| The basic results were found to be invariant across different functional forms, including linear, log-log, and log-linear specifications. |
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| An approximately linear relationship was observed on a log-log scale. |
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| A plot of the number of points as a function of elevation will exhibit the usual straight line plot on log-log axes. |
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| Hence, log-log coefficient of friction, thru-rod tension, thru-rod hole size, and connection type are important. |
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| Ordinal regression, using the Polytomous Universal Model, with a link Negative Log-Log, was utilized to analyze the data and test the hypotheses. |
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