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David Joyner
Works at USNA
Attended Georgia Institute of Technology
Lives in arnold, md
8,310 followers|538,754 views
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David Joyner

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Very easy mate-in-2 due to Sam Loyd, thanks to futilitycloset.com:
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David Joyner

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Crazy wild math fact, care of the futilitycloset.com, below.

Here is Sagemath code:

a = 999999999999999999999998999999999999999999999999
RR = RealField(prec=500,rnd="RNDU")
L = [fibonacci(n)*1.0*10^(-n*24-24) for n in range(15)]
RR(sum(L)*a)

which outputs 

1.000000000000000000000000000000000000000000000...
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Saw this first on slashdot. Quoting:

"...after just four weeks on a high-fat or a high-sugar diet, the performance of mice on various tests of mental and physical function began to drop, compared to animals on a normal diet. One of the most pronounced changes was in what researchers call cognitive flexibility."
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Cognitive is not the only determination of Water maze testing score. Fat animals usually earn bad scores due to lower physical performance. Four weeks high fat or high surge diet should result in fat animals.
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David Joyner

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Elsevier cares about scientific research exactly as much as they their ability to turn it into green folding paper for their wallets.
Statement against Elsevier's sharing policy. Organizations around the world denounce Elsevier's new policy that impedes open access and sharing. On April 30, 2015, Elsevier announced a new sharing and hosting policy for Elsevier journal articles. This policy represents a significant obstacle to ...
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David Joyner

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Making of "The Incompatibles"
This post is a discussion of the making of the video https://vimeo.com/wdj/theincompatibles The video "The Incompatibles" is the first project from the Annapolis Filmmaking Group , a meetup.com group founded by James Angiola . We meet once or twice a month ...
This post is a discussion of the making of the video https://vimeo.com/wdj/theincompatibles The video "The Incompatibles" is the first project from the Annapolis Filmmaking Group, a meetup.com group founded by James Angiola. ...
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David Joyner

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Notes on Randy Baker's Playwriting II class
Randy Baker taught a playwriting class recently at the Writer's Center in Bethesda MD. He's a great teacher, the class was excellent, and here are some very rough notes I took during the class. A playwright is a craftsman or builder of plays. The learning i...
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David Joyner

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Just saw this one-liner: Time flies like an arrow; fruit flies like a banana.
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That's a really old one that came up a lot back in the heyday of artifical intelligence work. How could a software program parse that?
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I'm no expert but decided to write a very basic post on formatting anyway, mostly for my own benefit.
For beginners only.
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Script formatting basics
This is not a post on story structure or movie analysis. This is simply an introduction to the basics of movie script formatting, intended strictly for the beginner. To be more precise, we focus on feature length narrative spec scripts. In other words, a mo...
This is not a post on story structure or movie analysis. This is simply an introduction to the basics of movie script formatting, intended strictly for the beginner. To be more precise, we focus on feature length narrative sp...
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It's up now.
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David Joyner

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On the making of a silly comedy video (3 minutes).
This post is a discussion of the making of the video The Incompatibles, an AFG project from wdj on Vimeo. The video "The Incompatibles" is the first project from the Annapolis Filmmaking Group, a meetup.com group founded by ...
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Yet another study on why the statistics gathered from student opinion forms are biased.
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Notes on Randy Baker's Playwriting II class
A playwright is a craftsman or builder of plays. The learning is in the doing. Many well-known playwrights actually dropped out of school. Playwrights learn by the doing. We will structure the class by approaching it from the direction of Aristotle. He wrot...
A playwright is a craftsman or builder of plays. The learning is in the doing. Many well-known playwrights actually dropped out of school. Playwrights learn by the doing. We will structure the class by approaching it from the...
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Education
  • Georgia Institute of Technology
    math
  • University of Maryland, College Park
    math
Basic Information
Gender
Male
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Tagline
math, writing, tech, edu, ...
Introduction
Enjoy tinkering with mathematics, writing, Sage (www.sagemath.org), video, chess, and photography. Interested in math education-related and open-source software issues.
Bragging rights
have managed to stay off facebook
Work
Occupation
math prof
Employment
  • USNA
    math prof, present
Places
Map of the places this user has livedMap of the places this user has livedMap of the places this user has lived
Currently
arnold, md
Previously
mountain view, ca - kent, wa - decatur, ga - princeton, nj - san diego, ca
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I have used All for the Pet for years and never once had rude service. The store doesn't even open until 9am and Lisa often comes in early to help out people who want to drop off their pet before going to work. I think she does a good job with my pets and her prices are reasonable.
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reviewed a year ago
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