Missouri University of Science and Technology (Missouri S&T): Scholars' Mine

    A neural network methodology for path planning and coordination of car-like robots

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    A car-like indoor mobile robot is a kinematically constrained robot that can be modeled as a 2D object translating and rotating in the horizontal plane among well- defined obstacles. The kinematic constraints impose that the linear velocity of the robot is along its main axis (no sideways motion is possible) and restrict the range of admissible values for the steering angle. The goal of this study is to combine neural network techniques and motion planning algorithms to create a new methodology for coordinating the motion of multiple car-like robots avoiding collision with polygonal obstacles in a work environment. An incremental technique is used to develop this methodology. First, a strategy for planning the path of a point robot moving in the presence of obstacles is constructed. Second, this strategy is adapted to path planning for a polygonal robot. Third, holonomic and non-holonomic constraints are imposed on the robot and the method is further refined. Finally, a plan for the coordinated motion of multiple car-like robots is devised through use of the concept of coordination space --Abstract, page iii

    Glass fiber reinforced polycarbonate composites

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    The purpose of this work was to develop a transparent glass fiber reinforced polymer composite material which is superior to the transparent unreinforced thermoplastic in mechanical properties but similar in optical clarity. Polycarbonate matrix composite specimens containing 0 to 40 wt% SK-12 glass fiber were studied, with mechanical and optical properties determined as a function of glass fiber content. The mechanical properties -- flexural strength and elastic modulus increased with increasing glass fiber content. The optical properties -- transmission and transparency decreased with increasing glass fiber content. The factors which influence the mechanical and optical properties were investigated --Abstract, page ii

    Policy - Scholars\u27 Mine Collection Development

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    This policy provides guidance for content selection for our institutional repository (Scholars’ Mine). The purpose of this policy is to anticipate and meet the research support and information access needs of our campus community

    The Missouri Miner, October 25, 1957

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    https://scholarsmine.mst.edu/missouri_miner/2570/thumbnail.jp

    The Missouri Miner, March 15, 1957

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    https://scholarsmine.mst.edu/missouri_miner/2557/thumbnail.jp

    Focus Energy Determination of Mining Microseisms using Residual Seismic Wave Attenuation in Deep Coal Mining

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    Based on the energy attenuation characteristics of residual wave in deep rock, a method was developed to determine the microseismic focus energy. Differential energy loss in infinitesimal spreading distance is logically deduced, upon which energy attenuation equation was established. With a logarithmic transformation, a linear relation of the residual seismic energy with distance is formulated. Its intercept was used to determine the microseismic focus energy. The result is compared with that determined by the energy density method. The reliability of the determined focus energy and the impact of the built-in velocity threshold on the residual wave energy computation are discussed. Meanwhile, the energy absorption coefficient used for representing the absorption characteristics of the rock medium in the mining region under study is also clarified. Key findings show that the microseismic focus energy confirmed by the residual wave attenuation is reliable. The result\u27s accuracy is quite high, especially for the events in deep rock with great homogeneity. The developed focus energy computation method is closely dependent on the integrity of waveform, accuracy of repositioning, and reliability of effective components extraction. The new method has been shown to be effective and practical

    The Missouri Miner, March 09, 1917

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    https://scholarsmine.mst.edu/missouri_miner/1130/thumbnail.jp

    The Missouri Miner, May 04, 1917

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    https://scholarsmine.mst.edu/missouri_miner/1138/thumbnail.jp

    The Missouri Miner, January 28, 1921

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    https://scholarsmine.mst.edu/missouri_miner/1229/thumbnail.jp

    The Missouri Miner, November 09, 1917

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    https://scholarsmine.mst.edu/missouri_miner/1099/thumbnail.jp
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