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Recent extensions in the computation of Green's functions for multi-layered media and half-space problems are reported. For anisotropic problems, a two-level asymptotic singularity extraction is combined with extended Sommerfeld-related identities and the weighted average approach to provide additional acceleration and smoothing of Sommerfeld integrals for efficient simplex interpolation. For lossy...
In this paper, a two-level asymptotic subtraction method is developed to remove all unbounded singularities that appear in the curl-type layered-medium Green's function (LMGF) for uniaxial media. This allows for a more robust and more accurate interpolation scheme for the efficient evaluation of the curl-type operators in the LMGF.
In order to improve the operation flexibility and reliability of high-voltage circuit breakers (HVCBs) and to realize the full control capability during the opening and closing operations, a new type of motor-drive operating mechanism is investigated in this paper. In this operating mechanism, the travel of the moving contact of HVCB is precisely controlled by controlling the motion of the permanent-magnet...
This paper investigated a new type of operating mechanism in which the high voltage circuit breaker (HVCB) is driven by a permanent magnet synchronous motor (PMSM). This type of mechanism has high reliability due to its simple mechanical structure. In addition, the operating process of the mechanism is controllable. In this paper, the control technique of PMSM was introduced. A simulation model of...
The scalar multiplication is the dominant operation in Elliptic Curve Cryptosystems (ECC). It consists of a series of point additions and point doublings. A number of algorithms have been proposed to accelerate the scalar multiplication. Most of the algorithms demand high complexity which makes scalar multiplication hard to implement. In this paper, we propose an efficient algorithm for computing...
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