The phrase "constrained directly" is correct and usable in written English.
It can be used in contexts where you want to describe something that is limited or restricted in a straightforward manner.
Example: "The project timeline is constrained directly by the available resources."
Alternatives: "restricted directly" or "limited directly."
Existing object tracking algorithms are mostly centralized and based on heavy and complex signal processing algorithms, hence they cannot be applied to resource constrained WSNs directly.
Instead, they often use their influence to constrain firms directly by, for example, calling for a boycott, mounting a negative advertisement campaign, and so on.
For the shattering duration, since it is degenerate with the critical pressure of grains (hardness of grains), it is difficult to constrain it directly from the models.
As such, the insects are not directly constrained by the size of the laboratory environment.
Moreover, both connectance and diversity had indirect effects on disease spread via nestedness (connectance increased and diversity decreased), which directly constrained disease spread (Fig. 4c).
The effects of diversity and connectance were further channelled indirectly into reduction in resident community nestedness, which then directly constrained pathogen invasion success (Fig. 4a).
Furthermore, the robot is not constrained to converge directly upon each image of the path, but chooses its trajectory automatically.
The Campaign Finance Institute, in a report done jointly with the Brookings Institution and the American Enterprise Institute, also recommended that party organizations not be constrained in working directly with candidates but only when using money from donors who give $200 or less.
Whereas most Republicans believe benefits have to be directly constrained by, for example, converting Medicare to a voucher system, Mr Obama prefers to curb fees to drug companies and hospitals and experiment with different ways of delivering care.
