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<br />I <br />~ <br /> <br />e <br /> <br />e <br /> <br />003G2~ <br /> <br />. dynamic monitoring of a system's state and updating of relevant <br />information. <br /> <br />The CRDSS is meant to introduce these benefits into the context of managing <br />the Colorado River water resources as to maximize the benefits for the state of <br />Colorado and its water users. <br /> <br />Methodology <br /> <br />Tasks I through 9 were conducted using a problem-centered design approach. <br />This methodology employs extensive scenario development and cognitive <br />walk-through procedures for the conceptual design of computer based <br />modeling and information systems, The methodology is based on an iterative <br />process conducted by system developers and potential users which converges <br />rapidly toward a detailed, well documented conceptual design (or designs) of a <br />system. <br /> <br />The methodology begins with a series of "brainstorming" sessions involving <br />potential sysIem users, The purpose of these sessions is to identify and "walk- <br />through" typical problems that users encounter in their daily work and practice, <br /> <br />After the initial list of problems is compiled. problem descriptions are <br />reviewed by the sponsoring organization to ensure that the problem <br />descriptions are representative and correct. Problem descriptions are then <br />refined by walking-through them until they are considered sufficiently accurate <br />to serve as system design guidelines. <br /> <br />From the problem descriptions, a definition of system needs is created (Task I). <br />This set of needs is then used throughout the remainder of the design and <br />development process as the touchstone against which all of a system's <br />components (functions. user interfaces. models, data. etc.) can be evaluated, <br /> <br />Problem Centered <br />Design <br /> <br />DAMES&MOORE/CADSWES-ll <br />