×

You are using an outdated browser that does not fully support the intranda viewer.
As a result, some pages may not be displayed correctly.

We recommend you use one of the following browsers:

Full text

Title
Proceedings of the Symposium on Progress in Data Processing and Analysis

end, the instruments are ranked with the best choice having
the highest numerical evaluation.
leaking Pagjtst fpy An3lyti.ca.l Instruments
Originally, the document on testing was envisioned as a
set of standard procedures for accuracy testing for all
analytical instruments, but just as in the case of
establishing standards and specifications, much shadow
boxing was done before the first document was produced. The
testing procedure adopted for accuracy testing was one
proposed by Larry Fritz for calibrating comparators, and it
is based on making multiple readings by several operators
on a grid plate containing five rows and five columns of
grid intersectionse Each operator observes the grid plate
several times at four 90° rotations of the plate. The end
result is an evaluation for each operator, the grid, and
the instrument. Calibration parameters are computed for use
in correcting instrument coordinates, even in real-time
correction of analytical stereopiocter coordinates.
The theory behind this approach to evaluating
analytical instruments relies on the assumption that if the
instrument contains inherent accuracies in measuring
coordinates, then overall accuracy follows. However, this
approach leaves many components untested, including the
software and firmware. A task group within the Working
Group under the direction of Dr. Anita Laiho, Helsinki
University of Technology. Finland, is revising parts of the
present manual and preparing recommendations for future
Working Groups.
USER/MANUFACTURER SURVEY FOR PROBLEM AREAS
One of our most important assignments is to survey
users and manufacturers to identify areas where future
Working Groups Il/l can help most. The Task Group for this
objective under the leadership of Mr. Roger R. (Sky)
Chamard. 5. Coyote, is to make this survey and prepare a
report of recommendations.
DISTRIBUTION
Updated versions of the existing documents and the
table of manufacturers are not scheduled for completion
until the end of 1991} but the current versions are
available free of charge with the exception of the catalog
of analytical instruments which is not available at all.