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Extension of Blind Number and its Application to Calculation of Water Environmental Capacity in Western Chaohu Lake, China

机译：盲数的扩展及其在巢湖西部水环境容量计算中的应用

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摘要

Aiming at the shortage of traditional blind number theory being helpless for fuzzy information,an extended blind number,i.e.universal blind number,was proposed by replacing grey interval values in the existing blind number with trapezoidal fuzzy numbers.On the basis of defining the parameters of water environmental system as universal blind numbers,a blind model with universal blind parameters was established for the calculation of water environmental capacity (WEC) in lake.According to the model,not only the possible values of WEC,in the form of fuzzy numbers,but its corresponding faith degree can be determined as well.As a case,the uncertain model established above was utilized to calculate the WEC of the Western Chaohu Lake,and finally obtained the expected value of WEC for CODMn,i.e.164.42 t/d.Study results show that it is feasible and reliable to extend the present blind number theory to fuzzy environment by using trapezoidal fuzzy number.
机译：针对传统盲数理论对模糊信息无能为力的不足，提出了用梯形模糊数代替现有盲数中的灰色区间值的扩展盲数，即通用盲数。以水环境系统为通用盲数，建立了一个具有通用盲参数的盲模型，用于计算湖泊水环境容量（WEC）。根据该模型，不仅WEC的可能值为模糊数，例如，利用上述建立的不确定性模型来计算西巢湖的WEC，最终得出CODMn的WEC期望值，即164.42 t / d。结果表明，利用梯形模糊数将现有的盲数理论推广到模糊环境是可行和可靠的。

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