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<br />12-6-91 <br /> <br />SCOPE OF SERVICES <br />Page 10 <br /> <br />. <br /> <br />will be accomplished through provlSlon of in-kind services of Sponsor.; Committee <br />member.;. Definition of desired model time step will also be accomplished in this subtask. <br /> <br />Subtask 1.3.d: Definition of Planning Process and Intended Uses of the <br />p\lInning Model <br /> <br />A primary objective for the Planning Model is that it be usable by a variety of <br />organizations and interest groups who may want to participate in the planning process. <br />In order to meet this objective, a careful analysis will be made of the planning process <br />itself. The goal of this analysis will be to identify the different roles or intended uses of <br />the model in the planning process and the particular capabilities which the Planning Model <br />will need to possess in order to support the full range of intended user.;. It is anticipated <br />that the model will need to provide capabilities for specifying a new scenario relative to <br />an existing scenario, for comparing their impacts and for documenting the assumptions <br />underlying each. It may be important for different users to be able to replicate each other's <br />scenarios and results easily in order to build confidence in the reliability and interpretation <br />of model results. And it may be desirable to provide various security measures so that <br />assumptions cannot be hidden. A related goal of this subtask will be to define the set of <br />intended users of the Planning Model in tenns of the levels of technical skill and knowledge <br />of basin hydrology which may be assumed. <br /> <br />. <br /> <br />Subtask 1.3.e: Definition of Desired User Interface Characteristics <br /> <br />Based upon the results of the preceding subtasks, Hydrosphere will work with the <br />Sponsor.; Committee to define the desired characteristics for the Planning Model's user <br />interface. This will include the logical sequences in which operations may be performed, <br />the modes in which data may be entered or modified, the means by which choices can be <br />indicated, the types of information to be generated by the model and the means of display <br />and output of results. Beginning at this stage of the project and continuing throughout the <br />tasks of specification, programming and testing, it will be important for Hydrosphere to be <br />able to work directly with a group which represents the intended hands-on user.; of the <br />Planning Model. User interface layouts and components should be tested by this group for <br />under.;tandability and to detect logical flaws in preliminary designs. The user.; group <br />should be designated by the Sponsor.; Committee. A tentative schedule will be developed <br />for their involvement over the duration of the project, but the principle of user testing is <br />that early and frequent user involvement in the design process is highly beneficial. <br /> <br />. <br />