Estimation of interregional input–output table using hybrid algorithm of the RAS method and real-coded genetic algorithm

In this paper, we propose a method for improving the accuracy of the estimation of interregional input–output tables, by combining the RAS method and the real-coded Genetic Algorithm (GA); these are simple representative methods for the estimation of an interregional input–output table. By comparing the performance evaluation results obtained using the proposed method, the RAS method, and Simulated Annealing, we verified that the combination of the genetic algorithm and the RAS method can enhance the estimation accuracy of an interregional input–output table. In addition, performance is further enhanced by adjusting GA parameters.     

企业标准体系表编制的思考与实践

根据多年的研究与实践,针对编制企业标准体系表过程中遇到的问题,论述解决的思路,介绍具体的编制做法,期望能为企业标准体系表的编制有所启示。     

企业生命周期视角下科技型中小企业的融资支持

科技型中小企业正在成为加快经济结构调整,转变经济发展方式的重要载体。然而,目前我国大量科技型中小企业依旧没有摆脱资金困局。结合中小科技企业在生命周期的不同发展阶段的融资需求特点及融资方式选择,政府应该从融资渠道、融资服务等方面加以支持。     

我国寿险公司市场价值评估体系刍议

市场价值评估方法作为一种衡量现代企业整体价值的新型手段逐渐被寿险公司采用,但是在市场价值评估的过程中仍存在一些问题,需要进行改善。本文在借鉴相关文献研究成果的基础上,结合自己的理解和实践,对市场价值评估体系应用以及存在的问题做了进一步的探析。     

Productivity Growth in the Chinese Economy by Industry and the Role of Foreign Capital

I. IntroductionIt is well known that China’s reform and open-up policy initiated in 1978 had an extremelylarge impact on the Chinese economy. This policy represented an about-face against thetraditional self-reconstruction strategy that China had maintained since the founding ofthe people’s Republic in 1949. Although China’s economy temporarily fell into confusionfor a few years after the Tian-an-men incident in 1989, China continued to record high GDPgrowth. Moreover, after Deng Xiao…     

IP电话系统中地址映射表的创建与查询

基于十叉树的存储结构及其查询方法，提出了一种适用于VOIP系统的地址映射表创建方法及其相应的查询算法，并且以提高表的查询效率为目的，设计了地址映射表的数据类型与存储结构。实验表明，采用树形存 储结构构成的地址映射表，其相应的查询算法可以获得较短的耗费时间。     

Longevity and Life‐cycle Savings*

We add health and longevity to a standard model of life‐cycle saving and show that, under plausible assumptions, increases in life expectancy lead to higher savings rates at every age, even when retirement is endogenous. In a stationary population these higher savings rates are offset by increased old age dependency, but during the disequilibrium phase, when longevity is rising, the effect on aggregate savings rates can be substantial. We find empirical support for this effect using a cross‐country panel of national savings rates.     

Corporate payout policy in Australia and a test of the life‐cycle theory

We provide evidence on the frequency and size of payouts by Australian firms, and test whether the life‐cycle theory explains Australian corporate payout policies. Regular dividends remain the most popular mechanism for distributing cash to shareholders, despite a slight decline in the proportion of dividend payers since the relaxation of buyback regulations in 1998. Off‐market share buybacks return the largest amount of cash to shareholders. Dividend paying firms are larger, more profitable and have less growth options that nondividend paying firms. Consistent with the life‐cycle theory, we observe a highly significant relation between the decision to pay regular dividends and the proportion of shareholders’ equity that is earned rather than contributed.     

σ值和DPMO值转换表的质疑、修正与解读

文章从理论上探讨了σ值和DPMO值之间的转换关系,修正了现有的一些书中σ值和DPMO值转换表中的问题,从实践的角度解读了σ值和DPMO值之间的关系。     

Can Industrial Restructuring Significantly Reduce Energy Consumption? Evidence from China

This article uses China’s input–output (I-O) tables in 2002, 2007, and 2012 to estimate the real energy consumption of each sector after the I-O adjustment. The relationship between the sectors is further analyzed using the utility analysis method based on ecological network analysis. The empirical results show that although the traditional energy-intensive industries are the major energy-consuming sectors from a direct energy consumption perspective, large energy consumption by energy-intensive industries is transferred to downstream industries through intermediate products after the I-O adjustment. Specifically, the building industry and service sector are the sectors with the highest real energy consumption. With the upgrading and optimization of the industrial structure, the proportion of energy-intensive sectors in China is declining. However, the development of the service sector and infrastructure construction still requires large intermediate inputs. Thus, industrial restructuring cannot significantly reduce China’s total energy consumption.