Sentence examples for be directly observed because from inspiring English sources
The problem with externalities is that their value cannot be directly observed, because they are not individually traded in the market.
(Note that, in both physical and economic systems, endogenously stable states might never be directly observed because the systems in question are never isolated from exogenous influences that move and destabilize them. In both classical mechanics and in economics, equilibrium concepts are tools for analysis, not predictions of what we expect to observe).
The sampling approach, advanced as it was at the time, could only partially validate the Fe(II) solubility phenomena, because the Fe(II) maxima could not be directly observed because the measurements were not obtained in situ.
Next, diploid genotype data were formally phased based on the fact that phase could be directly observed, because markers not originally missing or set to missing were phased de facto by virtue of the genotypes being homozygous.
However, neither parameter is directly observed because of the absence of a no-treatment group, thus requiring the use of external evidence or subjective judgment.
In the present study, REE-bearing mineral(s) suspended in the groundwater cannot be directly observed by SEM observation because of the very low concentration of colloids in groundwater.
First, the number of unisolated MRSA patient days usually cannot be directly observed using surveillance data, because in most settings those who are known to be MRSA-positive are immediately isolated.
Differential equations are very common in science and engineering, as well as in many other fields of quantitative study, because what can be directly observed and measured for systems undergoing changes are their rates of change.
Because nothing can be directly observed below this thin outer layer, indirect conclusions are drawn from the evidence in order to determine the composition of the interior of Jupiter.
Prospective community cohort studies are commonly regarded as the "gold-standard" measure for community-level incidence because incidence can be directly observed in the sample.
A major challenge in this technique is to ensure that measurements reflect bonds between single biomolecules because the molecules cannot be directly observed.
