Visual acuity will be measured using a directional Table E or Snellen (Snellen-E chart), which is a standardised measure of vision, conducted at a distance of five metres.
Ankle-brachial index (ABI), blood pressure at the ankle level divided by the blood pressure in the right forearm) was measured using a non-directional pen doppler and a standard blood pressure cuff.
The directional tuning curves were measured using drifting gratings at 22.5° steps.
Velocity and directional velocity toward the spermatheca were measured using ImageJ.
The directional surface temperatures over urban areas are measured using an airborne TIR camera equipped with wide-angle lenses.
In this work the rate of directional freezing that occurs during vacuum-induced surface freezing of alumina dispersions in glass vials was measured using a video camera technique.
Figure 8 An illustration of anonymous routing using directional antennas.
This is another reason for using directional antennas.
Standing on the spot prompts an ultrasonic speaker, dangling a few feet overhead, that uses directional sound technology.
