Common use of Names and Definitions Clause in Contracts

Names and Definitions. There are so many pieces of data and so many different models and so many kinds of operations that it is necessary to have a chapter that gives formal names and definitions to these entities so that later discussion will not be burdened with interruptions for naming and for definitions. Figure 4 shows most of the items we need to name and define. Before we give formal definitions, however, it will be useful to discuss the major items in the figure in a general way. Terms in bold in this general discussion will be formally defined in the next several sections. One theme running through Figure 4 is identifying which parts are mechanism-dependent and which parts are chamber-dependent (the evaluation process is independent of both). At the top left is the principal mechanism reaction listing with its kinetics data and species photolysis data. This mechanism is the one being evaluated and it must be found to be independent of all xxxxxxxx. As described in Chapter 1, however, the principal mech- anism cannot be directly tested with smog chamber data because xxxxxxxx have unique wall-mediated reactions for species that appear in the principal mechanism. Thus, each chamber must have its own set of reactions which compose the chamber-dependent aux- iliary mechanism. These auxiliary mechanisms must be added to the principal mechanism to produce combined mechanisms, one for each chamber. The combined mechanisms are thus dependent upon both the principal mechanism and the particular chamber. These combined mechanisms are the ones used in chamber simulations, and therefore, are the mechanisms that are tested. It is a separate step in the evaluation to conclude that when the combined mechanisms are accurate in each chamber, then the principal mechanism is accurate in ambient air. Below the mechanism part in Figure 4 are the component parts and operations that are concerned with converting chamber data into simulation data. Chamber data are Chamber 3 Principal Mechanism Reactions Species VOC Rules B A X-sections Quantum yields chamber- independent + Chamber Auxiliary Mechanism Reactions Chamber Auxiliary Mechanism Reactions Chamber 1 Principal Mechanism Reactions Auxiliary Mechanism Combined Mechanisms, One per Chamber Principal Mechanism Reactions Auxiliary Mechanism Reactions Principal Mechanism Reactions Auxiliary Mechanism Reactions Chamber 2 mechanism-dependent, chamber-dependent Chamber 1 Chamber Auxiliary Mechanism Reactions Reactions chamber-dependent Data Documentation Documentation mechanism-dependent, chamber-dependent Run Simulation Data Run 3 Documentation Documentation B Initial Measured Initial Conc. Run 2