That is mainly because people ' s aspiration levels surge even more than their incomes , coupled with the experience that they quickly get accustomed to advancements in comfort levels 這主要是因為人們的渴望程度甚至比其收入還要洶涌澎湃,另外加上對舒適水平迅速習以為常。
In easterlin ' s word : " as incomes rise , the aspiration level does too , and the effect of this increase in aspirations is to vitiate the expected growth in 用伊斯特林的話來說: “收入增加了,人們的期望值也相應提高了,期望值的提高會抵消收入提高所帶來的預期有所增加的幸福感。 ”
The original multi - objective optimization problem can be converted to a single objective problem using the goal programming scheme , and the nonlinear membership function is applied to embody uncertain and stochastic characteristics of the aspiration levels in the goal programming model 該方法利用目標規劃方法將多目標優化問題轉化為等效的單目標問題,并用模糊集理論中的非線性隸屬函數來體現目標規劃方法中目標函數期望值所具有的模糊性和不確定性。