Tweet

Ryan Hill

11 Oct, 4 tweets, 2 min read

Here’s a fun entry for #EconWoodworking. I made these wooden counting tiles a few weeks ago using a CNC router. Fun way to teach math!

Some behind the scenes. You can program any shape or design into the machine and it helps guide the cuts

More detail:

The machine is called the Shaper Origin. It’s pretty easy to learn if you are just starting out!

• • •

Missing some Tweet in this thread? You can try to force a refresh

This Thread may be Removed Anytime!

Twitter may remove this content at anytime! Save it as PDF for later use!

More from @RyanReedHill

Ryan Hill

@RyanReedHill

27 Jun

Ok this thread is for all you Stata junkies out there that use reshape regularly.

Sometimes I have to do “unbalanced” reshapes, which is a task that is super inefficient using the standard reshape command.

So here's a hack you might find useful!
1/

I often reshape panels from wide to long that have many missings.
E.g. I have a panel of scientists with a wide list of pubmed identifiers for their papers. (In this case, these came from space-delimited strings that I split into a wide set of variables with the stub “pmids")
2/

I call this panel “unbalanced” because the distribution of publications for the sample of scientists is very skewed. 37% of them have only one published paper, but 0.15% have more than 200, a handful have more than 1000 papers. Mean is 7, median is 2.
3/

Read 19 tweets

Ryan Hill

@RyanReedHill

10 Nov 19

Hey academics on Twitter:

Have you ever been scooped?
Do you worry about getting scooped?

My job market paper estimates the consequences of getting scooped in science using cool data from structural biology.
Let’s do a thread!

@carolyn_sms

The paper is called:
Scooped! Estimating Rewards for Priority in Science

It’s co-authored with my awesome classmate @carolyn_sms , who is a fantastic collaborator. Look for her on the econ market next year!

Paper link: economics.mit.edu/files/18001

Economists have long characterized the reward system for innovation (patents, academic papers, etc.) as winner-take-all races. This extreme allocation of credit affects how we think about R&D investment, innovation strategy, and the pace and direction of science.

Read 20 tweets

Support us! We are indie developers!

This site is made by just two indie developers on a laptop doing marketing, support and development! Read more about the story.

Become a Premium Member ($3/month or $30/year) and get exclusive features!

Become Premium

Too expensive? Make a small donation by buying us coffee ($5) or help with server cost ($10)

Donate via Paypal Become our Patreon

Thank you for your support!

Share this page!

Ryan Hill

Try unrolling a thread yourself!

More from @RyanReedHill

Ryan Hill

Ryan Hill

Did Thread Reader help you today?

Like this author's thread?