Factors influencing variability

Influence diagrams can be used with the strategy tables to identify factors or variables that create uncertainty in assessing the value of various options. Issues can be quaUtatively prioritized in selecting the best path to generate value for the business. 

Cloughley, J. B., Factors influencing the caffeine content of black tea Part 1 — The effect of field variables. Food Chem., 9 69, 1982. 

In addition to biological and environmental factors that influence the onset and course of drug-related problems, there also are many individual risk factors. These variables can include those related to a person s actions or behavior, those related to the way a person thinks, or those related to the experience of emotions. The next few sections will discuss in detail these personal variables that can be related to drug problems in some people. 

A slightly different type of masquerade takes place when a single, unknown factor influences two outputs, and one of the outputs is mistaken as a factor. G. E. P. Box has given such masquerading factors the more dramatic names of either latent variables or lurking variables [Box, Hunter, and Hunter (1978), and Joiner (1981)]. 

Susceptibility of vegetation to air pollutant injury is reportedly influenced by many climatic factors, edaphic factors, genetic variability, and by structural and biochemical variations in the plant. Observed differences in susceptibility have prompted numerous attempts to prepare lists of plant species according to susceptibility or tolerance to specific air pollutants. It has become apparent that such lists are frequently inaccurate because the differential in susceptibility within a single variety or cultivar may be as great as that between species. 

The unified approach adopted by Ma ek assumed that all initiations are ultimately thermal. More precisely every initiating stimulus (shock, impact, electric discharge, friction, etc) serves to heat up the explosive or a portion thereof, initially at a temperature T to an elevated temperature T. It is assumed that T and the length of time t the explosive is exposed to T are the two variables sufficient to account for initiation. The 3rd factor influencing the reaction rate, density p, is important in gaseous combustions and explosions where it varies considerably with temperature and pressure in homogeneous solids and liquids it is nearly constant... 

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