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Creators/Authors contains: "Lamberson, Leslie"

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  1. Lissajous figures are parametric equations that deconstruct into equations of simple harmonic motion. They were a source of inspiration by artists and mathematicians alike, well before the digital age, due to their esthetic forms and simple equations that could be easily deconstructed. Here for the first time in literature, we present Lissajous pattern analysis in the context of modern dance movement, thereby expanding the physical understanding of dance and redefining the creative choreographic process. Through the implementation of wearable sensors, specifically wireless accelerometers, we have collected movement data from professional dancers to serve as an additional lens to visualize dance in a novel way and to analyze dance mechanics. The resulting Lissajous figures from the movement phrases were used to both inform and inspire creativity in the choreographic process of the Artistic Director of the Bowen McCauley Dance Company to create a new piece of work entitled Lissajous. 
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  3. Abstract Coupon specimens of poled and depoled lead zirconate titanate (PZT) are examined under combined stress wave and electric loading conditions. Mode‐I crack initiation and fracture behavior is examined using ultrahigh‐speed imaging and two‐dimensional digital image correlation. The dynamic critical stress intensity factor () is extracted using measured displacement fields ahead of the impulsively loaded crack tip, and compared between poled and depoled plates that were either under no electric field, positive 0.46 kV/mm electric field, or negative 0.46 kV/mm electric field. Poled specimens had a poling direction and applied electric field direction normal to the crack front. The addition of an electric field resulted in a crack‐enhancing effect, where the dynamic fracture toughness of poled specimens under0.46 kV/mm was almost half that of samples with no electric field. Depoled samples experienced almost no change in dynamic fracture toughness with the addition of an electric field. 
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