jaydub

Here's to many more joyful moments! Congrats!

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Based on my experience, I like the author's approach since it makes things pretty clear-cut and optimized the storage in the core table (in my experience as well, deletes happen frequently and the soft deletes are rarely touched). In large, row-oriented tables that that storage can add up and even with views/materialized views there's a cost to using/maintaining those as well.

Yeah, I checked it out and wanted to use but a bunch of regular old SQL queries don't work. Please add support for the old fashioned group by syntax! (This will be helpful for getting to a true drop-in replacement!)

my first reaction was, it looks like an HDR effect

Even if he's out as CEO he still will likely wield outsize influence due to his 1) board seat 2) equity stake 3) majority of leadership are presumably his people.

Will be interesting to see who replaces him and whether the company actually changes.

Just to confirm, is this a smart-phone based spectrometer? (Why don't they use that term?)

This CNC also represents what appears to be the best UI in almost any machining tool I've seen. Glad to see good design thinking not just get it done engineering.

I'm no physicist, but I think that while it may be theoretically possible to distribute power wirelessly doing so in practice seems like it will be necessarily dangerous so as to be impractical. To quote a previous comment I made on HN:

To distribute sound over long distances 'wirelessly' you need to make it loud. That typically means cranking up the power. And ultrasound can be harmful at high power [1]. [1] "Occupational exposure to ultrasound in excess of 120 dB may lead to hearing loss. Exposure in excess of 155 dB may produce heating effects that are harmful to the human body..." https://en.wikipedia.org/wiki/Ultrasound

https://news.ycombinator.com/item?id=10352177

Jon here - also worked on Data USA.

Several of the visualizations use data from ACS summary tables and the axis in several of the visualizations reflect the underlying buckets provided by the Census Bureau.

To distribute sound over long distances 'wirelessly' you need to make it loud. That typically means cranking up the power. And ultrasound can be harmful at high power [1].

[1]

"Occupational exposure to ultrasound in excess of 120 dB may lead to hearing loss. Exposure in excess of 155 dB may produce heating effects that are harmful to the human body..."

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

Used Pandas + Matplotlib to generate the charts. Looks at 2013 5-year estimate from ACS PUMS, using all rows where wage > 0 and age > = 16

There was a Media Lab project that did something similar 2 years ago -- and is open source https://github.com/JeremyRubin/Graffiti-codes

This was interesting story from 2014 http://newsoffice.mit.edu/2014/algorithm-recovers-speech-fro...

It's coming hopefully...http://www.netblazr.com/

Interesting that Kleiner Perkins is moving downstream http://www.nytimes.com/2015/06/17/business/dealbook/kleiner-...

Related?

You should consider a geo-ip lookup for an initial location recommendation, even if its not perfect.

If you have the time to watch, I've also found David Blei's talk on the LDA to be very interesting and clear as an introduction

http://videolectures.net/mlss09uk_blei_tm/

So far looks like grbl flashed to Arduino.

What is the budget for your machine? I'm also very interested in CNC and interested to see further progress and part 2.