Design methodology process description

Design methodology is the systematic description of the technical design process of industrial air technology as an elementary part of the whole life cycle of the industrial plant. 

The design methodology is a description of a technical design process that covers the whole lifetime of the production process. Most decisions concerning industrial ventilation are made at the design stage, and are reflected in construction, operation, maintenance, service, etc. 

The first and most important aim of design methodology is to produce, by systematic analysis, a description of the design procedure that is commonly accepted and used in every process in different markets. The idea is to make a description of the technical process of design in other words, to answer two questions ... 

In the previous section, we discussed the structure of a conceptual model that can be used to represent a design methodology. But the value of this model rests with the effectiveness of the representation schemes that one employs to describe the declarative and procedural components of the model in a way that the computer can understand. Thus, we are led to the need of defining a design-oriented language for the description of the computational process. 

The third category of methods addressed in this chapter are error analysis and reduction methodologies. Error analysis techniques can either be applied in a proactive or retrospective mode. In the proactive mode they are used to predict possible errors when tasks are being analyzed during chemical process quantitative risk assessment and design evaluations. When applied retrospectively, they are used to identify the underlying causes of errors giving rise to accidents. Very often the distinction between task analysis and error analysis is blurred, since the process of error analysis always has to proceed from a comprehensive description of a task, usually derived from a task analysis. 

There is no doubt that the field of asymmetric induction occupies a very important place in modem synthetic methodology. Elegant protocols designed to cany out dipolar cycloadditions have been developed and important advances in the theoretical description of these processes have taken place as a consequence (vide infra) Diastereoselective cycloadditions have been carried out between optically active nitrile oxides, nitrones,azomethine ylides and achiral dipolarophiles, and between optically active dipolarophiles and achiral nitrile oxides and achiral nitrones. The products have b n put to good use, either by translating the cycloaddition diastereoselectivity to the construction of useful optically active acyclic intermediates, or in Ae total synthesis of natural products (vide infra) ... 

This chapter is concerned with a discussion of completely inorganic polymers that display liquid crystalline character. Until recently there was no description of such material in the literature. Part of the problem lies in the fact that most inorganic materials when prepared in the form of polymeric chains, tend to be very water sensitive which tends to inhibit further study. Furthermore, to prepare such materials in the form necessary to achieve liquid crystalline character greatly complicates the process for designing synthetic methodologies necessary to produce rod-like or discotic shapes. 

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