A conceptual model in problem formulation is a written description and visual representation of predicted relationships between ecological entities and the stressors to which they may be exposed
A diagram of a set of relationships between factors that are believed to impact or lead to a target condition It is the foundation of project design, management and monitoring; and it is the first part of a complete project plan
The expert's view of the process being modeled Often conveyed as a schematic; for example, as interconnected compartments, each compartment having inflow, outflow, and reactions among compartment constituents
"a high level description of the proposed system in terms of a set of integrated ideas and concepts about what it should do, behave, and look like that will be understandable by the users in the manner intended " (Preece et al, 2002, p 40)
The first step in the COM+ application design phase, where the developer defines the business problems to be solved and decides what components and services are required See also logical model, physical model, three-tier architectural model
A set of qualitative assumptions used to describe a system or subsystem for a given purpose Assumptions for the model should be compatible with one another and fit the existing data within the context of the given purpose of the model
An initial system design (i e initial prototype) from information gathered during User Requirements and is used as the straw man for a Detail Design JAD
A statement of the content and internal representations which are the user's and developer's combined concept of the model It includes logic and algorithms and explicitly recognizes assumptions and limitations