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- Ashok T. Amin, Lane H. Clark, Peter J. Slater
- Discrete Mathematics
- 1998

- Kyle Siegrist, Ashok T. Amin, Peter J. Slater
- Discrete Applied Mathematics
- 1993

- Ashok T. Amin, Kyle Siegrist, Peter J. Slater
- Networks
- 1991

- Ashok T. Amin, Kyle Siegrist, Peter J. Slater
- Networks
- 1993

Let G be a probabilistic (n,m) graph in which each vertex exists independently with fixed probability p , 0 < p < 1. Pair-connected reliability of G, denoted PC,(G;p), is the expected number of connected pairs of vertices in G. An (n.m) graph G is uniformly optimally reliable i f PC,(G;p) 2 PC,(H;p) for all p, 0 < p < 1, over all (n,m) graphs H. It is shown… (More)

- Suk Jai Seo, Ashok T. Amin
- ACM Southeast Regional Conference
- 2004

Let (<i>G</i>, <i>R</i>) denote the directed graph obtained from undirected graph <i>G</i> by an acyclic orientation <i>R</i> so that (<i>G</i>, <i>R</i>) contains no directed cycle. We consider acyclic orientations <i>R</i> of a unicyclic graph <i>G</i> which maximizes/minimizes the number of ordered pairs of non-adjacent vertices with directed paths in… (More)

- Ashok T. Amin
- The Southeast Asian journal of tropical medicine…
- 1992

One paradox in the recent pattern of urbanization in Asia is 'metropolisation' and 'informalization'. This is paradoxical since growth and development of a metropolis is expected to reduce its traditional or informal sector. From available evidence, this paper shows that metropolisation in Asia, instead of reducing the size of informal sector, is rather… (More)

- Ashok T. Amin
- IEEE Trans. Computers
- 1977

Grey-level transformations on digitized images are variously used to minimize storage requirements or to enhance low-level contrast information. A graph-theoretic approach is proposed to implement these transformations. In particular, an efficient algorithm is given for transformation leading to almost uniform grey-level distribution.

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