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Keys, Nominate, and Concrete Domains

Many description logics (DLs) combine knowledge representation on an abstract, logical level with an interface to "concrete" domains such as numbers and strings. We propose to extend such DLs with key constraints that allow the expression of statements like "US citizens are uniquely identified by their social security number". Based on this idea, we introduce a number of natural description log...

Appreciating a Hiley Respected Colleague

One cannot sensibly introduce Basil Hiley’s work as a mathematical physicist without his collaboration with David Bohm, lasting from 1962, when Basil went to Birkbeck College, to Bohm’s death in 1992. The beginning of their careers shows an astonishing similarity in the study of collective phenomena—Bohm in plasmas, Basil in molecules. However, their topics changed drastically over time, and th...

Is Bleomycin a worthy alternative?

Bleomycin is an antibiotic discovered in 1966 and used as anti-cancer drug. It has also been used as sclerosant for lymphatic malformation with good results and minimum side effect. Like any sclerosant agent, bleomycin is popular for the treatment of lymphatic malformation with publication as recent as in January 2011.[1] Unlike surgery, sclerotherapy is better specially for avoiding injury to ...

Bleomycin: A worthy alternative

CONTEXT Lymphangiomas are developmental anomalies presenting mainly in the first two years of life. Surgical excision has been the mainstay of treatment; however a potentially disfiguring surgery along with presence of important structures in the vicinity and infiltration into surrounding structures makes the dissection difficult. AIMS To study the safety and efficacy of Bleomycin as a sclero...