Epidemiology is concerned with the incidence of disease in populations and does not address the question of the cause of an individual's disease.This question, sometimes referred to as specific causation, is beyond the domain of the science of epidemiology.he subdiscipline of forensic epidemiology is directed at the investigation of specific causation of disease or injury in individuals or groups of individuals in instances in which causation is disputed or is unclear, for presentation in legal settings.
Major system characteristics. Tacan stands for Tactical Air Navigation and is a system which, working in the u.h.f. band, between 962 and 1,214 Mc/s, gives to a pilot continuous information as to his range and bearing from a beacon.
The enemy won't have TACAN receivers, but they will have VOR receivers. And lots of others. The military see a bigger picture than just compatibility of kit. TACAN does not have a greater range-it's line of sight, just like VOR. I don't know of any civilian aircraft with TACAN fitted. I would be surprised if there were any, other than those on military contracts, but I may be wrong.