The sky hemisphere is discretized in 46 solid angle sectors of equal area according to the Turtle sky proposed by Den Dulk (1989).
Similar posture metrics based on time spent in specific angle sectors have also been presented for other body regions, including the neck [ 9, 14, 23, 80- 82], trunk [ 9, 23, 27, 43, 51, 80, 82] and wrist [ 9, 82].
A few studies have documented the statistical performance of arm posture metrics based both on angle sectors and percentiles in the same population [ 12, 23], suggesting posture variabilities between and within subjects to be of similar sizes for comparable variables.
Diffuse radiations were approximated by a set of light sources on a sky vault discretized in 20 solid angle sectors using the spherical coordinates, including 5 zenith angles (18°, 36°, 54°, 72°, 90°) and 4 azimuths.
Alternatives to variables based on percentiles may be preferable, such as the proportion of time spent in pre-defined angle sectors [ 9, 12, 23, 27, 79, 80]; informed decisions based on the statistical properties of such alternatives are paramount [ 6, 12, 50, 51, 78].
Each subject's sensitivity to luminance was measured by flicker photometry at 13 retinal positions covered by the hue-changing stimulus, including a central foveal region, 4 locations in eccentricities between 0.6° and 1.8°, and 8 between 1.8° and 3.0° in visual angle (sectors shown by dotted lines in Fig. 1 B).
A comparison was made between a linear array and a mechanical multiple angle sector (MAP) transducer for ultrasound-guided transvaginal oocyte retrieval (ovum pick-up, OPU) in the cow.
Therefore, the mainlobe angle sector Φ can be defined as varPhi =left(begin{array}{cc}hfill {theta}_0-raisebox{1ex}{${operatorname{BW} }_0$} left/!raisebox{-1ex}{$2$}right.,hfill & hfill {theta}_0+raisebox{1ex}{${operatorname{BW} }_0$} left/!raisebox{-1ex}{$2$}right.hfill end{array}right) (10).
An accurate spatial spectrum can be obtained from the results of IAA, and the SOI DOA ( {widehat{theta}}_0 ) is also determined by searching for the peak of IAA spatial spectrum in the possible angle sector.
For the large scattering angle (sector B), the level of the signals is lower and does not allow to attribute it to the certain kind of bromine contained in the BrACF.
Sure enough, on inputting the values in the above equation, we receive alpha _{j,max } le alpha _G (21 Since α G is the first angle sector, the relation simplifies to (alpha _{j,max }) being equated to α G, the goal angle.
