人民币汇率失衡及贸易壁垒对我国出口行业影响异质性研究

贸易摩擦、新冠疫情使我国经济贸易面临严峻挑战,人民币汇率波动及贸易壁垒将常态化地影响我国出口贸易.在加快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背景下,文章基于HS分类原则,选取WTO等机构的贸易数据,通过构建BEER模型测算了人民币汇率失衡程度;通过建立固定效应面板模型研究了人民币汇率失衡及贸易壁垒双因素对我国出口行业影响的异质性.研究表明:人民币汇率失衡对我国出口贸易整体上具有显著负向影响,非关税壁垒对我国出口贸易整体上具有显著正向影响;关税和非关税构成的贸易壁垒与人民币汇率失衡双因素对我国出口贸易具有显著抑制作用,并对不同出口行业的影响存在异质性;人民币汇率失衡与非关税壁垒双因素对大多行业均具有显著负向影响,人民币汇率失衡与关税壁垒双因素对不同行业影响的正负效应及程度大小有异质性.因此,建议通过运行逆周期因子等完善人民币汇率自我修正机制;通过引导出口企业了解使用外汇衍生品等促进外汇衍生品市场运行机制的健全;通过加强"海外仓"建设及深耕RCEP框架下的东盟十国市场等实施出口行业差异化贸易策略;通过提升自主科技创新能力等加快出口行业产业转型升级,推动双循环,实现我国出口贸易高质量发展.     

影子银行、地方政府债务及金融发展动态关系研究——基于省级面板VAR模型

基于2004—2017年中国省级面板数据,运用面板向量自回归(PVAR)模型,使用系统GMM估计、脉冲响应函数、方差分解以及格兰杰因果关系检验等方法分析了影子银行、地方政府债务及金融发展之间的动态关系.结果表明:影子银行、地方政府债务与金融发展水平三者之间存在动态耦合关系.在地方政府融资能力受到约束的情况下,影子银行为地方政府提供了多元的融资方式,在增加政府融资能力的同时提升了政府债务水平;而地方政府债务需求显著推动了影子银行规模的快速发展.同时,影子银行过度扩张危害了金融市场的健康发展,降低金融发展水平,继而使地方政府的融资渠道受到约束.但金融发展并不能有效约束影子银行规模,原因在于,政府融资需求是影子银行的主要动力,若不能控制地方政府的借贷行为则无法从源头解决问题.监管机构在去杠杆的过程中,应该综合考虑影子银行与地方政府债务、金融发展之间的动态关系,如此才能够实现预期的政策效果.     

基于债务协商视角的债转股定量研究

针对我国政府、企业和银行等金融机构共同关注的债转股问题，基于债务协商谈判思想，建立部分债务股权互换模型，计算公司证券价格，探讨了债转股对公司价值、破产概率、破产损失成本和资本结构的影响，给出了银行等债权人愿意债转股的充分条件。结果表明：在事先破产清算协议贷款下，事后全部债转股总能提高公司股权价值，但并不一定能提高债券价值。只有其协商谈判能力满足一定条件，公司债权人才愿意事后选择债转股，实现帕累托改进、提高社会福利水平。其次，在公司股东协商谈判能力的一定范围内，部分债转股能提高公司价值，其最优转股债息比例随着公司资产风险的增大而增加。再次，债转股能降低公司破产风险和破产损失成本，但同时也提高了债券风险溢价。最后，随着股东谈判能力增强，最优协商转股债务比例、杠杆率都减少，而债券风险溢价增大。本文所得结果对我国政府、企业和银行如何实施债转股提供理论参考和实践指导。     

The impact of managerial political ties on corporate governance and debt financing: Evidence from Ghana

In this study, we draw upon insights from agency theory to examine the impact of managerial political ties on cost of debt and also to explore whether corporate governance mediates this impact. We hypothesize that political ties reduce financial reporting quality, disclosure of non-financial information and board independence, and are therefore associated with higher interest rates. We also hypothesize that the negative effect of political ties on the cost of debt will be stronger if firms borrow from privately-owned banks versus government-owned banks. Using data from Ghana, we find support for our direct and moderation hypotheses; political ties are associated with high interest rates and poor corporate governance. However, we do not find evidence of mediation. Altogether, the findings reveal the dark side of political connections and highlight the cost of political embeddedness in emerging credit markets.     

资本结构与员工劳动生产率

债务作为重要的公司治理手段，可以降低企业、管理层与员工之间的委托代理成本，提高员工劳动生产率.同时，债务水平上升将提高企业破产风险，对企业和员工的人力资本投入与员工劳动生产率可能产生不利影响.以我国1999年一2014年工业企业上市公司为样本，本文不同佑计方法的实证结果均表明企业的债务水平越高，员工劳动生产率越低.在其他因素不变的情况下，企业的财务困境加剧了债务对员工劳动生产率的不利影响;债务对员工劳动生产率的负作用在人力资本依赖度高的公司以及在外部就业环境好的地区更加显著.对于债务与员工劳动生产率作用的中介效应分析与分位数回归结果也说明债务上升可能导致企业人力资本投资下降，对员工劳动生产率产生不利影响.研究为我国“去杠杆”经济政策提供了微观企业层面的经验证据.     

An evaluation of alternative fiscal adjustment plans: The case of Italy

What advice can be given to the policymaker to reduce the burden of public debt after a crisis? In this situation, the debt consolidation calls for fiscal surplus based on increases in taxes and/or reductions in public spending. This paper aims at answering to the above question. Specifically, it evaluates different policy options on the table using the estimated model of the Italian dynamic General Equilibrium Model (IGEM). Our main message is that plans aimed at reducing the public debt based on tax increases rather than expenditure reductions are more effective. Therefore, consolidation should be designed on the former.     

Public Debt Sustainability in Africa: Building Resilience and Challenges Ahead

The increased access of African countries to international capital markets has put public debt sustainability at the forefront of the continent's policy agenda. Utilising the ‘stabilising primary‐balance’ approach, this article finds that the actual primary balances exceeded those required to keep public debt at the 2007 level in about half the countries studied, and in several cases, those needed to reduce public debt‐to‐GDP to sustainable thresholds. The interest rate‐growth differential (IRGD) drove sustainability, underscoring the importance of growth and borrowing for growth‐enhancing outlays. As the IRGDs are likely to narrow over the longer term, fiscal policies will need to play a greater role.     

运营滞后与信用担保互换下的项目投资决策模型

在项目投资面临运营滞后以及债务融资约束的情形下，基于实物期权框架构建了企业家签订信用担保互换契约的两阶段投资决策模型。运用动态规划以及均衡定价方法，给出了企业家股权及期权价值的显示表达，得到了两个阶段担保成本满足的代数方程，并进一步分析了运营滞后和信用担保下企业家的最优投资决策问题。数值结果表明：外部运营时滞会提高杠杆率，导致企业家提前投资，同时会提高企业家第一阶段债务融资的担保成本，但会降低第二阶段债务融资的担保成本；随第一阶段投资额度逐渐增大，企业家的最优投资水平呈U型变化，第一阶段债务融资时的担保成本单调递减，而第二段债务融资时的担保成本呈现倒U型；企业家两个阶段的融资缺口对项目最优投资水平、最优破产水平以及担保成本有显著影响。     

Classification with minimum ambiguity under distribution heterogeneity

The traditional classification is based on the assumption that distribution of indicator variable X in one class is homogeneous. However, when data in one class comes from heterogeneous distribution, the likelihood ratio of two classes is not unique. In this paper, we construct the classification via an ambiguity criterion for the case of distribution heterogeneity of X in a single class. The separated historical data in each situation are used to estimate the thresholds respectively. The final boundary is chosen as the maximum and minimum thresholds from all situations. Our approach obtains the minimum ambiguity with a high classification accuracy allowing for a precise decision. In addition, nonparametric estimation of the classification region and theoretical properties are derived. Simulation study and real data analysis are reported to demonstrate the effectiveness of our method.