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mutagen

1,442 karma · joined September 16, 2011

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mutagen··on Nectar: A Native JavaScript Compiler Inspired by Crystal Lang and Nim Lang
I'm guessing it is the compilation of dynamic languages to machine code.
mutagen··on Kalzumeus Software Year in Review 2016
I'd love a series of interviews with the people you've dealt with over the years at your Ogaki bank and their perceptions and misconceptions about your account and the transactions that go in and out of it.
mutagen··on K100.1-1966 Safety Code and Requirements for Dry Martinis (1966) [pdf]
The radiation method of preparation may have been too much for Winston Churchill, who preferred his vermouth “glance across the room at the vermouth” or, to “whisper the word ‘vermouth’ over the glass,” [0]

[0] http://rogerbourland.com/2006/07/31/my-drink-of-choice-a-dry...

mutagen··on Ask HN: What was your greatest accomplishment in 2016?
That's an amazingly unique project that now has my wheels spinning for 2017!
mutagen··on Ask HN: How old are you?
46
mutagen··on Vitamin D deficiency in pregnancy is linked to autism traits in the child
I recently came across an article discussing the relationship between vitamin D, K, A, magnesium, and calcium levels. I can't vouch for it's accuracy but it does provide a number of references if you want to go further down the rabbit hole.

[1] http://www.precisionnutrition.com/stop-vitamin-d

mutagen··on Ask HN: Does anyone still use RSS readers?
While I've scaled back my use, mostly as a part of a info-diet, I still use one.
mutagen··on The Many Lives of the Medieval Wound Man
Some fascinating illustrations, the wounds change with the times across several centuries of history. Stack Overflow for medieval medicine?
mutagen··on ICQ: 20 Years Is No Limit
There's a reasonably full featured plugin for Firefox called SQLite Manager that lets you open arbitrary SQLite files and browse / edit the contents.

https://addons.mozilla.org/en-US/firefox/addon/sqlite-manage...

mutagen··on ICQ: 20 Years Is No Limit
538342. Had a weak / compromised password for ages, I'm surprised to have been able to access my account and change to a stronger password. I'm not sure the popularity of 6 digit accounts and the password compromise times overlapped much though.

Had some great times chatting to people all around the world on ICQ. I think I still have a couple of FB friends from that era.

I was bouncing an idea of an IRC like pager app around in my head in the months before I became aware of ICQ (but well after it was already developed).

mutagen··on The “432 Hz vs. 440 Hz” conspiracy theory
Here's the rant I posted to Facebook when someone posted about this a couple of years ago. The site that was on Facebook 404s, including the Wayback Machine, so I can't share all the craziness:

The simplest argument against this is the casual way your typical garage bands tune. Not everyone is busting out the tuners and dialing up 440 Hz, when the guitar player figures out they're out of tune with the bass they just tune up to wherever they're at. With strings stretçhing, drop D tuning, and tuning down a half step, most bands would have hit the 'magic' 432 Hz every other practice and would have stayed there if it had any special properties. And this isn't just me and my buddies in the garage but musicians of nearly every style, genre, and background around the world. We'd revolt if we found our magic 432 Hz and then some clown brought a keyboard in that was at 440 Hz. This simply doesn't happen.

The 'cymatics' demonstrations are great, even the professors I work for get excited about how these demonstrate standing waves in materials. Unfortunately for the 432 Hz people the wave patterns depend on the vibrating materials. I make music out of vibrating strings, resonating wood and digital beeps and boops instead of square plates of metal (nothing against square plates of metal, I'd use those too). So maybe they should start by making pretty pictures of sand on top of a guitar to have a point with the cymatics. Also, the tuner they keep showing for the notes in their video shows their frequencies sharp or flat. They should at least get their notes right. They're also using a modulated tone with harmonics which introduces all kinds of questions about whether they're trying to prove a point or just make cool patterns with the sand. But really, who cares if it sounds good, right? Seriously, if you like your music 'detuned' to 432, go for it.

I've got a theory that altering familiar music is a great way to get us in different moods. We like remixes, right? So a 432 Hz retune might be just the thing to mellow out to. Likewise, a 448 Hz retune might be just the kick in the ass I need in the morning to get going. So retune all you like.

I do have a technical quibble with the suggested method in Audacity, the resample will do bad things to the high end of the music, all those harmonics and partials and stuff (of course, some feel all that is lost in digital music anyway so YMMV). The Audacity wiki talks about better ways to do frequency shifts. I definitely wouldn't do this to anything that has been digitally compressed at any point, your mp3 folders and itunes collection will lose even more when you start pitch shifting them. Rip the original CDs and mess with the .wav files or get the FLAC files if you're serious about retuning your music collection.

The real way to test their idea would be to blind test a bunch of music you've never heard before, some that has been pitch shifted to a variety of frequencies including 432 Hz and some that is unaltered. Score the music and your emotions after each song and see if there is a pattern to the pitch shifting. Now do this to a bunch of people and see if there are patterns in cultures, age groups, musical preferences, etc.

mutagen··on How Hackers Broke into John Podesta and Colin Powell’s Gmail Accounts
Sorry, in hindsight my comment is rather opaque. Those links are incomplete links of the phishing links contained in the emails. I wanted to highlight the difference in the screenshots in the vice.com article between seeing a clear www.google.com (due to the AMP cache) and a google.com-user-security.tk or whatever spoofed domain that got used. Point being Google is making it easy for phishers to spoof links with the AMP cache.

I'm guessing Google is relying on their existing malware detection and site reporting process to weed out pages that take advantage of this. This approach mostly works for mass spammed links and sites trying to pass on malware but won't work for targetted phishing attacks against all but the savviest of security conscious users.

mutagen··on How Hackers Broke into John Podesta and Colin Powell’s Gmail Accounts
I find the use of Google's AMP cache notable to avoid having to use a spoofed domain, you can use it to have Google serve up your content themselves, rendering the advice to 'look at the domain name of the link before clicking' even more useless than it was before

Compare:

http://myaccount.google.com-securitysettingpage.ml/security/...

in the first screenshot to the screenshot from a Bellingcat journalist:

https://www.google.com/amp/tiny.cc/...

mutagen··on Cooled Nikon D5500a Chills the Sensor for Clearer Star Photos
I recently ran across this homemade camera mod [1] to reduce astrophotography noise. There's some brief notes on creating it somewhere in the creator's (James Tobin) profile [2] but G+ isn't the happiest place to search.

Edit: Found one of them [3]

[1] https://get.google.com/u/0/albumarchive/11010321236096143315...

[2]https://plus.google.com/110103212360961433158

[3]https://plus.google.com/110103212360961433158/posts/58k5AgTx...

mutagen··on Data Mining Hacker News: Front vs. Back
The first number might be a document version, the second is most certainly a tracking number. Load that first link in a few successive tabs and see how you get a different one each time.
mutagen··on Google Noto Fonts
Google's Noto Sans CJK JP contains 9 font files, each about 13MB. You can edit fonts to subset glyphs or glyph sets you expect to use to further reduce the file size, although I suspect the CJK languages are never going to be as easy to get to fast web speeds. The JIS X 0208 subset still weighs in at almost 4 MB for a single OTF.
mutagen··on Epiphany-V: A 1024-core 64-bit RISC processor
Dynamic spectrum management, changing channels based on current usage and other factors.

https://en.wikipedia.org/wiki/Cognitive_radio

mutagen··on Using Metromile data to determine a car's gear ratios
My 2012 Subaru accelerates smoothly without jumps unless I switch it to 'manual' mode. Throttle position determines engine RPM and the CVT smoothly tracks acceleration, no artificial jerks. It was an eerie transition from shifting transmissions.

I wouldn't mind seeing similar graphs of CVT cars, where there wouldn't be distinct lines but patterns of typical driving behavior may still be obvious.

mutagen··on AMD Zen Microarchitecture: Dual Schedulers, Micro-Op Cache and Memory Hierarchy
First question, does that laptop have a SSD? Most developer machines do these days, that's the single biggest improvement to build times you can make. Then look at CPU, IO, memory utilization during builds to see where improvements can be had.
mutagen··on PyPy gets funding from Mozilla for Python 3.5 support
The Techempower benchmarks show them each having their strengths, with 3 'wins' apiece:

https://www.techempower.com/benchmarks/#section=data-r12&hw=...

The usual Techempower caveats apply: I have no idea about the implementations or any possible constraints on these, YMMV.

mutagen··on I Accidentally Some Machine Learning – My Story of a Month of Learning Elixir
The TechEmpower benchmarks are commonly mentioned. They show Go as a top performer with some occasional decent results from Scala.

http://www.techempower.com/benchmarks/#section=data-r12&hw=p...

I have no idea how well the implementations are on each of these or how well each platform works within the constraints of this benchmark.

mutagen··on The Tunguska Event
Couple of papers from the Italian team that did bathymetry / seismics in Lake Cheko:

http://sci-hub.cc/10.1007/s12210-015-0403-8

https://www.researchgate.net/publication/229759371_Lake_Chek...

Some argument against Cheko being an impact crater, referenced in the above work:

http://www.univie.ac.at/geochemistry/koeberl/publikation_lis...

Data from the Italian team that investigated Cheko:

http://www-th.bo.infn.it/tunguska/

mutagen··on Sharpest ever view of the Andromeda Galaxy (2015)
This is the imagery released in January 2015. Though not brand new, this is an amazing image to contemplate, especially in light of the continued discoveries from Kepler.

Edit: Don't miss the link in the article to the slippy map zoomable version at https://www.spacetelescope.org/images/heic1502a/zoomable/

mutagen··on Do Evil with ESP8266: Slow Down the WiFi
This reminds me of an old practical joke gone wrong.

Back around 1990 we had a college lab full of PC XT clones on an early Novell network on 'thinnet' (shared coax cable instead of star topology twisted pair to a switch). Some of the games floating around relied on the original PC's 4.77 MHz clock and ran too quickly on our 'turbo' 10 MHz machines so there was a slowdown utility that generated regular interrupts looping over a NOP to allow the games to run.

I thought it would be a great prank to put this slowdown utility on the boot floppies and AUTOEXEC.BAT of half the machines in the room and watch my classmates scratch their heads over some slow computers. Instead, it messed with the CSMA/CD (collision handling) on the network cards and essentially brought that portion of the network down. I showed up to a very angry network admin who had spent hours troubleshooting network cards and cable before finally finding one of the affected boot floppies. Fortunately (for me) he blamed another group and I escaped the full brunt of his wrath.

Shared medium, wired or wireless, always offers some extra fun.

mutagen··on A music programming language for musicians
Alda has been discussed previously on HN, including comparisons to other musical languages and some of the advantages / disadvantages of each:

https://news.ycombinator.com/item?id=10177716

https://news.ycombinator.com/item?id=10662598

mutagen··on Intermittent Fasting Is Gaining Acceptance
I typically do better having breakfast, a hearty breakfast allows me to have a light lunch without heavy cravings. I've tried skipping breakfast with mixed results. I've also tried moving my eating period to breakfast & lunch with skipping dinner with some positive results, although it can be tough when I'm with others eating or drinking after work.

I do agree though, that the concept of breakfast being important is bunk. Everyone is different and as these IF studies show, no one meal is all that important.

mutagen··on You hear a voice in your head when you're reading, right?
I don't usually have an inner voice when I read. Now I do, thank you!

Seriously though, I don't really have an inner voice, unless it is maybe something like this where I'm expressing myself and I read in my voice the thoughts I'm trying to express. I was just trying to image accents as I read and this comment sealed it that yes, I can hear accents and a separate voice when I read something.

mutagen··on Beartooth
Interesting memories indeed. I took it as part of a special program in 6th grade. We split into two groups and the group I wasn't in found a corpse just off the trail, which cut our orienteering exercise quite short. I got to explain to the school psychologist that "No, I didn't see anything, I wasn't traumatized."

I should go do some more, I'm fairly confident in my map skills but I bet there are some assumptions of mine to knock down.

mutagen··on 8088 microprocessor IP core fits in 308 LUTs, runs at 180MHz on a Kintex-7 FPGA
Note that this core runs at ~100 MHz to get equivalent performance (cycle accurate timings) to the original 4.77 MHz 8088. The big deal is the relatively small number of LUTs used, leaving plenty of room for more stuff.

There's more from the creator at http://www.eetimes.com/author.asp?section_id=216&doc_id=1328... including this nice tidbit:

The result is the MCL86, which is basically a 7-instruction, 32-bit micro-sequencer. Some of the micro-sequencer's instructions are specialized so as to allow it to rapidly decode instructions as well as nest function calls. With these seven instructions, I was able to microcode all of the 8086 opcodes in a relatively small number of micro-sequencer clocks.

A video of this running 8088mph would be awesome, they already have a number of videos of this running other stuff on a PC: https://www.youtube.com/channel/UC9B3TaEUon-araO2j7tp9jg EDIT: There is a video of it runnin 8088 mph that polpo linked!

mutagen··on Observation of Gravitational Waves from a Binary Black Hole Merger
I also enjoyed the article on the LIGO site at http://www.ligo.org/science/Publication-GW150914/index.php

Solid coverage without the fluff.

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