Adaptive Interval Changes

The single reference to Thompson s survey [547] must suffice to represent the numerical literature, and the references in the papers of Bieniasz [93,95,97, 101] provide further background. 

The procedure is then as follows. At a given time, a trial step is taken to the next time level. This produces a provisional new concentration profile. From this, the -function (7.25) is generated and from it, a new set of positions for the points. Now the concentrations are interpolated at these points, between the present concentration points, and the step to the next time level repeated on the new set of points. 

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Prior to the degradation of many organic compounds, a period is noted in which no destruction of the compound is evident. This time interval is designated as an acclimation period or, sometimes, an adaptation or lag period [93-98]. It may be defined as the length of time between the addition or entry of the compound into an environment and evidence of its detectable loss. During this interval, no change in concentration is noted, but then the disappearance becomes evident and the rate of destruction often becomes rapid. 

Changes in the atmospheric fields happen on different time scales and with different speed. Therefore, we adapt the time intervals for writing the model results (that are the forcing data for nested simulations) to the time scales, in which the atmospheric fields change, instead of using short but constant time intervals. If significant changes happen on short time scales, the results should be written more often than for more or less steady conditions. 

Plan for regular follow-up. The pharmacist should plan to interact with the patient at regular, usually brief intervals to reinforce the adherence plan. For example, brief appointments can be scheduled when patients visit the pharmacy for prescription refills. The plan should be adapted to the patient s lifestyle and be reevaluated from time to time to adjust for life changes, such as aging or a change in work or school schedules. If possible, the time for counseling on adherence should be separated from the dispensing and pick-up functions. 

Given that producers and consumers have already adapted so as to minimize their prospective losses, or to maximize their prospective gains. Figure 2 depicts for a predetermined time interval one example of the changes an air pollution increase can have upon consumer surplus and producer quasi-rent. The air pollution increase reduces the desirable properties of the output, making smaller the consumer s w llingijiess-to-pay and causing his demand... 

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