期限错配如何影响商业银行的稳健性——基于商业银行微观数据的实证分析

本文从理论层面梳理了我国商业银行期限错配与经营稳健性之间的内在传导机制。在此基础上,以2011—2018年间我国202家商业银行的非平衡面板数据为样本,实证分析了期限错配对银行稳健性的影响,并按照银行性质不同进行了异质性研究。研究发现:(1)期限错配显著弱化了银行经营的稳健性;(2)将影响程度进行分样本比较,全国性股份制银行高于城市商业银行,大型国有商业银行和农村商业银行结果不显著;(3)进一步分析期限错配影响银行稳健性的传导渠道,发现流动性风险在两者之间具有显著的中介效应,在样本分类比较中,全国性股份制银行流动性风险的相对贡献为10.3%,低于城市商业银行的22.6%,说明相较于城市商业银行,全国性股份制银行的融资渠道多、融资能力强,因而流动性风险对其稳健性的影响有限。     

从精准扶贫走向跨区域联合开发——基于我国深度贫困县分类研究基础上的扶贫战略升级建议

我国扶贫工作经历了漫长的艰苦奋战,尤其2015年以来,精准扶贫力度空前加大、成效显著,终于在2020年末,我国脱贫攻坚取得胜利、彻底消除绝对贫困.然而,从贫困县尤其深度贫困县情况看,由于贫困区自身条件较为恶劣而且连片贫困区域较多,许多区域虽如期脱贫、消除了“绝对贫困”,仍无法短期内根除“相对贫困”.笔者在对全国334个深度贫困县分类研究和实地考察基础上,拓展精准扶贫思路,从贫困连片区、跨县角度研究,提出了跨区域联合开发的扶贫战略升级建议.     

Combining survey long-run forecasts and nowcasts with BVAR forecasts using relative entropy

This paper constructs hybrid forecasts that combine forecasts from vector autoregressive (VAR) model(s) with both short- and long-term expectations from surveys. Specifically, we use the relative entropy to tilt one-step-ahead and long-horizon VAR forecasts to match the nowcasts and long-horizon forecasts from the Survey of Professional Forecasters. We consider a variety of VAR models, ranging from simple fixed-parameter to time-varying parameters. The results across models indicate meaningful gains in multi-horizon forecast accuracy relative to model forecasts that do not incorporate long-term survey conditions. Accuracy improvements are achieved for a range of variables, including those that are not tilted directly but are affected through spillover effects from tilted variables. The accuracy gains for hybrid inflation forecasts from simple VARs are substantial, statistically significant, and competitive to time-varying VARs, univariate benchmarks, and survey forecasts. We view our proposal as an indirect approach to accommodating structural change and moving end points.     

耐用品、投资专有冲击与货币政策福利

本文构建蕴含耐用品与非耐用品的两部门DSGE模型,研究投资专有冲击对货币政策及社会福利的影响。投资专有技术进步改进了投资转化为生产资本的效率,放大边际成本波动,增加了厂商调价动机和价格水平变动。即使耐用品价格完全灵活,最优货币政策也无法同时稳定价格和实际GDP。研究发现:(1)耐用品相对价格缺口波动率的上升虽然增加了实际GDP波动,但能够有效地降低投资专有技术对边际成本的冲击,减少价格变动的福利损失。所以两部门投资专有冲击时,央行倾向于稳定价格水平。与其相反,在单部门投资专有冲击和两部门生产技术冲击时,最优货币政策应降低耐用品相对价格缺口波动,稳定实际GDP。(2)对比三种泰勒规则:钉住非耐用品PPI、钉住加权平均PPI及钉住CPI,福利分析发现钉住非耐用品PPI最优,钉住CPI次之,钉住加权平均PPI的福利损失最大。就损失程度而言,投资专有冲击的福利损失是生产技术冲击的2倍,表明投资专有冲击加剧了最优货币政策在稳定价格与实际GDP间的权衡。     

论背俗一物二卖中的回复原状救济

一物二卖中第二次买卖违背善良风俗时，如何救济第一买受人对于取得实物的期待利益，是民法学中的经典疑难问题，也是实践中经常发生的代表性案型。就此存在“处分背俗无效”与“处分有效+背俗侵权”两种救济进路，无效进路下可进一步分为“绝对无效”与“相对无效”方案，侵权进路下可分为“标的物返还出卖人”“标的物直接让与第一买受人”等侵权责任承担方式。救济第一买受人的目标是使其法律地位回复到应有状态，影响回复原状方式选择的实质因素包括出卖人原本另行处分之可能性、出卖人原本破产和被执行的风险大小。根据这一分析框架，第二买受人单方背俗时，所有权变动并不无效，只能采侵权进路，第二买受人应将标的物直接让与第一买受人；出卖人与第二买受人双方背俗时，应采相对无效方案，所有权变动相对于第一买受人无效。     

Validating a consumer-based service brand equity (CBSBE) model in the airline industry

Over time, scholars have argued that consumer-based brand equity (CBBE) models are less suitable for service-dominant brands, mainly because the role of customer experience with services is often disregarded. Also, the absence of two essential components, brand consistency and perceived value, signals a lack of depth in creating service brand equity. To address these gaps, we examine service-branding theory by conceptualizing and validating a consumer-based service brand equity (CBSBE) model in Sarker et al. (2019) in the context of airlines. Airline service direct experience and brand consistency are highly important aspects for strengthening brand equity components of services. Subsequently, maximizing perceived value, followed by creating favorable brand meaning are the nucleus of branding services. Using the most advanced PLS-SEM techniques, our CBSBE model is highly robust in explaining the theoretical notion of creating service brand equity. Thus, achieving a pleasant and desirable experience and maintaining consistency across direct service touchpoints would be an effective strategy for service organizations.     

与发展中国家的贸易是否扩大了美国的相对工资差距

对外贸易不仅直接影响着相对工资差距,还通过技术创新效应间接影响着相对工资差距。本文运用美国制造业1997-2006年的面板数据,实证分析了美国与发展中国家的贸易对美国制造业相对工资差距的影响。研究结论是:来自发展中国家劳动密集型产品的进口竞争没有扩大美国制造业所有行业的相对工资差距,美国劳动密集制造部门相对工资差距的扩大与来自发展中国家的进口竞争有一定的关联,但技术密集制造部门相对工资差距的扩大与其无关;美国对发展中国家的出口贸易以及国内的技术创新在很大程度上扩大了美国制造业的相对工资差距。     

社会资本在减轻农村贫困中的作用：文献述评与研究展望

近年来,社会资本在减轻农村贫困中的作用逐渐成为发展经济学家关注的一个热点。本文分别从静态和动态两个视角综述了相关研究的思路和方法：从静态视角来看,信任对于减少绝对贫困有积极的作用,但某些形式的社会资本难以减轻绝对贫困,关于社会资本是否能减轻相对贫困则尚未取得一致的认识;从动态视角来看,社会资本通过非正式保险的机制平滑消费、减轻暂时贫困,通过促进融资和创业、保护产权、促进公共品提供和劳动力流动,有助于消除长期贫困。总的来看,随着市场化进程的深入,社会资本反贫困的积极作用有减弱的趋势。本文基于理论评述,提出了深化社会资本的减贫理论机制（尤其是对相对贫困的作用机制）、市场化进程中的社会资本反贫困机制、改进社会资本测量、加强因果效应识别等未来的研究方向。     

Validity of climate change forecasting for public policy decision making

Policymakers need to know whether prediction is possible and, if so, whether any proposed forecasting method will provide forecasts that are substantially more accurate than those from the relevant benchmark method. An inspection of global temperature data suggests that temperature is subject to irregular variations on all relevant time scales, and that variations during the late 1900s were not unusual. In such a situation, a “no change” extrapolation is an appropriate benchmark forecasting method. We used the UK Met Office Hadley Centre’s annual average thermometer data from 1850 through 2007 to examine the performance of the benchmark method. The accuracy of forecasts from the benchmark is such that even perfect forecasts would be unlikely to help policymakers. For example, mean absolute errors for the 20- and 50-year horizons were 0.18  C and 0.24  C respectively. We nevertheless demonstrate the use of benchmarking with the example of the Intergovernmental Panel on Climate Change’s 1992 linear projection of long-term warming at a rate of 0.03  C per year. The small sample of errors from ex ante projections at 0.03  C per year for 1992 through 2008 was practically indistinguishable from the benchmark errors. Validation for long-term forecasting, however, requires a much longer horizon. Again using the IPCC warming rate for our demonstration, we projected the rate successively over a period analogous to that envisaged in their scenario of exponential CO₂ growth—the years 1851 to 1975. The errors from the projections were more than seven times greater than the errors from the benchmark method. Relative errors were larger for longer forecast horizons. Our validation exercise illustrates the importance of determining whether it is possible to obtain forecasts that are more useful than those from a simple benchmark before making expensive policy decisions.