September 5, 2015 by Chris on Web Bookmarks

Bookmarks for September 5th

Practical Python for Astronomers — Python4Astronomers 2.0 documentation –
CS for All — cs5book 1 documentation – This book (and course) takes a unique approach to “Intro CS.” In a nutshell, our objective is to provide an introduction to computer science as an intellectually rich and vibrant field rather than focusing exclusively on computer programming. While program
How Jehovah’s Witnesses Are Changing Medicine – The New Yorker – This is the first in a three-part series, “Medicine Without Blood,” about the ways that Jehovah’s Witnesses have changed how doctors think about blood transfusion. Read the second and third installments, “Should Anyone Be Given A Blood Transfusion?” and “T
RawDigger: Raw Image Analyzer | RawDigger –
(Free) Software Building and Packaging For Windows [Win-builds] –
Scientific studies show why everyone should play video games – TechU4ria –

August 31, 2015 by Chris on Web Bookmarks

Bookmarks for August 29th through August 31st

These are my links for August 29th through August 31st:

August 26, 2015 by Chris on Web Bookmarks

These are my links for August 23rd through August 26th:

August 22, 2015 by Chris on Web Bookmarks

August 13, 2015 by Chris on Web Bookmarks

These are my links for August 12th through August 13th:

These are my links for July 20th through July 24th:

Ask HN: Best-architected open-source business applications worth studying? | Hacker News -
Monospaced Programming Fonts with Ligatures | Hacker News -
The language of choice - Propositional logic was discovered by Stoics around 300 B.C., only to be abandoned in later antiquity and rebuilt in the 19th century by George Boole’s successors. One of them, Charles Peirce, saw its significance for what we now call logic circuits, yet that discovery too was forgotten until the 1930s. In the ’50s John McCarthy invented conditional expressions, casting the logic into the form we’ll study here; then in 1986 Randal Bryant repeated one of McCarthy’s constructions with a crucial tweak that made his report “for many years the most cited paper in all of computer science, because it revolutionized the data structures used to represent Boolean functions” (Knuth).1 Let’s explore and code up some of this heritage of millennia, and bring it to bear on a suitable challenge: playing tic-tac-toe.
Then we’ll tackle a task that’s a little more practical: verifying a carry-lookahead adder circuit. Supposedly logic gets used all the time for all kinds of serious work, but for such you’ll have to consult the serious authors; what I can say myself, from working out the code to follow, is that the subject offers a fun playground plus the most primitive form of the pun between meaning and mechanism.

You’re encouraged to read with this article’s code cloned and ready