A Watson-Crick automaton is recently introduced as a computational model of DNA computing framework. It works on tapes consisting of double stranded sequences of symbols. Symbols placed on the corresponding cells of the double-stranded sequences are related by a complimentary relation. In this paper, we investigate a variation of Watson-Crick automata in which both heads read the tape in revers...

A conditioned Galton–Watson tree is a random rooted tree that is (or has the same distribution as) the family tree of a Galton–Watson process with some given offspring distribution, conditioned on the total number of vertices. We let ξ be a random variable with the given offspring distribution; i.e., the number of offspring of each individual in the Galton–Watson process is a copy of ξ. We let ...

DNA strands that, mathematically speaking, are finite strings over the alphabet {A, G, C, T} are used in DNA computing to encode information. Due to the fact that A is Watson-Crick complementary to T and G to C, DNA single strands that are Watson-Crick complementary can bind to each other or to themselves in either intended or unintended ways. One of the structures that is usually undesirable f...

IBM Watson is a cognitive computing system capable of question answering in natural languages. It is believed that IBM Watson can understand large corpora and answer relevant questions more effectively than any other question-answering system currently available. To unleash the full power of Watson, however, we need to train its instance with a large number of wellprepared question-answer pairs...

In this paper, we introduce a new model of deterministic Watson-Crick automaton namely restricted deterministic WatsonCrick automaton which is a deterministic Watson-Crick automaton where the complementarity string in the lower strand is restricted to a language L. We examine the computational power of the restricted model with respect to L being in different language classes such as regular, u...

Many readers will recognize these as the first words ever transmitted by telephone. The Watson on the other end of the line was Thomas A. Watson, Bell’s assistant. Over a century later, we may soon be hearing these words again, this time at the hospital. But this time the Watson on the other end may not be a person but a machine: IBM’s Watson, a state-of-the-art computer system capable of answe...

This article examines corporate labor and gender relations in transatlantic perspective. It is argued that the gendered communication of IBM’s Thomas Watson, Sr. shaped labor relations in his company’s West German subsidiary. In the United States, Watson acted as a business progressive, expanding internationally, opening professional careers to young women, and implementing welfare capitalist m...

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