danielmorozoff

This is not the first experiment undertaken by Nasa/Pentagon/Boeing or the DoD. As well as similar measurements confirmed by other research teams (including foreign teams).

I totally agree it requires drastic evidence, but it could be explained by another physical action not necessarily the violation of Newton's laws or effects that supersede those laws like quantum effects

https://drive.google.com/file/d/0B7kgKijo-p0idV9tcmVIVzZrdTQ...

http://www.ibtimes.co.uk/emdrive-exclusive-roger-shawyer-con...

http://www.slideshare.net/KurtZeller/investigation-of-a-part...

Aren't new physics drawn from violations of old laws?

No you're absolutely right. This is more a holy crap paper from Nasa, this actually might work.

Actual paper from NASA recently on EmDrive (from Eagle Works) https://news.ycombinator.com/item?id=12906254

Actual paper: https://drive.google.com/file/d/0B7kgKijo-p0ibm94VUY0TVktQlU...

Thanks that makes sense.

What cut edge quality can waterjet achieve? It seems it would be a factor of the abrasive material particulate size. Has pure waterjet been employed (the pressure requirements would be huge I would assume but doable). I've seen directed explosive blasts + water cut through cars :)

https://www.youtube.com/watch?v=gHJo956BtJM

It's interesting you bring up silver/ other IR reflective materials), as I know fiber lasers cut silver.

Here's a cool paper on it:

http://onlinelibrary.wiley.com/store/10.1002/latj.201390001/....

Sort of, it has to do with a generalizable philosophy on combining underlying pieces of thought in order to argue any concept. This was popularized by Ramon Lull, and discussed in the article. He focused primarily on religion and conversion to the Christian faith (a primer to answer any question about god/religion ) for example. It turns out he also had interests in computation on recently discovered work ~2001

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

In the Arte Combinatoria Leibniz basing on these ideas makes forays into mathematical combinatorics, and did a bunch of unpublished work (Nachlass) in the area yielding some results that were not published for many years later. For example partition of n into k published by Euler later.

http://www.sciencedirect.com/science/article/pii/03150860749...

How does this compare to a co2 pump laser CNC? what conditions would water jet be preferable especially because it also requires high power consumption? Co2 lasers are cheap and pretty easy to build/ maintain. They also can put out enough power to cut steel. In my experience only special optical/thermal materials like borosilicate glass or certain plastics are not good with co2 because of heat build up/ stress and fracturing properties

Full Title:

New NASA Emdrive paper shows force of 1.2 millinewtons per kilowatt in a Vacuum and a low thrust pendulum and tests were at 40, 60 and 80 watts

And there has been much progress made in reducing the gap. Check out the polymath project and work done in collaboration with terry tao

One of the more intriguing things in this work is that they used a physical process. This makes it much more likely to work across in other animals/humans.

Have to start somewhere. This is a big deal for a number of reasons. This provides a non-invasive treatment avenue for a very common (35M worldwide and expected to double in 20 years) CNS affliction and shows incredible curative properties in animal models.

This is real science.

You can always work at jpl

Unedited title:

A Veteran Spy Has Given the FBI Information Alleging a Russian Operation to Cultivate Donald Trump

Exactly - great you can't see it on radar, but you can hear it from 50km away.

I guess anti-air applications you can imagine this should be fine.

Though this is the prevailing view in Neuroscience, in truth there is very little information on the actual computation the brain in doing biologically.

The majority of Neuroscience literature in the CNS focuses on sensory systems signal processing and on the low levels of those pipelines( vision, sound, and taste). There has been recent work in olfaction, but there exist inherent problems with state space and encoding (also olfactory neurons seem to project all over- causing even more experimental problems) to consider (one of the reasons for the attractiveness of vision, sound and taste encoding).

All higher order processing really is a black box. This is one of the primary arguments of pursuing a connectomics based approach. Some cool work in doing targeted connectomics is being done at HHMI and the Allen Institute (both with fluorescent and em microscopy). Where the latter focuses more on fly because of the resolution

https://www.janelia.org/project-team/mouselight https://www.janelia.org/project-team/flylight https://www.janelia.org/project-team/flyem https://www.alleninstitute.org/

So in short, we don't know if NN are like the brain or not.

Can anyone working in cartography comment on this?

What is the state of active research in cartography? Map making used to be one of the most prized technical skills and I was wondering where the field is moving.

First thing that came to mind was new d3 transform...

Full title: Creating artificial tissues just got easier, thanks to this Tetris-like building technique

Here is the pre-print: https://arxiv.org/abs/1610.03031

thanks

Sorry - copy paste

This group at Stanford, collaborates closely with the Takesue group in Japan, who have the scaled version (2000 Node) ising machine in another article in Science:

http://science.sciencemag.org/content/early/2016/10/19/scien...

This video is made by Steve Yeldin- the cinematographer on star wars VII and a number of other films. The companion Writeup can be found here:

http://www.yedlin.net/OnColorScience/

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

Having taken hard science in university/ during my PhD, it's hard for me to say that calc presents itself more than stats. Perhaps in engineering but only in the early years of uni, physics same thing- year two is an exposition to quantum mechanics... In chemistry and biology I would say stats/prob definitely predominates. In chemistry calc begins to appears in physical chem.

Why most people don't understand the math they learned and what it is used for, I would argue has much more to do with how they are not taught to interpret what they see around them mathematically- granted that takes years of practice, but we do not care to teach this to children.

Now streamlining math is all well and good, but we may loose some of the greatest mathematical minds by doing so. Many famous mathematicians (Euler, Lagrange for example) were slated to be someone else- professionally that is. And it took other great mathematicians to notice them.

From the article

All tech publication commissioning editors interested in paying me to publish this piece should know that some elements are fabricated, not least the clickbait headline in which I claim to have been sent to jail.

Maybe logic should be the first mathematical discipline to be taught in middle school. The notions of and / or and the representation of language in mathematical form?

Before even starting on algebra

Though i think pdfs are useful, they may be a bit advanced.

Perhaps linking integrals/derivatives into stats could be done from a more discrete approach as opposed to a continuous one first.

For example: Starting with a representation of an integral as sum of areas of rectangles (something most students can do) and then saying what happens if the width of all the rectangles gets smaller and smaller. A la Riemann

This could then tie into the pdf quite reasonably?

I think the reason calc is preferred, to prob/stats is because the intuition is much more visual than the latter. Furthermore, students up until that point spend the majority of their time studying various functional forms (conic fxns, exps/logs etc.) Functional analysis seems like an obvious next step.

Though stats/prob are perhaps more 'useful' in non-academic life. Imparting the notion of what probability actually is and how Bayes' rule fits into it requires a very gifted teacher with a fundamental grasp of the real mathematics and on top of that the ability to communicate it and link it to previously learned material aka algebra/ pre-calc. You can make it visual, but it would seem to require defining the concepts of sets, sampling, distributions etc.

The issue imo is that teachers tend not to teach the intuitions of math, rather they focus on the mechanics of it. As such, most students turn into machines calculating things as opposed to viewing math as a way to reason.

Wanted to share, in case someone hasn't heard/seen this show on HBO. I thought it was fantastic, and it touches on AI.

Yea, simply sad- remember going there as a kid, inspired my love for photography.

Seems so. Results are conflicting in terms of adverse effects. But seem to show these particles cross into normal cells (neurons for example)/ some lead to death some do not.

here is a quote though from one paper in mice at high concentrations: 'There was no effect on other haematological parameters. Histopathological evaluation of dendrimer-treated groups did not reveal any abnormalities in the low- and medium-dose groups, but at a high dose level, toxicity was observed in the liver and kidney.'

http://rspa.royalsocietypublishing.org/content/466/2117/1535

http://pubs.acs.org/doi/abs/10.1021/mp300391v

https://www.ncbi.nlm.nih.gov/pubmed/27534577