4,571 research outputs found

    Honouring the wound: war and performance in the lives of Hannah Snell, Deborah Sampson and Pauline Cushman

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    This essay investigates three women’s cross-dressed service in the military. Hannah Snell (1723-92) served as a British marine and fought the French in India. Deborah Sampson Gannet (1760-1827) fought the British in the American Wars of Independence and Pauline Cushman (1833-1893) claimed to have disguised herself for the Union during the American Civil War. These three are, by no means, the only women to claim action and remuneration as male combatants (Jelinek 53-62), when the legal extent of women’s engagement was as unpaid camp followers. However, all three gave accounts of their military exploits to the public through biographies and solo performances on stage

    On K\"ahler conformal compactifications of U(n)U(n)-invariant ALE spaces

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    We prove that a certain class of ALE spaces always has a Kahler conformal compactification, and moreover provide explicit formulas for the conformal factor and the Kahler potential of said compactification. We then apply this to give a new and simple construction of the canonical Bochner-K\"ahler metric on certain weighted projective spaces, and also to explicitly construct a family Kahler edge-cone metrics on CP2\mathbb{CP}^2, with singular set CP1\mathbb{CP}^1, having cone angles 2πβ2\pi\beta for all β>0\beta>0. We conclude by discussing how these results can be used to obtain certain well-known Einstein metrics.Comment: 14 page

    Phase-locking at low-level of quanta

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    We discuss phase-locking phenomena at low-level of quanta for parametrically driven nonlinear Kerr resonator (PDNR) in strong quantum regime. Oscillatory mode of PDNR is created in the process of a degenerate down-conversion of photons under interaction with a train of external Gaussian pulses. We calculate the Wigner functions of cavity mode showing two-fold symmetry in phase space and analyse formation of phase-locked states in the regular as well as the quantum chaotic regime.Comment: 6 pages, 4 figure

    Mechanization of and experience with a triplex fly-by-wire backup control system

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    A redundant three-axis analog control system was designed and developed to back up a digital fly-by-wire control system for an F-8C airplane. Forty-two flights, involving 58 hours of flight time, were flown by six pilots. The mechanization and operational experience with the backup control system, the problems involved in synchronizing it with the primary system, and the reliability of the system are discussed. The backup control system was dissimilar to the primary system, and it provided satisfactory handling through the flight envelope evaluated. Limited flight tests of a variety of control tasks showed that control was also satisfactory when the backup control system was controlled by a minimum-displacement (force) side stick. The operational reliability of the F-8 digital fly-by-wire control system was satisfactory, with no unintentional downmodes to the backup control system in flight. The ground and flight reliability of the system's components is discussed

    Mechanization of and experience with a triplex fly-by-wire backup control system

    Get PDF
    A redundant three axis analog control system was designed and developed to back up a digital fly by wire control system for an F-8C airplane. The mechanization and operational experience with the backup control system, the problems involved in synchronizing it with the primary system, and the reliability of the system are discussed. The backup control system was dissimilar to the primary system, and it provided satisfactory handling through the flight envelope evaluated. Limited flight tests of a variety of control tasks showed that control was also satisfactory when the backup control system was controlled by a minimum displacement (force) side stick. The operational reliability of the F-8 digital fly by wire control system was satisfactory, with no unintentional downmodes to the backup control system in flight. The ground and flight reliability of the system's components is discussed
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