产业结构高级化与经济增长关系实证研究——基于全国、广东省及广州市数据的对比分析

本文构造了一种能有效度量产业结构高级化的指标,并运用它对全国、广东省及广州市1978-2009年产业结构高级化与经济增长的关系进行了分析。结果发现,研究期间三个层次的产业结构高级化水平都得到了极大的提高,也表现出了相同的趋势、特征与路径。从全国到东部发达省份再到东部中心城市,经济增长对产业结构高级化都有推动作用,而产业升级对经济增长的促进作用则只出现在中心城市这一层。     

半导体照明产品检测实验室建设及展望

基于半导体照明灯具的特点,结合目前半导体照明产品检测的实际情况,从光、色、电、寿命及安全性等方面介绍了半导体照明产品检测实验室的建设方案,包括系统的功能、组成、基本的检测原理和方法等。     

双选信道下一种基于混沌交织的FBMC系统

高速移动环境下,无线信道具有时频双选性衰落的特性,使得滤波器组多载波(Filter Bank Multi-carrier,FBMC)系统产生长突发差错。将一种基于Baker映射的混沌交织算法应用在滤波器组多载波系统中,根据混沌密钥对发送数据进行分块和重新排列,按照Baker映射规则完成数据交织。此方法可以将长突发差错变为单突发差错,结合卷积编码能有效地纠正双选信道产生的长突发差错。仿真结果表明,在双选择信道中,基于混沌交织的滤波器组多载波系统误比特率性能优于传统基于块交织的滤波器组多载波系统。     

提高交接计量精度 降低管输原油损耗

介绍了管道输油单位工艺流程和油量计算,通过收、销油参数的对比,分析了标准器具、环境、人员等引起管输原油差量的原因,提出了如何通过采取流量计系数交接、同时加强对收、销油在体积、密度、含水等参数的监督,来提高原油交接计量精度,降低管输原油损耗。     

Ethnic Discrimination in Germany's Labour Market: A Field Experiment

Abstract. This paper studies ethnic discrimination in Germany's labour market with a correspondence test. We send two similar applications to each of 528 advertisements for student internships, one with a Turkish‐sounding and one with a German‐sounding name. A German name raises the average probability of a callback by about 14%. Differential treatment is particularly strong and significant in smaller firms at which the applicant with the German name receives 24% more callbacks. Discrimination disappears when we restrict our sample to applications including reference letters which contain favourable information about the candidate's personality. We interpret this finding as evidence for statistical discrimination.     

Fuzzy Chronic Poverty: A Proposed Response to Measurement Error for Intertemporal Poverty Measurement

A number of chronic poverty measures are now empirically applied to quantify the prevalence and intensity of chronic poverty, vis‐à‐vis transient experiences, using panel data. Welfare trajectories over time are assessed in order to identify the chronically poor and distinguish them from the non‐poor, or the transiently poor, and assess the extent and intensity of intertemporal poverty. We examine the implications of measurement error in the welfare outcome for some popular discontinuous chronic poverty measures, and propose corrections to these measures that seeks to minimize the consequences of measurement error. The approach is based on a novel criterion for the identification of chronic poverty that draws on fuzzy set theory. We illustrate the empirical relevance of the approach with a panel dataset from rural Ethiopia and some simulations.     

‘Whatever it takes’ and the role of Eurozone news

This letter shows that the ‘Whatever it takes’ speech by ECB President Draghi on 26 July 2012 and the ensuing installation of the Outright Monetary Transactions’ framework are associated with a reduction in the domestic and cross-border effect of Eurozone news on absolute yield changes in Eurozone sovereign debt. These results are consistent with the popular view that these actions helped to avoid a collapse of the Eurozone.     

Lies,damned lies and statistics: the accuracy of survey responses

That survey research is error prone is not a new idea and different varieties of non-sampling error have been investigated in the literature as well as consideration being given in many statistics textbooks to the issue of sampling error. The paper here considers research upon corporate environmental reporting. It compares information provided by corporate environmental reports with information that survey respondents claim their organization’s environmental report contains. This enables the accuracy of the claims to be assessed. Consideration is given to two different industries the Water industry and the Energy industry. Errors due to inaccurate reporting by survey respondents are shown to be relatively infrequent and respondents appear just about as likely to claim they report information that they do not, in fact, report as to fail to indicate that they report information that is, in fact, actually reported.     

Diagnostics cannot have much power against general alternatives

Model diagnostics are shown to have little power unless alternative hypotheses can be narrowly defined. For example, the independence of observations cannot be tested against general forms of dependence. Thus, the basic assumptions in regression models cannot be inferred from the data. Equally, the proportionality assumption in proportional-hazards models is not testable. Specification error is a primary source of uncertainty in forecasting, and this uncertainty will be difficult to resolve without external calibration. Model-based causal inference is even more problematic.     

安徽省城乡居民收入与消费关系的协整分析

本文运用协整和误差修正模型,以安徽省1984—2006年的统计资料为样本,构建了城乡居民长短期的收入与消费模型,对城乡居民收入与消费之间的关系进行了分析。结果表明：安徽城乡居民的收入和消费之间各自存在着长期的均衡关系,在人均消费的层面上,城镇居民对于消费增长的支持大于农村居民,农村居民的消费需求还有待提高。