中国非正规部门指数的设计与测算——兼论非正规部门与经济增长关系

文章基于2008版国民经济核算体系新框架,利用统计指数理论和综合评价技术从投资、消费、就业、金融四个方面设计并测算我国非正规部门指数。在此基础上,探讨了非正规部门与经济增长的内在联系。研究结果显示,我国非正规部门年均增长快于同期经济增长;非正规部门的"低抗风险性、低政府规制"的特征增加了非正规部门增长的不稳定性;非正规部门与经济增长之间存在协整关系,不论从长期还是短期看,当期非正规部门与经济增长均存在正向关系,但影响程度较弱。     

The Effectiveness of Technical Trading for Arab Stocks

In this paper, we examine the profitability of technical analysis for a cross section of individual Arab stocks. Our analysis, undertaken from the perspective of an Islamic investor, reveals that technical trading rules do not yield economically or statistically significant returns. While our results uncover some scant statistical evidence of technical trading rule profitability, risk adjusting the returns weakens the evidence in favor of predictability. Furthermore, break-even transaction costs do not exceed estimated transaction costs or bid-ask spreads in the markets examined.     

水利建设市场主体信用评价指标体系改进——以施工单位为例

针对现行水利建设市场主体信用评价指标体系,以施工单位为例,在比较分析已有信用评价结果的基础上,采用问卷调查统计方法,得到市场主体对现有评价指标的认同度,并分析不同指标认同度差异的原因,进而提出删除门户网站及平台信息、固定资产占总资产比例及施工年产值等认同度低的指标,提高管理层素质、人员素质及管理制度等认同度高的指标的权重。     

Spatial determinants of productivity growth on agri‐food Spanish firms: a comparison between cooperatives and investor‐owned firms

This study analyses the effect of the spatial factor, location, and interaction effects among peer companies, on the productivity growth of agri‐food companies in Spain. With this aim, we build a productivity growth index and apply a multiequational Seemingly Unrelated Regression on a sample of 344 Spanish cooperatives and investor‐owned firms for the period 2010–2012. Our findings show that agri‐food firms are influenced by spatial factors finding interesting differences between cooperatives and investor‐owned firms. With regard to the geographical location, cooperatives in the western of Spain show higher productivity growth rates, whereas investor‐owned firms in the northeast of Spain present better results. The interaction effect among closer peer companies is also a relevant factor to determine the productivity growth in agri‐food companies. This factor is more relevant for cooperatives than for investor‐owned firms.     

村镇建设用地再开发后评估指标体系探讨

研究目的:构建村镇建设用地再开发后评估的指标体系,为村主体、开发企业对村镇建设用地再开发后的自测及行业部门对村镇建设用地再开发后效应的普查提供参考。研究方法:文献分析法,问卷调查法及深度访谈法。研究结果:在考虑利益相关者的诉求、评估客体的特性及再开发后评估原则的基础上,提出目标实现、执行规范、土地利用与管理、经济效益、社会效益及生态效益6大村镇建设用地再开发后评估指标体系参照层和19个分指标,并根据指标的含义确定运算公式,规范村镇建设用地再开发后评估指标体系的运算说明。研究结论:丰富现行土地评估指标体系中此类评估指标体系的空白,并能较好地反映村镇建设用地再开发后的实施状况,为村镇建设用地再开发验收、综合效应评价及相关指引性文件制定提供技术支持。     

基于GIS的辽宁省可利用土地资源综合评价

基于GIS手段,根据《省级主体功能区划分技术规程》的技术方法,结合辽宁省的实际情况对《规程》做出一定的改进,以辽宁省各县市区为基本评价单元,借助1km^2动态网格进行地形分析并提取各类土地利用类型的面积,以可利用土地资源和人均可利用土地资源为基础、土地利用综合程度指数为依据进行评价,为辽宁省主体功能区定位提供重要依据。     

建筑工程施工质量评价标准探讨

由于中国地域面积大,建筑市场很大,就造成了各地执行的标准不一,有的地域建筑技术比较落后,管理还很不规范.建筑商和承包商为了自身的利益,采取各种手段,使不合格建筑进入市场.因此,建筑工程施工质量评价标准就显得格外重要.本文主要是对建筑工程施工质量评价标准的具体做法进行了探讨,希望能为相关人士提供参考.     

黑龙江森工林区现代化发展评价

通过借鉴区域现代化和林业现代化以及可持续发展的指标体系,设计国有林区现代化发展特殊的评价指标体系,对黑龙江森工国有林区现代化发展水平进行实证分析。黑龙江森工林区仍处于现代化的前期,制约林区现代化的因素主要是经济和社会两个方面,针对制约因素,提出推进林区现代化进程的建议。     

Analyzing the welfare‐improving potential of land in the former homelands of South Africa

This article contributes to the debate on the role of land in reducing poverty in rural South Africa. It uses the year of arrival in the former homelands as an instrument for land access and size. This identification strategy is based on the fact that African households were forcibly relocated to the homelands during the apartheid. Due to increasing population pressure, later arrivals were less likely to be assigned land. The results show that land has a large positive effect on household welfare. Because the homelands are relatively disadvantaged areas, these results provide a lower bound for the positive effects of land on household welfare.     

On the Opportunity Cost of Crop Diversification

Distance functions are increasingly being augmented, with environmental goods treated as conventional outputs. A common approach to evaluate the opportunity cost of providing an environmental good is the exploitation of the distance function's dual relationship to the value function. This implies that the opportunity cost is assumed to be non‐negative. This approach also requires a convex technology set. Focusing on crop diversification for a balanced sample of 44 cereal farms in the East of England for the years 2007–2013, this paper develops a novel opportunity cost measure that does not depend on these strong assumptions. We find that the opportunity cost of crop diversification is negative for most farms.