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A discrete cosine transform (DCT) expresses a finite sequence of data points in terms of a sum of cosine functions oscillating at different frequencies.The DCT, first proposed by Nasir Ahmed in 1972, is a widely used transformation technique in signal processing and data compression.
The modified discrete cosine transform (MDCT) is a transform based on the type-IV discrete cosine transform (DCT-IV), with the additional property of being lapped: it is designed to be performed on consecutive blocks of a larger dataset, where subsequent blocks are overlapped so that the last half of one block coincides with the first half of the next block.
The Aviation Industry Computer-Based Training Committee (AICC) was an international association of technology-based training professionals that existed from 1988 to 2014. The AICC developed guidelines for aviation industry in the development, delivery, and evaluation of CBT , WBT , and related training technologies.
The form of DCT used in signal compression applications is sometimes referred to as DCT-2 in the context of a family of discrete cosine transforms, [19] or as DCT-II. More recent standards have used integer-based transforms that have similar properties to the DCT but are explicitly based on integer processing rather than being defined by ...
On a real project, the actual activities that will be done in the context of a process must be shown to support the objectives. These activities are defined by the project planners as part of the Planning process. This objective-based nature of DO-178C allows a great deal of flexibility in regard to following different styles of software life ...
Advanced Supersonic Transport (AST) model in wind tunnel. The aircraft design process is a loosely defined method used to balance many competing and demanding requirements to produce an aircraft that is strong, lightweight, economical and can carry an adequate payload while being sufficiently reliable to safely fly for the design life of the aircraft.
The project generally considers any article related to aviation to be within its scope. Our primary work is concentrated in a number of broad areas: Aviation concepts (e.g., stall, mach) Aviation technologies not part of an airplane (e.g., airport surveillance radar) Articles about aircraft types (e.g., airliner, interceptor aircraft, helicopter)
Aerospace engineering – is the primary field of engineering concerned with the development of aircraft and spacecraft. [13] It has two major and overlapping branches: Aeronautical engineering and Astronautical Engineering. Avionics engineering is similar, but deals with the electronics side of aerospace engineering.