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ozborn

369 karma · joined September 11, 2012

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ozborn··on Ravens OL John Urschel, 26, retires abruptly, two days after CTE study
Where did you get the 99% from?

I thought the conclusion from that study was at least 9% of NFL players would gone on to develop CTE. This estimate was made by making a conservative (but very unrealistic estimate) that EVERY player that did not donate their brains did not have CTE.

ozborn··on Elon Musk is boring a tunnel to skirt gridlock
Can somebody who is an engineer or is familiar with the tunneling process explain why boring machines are used for tunneling rather than explosives? It seems to me the primary energy costs of tunneling are associated with converting hard earth/boulders/bedrock into rubble and then transporting that rubble out of the tunnel. Thus explosives (if properly and efficiently delivered) could deliver far more energy than a boring machine in the same time period.

What I am proposing is that instead of using a boring machine to use some kind of mobile gun platform instead. The platform would analyze with GPR the best place to fire an explosive round (through the partially cleared rubble) into the untouched earth behind it. It would then analyze the placement of the round and (depending on the ability of the round to adjust the direction of the explosive charge) detonate to increase the tunnel size. The rubble would act as a buffer to lessen the effects of the explosion inside the tunnel. Rubble could be cleared by conventional means, although electric trucks would be superior from a toxic fumes perspective. Tunnel stability would have to be handled separately.

Appreciate any feedback on where I am going wrong. I am guessing there may be cost issues with the explosive, inability for rounds from the gun to penetrate very far or accurately into the earth or safety issues with explosives that would slow things down. The latter could be dealt with though if the gun platform and trucks were self-driving.

ozborn··on If you were an elephant
Yes. It's been reported that 30% of the human brain is dedicated to visual processing, more than all of the other senses put together. I think also most input to the brain from the visual system.
ozborn··on My Life with the Physics Dream Team
I would agree - I just finished my PhD in October. I did my PhD (Computer Science) while working full-time as a research associate and I was objectively less productive as a scientist while doing my PhD. I did it for the "union card" and I am now applying for faculty positions that would otherwise not have considered me without the PhD.

It also agree it is very disruptive to family life and I think it not only drives women away from pursuing such a degree - it can in some cases contribute to women having fewer kids than they would like and/or increases the odds of them pursuing expensive fertility treatments later in life.

ozborn··on An idea for encrypted, verifiable voting
Great comment. Without privacy for verification the election is open for vote buying which I think is the biggest flaw with the proposed system.

I also like the idea of using 2 paper receipts which I think is easy for people to understand.

ozborn··on Begin LaTeX in minutes
There are at least a couple of different online LaTeX editors out there that make collaboration pretty easy and take compile worries out of the equation. I've used both ShareLaTeX and Overleaf with success, but there are other ones out there too.
ozborn··on The brave new world of robots and lost jobs
Like many living in the southern USA my air conditioning expenses are much higher than my heating expenses, I'm sure many Indians wouldn't mind air conditioning either.
ozborn··on UK votes to leave EU
Direct democracy over representative democracy? Sousveillance instead of surveillance? A politics of abundance instead of rapacity?
ozborn··on The British are Googling what the E.U. is, hours after voting to leave it
That's not evidence in my book.

If you check the history of the European Union (https://en.wikipedia.org/wiki/History_of_the_European_Union) it is history of various agreements between an ever-changing set of member states. Eventually (1992) there is the Maastricht Treaty that creates called the European Union, but that has been amended various times. To complicate things there is also the European Economic Community (renamed to European Community) and member states are in/out of various important provisions of European governance such as the Euro or the Schengen Agreement (like the UK and Ireland). The Schengen Agreement I believe includes even some non-EU members.

So people googling for "What is the EU" isn't proof of stupidity in my book. They may haven been familiar with critical elements of the EU (which were the deciding factors for their vote) but want to understand the full implications of this historic vote.

ozborn··on Why Suburbia Sucks
I suspect many (perhaps most) of the people reading that article agree that suburbia sucks - the tricky part is fixing it.
ozborn··on Telomere lengthening via gene therapy in a human individual
A good article, but if you take a look at the 7 problems that SENS "Strategies for Engineered Negligible Senescence" identifies as needing to be solved to address ageing the telomere length issue is just one subset of single issue (cellular senescence). Furthermore they appear to have fixed this only for a single cell type - white blood cells which are easy to obtain and do gene therapy on.

Nonetheless it is still encouraging progress...

ozborn··on Chicago Police Hid Mics, Destroyed Dashcams to Block Audio, Records Show
"I can't hardly imagine that most people posting here would ever consider a job where literally every word or sound that came out of their mouth during their entire working life was recorded, and likely subject to public disclosure."

It's becoming more common - professional atheletes and politicans fit into this category, even many day care workers who are paid even less than cops. I'm sure others can think of additional professions.

ozborn··on Why Are Corporations Hoarding Trillions?
Sadly it is even worse - think early 70s. http://www.pewresearch.org/fact-tank/2014/10/09/for-most-wor...
ozborn··on GitLab 8.3 released with Auto-merge and GitLab Pages
I'm a huge fan of Gitlab and use it at my workplace, but haven't upgraded to even 8.0 to try the continuous integration (CI) feature. Wikipedia makes it look pretty comparable on features to more mature CI system like Jenkins but can anybody here say how the current CI in Gitlab 8.x really compares?
ozborn··on A neuroscientist had his brain scanned for a year and a half
True, but I was pretty surprised to see how large the differences were between his breakfast/caffeine state versus fasting state. That's a substantial difference and pretty interesting. I also think just tracking MRI variation (even for n=1) is useful - this kind of detailed longitudinal tracking simply hasn't been published before.
ozborn··on Your body wasn’t built to last: a lesson from human mortality rates
As someone with a biology background I find the conclusions a little too general. Mortality curves are not only species specific, but particular for that environment. A curve using saltwater crocodiles or lobsters would look quite different with very high mortality for the young and limited mortality for the very old. The curve for humans can (and has) been adjusted by human action to give it a better shape - especially at extreme ages. So I think it should be emphasized that the curve is not some mathematical unalterable fact of life.
ozborn··on Meditation study shows changes associated with awareness, stress (2011)
It's a personal choice. For me there is definitely an implied or because I struggle to make time for exercise as it is. I also prefer almost any form of exercise over meditation. :)
ozborn··on Meditation study shows changes associated with awareness, stress (2011)
I think if you are looking for mental self improvement this Havard article may be more appropriate (http://www.health.harvard.edu/blog/regular-exercise-changes-...). The short summary is exercise. Not only do you get your "better brain", but the rest of your body benefits as well.
ozborn··on Why the wealthiest countries are also the most open with their data
Can anybody explain why Moldova is doing so well with this despite being so poor?

I can see various initiatives they have undertaken that would get them moving in the right direction such as joining the Open Development Technology Alliance (ODTA) - but I can't figure out the underlying reasons for success.

ozborn··on Amazon's German Workers Strike
As pointed out by another poster, Hollywood is a "world leader" in movie production and is heavily unionized. Another heavily unionized high tech industry in the US is the aerospace industry (Boeing) as is its competitor in the EU (Airbus).
ozborn··on Why wood pulp is world's new wonder material
It isn't overlooked, follow the link to the technical report.

http://www.tappi.org/Hide/Events/2012-Nanotechnology-Confere...

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