Optimal investment with fixed financing costs

Models with a premium on external finance produce counterfactual predictions about liquidity management. We address this shortcoming by introducing a fixed cost of increasing external finance into an otherwise standard investment/financing problem. This additional financial friction is well-motivated by case studies and our analysis shows that it generates more realistic predictions about liquidity management: firms hold external finance and idle cash simultaneously, and may invest an additional dollar of cash flow in liquidity rather than repaying external funds or investing in productive capital. In addition to better fitting the stylized facts about the time-series and cross-sectional pattern of liquidity holding, these results may help shed light on the fragility of estimates of investment–cash flow sensitivities.     

The liquidity effects of foreign exchange intervention

This paper examines the effectiveness of foreign exchange intervention in a two-country, two-currency, general equilibrium model that allows for liquidity effects. Both sterilized and non-sterilized intervention operations have significant impacts on the allocation of liquidity in international financial markets. Whether intervention is successful in moving the exchange rate in the desirable direction depends upon the degree of sterilization of intervention and the intratemporal elasticity of substitution of the consumption goods. The model shows that there exist circumstances in which the response of exchange rate to intervention is ‘perverse’ as documented in the empirical literature.     

EXPRESSING INVENTORY CONTROL POLICY IN THE TURNOVER CURVE

Estimation of the inventory level for an entire class of items is a valuable time saver when control of inventories at the aggregate level, rather than the item level, is of interest. Inventory approximation by location in supply chain network configuration and evaluation of inventory control policy shifts, are two examples of application. In this article, various popular inventory policies are related to a general function known as an inventory turnover curve that expresses inventory levels from the combined demand of multiple items. By knowing some basic item characteristics of representative items in a product class, the type of inventory policy being used, and the current aggregate inventory level, an inventory turnover curve can be constructed. This resulting turnover curve can be used to estimate inventory levels within 4.6%, on the average, of theoretically predicted ones.     

基于我国货物出口轨迹及效应分析的出口贸易战略调整取向

改革开放以来,我国根据各个时期所处国际国内环境的变化,制定了不同的出口贸易发展战略,取得了举世瞩目的成就,从1981年到2005年六个五年计划期间,我国出口额增长了34倍,由世界32位成长为世界第三大贸易国。但根据六个五年计划的出口贸易轨迹来看,还存在一些问题,另外国际国内环境不断变化,需要我们调整贸易战略,以适应不同的环境,完成我国从贸易大国向贸易强国的转变。     

What do interest rates reveal about the functioning of real business cycle models?

This paper begins by documenting the extent to which the predictions of standard Real Business Cycle (RBC) models are incompatible with observed movements in real interest rates. The main finding of the paper is that extending the baseline model to include habit persistence in consumption and adjustment costs to capital significantly improves the model's empirical performance. In our evaluation of the model's performance, we take special care of estimating and testing predictions of the model using both moments drawn directly from the data and moments calculated after identifying shocks to the stochastic trend.     

移动支付对中国家庭储蓄率的影响

中国的高储蓄问题由来已久,降低家庭储蓄率、提高消费有助于形成以国内大循环为主体、国内国际双循环相互促进的新发展格局。本文基于2017年和2019年中国家庭金融调查(CHFS)数据,实证研究了移动支付对中国家庭储蓄率的影响。结果表明,移动支付显著降低了家庭储蓄率。进一步研究发现,缓解流动性约束、信贷约束和扩大社会网络是移动支付降低家庭储蓄率的主要途径。此外,移动支付显著降低家庭为应对健康风险、医疗风险、失业风险、收入风险等不确定性而进行的预防性储蓄。地区异质性分析显示,移动支付对家庭储蓄率的影响在西部地区、四五线城市、农村地区更大。家庭特征异质性分析显示,移动支付对家庭储蓄率的影响在农业户口家庭、中低收入家庭、低受教育水平家庭中效果更加突出。本文研究为理解中国高储蓄问题提供了新的视角,可为制定相关政策提供参考依据。     

关于解决流动性过剩问题的初步思考

本文从流动性的内涵和外延入手,分析了我国流动性过剩的全球背景和我国流动性过剩的表现及结构性特点,提出了解决流动性过剩,要坚持"市场为主、各方联动、化多为少、化少为多、标本兼治、综合解决"的思路,指出当前重点是解决经常账户顺差过大,流动性过剩的来源问题,以及农村地区资金匮乏,导致资金配置结构性失衡的问题。     

非均衡的经济动态模型

本文旨在按现实世界的本来面目建立一个非均衡的内生经济动态模型。在这个模型中 ,源于部门内和部门间关系的内生变量导致资本市场、消费品市场上产量和价格的波动。市场的非均衡过程、存货调节机制以及经济人的最优行为和适应性行为是基于对现实世界的观察进行模拟的。静态性质及其稳定性是作为一般市场动态过程的特例加以讨论的。     

资本形成路径与资本存量调整模型——基于中国转型时期的分析

本文综合考察了我国生产性资本的总量水平、形成路径及其调整机制。通过改进的方法所估算的资本存量在改革开放以来已经翻了不止两番 ,年平均增长率为7 3 6 % ,积累极为迅速。资本形成路径明显分为两个阶段 ,增量改革推动的配置效率改进使资本—产出比率在 1 994年之前持续下降 ,而近年来的资本形成过快是由于经济增长越来越倚重资本深化 ,必须通过全方位结构调整加快转型进程。本文进一步给出了我国转型期资本存量调整的供求决定框架 ,实证结果表明 ,需求导向的资本存量调整机制和投资行为已经在中国的转型经济中基本形成 ,产出水平与资本成本均为资本调整与投资需求的主要决定因素     

国有企业资本结构分析

资本结构问题是国有企业最突出的问题之一。解决好这个问题，没有现成的模式可供借鉴。本文紧密结合我国实际，深入分析我国国有企业资本结构问题的性质和特点，针时性地提出几条措施，建议在现代科学理论指导下，增强意识，增加知识，增长见识，锻炼胆识，努力探索和积极实践适合我国国情的资本结构优化机制。