This study explores the demographic/background, academic, and environmental factors that predicted student retention after stopping out at a large Hispanic-serving institution in Southern California. The results show that (a) gender, (b) academic background, experience, readiness, and performance, and (c) personal and financial issues predicted retention. We interpret these findings in the context of existing literature and provide suggestions to help institutions develop intervention strategies to promote student retention and “servingness” at HSIs.

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Transducer impulse response is analyzed by introducing two novel elements. First, the usual equivalent circuit of the transducer is replaced by a simple reentrant transmission line configuration. Second, a Feynman diagram method is applied which involves tracing the exciting signal through all possible pathways to the time and place of observation. The theory is applied under various conditions of electrical and acoustical loading, and results compared with computer simulations and physical experiments.

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