创意产业对区域经济结构转型长短期效应的比较

利用中国2005—2014年省际面板数据,本文主要考察创意产业对区域经济结构的长短期影响。结果表明,创意产业与地区经济结构并非呈简单的线性关系,具体表现为创意产业与第三产业占比呈倒U型关系,与第二产业占比呈U型关系,且这一结论是稳健的。在短期,创意产业主要通过需求方面优化居民消费结构,更能提升第三产业产值,加快经济结构升级;在长期,更体现在通过产业融合及全要素生产率的提高来促进传统制造业转型升级,对改善当前中国低端制造业面临的困境具有重大意义。     

政商关系对城市商业银行不良贷款率的影响

本文基于2004—2016年95家城市商业银行数据,分析了政商关系对城市商业银行不良贷款率的影响。研究发现,政商关系越“亲清”,城市商业银行不良贷款率越低。其中,政府与市场关系、市场中介组织发育和法律制度环境两者存在互补关系,政府对企业的服务、政府透明度、市场分配经济资源比重、减轻农民税费负担、减轻企业税外负担、律师等市场中介服务条件以及消费者权益保护对降低城市商业银行不良贷款率的影响较为显著。此外,政商关系对城市商业银行不良贷款率还存在异质性影响,相比低不良贷款率省份和外资入股的城市商业银行,“亲清”的政商关系更能降低高不良贷款率省份和无外资入股城市商业银行的不良贷款率。本文的研究对建设现代金融体系和防控金融风险具有重要的现实意义。     

Too Little or too much? Exploring U‐shaped Relationships between Corporate Environmental Performance and Corporate Financial Performance

Despite 40 years of research on the relationship between corporate environmental performance (CEP) and corporate financial performance (CFP), there is no generally accepted theoretical framework that explains the contradictory results that have emerged. This unsatisfactory status may be attributed to the fact that linear models dominate the research. Based on an international sample of 2361 firm‐years from 2008 to 2012, we find empirical evidence of a non‐linear, specifically a U‐shaped, relationship between carbon performance and profitability as well as between waste intensity and profitability. The same result holds for the relationship between carbon performance and stock market performance, but solely for manufacturing industries. Our empirical findings provide evidence for the theoretical framework of a ‘too‐little‐of‐a‐good‐thing’ (TLGT) effect, which indicates that the type of relationship (positive, negative) depends on the level of CEP. More precisely, there is a negative CEP–CFP relationship for companies with low CEP and a positive association for high CEP. Copyright © 2015 John Wiley & Sons, Ltd and ERP Environment     

Estimation of the mean in ranked set sampling with non responses

The estimation of the population mean when ranked set sampling [rss] is used for selecting the sample and non responses [nr] are present, is studied. The nr stratum is sub sampled using simple random sampling with replacement. Two strategies are analyzed. One of them is based on the selection of a sub sample from the nr in each cycle. The other uses sub samples selected among the nr in each rank.  The accuracy of the proposed estimators is characterized by the corresponding expected variances. Simulations and real life data are used for analyzing the behavior of them. Acknowledgements: This paper was developed partially during the visit of the author to Université des Antilles et Gouyane. The author gratefully acknowledges the helpful suggestions of the referees and thanks the support of DAAD for visiting Humboldt University where a version of the paper version was made.     

汇率波动率与中国对主要贸易伙伴的出口

本文研究汇率波动率对中国向三个主要贸易伙伴美国、欧盟和日本出口的影响。通过协整检验,误差修正模型和Granger非因果检验等方法估计变量间长短期的关系。研究表明,中国向美国和欧盟的实际出口与实际汇率波动率存在长期显著的负相关关系,而中国向日本的出口与汇率波动率无关。短期内汇率波动率只影响中国向美国的出口,对向欧盟和日本的出口没有影响。     

Nearly exact sample size calculation for powerful non‐randomized tests for differences between binomial proportions

In the case of two independent samples, it turns out that among the procedures taken in consideration, BOSCHLOO'S technique of raising the nominal level in the standard conditional test as far as admissible performs best in terms of power against almost all alternatives. The computational burden entailed in exact sample size calculation is comparatively modest for both the uniformly most powerful unbiased randomized and the conservative non‐randomized version of the exact Fisher‐type test. Computing these values yields a pair of bounds enclosing the exact sample size required for the Boschloo test, and it seems reasonable to replace the exact value with the middle of the corresponding interval. Comparisons between these mid‐N estimates and the fully exact sample sizes lead to the conclusion that the extra computational effort required for obtaining the latter is mostly dispensable. This holds also true in the case of paired binary data (McNemar setting). In the latter, the level‐corrected score test turns out to be almost as powerful as the randomized uniformly most powerful unbiased test and should be preferred to the McNemar–Boschloo test. The mid‐N rule provides a fairly tight upper bound to the exact sample size for the score test for paired proportions.     

由非货币性交易新准则引发的一系列思考

为了适应我国企业经营方式的变化和提高证券市场会计信息披露的质量，财政部于2001年初对非货币性交易准则重新予以修订。新准则实施1年来，发挥了抑制关联交易、打击证券投资市场投机活动的重要作用，体现了会计准则的中国特色和国际化的有机协调。但任何事物都有其两面性，新准则在其具体实施过程中出现了准则和制度的衔接、自身的发展与完善等诸多问题，而此类问题的出现应当引起广大会计界人士的关注。