我国货币政策与产业结构优化升级——基于非线性调控的新视角

随着我国经济全面进入新常态,产业结构不合理的弊端频现,作为宏观经济调控重要手段的货币政策对产业结构优化升级至关重要,然而,货币政策对产业结构的影响在不同经济时期具有非线性效应。基于此,本文采取因子扩展方法和马尔科夫链对经典向量自回归模型进行了改进,检验了改进后各类模型的参数估计性质,并以检验出的最优模型研究了我国不同货币政策类型在不同经济时期对三次产业及产业结构高级化指数的非线性作用。研究发现:我国货币对产业结构调整存在明显的非线性效应,在经济处于低迷时期,紧缩的数量型及价格型货币政策更有利于经济走出泥淖,在经济处于高涨时期,宽松的数量型货币政策与紧缩的价格型货币政策搭配使用,更有助于产业结构优化升级。最后建议结合不同经济区制的特点,配合不同货币政策工具的使用,能够更精确的促进产业结构优化目标,实现货币政策预调、微调的实施要求。

Fracture properties of epoxy asphalt mixture based on extended finite element method

Crack is found to be a major distress that affects the performance of the epoxy asphalt pavement.An extended finite element method was proposed for investigating the fracture properties of the epoxy asphalt mixture.Firstly,the single-edge notched beam test was used to analyze the temperature effect and calculate the material parameters.Then,the mechanical responses were studied using numerical analysis.It is concluded that 5℃ can be selected as the critical temperature that affects the fracture properties,and numerical simulations indicate that crack propagation is found to significantly affect the stress state of the epoxy asphalt mixture.The maximum principal stress at the crack surface exhibits different trends at various temperatures.Numerical solution of stress intensity factor can well meet the theoretical solution,especially when the temperature is lower than 5℃.