End of Semester Report PFF Program Broome Community College:
1. Fred Kluempen gave a seminar at BCC on Fair Division. We had most
of our BCC Math department attend as well as some students. He gave a general
history of fair division, described some fair division schemes and showed
us where fair division is used in the real world. It was an excellent presentation.
2. Jeff Forrester gave a talk to our Quality Assurance students. The
students wrote up a summary of the talk. That summary is included below.
Jeff did a wonderful job.
3. Three graduated students are teaching here at BCC Lori Fern is teaching
Beginning Algebra (MAT 092). She has some really challenging math phobic
students and is doing an excellent job motivating them.
Dan Clouse is finishing a temporary full-time position here at BCC.
He is currently teaching Math for Elementary Education Majors II (MAT 120),
Finite Math (MAT 117), and Calculus I (MAT 181).
Fred Kluempen is teaching Calculus II. I observed Fred and he is doing
a wonderful job.
4. Luis Moreno plans on doing a workshop on the TI calculators in Fall
2000.
5. We also hope to host a seminar where Mr. Hooper will come and speak
on a topic in statistics.
It has been a great year and wee look forward to continuing in the
fall.
Jean Krichbaum
Broome Community College
Also, here is a report about Jeff Forrester's presentation that was
done by a BCC student:
Jonny Zuniga
SQC 200
Mr. Sliwa
March 20, 2000
SUMMARY FROM THE TALK GIVEN BY JEFF FORRESTER:
Assessing Measurement Data
If we use an instrument or gage to measure several parts from a process
and record the results, we must recognize that the resultant data represents
the variation in the parts as well as the variation in the measurement
process. i.e. Variation in data =Variation in parts + Variation in measurement
Some of the following factors could be sources of measurement variation:
o Environment: temperature, humidity, and distractions
o Material: burr on part, rounded edge, and material type
o Method: cartwheel method, moving finger method
o Gage: discrimination, accuracy, and fitness of divisions
o Operator: differing eyesight, steadiness of hand, metrology training.
The speaker explained the various terminology that is used when doing
Measurement System Analysis (MSA). I think the most important terms are:
o Gage Accuracy: The ability to produce and average measurement value
which agrees with the standard
o Gage Precision: The ability to get very close results.
o Combined Gage Variation (also called Gage R&R): The Gage R&R
method lets you break down potential variation into different categories:
part-to-part, repeatability, and reproducibility. With this feature, you
can determine if variation is due to a problem with the device or machinery
making the measurement or if it is caused by the operators.
Combined Gage Variation was the focus of the talk. Because of its importance,
the speaker even gave us the formula for Gage R&R, which is:
CGV (R&R)= (Variance Repeatability)+(Variance Reproducibility)
Actually, we are getting the real process variation with this formula.
Another element that we have to take in consideration is the way in
which the data has been obtained. One way to do this is to label the parts.
Once we have computed our repeatability or reproducibility variances
we can define how much of the actual process variation is due to the repeatability
and reproducibility by dividing the desired variation by the total variation.
This is a really important step that may result in an improvement of our
process like the need for more operators training.
Mr. Forrester also mentioned that these errors could be present in
variable data as well as attribute data.