行业标准化对中国进出口贸易的影响研究

以1993~2008年中国钢铁、煤炭、服装、食品加工、家电、机械制造六个行业的行业标准数目为基础,利用面板数据变截据模型分析行业标准化对进出口贸易的总体影响,通过面板数据变系数模型分析行业标准化对其进出口贸易额的影响。结果表明,我国的行业标准化对进出口贸易均存在正面影响,行业标准对钢铁、煤炭行业的进出口及对家电的出口均产生负面影响,对服装、食品加工、机械制造及家电的出口均产生正面影响。     

基于层次分析法的企业循环经济发展模式选择模型研究

首先以企业产权边界、企业间联系两个维度为依据,归纳了企业发展循环经济的五种模式。随后运用层次分析法,在充分考虑了循环经济本身特有的稀缺性、外部性、稳定性、收益性等经济学特性后,提出企业选择循环经济发展模式决策模型。最后通过模型计算分析,指出企业集团循环经济发展模式应该是未来企业推进循环经济理论研究和实践重点。     

企业信息化项目管理对项目成功的影响研究

在企业信息化项目中,项目管理是企业深化改革和提高信息化效益的重要途径。但是项目管理究竟在项目建设中发挥了多大作用,对项目成功起到了怎样的影响,这一直以来都是一个模糊的概念。文章通过问卷调查和结构方程模型具体衡量项目管理对项目成功的影响程度。     

Patterns of poverty among elderly Americans: a latent class Markov model

This article studies poverty persistence and the role of social security programmes on poverty among elderly in the US. We use a Latent Markov model to disentangle unobserved heterogeneity and state dependence. Because of its dynamic nature, unobserved heterogeneity is modelled to vary over time. This allows to capture different latent states of poverty that change over time. Result indicates the existence of three unobserved types evolving over time according to their propensity to be poor. Moreover, a strong persistence in poverty especially for women, individuals living alone and ethnic minorities is found. Finally, the estimates indicate that giving social assistance tends to reduce poverty.     

浅析现代企业经营管理模式的规范化

随着我国经济的快速发展,现代企业的经济管理模式的规范化越来越受到众多企业的极大重视。因为,现代企业必须实施科学规范的经济管理模式,通过对企业的经济管理活动进行计划、组织、控制等,促企业经济效益的最大化。     

数字创意产业的区域生态环境——一个简单模型与案例研究

作为一种在全新生产要素决定下,以自身特有的增长规律兴起的新型产业,数字创意产业发展需要新的生态环境支持。本文以PEST模型为基础,以数字创意产业生态特性为依据,构建数字创意产业生态环境的C-PEST模型,并以北京市石景山区为案例,提出了培育和完善数字创意产业生态环境的政策建议。     

我国高技术服务业研发机构科技创新效率评价

构建了高技术服务业研发机构科技创新效率评价指标体系。利用2010—2011年我国高技术服务业7个细分行业研发机构的科技创新活动数据,运用数据包络分析法,测度了2010—2011年我国高技术服务业7个细分行业研发机构的科技创新效率,比较了各细分行业研发机构的科技创新效率差异,并分析其原因。进而利用理想点模型,对2010—2011年我国高技术服务业研发机构的科技创新效率进行了排名。研究结果显示:我国高技术服务业研发机构的科技创新效率总体良好,但行业差异较大。最后,提出促进我国高技术服务业发展的对策建议。     

International human resource management in the introductory HRM course

This paper explores the extent to which students in the introductory HRM course in US institutions are likely to be exposed to information on international and cross-cultural aspects of HRM. Two methods are used: (1) an analysis of international content in fifteen popular introductory HRM textbooks and (2) a survey of professors teaching introductory HRM. The vast majority of responding instructors said their classes got some exposure to international issues in HRM, and most introductory texts included some relevant content. Critiques of international boxed features and dedicated IHRM chapters are provided, and suggestions for improving the quality and depth of IHRM content in introductory textbooks are made.     

Value at risk forecasting for volatility index

Forecasts of values at risk (VaRs) are made for volatility indices such as the VIX for the US S&P 500 index, the VKOSPI for the KOSPI (Korea Stock Price Index) and the OVX (oil volatility index) for crude oil funds, which is the first in the literature. In the forecasts, dominant features of the volatility indices are addressed: long memory, conditional heteroscedasticity, asymmetry and fat-tails. An out-of-sample comparison of the VaR forecasts is made in terms of violation probabilities, showing better performance of the proposed method than several competing methods which consider the features differently from ours. The proposed method is composed of heterogeneous autoregressive model for the mean, GARCH model for the volatility and skew-t distribution for the error.