Hicks Z R, Matthews M E, Norback J P
J Am Diet Assoc. 1986 Sep;86(9):1182-8.
Three scenarios, developed from typical situations in the foodservice, were stimulated on the Sperry 1100/80 computer to illustrate how the decision support system assisted dietitians. The scenarios included an analysis of price changes and discounts from a potential vendor; menu planning and pricing for a holiday dinner for 800 to 900 employees; and a comparison of costs between 1 day of meals for a patient on a general and a diabetic diet. In the analysis of price discounts, 1.5 hours were required for finding an acceptable solution using the decision support system. Prices were changed on 349 ingredients; then matrix multiplication within the decision support system resulted in recosting all menu items with those ingredients and provided new prices for cost per meals. Eight new ingredients, 13 menu items, and 2 menu plans for two different holiday meals were entered into the computer; precise amounts and prices for menu items and meals were obtained in 1 hour. Twelve hours was the minimum time estimated for finding a solution by hand calculations. Time to calculate costs of 27 different menu items for one patient day was estimated to be 9 hours manually. With the decision support system, cost comparisons were available in 1 hour. Both the usefulness and the potential of the decision support system were demonstrated.
从食品服务行业的典型情况中开发出三种场景，在斯佩里1100/80计算机上进行模拟，以说明决策支持系统如何协助营养师。这些场景包括对潜在供应商的价格变化和折扣进行分析；为800至900名员工的节日晚宴进行菜单规划和定价；以及比较普通饮食患者和糖尿病饮食患者一天膳食的成本。在价格折扣分析中，使用决策支持系统找到可接受的解决方案需要1.5小时。对349种食材的价格进行了更改；然后决策支持系统内的矩阵乘法运算对所有含有这些食材的菜单项重新计算成本，并给出每餐成本的新价格。将8种新食材、13个菜单项以及两种不同节日膳食的2种菜单计划输入计算机；1小时内就获得了菜单项和膳食的确切数量和价格。通过手工计算估计找到解决方案的最短时间为12小时。手动计算一名患者一天27种不同菜单项的成本估计需要9小时。使用决策支持系统，1小时内即可进行成本比较。展示了决策支持系统的实用性和潜力。
