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Evelyn Mitchell
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6502 in your browser!
 
This. A thousand times this. A transistor-level simulation of a full 6502 CPU. Running in your browser. You can actually zoom in and pan, and see the high hand low states of each and every transistor as it works.
The Visual 6502 · FAQ Blog Links This simulator uses HTML5 features only found on the latest versions of browsers and needs lots of RAM. If you have trouble, please check compatibility. Keyboard controls: 'z' to zoom in, 'x' to zoom out, 'n' to step the simulation. Mouse controls: Left-click and ...
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Cool. My answers on My Linux Rig were posted... 
Kevin goes back and forth between GNOME and Xfce, which I think is very cool. It’s like being bilingual. I also appreciate Kevin’s work on Rawhide, Fedora’s rolling repository. I’ve had some problems...
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" The new law eases the process of raising that first $1 million by letting people ask their neighbors for up to $5,000. While companies must inform investors of the risk and provide quarterly reports, they can skip the audit and other expenses typically needed to attract investors.... Colorado's crowdfunding law requires the investor and the company be in the state. It also requires the company to provide quarterly reports, inform investors of risk and spend 80 percent of the proceeds in Colorado. Companies are limited to raising $1 million, but can raise $2 million if they provide audited financial statements."

This is great news for small business in Colorado.
Gov. John Hickenlooper signs equity-crowdfunding law to let state residents buy stock in local companies
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Graph Coloring for kids
 
Here is the kit of uncolored originals for my Math for seven-year-olds project on Graph coloring, Chromatic numbers, and Eulerian paths and circuits.  Just print, copy each folio double-sided (with correct orientation, the cover is one-sided), fold each folio in half, assemble the folded folios side-by-side, and place into the cover to form your booklet, with a few staples for a binding.  See http://jdh.hamkins.org/math-for-seven-year-olds-graph-coloring-chromatic-numbers-eulerian-paths/

Andrej Bauer has assembled the images into a single pdf file: https://drive.google.com/file/d/0B7eG5PHUDcmZX1FnOHRhSU9ubUU/edit?usp=sharing, and filtered the color to black/white to improve printing.
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10 days of driving to see the sights in the continental US.
Solving a 50-city touring problem of the type described in Discovery News is easy these days. If we are presented with the distance, or time, to travel between each pair of locations, then we have a purely mathematical problem: find the tour around the points that is the shortest among all of ...
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Hoffice Turns Your Apartment Into A Free—And Incredibly Productive—Coworking Space

I had this same idea a couple years ago so happy to see it happening.

Working at home has obvious perks, but typing in bed in your pajamas isn't necessarily quite as productive as sitting in an office. A new Swedish project aims to help freelancers find it easier to get things done, by transforming apartments and homes into temporary coworking spaces.

#coworking  
Tired of not seeing another face all day when you work at home? Then invite some company.
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Away from home reading: best "What is Roleplaying" section ever. 
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Spring in Colorado often means sweeping snow off my satellite dish. Snow doesn't usually disrupt the satellite signal in the winter unless there is a lot of it, but wet spring snow can disrupt TV reception even in small amounts.

The tree in the front is a crabapple of some kind, and the one further away is a weeping willow.

I took this picture with my iPhone today from the top of a ladder, and edited it with Snapseed.

#snapseed
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54 years ago today Yuri Gagarin was the first human to leave Earth. I'm 55, and thank him.

(Art by Detlev Van Ravenswaay).
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Graph Theory for Kids
 
Here is the kit for my recent graph theory project:

Math for eight-year-olds: graph theory for kids! 
http://jdh.hamkins.org/math-for-eight-year-olds/

Print out to double-sided, and then fold each page in half. Place the folded pages one after the other (not nested) inside the cover page.
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http://www.reprap-windturbine.com/index.php?id=16 includes printer files for the Sterling engine.
Liz Quilty originally shared:
 
Nice!
Each and every day, I am blown away in yet another way by all of the new innovations that have quickly been coming into existence within the 3D printing space.
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The idea of using the massive computing capacity we have, to come up with tests which may better cover the possible search space is a great idea. But, what I was really impressed with, was the pruning of the randomly generated tests, back down to a minimum failing test. This is such a help.

At the moment, it's not packaged very well, and should likely be run inside a separate environment, because it imports a lot of tools.

But, I think it's got a lot of potential for making testing much more robust.

Hypothesis is a much more advanced version of QuickCheck (Haskell) or ScalaTest (Scala).
 
A test system that will fuzz the incoming data to test variations.  Looks worth checking out.
An example¶. Suppose we've written a run length encoding system and we want to test it out. We have the following code which I took straight from the Rosetta Code wiki (OK, I removed some commented out code and fixed the formatting, but there are no functional modifications): ...
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Have them in circles
2,909 people
Roman Potov's profile photo
Joao Ricardo Nickenig Vissoci's profile photo
yasin sarı's profile photo
Flower Boy Next The Door - Korean Drama TV's profile photo
rubikasi superayas (dotcom)'s profile photo
Webku Berbagi's profile photo
Osvaldo Nathaniel's profile photo
Alice Anderson's profile photo
Alejandrina Lash's profile photo
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