A new fuzzy method is developed using triangular/trapezoidal fuzzy numbers for evaluating a group's mean performance, when qualitative grades instead of numerical scores are used for assessing its members' individual performance. Also, a new technique is developed for solving Linear Programming problems with fuzzy coefficients and everyday life applications are presented to illustrate our results.

中文翻译：

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模糊条件下的评估和线性规划

当使用定性等级而不是数字评分来评估其成员的个人绩效时，使用三角/梯形模糊数开发了一种新的模糊方法，用于评估组的平均绩效。此外，还开发了一种新技术来解决具有模糊系数的线性规划问题，并提出了日常生活中的应用以说明我们的结果。