Nicholas Cox

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The photosynthetic protein complex photosystem II oxidizes water to molecular oxygen at an embedded tetramanganese-calcium cluster. Resolving the geometric and electronic structure of this cluster in its highest metastable catalytic state (designated S3) is a prerequisite for understanding the mechanism of O-O bond formation. Here, multifrequency,(More)
— This paper addresses the problem of hybrid output regulation for linear systems in the case where the jumps of the system and exosystem state are triggered by a clock variable that is not measured. We extend the result presented in [13] by complementing the hybrid internal model-based regulator design proposed in that paper with a hybrid clock phase(More)
— We consider the hybrid output regulation problem for minimum phase linear systems with relative degree greater than one. In the hybrid output regulation problem, the disturbances, which are assumed to be matched with the control input, evolve through a hybrid dynamical system that experiences jumps periodically. In constructing an output regulator for(More)
  • Sebastian Sovero, Nihar Talele, Collin Smith, Nicholas Cox, Tim Swift, Katie Byl
  • 2016
We present experimental data for an ankle exoskeleton that provides a metabolic benefit during running. Intuitively, there is an optimal level of power that any particular human can accept and use to benefit walking or running, which is a function of the particular human, the selected gait, and speed. We provide and discuss modeling optimization results to(More)
BACKGROUND Hospital admissions for heart failure are predicted to rise substantially over the next decade placing increasing pressure on the health care system. There is an urgent need to redesign systems of care for heart failure to improve evidence-based practice and create seamless transitions through the continuum of care. The aim of the review was to(More)
  • Marios Georgios, Chrysanthou, Mark Stewart, Pierre-Carl Michaud, Francis Vella, Ras-Mus Jørgensen +11 others
  • 2008
Using a dynamic model of unionism and wage determination we …nd that the unob-served factors that in ‡uence union membership also a¤ect wages. The estimates suggest that UK trade unions still play a non-negligible, albeit diminishing, role in wage formation. It appears that the greater impact of unobservables in determining individual union propensity(More)
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