Department of Mathematics & Statistics Calendar Week of February 18 - 24, 2008 Monday, February 18, 2008 PRESIDENT'S DAY OPEN HOUSE 12:30 PM Graduate Student Seminar 459 MSc Papiya BHATTACHARJEE "Stone-Cech Compactification" 1:00 PM Graduate Committee Meeting 400 MSc 2:30 PM Analysis Seminar 459 MSc Dr. Alexander IZZO, BGSU "A Brief Introduction to Quantum Chemistry" ABSTRACT: I will give a basic introduction to quantum chemistry. No background in quantum mechanics or chemistry will be assumed. 3:30 PM Algebra Seminar 400 MSc Ben CARR, BGSU "Another Phan-Type theorem for Orthogonal groups" ABSTRACT: In this talk I will present a new Phan-type theorem for even dimensional orthogonal groups that arises from considerations of unitary spaces, rather than orthogonal spaces. 3:30 PM Education Seminar 459 MSc Ray HEITGER, BGSU "Timss Videos, Part II" ABSTRACT: TIMSS Part I: I will show the TIMSS video comparing a Japanese classroom with a U.S. class and consider questions to think about both before and after viewing the video. TIMSS Part II: We will discuss questions generated by viewing the video. Application to our present and future classroom deportment will be considered. Tuesday, February 19, 2008 10:45 AM MATH 112 Instructor's Meeting 459 MSc 11:30 AM Statistics Seminar 459 MSc TOPIC: "Elements of Statistical Learning" by Tibshirani et al 3:45 PM Tenured/Tenure-Track Faculty Meeting 459 MSc GUEST: Dean Don Nieman, College of Arts & Sciences Wednesday, February 20, 2008 2:30 PM L-Groups Seminar 459 MSc Dr. Wolf IBERKLEID Thursday, February 21, 2008 9:45A-11:15A Undergraduate Committee Meeting 400 MSc 10:30 AM MATH 122 Instructor's Meeting 447 MSc 1:30 PM Foundational Math Committee 400 MSc Friday, February 22, 2008 12:00 Noon Calendar Information Due to Cyndi for next week's calendar 3:30 PM Refreshments served prior to the colloquium 3:45 PM Colloquium 459 MSc Dr. Wei NING, BGSU "A Moment-based Test for the Homogeneity in Mixture Natural Exponential Family with Quadratic Variance Function" ABSTRACT: We propose a simple moment-based procedure for testing homogeneity in the natural exponential family with quadratic variance functions. In literature, solutions to this problem normally involve establishing identifiability of parameters first, then testing the hypotheses whether the data come from a single distribution or a mixture of distributions. Our procedure directly tests the hypotheses without the need to establish parameter estimability. Simulation studies demonstrate that the power of our test is comparable to the supplementary score test and the separate score test proposed by Wu and Gupta (2003), and the normalized score test proposed by Shoukri and Lathrop (1993). In these simulation studies, the methods by the others are specific to cases with a known null distribution, and our methods can also be applied to cases with unknown null distribution. Our test procedure is demonstrated on two real data sets. Saturday, February 23, 2008 Sunday, February 24, 2008
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