In particular, we can estimate Q q for, say, q = 10%, 5%, and 1%, as well as for the median (q = 50%) for any desirable time interval τ.
For in-vivo imaging studies, it is desirable for the interval between frames to be on the order of 0.1 – 0.01 s, (frame rates of 10 – 100 frames per second) acquired over 10 – 60 s making storage of acquired images in RAM during acquisition not feasible.
The proposed methodology has a desirable feature that expensive interval analyses are not required.
However, we consider a large time interval not desirable for the assessment of measurement variation because of the biological variation within subjects over time [ 6, 23].
Depending on the trough plasma T level immediately before the next injection and clinical symptoms of the patient, adjustment of the injection interval is desirable, rarely by shortening (every 10 11-weeks 10 11-weeksten by proronging (every 13–14-weeks) the interval between two injections.
There is therefore a need for clear policy on repeat testing: if risk is ongoing, repeat testing at appropriate intervals is desirable; however, the resource implications need to be considered for unnecessary repetitive testing.
The scale of desirability emphasises a relationship between the affecting factor via factor fraction (X i ) and the desirability function by the intervals of the desirable degree.
As production rate increases from 4000 to 7000 STB/day, the length of tubing covered by asphaltene deposition enhances about 40%; however, a decrease in the production rate to reduce this interval is not desirable.
The map covered 1,328 cM with average spacing between markers of 5.8 cM, smaller than the 10 cM desirable for QTL detection by interval mapping (IM) [ 18- 20].
However, it might be desirable to extend this time interval for patients requiring longer time periods to properly perform impaired movements.
