66 research outputs found

    Cost-efficient performance-vesting equity

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    We analyze the incentive effects of the Performance-Vesting Equity (PVE) component of executive pay that is characterized by zero exercise price and performance-contingent vesting. We demonstrate how PVE with upward-sloping convex/concave vesting curves can be a more efficient risk-sharing and incentive alignment device than strictly convex stock options

    Toroidal mirror system

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    A study is made of a toroidally linked mirror system with a zero rotational transform and a three-dimensional magnetic field that ensures good confinement of charged particles. A toroidally linked magnetic mirror configuration at low plasma pressures is calculated by numerically solving the isometry equation for the magnetic field to second order in the small parameter of the paraxial approximation. The calculations carried out with the VMEC code for a particular linked magnetic mirror configuration demonstrate the possibility of achieving good confinement of drifting particles. The calculated results show that it is, in principle, possible to link mirror cells into a toroidal configuration capable of providing plasma confinement at a tokamak level. (C) 2002 MAIK "Nauka/Interperiodica"
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