Re: Fwd: Re: FW: [Ifeffit] Undergraduates and EXAFS

2006-07-02 Thread Carlo Segre
On Sun, 2 Jul 2006, Scott Calvin wrote: So this makes it perfect for a talented undergraduate. Undergraduate interns have the time to spare for that 80-hour learning curve; that only takes the first two weeks of a summer internship. And there's no reason that the best of them shouldn't have be

Re: [Ifeffit] Right way of choosing E0 in Athena

2006-07-02 Thread Matt Newville
Hi Vadim, 1. Many experts advise to do multiple k-weight fitting to deal with correlated variables. Should one always use multiple k-weights, or is it better to switch to one kw value once the correlations are taken care of – to refine the remaining variables? Does it make any difference? I wo

Fwd: Re: FW: [Ifeffit] Undergraduates and EXAFS

2006-07-02 Thread Scott Calvin
Thanks for the references, Anatoly! And, what the heck, I might as well give my opinion on the general topic. While the referee's argument is understandable, I think there are few "physics" fields in which undergrads can make greater contributions than in the characterization of materials usin

[Ifeffit] Undergraduates and EXAFS

2006-07-02 Thread Scott Calvin
Hi all, I'm trying to compile a partial list of EXAFS references that include undergraduates (or high school students) as coauthors. The reason is that one of the referees on an earlier grant proposal of mine expressed some doubt as to whether undergraduates would be able to participate in a

RE: [Ifeffit] Right way of choosing E0 in Athena

2006-07-02 Thread Frenkel, Anatoly
Vadim, The ss2 of multiple-scattering (ms) paths and single-scattering (ss) paths are not simply related unless the legs in the ms paths are collinear. In that case, as published in Frenkel, Stern, Qian, Newville, Phys. Rev. B, 48, 12449 (1993), if the intervening atom is a first nearest nei

[Ifeffit] Right way of choosing E0 in Athena

2006-07-02 Thread Vadim G Palshin
>Since you know the spectra are well calibrated relative >to one another, I would use a single E0 for all >background subtractions. In such a situation, I tend to >play with the background parameters for one of the >spectra and then apply these background >parameters to all other spectra. Than