a fundamental topic in computational fluid dynamics is the role of coordinate particularly for searching optimized coordinates. the objective of this study is the numerical modeling of supersonic flows using a new coordinate system i.e. unified coordinate system (ucs) uses moving mesh with motionless viewing window technique. ucs has an advantage over traditional coordinate systems (eulerian an...

Boussinesq type equations have been widely studied to model the surface water wave. In this paper, we consider abcd system which is a family of including many well-known models such as classical system, BBM-BBM Bona-Smith etc. We propose local discontinuous Galerkin (LDG) methods, with carefully chosen numerical fluxes, numerically solve system. The main focus paper rigorously establish priori ...

We compare three commercial Machine Translation (MT) systems, Power Translator Pro, SYSTRAN, and T1 Langenscheidt, with the research hybrid, statistical and rule-based system, METIS-II, with respect to identification of idioms. Firstly, we make a distinction between continuous (adjacent constituents) and discontinuous idioms (non-adjacent constituents). Secondly, we describe our idiom resources...

For input nonaffine nonlinear control systems, the minimum phase property of the system in general depends on the control law. Switching or discontinuous controllers may offer advantages in this context. In particular, there may not exist a continuous control law which would keep the output identically equal to zero and for which the zero output constrained dynamics are locally stable, whereas ...

A dynamometer capable of emulating linear, nonlinear and discontinuous loads for rotating systems is described. The controllable load is produced by a servo drive system. Applications for the dynamometer are steady state load tests and dynamical load tests with linear, non-linear or discontinuous loads for testing of electrical machines in variable speed drive systems. The configuration of the ...