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Now showing items 129 - 144 of 372

  • Monopulse azimuth radar system for automotive vehicle tracking

    A monopulse vehicular radar system for tracking a target about an automotive vehicle senses a transmitted signal reflected back from the target and received at two different locations, determines the sum and the difference of the reflected signals sensed at the two locations, and compares the sum and difference to determine the deviation of the target from a reference azimuth. A source frequency provided by a Gunn diode is applied to and transmitted by a two-lobe monopulse antenna. The antenna lobes detect the reflected signals from the target by sensing them at the two different lobes. A hybrid junction provides sum and difference signals to mixers which homodyne the signals to produce sum and difference Doppler frequency signals using the source frequency. The Doppler frequency signals are amplified and then compared to determine the deviation of the target from the reference azimuth. The comparison process can be done digitally by converting the amplified frequency signals to digital signals which are then processed in a digital signal processor, or the comparison may be done in analog fashion using a phase/quotient detector. The range or distance of the target is determined by shifting the source frequency between two frequencies during transmission and frequency shifting the sum and difference Doppler frequency signals in similar fashion following reception by the antenna.
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  • Method of maximizing data pin usage utilizing post-buffer feedback

    An improved programmable logic device programmed to maximize pin usage, and a method of using such a programmable logic device. The programmable logic device is programmed to use a data pin as an input pin by disabling the output buffer driving that pin. Then, when it is desired to drive the data pin as an output pin, the output buffer is enabled, and the pin is driven by a signal generated by the combinatorial logic on the programmable logic device.
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  • Method of making an elastic waistband with releasably secured drawstring

    A stretchable composite strip material comprising coextensive lengths of a band of elastic material and a stretchable non-elastic drawstring formed of textile material, and means releasably securing said drawstring alongside said band in lengthwise-bulked condition to medial portions of the elastic band is provided. The composite strip may be formed into a composite endless loop and incorporated into a garment. An apparatus and method for making the composite strip material is also provided.
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  • Green metaphysics: A sustainable and renewable liberal arts education

    Tubbs   Nigel  

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  • What is clinical anatomy?

    Tubbs   R. Shane  

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  • My Friend Ilan Gur Ze’ev

    Tubbs   Nigel  

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  • The heart is simply a muscle

    Tubbs   R. Shane  

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  • “But chieflye the anatomye”

    Tubbs   R. Shane  

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  • Fire resistant hydraulic fluids

    Fire resistant hydraulic fluid compositions comprising (a) one or more esters of polyhaloaromatic acids per se or in combination with (b) one or more hydraulic fluids independently selected from mineral oil, poly-.alpha.-olefins, alkylated aromatics, cycloaliphatics, esters of dibasic acids, polyol esters, polyglycols, silicones, silicate esters, phosphate esters, and halogenated compositions other than (a); a method for imparting fire resistant properties to known hydraulic fluids by adding one or more esters of polyhaloaromatic acids alone or combined; and the use of the inventive compositions as fire resistant hydraulic fluids. The fire resistant compositions may, optionally, contain one or more shear-stable polymers which have been found to increase the fire resistance of the hydraulic fluid composition.
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  • Humanitas\r , Metaphysics and Modern Liberal Arts

    Tubbs   Nigel  

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  • Anatomy. The Oldest Child of Mother Medicine

    Tubbs   R. Shane  

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  • Nerves and Nerve Injuries || Preface

    Tubbs   R. Shane  

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  • Nerves and Nerve Injuries || Anatomy of the Glossopharyngeal Nerve

    Tubbs   R. Shane  

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  • “Anatomy and the Votary of Medicine”

    Tubbs   R. Shane  

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  • Variety and Delicacy of Animal Mechanism

    Tubbs   R. Shane  

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  • “The chirurgeon must knowe the anatomie”

    Tubbs   R. Shane  

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