C. K. Chu

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Domain decomposition (Krylov-Schwarz) iterative methods are proposed for the parallel implicit solution of the unsteady geopotential equation that arises when semi-implicit, semi-Lagrangian (SISL) methods are employed in the long-time integration of the shallow water equations. SISL methods permit timesteps on the scale of Rossby wave dynamics, in contrast(More)
Passivity in a VLSI model is an important property to guarantee stable global simulation. Most VLSI models are naturally described as descriptor systems (DSs) or singular state spaces. Passivity tests for DSs, however, are much less developed compared to their non-singular state space counterparts. For large-scale DSs, the existing test based on linear(More)
Cloud has become very important in internet world. Cloud provides storages, platforms which improves the functionality. Cloud storage shows how securely and flexibly we can store and share our data. This technique introduces a special type of encryption called as key-aggregate cryptosystem which allows user to share their data partially across cloud and(More)
ityl or positive realness in a VLSI model is an important property Passivity in a VLSI model is an important property to guarantee sta-to guarantee stable global simulation [3,7]. Existing DS passivity ble global simulation. Most VLSI models are naturally described tests are restrnctive in different aspects. For example, the extended as descriptor systems(More)
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