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- G R White, R Ainsworth, +88 authors F Zimmermann
- Physical review letters
- 2014

A novel scheme for the focusing of high-energy leptons in future linear colliders was proposed in 2001 [P. Raimondi and A. Seryi, Phys. Rev. Lett. 86, 3779 (2001)]. This scheme has many advantageous properties over previously studied focusing schemes, including being significantly shorter for a given energy and having a significantly better energy… (More)

- Jung-Hong Chuang, Wei-Chung Hwang
- The Visual Computer
- 1997

Radius blends, very important in geometric and solid modeling, can be seen as the trimmed envelope of a rolling sphere or a sweeping circle with a constant or variable radius that centers on a spine curve and touches the surfaces to be blended along the linkage curves. Usually, in variable-radius blending, the radius is difficult to specify, and the spine… (More)

- Jung-Hong Chuang, Ching-Huei Lin, Wei-Chung Hwang
- The Visual Computer
- 1995

The radius blend is a popular surface blending because of its geometric simplicity. A radius blend can be seen as the envelope of a rolling sphere or sweeping circle that centers on a spine curve and touches the surface to be blended along the linkage curves. For a given pair of base surfaces in parametric form, a reference curve, and a radius function of… (More)

An approach to the measurement of distortion in hearing aids is presented. Distortion is first defined in general terms. The technique is then applied to the specific problem of predicting the detectability of non-linear distortion. Distortion indices have been obtained for two common, but very different forms of distortion: peak clipping (common to most… (More)

- Wei-Chung Hwang, Jung-Hong Chuang
- J. Inf. Sci. Eng.
- 2003

To fill an N-sided hole on a NURBS surface and to blend a corner formed by NURBS surfaces, we propose a regular N-sided open uniform quadratic subdivision surface derived by applying the open uniform quadratic subdivision scheme to a regular N-sided control mesh which is confined to the hole or to the region of the vertex blend. Boundary conditions such as… (More)

- Jung-Hong Chuang, Christoph M. Hoffmann, Kun-Ming Ko, Wei-Chung Hwang
- The Visual Computer
- 1998

-dimensional space, where n>3. This definition can be used for given surfaces that are implicit or parametric. This paper presents a robust, adaptive polygonization algorithm for evaluating and visualizing geometrically constrained surfaces. Let be the constrained surface, a 2-surface in n-space, and let π( ) be its projection into the subspace spanned by… (More)

- P. Bambade, M. Alabau Pons, +90 authors F. Zhou
- 2010

P. Bambade,* M. Alabau Pons, J. Amann, D. Angal-Kalinin, R. Apsimon, S. Araki, A. Aryshev, S. Bai, P. Bellomo, D. Bett, G. Blair, B. Bolzon, S. Boogert, G. Boorman, P. N. Burrows, G. Christian, P. Coe, B. Constance, J.-P. Delahaye, L. Deacon, E. Elsen, A. Faus-Golfe, M. Fukuda, J. Gao, N. Geffroy, E. Gianfelice-Wendt, H. Guler, H. Hayano, A.-Y. Heo, Y.… (More)

- Wei-Chung Hwang, Jung-Hong Chuang
- J. Inf. Sci. Eng.
- 2003

The ability to control boundary behaviors is critical for the subdivision surface to become a useful representation in computer aided geometric design. Previous methods achieve boundary control by extending the boundary vertices of the control mesh, or by applying different subdivision rules to the boundary edges and vertices. This paper presents an open… (More)

- Y. I. Kim, R. Ainsworth, +26 authors G. R. White
- 2012

Y. I. Kim, R. Ainsworth, A. Aryshev, S. T. Boogert,* G. Boorman, J. Frisch, A. Heo, Y. Honda, W.H. Hwang, J. Y. Huang, E-S. Kim, S. H. Kim, A. Lyapin, T. Naito, J. May, D. McCormick, R. E. Mellor, S. Molloy, J. Nelson, S. J. Park, Y. J. Park, M. Ross, S. Shin, C. Swinson, T. Smith, N. Terunuma, T. Tauchi, J. Urakawa, and G. R. White Kyungpook National… (More)

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