The phrase "assumed fixed" is correct and usable in written English.
It can be used in contexts where something is taken to be constant or unchanging for the purposes of analysis or discussion.
Example: "In our calculations, we considered the temperature to be assumed fixed at 25 degrees Celsius."
Alternatives: "considered constant" or "regarded as stable".
In fact the smallest AIC (510.0) came from the analysis that applied our imputed values to a model that assumed fixed mine-specific intercepts and a fixed common slope.
These variations are assumed fixed throughout the longitudinal direction.
The resulting predictions are compared to standard approaches where the location is assumed fixed and known.
The first step is to investigate the prestress design only for the cable net structure as the circumferential nodes connected to the supporting truss are assumed fixed.
We show, however, that this sequential method does not yield acceptable results for the dynamic behavior due to the fact that the geometry is assumed fixed when optimizing the dynamics.
This is a substantial delay, albeit it is smaller than that predicted by the CTM, which assumed fixed dynamics in the future, and which predicts more severe springtime polar ozone loss (that is, for a given amount of chlorine from CH2Cl2, the ozone impact is smaller in the CCM).
The usual method of manpower planning thus started from a target rate of expansion in output and tried to estimate the numbers of various types of skilled personnel that would be required to sustain this target rate of economic growth on the basis of an assumed fixed relationship between inputs of skill and national output.
The fourth is that transport demand is assumed fixed.
The weighting, spatial correlation, and wall roughness are assumed fixed.
The roles of all nodes are assumed fixed in the network.
In (4), we have assumed fixed power spent at devices per time slot.
