{ "item_title" : "The Analysis of Modeling Aircraft Noise with the Nord2000 Noise Model", "item_author" : [" Eric Boeker", "Joyce Rosenbaum", "Paul Gerbi "], "item_description" : "This report provides comparisons between AEDT/INM and the Nord 2000 Noise Models for the following parameters: ground type, simple terrain (downward slope, upward slope, hill), temperature and humidity, temperature gradients (positive and negative), turbulence, mixed ground types, hill terrain with mixed ground types, hill terrain with mixed ground types and turbulence, and hill terrain with a positive temperature gradient. The purpose of these comparisons is to highlight portions of the Nord2000 noise propagation methodology that could be considered and adapted for inclusion in AEDT development.", "item_img_path" : "https://covers4.booksamillion.com/covers/bam/1/49/499/717/1494997177_b.jpg", "price_data" : { "retail_price" : "18.99", "online_price" : "18.99", "our_price" : "18.99", "club_price" : "18.99", "savings_pct" : "0", "savings_amt" : "0.00", "club_savings_pct" : "0", "club_savings_amt" : "0.00", "discount_pct" : "10", "store_price" : "" } }

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