环境管制与全要素生产率增长:APEC的实证研究

本文运用Malmquist-Luenberger指数方法测度了APEC17个国家和地区1980—2004年包含CO2排放的全要素生产率增长及其成分。首先,估计了对CO2的排放没有管制、CO2排放水平保持不变、CO2排放水平减少三种情形下的生产率指数及其成分。其次,对影响环境管制下全要素生产率增长的因素进行了实证检验。本文主要的结论有:在平均意义上,考虑环境管制后,APEC的全要素生产率增长水平提高,技术进步是其增长的源泉;17个国家和地区中,有7个国家和地区至少移动生产可能性边界1次;人均GDP、工业化水平、技术无效率水平、劳均资本、人均能源使用量和开放度均对环境管制下的全要素生产率增长有显著的影响。     

多站制连续波高精度测量体制研究

高精度测量体制直接关系到飞行试验能否获取完整的高精度测量数据。针对5种高精度测量体制，提出了选择测量体制的原则，从可靠度、精度、技术先进性、设备可实现性、使用方便性、靶场适应用性等方面进行论证，认为连续波多RR系统是一种较好的测量体制，并对该体制的关键技术难点的解决途径进行了分析。     

Factors affecting the variability of IRT equating coefficients

Knowing the effect of the factors that can influence the variability of the equating coefficients is an important tool for the development of the linkage plans. This paper explores the effect of various factors on the variability of item response theory equating coefficients. The factors studied are the sample size, the number of common items, the length of the chain, and the possibility of averaging the equating transformations related to different paths that connect the same two forms. Both asymptotic and simulations results are provided.     

Does mandatory IFRS adoption improve information quality in low investor protection countries?

We examine the effect of mandatory IFRS adoption on the information quality of financial reporting in France, Germany and Sweden. These three Western European civil law countries are characterized as low investor protection by the World Economic Forum's 2012/2013 Global Competitiveness Report. Using data for 2003 and 2011, we find significant improvement in both forecast accuracy and forecast dispersion following mandatory IFRS adoption in all three countries. Furthermore, the effect on information quality is greater the lower the strength of investor protection. These results suggest that mandatory IFRS adoption in low investor protection countries leads to an improvement in information quality. A tentative implication of the results is that standard setters should not delay IFRS adoption pending regulators implementing a high investor protection.     

Mixed signals: A dynamic analysis of warranty provision in the automotive industry, 1960–2008

Often, signaling research in the strategy and economics literature postulates the existence of an ostensible signal and then empirically tests its veracity, utilizing cross‐sectional data. We argue that this static approach does not allow researchers to fully incorporate the concept of equilibrium in their analysis, thereby potentially violating a key axiom of signaling theory. We propose that a dynamic analysis of signals can address this omission, and then conduct such an analysis. We use empirical data on warranty coverage offered by automobile manufacturers in the U.S. market extending from the first warranty offered by the industry in 1960 through to 2008. Our findings support the notion that signaling behavior differs in periods of equilibrium and disequilibrium, in turn influencing signal accuracy. Copyright © 2013 John Wiley & Sons, Ltd.     

物流实践型人才素质可持续提升模式研究

通过分析物流行业员工进修培训需求现状,构架物流实践型人才素质可持续提升模型,创新了"定期定向回招进修培训"子模型,将政府、高校、行业企业、协会等多方主体扩充到从业者进修培训平台中,克服单独依靠企业自身开展培训进修的瓶颈约束,多协同方共同完成物流从业员工进修培训,提升物流行业整体作业水平和行业素质。     

Forecast performance of WASDE price projections for U.S. corn

We conduct a comprehensive evaluation of the season‐average price projections for U.S. corn as published by the U.S. Department of Agriculture's World Agricultural Supply and Demand Estimates (WASDE), an important issue given reduced resources and increased program scrutiny within the Federal Government. This study is the first in the literature to evaluate the WASDE corn projections relative to futures adjusted forecasts throughout the forecasting cycle using a lengthy evaluation period (1980/81–2012/13). We find that WASDE projections provide lower RMSEs relative to futures adjusted forecasts for 9 of the 16 forecast periods, 4 of which are statistically different. Encompassing tests show that WASDE projections often provide incremental information not present in the futures adjusted forecasts. Composite forecasts based on futures adjusted forecasts and WASDE projections reduced the RMSEs over all forecast periods by an average 12–16%. Favorable average trading profits may be generated for some forecast months using WASDE projections. Overall, our results suggest that WASDE projections of the U.S. corn season‐average price provide useful information to the market and could enhance the efficiency of the agricultural sector.     

中国省际工业新产品技术效率研究

本文在提出新产品技术效率(NPTE)是衡量工业自主创新效率有效标准的基础上,通过方向性距离函数的拓展,从新产品视角构建了一个自主创新效率和生产效率(TE)既区分又联系的分析框架,从而能够以生产效率为参照系对工业自主创新效率进行评价。本文发现,1999—2007年中国省际大中型工业平均TE比NPTE高29%左右;地区工业NPTE呈缓慢上升态势,且东部>中部>西部;近年来中国工业NPTE与TE的差距有所扩大;企业规模、FDI、进口、R&D人员和消化吸收投入促进了NPTE的提高,R&D投资、技术引进和国内技术购买则有抑制作用,产权改革和技术改造的作用也不显著。研究结果还表明,地区工业R&D投资与NPTE负相关,而这又与非国有产权特征密切相关。     

LDS-1H电脑水分测定仪测定玉米水分应用与分析

本文以LDS-1H型电脑水分测定仪为例,分析其测定玉米水分的准确度和影响因素,并提出了减小误差的建议,旨在找出一种能快速、方便、准确测定玉米水分的方法。     

Do Publicly Signalled Earnings Management Incentives Affect Analyst Forecast Accuracy?

Using a panel of listed Australian firms for the years 1999–2007, this paper investigates whether analysts' forecast efficiency is improved by the occurrence of a publicly observable event, such as a CEO appointment, which signals a firm's earnings management incentives. Two supporting hypotheses are also tested: first, that CEO appointments are associated with income‐decreasing earnings management; and second, that analyst forecast errors increase with the level of earnings management present in current period financial statements. Consistent with prior literature, we find income‐decreasing earnings management in the year of CEO appointment. Earnings management, as a general phenomenon, is found to be significantly related to analyst forecast errors in the period in which the earnings management occurs. However, we present evidence that analyst forecasts for current year earnings are significantly more accurate with respect to earnings management in cases where a CEO is appointed during the current financial period.