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This is the seventeenth annual review published in JAAS of the application of atomic spectroscopy to the chemical analysis of environmental samples. The review follows on directly from last year's (J. although this year it incorporates a number of changes in structure. The most obvious and perhaps the most important change is the removal of some of the… (More)
The relationship between number of prescriptions per office visit and the appropriateness of the prescribed drugs is examined, using data on more than 20,000 prescriptions purchased for a low-income rural population during 1973 and 1974. Criteria for drug appropriateness are based on an AMA evaluation of drugs. The results show that greater numbers of… (More)
The fast Fourier transform (FFT) is a challenging algorithm to implement efficiently on a parallel computer. Recent algorithm advances have led to greatly improved FFT performance on parallel vector computers such as the CRA Y-2 and CRAY Y-MP. Variations on these techniques can be used to extend this improved performance to other parallel architectures. A… (More)
—This paper provides an introduction to programming accelerators using the PGI OpenACC implementation in Fortran and C, which is based on OpenACC API version 1.0. The paper explains the use of the data construct, and compares the use of the Parallel and Kernels construct. PGI-specific extensions and features, and compiler and runtime options, are shown.
The ability of adenosine to stimulate adenylate cyclase [ATP pyrophosphate-lyase (cyclizing), EC 126.96.36.199] and increase adenosine 3':5'-cyclic monophosphate (cAMP) levels has important biochemical consequences. These include the suppression of immune responses and cardiovascular effects. Recent investigations involving the ability of adenosine and adenosine… (More)
In an effort to improve the health care in a rural county in Southern Appalachia, physicians' assistants (MEDEX) have been employed in the offices of three general practitioners over a three-year period. This program was evaluated using a before-after and experimental-control (county) design, utilizing data both from physician office contracts and a… (More)
A focus on health care delivery systems and the emergence of New Health Practitioners, particularly Physicians' Assistants (PAs), represents one of the more significant nonbiomedical developments in American medicine since World War II. Much discussion about PAs revolves around the kinds of illnesses they are qualified to treat which then permits physicians… (More)