Ruy Barbosa Nogueira (1974-1978)

Barbosa A conversation with Frederico Simões Barbosa

- Luciano Barbosa

For the past ten years, I have worked on several problems related to finding and organizing Web data. From 1999 to 2002, I was a lead developer for Radix, one of the first Brazilian search engines. During my Masters, I designed and implemented a Web crawling policy that uses classification techniques to efficiently update a search engine index while maximizing its freshness [11]. After finishin...

Genetic study of congenital heart defects in Northern Ireland (1974-1978).

Congenital heart defects are a major congenital abnormality and are assuming increasing importance. A study was undertaken to estimate the incidence of congenital heart defects in Northern Ireland over a five year period (1974-1978), to determine the age at diagnosis and to assess the risk of recurrence in sibs. An incidence rate of 7.3 per 1000 total births was found. This reduced to 3.1 per 1...

Trends in Tennessee Medicaid Acute Care: Use and Expenditures, 1974-1978

Because person-level data are not currently available at the Federal level, many questions regarding the use and expenditures of Medicaid services remain unanswered. This article demonstrates the capability of State Medicaid Management Information Systems (MMIS) to provide data that can address a variety of Medicaid program issues at both the State and Federal levels. Using data from the Tennes...

Barbosa, Uniform Polynomial Time Bounds, and Promises

This note is a commentary on, and critique of, André Luiz Barbosa’s paper entitled “P != NP Proof.” Despite its provocative title, what the paper is seeking to do is not to prove P 6= NP in the standard sense in which that notation is used in the literature. Rather, Barbosa is (and is aware that he is) arguing that a different meaning should be associated with the notation P 6= NP, and he claim...