{ "item_title" : "Design Principles and Usability", "item_author" : [" Sudantha Gunawardena "], "item_description" : "Script from the year 2010 in the subject Computer Science - General, grade: A+, language: English, abstract: Design principles and guidelines According to Pop, P(2001, p.13)defines that design principles is 'high level' recommendations based on well established knowledge about human behavior. Ryan(c. 2009) clarify that many of these design principles has been concerned in design of computer interfaces like Microsoft Windows and Mac operation system these guide lines will make program interfaces easier to use but some of these recommendations may not relevant to web applications. According to Spring (2004) highlights that there are various set of design guidelines has been introduced by various people", "item_img_path" : "https://covers2.booksamillion.com/covers/bam/3/64/092/034/3640920341_b.jpg", "price_data" : { "retail_price" : "39.50", "online_price" : "39.50", "our_price" : "39.50", "club_price" : "39.50", "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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