'improvement occur' is not correct and usable in written English.
To make it correct, you should change 'occur' to 'occurs'. For example: We can expect improvement occurs when we focus on our goals.
Changes in the cortical network related to response selection as well as performance improvement occur at a later state of practice.
Spinner et al. [ 34] recommended exploration if no signs of clinical and electromyographical improvement occur within 6 8 weeks.
We also demonstrated that the morphological changes contributing to this remarkable improvement occur as a consequence of lignin removal from the sample.
It considers how within-case conditions (e.g. in this study perceptions of service improvement) occur in relation to a particular outcome of interest (e.g. in this study whether the respondent could see a state health office contribution to service improvement).
Although clinicians in both states improved on several survey responses, greater overall improvement occurred in Wisconsin.
With reduction, a substantial improvement occurs.
"Long-term economic improvement occurs when societies invest adequately in their future," Sachs writes.
Revised strategies, policies, and possibly new organisational arrangements may be necessary, but it is relationships which determine whether improvement occurs.
Most of the South's improvement occurred after 1960, around the time the civil rights movement ended official segregation.
This improvement occurred mostly for military reasons, although it also benefited agriculture by facilitating the supply and servicing of markets.
