Terraria (/tərəriːə/) is a 2D action-adventure sandbox video game developed by Re-Logic. The game was initially released for Microsoft Windows on May 16, 2011. It was later released for Xbox 360, PlayStation 3, PlayStation Vita, iOS, and Android in 2013, for Windows Phone, PlayStation 4, and Xbox One in 2014, for OS X, Linux, and Nintendo 3DS in 2015, and for Wii U in 2016.
The game features exploration, crafting, construction, and combat with a variety of creatures in a randomly generated 2D world. The game received positive reviews from critics, and over 12 million copies of Terraria were sold...
A true duopoly (from Greek duo δύο (two) + polein πωλεῖν (to sell)) is a specific type of oligopoly where only two producers exist in one market. In reality, this definition is generally used where only two firms have dominant control over a market. In the field of industrial organization, it is the most commonly studied form of oligopoly due to its simplicity.
== Duopoly models in economics ==
There are two principal duopoly models, Cournot duopoly and Bertrand duopoly:
The Cournot model, which shows that two firms assume each other's output and treat this as a fixed amount, and produce in their...
In computer networking, IP over Avian Carriers (IPoAC) is a humorously intended proposal to carry Internet Protocol (IP) traffic by birds such as homing pigeons. IP over Avian Carriers was initially described in RFC 1149, a Request for Comments (RFC) issued by the Internet Engineering Task Force (IETF) written by D. Waitzman and released on April 1, 1990. It is one of several April Fools' Day RFCs.
Waitzman described an improvement of his protocol in RFC 2549, IP over Avian Carriers with Quality of Service (1 April 1999). Later, in RFC 6214 released on 1 April 2011, and 13 years after the i...
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