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user070223

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www.youtube.com 3mo ago

The Elegant Laminar Flow of Moroccan Tea [video]

user070223
1pts1
hackaday.com 3mo ago

Microwave Cruicble

user070223
2pts1
en.wikipedia.org 8mo ago

Band of Holes

user070223
48pts12
random.tastemaker.design 8mo ago

Randomness Testing Guide

user070223
44pts10
ivonblog.com 12mo ago

Running PostmarketOS on Android Termux proot without a custom ROM (2024)

user070223
48pts7
100r.co 1y ago

Cooking using solar evacuated tubes

user070223
21pts1
news.ycombinator.com 1y ago

Ask HN: Tool to detect what user searches on your webpage

user070223
1pts0
artofproblemsolving.com 1y ago

Don't Fall into the Calculus Trap

user070223
2pts0
cims.nyu.edu 1y ago

Questions: A Mathematical Conventions Survey

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1pts0
yellowball.fm 1y ago

No BS Podcast Hosting

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3pts1
topology-tool-kit.github.io 1y ago

Topology ToolKit Efficient, generic, easy analysis and visualization

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2pts0
www.youtube.com 1y ago

Converging Web Frameworks – ViteConf – Minko Gechev [video]

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1pts0
www.theguardian.com 1y ago

More women than men have added their DNA to the human gene pool

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2pts1
www.nature.com 1y ago

Stem cells reverse woman’s diabetes

user070223
293pts48
www.sciencedirect.com 1y ago

Earth system impacts of the European arrival to the Americas after 1492

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6pts0
en.wikipedia.org 2y ago

Chillingham Cattle

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1pts0
www.youtube.com 3y ago

Reinforcement Learning Fundamentals

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2pts0
en.wikipedia.org 3y ago

Jacob Ziv (LZ77) has died

user070223
6pts1
en.wikipedia.org 3y ago

Weather Lore

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3pts0
simplicable.com 3y ago

Simplicable Encyclopedia

user070223
3pts1

Teapot spout placed on the bottom where the pressure is highest. The spout shape change from large opening to smaller one. it is curved like an S(and not U) shape(like a river band?) to "straighten" the water getting rid of eddys which can form after the first curve(which you have to have to pour). The spout has a sharp tip which prevent the pot from dripping (ig nobel prize winner, teapot effect) The tea is poured from a high distant to the cup(laminar) which cools the tea and causes the water to splash which traps sand(remember we are in the Sahara) by making a foam along with the green tea saponin molecules which have of it attracted to water and the other repelled. The sugar makes the liquid viscous along the mints' essential oils which keeps the bubbles.

DIY Soft Drinks 3 months ago

Another fun use for gum arabic is making watercolor paints, you can do it with your kids sourcing the pigment from different soils. pour water and let the heavy big particle fall to the bottom and source the small ones from the top and mix some ingredients

Her logic seems reasonable but stating that the fibers "return to their original crinkled state" is missing the fact that the fiber go through the process of spinning to improve tensile strength (as well as the options of making an infinite yarn from finite fibers by twisting them together). regardless to return to original "crinckled state" they need to overcome those forces as well as the forces of the geometry of the knit(on a different scale).

BTW Rayon is also made from cellulose, cellulose II. While Cellulose I(natural) is metastable it can be converted by disolving in lye to a stable form (beta-gllocouse molecolue chain goes from being parallel to being anti parllel which increases the # of hydrogen bonds as well as helping create a more stable 3d structure) which again improve tensile strength and resist wrinkles on a different scale.

Inspired by this post & TF comment I tried symbollic regression [0] Basically it uses genetic algorithm to find a formula that matches known input and output vectors with minimal loss I tried to force it to use pi constant but was unable I don't have much expreience with this library but I'm sure with more tweaks you'll get the right result

  from pysr import PySRRegressor

  def f(n):
      if n % 15 == 0:
          return 3
      elif n%5 == 0:
          return 2
      elif n%3 == 0:
          return 1
      return 0

  n = 500
  X = np.array(range(1,n)).reshape(-1,1)
  Y = np.array([f(n) for n in range(1,n)]).reshape(-1,1)
  model = PySRRegressor(
          maxsize=25,
          niterations=200,  # < Increase me for better results
          binary_operators=["+", "*"],
          unary_operators=["cos", "sin", "exp"],
          elementwise_loss="loss(prediction, target) = (prediction - target)^2",
)
  model.fit(X,Y)
Result I got is this:

((cos((x0 + x0) * 1.0471969) * 0.66784626) + ((cos(sin(x0 * 0.628323) * -4.0887628) + 0.06374673) * 1.1508249)) + 1.1086457

with compleixty 22 loss: 0.000015800686 The first term is close to 2/3 * cos(2pi*n/3) which is featured in the actual formula in the article. the constant doesn't compare to 11/15 though

[0] https://github.com/MilesCranmer/PySR

uMatrix is archived and I think uBlockOrigin is now advised to use(which incorporate uMatrix by enabling advanced settings)

For those who want to try blocking more stuff you can enable hard mode and bind relax blocking mode keyboard shortcut

I'd recommend also enabling filter lists(I advice yokoffing/filterlists and your region/language)

https://github.com/gorhill/uBlock/wiki/Blocking-mode:-hard-m...

A question for strcat / other Graphene developers:

Can you clarify what can one expect from legacy extended support. Will old devices get any more updates? how long, how often, is it just security patches etc..

Thanks for you hard work!

How to Firefox 12 months ago

I see you're quite active regarding FF. Nevertheless I'm not sure what you're talking about. I've installed Betterfox ESR on Windows, Linux and Android with no apparent issues.

In general at high enough depth the ocean temperature is constant[0]. At high latitude like the southern ocean it's constant at whatever depth. I think the surface ambient temperature is below(cooler) the temperature where the water density is the highest around 4 degrees for pure water(water has negative thermal expansion which causes it to expand and float!), for southern ocean salinity is between 33-34 and maximum density is below 0[1] but still ambient might be lower which means the colder water is lighter.

https://en.wikipedia.org/wiki/File:ThermoclineSeasonDepth.pn...

https://en.wikipedia.org/wiki/File:T-S_diagram.pdf

I've skimmed the result couple of weeks ago, and if I remember it states that there from all machines which takes t time to accomplish something there is one such that sqrt(t) memory is used. so it's at most but not on avg nor amorotized[not sure if et even make sense it the space where the problem lies] (you take the least memory hungry machine)

Inspired by Steve Brunton(on YT) and his colleague, a platform that makes working on/with dynamical systems much easier in terms of sensing, modeling and controlling the dynamics. Eventually iterating quickly using SOTA techniques(compressed sensing, super-resolution(spatial-temporal tradeoff), RandNLA, ML) without the need to understand them deeply

Sensing effectively by optimal (re)positining of the sensors (both number of sensor and physical placement) Think spatial sensor/data fusion, perhaps using more cheap sensors rather than few expensive

Building a model of the dynamics (based on both reasonable assumption about the system based on grounded physics, and dynamical interpretation of the sensor's data (PySINDy, DMD)

And eventually controlling the dynamics

Love to get your feedback, ideas, if you know about such products/business etc, how could it help any business, real life application, if it interests you, anything :)

A great place to mention Karl Bushby whom is on his way from Punta Arenas, southern Chile to his home in the UK since Nov 1998 by mostly hiking. He crossed the Darien Gap, the Bering sea walking on ice / glaciers / swimming, as well as swimming the Caspian sea. In Mongolia he trained to work with camels Had a lot of issues of course with Russia due to crossing the Bering sea, and maybe the war, as well as covid lockdown in countries, limited days issued for visas etc. And he just left Turkey and entered Europe! so the only major challenge is swimming the channel.

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

Indeed, one great path to finding those lost civilizations is to follow river vallies, Atlas pro[0] says there is no consensus on past rivers/bodies of water as evident by different maps of the region, but one can follow (underwater) river sediment which were deposited to the sea. During oil search such area was found in Cap Timiris, Mauritiania. Satelite radar image of the area from 2015 did reveal those rivers beds, Tamanrasset River seems to be the biggest, with a big drainage basin. Trees and shrubs indeed grow there.

[0] https://www.youtube.com/watch?v=r-dZj1ZdRtY

The Llama 4 herd 1 year ago

Never trained a model, but the precision confused me as I've never considered how many bits should be reserved for exponent/mentisa. Has anyone architected a model(somehow) such that it has a free hand at using the give bits / choosing the type, or changed types from layer to layer, I mean surely when training for example vision models the first layers deal with the "big(yet simpler) picture"(light/dark, lines etc) where as the last layers are with the fine details etc.

Even though it may not suitable for (existing) hardware impl, it may be advantageous in other place for example in learning rate speed.

AnkiDroid (Anki - Spaced repetition app)

AntennaPod (Podcasts app)

Coffee (quicktile alowing adjusting how long will the display will stay awak)

NetGuard (VPN to control app internet access & domain based ad blocking)

Newpipe (alternative youtube & other media sites frontend)

OsmAnd (Navigation based on Open Street Map)

Sky Map (google's sky map)

Telegram FOSS (Telegram client)

VLC (media player)

WiFiAnalyzer

I first encountered this problem solving technique of looking at the problem in higher dimension from lectures by tadashi tokieda(referenced in the video). I highly recommend any video of him.

I dont rememer finding many examples, nor a reference to it from common problem solving techniques lists(terry tao, aosp? etc). I think it deserve it's place with a catchier name perhaps

I remember reading about some guy claims using past wspr database ?timing? anomalies to find mh370 flight path (i.e a plane crossing line of communication causes measurable disturbance) though people have debunked it