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With the trend from micro- to nanoelectronics the control of production deviations can not keep pace with the reduction of the absolute sizes of semiconductor devices. This results in an increased number of circuits beyond specification. The presented symbolic methods for reducing behavioral models with parameter variations assist designing and optimizing robust electronic circuits to increase the...
An enzymatic substrate reaction with ferroelectric behavior in brain waves model is considered in this article. A random parameter is used to characterize the random factors of ferroelectric behavior. For this kind of stochastic brain waves model we firstly applied orthogonal polynomial approximation to reduce it to its equivalent deterministic one, and then obtain the response of equivalent one by...
An accurate new and simple numeral modeling of nano-scale dual gate n- MOSFET device in the ballistic region is presented. The model and the analysis is performed with channel length below 20 nm where electron transport is predominantly ballistic. In this paper a new developed modeling approach based on Boltzmann transport equation and Poisson equation in an n-channel nanoscale double-gate MOSFET...
Several mathematical models have been developed to express glioma growth behavior. The most successful models have used the diffusion-reaction equation, with the most recent ones taking into account spatial heterogeneity and anisotropy. However, to the best of our knowledge, there hasn't been any work studying in detail the mathematical solution and implementation of the 3D diffusion model, addressing...
We propose an improved model for TCP flow level congestion performance. Conventional fluid approximation models yield incorrect results for TCP congestion at the flow level due to throughput overestimation. We introduce a more accurate model incorporating some of the packet level burstiness, by approximating TCP sources as on-off fluid sources. Our model is largely based on the work of D. Anick, D...
An extended finite element simulation (X-FEM) framework for cutting models is presented. Based on the existing work, a simplified approach to deal with the multiple cuts in a element is proposed. Meanwhile, the simulating method of cutting large deformation models is expressed for the application of computer graphics and virtual reality. Other related issues are also discussion, such as the mass matrix...
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