tanvach

12 ms·

121.
by tanvach 6y ago
Sean Carroll has a great podcast episode discussing the results with Netta Engelhardt, one of the co-authors a paper discussed in this article [1]. He also has a great series on Youtube [2] that builds up modern physics from elementary idea
122.
by tanvach 6y ago
This is awesome. For context: Fusion 360 personal license is being locked down in October, and will restrict many useful functions, including exporting projects as STEP file (industry standard file format).
123.
by tanvach 6y ago
Hedge funds overall do not outperform index funds in the long run [1]. Banks have moved mostly to sell side and their traders earn commission and bid-ask spread. For a while the most profitable shops are market makers who use high-speed tra
124.
by tanvach 7y ago
I predict the internet becomes addictive to a point where we will start seeing regulations and advisory for kids to stay offline. I'm already seeing parents my age being concerned about their kids. Also, there will be a niche demand fo
125.
Ask HN: We are planning a 6 months leave. Are there anything to look out for?
1 points by tanvach 7y ago|1 comments
126.
by tanvach 9y ago
This was exactly the route I wanted to go down until I found out about hydroponics, especially the Kratky's method. It's super easy, does not need any electronics or pumps, and I've successfully grown lettuces and herbs. htt
127.
by tanvach 9y ago
You don't necessary need ultrasound, but a modulation scheme to put the sound energy outside of hearing range. Ultrasound can be unreliable since phones have different frequency response that affects sensitivity. Also compression tends
128.
by tanvach 10y ago
I can drag the slide buttons on Chrome
129.
by tanvach 11y ago
You can also use paste( v, collapse =",")
130.
by tanvach 11y ago
Gotoky also works with on normal walkie talkie on 460MHz frequency.
131.
by tanvach 11y ago
I had the chance to try Modafinil (was prescribed by my psychiatrist). Same reaction as the author of this article. For a brief period, my head cleared, mind became less foggy, then I began experiencing negative reactions: headache, de-hydr
132.
by tanvach 12y ago
For anyone who experience 'inner chatter' when trying to sleep, I highly recommend meditation. A few months ago I noticed that during meditation classes I kept drifting off, so now I am using it as a sleeping tool. The act of focu
133.
by tanvach 12y ago
I actually see Apple branding A7 as 'desktop class' to leverage better CPU price from Intel.
134.
by tanvach 12y ago
I agree with you, again for me this comes from personal cycling experience and seeing a lot of bikers ride dangerously. My take is that the traffic fails to accommodate cyclists sufficiently, which creates a kind of 'impedance mismatch
135.
by tanvach 12y ago
Wow this brings back some memories! I spent a long time doing research in this area. You can do very cool stuff by realizing that spatial light pattern propagates as Fourier transform with a "spherical" term in the integral (havin
136.
by tanvach 12y ago
Yes that is correct, with traditional antenna design. I believe the collar itself has a hidden antenna to allow good impedance matching. Coming from communications engineering I find ultra band modulation scheme intriguing. I haven't s
137.
by tanvach 13y ago
I have written something similar comparing Julia, Python, Cython, Matlab and C++ for European options Monte Carlo simulation. http://pithawat.com/post/monte-carlo-simulation http://pithawat.com/post&#x2
138.
by tanvach 13y ago
Black-Scholes' is a big deal in economics and finance. Their innovations were risk-neutral pricing (the r terms in the equation) and replicating portfolio argument. These completely changed how to price all securities you see, not just
139.
by tanvach 13y ago
I can confirm that this works with VIM and nano
140.
by tanvach 13y ago
A question: are you getting good performance from Julia? I've seen posts that say so, but my code that does Monte Carlo simulation (both vectorized and devectorized) seem to be very very slow compared to Matlab or Numpy.
141.
by tanvach 13y ago
I agree, it is unfortunately much more rampant in those areas. Starting there should have the biggest social payoff. I think it's such an important area neglected by tech industry. One reason is that there is no commercial payoff. In f
142.
by tanvach 13y ago
Personally, I feel that the biggest problem in developing countries is corruption. Imagine all the wealth being created to disappear into bureaucracy. I've seen police bully businesses, engineering projects finish that is woefully sub
143.
by tanvach 13y ago
Great, I've been looking for something similar as well. Thanks for sharing
144.
by tanvach 13y ago
This one is lovely. Water falls from Sierpinski triangles. It's still running, will be interesting to see if this pattern is stable http://www.wry.me/hacking/Turing-Drawings/#3,4,2,1,0,2,2,2,0...
145.
by tanvach 13y ago
Static Sierpinski triangle http://www.wry.me/hacking/Turing-Drawings/#2,3,1,2,0,1,2,0,0...
146.
by tanvach 13y ago
Only if the loop moves, which actually experiences changes in magnetic field
147.
by tanvach 13y ago
Unfortunately electric current can only be generated using change in magnetic field. So this won't work with a static magnetic field, as is the case in the article.
148.
How algorithms shape our world(bbc.com)
1 points by tanvach 14y ago|0 comments
149.
by tanvach 14y ago
What would happen when a space elevator cable breaks: http://gassend.net/spaceelevator/breaks/index.html
150.
by tanvach 14y ago
For my research, we looked at optical vortex modulation schemes for a while. With polarisation (spin angular momentum), there are only two orthogonal states. With orbital angular momentum you can have infinite integer "charge" states that a

More ›