uncleflo
Registered since September 28th, 2017
Has a total of 4281 bookmarks.
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python - How do I fit a sine curve to my data with pylab and numpy? - Stack Overflow
Saved by uncleflo on May 15th, 2021.
I am trying to show that economies follow a relatively sinusoidal growth pattern. I am building a python simulation to show that even when we let some degree of randomness take hold, we can still produce something relatively sinusoidal. I am happy with the data I'm producing, but now I'd like to find some way to get a sine graph that pretty closely matches the data. I know you can do polynomial fit, but can you do sine fit? You can use the least-square optimization function in scipy to fit any arbitrary function to another. In case of fitting a sin function, the 3 parameters to fit are the offset ('a'), amplitude ('b') and the phase ('c').
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Diceware passwords now need six random words to thwart hackers
Saved by uncleflo on October 17th, 2016.
One of the best ways to create a random yet memorable password is to use "Diceware." This involves literally rolling dice and matching the resulting numbers to a list containing 7,776 English words, each identified by a five-digit number. Five Diceware words has long been thought to provide enough security for the average user.
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The Diceware Passphrase Home Page
Saved by uncleflo on October 17th, 2016.
This page offers a better way to create a strong, yet easy to remember passphrase for use with encryption and security programs. Weak passwords and passphrases are one of the most common flaws in computer security. Take a few minutes and learn how to do it right. The information presented here can be used by anyone. No background in cryptography or mathematics is required. Just follow the simple steps below. If you'd like to know even more about passphrases, see the Frequently Asked Questions (FAQ), and please checkout the Diceware Security Blog, for commentary on the latest developments in computer security and shared secret authentication.
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http://www.cigital.com/papers/download/developer_gambling.php
Saved by uncleflo on February 8th, 2014.
by Brad Arkin, Frank Hill, Scott Marks, Matt Schmid and Thomas John Walls. Originally appeared on Developer.com; September 1999. Poker is a card game that many people around the world enjoy. Poker is played at kitchen tables, in casinos, and cardrooms -- and more recently, the Web. A few of us here at Reliable Software Technologies play poker. Since many of us spend a good amount of our days online, it was only a matter of time before some of us put the two interests together. This is the story of how our interest in online poker and software security mixed to create a spectacular security exploit.
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How to create a random string using PHP? - Stack Overflow
Saved by uncleflo on February 4th, 2013.
The basic algorithm is to generate <length> times a random number between 0 and <number of characters> − 1 we use as index to pick a character from our set and concatenate those characters. The 0 and <number of characters> − 1 bounds represent the bounds of the $charset string as the first character is addressed with $charset[0] and the last with $charset[count($charset) - 1].
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Linux Commando: Create File of a Given Size ... with random contents
Saved by uncleflo on November 23rd, 2012.
A while back, I wrote about how to create a zero-filled file of any arbitrary size. This is part 2 where I share how to create a file of random contents (not just zeroes). Recently, I ran into a situation where a zero-filled file is insufficient. I needed to create a log file of size 2 MB in order to be zipped up and copied to another server.
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