rrock

8 ms·

31.
by rrock 6y ago
For those interested, here is Arthur Ashkin giving what would have been his 2018 Nobel Lecture in Aspen, Colorado, in early 2019. He was unable to travel to Stockholm at the time. The talk is quite accessible if you want to understand how t
32.
by rrock 6y ago
I wonder how many people are reconsidering Tesla purchases now, and how that compares to the cost of having these workers on unpaid leave. Seems to be the wrong decision from both the ethical and the business perspective.
33.
by rrock 7y ago
That first article is published in a journal I’ve never heard of, studied a total of 27 mice, and has a strange study design that doesn’t consider random effects.
34.
by rrock 8y ago
Actually, there’s quite a bit of inherent logic to actomyosin traffic networks, as we’re now beginning to discover. For example, myosin 10 has evolved to walk along specific bundles of actin, but not so well along single actin filaments. Th
35.
by rrock 8y ago
No. A thousand times no. I did this, on the advice of “Click” and “Clack” the CarTalk brothers. Shortly after, I backed into a short concrete pillar and messed up my left rear fender. The pillar was too short to see out of the back window,
36.
by rrock 8y ago
Sometimes, used mattresses can be handy. Such as when you accidentally punch a hole in the bottom of a river, and need a way to plug it. https://en.m.wikipedia.org/wiki/Chicago_flood
37.
by rrock 8y ago
I met one person who took a hit from a pulsed laser (the -other- Nobel from today). Pulsed lasers can be even worse. Fortunately, it was in his peripheral vision. But he described hearing and feeling the pop.
38.
by rrock 8y ago
And you’ll hear the popping noise when the tissue is vaporized.
39.
by rrock 8y ago
I also work with tweezers. Back in my postdoc, we got a sample of purified melanosomes to work with. Melanosomes are small vesicles that hold pigment in your skin. Well, when we tried to trap them, we found that they absorbed the trap light
40.
by rrock 8y ago
He has to declare his conflicts annually to his institution, and has to provide updates with any new conflicts within 90 days. They would almost certainly have a conflict management plan in place for this situation
41.
by rrock 8y ago
It's straightforward to write library code in Julia that handles any type of index. If it doesn't, it is probably old code from before the time before offset arrays. Take a look at Tim's linked blog post.
42.
by rrock 8y ago
I see I'm not the only one that uses the Julia REPL to get unicode characters!
43.
by rrock 8y ago
Not really. Imagine taking a rectangular region of interest from an image. With offset arrays, you can use the original indices if that suits you. I’d say that’s strictly better than using always zero based offsets.
44.
by rrock 8y ago
I'm going to guess that psychology research is far less expensive. To give you a sense of perspective here, $25k will get you something like 4 months of a full time employee at the "fresh out of college" experience level, inc
45.
by rrock 8y ago
For me, Images.jl. The design is just great, and a lot of work (mostly from Tim Holy at WUSTL) went into the array handling code of base Julia and of Images.jl to make it all fast and easy to use. I'll give you one quick example of the
46.
by rrock 8y ago
The language design. A great deal of care went into making a language that is both expressive and performant. That’s a great combo for scientific work— or any work, for that matter.
47.
by rrock 8y ago
Congrats to everyone behind this effort! I’m looking forward to helping out with getting the image processing packages in Images.jl packages updated for 0.7/1.0.
48.
by rrock 8y ago
Wait, they thought they could replicate 50 papers at the cost of $25k each, and all in the span of one year? Not a chance. I don’t think these guys have any idea what they’re doing. I feel sorry for the funders.
49.
by rrock 8y ago
Not all of us. Unfortunately, all it takes is one screamy table to ruin a room for everyone.
50.
by rrock 8y ago
Much of the money spent on increased resolution in electron microscopy is wasted? What a crackpot indeed. This was written before the resolution revolution, but still...
51.
by rrock 8y ago
I knew this guy when I was a graduate student there in the 90s. I never went to him for anything elaborate, just some stuck ground glass joints or a box full of round bottom flasks with star cracks in them. The star cracks are bad news, th
52.
by rrock 9y ago
You do it just like a car. Merge from the lane to the turn lane. Signal your move. Stop in the intersection if you need to yield. Take your time waiting for an appropriate gap, then turn left. Don’t worry about cars behind you, they would h
53.
by rrock 9y ago
I actually have my dad’s HP-35 on my desk, and use it quite often. I patched it to a USB cable for power, just a quick hack. Would be nice to drop in a rechargeable battery pack someday.
54.
by rrock 9y ago
Having literally spent all day fighting R, I’m looking forward to getting back on the Julia side of things. Time to port more code.
55.
by rrock 9y ago
No, zero is the right number to start an offset, not an enumeration. No one starts counting from zero in real life.
56.
by rrock 9y ago
True that. The argument (at that level) is speculative. But sometimes it can be interesting to speculate.
57.
by rrock 9y ago
Carl Sagan talks about this point in Cosmos. Life arose here on Earth pretty quickly after it cooled. So the thought is that it's not difficult for life to appear on favorable, habitable planets. A probability of 0.1% may be far too
58.
by rrock 9y ago
I had exactly the opposite experience. If you were having problems with temporaries, you were probably using Matlab style vectorized operations. Back when you tried Julia, explicit loops could avoid this allocation issue. Now, Julia has
59.
by rrock 9y ago
You are my people.
60.
by rrock 9y ago
"Golly, I may be having a heart attack. I think I should take a moment to shop around for a cardiologist, so I can get quality treatment for fair prices." Don't expect market forces to come to the rescue. It doesn't wo

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