kwaldman
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5 years ago
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on: How far does sound travel in the ocean?
Thanks for the link. I traveled on the Cory Choeust multiple times during the late 80s, though not on Heard island test. Very interesting working on SONAR in the 80s, both on surface ships and subs. Riding alone in the conning tower of an SSN in Exuma sound was fun. And saw a full rainbow in north Atlantic
kwaldman
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5 years ago
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on: Show HN: Antimander – Optimize Congressional Districts with Genetic Algorithms
Seen similar benefits - many years ago applied GA's to schedule technicians to fix computers (based on location, part availability, skill set, etc) and also for manufacturing production lines (labor rules, parts, color changeovers, demand, margin)
kwaldman
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6 years ago
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on: History of 1918 Flu Pandemic
According to "The Great Influenza" by John Barry young people died due to cytokine storms. Essentially young people have a vigorous immune system that gave an aggressive attack. 1918 flu was unique in that the deaths was not just the very young and the very old (a U shaped distribution) but rather a W shaped distribution with the middle point being 20-40 age group
Also in the book - the "spanish" flu was called that since Spain was the only place with a free press at the time (e.g., US press was not free at the time) + massing of young men in US in camps - like Ft Devens. Flu traveled from overcrowded camp to camp and then jumped to local populations along rail lines (and then overseas as troops were shipped out)
He describes it well, though would make a great visual as it moves from Boston to Chicago to NYC back into Providence/Brockton (which are just south of Boston). Transmission along rail (and shipping) lines.
kwaldman
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7 years ago
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on: Tell HN: Tim May, Author of “The Crypto Anarchist Manifesto”, Has Died
RIP Tim. I remember reading his work (usenet) back in the late 80's/early nineties - he once told me of his early days at Intel and later invited me to join the cypherpunks list a very long time ago. Tempus fugit.
kwaldman
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7 years ago
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on: Insider Accounts of Computing and Life at BBN: A sixty-year report (2011) [pdf]
I worked at bbn for 10 years. Wonderful culture. I got to learn hardware, software and systems as a jnr engineer working across the world. Amazing people who developed technology from first principles. Thanks for sharing, great memories.
kwaldman
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7 years ago
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on: Ask HN: What is some advice that has made your life better?
Low carb,high fat, mod protein diet
Stoicism
Memento Mori
kwaldman
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8 years ago
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on: Ask HN: How do you reduce unsolicited phone calls?
Go to web page and configure max security including nomorobo. I was getting a great deal of spoofed calls. Seems to have worked
kwaldman
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8 years ago
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on: Ask HN: How do you reduce unsolicited phone calls?
Many options including blocking anyone not in your contact list. Also include spammer blocking service nomorobo. Comcast also allows nomorobo service for free.
kwaldman
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8 years ago
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on: Ask HN: How do you reduce unsolicited phone calls?
Move your phone to ooma.com. service is fast and easy.
My phone bill dropped compared to comcast and I have eliminated spam calls.
kwaldman
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8 years ago
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on: Duolingo Suddenly Has Over Twice as Much Language Learning Material
The new version is very good for Chinese. It is giving me much more complex sentence structure.
kwaldman
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8 years ago
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on: Ask HN: Any tinnitus success stories?
I have had it for ten years. Eventually you don't hear it until you think about it. Mine is very loud at the moment. Just another sign of aging. Nature's own memento mori.
kwaldman
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8 years ago
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on: Ask HN: Sell my startup for $14M because I can't raise $2M?
kwaldman
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9 years ago
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on: My Family’s Slave
