The phrase "and difficulty of planning" is correct and usable in written English.
It can be used when discussing challenges or obstacles related to the process of planning something.
Example: "The project faced several setbacks, including budget constraints and difficulty of planning."
Alternatives: "and challenges in planning" or "and issues with planning".
The difficulty of planning for drought conditions and hence of preventing famine has been increased by the great successes of science and technology in the last quarter century in the control of parasitic and nutritional disease.
This algorithm can not only greatly expand the gait patterns of turning, but also reduce the difficulty of planning.
"It has been a bit of a challenge because the locations and the directions that people are expected to flee to have kept changing," said Alun McDonald, spokesman for Save the Children in Iraq, referring to the difficulty of planning for such large-scale movement.
This is due, in part, to the difficulty of planning similar in vivo experiments, considering the fast bacterial doubling time in vivo, different biodistribution, affinity and specific activity of radiopharmaceuticals. Overall, we lack basic studies to clearly prove the mechanism of action and binding of these radiopharmaceuticals to bacteria.
The ambition and difficulty of the plan was unprecedented: it required cutting a trail from Seward, on Alaska's Pacific coast, 470 miles north to the rough-and-ready gold rush town of Fairbanks, stopping in what soon would become the city of Anchorage on the way.
Several major variables compound the difficulties of planning the best treatment regime and of designing clinical trials for testing chronic wound therapeutics.
The lack of spontaneous use of the paretic hand is primarily caused by difficulties of planning the hand trajectory in space, as reflected by temporal and spatial parameters during task performance.
