These unknowns are determined by a genetic algorithm that minimizes a function accounting for: (1) drilling, operational and maintenance costs, (2) target discharge and minimum drawdown (i.e., minimum aquifer vulnerability) and (3) technical feasibility of the solution.
They are admonished to track an index or to hew to a "style," and woe betide the stock picker who suffers a "drawdown" (i.e., loss), is found guilty of "style drift" (i.e., opportunism) or who is so headstrong as to buy more when the market goes against him.
Ron Paul on Afghanistan drawdown: "I don't want to hear that he's going to bring 5,000 troops home or 10,000 troops.
dd_{i,j,k,t} le dd_{i,j,k,t}^{u} (2.3 where ( dd_{i,j,k,t}^{u} ) is the specified upper bound on drawdown at locations i, j, k at the end of stress period t.
In terms of implementation, the planner said, "the drawdown plans that I'm familiar with are condition-based, event-driven, and not in a specific time frame" — that is, they depend on the ability of a new Iraqi government to defeat the insurgency.
How quickly can I drawdown more borrowings through my credit cards and so on.
In addition, FDM results also show that the drawdown-time curve can be divided into four stages: in Stage I, drawdown inside the pit is very small and outside the pit it is almost zero; in Stage II, drawdown increases quickly with time; in Stage III, the drawdown curve is parallel to the Cooper Jacob curve on semi-log axes; and in Stage IV, the drawdown becomes constant.
"Between now and May, I could accelerate the drawdown," he said.
Solutions for drawdown were developed for the three domains, i.e. the strip-aquifer and the two shallow compartments, and flow signatures are discussed in detail and compared to numerical modelling.
The axi-symmetrical well flow simulation software WT (i) applies either analytical or numerical drawdown simulators in the formation, (ii) assumes uniform well bore drawdown conditions in the pumping wells, and (iii) considers drawdown driven induced flow in the observation well.
"I told the council I was concerned about the continuing drawdown of NATO forces and that we needed more troops," General Clark said, adding that nations had withdrawn troops from Kosovo because it was "expensive and difficult" to keep them there.
