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[4]: 114 A DataFrame is a 2-dimensional data structure of rows and columns, similar to a spreadsheet, and analogous to a Python dictionary mapping column names (keys) to Series (values), with each Series sharing an index. [4]: 115 DataFrames can be concatenated together or "merged" on columns or indices in a manner similar to joins in SQL.
The Chinese hyperinflation was the extreme inflation that emerged in China during the late 1930s, [1] extended to Taiwan after the Japanese surrender in 1945, and concluded in the early 1950s. [ 2 ]
Time series datasets can also have fewer relationships between data entries in different tables and don't require indefinite storage of entries. [6] The unique properties of time series datasets mean that time series databases can provide significant improvements in storage space and performance over general purpose databases. [ 6 ]
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The hyperinflation drew significant interest, as many of the dramatic and unusual economic behaviors now associated with hyperinflation were first documented systematically: exponential increases in prices and interest rates, redenomination of the currency, consumer flight from cash to hard assets and the rapid expansion of industries that ...
On 5 January 1975, the 12-bit field that had been used for dates in the TOPS-10 operating system for DEC PDP-10 computers overflowed, in a bug known as "DATE75". The field value was calculated by taking the number of years since 1964, multiplying by 12, adding the number of months since January, multiplying by 31, and adding the number of days since the start of the month; putting 2 12 − 1 ...
Hyperinflation in Brazil occurred between the first three months of 1990. The monthly inflation rates between January and March 1990 were 71.9%, 71.7% and 81.3% respectively. [ 1 ] As accepted by the International Monetary Fund (IMF), hyperinflation is defined as a period of time in which the average price level of goods and services rise by ...
Dynamic hyperinflation is a phenomenon that occurs when a new breath begins before the lung has reached the static equilibrium volume. [1] In simpler terms, this means that a new breath starts before the usual amount of air has been breathed out, leading to a build-up of air in the lungs, and causing breathing in and out to take place when the ...