Weighted least squares (WLS) were preferred over ordinary least squares (OLS) to address the heteroskedasticity as, quite often, the error variance is functionally related to the independent variables in regression [83], that is, the variability of the biomass increases with tree independent variables [84].
Weighted least squares (WLS) were preferred over ordinary least squares (OLS) to address the heteroskedasticity as, quite often, the error variance is functionally related to the independent variables in regression [ 83], that is, the variability of the biomass increases with tree independent variables [ 84].
Especially significant is the variability of the N VII Lyα resonance line (see Table 3).
What is underestimated in this context is the variability of the raw material.
A second difference between clusters and bulk matter is the variability of the properties of clusters with the number of their constituent particles.
In this paper, we assume that the only source of uncertainty is the variability of the applied load directions.
One possible reason that standard correction procedures have not produced consistent results is the variability of fuel evaporation; another is mixture distribution, or delivering the same proportions of fuel and air to each cylinder from the single four-barrel carburetor.
A significant source of uncertainty in biodiesel production is the variability of feed composition since the percentage and type of triglycerides varies considerably across different raw materials.
"Biodiversity is the variability of all living organisms," the center said, "of the genes of all these organisms and of the terrestrial, aquatic and marine ecosystems of which they are part".
For geotechnical engineering practices in a specific project, it is the variability of geotechnical properties within this specific site, not the variability from many different sites, that geotechnical engineers are interested in and require.
One of the limitations of photodynamic therapy is the variability of photosensitizer concentration observed in systemically photosensitized tissues, mainly due to differences of the tissue architecture, cell lines, and pharmacokinetics.
