Status of regional recycling economy and comparative analysis ——Taking Tianjin, Beijing and Shanghai as example

The purpose of this paper is to evaluate and comparatively analyze the developing status of regional recycling economy, and then make a few suggestions to the problems that exist in developing recycling economy through the evaluation system of recycling economy.     

REGIONAL GDP IN BRITAIN, 1871–1911: SOME ESTIMATES

The paper builds on a method proposed by Geary and Stark for estimating regional incomes in Victorian Britain. This is modified by using tax data to allocate non‐wage income across regions. The results suggest that the coefficient of variation of regional GDP per head was rising rapidly prior to World War I in similar fashion to the late 20th century such that its level in 1901 and 2001 was about the same. In both episodes of globalization there were big winners and big losers among British regions.     

标准化与矿产资源循环利用问题探讨

文章阐述了循环经济及循环经济的三个基本原则 (“3R原则”) ,论证了循环经济与传统经济的区别以及标准化在循环经济中的重要作用 ,提出了通过加强标准化工作 ,进一步推进循环经济发展的一些建议和相关的措施。如加快法规体系建设、采用国际标准和国外先进标准、加强标准化工作、信息化网络化建设等     

Spatial dimensions of precision agriculture: a spatial econometric analysis of millet yield on Sahelian coversands

The identification of local soil variability caused by within‐field differences of macronutrients and ecological features is of paramount importance for the effectiveness of precision agriculture. We present several spatial statistical and econometric techniques to capture local differences in soil variation, ecological characteristics, and yield more effectively than the analytical techniques traditionally used in agronomy. The application of these techniques is illustrated in a case study dealing with precision agriculture in the West African Sahel. The production of millet on acid sandy soils constitutes a typical example of low soil fertility areas exhibiting small absolute but large relative differences in crop production conditions over short distances.     

银行间债券市场7天回购利率影响因素的实证分析

我国银行间债券市场7天回购交易品种成交量大、交易活跃、参与机构多，其回购利率R07D也成为货币市场短期利率的重要基准。本文从资金面和政策面两个角度出发选取了若干R07D利率的影响因素，对从2001年1月至2006年6月的数据，运用协整、格兰杰因果检验、回归等计量方法进行实证分析，结果显示：央行票据发行利率、超额准备金利率、M2同比增长率、商业银行存贷比与R07D利率存在着长期的协整关系，是R07D利率变动的原因。     

Efficiency, subsidies, and environmental adaptation of animal farming under CAP

The purpose of this article is to model the interaction between the targets of the current Comman Agriculture Politic (CAP): environmental adaptation, subsidies, and efficiency of animal farming. To this end we first have to identify the production frontier and relative efficiency level for each animal‐oriented farm in the sample. The production frontier and efficiency index for each type of farm (assuming no specific production functions) are identified using Data Envelope Analysis (DEA) techniques. We then address the relationship between relative efficiency, farm size, and environmentally friendly behavior by carrying out a nonparametric regression of efficiency, on economic size, a proxy for the degree of environmental appropriateness, and regional dummies. Calculations of the efficiency of the farms including direct subsidies are compared with the counterfactual exercise in the case in which direct subsidies are not considered. Finally, we look for relations between subsidies and factors such as farm size, efficiency, and environmentally friendly behavior. One key result shows that, on average direct payments generally tend to increase efficiency. However, in most of the cases the mean efficiency decreases as the percentage of direct payments rises. Direct payments are found to be positively related to environmentally friendly production, at least in Germany. However, in general, the direct payment system is not sufficient to offset the fact that the less environmentally friendly farms as well as the larger farms are more efficient.     

House prices, non-fundamental components and interstate spillovers: The Australian experience

Using Australian capital city data from 1984Q3--2008Q2, this paper utilizes a dynamic present value model within a VAR framework to construct time series of house prices depicting what aggregate house prices should be given expectations of future real disposable income - the “fundamental price” - and continues by comparing capital city fundamental prices with actual prices. The extent to which revealed capital city “non-fundamental” components spillover from state to state, as well as their long-term impact is also investigated. Results provide evidence of periods of sustained deviations of house prices from values warranted by income for all state capitals with the greatest deviations arising in the NSW market and starting around 2000. In general NSW is relatively more susceptible to spillovers transmitted from other states while ACT and WA are most isolated from the rest of the country.     

我国基金风格资产收益长记忆性分析——基于修正R/S方法的研究

证券市场是个典型的非线性复杂系统。本文运用修正R/S分析法对我国基金风格资产收益单一分形的基本统计特征进行检验,并与经典R/S方法进行对比分析。研究结果表明:在日、周、月等三种时间标度下Hurst指数均显著大于0.5,表现为持久相关性特征,说明股市风格具有长记忆性;从经典R/S分析结果看,我国股市风格具有显著的分形结构特征,风格资产指数收益率序列具有长记忆性,不同风格资产的业绩具有不同的周期性。     

大型研发企业的研发投入分析——基于全球前2000家企业研发投入数据

利用2006年全球研发投入居前2000位的企业数据,考察了这些企业研发投入的一些基本特征,如产业分布、国家分布,以及研发的集中度,并探讨了企业研发投入与企业规模之间的关系。研究结论是：研发具有产业异质性;研发在一些国家集中;企业研发的总量水平、研发比率、研发增长率与企业规模具有非线性关系．中型企业具有较高的研发投入量,而小型企业与大型企业具有较高有研发投入比,以及研发增长率。     

Brain drain or brain bank? The impact of skilled emigration on poor-country innovation

The development prospects of a poor country or region depend in part on its capacity for innovation. In turn, the productivity of its innovators, whom are often concentrated around urban centers, depends on their access to technological knowledge. The emigration of highly skilled individuals weakens local knowledge networks (brain drain) but may also help remaining innovators access valuable knowledge accumulated abroad (brain bank). We develop a model in which the size of the optimal innovator Diaspora depends on the competing strengths of co-location and Diaspora effects for accessing knowledge. Then, using patent citation data associated with inventions from India, we estimate the key co-location and Diaspora parameters. The net effect of innovator emigration is to harm domestic knowledge access, on average. However, knowledge access conferred by the Diaspora is particularly valuable in the production of India’s most important inventions as measured by citations received. Thus, our findings imply that the optimal emigration level may depend, at least partly, on the relative value resulting from the most cited compared to average inventions.