Using an eye-tracking methodology, along with gaze pattern and fixation analysis Schneider et al. [ 28] found that children in the first years of school do spontaneously use orientation points (external markers) to support spatial-numerical processes such as numerical estimation.
To achieve reliable soil moisture estimation, these issues must be taken into account through processes such as modelling and compensation.
Computational simulation, combined with a pilot mutagenesis experiment, could serve as a tool for the estimation of the number of genes essential for biological processes such as drug target pathways when a positive selection of mutants is available.
Species tree estimation is challenged by gene tree heterogeneity resulting from biological processes such as duplication and loss, hybridization, incomplete lineage sorting (ILS), and horizontal gene transfer (HGT).
This quartet-based distance measurement assesses the "tree-likeness" of distance data before phylogeny estimation and allows the identification of non-tree-like data arising from processes such as lateral gene transfer (Holland et al. 2002).
On the one hand, detected surface changes reveal that the estimation of soil erosion is not possible using HiRT methods alone due to processes such as compaction, consolidation, swelling and shrinkage.
In addition, philopatric behavior, local larval retention mechanism, and historical processes such as e.g. the effect of Pleistocene sea level changes also complicate estimation of genetic differentiation for many marine pelagic fishes [ 2, 10, 11].
Reliable estimation of these can be complicated at high latitudes, especially during active geomagnetic conditions, when the composition and dynamics of the upper atmosphere are perturbed by processes such as Joule heating and auroral precipitation.
Oftentimes, specific physiological processes, such as rate of glycolysis or hepatic glucose uptake, are difficult to directly assess in humans due to the invasive nature of the estimation methods.
However, the specific characteristics of these processes, such as complexity, nonlinearity, and absence of cheap and reliable instrumentation, require an enhanced modelling effort and advanced kinetic parameter estimation strategies.
