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- Hung-Ting Liu, Tony W. H. Sheu, Herng-Hua Chang
- Medical & Biological Engineering & Computing
- 2013

Skull-stripping in magnetic resonance (MR) images is one of the most important preprocessing steps in medical image analysis. We propose a hybrid skull-stripping algorithm based on an adaptive balloon snake (ABS) model. The proposed framework consists of two phases: first, the fuzzy possibilistic c-means (FPCM) is used for pixel clustering, which provides a… (More)

In this paper we consider a passive scalar transported in two-dimensional flow. The governing equation is that of the convection–diffusion–reaction equation. For purposes of computational efficiency, we apply an alternating-direction implicit scheme akin to that proposed by Polezhaev. Use of this implicit operator-splitting scheme allows the application of… (More)

- Pao-Hsiung Chiu, Long Lee, Tony W. H. Sheu
- J. Comput. Physics
- 2009

The paper presents an iterative algorithm for studying a nonlinear shallow-water wave equation. The equation is written as an evolution equation, involving only first-order spatial derivatives, coupled with the Helmholtz equation. We propose a two-step iterative method that first solves the evolution equation by the implicit midpoint rule and then solves… (More)

- Pao-Hsiung Chiu, Reui-Kuo Lin, Tony W. H. Sheu
- J. Comput. Physics
- 2010

- Tony W. H. Sheu, Y. H. Chen
- Applied Mathematics and Computation
- 2002

In this paper, we focus on the development of a finite element model for predicting the contaminant concentration governed by the advective–dispersive equation. In this study, we take into account the first-order degradation of the contaminant to realistically model the transport phenomenon in groundwater. To solve the resulting unsteady advection–diffusion… (More)

- Amalendu Sau, Tony W H Sheu, Robert R Hwang, W C Yang
- Physical review. E, Statistical, nonlinear, and…
- 2004

Direct numerical simulations are performed to predict the three-dimensional unsteady flow interactions in the near-field of a square jet issuing normal to a cross-flow. The simulated flow features reveal the formation of an upstream horseshoe vortex system, which is the result of an interaction between the oncoming channel floor shear layer and the… (More)

- Pao-Hsiung Chiu, Tony W. H. Sheu, Reui-Kuo Lin
- J. Comput. Physics
- 2008

- C. H. Yu, Yogesh G. Bhumkar, Tony W. H. Sheu
- J. Sci. Comput.
- 2015

- Roberto Camassa, Pao-Hsiung Chiu, Long Lee, Tony W. H. Sheu
- J. Comput. Physics
- 2010

We investigate solution properties of a class of evolutionary partial differential equations (PDEs) with viscous and inviscid regularization. An equation in this class of PDEs can be written as an evolution equation, involving only first-order spatial derivatives, coupled with the Helmholtz equation. A recently developed two-step iterative method (Chiu et… (More)