Abstract: Described herein are systems, methods, and computer-readable medium for magnetic resonance (MR) based thermometry. A method for magnetic resonance based thermometry includes: acquiring, by a variable flip-angle T1 mapping sequence, MR data in an area of interest of a subject that is heated by the application of focused ultrasound (FUS) to the brain of the subject, where the MR data includes T1 values over time, and where the acquisition of the MR data includes applying an accelerated three-dimensional ultra-short spiral acquisition sequence with a nonselective excitation pulse; tracking changes in proton resonance frequency and determining, based at least in part on a mathematical relationship established by T1 mapping thermometry, a temperature change in the area of interest over time, and where the temperature change is caused at least in part by a change in the applied FUS.

Abstract: Range finder for determining the distance between the user and an object of known height or width, such as a golf flagstick, structure, etc. The range finder is a flat card, having a series of graduated apertures, each aperture being dimensioned to correspond to a particular distance to the flagstick. Range information is provided for each aperture. The user holds the card 24 inches from the eye and sights the flagstick through the apertures. The range information for the aperture whose diameter most closely corresponds to the height of the sighted flagstick is the actual distance between the user and the flagstick. The apertures are graduated in size, to represent range information in specific increments. The size of the increments is selected to facilitate optimal performance and may vary within a series of apertures.

Abstract: Range finder for determining the distance between the user and an object of known height or width, such as a golf flagstick, structure, etc. The range finder is a flat card, having a series of graduated apertures, each aperture being dimensioned to correspond to a particular distance to the flagstick. Range information is provided for each aperture. The user holds the card 24 inches from the eye and sights the flagstick through the apertures. The range information for the aperture whose diameter most closely corresponds to the height of the sighted flagstick is the actual distance between the user and the flagstick. The apertures are graduated in size, to represent range information in specific increments. The size of the increments is selected to facilitate optimal performance and may vary within a series of apertures.

Abstract: An audio communications control system operates between multiple voice communications systems and a single headset worn by an operator accessing the multiple communications systems via voice transmission. The single headset includes a left speaker, a right speaker, and a microphone. The audio interface provides an electrical connection and operation with each of the voice communications systems, even though each may operate with differing equipment and signal processing. The audio interface switches discrete voice communications signals and routes them to one of the left speaker, the right speaker, and conversely from the microphone of the headset to any of selected systems.

Abstract: Prior art supported, load bearing concrete panels having flexural reinforcing materials within the top and bottom halves, are over-designed, and experience increased deterioration and increased severity of cracks in the top surface due to flexural reinforcing materials which are located within the top half of the panel. It is now taught that, by removing flexural reinforcing materials which are intended to carry carrying bending moment tension stresses in the top half of panels (12), over supports (14), while maintaining such flexural reinforcing materials (20) confined to the lower half of the panel, does not reduce the flexural strength of the panel (12) below that which is required to support expected loads. Such panels (12), without flexural reinforcing materials in the top half, exhibit improved durability and reduced top surface (16) cracking, and can be produced with fewer production steps and with reductions in the cost of materials.

Abstract: The present invention provides a method and system of providing a response from a local source to a query placed in a query box. The method involves the steps of linking a query box located on a network site through a network such as the Internet to a first server. This query is received by a server and then analyzed to determine the location of the person entering the query. The system or method locates a respondent to answer the person's query wherein the respondent is geographically the nearest respondent to the person within a given jurisdiction. The present invention then forwards the query to that respondent.

Abstract: Prior art supported, load bearing concrete panels having flexural reinforcing materials within the top and bottom halves, are over-designed, and experience increased deterioration and increased severity of cracks in the top surface due to flexural reinforcing materials which are located within the tip half of the panel. It is now taught that existing deteriorated concrete panels can be reconstructed by removing the upper concrete containing the upper layer of flexural reinforcing means for carrying bending moment tension stressed in the top half of panels (12), over interior supports (14), while maintaining such flexural reinforcing means (20) confined to the lower half of the panel, has sufficient flexural strength of the panel (12) to support expected loads. Such panels (12), will exhibit improved durability and reduced tip surface (16) cracking. Preferred techniques for controlling top half cracking from temperature and shrinkage of the panel are set forth.

Abstract: A software controlled generic radar display system using a microcomputer ing a high performance graphics card that drives a high resolution color monitor which displays the radar sweep, compass rose, front panel symbology and diagnostic information. A target generator provides simulated target information that is displayed on the monitor in standard PPI format.

Abstract: A mechanism for encoding continuously moving documents. Documents are transported between a plurality of fixed dies and a plurality of electronically controlled hammers. An ink bearing ribbon is interposed between the documents and the fixed dies and is momentarily transported at the same velocity as the documents. As the documents traverse the plurality of fixed dies, the electronically controlled hammers are cycled, in a selected sequence and at selected positions, to provide the desired encoding. In those applications wherein the cycle time of the electronically controlled hammers is too slow to allow identical encoding in adjacent positions, a second plurality of fixed dies and electronically controlled hammers may be located adjacent to the first plurality or interspersed among the first plurality of fixed dies.

Abstract: A compensation system for use in a helmet mounted raster projection system tilizes a microprocessor to control the offset position of the raster line and frame scanners, thereby increasing the stability of the viewed scene. The microprocessor calculates control words which are fed to the scanners via digital to analog converters during the vertical sync of the raster scan. The microprocessor calculates the control words from pilot look data obtained by head and eye trackers compared to previous similar data.

Abstract: A serial to parallel data conversion interface circuit is disclosed for certing a serial word supplied by a head tracker to a parallel word so as to allow for the processing of the parallel word by a microprocessor. The head tracker supplies to the interface circuit a data ready pulse signal. The interface circuit, in response to the data ready pulse signal, supplies a data acknowledge pulse signal and a clock signal to the head tracker so as to allow the serial word from the head tracker to be transferred to the interface circuit, which then converts the serial word to a parallel word. An enable pulse signal supplied to the interface circuit effects the transfer of the parallel word from the interface circuit to the microprocessor. A reset pulse from the microprocessor then resets the interface circuit so as to allow for the transfer of another serial word from the head tracker.

Abstract: A data buffer circuit is disclosed for receiving from a serial-to-parallel ata conversion interface circuit a plurality of sixteen-bit parallel data words, for storing therein for a predetermined time period each of the parallel data words, and for transferring to a computer, so as to allow for processing by the computer, each of the parallel data words.

Abstract: A high speed digital to analog converter circuit for converting a plurality f data bytes to corresponding analog signals at very high conversion rates. A computer image generator provides in response to each clock pulse of a first clock signal a set of eight data bytes. Each set of data bytes are then latched alternatively in first storage means or second storage means. Multiplexing means alternatively samples each set of data bytes latched in said first and second storage means, and an octet of digital to analog converters then converts each set of data bytes to a corresponding set of eight analog signals. Gating means, in turn, sequentially passes each set of analog signals so as to form at its output a video information signal which may be utilized to activate an image display apparatus.

Abstract: A pattern generator for simulating image generation is disclosed which pets the testing of wide angle, non-programmed visual display systems including, for example, a 360.degree. non-programmed visual display system. The program generator produces a pair of composite signals, the first of which may be utilized by an annular projector to project upon a screen a sawtooth waveform pattern, and the second of which may be utilized by the annular projector to project upon the screen a checkerboard pattern so as to facilitate the testing of wide angle visual display systems.

Abstract: A computer generated image simulator is disclosed for scanning a visual target and then providing a visual image of the target which is to be displayed upon a reflective display screen such that a trainee pilot may observe the target. A head tracker which monitors the position of the trainee pilot's head, and an eye tracker which monitors the position of the trainee pilot's eyes, respectively provide head and eye orientation signals to be processed by electronic circuitry such that the target which is projected upon the reflective display screen by a helmet mounted projector will be orientated upon the screen in accordance with the orientation of the trainee pilot's head.

Abstract: A sawtooth waveform circuit for a cathode ray tube display apparatus or the ike is disclosed for providing a sawtooth waveform signal in synchronization with the uniformly spaced pulses of a sync signal. A direct current voltage is supplied to an integrator which produces a ramp voltage. Switching means responsive to each pulse of the sync signal shorts the integrator so as to cause the ramp voltage to appear at the output of the integrator as a sawtooth waveform signal. A summing amplifier amplifies the sawtooth waveform signal, and then combines the amplified sawtooth waveform signal with a variable direct current voltage generated by a head tracker so as to provide at the output of the summing amplifier a raster drive signal.

Abstract: A mechanism for encoding continuously moving documents. Documents are transported between a plurality of fixed dies and a plurality of electronically controlled hammers. An ink bearing ribbon is interposed between the documents and the fixed dies and is momentarily transported at the same velocity as the documents. As the documents traverse the plurality of fixed dies, the electronically controlled hammers are cycled, in a selected sequence and at selected positions, to provide the desired encoding. In those applications wherein the cycle time of the electronically controlled hammers is too slow to allow identical encoding in adjacent position, a second plurality of fixed dies and electronically controlled hammers may be located adjacent to the first plurality or interspersed among the first plurality of fixed dies.