miratrix

6 ms·

1.
A manufacturable platform for photonic quantum computing(arxiv.org)
2 points by miratrix 2y ago|0 comments
2.
Atom-1: A Foundation Model for RNA Structure and Function(biorxiv.org)
1 points by miratrix 3y ago|0 comments
3.
by miratrix 11y ago
I'm assuming you're talking about Platform / BSP side of the ugliness. You have to look at the lineage of how things evolved to the current state - on the PC ecosystem, everything is already on enumerable buses (PCI, USB, etc
4.
by miratrix 11y ago
On the grid tied solar inverter front - the spec sheet says the battery voltage is 350~450 V, so we're looking at 108 lithium ion cells (25 x 18650 cells?) at 400 VDC nominal. This is quite different from typical lead acid battery pac
5.
by miratrix 13y ago
Transponders have to be turned off while you're at the airport and while the plane's being serviced on ground. I think 777 has 2 transponders, so you also need the ability switch from one to the other. Lastly, I believe all elec
6.
The brief life of polywater, the water that 'doesn't freeze'(theverge.com)
1 points by miratrix 13y ago|0 comments
7.
Teardown: Apple’s Latest iPhones Are Not as Green as the Company Claims(wired.com)
3 points by miratrix 13y ago|0 comments
8.
by miratrix 13y ago
Wifi scanning is also pretty terrible for power consumption as you found out. If you are on Android, my guess is that your phone was set to be connected to Wifi during sleep. You can control it by going to Wifi networks section -> menu
9.
by miratrix 13y ago
The difference between DCH (the full-on high power state) and PCH (the lowest power, waiting-for-paging state) is about 2-orders of magnitude. Last time I measured, it was about ~100mA vs ~1mA (at ~3.7V) used by the radio. So, it's n
10.
by miratrix 13y ago
The problem with $30k Tesla in 2018 that doesn't differ too much from Nissan Leaf... is that we already have the 2013 Nissan Leaf. :-)
11.
by miratrix 13y ago
I worked on electric vehicle space in early 2000s - there are many improvements for sure since then, but in the battery technology, not much has changed. 10 years ago, top of the line 18650 Li-Ion cell (same ones used in laptops and the Mo
12.
by miratrix 13y ago
The problem is that once you get down to ~$30k pure electric car, you're going to end up something that looks like the Nissan Leaf, even 5 years from now. There is no magical Tesla dust that allows them to circumvent the laws of physi
13.
Study finds Social Network use increases self esteem and decreases self control(papers.ssrn.com)
1 points by miratrix 14y ago|0 comments
14.
by miratrix 14y ago
CPU is rather a small power of total platform power consumption these days. Switching x86 to ARM won't magically get you from 5 to 50 hours of active usage. If you compare MacBook Air and the new iPad, you'll see that the difference is ac
15.
by miratrix 15y ago
I think there will be performance gains to be had, especially in applications where concurrency has been 'bolted on' (akin to the Big Kernel Lock). However, I think what makes this interesting is not the raw performance it provides, but the
16.
Transactional Synchronization Extension coming to Intel processors(software.intel.com)
64 points by miratrix 15y ago|6 comments
17.
by miratrix 15y ago
"Apple typically asks suppliers to specify how much every part costs, how many workers are needed and the size of their salaries. Executives want to know every financial detail. Afterward, Apple calculates how much it will pay for a part. M
18.
by miratrix 15y ago
The papers I've seen point to values larger than 15~30% - I've seen ~50% cited for geometries as large as 65nm, only to get worse as we go to even smaller feature sizes. [1] Threshold voltage is not really an effective knob, unless you assu
19.
by miratrix 15y ago
Leakage power is actually very significant part of the total power usage [1] and one of the bigger reasons why Intel developed the tri-gate technology [2]. Active power is the one that's related to the frequency (P ~= CV^2f). Leakage power
20.
by miratrix 15y ago
You're going to be I/O bound (network or disk), memory bound, or compute bound. It's hard to imagine the Redstone systems besting Xeon based servers in any of the three.
21.
by miratrix 15y ago
Not quite true - Greek bonds did not have significantly higher interest rates than other Euro denominated bonds. Greek bond chart: http://www.bloomberg.com/quote/GGGB1YR:IND/chart German bond chart: http://www.bloomberg.com/quote/GDBR1:I
22.
by miratrix 15y ago
I think it's more that the "mainstream" computing has moved on from desktops to laptops. Instead of targeting the latest and greatest design at 130W/90W TDP desktop parts and downsizing it to a laptop, they've turned it around and is starti
23.
by miratrix 15y ago
If you're interested in these patent issues, you should add FOSS Patents ( http://fosspatents.blogspot.com/ ) to your RSS reader. Florian has the list of patents being asserted by HTC and some analysis of them at http://fosspatents.blogspo
24.
by miratrix 15y ago
I think you may have missed one of the central point that Urs was trying to make: "Software development costs often dominate a company’s overall technical expenses, so forcing programmers to parallelize more code can cost more than we’d sav
25.
by miratrix 15y ago
Something based on the Cortex-M series ( http://www.sparkfun.com/products/10664 ) probably is a better ARM starter board for someone who's getting started on the embedded stuff. Cortex-A series ARMs are completely different beasts in terms
26.
by miratrix 16y ago
mSv stands for milli-Sievert, and uSv is micro-Sievert. 4000 uSv would be equivalent to 4 mSv, which is where Randall has it listed.
27.
by miratrix 16y ago
You can also use the "dirs" command (I think part of bash as well) that tells you the state of the stack. If you set the -v option, you can get the depth of different directories, and you can just do pushd +N to jump to the specific direct
28.
by miratrix 16y ago
The group is setup to allow users to respond to all... and there are about 30000 users on the mailing list. It's fun for a bit, but I'm guessing it was meant to be an announcement only list. Any googlers up?
29.
Google Groups for CR-48 Pilot Users(groups.google.com)
2 points by miratrix 16y ago|2 comments
30.
by miratrix 16y ago
The problem is that Facebook's claiming that email is just another piece of metadata about a user. However, from Google's point of (and rest of the non-Facebook web), email is not a metadata, but the key identifier around which all of the

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