Purpose One of the main theories regarding the relationship between government expenditure and gross domestic product (GDP) is Wagner's law. This law was developed in the late-19th century by Adolph Wagner (1835-1917), a prominent German economist, and depicts that an increase in government...

We evaluate the impact of government mandated proof of vaccination requirements for access to public venues and non-essential businesses on COVID-19 vaccine uptake. We find that the announcement of a mandate is associated with a rapid and significant surge in new vaccinations (more than 60%...

The Bitcoin (BTC) market presents itself as a new unique medium currency, and it is often hailed as the "currency of the future". Simulating the BTC market in the price discovery process presents a unique set of market mechanics. The supply of BTC is determined by the number of miners and...