in front of the vehicle by a predetermined distance to generate distance information, a signal processing unit configured to generate plane distance information by using the distance information generated by the laser distance sensor, a curb searching unit configured to determine correlation and similarity between the generated plane distance information and previous plane distance information to search for a curb, and a determining unit configured to determine whether the region in front of the vehicle by the predetermined distance is an available driving space depending on whether a route of a curb searched by the curb searching unit is included in a driving region.

Abstract: A positioning apparatus is mounted to an own vehicle, and performs positioning of the own vehicle. The positioning apparatus acquires a light reception pattern. The light reception pattern indicates a pattern of a change in strength of reflected light in relation to a position of the own vehicle. The reflected light is obtained using a light wave for measurement that has been transmitted from the own vehicle. The positioning apparatus estimates a position of the own vehicle by referencing a database in which a reference pattern is recorded in advance, and by comparing the light reception pattern and the reference pattern. The reference pattern indicates a pattern in which a strength of reflected light is associated with each position in which a vehicle travels.

Abstract: A method and apparatus are presented for providing a compact extended ephemeris package for GNSS processing. An extended ephemeris service provides orbit trajectories and clock corrections which are predicted into the future for navigation satellites. The extended ephemeris package format used allows the ephemeris information to be sent quickly and efficiently, even when using a low bandwidth communication network. Client GNSS receiver devices obtain the extended ephemeris package and extract the satellite ephemeris information for later use. This allows a client device to operate for many days or weeks without needing to decode or receive new satellite ephemeris information.

Abstract: A method for providing WAAS infrastructure in conjunction with the sale of a WAAS enabled aircraft includes developing a sales package for a customer. The price of the sales package preferably includes a WAAS enabled aircraft and a WAAS infrastructure. The method further includes assembling a WAAS enabled aircraft and developing the WAAS infrastructure using a computer. The method also includes providing the customer with the WAAS enabled aircraft and the WAAS infrastructure.

Abstract: A detector module for an x-ray detector is disclosed. In an embodiment, the detector module includes a plurality of sensor boards arranged adjacent to one another on a module carrier. Each sensor board is arranged in a stack formation and includes a sensor layer with a sensor surface, to which a bias voltage can be applied in order to detect x-ray radiation. A voltage supply line is arranged in the stack formation along a lateral surface of the stack formation of each sensor board in order to apply the bias voltage. Moreover, an x-ray detector is disclosed for recording an image of an object irradiated by x-ray radiation, the x-ray detector including a plurality a number of detector modules arranged adjacent to one another.

Abstract: A method of demodulating an image captured from an imaging system having at least one two-dimensional grating. The captured image comprises a phase modulated fringe pattern comprising cross-term phase components resulting from presence of the at least one two-dimensional grating. The method determines parameters of at least a first non-linear transformation for attenuating the cross-term phase components. The parameters of the first non-linear transformation are determined for the imaging system to reduce artefacts in a demodulated image introduced by the cross-term phase components. The method demodulates the captured image by applying at least the first non-linear transformation with the determined parameters to the captured image to attenuate the cross-term phase components.

Abstract: A scintillator includes an activated scintillator region formed in an isotropic shape and configured to generate isotropic emissions of photons and neutrons resulting from fission, and a non-activated scintillator stop region on a surface of the activated scintillator region.

Abstract: The present invention relates to a radiation detection device for detecting gamma or x-ray radiation quanta with improved timing accuracy and improved energy resolution. The radiation detection device finds application in the detection of gamma and x-ray radiation and may be used in the field of PET imaging, and in spectral CT. The radiation detection device includes a semiconductor scintillator element and a photodetector. The photodetector is in optical communication with the scintillator element. The scintillator element has two mutually opposing faces; a cathode is in electrical communication with one of the two faces and an anode is in electrical communication with the other of the two faces.

Abstract: Described is a scintillator screen including a plurality of filaments. Each of the plurality of filaments includes scintillating particles dispersed within a thermoplastic polymer. The thermoplastic polymer includes an elastic additive. The scintillating particles are from about 10 volume percent to about 60 volume percent of each of the plurality of filaments. Each of the plurality of filaments has a refractive index of greater than or equal to 1.5. The plurality of filaments are substantially parallel to each other and are at a volume packing of from about 60 percent to about 90 percent.

Abstract: A method is described for setting the detection of a macropixel signal of an x-ray detector with a plurality of pixels, each combined to form at least one macropixel. The geometrical efficiency and the signal drift factor of the individual pixels are first established. A target drift value is established. A parameter, which sets a compromise between an allowed drift of the macropixel signals and the achievable dose efficiency, is also defined. Based on the established parameters, the weighting of the individual pixel signals, taking into account a function taking account of the signal drift and the dose utilization of the resulting macropixel signal depending on the weightings of the pixel signals, is established. A weighted addition of the individual pixel signals to form macropixel signals is defined on the basis of the weightings. A signal detection device, an x-ray detector and a computed tomography system are also described.

Abstract: A radiation imaging apparatus includes a pixel array including a plurality of pixels, each including a conversion unit, a holding unit, an output unit, and a reset unit, a control unit configured to control the pixel array to perform a reset operation for concurrently performing resetting on the plurality of pixels and a holding operation for concurrently performing holding on the plurality of pixels, based on a control signal indicating timing of generation of radiation, and a selection unit configured to perform a selection operation for sequentially selecting a pixel. The selection unit selects at least part of the plurality of pixels in a period from when the control unit performs the reset operation to when the control unit performs the holding operation based on a first control signal among a plurality of the control signals.

Abstract: An apparatus and a method are provided for calculating an output spectrum of a photon-counting detector based on an incident spectrum. The apparatus includes processing circuitry to determine a plane extending from a top face of the photon-counting detector that includes regions that all possible incident rays will transverse; divide the determined plane into subregions; calculate a detector response function for each of the subregions; determine an overall detector response function by summing the calculated detector response function for each of the subregions and normalizing the summation by an area of the determined plane; and calculate the output spectrum based on the overall detector response function and the incident spectrum.

Abstract: A method and system for acquiring a series of medical images includes acquiring imaging data, identifying double coincidence events and multiple detection (MD) co-incidence events from the imaging data, and storing the double coincidence events and the MD coincidence events in a first dataset and a second dataset, respectively. The method also includes applying a normalization correction to the first dataset and/or the second dataset using normalization values based on double coincidence events and/or MD coincidence events to obtain at least one normalized dataset, and reconstructing a series of medical images of the subject from the at least one normalized dataset.

Abstract: According to an embodiment, a neutron measurement apparatus has: a neutron detector; a preamplifier that amplifies an output signal of the neutron detector and outputs a neutron detection signal; a pulse counting unit that measures the neutron intensity by using pulse counting method by which the neutron detection signal is used to count the number of individual pulses; a Campbell measurement unit that measures the neutron intensity by using Campbell method by which a time average of squares of AC component of the neutron detection signal is calculated; a correction constant calculation unit that calculates a correction constant for correcting an output of the Campbell measurement unit by using an output of the pulse counting unit and an output of the Campbell measurement unit; and a correction value calculation unit that outputs, based on the output of the Campbell measurement unit, a corrected value by using the correction constant.

Abstract: Computing device, computer software and methods for generating sweep signals corresponding to plural sources that generate seismic waves. The method includes selecting (502) a nominal sweep signal (S0); applying (512) a perturbation (P) to the nominal sweep signal (S0); and calculating (518) the sweep signals (Sn) by varying the perturbation (P), each sweep signal corresponding to a seismic source.

Abstract: A source element for generating seismic waves includes a housing; a partitioning element placed inside the housing and configured to split the housing in a closed chamber and an opened chamber; and a valve in fluid communication with the closed chamber and configured to supply high-pressure air to the closed chamber to make the partitioning element oscillates. An oscillation of the partitioning element generates low-frequency seismic waves.

Abstract: Method for obtaining zero offset or near zero offset data in a marine seismic streamer survey. An acoustic transmitter (41) is attached to one of the buoys (14 or 16) that provide flotation to each streamer (12) and tow umbilical (13). The acoustic transmitters, or single transmitter in the case of a 2-D survey, may be fired (71-73) before each shot from the survey air guns. The response to the acoustic transmitters recorded by the near sensors in each streamer, or by a water break sensor if provided, will be a near-zero to zero-offset record of the shallow subsurface below the water bottom.

Abstract: Embodiments of a system are provided for forming enhanced seismic array traces using virtual seismic sensors in addition to the real seismic sensors to form a virtual seismic array. The system receives the signal responses from the real sensors, processes the signal responses from the sensors to define virtual signals using a narrowband decomposition of the complex envelope of the sensor signal responses, calculates second- and fourth-order statistics to derive steering vectors for the array of real sensors, and forms a virtual seismic array in response thereto. Machines, computer program product, and computer-implemented methods are provided for forming enhanced seismic array traces by receiving the array responses from sensors, processing the signals to define virtual sensor signals and a virtual seismic array, and forming an array response for the virtual seismic array to form a seismic trace of enhanced resolution.

Abstract: Seismic data recorded by subsurface seismic sensors placed in a borehole, such as an oil or gas well, are transformed via a process of upward wavefield propagation to pseudo-receivers at the surface of the earth. The seismic data thus transformed can be processed as though the data had been recorded by the pseudo-receivers at the surface rather than in the borehole where the data were actually recorded. This method accurately accounts for seismic source statics, anisotropy, and all velocity effects between the real receivers in the borehole and the pseudo-receivers at the surface of the earth.

Abstract: A method is described for of creating a high-resolution velocity model of a geological medium that includes generating a long-wavelength anisotropic velocity model using tomographic inversion of seismic data gathers and combining the long-wavelength velocity model with an attenuation model. The method further includes performing prestack depth migration on the seismic data gathers using the long-wavelength velocity and attenuation model to produce seismic image gathers, applying a dip-consistent filter to the seismic image gathers, and transforming the filtered seismic image gathers to the time domain. The method further includes generating a full-band impedance model by performing impedance inversion of the time-domain filtered seismic image gathers using the long-wavelength velocity and attenuation model. The full-band impedance or velocity model is calibrated in the frequency domain in a manner independent of the spatial coordinates.

Abstract: Methods and systems for optimizing the quantity and precision of processed seismic data based on reducing destructive interference of the seismic data. Sensitivity kernels are computed based on the medium of interest, e.g., source-receiver pairs, CDP collections and migrated collections, for a preselected wavefield parameter, e.g., travel-time, amplitude, slowness, etc., using a velocity model. Next, wavefield parameters are computed for a selected subset of the medium and are inverted or deconvolved with the sensitivity kernels to generate subsurface parameter variations.

Abstract: A method and marine seismic processing system including an interface for receiving recorded data, wherein the recorded data includes seismic data and bio-acoustic data; a seismic data processor for estimating a source signature from the recorded data, wherein the source signature is associated with a seismic source that emits seismic waves in water during a seismic survey; and a bio-acoustic processor that estimates a presence of a mammal generating the bio-acoustic data, based on a processed signal obtained by removing the source signature from the recorded data.

Abstract: A marine streamer spread for acquiring seismic data, the spread including a streamer having a first portion and a second portion; the first portion including both first pressure sensors and pressure derivative sensors for acquiring the seismic data; and the second portion including second pressure sensors. The first portion imparts ghost diversity to the seismic data by having a variable-depth profile and the pressure derivative sensors impart polarity diversity to the seismic data.

Abstract: A seismic acquisition system includes a streamer spread including at least one streamer, the streamer spread having first and second spread areas characterized by at least one acquisition parameter, the first spread area including streamer sections having a first composition of seismic receivers, and the second spread area including streamer sections having a second composition of seismic receivers. The first composition of seismic receivers has a first value for the at least one acquisition parameter and the second composition of seismic receivers has a second value for the at least one acquisition parameter.

Abstract: In order to acquire seismic data relative to an underground area beneath the sea, seismic waves are emitted in an emission direction forming an angle ? with the vertical using, at least one seismic source submerged at a depth d. A seismic signal is collected following the emission of the seismic waves and the propagation of same underground with a view to processing same. In one embodiment of the method, in order to overcome the major problem linked to the depth limit encountered by seismic sources, the processing of the seismic signal comprises a summation of a plurality of terms including the seismic signal and the seismic signal delayed by ?T=2d·cos ?/V, in which V is the speed of propagation of the seismic waves in water.

Abstract: A method that includes obtaining log data of a downhole formation, and characterizing the downhole formation by determining stiffness coefficients including C33, C44, C66, C11, C12, and C13. C13 is a function of C33, C44, C66, and at least one of a kerogen volume and a clay volume derived from the log data. In another method or system, C13 is derived based at least in part on C11 calculated as C11=k1[C33+2(C66?C44)]+k2 or C33 calculated as C33=((C11?k2)/k1)?2(C66?C44), where k1 and k2 are predetermined constants. In another method or system, C13 is derived in part from at least one of a kerogen volume derived from the log data, a clay volume derived from the log data, C11 calculated as C11=k1[C33+2(C66?C44)]+k2, or C33 calculated as C33=((C11?k2)/k1)?2(C66?C44), where k1 and k2 are predetermined constants.

Abstract: An arrangement for association with an MRI and detecting presence of ferrous material and discriminating out far field magnetic disturbance. The arrangement includes a detector configured to monitor the magnetic field and includes an array of sensors arranged about the periphery of an opening in a spaced arrangement such that each sensor is associated with a different portion of the opening. Each of the sensors is configured to output a signal having a value indicative of the sensed magnetic field at the associated portion of the opening. The arrangement includes a corrector configured to correct each signal value from the change in response to the far field magnetic disturbance and to provide respective corrected signal values. The arrangement includes a processor configured to use the corrected signal values to determine a ferrous-indicating limit is exceeded and to provide a safety response that addresses the ferrous-indicating limit exceed condition.

Abstract: A detector for detecting target devices in magnetic soil, comprising: a transmitter; a sensor; and a processing system for driving the transmitter to generate periodic pulses, and processing a secondary response measured by the sensor at two different time positions after termination of the transmitter pulse to filter out a secondary response caused by the soil.

Abstract: An airborne ElectroMagnetic (EM) survey system wherein the system includes; first, a series of transmitter coils, which induce a primary (EM) field into the earth resulting in a secondary EM field being created in any sub-surface electrically conductive bodies; and second, a set of three orthogonal receiver coils which detect the secondary EM field. Multiple transmitter coils through which an electric current is pumped, form part of the structural, aluminum framework of a multi-rotor drone. The receiver sensor may be an EM induction sensor, comprised of multi-turn, copper windings, mounted inside an aerodynamic bird and separated by non-conductive sphalerite, which acts as an electrical insulator to limit self-induction and capacitance. Additionally a lighter-than-air balloon may be used to add vertical lift and increase a pendulum effect.

Abstract: Formation properties may he more efficiently derived from measurements of multi-frequency, multi-component array induction tools, by emphasizing the measurements associated with shorter spacings/lower frequencies in certain regions and short-to-middle spacings/higher frequencies in other regions. In at least one embodiment, a disclosed logging system includes a logging tool that when conveyed along a borehole through a formation obtains multi-component transmit-receive antenna coupling measurements with multiple arrays having different antenna spacings; and a processing system that operates on the measurements. The processing system derives from said measurements one or more formation parameter estimates; determines measurement weight coefficients for a cost function based on said one or more formation parameter estimates; and inverts said measurements with said cost function to obtain one or more enhanced parameter estimates.

Abstract: A method for locating planned markers within a log containing borehole data parses log data to locate an uncertainty region for a planned marker. A fingerprint match is located for the planned marker in the located uncertainty region. The located fingerprint match is saved. A determination is made if additional planned markers are present and returns to the step of parsing for a next planned marker if additional planned markers are present.

Abstract: A method and system for analyzing a core sample from a wellbore, where the analysis takes place in the field and proximate the wellbore. The system includes trailers adjacent one another and on a drilling pad, so that real time analysis of the core sample can occur after being extracted from the wellbore. One of the trailers can include a unit for scanning the core sample and obtaining information within the sample. Other trailers can include units that further analyze the core, such as by grinding, laser spectroscopy, Raman spectroscopy, and scanning the core material nano-structure. The core sample scanning involves a computerized tomography (CT) scan, where a length of core is analyzed in the scanning unit.

Abstract: Systems and methods for a gravity survey using a free-fall gravity sensor are disclosed. The method includes determining a configuration for a gravimeter for use in a moving-base gravity survey. The gravimeter is operable to obtain absolute gravity measurements. The method further includes obtaining a set of gravity data from the moving-base gravity survey, and correcting the set of gravity data for interference. The method additionally includes generating a gravity model based on the corrected set of gravity data.

Abstract: A mudlogging device may consist of a housing that is positioned above a ground level and proximal a wellbore. The housing can have a first interferometer and a second interferometer that are connected to a common pathway. The duel interferometer configuration may allow a gas sample to be concurrently tested by the respective interferometers.

Abstract: A method of analyzing a core sample from a wellbore by creating a visual composite image of the core sample that is based on a scan of the core sample. The scan directs radiation at the core sample, such as a computerized tomography (CT) scan, and obtains scan data by estimating radiation absorbed by material in the core sample. The composite image is made up of an arrangement of voxels, where each voxel represents a designated volume of the core sample, and is are assigned a value that corresponds to a measured value of radiation absorbed in the designated volume of the core sample.

Abstract: Device for detecting the position of at least a first and a second hand of an electromechanical watch, said first and second hands moving above a dial, the detection device including a single light source emitting a light beam towards the first and second hands, and a first and a second light detection system, the light source and the first and second light detection systems being mounted on or underneath the dial, the light source and the first and second light detection systems being arranged so that, in a determined position of the first hand, the light beam emitted by the light source is reflected by the first hand towards the first detection system, and in a determined position of the second hand, the light beam emitted by the light source is reflected by the second hand towards the second detection system.

Abstract: Systems, methods, and computer programs for monitoring a drilling operation in a subterranean formation include receiving, from a first sensor array, one or more signals caused, at least in part, by the fracturing operation in the subterranean formation; receiving, from the first sensor array, one or more electromagnetic signals generated by an electroseismic or seismoelectric conversion of the seismic signals caused, at least in part, by the fracturing operation in the subterranean formation; and determining a property of one or more of a fracture or the subterranean formation based, at least in part, at least in part, on the signals received from the first sensor array.

Abstract: Systems, methods, and computer programs for monitoring a drilling operation in a subterranean formation include receiving, from a first sensor array, one or more seismic signals caused, at least in part, by the drilling operation in the subterranean formation; receiving, from the first sensor array, one or more electromagnetic signals generated by an electroseismic or seismoelectric conversion of the one or more seismic signals caused, at least in part, by the drilling operation in the subterranean formation; and determining a property of one or more of the drillstring and the subterranean formation based, at least in part, on the seismic signals and the corresponding electromagnetic signals received from the first sensor array. The first sensor array is arranged to monitor the drilling operation.

Abstract: Systems, methods, and media for modeling fluid-conducting fractures in reservoir grid simulations. The method includes determining a model of an underground reservoir. The model includes one or more conductive fractures and a grid of three-dimensional (3D) reservoir cells. The method also includes determining the 3D reservoir cells that intersect the conductive fracture. The method further includes determining two-dimensional (2D) fracture cells representing the conductive fracture in the model. Additionally, the method includes determining fluid flow through the conductive fracture using fluid flow parameters of the plurality the 3D reservoir cells intersecting the fracture and fluid flow parameters of the 2D fracture cells. Further, the method includes updating the model based on the fluid flow.

Abstract: Systems and methods for a hybrid approach to assisted history matching in large reservoirs based on a reservoir model built using connectivity between each production well and each corresponding injection well, aquifer or gas cap.

Abstract: An antireflection member, including a resin base member; and a particle layer having mesoporous-silica nanoparticles directly fixed to a surface of the resin base member, wherein the nanoparticles are at least partially embedded in the surface of the resin base member, and the nanoparticles are arranged in a mono-particle layer to form the particle layer.

Abstract: Method and sheeted material is disclosed for controlling light to increase readability of tangible, non-digital printed reading material. The sheeted material of the invention includes an anti-glare semi-transparent sheet having at least one matte surface.

Abstract: A display system (200) is provided to withstand high impact in conjunction with electrostatic discharge (ESD) protection. The display system (200) comprises a display lens (205) coated with a layer (220) of electrostatic discharge material. The display system (200) further comprises an inner housing layer (210) formed of an insulative material providing structural support to the display lens (205) and an outer housing layer (215) formed of an antistatic material providing an electrical path for dissipating electrostatic charge accumulated on the display lens (205). A portion of the display lens, formed as a flange (225), is mounted between the inner housing layer and the outer housing layer.

Abstract: The present aspect is directed to lenticular material having both partially deformed lenticules and intact lenticules extending from a substrate. The intact lenticules operate to create an optical effect to enhance background graphical elements placed upon a substrate opposite the intact lenticules. The height of portions of some lenticules are reduced or deformed, thereby disrupting the optical effect. The placement of deformed portions of lenticules is used to create primary graphical elements lacking the optical effect. These primary graphical elements are accentuated by the neighboring intact lenticules, which retain the optical effect regarding the background graphical elements.

Abstract: This light-extraction film for EL includes a diffusion layer and an uneven-structure layer, the diffusion layer including first light-diffusion fine particles, and the uneven-structure layer including second light-diffusion fine particles as desired, and satisfying the expression Px-Py?5 mass %. (Px represents the content ratio of the first light-diffusion fine particles to the total mass of the diffusion layer. Py represents the content ratio of the second light-diffusion fine particles to the total mass of the uneven structure layer.

Abstract: A manufacture method for a blazed concave grating is provided, including: replicating a blazed concave grating by means of a replication process, after the replication is completed, conducting heat preservation and cooling, then separating two gratings (G1, G2) by using different pulling manners respectively, and finally splicing the replicated and separated concave grating blanks, to obtain a required blazed concave grating. This manufacture method can solve the problem of a big error in an existing replication method for a blazed concave grating.

Abstract: The present invention relates to an optical device having a nano-structured surface capable of providing a structural color to a normal human viewer, the device made being manufactured in one single material. A plurality of nano-structured protrusions (5) is further arranged with a first periodicity (P1) in a first direction and a second periodicity (P2) in a second direction, the first and second periodicity being chosen so that the optical reflection is dominated by specular reflection. The nano-structured protrusions are optionally arranged with a relative spatial randomness (SR) with respect to the average surface positions. The position, size, and randomness of the protrusions are arranged so as to provide, at least up to a maximum angle of incidence (A_in) with respect to a normal to the surface, an angle-independent substantially homogeneous structural color perception for a normal human viewer, at least up to a maximum observation angle (A_obs) with respect to a normal to the surface.

Abstract: A liquid crystal (LC) display device uses a phase difference film which increases front contrast of the device, and a polarization plate. The film includes a first optical anisotropic layer, and a second optical anisotropic layer thereon, the first layer formed by fixing an LC compound in a homogeneous alignment state, has an order parameter (OP) of 0.75 to 0.95, and layer thickness of 0.3 ?m to 3.0 ?m, the second layer formed by fixing an LC compound in a homeotropic alignment state, has an OP of 0.60 to 0.95, and layer thickness of 0.3 ?m to 3.0 ?m, the OP which is denoted by OP=(A??A?)/(2A?+A?), “A?” which represents absorbance of the LC compound regarding light polarized parallel to an alignment direction, and “A?” which represents absorbance of the LC compound to regarding light polarized vertical to the alignment direction.