Abstract: A system and method for accurately determining the power flow within a test subject's ear canal. A calibration device (300) is used in conjunction with a probe device (400) that measures the frequency response of a cavity. The probe (400), with eartip (440), is inserted into a patient's ear and a transducer (460,470) emits a periodic signal into the ear canal. The transducer (460,470) also measures the frequency response of the ear canal and relays the data back to a digital signal processor. The same probe setup (400) is then calibrated by measuring the frequency response of a plurality of cavities (340a, 340b, 350c, 350d) having known geometries. Mean cavity length is solved for based upon the known geometries of the plurality of cavities. Consideration is also given to spreading mass wave phenomena due to point source transducer emission. Cavity temperature for calibration purposes is maintained as close as possible to body temperature thereby negating a farther source of error.

Abstract: This invention relates to a system and method utilizing a receiver architecture with a set of at least two antennae followed by a Rake demodulator at a mobile station for interference cancellation and diversity combining. Such a structure can work well only when the channel vector of desired signal is correctly estimated. The present invention makes use of the identifying spreading codes (as in IS-95 for example) to provide an adaptive channel vector estimate, to thereby cancel cochannel interference and improve the system capacity.

Abstract: In order to identify a cable buried underground, a very low frequency voltage signal is applied to the cable and an electric field sensor is brought into proximity with the cable. The sensor thus detects the voltage signal on the cable and so identifies the cable. The sensor is unaffected by one or more additional cables carrying voltage signals, which are proximate the cable of interest, as the electric filters from such additional cables do not pass to the cable of interest. The sensor is mounted on a probe which is mounted into a bore in the soil around the cable of interest. The probes may also carry a magnetometer for detecting magnetic fields generated by low frequency alternating current signals on the cable of interest.

Abstract: Multi-layered compositions having a plurality of pillared metal complexes disposed on a supporting substrate, the pillars comprising divalent electron acceptor moieties with a phosphonate or arsenate at each end. The pillars can be electron donating, electron accepting or charge generating in nature. Each layer of parallel pillars is separated by a layer of a group (IVA), (IVB), (IIIA) or (IIIB) metal or a lanthanide. The compositions can further comprise particles of at least one Group VIII metal at zero valence entrapped within each layer of the complex. The complexes can also incorporate "stalactites" and "stalagmites" of capped arsonato or phosphonato ligands interspersed with the pillars providing a series of interstices about each electron accepting group. The supporting substrate can be comprised of an organic polymer template.

Abstract: If a solenoid is mounted on an underground object, such as a boring tool, magnetic fields generated by an electric current flowing through that solenoid can be detected by a suitable detector at or above the surface. If the axis of the solenoid is tilted, the maximum value of the field is not directly above the solenoid. Therefore, the present invention makes use of measured values of horizontal and vertical components of the magnetic field to determine the separation of the detector and the solenoid, and also, by making use of a tilt sensor associated with the solenoid to derive a prediction of the ratio of the horizontal and vertical components of the field at a position vertically above or below the solenoid. If that predicted value of the ratio is then compared with the measured value of the ratio, the two will coincide when the detector is vertically above the solenoid. Thus, by moving the detector until such coincidence is obtained, the position of the solenoid can be determined.

Abstract: A warning device for a distance between cars, for measuring a distance between a car and an object in front of the car, judging the possibility of danger on the basis of distance data thus obtained, and generating an alarm in the case where it is judged to be dangerous. The warning device provides a first alarm (a rear-end collision alarm) generated in a condition of alert which necessitates deceleration or braking, and a second alarm (an alarm for a distance between cars) generated in a condition of alert which does not necessitate deceleration nor braking, the first and second alarms, respectively, being judged by separate formulae for determining. Accordingly, it is possible to positively generate an alarm when deceleration or braking is necessitated. Further, the warning device discriminates a kind of an object being measured (a moving body, obstruction, guardrail or the like) to judge danger according to the kind of the discriminated object.

Abstract: A flame retardant, drapeable screen having long-time UV-stability useful for shading and energy saving, particularly for greenhouses, comprising flexible strips with a thickness less than 100 um, which form a continuous product by means of a crochet or weave process and a yarn system, where the strips comprising at least a part of the surface of the product, and where at least some of the strips comprise light and/or heat reflecting foil strips, e.g. a low emitting metal foil, preferably an AL-foil.

Abstract: In a process and apparatus for producing long plastic sheets by pressing molten plastic materials between the forming roller and the forming drum unit, the forming drum unit comprising a thin cylindrical sleeve supported from inside by a drum support unit and pressed against the outer surface of the forming roller to deform elastically in a curve along the outer surface of the forming roller as it rotates, thus maintaining a relatively long contact length.

Abstract: An igniter electrode assembly for gas ignition of an oven burner includes a pop-in and pop-out feature that allows for the easy installation, removal, and replacement of an igniter electrode. The feature allows maintenance access to the igniter electrode without any tools or the need to disassemble the burner assembly. A bushing surrounds the igniter electrode and is held in position by set screws. Ball plungers screwed into the burner plate guide the bushing along keyways in the bushing surface. The ball plungers securely snap into recesses located at the end of the keyways. The invention allows for precision positioning of the igniter electrode tip and repeatability of positioning without having to readjust the igniter electrode or the bushing.

Abstract: A color and appearance measurement apparatus combines a computer controlled color video camera, controlled illumination conditions, frame grabber to digitize the video signal, and image processing methods to perform non-contact calorimetric measurements of complex patterns of color. Video images of samples placed into the field of view of the camera are digitized and converted from the color camera's red, green, and blue (RGB) color space to the internationally recognized and standardized CIE XYZ color space. A calibration process to set the dynamic range of the camera for the given illumination, correct for spatial non-uniformities in the lighting and responsivity of the detector arrays, correct for temporal variations in the lighting intensity, and determine the necessary coefficients to transform the RGB values to CIE XYZ tristimulus values ensures the measurements are highly repeatable and that measured color and appearance differences are in agreement with visual observations.

Abstract: A method and device for processing quasi-periodic signals from machines that provides improved diagnostic results. A dynamic, non-uniform signal termed the speed clock controls processing of the signals. This processing prevents the leakage artifacts and poor frequency resolution that can mask signal components and limit the diagnostic value of existing technology. Valuable phase information, which is destroyed by existing sampling methods controlled directly by encoder signals, is retained. The invention also enables removal of large masking signal components without otherwise altering the signal. By preventing artifacts, retaining phase information, and removing undesirable signal components, the present invention is a dramatic improvement over existing technology for processing signals to determine the health and performance of operating machines.