DIVERS ADAPT AS FATNESS VARIES

The timing of the rise in U.S. obesity varies with measure of fatness.

There are several ways to measure fatness and obesity, each with its own strengths and weaknesses. The primary measure for tracking the prevalence of obesity has historically been body mass index (BMI). This paper compares long-run trends in the prevalence of obesity when obesity is defined using skinfold thickness instead of BMI, using data from the full series of U.S. National Health Examinat...

Adapt OWL as a Modular Ontology Language

OWL, the most commonly used web ontology language, has limited provision for handling modular ontologies. Specifically, the owl:imports construct for linking ontology modules lacks support for partial reuse of or localized semantics for the linked ontology modules. We propose an alternative to owl:imports, namely, semantic importing, for linking multiple modular ontologies with support for loca...

Documents divers statistiques

Expiratory flow limitation in compressed air divers and oxygen divers.

Divers are exposed to dense gases under hyperbaric and hyperoxic conditions and, therefore, may be at risk of developing respiratory disease. Long-term effects on respiratory function have been found in commercial divers who perform deep dives. This study was conducted to detect possible lung function changes in scuba divers who dive in shallow water using compressed air or oxygen as a breathin...

Exercising divers' thermal protection as a function of water temperature.

Physiological adjustments and passive thermal insulation are not sufficient to protect divers in the cold and warm waters experienced by sport, professional and military divers. In a previous study of resting subjects, divers were protected by actively heated/cooled water that perfused a six-zone (head, torso, arms, hands, legs and feet) tube suit. Subsequently a self-contained diver thermal pr...