The problem of estimating the parameters of a forced discrete
linear dynamic model is considered. The system model is conceptualized
to include the value of the initial state as a parameter. The forces
driving the system are partitioned into accessible and inaccessible
inputs. Accessible inputs are those that are measured;...
The Direct/Delayed Response Project (DDRP) has been designed and implemented to estimate the number of lakes and streams that might become acidic in three regions due to current or altered levels of acidic deposition. As part of DDRP, 145 watersheds in the northeast US were mapped at 1:24,000 for soils,...