Five batteries were designed for which the number of windings around the cell core was increased for each succeeding battery to study the effect of this variable upon the dimensions, weight, and performance of the batteries.
Therefore, the effect of this variable is ambiguous.
The effect of this variable is almost double for the US case compared with Spain.
Further research is necessary to determine the effect of this variable over time with confidence.
This indicates that the effect of this variable on dependent variable (Density) is higher than other variables.
Richardson and Welker (2001), for example, fail to identify the hypothesized cost of capital effect of this variable.
Due to this relatively ambiguous situation, we expect that the effect of this variable on the adoption of organic cotton can be positive or negative.
When modelled in combination with GDP per capita, the effect of this variable keeps its significance, but the main effect of GDP per capita becomes not significant.
If the effect of this variable is statistically very close to zero, the two sets of estimates lead to likelihood values that are approximately the same, and identification is dubious3.
The marginal effect of this variable suggests that one additional year spent on formal education, increased the probability of reacting positively to the willingness to pay for myrtle forest conservation by 0.012.
In line with the migration literature, potential migrants are attracted by countries where the unemployment rate is relatively lower, although the effect of this variable becomes statistically insignificant with the inclusion of additional explanatory variables.
