The Internet provides individuals with disabilities numerous tools to live independently. In the convenience of the home, a person can access an abundance of information, an electronic community, updates on the latest disability advocacy news, education through distance-learning classes, and on-line shopping for books, clothes, assistive technology, and a host of other consumer goods. Centers f...

The number of US veterans with disabilities has increased in recent years as service members have returned home with extensive injuries and veterans from previous wars acquire functional limitations as a consequence of aging with chronic diseases. Veterans with severe disabilities need assistance and support to maintain independence at home and to avoid institutionalization. The US Department o...

Given an i.i.d. sequence of n letters from a finite alphabet, we consider the length of the longest run of any letter. In the equiprobable case, results for this run turn out to be closely related to the well-known results for the longest run of a given letter. For coin-tossing, tail probabilities are compared for both kinds of runs via Poisson approximation.

Vertebrate and Drosophila Iroquois genes are organized in clusters of 3 genes sharing blocks of conserved regulatory sequences. Here, we report a 3-gene cluster in the basal, preduplicative chordate amphioxus. Surprisingly, however, the origin of the amphioxus cluster is independent of those in vertebrates and drosophilids. Investigation of genomic organization of Iroquois genes in other 17 met...