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In mathematics, the discrete Fourier transform (DFT) converts a finite sequence of equally-spaced samples of a function into a same-length sequence of equally-spaced samples of the discrete-time Fourier transform (DTFT), which is a complex-valued function of frequency. The interval at which the DTFT is sampled is the reciprocal of the duration ...
Density functional theory (DFT) is a computational quantum mechanical modelling method used in physics, chemistry and materials science to investigate the electronic structure (or nuclear structure) (principally the ground state) of many-body systems, in particular atoms, molecules, and the condensed phases.
Both transforms are invertible. The inverse DTFT reconstructs the original sampled data sequence, while the inverse DFT produces a periodic summation of the original sequence. The Fast Fourier Transform (FFT) is an algorithm for computing one cycle of the DFT, and its inverse produces one cycle of the inverse DFT.
DFT may refer to: Businesses and organisations. Department for Transport, United Kingdom; Digital Film Technology, maker of the Spirit DataCine film digitising scanner;
The central tenet to DFT is the primacy of customer demand in daily execution of the operation. According to Aberdeen Group, "Demand driven manufacturing involves a synchronized, closed loop between customer orders, production scheduling, and manufacturing execution; all while simultaneously coordinating the flow of materials across the supply chain."
The Department for Transport (DfT) is a ministerial department of the Government of the United Kingdom. It is responsible for the English transport network and a limited number of transport matters in Scotland, Wales, and Northern Ireland that have not been devolved .
DfT category F2: History; Original company: Hull and Selby Railway: Pre-grouping: North Eastern Railway: Post-grouping: London and North Eastern Railway: Key dates; 1 July 1840 () Opened as Bromfleet: January 1851: Renamed Broomfleet: October 1861: Closed to regular traffic: November 1872: Reopened for regular traffic: Passengers; 2019/20: 864: ...
Hutton Cranswick railway station serves the village of Hutton Cranswick in the East Riding of Yorkshire, England.It is located on the Yorkshire Coast Line, 16 + 1 ⁄ 4 miles (26 km) north of Hull and is operated by Northern who provide all passenger train services.