Evolution, Faith and Modernity

Evolution, Faith and Modernity

Tonight, I just finished Francis Collins’ book “The Language of God” where he lays out the basic facts of genetics and the human genome, denounces Creationism and rejects Intelligent Design theory, rebukes Richard Dawkins, and generally sets a tone for reasonableness between Christians and scientists. This is a lot of disjoint topics, and while he […]

Amana 7200TW Door Latch Replacement

Amana 7200TW Door Latch Replacement

Quick post, just to help others who might find themselves in a similar situation regarding a front-end loader washer with a door latch that doesn’t close Big trouble . . . door latch broke on our amana front end loader. First thing I do when I need to fix something is look for ownership so […]

Endurance and Altitude for Propeller-driven Aircraft

Endurance and Altitude for Propeller-driven Aircraft

Lower altitude = higher endurance? At first glance this didn’t make sense to me. Air Force pilots will be the first to tell you that you don’t hug the earth en route to maximize your time on station, it is harder slogging in thicker air. At higher altitudes you have lower air pressure and colder […]

Shellshock: Bashing Bash for Fun and Profit

Shellshock: Bashing Bash for Fun and Profit

The latest fundamental computer security vulnerability, termed Shellshock, was discovered by a vulnerability researcher Stephane Chazelas (a linux shell expert living in the UK) which allows for arbitrary code execution on linux or mac computers through creating a custom environment variable. If you haven’t already, you need to patch your system(s) and you might be […]

Playing with Matched Filters

Playing with Matched Filters

During my time on the red team, we continually discussed the role of matched filters in everything from GPS to fire control radars. While I’m having a blast at DARPA where I work in cyber, I wanted to review an old topic and put MATLAB’s phased array toolbox to the test. (Yes, radar friends this […]

One Time Pad Cryptography

One Time Pad Cryptography

This was much harder than it should have been. While this is the certainly the most trivial post on crypto-math on the webs, I wanted to share my MATLAB xor code in the hope that I save someone else’s time. It is a basic property of cryptography that a one time pad must be used […]

Cryptography

Cryptography

We are swimming in a sea of information. Without encryption this whole operation would be a very public event. Encryption enables our communications to be anonymous or secure and makes e-commerce and private communications possible. Because of this, I registered for Dan Boneth’s cryptography course. At this point, I’ve only watched one lecture, but I […]

Review: Boys Should Be Boys: 7 Secrets to Raising Healthy Sons

Review: Boys Should Be Boys: 7 Secrets to Raising Healthy Sons

From a one-star review on Amazon: The content was obvious and the tone was judgmental. The complete lack of nuance is painful. Apparently receiving an MD over 25 years ago makes this Dr. Laura-style author an expert in child psychology? Let’s leave the psychology topics to those professionally trained in that discipline. I’ve always enjoyed […]

Gradient Descent

Gradient Descent

[mathjax] It has been awhile since I’ve studied optimization, but gradient descent is always good to brush up on. Most optimization involves derivatives. Often known as the method of steepest descent, gradient descent works by taking steps proportional to the negative of the gradient of the function at the current point. Mathematically, gradient descent is […]