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<br />002823 <br /> <br />e <br /> <br />e <br /> <br />had to be easily identified and easily understood. Simplicity and yet <br />completeness was needed. In order to ensure the development of a reaso- <br />nable set or array of alternative strategies, the first step was a com- <br />pilation of desirable features. The following features were used to <br />give substantial gui~ance for development of actual ,strategies to be <br />considered. <br /> <br />Broad coverage. - The array of strategies developed must be broad enough <br />to essentially encompass all other strategies which might be proposed to <br />meet various objectives. <br /> <br />Simplicity. - The basic philosophy must be the same for all strategies. <br />The philosophy must be easy to explain and understand. The differences <br />between individual strategies must be based on rational and gradual <br />changes in the controlling factor(s) of the basic philosophy. <br /> <br />Identification. - It is very desirable to identify the various strate- <br />gies by one single parameter. This identifying parameter must tie <br />directly to the controlling factor(s) of the basic philosophy and must <br />have a distinct, easily understood physical meaning. <br /> <br />Durability. - Strategies must be relatively immune to changes in basic <br />assumptions. The optimum strategy should be the same regardless of the <br />depletion schedule selected. Changes in depletions with time should not <br />cause the optimum strategy to change with time. <br /> <br />Distinct components. - The operating strategies should be composed of <br />distinct annual, seasonal;' and spatial components. This aids in <br />explaining strategies and simplifying comparisons. <br /> <br />2 <br />