## Weekly Calendar of Seminars, Talks, and Events

### Department of Mathematics & Statistics Bowling Green State University

```Week of August 29 – September 2, 2011

Monday, August 29, 2011

1:30 PM          Advisory Committee Meeting        400 MSC

1:30 PM          Math 1150 Instructor Meeting      459 MSC

3:30 PM          Calculus Seminar                  459 MSC

Tuesday, August 30, 2011

11:30 AM         Calculator Workshop               459 MSC

12:30 PM         Math 1150 Instructor Meeting      TBD

1:30 PM          Foundational Math Committee Meeting 400 MSC

3:45 PM          Statistics group meeting          459 MSC

Wednesday, August 31, 2011

10:30 AM         R Seminar                         400 MSC

11:30 AM         Statistics Seminar                459 MSC
Dr. John Carson,
Chief Statistician, Shaw Group. Findlay, OH

LCMRL, an Improved Approach to Estimating Quantitation
Limits in Analytical Chemistry

USEPA and Shaw Environmental and Infrastructure have
developed an improved method for estimating the lowest
concentration at which 'reliable' measurements
can be made, known as the Lowest Concentration Minimum
Reporting Level (LCMRL). The LCMRL is the lowest true
concentration for which future sample recovery is
predicted to fall, with high confidence (99%), between
50% and 150%. The procedure simultaneously takes into
account precision and accuracy. Replicate samples at
each of several known concentrations are taken through
the entire measurement process. Functions for the
expectation and variance of the measurements as a
function of the true sample concentrations are
estimated iteratively, as in Generalized Estimating
Equations. The variance function is a constant + power
function, which accommodates constant variance,
constant CV and anything in between.

Given the mean and variance of response as a function
of true concentration, the measurement distribution is
taken to be the maximum entropy distribution. That is,
normal when negative measurements are possible or gamma
when they are not. At this point, we can estimate
probabilities of any event that we are interested in
the distribution of measurements as a function of true
concentration, including the probability that the
measured value is between 50% and 150% of the true
value. Quantities associated with analyte detection,
the critical level and detection limit, can also be
computed.

2:30 PM          Putnam Team Meeting               459 MSC

3:30 PM          Analysis Seminar                  459 MSC
Dr. Kit Chan, BGSU
Hypercyclic vectors for the unitary orbit of a hypercyclic
operator

Thursday, September 1, 2011

10:30 AM         Math 1210 Instructor Meeting      459 MSC

12:50 PM         Algebra/Geometry Seminar          459 MSC

1:30 PM          Math 1260 Instructor Meeting      400 MSC

Friday, September 2, 2011

3:30 PM          NO COLLOQUIUM                     459 MSC
```

A list of mathematics seminars by subject and other seminars at BGSU is available  here.

If you have comments or material for the calendar, send e-mail to Anita Serda,

If you wish to be placed on the e-mail distribution list, send e-mail to Craig Zirbel,

Previous calendars are available individually or in one single file for searching.