"sufficient contribution" is correct and usable in written English.
You can use it when you are talking about a contribution that either meets or exceeds the expected amount. For example: "The generous donation of $1,000 was a sufficient contribution to cover the event's costs."
Having established that the obligation from fairness to support research cannot necessarily be discharged merely by the making of some contribution (in this case the payment of a certain sum of taxes) but that there is also a criterion of sufficiency, we must now consider the question of what would constitute a sufficient contribution.
"That's where I decided that fighting over the dinner table wasn't really a sufficient contribution," he said.
This paper discusses the robust methodology for AGC of conventional system with sufficient contribution from doubly fed induction generator (DFIG) in control areas.
As the climate became ameliorated during the early Holocene, there was an increasing biomass and a sufficient contribution do to high fuel accumulation from C4 taxon (Gramineae).
"We are four years and seven months down the line and only now have they acknowledged their breach of the Health and Safety at Work Act and that this breach made a sufficient contribution to mum's fatal accident.
On the macroscopic level, post-therapeutic 90Y bremsstrahlung imaging has the poorest resolution and contrast recovery [22,33-35], followed by pre-therapeutic 99mTc-macro-aggregated albumin (99mTc-MAA) SPECT [23-25 [23-25ET imaging, which is possible due to the small, but sufficient, contribution of internal pair production for positron emission [5,26,27,36-42].
We identify direct, specific, and sufficient contributions that in vivo observations validate.
After that, the unemployed go onto a non-contributory system called Hartz IV. Germany has objected to paying those benefits to EU migrants who have not made sufficient contributions through work.
The size of the panel was determined by the evidence that whilst having more group members increases the reliability of group judgement, large groups reduce the ability to elicit sufficient contributions from every member of the panel [ 17].
Once these two variables had been entered into the model, none of the remaining independent variables made sufficient additional contribution to the model to meet the entry criterion.
Rising ticket prices, declining attendance, lack of sufficient philanthropic contributions and an aging and dying patron base all contribute to the Opera, and for that matter, many performing arts organizations.
