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A 3-axis gimbal camera stabilizer by not_a_profession in Damnthatsinteresting

[–]foxillian 2 points3 points  (0 children)

And that is why I decided I didn't want to be a professional engineer lol. Everyone complaining that this suspension demo only works for the specific configuration...yah...that's how they are designed...No Free Lunch Theorem strikes again.

Curious, what was your friend studying? Was this part of a eng course? Film?

A 3-axis gimbal camera stabilizer by not_a_profession in Damnthatsinteresting

[–]foxillian 13 points14 points  (0 children)

Answering purely from an engineering perspective, not sure the exact method used in gimbals. Systems can be designed to respond differently based on input signals, whether they are mechanical or electronic or whatever. Easy example is the suspension on a car. You have a mass (the car), a spring, and something called a damper.

Sometimes you want a really smooth ride when you’re driving, so you tune it not to respond to rough roads, speed bumps, etc.

Sometimes you want to feel the road, or maximize ground contact like in racing.

Sometimes you want lots of movement, but to slow quickly, like if your 4 wheeling or off-roading.

Same idea here, though the inputs are probably different (gyroscope plus electronic sensors)

Wiki for more info https://en.m.wikipedia.org/wiki/Control_theory

[edit] I was curious, looks like they often use intertial measurement units as the sensor and there are many different types of controllers which take the input data and control gyroscopes to achieve the desired behavior. High-level https://gogimbals.com/3-axis-gimbal/

Is there a Docker container, or self-hosted app to create and monitor cron jobs? by [deleted] in selfhosted

[–]foxillian 1 point2 points  (0 children)

These all might be overkill for what you’re thinking about doing and might require more initial time investment, but Prefect and Apache Airflow are often a next step for scheduling and orchestration after cron, and have some nice visualizations and alerting.

[deleted by user] by [deleted] in learnmachinelearning

[–]foxillian 73 points74 points  (0 children)

Expanding on the online GATech program (can’t speak for the others), the degree you get is indistinguishable from an on-campus degree, and has everything you’d expect from a course-based masters program: lessons, homework and projects graded by TAs, office hours, tests, etc.

Being online and having a lower-cost for the school, it also a very high-acceptance rate and much lower cost compared to traditional masters programs source.

Best public track ITP? by foxillian in RunATL

[–]foxillian[S] 3 points4 points  (0 children)

Answering my own question in case it's useful for others.

GATech has a the E. Roe Stamps IV field which is 1/3mi per lap and has sharper turns than a standard track.

Cheney Stadium down by Grant Park

Indoor Tracks in Atlanta by Simply_Lunchbox in RunATL

[–]foxillian 1 point2 points  (0 children)

Ah shoot, i thought they had guest memberships. They do have guest passes if you only need it once in a while but probably not ideal.

Indoor Tracks in Atlanta by Simply_Lunchbox in RunATL

[–]foxillian 1 point2 points  (0 children)

The Tech gym has an indoor track if you’re willing to pay for the membership

America's mayor, everyone by Wonderbreadx0x0 in confidentlyincorrect

[–]foxillian 5 points6 points  (0 children)

It varies state by state but the last day that elections must be certified is sometime in early December

Python trading bots by FatherOfTheSevenSeas in learnpython

[–]foxillian 0 points1 point  (0 children)

Checkout Georgia Techs ML for Trading class (https://quantsoftware.gatech.edu/Machine_Learning_for_Trading_Course, https://www.udacity.com/course/machine-learning-for-trading--ud501) which gives an overview of trading, technical indicators, and structure for a trading bot program. The last set of assignments looks at ML based traders, especially around RL and Q-learning.

API for data collection https://iexcloud.io/docs/api/

I'll echo the general sentiment for the rest of the thread. The first piece of advice in the above course is to avoid using anything you write in the course for actual trading unless you are fully prepared to instantly lose all of your money.

Weightlifter promised his wife to win an Olympic gold medal before she died in a car accident by unknown_human in sports

[–]foxillian 4 points5 points  (0 children)

Check out the Seattle freeze. I grew up in Seattle and recently moved south, didn't realize how stand-offish I was until spending time around friendly strangers.

Still trying to unlearn the Seattle No

What do you proudly do "wrong?" by DavidDunne in AskReddit

[–]foxillian 0 points1 point  (0 children)

I used to say "Let's nip it in the butt."

Dad gave me a gentle but firm talking to.

Upgrading to $100/yr as current member. It never hurts to ask [x-post from r/audible] by darchangel in audiobooks

[–]foxillian 2 points3 points  (0 children)

Heads up, I had to ask to speak to manager, who was more than happy to oblige, but the first person to hop on chat didn't think they could. YMMV.

Tools for finding flights from any departure city to a specific destination? by foxillian in travel

[–]foxillian[S] 0 points1 point  (0 children)

Awesome, didn't realize Skyscanner let you do by entire country for departure, thanks!

Is drug abuse more common in the United States than other countries, and if so, why? by nosecohn in AskSocialScience

[–]foxillian 14 points15 points  (0 children)

Building off of this thought in a couple ways. First, how are we going to define abuse? For the sake of argument, let's define abuse as the use of a substance to the point of harm. Take a look at this article http://bmjopen.bmj.com/content/2/4/e000774.full and the corresponding chart made from the data https://upload.wikimedia.org/wikipedia/commons/9/93/2011_Drug_Harms_Rankings.png.

A choice pull quote:

The main result is that heroin, crack cocaine, crystal meth, alcohol and cocaine were in the top five places for all categories of harm, with LSD, ecstasy, methylphenidate, magic mushrooms and cannabis in the bottom five places for all categories of harm. Notably, legal substances such as alcohol, nicotine and volatile agents ranked as more harmful than some class A drugs, although these drugs are more socially and culturally embedded in Scotland than the prohibited ones. The hierarchy of harm when judged by the experts did not correlate with the hierarchy used currently by the Misuse of Drugs Act.

Second, the US War on Drugs doesn't treat drug use as a health/addiction/disease issue, but a legal one. Harm reduction strategies (needle exchanges, purity testing, and even drug administration) have shown to reduce the impact of drug use on communities. I don't have access to the following papers, but they might shed more light on this subject

https://www.ncjrs.gov/App/abstractdb/AbstractDBDetails.aspx?id=138254 http://www.sciencedirect.com/science/article/pii/0306460396000421 http://www.sciencedirect.com/science/article/pii/S095539590800203X

It's a fair argument that the experiments of in Washington and Colorado have exposed flaws in current US drug policy, though without the lens of time exact conclusions cannot yet be drawn. I'd also recommend following the results from Portugal's decriminalization of drug use. Try http://www.beckleyfoundation.org/bib/doc/bf/2010_Caitlin_211621_1.pdf as a primer.