Lumpy investment and the monetary transmission mechanism

The lumpy nature of plant-level investment is generally not taken into account in the context of New Keynesian monetary theory (see, e.g., 8 and 32). Our main result shows that if this theory is augmented by a standard model of lumpy investment, monetary policy shocks lead to large but very short-lived impacts on output and inflation, in a way that goes against empirical evidence and the consensus view in the literature.     

New Keynesian perspectives on labor market dynamics

We find that demand shocks play an important role for business-cycle fluctuations in unemployment and job vacancies. The reason is that those shocks give a strong incentive to demand-constrained firms to adjust production and thereby labor input. Furthermore we argue that whether real wage rigidity à la Hall [2005. Employment fluctuations with equilibrium wage stickiness. American Economic Review 95, 50–65] helps explain the remaining part of the unemployment volatility puzzle depends critically on assumptions regarding the form of the wage bargain between firms and workers. Real wage rigidity tends to generate volatility in employment only in the case in which hours are chosen efficiently. If, on the other hand, the real wage is allowed to affect firms's choices of hours directly, the feature of real wage rigidity loses its ability to increase employment volatility.     

Prices are sticky after all

Economists have interpreted the evidence that prices change every four months as implying that sticky prices cannot be important for monetary transmission. Theory implies that this interpretation is correct if most price changes are regular, but not if a large fraction are temporary, as in the data. Since regular prices are much stickier than temporary ones, our models predict that the stickiness of the aggregate price level matches that in a standard Calvo model or a standard menu cost model in which micro-level prices change about once a year. In this sense, prices are sticky after all.     

股票投资的粘性预期及其模型分析

对股票市场投资预测模式的研究是股市基础研究的一项重要工作。本对股票投资粘性预期的模型分析表明，在信息不完全的情况下，投资的预期具有粘性和突变性双重特征，体现出多逻辑不确定性的特点。同时，基本面信息和技术面信息的增多都有助于粘性预期向理性预期接近，但两类信息的作用不完全一致，具有某种非线性的代偿关系。     

Inventories,sales uncertainty,and financial strength

We investigate the empirical linkages between sales uncertainty and firms’ inventory investment behavior while controlling for firms’ financial strength. Using large panels of manufacturing firms from several European countries we find that higher sales uncertainty leads to larger stocks of inventories. We also identify an indirect effect of sales uncertainty on inventory accumulation through the financial strength of firms. Our results provide evidence that financial strength mitigates the adverse effects of uncertainty.     

企业异质性和对外直接投资——基于中国企业的检验证据

随着“走出去”战略实施,中国企业对外直接投资大量增加。本文利用中国企业对外投资数据,实证检验了企业异质性和对外投资决策的相互关系。除验证了企业生产率越高越有可能对外投资的传统理论外,本文还发现了中国企业对外投资的特征。具体表现如下:第一,与投资中低收入国家相比,投资高收入国家的企业生产率不一定高;第二,越有效率的企业不一定进行市场寻求型投资,但越有可能进行技术研发类投资;第三,对外投资的国有企业可能不比其它类型的对外投资企业生产率更高;第四,如果目的国是中低收入国家,投资目的国越多企业生产率不一定越高。因此通过本文的微观数据检验,深化了对中国企业对外投资的理解。     

房地产价格对企业投资结构的影响研究

依据我国2009—2020年微观企业面板数据,运用固定效应模型,考量房地产价格对企业投资结构的影响。结果显示,房地产价格对企业金融资产投资占比正向影响显著,对企业实体资产投资占比负向影响显著;房地产价格通过融资约束效应、劳动力成本效应与套利动机效应对企业投资结构产生影响。与西部地区企业相比,房地产价格对东部、中部地区的企业投资结构影响更显著;与非国有企业和中小型企业相比,房地产价格上涨对国有企业和大型企业金融资产投资占比的促进作用更弱。鉴于此,应合理调控房地产价格,优化企业融资环境和投资结构,促进企业高质量发展。     

Stickiness of Rental Rates and Developers’ Option Exercise Strategies

In this study we incorporate sticky rents into a real options model to rationalize the widely documented overbuilding puzzle in real estate markets. Given the assumption that developers’ objective function is to maximize total revenue by selecting an optimal occupancy level, our model provides a better explanation of the phenomena we observed in the real world than the traditional market-clearance based real options models. We also show that developers’ exercise strategies can be affected by the size and the type of property markets. In other words, developers’ exercise strategies could differ among markets and under different conditions. Submitted to Cambridge—Maastricht 2005 Symposium.     

Unemployment as excess supply of labor: Implications for wage and price inflation

The introduction of both market-clearing wages and nominal rigidities on wage setting can be used to rationalize unemployment as excess supply of labor in the New Keynesian model. As a result, wage inflation dynamics are forward-looking and depend negatively on the rate of unemployment. Moreover, both price inflation and wage inflation evolve as indicated by equations equivalent to those obtained in Erceg et al. (2000), though with different slope coefficients. In an equal-volatility comparison, the model with unemployment conveys less price stickiness and more wage stickiness.     

产业集群知识网络中粘滞知识的转移机理研究

粘滞知识在产业集群知识网络中的转移对于知识流动的效果有着极大的影响,决定着产业集群中技术创新能力的提升和产业集群结构优化与升级.本文分析产业集群知识网络的立体结构,剖析了产业集群的内部和外部知识网络中各节点的联系,探讨了知识在该立体结构中各个层次的企业、集群中的高校、科研机构以及政府部门等各节点之间的流动,从点、线、面、体的角度对产业集群知识网络中的粘滞知识流动进行分析,在此基础上得出结论,以期促进我国产业集群知识网络粘滞知识的转移.     

信贷扩张、资产价格上涨与调控政策选择

本文首先从理论上考察信贷与资产价格之间的关系,利用Allen和Gale的资产价格泡沫模型,并根据我国实际情况,通过放松假设条件说明信贷扩张是资产价格上涨的重要原因,资产供给、信贷政策、银行信贷管理能力会影响资产价格的上涨。通过对我国经济的实证研究发现,我国的信贷与资产价格之间存在相关关系,最后指出从资产供给、信贷政策、银行信贷管理等方面入手制定政策抑制资产价格的进一步上涨。