Commercial Computer Programs

Clearly this process can rapidly become tedious, especially when one thinks about tracing hundreds or thousands of rays from many different points on the object (field points). Fortunately many computer programs have been written that allow us to harness the power of personal computers to do this. Nonetheless, most commercial computer programs use the exact same technique as that which we have described. 

AIM data have been obtained with the commercial computer program MORPHY98, which is available from http //www.ch.umist.ac.uk/morphy, or with the AIMPAC suite of programs, developed by Bader s group at McMaster University (Canada), which can be obtained without charge from http //www.chemistry.mcmaster.ca/aimpac. 

At the first level of detail, it is not necessary to know the internal parameters for all the units, since what is desired is just the overall performance. For example, in a heat exchanger design, it suffices to know the heat duty, the total area, and the temperatures of the output streams the details such as the percentage baffle cut, tube layout, or baffle spacing can be specified later when the details of the proposed plant are better defined. It is important to realize the level of detail modeled by a commercial computer program. For example, a chemical reactor could be modeled as an equilibrium reactor, in which the input stream is brought to a new temperature and pressure and the... 

The equation systems can be solved by different commercial computer programs (Chapter 1, Section 1.2.3). 

Several commercial computer programs to aid in the design of vessels to the ASME code and other international codes are available. These programs will normally be used by the specialist mechanical engineers who carry out the detailed vessel design. Some examples include... 

The facility and accuracy of empirical calculations for carbon have been exploited through commercial computer programs for general predictions of C chemical shifts. As with calculations (Section 3-2e), the results are only as good as the data set used in their creation. The programs assume that the effects of multiple substitution are additive, unless specific corrections have been incorporated. Unconsidered or nonadditive phenomena, such as conformational and other steric effects, can cause unexpected deviations between observed and calculated chemical shifts. 

Commercial computer program for regression analysis Hardware essentailly any PC... 

Perhaps, you are wondering how we would choose the best levels for a mixture study with many components, for which we are not able to visualize the mixture simplex surface. Fortunately, this choice need not be of concern to the researcher. Various commercial computer programs are available to do this for us, using certain statistical criteria. 

The diagonalization of A (p. el05) is an efficient technique for solving the eigenvalue problem using commercial computer programs (diagonalization is equivalent to a rotation of the coordinate system see Rg. 7.7). 

II.5.8 Commercial Computer Programs for Modelling of Impedance Data... 

Comparison of commercial computer programs for investigation of kinetics of pyrolysis and oxidation reactions of heavy petroleum products... 

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