The phrase "a combination of improved" is correct and usable in written English.
It can be used when discussing the merging or blending of various elements that have been enhanced or made better.
Example: "The project was successful due to a combination of improved strategies and teamwork."
Alternatives: "a blend of enhanced" or "a mix of upgraded".
The aim was to test the impact of a combination of improved information provision to patients and drug labeling on adherence to recommended anti-malarial treatment regimens focusing on oral chloroquine, for the outpatient management of acute uncomplicated malaria.
These gains have come about through a combination of improved well and hydraulic fracturing design, and a greater concentration of drilling activity in higher quality acreage, the so called "sweets spots".
Some OEF/OIF Veteran casualties survive due to a combination of improved body armor and advancements in battlefield care and are seeking disability benefits for these severe and complex physical wounds.
There was a significant fall in the 30-day mortality of patients admitted to the AAU from 6.3%to4.8%8% (relative reduction of 24%; see figure 3), suggesting the reduction in cardiac arrests was achieved through a combination of improved palliative care and improved rescue of the deteriorating patient.
A strategy using a combination of improved anode design and an enrichment process was formulated to improve power densities.
A combination of improved maintenance and relatively mild weather also reduced equipment breakdowns.
Their return is attributed to a combination of improving security, especially in Baghdad, Iraqi official encouragement, and the unwillingness of Syria to continue to pick up the tab for an exodus which has put a huge strain on its resources.
The growth was driven by a combination of improving market conditions, investors' increased risk appetite, and the firm's acquisition of Barclays Global Investors, or B.G.I., a leader in exchange-traded funds.
Citi raised its price target from 180p to 200p, as analyst Ben Spruntulis said: A combination of improving UK electrical data and resilient French consumer trends underpinned by tight cost control drives a 14% upgrade in our April 2010 pretax profit forecast to £80m.
Whirlpool coasted past Wall Street's profit expectations Monday, thanks to a combination of improving consumer attitudes and effective cost-cutting measures.
"The key to the next leg of the story resides in a combination of improving housing trends and signs of payoff from investments in the core business," Fassler said.
