Now I only need a MacBook (1.3 GHz dual-core i5) to do all my work anywhere, thanks to a powerful workstation provided by the university. Yet the workstation is based on Windows 10 and sitting behind the university VPN. I don't want to use Remote Desktop every time I need to do some coding, so I decided to make it so I can code remotely on the workstation but from the lovely VSCode on my little MacBook.
Beta is a measure of market risk. This post tries to explain the unlevered and levered betas.
The Wharton Research Data Services (WRDS) allows one to submit and execute SAS programs to the cloud. WRDS has an instruction on accessing WRDS data from SAS on our own PCs. Generally, you should use:
%let wrds=wrds-cloud.wharton.upenn.edu 4016;
options comamid=TCP remote=WRDS;
signon username=_prompt_;
rsubmit;
/* Code for remote execution goes here. */
endrsubmit;
signoff;
However, if you want to save the effort of entering username and password every time, you'll need to encode your password. Concluding the two articles, basically you just need to follow the steps below.
An accumulator is a financial derivative that is sometimes known as "I kill you later". This post attempts to explain how it is structured and price it via Monte Carlo simulations in Python.
Among many reasons why people find it hard to use cryptocurrency there's a simple one -- memorising the private key is too hard. So, people invented brain wallet, which turns a string of words into a private key and thus wallet.
It's genius in that now a user needs only to memorise whatever he or she used to create the wallet. You can turn your name, phone number, DoB, favourite quote, lover's home address, ..., literally anything into a cryptocurrency wallet. However, this also means that if someone else successfully guessed the passphrase you used, they can sweep all the coins you have!
This post is just another piece of my serious nonsense. All of a sudden, I wanted to know how many Bitcoins I could have mined since 2012? This is because I’ve known Bitcoin since its existence in 2009, but have never really put any effort in mining. Instead, I was fascinated by the idea of using distributed (volunteer) computing to solve scientific problems. For example, BOINC and related projects like World Community Grid are using the computing power donated from around the world to find effective treatments for cancer and HIV/AIDS, low-cost water filtration systems and new materials for capturing solar energy efficiently, etc. I was one of the many volunteers for a long time, even before the genesis block of Bitcoin.
An interesting question is, what if I didn’t donate my computers to volunteer computing, but used them in Bitcoin instead? How many Bitcoins I could have mined? To solve this question, I started from looking at my contribution history of the World Community Grid (it’s awesome that the full history is available).