"a tight constraint" is correct and can be used in written English.
You can use this phrase to refer to a limitation which is strictly enforced and difficult to work around. For example: "The budget was a tight constraint on the project, leaving very little room for error."
Combined with contemporary observations of atmospheric CO2 concentration and tropical temperature, this relationship provides a tight constraint on the sensitivity of tropical land carbon to climate change.
Where overland infrastructure is lacking, the cost of just getting to the sea can be prohibitively high for many trade goods, placing a tight constraint on economic activity.
It also provides a tight constraint on the mean matter density.
(2) Star formation evolved predominantly gradually declining, not through an evoloving role of starbursts, placing a tight constraint on the role of major mergers in the evolution of star formation rates.
The convergence rate also affects the practical value of the method (e.g., a system with a tight constraint on decoding delay) and the number of iterations affects the performance.
During the quadtree downsampling process in this study, the deformation gradient threshold was set to 0.3 for the near-field region to obtain a higher density of sampling points to employ a tight constraint on the inversion computation.
However, the reduced time-step required to simulate complex and fast systems imposes a tighter constraint on the time within which the computations have to be performed.
Combining the model with theoretical estimates of the intensity of the specular reflection allows a tighter constraint on the waves: ⩽0.05°.
In all cases the computational effort is similar to that of the FMM run shown in Figure 7 (since a ≤ f criterion (16a) gives a tighter constraint than (16b) and hence requires larger ϵ for the same computational effort).
The mean SLO violation percentage of RAP is still high because a very tight constraint is enforced on the number of web server instances and database instance cores available per interval.
