Prospect theory is a very successful descriptive model about decision making under risk during recent several decades, it challenges the expected utility theory to fight, and even can substitute it.
前景理论是近几十年来一个优秀的关于风险下决策的描述性模型，它的出现是对预期效用理论的一个挑战，甚至可以说是对预期效用理论的一个替代。
This paper establishes a user's willing-to-pay model for pricing road based on risk utility function, which is an application of information economics analysis and risk decision theory.
本文根据不确定性条件下的信息经济分析原理，建立了基于风险效用函数的收费道路使用者支付意愿模型。
The utility model is simple in structure and easy in assembly, and with low risk of braking failure and low fabrication cost.
本实用新型结构简单， 安装难度小，制动失效机率较低，制造成本低。
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