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Studios and their facilities
Published in Michael Talbot-Smith, Audio Engineer's Reference Book, 2013
Malcolm Nelson, Peter Harris, Larry Goodson, John Howell, Peter Jackson, Geoff Atkins, Yasmin Hashmi, Tim Robinson
Recording studios tend to receive tapes from many sources for continuation of recording, overdubbing or mixing. Any of the current analogue noise-reduction systems, Dolby A, Dolby SR, Telcom or DBX, may be encountered. Fortunately, most systems are produced on a card which will operate in Dolby racking frames. Caution should be exercised in providing adequate ventilation for the frames, particularly as some later cards produce higher temperatures than the frames were designed for. The studio may not own a full range of cards but rely on hiring in for specific sessions.
An adaptive hybrid genetic algorithm for pavement management
Published in International Journal of Pavement Engineering, 2019
João Santos, Adelino Ferreira, Gerardo Flintsch
Crossover is the process by which one or more new individuals are created through the combination of genetic material selected from two or more parents of the source population, to form the members (offspring chromosomes) of a successor population. In the proposed AHGA a Direction-based Crossover (DBX) operator was implemented (Chuang et al.2015). This crossover operator work as follows: once the RS is performed, the N population members are sorted in ascending order according to their fitness, after which the chromosomes are divided into two groups: the leading group (group A: ), which contains the fitter solutions, and the inferior group (group B: ), which, as the name suggests, comprises the worst chromosomes in the current population. The chromosomes belonging to the leading group are then paired with the individual with the homologue ranking position in the inferior group. Next, for each pair of parents a random number in the interval [0, 1] is generated with uniform probability and compared to a pre-determined crossover rate (pc). If the random number is greater than the crossover rate, no crossover is performed and the pair members will undergo mutation. Otherwise, they are guided to generate two new candidate offspring according to the following rules: