Feasibility survey, factors

Fault-tree analysis, 69-70 Feasibility survey, factors in, 14-15... 

Study estimate (factored estimate). Better than order-of-magnitude requires knowledge of major items of equipment used for feasibility surveys probable error up to 30 percent. 

The first real attempt to quantitatively survey serum levels in disease was reported in 1960 by Heremans (H14). In 1965, McKelvey and Fahey (M9) followed up, and to date over 300 papers have appeared it is not feasible to name all the contributors. In this section we will consider the factors that affect results and the normal ranges and then select and substantiate those areas where clinical value emerges as judged from personal experience of some 50,000 measurements over 5 years. 

Comparison. You are employed by an organization that wants to use a check digit scheme. By now. you are familiar with a variety of systems. An initial survey done by the company has narrowed down the choices to the ISBN and the IBM schemes. Your task is to recommend one of them to the company by writing a report, called a feasibility study. Compare the two schemes, paying attention to the following factors ... 

Although useful, even on a simple system, this approach can only trim an RCI basis size by a factor of 2-3 at most. For the lanthanide and actinide survey we are discussing here, we needed an order of magnitude or more for the mid-row anions to make the calculations feasible. 

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