基于时变Copula的我国股票市场联动性研究

通过运用Copula技术,构建4种Copula-GARCH模型,讨论金融市场的相关模式问题得出的结论是Joe-ClaytonCopula比正态Copula好,动态模型比静态模型要好。表明沪港股市确实存在非对称的相关变化规律。同时表明沪、港股票市场股市相关程度较小,两个市场联动性较弱,上海股市的波动具有相对的独立性,通过组合上海股市和香港股市的方式可以较好的降低投资风险。     

现阶段我国城乡居民收入差距的实证分析

1985-2010年,我国城乡居民在收入增长的同时,也出现了收入差距问题。从收入差额看,城镇居民人均可支配收入的增长幅度远远大于农村居民人均纯收入的增长幅度,城乡居民收入差距的绝对数一直在扩大。从收入比看,我国城乡居民收入差距的相对数具有＂扩大→缩小→扩大＂的变动特征,总体上呈现出波动中不断扩大的趋势。     

基于因子分析法的安徽物流能力的研究分析

利用因子分析对安徽各市进行数据整体分析,并建立指标体系得出：安徽区域物流能力综合排名靠前的五个市分别是合肥、芜湖、铜陵、马鞍山、蚌埠,他们都是安徽经济发达的区域,这也证明了区域物流能力的强弱与经济发展有着很大的正相关关系,起着相互促进的作用。安徽省获批唯一以产业转移为主题的区域发展规划,应以此为契机,提高安徽各市的区域物流能力。     

陕西省能源消费碳排放分析

通过分析1995—2009年陕西省三大产业能源碳排放总量及六大部门碳排放变化情况,以及该段期间内产业结构、经济规模与能源结构三大因素对能源消费碳排放的影响,从中发现,经济规模效应、产业结构效应是正向决定性因素,能源结构效应是负向决定性因素。陕西省应调整能源结构,在进一步提高天然气和电力等低碳能源在能源结构中的使用比例的同时,必须发展其他形式的能源;调整产业结构,促进低碳绿色产业发展,一方面,政府应当利用经济手段和行政手段,限制高碳产业的发展,另一方面,运用适当的财政政策引导、鼓励和扶持低碳产业的发展和绿色产品的开发,从而促进产业竞争力的提高,减轻传统产业的锁定效应。     

Investigating the gap between citizens' sustainability attitudes and food purchasing behaviour: empirical evidence from Brazilian pork consumers

Consumers worldwide are increasingly concerned with sustainable production and consumption. Recently, a comprehensive study ranked 17 countries in regard to their environmentally friendly behaviour among consumers. Brazil was one of the top countries in the list. Yet, several studies highlight significant differences between consumers' intentions to consume ethically, and their actual purchase behaviour: the so‐called ‘Attitude‐Behaviour Gap’. In developing countries, few studies have been conducted on this issue. The objective of this study is therefore to investigate the gap between citizens' sustainability‐related attitudes and food purchasing behaviour using empirical data from Brazil. To this end, Brazilian citizens' attitudes towards pig production systems were mapped through conjoint analysis and their coexistence with relevant pork product‐related purchasing behaviour of consumers was investigated through cluster analysis. The conjoint experiment was carried out with empirical data collected from 475 respondents surveyed in the South and Center‐West regions of Brazil. The results of the conjoint analysis were used for a subsequent cluster analysis in order to identify clusters of Brazilian citizens with diversified attitudes towards pig production systems, using socio‐demographics, attitudes towards sustainability‐related themes that are expected to influence the way they evaluate pig production systems, and consumption frequency of various pork products as clusters' background information. Three clusters were identified as ‘indifferent’, ‘environmental conscious’ and ‘sustainability‐oriented’ citizens. Although attitudes towards environment and nature had indeed an influence on citizens' specific attitudes towards pig farming at the cluster level, the relationship between ‘citizenship’ and consumption behaviour was found to be weak. This finding is similar to previous research conducted with European consumers: what people (in their role of citizens) think about pig production systems does not appear to significantly influence their pork consumption choices. Improvements in the integrated management of this chain would better meet consumers' sustainability‐related expectations towards pig production systems.     

低碳经济约束下区域经济可持续发展研究——以安徽省为例

首先基于投入产出分析法,运用影响力系数和感应度系数,分析了安徽省各行业的产业关联效应及其时国民经济的促进作用;其次通过安徽省各行业能源利用强度的测算,结合投入产出分析法的结果,提出了节能降耗约束下实现安徽省经济可持续发展的产业层次可选择的思路。     

零件外观认可及整车外观一致性评审在汽车开发中的应用

文章阐述了汽车开发中零件的外观认可流程,主要包括皮纹前认可、皮纹后认可、外观质量评审及整车外观一致性评审在汽车行业中的应用,并介绍了各阶段外观认可的交样要求和评价方法。     

高压输电线路故障测距算法综述

高压输电线路故障定位的准确性对电网的稳定运行有着非常重要的意义。文章对高压输电线路现有的各种测距方法进行了归纳总结和研究分析,并评述了各自的优点和不足。     

基于主成分分析法的员工工作满意度分析

针对A企业的员工工作满意度进行了问卷调查,并运用统计学的主成分分析法和层次分析法对问卷回收的相关数据进行分析。结果表明:①A企业员工对其个人发展前景感到满意的比重高于对企业发展前景、工作环境以及收入分配感到满意的比重;②A企业员工对工作感到基本满意的比重只有一半左右。这说明A企业在创造更好的工作条件来提高员工的满意度方面还有很长的路要走。     

双连拱隧道防排水技术分析与研究

双连拱隧道渗漏水是连拱隧道施工中最常见的问题,文章以张家湾双连拱隧道为例,对双连拱隧道渗漏水原因进行分析,并提出凸顶式中隔墙隧道防排水的改进结构和施工工艺,以及双连拱隧道防排水的要点和解决方法。