It has been a while since posting about presentation techniques. This time the post remains short. If you are preparing for your SAS2012 or IUMRS-ICEM presentation, and you are looking for that little bit of additional zest to keep your audience awake… Talk with your hands! Italians are well-known for their gesturing during their presentations and discussions, but other nationalities may have more trouble gesturing and therefore remain completely monolithic during a 15-minute talk. This has at least two drawbacks, firstly that you are tensing up during your presentation as you are getting tired from standing in the same position all the time. The second is that the message you are trying to convey may not have as much power as it would have were it punctuated by appropriate arm waves. For those in need of either a few minutes distraction or a demonstration of supporting arm-gestures during talking, check out this video from the “rap news”-series . Additionally, that video contains some cultural information on the country where the big SAS conference will be held later on this year. Enjoy!
I have worked on monte-carlo procedures for a while now. Initially (while working for Aarhus University), I managed to make these work to extract the particle size distribution from isotropic scattering patterns, and it works fine and quick. Now though, I managed to get this trial-and-error procedure to work for whole 2D pattens as well! The added dimension adds some coolness to the whole thing, and carries extra information to boot. I will be showing the details and results in my upcoming talks (hopefully at SAS2012 as well), but for now, please enjoy the short movie where the new method is applied to a measurement of PPTA fibre:
So, I could not do what I promised last time, the Monte-Carlo fitting works on perfect simulated scattering patterns but is as of yet unable to deal with the addition of a flat background. So I will have to take a raincheck. In the mean time, I have made two videos (part 1 and part 2) together with some colleagues during my time in Denmark. The video demonstrates small-angle scattering using laser light scattering on a hair. In part 2, the diameter of the hair is calculated. (I watched too many Carl Sagan videos and I am impressed and encouraged by them…) Check out the videos: Part one: Part two:
Hi all, I have made some new software available on the “software” page. This is the saxsfit (yes, terrible name, I know) routine I normally use for fitting SAXS curves to model functions. Nothing special, except that it can also deal with (time)series quite nicely. Also there is documentation for some of the packages. I hope to have the documentation complete for all packages in the future, but for now is still a work-in-progress. Next time, a Monte-Carlo fitting routine, which should come complete with introductory Youtube movie! Cheers! B.