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A combined algorithm which has global and local optimization capabilities is applied to a statistical orbit determination problem. The objective is to estimate initial states of a near-earth satellite nonlinear dynamical system, as well as unknown parameters, by using discrete observations. A particle swarm optimizer is the selected global search tool, and(More)
  • Greg Stratmann, Jeffrey W Sall, Laura D V May, Joseph S Bell, Kathy R Magnusson, Vinuta Rau +5 others
  • 2009
BACKGROUND Anesthetic agents cause cell death in the developing rodent brain and long-term, mostly hippocampal-dependent, neurocognitive dysfunction. However, a causal link between these findings has not been shown. Postnatal hippocampal neurogenesis affects hippocampal function into adulthood; therefore, the authors tested the hypothesis that isoflurane(More)
  • Greg Stratmann, Jeffrey W Sall, Joseph S Bell, Rehan S Alvi, Laura d V May, Ban Ku +7 others
  • 2010
BACKGROUND Roughly, 10% of elderly patients develop postoperative cognitive dysfunction. General anesthesia impairs spatial memory in aged rats, but the mechanism is not known. Hippocampal neurogenesis affects spatial learning and memory in rats, and isoflurane affects neurogenesis in neonatal and young adult rats. We tested the hypothesis that isoflurane(More)
— In this paper the problem of optimal path planning and power allocation for an Unmanned Aerial Vehicle (UAV) is explored. The UAV is equipped with photovoltaic cells on top of its wings and its energy sources are solar power and rechargeable batteries. The Sun incidence angle on the photovoltaic cells, which subsequently affects energy harvesting, is(More)