In case of control effectors failures, aircraft model will vary, and unknown disturbances will affect the characteristics of controller.
Conclusion: A discrepancy between MR imaging and surgical observations of fluid in simple bone cyst cavities was observed that might be dependent on the time between the observations, indicating that a fairly rapid absorption of fluid might occur or that the amount of fluid in a simple bone cyst can vary for unknown reasons. ORAL Surg Oral Med Oral Pathol Oral Radiol Endod 2001;92 694-8).
To study the different approaches in heterogeneous, yet realistic settings, we varied number of unknown functions in the range 10, 15, 16, 17, 18 and 20 species (the original data contained 16 unknown functions).
The apparent association between histological grade not done or unknown and increased incidence of IBTR is unexplained but may be related to different pathology practices at the treating centres and unknown case-mix variables, as the percentage of times that a histological grade was not done or was unknown varied from 8.04% to 33.62% across the eight hospitals.
The total number of mosquitoes collected in the traps varied considerably for unknown reasons.
The number of data sets reporting at least one patient to one of the nine defined categories varied between 15 (unknown) and 69 (died) (table 2).
These results were made available to the PI's research laboratory, which determined whether the samples varied from the unknown cassava samples.
Nevertheless, the exact protocols used by parents are obviously varied and really unknown in the present study because no measurement instructions were given.
For most digital communication systems, the characters of signal channel are usually unknown and varied along with time.
The number of tail vertebrae is unknown and varied with individual size; James Madsen estimated about 50, while Gregory S. Paul considered that to be too many and suggested 45 or less.
The reasons why the stability varied between samples are unknown.
