Sensors are devices that detect and quantify physical aspects of the world around us. The measurement can either be read directly or converted to a signal for processing by electrical, hydraulic or ...
Optical sensors are a broad class of device for detecting light intensity. This can be just a simple component for notifying when ambient light levels rise above or fall below a prescribed level, or a ...
Objective Self-reports of physical activity (PA) have been the mainstay of measurement in most non-communicable disease (NCD) surveillance systems. To these, other measures are added to summate to a ...
Correspondence to Dr Richard P Troiano, Risk Factor Monitoring and Methods Branch, Applied Research Program, National Cancer Institute, NCI Shady Grove, 9609 Medical Center Dr, MSC 9762, Bethesda, MD ...
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