Rensselaer Center for Open Source Software

Ji Woong Baek

When I checked my repository, I noticed that some of the code went missing for almost no apparent reason.

I reasoned that during my clumsy attempt to resolve conflicts in the code, I accidentally deleted a section of the code.

The newest PR adds the code back in with the formatting changes.

Also, speaking about formatting changes, now Github properly recognizes that the header file is intended for use in C (though, it should work in C++ also.)

OpenIRT • 22 hours ago
Adam Susser

The results of the very first dynamical friction test are in, and... neither dwarf galaxy was all that effected by dynamical friction. That is, running the simulations with dynamical friction look pretty similar to running them without. But that doesn't mean much yet. I left enough wiggle room open through my approximations that I still can't be sure dynamical friction is unimportant. So now it's time to refine those approximations. And the first place I think we might be losing a lot of dynamical friction are those infinite spikes. That is, we might be jumping over them too hard. Professor Newberg had an interesting idea for how to treat the spikes that I'm going to try, which should hopefully tell us how important an infinite density spike in a caustic ring is.

Oh, did I promise videos in the last post? Since the simulations are almost identical with and without dynamical friction, I'm just going to post one video for along-the-flow friction and one for against-it friction. If you're curious why the videos end before they reach 10 Gyrs, that's because they weren't supposed to go for 10 Gyrs in the first place. I let them end early (actually my computer somehow got unplugged and then ran out of power part-way through visualization) because by the point the video ends the approximation that stars are perfectly bound to the dwarf galaxy has already become horribly wrong.

Videos: http://youtu.be/LxmR9dzr3rU http://youtu.be/y4N9AafOn3w (As before, purple is dark matter and yellow is luminous matter.)

Jim Boulter
So far so good on the iOS application.  Working on getting voting sorted out, and then search/adding videos to a party.  After that, joining new parties, and other cool features.  The app is/will be where we wanted it to be for this summer, so mission successful on the iOS side.  Almost over for the summer, only two meetings left.  We'll be presenting again at meeting 12, so I'll hopefully have the ability to display a demo then.

-Jim
Aaron Gunderson

I never really knew how to use Javascript before and the other day I decided to learn. And now I know what I was missing. Javascript allows you to do so much cool stuff! I used it to make inline editing for the assignment types data and draw graphs for the grades. Super useful stuff that you can do with it. So glad I know how I can use it to help me know. John and I worked hard playing with the numbers and now have a relatively good equation to weight the assignments priority. We really wish we had the total points a professor will hand out in a semester but it isn't something that is available for every professor.

David Koloski

Over the past week or two, we've been working on a rewrite of o2dtk (eek!). There are a few reasons why we decided to do this:

  1. We wanted to expand the scope of the project to include all kinds of Unity tools instead of just 2D ones.
  2. We wanted to simplify, generalize, and streamline the workflow.
  3. Who likes saying o2dtk all the time?

So the project is now formally known as Lead (Pb) and we aim to make a suite of tools for developing all sorts of things with Unity.

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