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A schematic diagram of the pork cycle. In economics, the term pork cycle, hog cycle, or cattle cycle [1] describes the phenomenon of cyclical fluctuations of supply and prices in livestock markets. It was first observed in 1925 in pig markets in the US by Mordecai Ezekiel and in Europe in 1927 by the German scholar Arthur Hanau . [2]
Feed conversion ratio (FCR) is the ratio of inputs to outputs; it is the inverse of "feed efficiency" which is the ratio of outputs to inputs. [2] FCR is widely used in hog and poultry production, while FE is used more commonly with cattle. [2] Being a ratio the FCR is dimensionless, that is, it is not affected by the units of measurement used ...
The cobweb model has been interpreted as an explanation of fluctuations in various livestock markets, like those documented by Arthur Hanau in German hog markets; see Pork cycle. However, Rosen et al. (1994) proposed an alternative model which showed that because of the three-year life cycle of beef cattle, cattle populations would fluctuate ...
Swine influenza is an infection caused by any of several types of swine influenza viruses. Swine influenza virus (SIV) or swine-origin influenza virus (S-OIV) refers to any strain of the influenza family of viruses that is endemic in pigs. [2] As of 2009, identified SIV strains include influenza C and the subtypes of influenza A known as H1N1 ...
The groundhog (Marmota monax), also known as the woodchuck, is a rodent of the family Sciuridae, belonging to the group of large ground squirrels known as marmots. [2] A lowland creature of North America, it is found through much of the Eastern United States, across Canada and into Alaska. [3]
Instructions per second. Instructions per second (IPS) is a measure of a computer 's processor speed. For complex instruction set computers (CISCs), different instructions take different amounts of time, so the value measured depends on the instruction mix; even for comparing processors in the same family the IPS measurement can be problematic.
The thorium fuel cycle is a nuclear fuel cycle that uses an isotope of thorium, 232. Th. , as the fertile material. In the reactor, 232. Th. is transmuted into the fissile artificial uranium isotope 233. U. which is the nuclear fuel. Unlike natural uranium, natural thorium contains only trace amounts of fissile material (such as 231.
Carbon accounting. Depiction of carbon accounting using the WRI-Greenhouse Gas Protocol classification of emissions into three categories: Scope 1, 2, and 3. Additional downstream Scope 3 sources are shown on WRI’s website. [1][2] Carbon accounting (or greenhouse gas accounting) is a framework of methods to measure and track how much ...