The following figure illustrates the knitting action of a V-bed hand flat machine and the another figure shows the underside of the cam carriage and the cams forming the tracks that guide the needle butts through the knitting system.
Milankovitch cycles are the collective effect of changes in the Earth 's movements upon its climate, named after Serbian civil engineer and mathematician Milutin MilankoviÄ.
A seasonal pattern exists when a series is influenced by seasonal factors (e.g., the quarter of the year, the month, or day of the week). Seasonality is always of a fixed and known period. Hence, seasonal time series are sometimes called periodic time series. A cyclic pattern exists when data exhibit rises and falls that are not of fixed period. The duration of these fluctuations is usually of at least 2 years.