Thus, we estimate alternative specifications of Eq. (1) with and without different categories of covariates included in the model.
In this study, we use a twelve-year panel of 69 Italian public transit providers (with or without ITS) and estimate alternative specifications of the demand function.
We tested the proportional hazard assumption by estimating alternative specifications that admitted interactions between analysis time and variables of interest.
98 RNA-seq technology allows us to estimate alternative splicing events on genome-wide scales and in an unbiased manner.
The robustness checks carried out using the complete set of estimates, alternative estimators and extreme-bounds analysis confirm this result.
Therefore, we estimated three alternative specifications of the presented model controlling for these issues.
It is estimated that alternative splicing occurs in 70 80% of human genes, but is more common in regulatory genes, and tissues with diverse cell types [10].
It is estimated that alternative splicing affects 94% of multi-exon human genes (49, 50).
One researcher (IS) also estimated an alternative estimate of average cigarette consumption (among smokers) based on unweighted data from the UK Opinions and Lifestyle Survey 2012 (Office for National Statistics 2012).
Posterior probabilities are estimated for alternative models with differing environmental variables and the model with the highest posterior probability best explains the data.
