This was achieved through multi-variable experimentation for which the previous research is limited and has difference of opinion.
Instrumental variable techniques, policy experimentation, and reliance on "natural experiments" are currently very popular, though also problematic and controversial (Deaton 2010).
Table 6 The values of unaffected well-testing variables during the experimentation phase (The numbers in parentheses, where provided, are the corresponding values in SI units) Variable K S d C D ω λ Reservoir outer boundary Value 500 (4.95E−13) 0 2000 0.1 1 × 10−5 No flow Field units (SI units) md (m2) Dimensionless –.
In Section 3, the current understanding of chain extenders, chain extension experimentation variables and equipment is reviewed.
The problem of inflation has led to experimentation with variable annuities in order to protect annuitants against decreases in purchasing power.
Open image in new window Fig. 2 Schematic layout of pin-on-disc wear testing apparatus Table 2 Variable parameters selected for experimentation Variable parameters Level 1 Level 2 Level 3 Wear track dia (D), (mm) 50709090 Normal load (L), (N) 40 60 80 RPM of counter disc (N) 200 400 600.
The degree of stress under which cultured cells are when used for experimentation is variable, which might explain the discrepancies encountered among the different studies.
Since there are no variables to be modified, experimentation is not possible with this tool.
The controllable variables chosen for the experimentation were peak current, pulse on-time and electrode rotation speed.
Evolutionary operations is a method to exploit the association of often small changes in process variables, planned during systematic experimentation and occurring during the normal production flow, to production characteristics to find a way to alter the production process to be more efficient.
