The primary aim of this article is to provide an overview of perfluoroalkyl and polyfluoroalkyl substances (PFASs) detected in the environment, wildlife, and humans, and recommend clear, specific, and descriptive terminology, names, and acronyms for PFASs. The overarching objective is to unify and harmonize communication on PFASs by offering terminology for… (More)
—We describe a comprehensive framework for text understanding , based on the representation of context. It is designed to serve as a representation of semantics for the full range of in-terpretive and inferential needs of general natural language processing. Its most distinctive feature is its uniform representation of the various simple and independent… (More)
Natural language understanding involves the simultaneous consideration of a large number of different sources of information. Traditional methods employed in language analysis have focused on developing powerful formalisms to represent syntactic or semantic structures along with rules for transforming language into these formalisms. However, they make use… (More)
Vertebrate genomes are mosaics of isochores, defined as long (>100 kb) regions with relatively homogeneous within-region base composition. Birds and mammals have more GC-rich isochores than amphibians and fish, and the GC-rich isochores of birds and mammals have been suggested to be an adaptation to homeothermy. If this hypothesis is correct, all… (More)
M.Ly computer applications require the manipulation of large data arrays. These applÍcations can behave badly under a paged virtual memory (vM) system, due to poor memory access _p¿tterns. One solution to this problem is tiling, a technique in which the arays are partitioned into sub-arrays that map one-to-one with VM-pages. Software implementations of… (More)
and all current and former forecasters and staff at the National Hurricane Center for your hard work and selfl ess devotion to saving lives.