Editorial: Fall 2017

Editorial, Issue: September 2017

Statistics Seminar for Fall 2017

Epidemiologic studies and disease prevention trials often seek to relate an exposure variable to a failure time that suffers from interval-censoring. When the failure rate is low and the time intervals are wide, a large cohort is often required so as to yield reliable precision on the exposure-failure-time relationship. However, large cohort studies with simple random sampling could be prohibit...

Fall 2017 Goodwillie Calculus Seminar

We want F to satisfy some kind of Mayer-Vietoris property, or excision. Hence, we assume C and D are proper, in that the pushout of a weak equivalence along a cofibration is also a weak equivalence. We’ll also ask that in D, sequential colimits of homotopy Cartesian cubes are again homotopy Cartesian, and we’ll elaborate on what this means. We also place a condition on F : Goodwillie calls it “...

Seminar projects proposals Fall 2017

Introduced in 2009 in [6] bitcoin is one of the first decentralized currency. It’s called crypto-currency, since it uses cryptography to secure transactions and assets. Bitcoin operation is based on so-called public ledgers that can be shortly described as follows. Assume there are two parties Alice and Bob (as usual), such that Alice wants to buy something from Bob. Assume they both have walle...

Math 261 A - Fall 2017

In practice, there is no guarantee that the assumptions are satisfied for any given data set. From the summary statistics, such as SSR, SSRes, t-and F -test statistics or R it can be very hard (or impossible) to tell whether the assumptions are satisfied or violated. Thus we need other numerical or graphical methods to check the assumptions. The linearity is most often simply checked with scatt...