Pattern 16.8 Basic Design

A draft design has been achieved using Pattern 16.8, Basic Design. 

The context is action refinement making decisions that implement or put more detail into an abstract (set of) actions. This may be part of a computer system design (Pattern 16.8, Basic Design) or part of the reengineering of a business process (Pattern 14.1, Business Process Improvement) and may in particular be the engineering of the business process of which using a computer system is a part (Pattern 15.5, Make a Context Model with Use Cases). 

Optimization should be undertaken after object design (see Pattern 16.8, Basic Design) and link ownership (see Pattern 16.11, Link and Attribute Ownership). Juggle with object locality (see Pattern 16.12, Object Locality and Link Implementation). 

Dry gas seals are in the positive seal class and have the same basic design features as mechanical face seals with one significant difference. The dry gas seal has shallow grooves cut in the rotating seal face located part way across the face. The grooves may be in a spiral pattern the exact location and pattern vary from one manufacturer to another. Lubrication and separation is effected by a microscopically thin film of gas. This implies some finite amount of leakage, which is quite small but must be accounted for in the design. 

Two-phase mass transfer and heat transfer without phase change are analogous, and the results of mass-transfer studies can be used to help clarify the heat-transfer problems. Cichy et al. (C5) have formulated basic design equations for isothermal gas-liquid tubular reactors. The authors arranged the common visually defined flow patterns into five basic flow regimes, each... 

Pattern 16.12, Object Locality and Link Implementation Locality of an object— where it resides and executes—can be decided independently of basic design, employing appropriate patterns to implement links and messages crossing locality... 

Use Pattern 16.8, Basic Desiga to sketch interactions between subcomponents. While drafting a basic design, also apply appropriate design patterns (see Section 16.2, Detailed Design Patterns) to improve decoupling. 

The benefits of encapsulation become clear in this example. Do we really want to chase all the way down 5 and 6 to see how a book knows its title in this piece of design See Pattern 16.9, Generalize after Basic Design. 

Apply generalizations after you complete the basic design. A wide variety of design patterns are directed at generalization and decouphng. Most notable are Pattern 16.15, Role Decoupling and Pattern 16.16, Factories. 

Fig. 8.10. Teflon-glass valves. A number of variants of this basic design are on the market. A "straight through" flow pattern shown here for valve (

In its basic design, the equipment is similar to a 2-D TL glow-curve system as described previously, but with the addition of a modified Twyman-Green, Michelson type, interferometer between the oven and the photomultiplier. As the sample is heated, the TL signal is recorded while the movable mirror of the interferometer is scanning a given optical path difference in a preset number of steps. The interference pattern corresponding to each one-way scan... 

The behavior of RPs is dominated by the arrangement and the interaction of the stiff, strong fibers with the less stiff, weaker plastic matrix. The features of the structure and the construction determine the behavior of RPs that is important to the designer. A major advantage is the fact that directional properties can be maximized. They can be isotropic, orthotropic, etc. Basic design theories of combining actions of plastics and reinforcements have been developed and used successfully. Different fabric and/or individual fiber patterns are used to develop different property performances. 

It is believed that myoglobin and haemoglobin are derived from a common ancestral gene and that the pattern of folding of the globin chain represents Nature s basic design for 02-carrying proteins (see the next section). 

Figure 636 Schematics of some common flow field design patterns. Many other basic design features have also been tried as well, including fractal and spotted post designs. (Image by Soowhan Kim.)...

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