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Autocorrelation sidelobes are a form of self-noise that reduce the effectiveness of phase coding in radar and communication systems. The merit factor is a well-known measure related to the autocorrelation sidelobe energy of a sequence. In this paper an equation is derived that allows the change in the merit factor of a binary sequence to be computed for all(More)
In mouse and rat embryos, the embryonic disc develops within a cup-shaped "egg cylinder" and consists of an inner layer of ectoderm and an outer layer of endoderm. Because of this configuration, the embryo first develops in a dorsally flexed position and then undergoes "axial rotation" to a ventrally flexed position. In the present study, we first analyzed(More)
Day 11 rat embryos produced by overnight and morning short-period breeding regimens were compared for differences in interlitter variability and stage of development. Female Sprague-Dawley rats were mated either overnight (5 PM-9 AM, n = 22) or for 3 hr in the morning (8-10 AM, n = 20), and the presence of a vaginal plug was determined (day 0). At 11 AM on(More)
The radar return from jet engine cavities has been particularly difficult to predict using computational electromagnetics (CEM). At many radar frequencies of interest engine cavities are too electrically large for the use of low-frequency techniques so high-frequency methods such as Shooting and Bouncing Rays (SBR) are used. This paper proposes the(More)
Because there is no standard developmental staging system for the early postimplantation period of rodent embryos, investigators must now choose between a variety of systems that differ significantly. We have reviewed many of these staging systems and have summarized the ambiguities within them and the inconsistencies among them. In order to compare(More)
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