铁路技术改造项目后评价方法探讨

技术改造是在充分利用现代科技成果和先进经验的基础上,改造既有的设备、工艺、产品等生产技术,实现扩大再生产,达到提高技术水平、改善生产条件、保证安全、节能降耗,全面提高企业和社会综合效益的目的,是促进企业技术进步,增强企业持续发展能力的关键所在。运用建设项目后评价理论和方法,结合铁路技术改造项目的特点,提出铁路技术改造项目后评价方法。     

柱后衍生法测定食用油中黄曲霉毒素B_1含量的研究

通过使用柱后衍生系统,建立柱后碘衍生法测定食用油中黄曲霉毒素B_1含量的方法。结果表明:黄曲霉毒素B_1在0.5~55.0 ng/mL浓度范围内具有良好的线性相关性,相关系数为0.999;对黄曲霉毒素B_1浓度0.4、2.0、20.0ng/mL的标准品进行6次平行分析,重复性结果良好,回收率范围为85.8%~106.2%,方法检出限为0.050μg/kg。     

POST‐PRIVATIZATION OWNERSHIP AND FIRM PERFORMANCE: A LARGE META‐ANALYSIS OF THE TRANSITION LITERATURE

This paper aims to perform a large‐scale meta‐analysis of the relationship between post‐privatization ownership and firm performance in Central and Eastern Europe and the former Soviet Union. Baseline estimation of a meta‐regression model that employs a total of 2,894 estimates drawn from 121 previous studies indicated the superior impact of foreign ownership on firm performance in comparison with state and domestic private entities. Furthermore, the estimation of an extended meta‐regression model that explicitly controls for the idiosyncrasies of transition economies and privatization policies strongly suggested that differences between countries in location, privatization method, and speed of policy implementation strongly influence the link between post‐privatization ownership structure and firm performance. We also found that these factors not only cause a remarkable gap between countries in terms of ex post improvement in firm performance but also significantly affect the interrelationship between foreign investors, domestic outsider owners, and firm managers, and the relative superiority of various domestic outsiders. Conclusive evidence of the harm caused to ex post firm performance by voucher privatization is one of the most noteworthy empirical findings in this paper.     

价值工程理论在岗位设置中的应用研究

如何科学地界定岗位工作内容和工作标准以及合理的薪资等,始终是人力资源管理实践中的难题之一。本文利用价值工程的理论,结合岗位的关键指标和工作标准,并将工作内容及工作标准和企业的经营业绩建立关联,提出了岗位设置中的价值分析过程模型,力求为中小企业的人力资源管理提供一条新思路。     

近代中国国家治理能力的演进:以驿邮转型为例

近代中国驿邮转型以裁驿归邮的形式展开,分为清末与民初两个阶段。清末邮传部推动的裁驿归邮,受到多重条件的制约而未能顺利实现,驿邮关系处于功能上替代、形式上并存的不完全替代状态。邮传部虽未能实现驿邮转型,在与约束条件的博弈选择和互动中,却也推动了邮政的有效增长。民初交通部继承了邮传部驿邮转型事业,通过邮政建设解决了清末裁驿归邮遗留的难题,完成了传统驿传向新式邮政的转型,实现了治理工具保留服务国家治理功能的同时,更多地向公共产品转变。邮传部与交通部面对驿邮转型问题,尽管初衷和政策态度是相近的,缘于约束条件不同,举措各异,效果也不尽相同。邮传部和交通部推动驿邮转型所采取的方式和举措,是清末民初政府职能转变的表现,而这种以政府职能转变为代表的国家治理能力的嬗变亦是近代社会转型进程中国家治理体系和治理能力现代化的体现。     

Money Creation in the Eurozone: An Empirical Assessment of the Endogenous and the Exogenous Money Theories

ABSTRACT

The aim of this paper is to strengthen our understanding of the money creation process in the Eurozone for 1999–2016 period, through an empirical assessment of two main monetary theories, namely the (Post Keynesian) endogenous money theory and the (Monetarist) exogenous money theory. By applying a VAR and VECM methodology, we analyse the causal relationship among monetary reserves (or monetary base), bank deposits and bank loans. Our empirical analysis supports several propositions of the Post Keynesian endogenous money theory since (i) bank loans determine bank deposits, and (ii) bank deposits in turn determine monetary reserves.     

2+1学制下基于PDCA的顶岗实习管理模式研究——以贵州商专旅游系为例

2+1学制已经成为高职教育的发展趋势,贵州商专旅游系所辖专业尤为适用。在调查和总结十余年顶岗实习管理经验的基础上,构建了基于PDCA的高绩效顶岗管理模式。     

后危机时代玉林市涉外经济运行情况跟踪调查与研究：外汇监管视角

美国次贷危机所引发的全球金融危机波及面广,渗透力强,影响度深,我国涉外经济发展受挫。本课题组从外汇监管角度出发,对后危机时代玉林市涉外经济运行情况进行全面的跟踪调查,认真调查分析研究后危机时代涉外经济运行出现的突出问题,积极探索促进涉外经济顺畅发展的新视角、新方法和新举措,努力构筑玉林市涉外经济发展新高地。     

Reweighting South African National Household Survey Data to Create a Consistent Series Over Time: A Cross‐Entropy Estimation Approach

In the absence of established longitudinal panel surveys in South Africa, national cross‐sectional household survey data are frequently used to analyse change. When these data are stacked side by side, however, inconsistencies both in time trends and between household‐ and person‐level data are found. This study uses a new set of weights calibrated to the Actuarial Society of South Africa 2003 model projected totals using a cross‐entropy estimation approach. These weights are favoured because they produce consistent demographic and geographic trends. The calculated weights are similar to the initial sample weights (and hence retain the survey design benefits) but match to a series of age‐sex‐race and province marginal totals that are consistent over time. The weights are publicly available for the 14‐year period between 1994 and 2007.     

Enhancing food security in South Sudan: the role of markets and regional trade

South Sudan faces serious problems of food insecurity due to low levels of domestic food production, periodic droughts, widespread poverty, and since late 2013, renewed armed conflict. This article explores market price behavior using cointegration analysis and estimates the effects of production and trade shocks through multimarket model simulations. We show that market prices in the capital city, Juba, of both maize and sorghum are cointegrated with import parity prices of these cereals sourced from Uganda, consistent with observed trade flows. Model simulations, using econometrically estimated demand parameters, suggest that private sector imports of maize and wheat would greatly mitigate the potential fall in consumption in the case of a decline in domestic cereal production. Other simulations indicate that if total imports of cereals are reduced by one‐third (still more than two times the levels of food aid in 2013) because of disruptions to private market flows, domestic prices of cereals could rise by 45% or more. The article concludes that whatever measures are taken involving national food security reserves, it is crucial that government policy serves to maintain incentives for private sector imports to avoid destabilizing market supplies, domestic prices, and ultimately, food consumption of the poor.