To deal with this issue, we adjusted the local PM-source regressions for the average neighborhood PM concentration at the same time; average neighborhood concentration was estimated as the average of those at all fixed-monitoring sites (which, by being fixed, vary only in time).
Whether alpha is fixed or varies across a tiny span, the overriding question is whether its value was inevitable -- determined somehow by an inviolable law -- or just a matter of happenstance.
This property is essential for emotional speech since the duration of a turn is not fixed and varies depending on the speaker's activity.
Cementation factor is fixed but varies with formation lithostratigraphy, permeability dependent factors and geologic age of geomaterials (Archie 1942; Keller 1982) according to different tabulated values.
In particular, we consider the possibility that labor supply is correlated with some characteristic x (not observable to the econometrician) that is fixed but varies across individuals, and is a relevant attribute at the time of the match.
The location of an external stimulus in space is not fixed, but varies in time as the subject and the external objects move relative to each other.
However, cell cycle times for T cells responded in vivo have not been extensively analyzed [25], [26], and it is not known whether the division time in vivo of antigen specific T cells is uniformly fixed or varies with antigenic stimulus and the duration of cell proliferation.
HRV analysis is based on the well-known fact that the heart rate is not fixed, but varies from beat to beat constantly.
The method is based on the well-known fact that the heart rate is not fixed, but varies from beat to beat constantly.
In the absence of ubiquitin, the relative orientation of the small and large subdomains is not fixed and varies for different structures (Huang et al, 1999; Verdecia et al, 2003; Ogunjimi et al, 2005).
