Graphical information, integration

To perform an SCA, the analyst requires access to all detailed design schematics and drawings, particularly those that integrate subsystems within a system. Wire lists and other such graphical information are also usual in the SCA. When specifications for particular components either are available from a vendor/supplier or are generated within the design function, they should also be made available to the analyst during the SCA. 

Integrating Graphical Information. One important requirement is to bring together graphical objects, which may be in the form of sketches (vector-based) or bitmaps. Many software packages provide these capabilities. We present a simple example that combines a sketch and a bitmap in Figure 4. 

In the first one, the desorption rates and the corresponding desorbed amounts at a set of particular temperatures are extracted from the output data. These pairs of values are then substituted into the Arrhenius equation, and from their temperature dependence its parameters are estimated. This is the most general treatment, for which a more empirical knowledge of the time-temperature dependence is sufficient, and which in principle does not presume a constancy of the parameters in the Arrhenius equation. It requires, however, a graphical or numerical integration of experimental data and in some cases their differentiation as well, which inherently brings about some loss of information and accuracy, The reliability of the temperature estimate throughout the whole experiment with this... 

The provision of these office automation tools to the scientist must be done in a way which integrates the office activities with the lab activities. Global planning must be done for the implementation of a comprehensive system which includes laboratory Instruments, robotics, office automation, graphics, molecular, reaction and other modeling tools, information retrieval and all the other computer resources required by the modern scientist. 

When simple graphical, closed form or empirical solution methods arc not appropriate or do not provide sufficient information, the numerical time integration method can be used. This method is also known as the time history method. Most texts on structural dynamics (Biggs 1964, Clough 1993, Paz 1991) provide extensive coverage on numerical solution methods for nonlinear, SDOF systems. 

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