We present a new algorithm for the 2D Radix-2 Sliding Window Fourier Transform (SWFT). Our algorithm avoids repeating calculations in overlappingwindows by using a tree representation of the Cooley-Tukey Fast Fourier Transform (FFT). For an N0 × N1 array and n0 = 2m0 × n1 = 2m1 windows, our algorithm takes O(N0N1n0n1) operations, which is faster than taking a 2D FFT in each window. We provide a...

customer service level is of prime importance in today competitive world and has various dimensions with delivery quality being one of the most important ones. delivery quality has several parameters such as deliver time window options, time window size, etc. in this paper we focus on one of these parameters, namely time window setting. it has a direct impact upon customer satisfaction and busi...

in islamic republic of iran, the heating and cooling of buildings account for approximately 40% of total energy use. from the entire energy loss taking place in a building, one third of that energy loss occurs through the windows. many of today’s existing buildings are not energy efficient, and consume more energy than is needed in order to make the working and living environments comfortable. ...

original article     the aim of this study was to design and build a software for noise propagation prediction (indoor and from indoor to outdoor spaces) which is being commonly used in industry.  in this regard, firstly a mathematical complex model was created based on existing relationships about noise propagation in indoor spaces and transmission through the walls and propagation in outdoor ...