Cynthia A. Phillips

This volume tells the story of Tucker County's history through the visual records of its communities, families, and industries. Carved out of Randolph County, Virginia, in 1856, Tucker County's early history played out in the farming communities of the Cheat River Valley. Beginning in 1884, the shrill whistle of industrialist Henry Gassaway Davis's railroad, the West Virginia Central and Pittsburg, woke the area to dramatic changes. New towns like Davis, Thomas, and Parsons grew up and prospered in response to the developing nation's demand for lumber and coal. The collection features the visual evidence of how the political, economic, and natural landscape of Tucker County changed from 1880 to 1960.

Tucker County

Leslie Ann Goldberg

University of Warwick. Dept. of Computer Science

Paul W. Goldberg

Gregory B. Sorkin

Abstract: "There has been much recent algorithmic work on the problem of reconstructing the evolutionary history of biological species. Computer virus specialists are interested in finding the evolutionary history of computer viruses -- a virus is often written using code fragments from one or more other viruses, which are its immediate ancestors. A phylogeny for a collection of computer viruses is a directed acyclic graph whose nodes are the viruses and whose edges map ancestors to descendants and satisfy the property that each code fragment is 'invented' only once. To provide a simple explanation for the data, we consider the problem of constructing such a phylogeny with a minimum number of edges. In general this optimization problem is NP-complete; some associated approximation problems are also hard, but others are easy. When tree solutions exist, they can be constructed and randomly sampled in polynomial time."

Cynthia A. Phillips

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