环境规制、融资约束与企业污染减排——来自排污费标准调整的证据

“十四五”规划提出建设人与自然和谐共生的现代化,这要求持续推进污染减排促进经济绿色低碳转型,实现环境与经济协同发展。基于2007年起排污费提高的政策冲击和2004-2013年工业企业污染数据,本文使用倍差法考察排污费提高的污染减排效果以及融资约束对政策效应的影响。研究发现排污费提高后,污染排放水平显著下降,但产出也受到较大冲击;企业减排方式存在明显差异,大型企业主要通过降低污染强度的方式来降低污染排放,而中小型企业则主要采取降低生产规模的方式来降低污染排放;进一步基于环境投融资角度对企业减排行为的分析揭示,融资约束影响中小企业污染减排,加剧排污费提高对产出的影响。因此,提高绿色金融的环境投融资供给能力是促进经济绿色转型的重要途径。     

基于列生成的高速铁路车站作业计划调度调整方法研究

大型高速铁路车站到发线及列车进路的冲突是调度调整的重点,为了提高调整效率和效果,在将问题抽象为时空网络上多商品流的基础上,考虑技术作业要求、作业间隔时间、线路和进路运用规则等约束条件,以列车总晚点时间小、旅客便捷性好为目标,构建集到发线、咽喉进路和到发时刻为一体的车站作业调度调整0-1整数规划模型。针对调度调整的强实时性,设计基于列生成的求解算法,并以长春西站为例进行验证。结果表明,该方法可在较短时间内得到满意的车站作业计划调整方案。     

Impacts of the timing of the discovery of a subsequent event on the auditors’ approach to subsequent events

This study investigates the underlying causes affecting auditors’ approaches to subsequent events. As auditors are required to perform the majority of subsequent events procedures near the due date of the audit report, I examine whether auditors are less likely to make adjustments or disclosures regarding subsequent events that occur after the audit completion, but before issuing the audit report. Results indicate that auditors were less likely to adjust Type I events that occurred after audit completion when the risk was low, but not when the risk was high. This was not the case for Type II events, which only require disclosure.     

从出口大国走向出口强国--1980-2002年全球出口国别格局变化与中国的地位分析

本文以全球出口国别格局的变化为背景,分析20年来中国与美、日、欧等发达国家的双边贸易关系走势,指出中国在已成为出口大国的新形势下,需要以大国的心态来处理国际贸易事务,逐步改变多年来形成的一些习惯思维,调整一些因特定环境出台的刺激政策,以解决长期积累的一些结构性问题,为从出口大国走向出口强国打好基础.     

通胀预期与货币需求:实际调整与名义调整机制检验

货币存量调整机制一般可分为两类设定方式:实际调整过程和名义调整过程.在实际调整机制下,预期通胀对货币需求没有独立的影响,而在名义调整机制下,通胀预期自然成为货币需求的一个解释变量.通胀预期在货币需求函数中显著可能并不意味着通胀预期直接影响了货币需求,而是表明了部分调整机制的误设.本文根据预期通胀率在货币需求函数中的显著性,比较了货币持有量名义调整和实际调整机制假说对我国的解释能力,认为名义机制比实际机制更好地描述了中国的经验.我们在一个状态空间中联合估计预期通胀以及货币需求方程,避免了传统"两步法"的不足.     

欧盟对华贸易逆差问题研究

在中国与欧盟贸易高速发展的同时,欧盟对华贸易逆差不断扩大。本文运用来自欧盟、世界贸易组织以及中国国内的大量统计数据,对欧盟对华贸易逆差的成因进行解析。分析表明:欧盟的经济政策与欧元的持续升值、中国产业结构的调整、欧盟对华贸易“逆差集中效应”,以及欧盟全球化配置资源的需要促成了欧盟对华贸易逆差不断扩大,这四大因素将对未来欧盟与中国的贸易产生持续的影响。     

中国纺织服装出口企业贫困增长源于对比较优势战略的过分依赖

比较优势战略,从静态角度看,有利于一国充分发挥自己的优势,促进经济的健康发展;但从动态看,众多国家同时采用这一战略,必然导致合成谬误的产生。即专业化导致生产能力快速增长,产品供应超过需求,市场价格下降,销售越多,收益反而下降,其结果就是企业的贫困增长。发展中国家必须采取有力措施,创造良好的制度环境,使企业能够摆脱对价格竞争路径的过度依赖,从技术进步与自主品牌的建设中获得收益,而不能完全按照自由主义的比较优势理论来发展相关产业与对外贸易。     

入世后我国主要贸易税收政策功能调整的定位分析

入世后,我国贸易税收政策的功能必须在经济全球化的背景下制定和调整。本文通过分析关税、出口退税、反倾销税三大贸易税收政策的主要功能在内、外部因素的影响下发生的变化,提出了我国入世后贸易税收政策功能调整的战略方向及措施:应强化关税产业保护功能,弱化财政收入功能;应以“走出去”战略为依据,真正发挥出口退税制度的保护产业和鼓励出口的基本功能;应发挥经济比较优势,加强国际分工合作,避免反倾销税成为过度产业保护的工具。     

What explains the value premium? The case of adjustment costs,operating leverage and financial leverage

This paper empirically examines and compares the different theoretical predictions on how adjustment costs, operating and financial leverage influence the value premium. Consistent with Ozdagli (2012), financial leverage plays a dominant role, supported by adjustment costs (which represent the degree of investment irreversibility). Specifically, the observed value premium is driven by the financial leverage differences between value and growth firms, partially neutralized by investment irreversibility. The relation between the value premium and investment irreversibility is contrary to the intuition in Zhang (2005) and Cooper (2006). Operating leverage does not significantly influence the value premium.     

Pricing CDS spreads with Credit Valuation Adjustment using a mixture copula

Credit derivatives pricing models before Basel III ignored losses in market value stemming from higher probability of counterparty default. We propose a general credit derivatives pricing model to evaluate a Credit Default Swap (CDS) with counterparty risk, including the Credit Valuation Adjustment (CVA) in order to optimize the economic capital allocation. We work from the model proposed by Luciano (2003, Working Paper, International Center of Economic Research) and the general pricing representation established by Sorensen and Bollier (Financial Analysts Journal 1994;50(3):23–33) to provide a model close to the market practice, easy to implement and fitting with Basel III framework. We approach the dependence between counterparty risk and that of the reference entity with a technical tool: the copula, in particular, the mixture one that combines common “extreme” copulas. We study the CDS's vulnerability in extreme dependence cases. By varying Spearman's rho, the mixture copula covers a broad spectrum of dependence and ensures closed form prices. We end up with an application on real market data.