Serial and spatial error correlation

This paper demonstrates that jointly modeling serial and spatial error correlation results in a trade-off between the serial and spatial autocorrelation coefficients. Ignoring this trade-off causes inefficiency and may lead to nonstationarity.     

我国西部地区贸易对环境污染影响的分析——基于西部地区省际面板数据的检验

选取2000-2008年西部地区十一个省、直辖市和自治区的贸易与环境相关数据,利用面板数据模型对西部地区贸易对环境污染的影响进行实证分析,研究结果表明规模效应和贸易开放度的增加加剧了西部地区的环境污染,结构效应和环境政策则减少了西部地区的环境污染,而技术效应对西部地区环境污染的影响不显著。     

Sample attrition in the RLMS, 2001–10

The data of the Russian Longitudinal Monitoring Survey (RLMS) – Higher School of Economics represents one of the few nationally representative sources of household and individual data for Russia. These data have been collected since 1992 and in recent years, thanks to more secure financial and logistical support, have become a resource increasingly drawn upon by scholars and students for national and cross-national studies. In this paper, we examine the extent of non-random attrition in the RLMS and discuss the circumstances under which this might give rise to biases in econometric analysis. We illustrate this with an example drawn from the health sphere.     

数据挖掘技术在企业薪酬设针中的应用研究

现代企业薪酬设计过程中要面对数量众多、关系复杂的信息和数据,而数据挖掘技术在有效处理大量数据方面具有独特的优势。本文以薪酬设计中的数据分析过程为主线,探讨如何应用分类、聚类以及关联规则等数据挖掘技术来分析和处理数据,为薪酬设计提供强有力的决策支持。     

经济新常态下金融包容与产业结构转型——基于中国省级面板数据的分析

在经济新常态背景下,产业结构面临重大调整,金融包容的融入,使中小企业或个人能够获得价格合理、方便快捷的金融资源,扶持创业创新发展,形成新的增长动力。本文基于1995～2012年中国31个省市的相关数据,运用面板数据模型和分位数回归方法,深入探讨金融包容对产业结构转型的影响。结果表明,金融包容与产业结构转型具有显著的正向关系,并且在不同分位点上金融包容水平对产业结构转型表现出较强的解释力,随着产业结构向高级化发展,金融包容在产业结构转型升级中的作用逐步凸显。经济增长、教育发展、财政支出规模和城市化水平均对产业结构转型具有促进作用,而过多的物质资本投入不利于产业结构转型。     

人体下肢运动能力测评研究

人体在短距离奔跑及跳跃时,足底压力的大小并不仅仅和体重相关,还反映了下肢运动能力的强弱。为了能够客观评价下肢的运动能力,设计了一套测试系统。采用压力传感器对足底压力进行测量,数据通过单片射频收发器件NRF24L01无线模块传输到微机中,记录下不同测试条件下的压力峰值。实验采集了12位测试者在慢走、快跑时的足底压力,分析了足底压力峰值与体重之间的关系。结果表明:压力峰值与体重的比值较小的人,下肢运动能力较弱一些;压力峰值与体重的比值较大的人,下肢运动能力较强一些。根据测评结果,可对人们的身体素质提升提出相关建议,对处于成长期的青少年尤为重要。     

Financial components of FDI and choice of capital structure: an analysis for 30 OECD countries

Even though the choice of capital structure depends on the three different financial components of foreign direct investment (FDI), previous research has regarded FDI as unidimensional rather than multidimensional. This study addresses new findings in the FDI area and investigates the relevant determinants of capital structure in 30 OECD countries from 2006 to 2014 within the framework of a simultaneous equation model. Our primary findings reveal that each component has its own deterministic features driven by relevant policy variables and risks in the market. While an increase or decrease in equity capital shows the ability of the host country to attract new investments, the subsequent components are mostly used to adjust the equity capital investment exposure.     

Firm heterogeneity and immigrant wage assimilation

This article investigates the role of job mobility in immigrant wage assimilation. I use longitudinal linked employer–employee data for Portugal to estimate the immigrant wage catch-up in log wage regressions with both individual and firm fixed effects. I show that moving to firms with higher wage premiums accounts for approximately 30% of the immigrant wage catch-up in the first years.     

国土资源数据整合方案设计及其实现研究

研究目的：基于国土资源数据现状,提出有效整合方案,为国土资源信息化建设提供借鉴。研究方法：以ETL技术框架为基础,结合数据挖掘技术和GIS技术,设计符合国土资源数据整合要求的解决方案,并以常州市为例进行实证研究。研究结果：数据整合方案有效快捷地解决了常州市国土资源数据整合。研究结论：方案智能化提高了数据整合过程的数据分析能力、处理能力和效率,有效地从国土资源数据本身解决了整合难题,对市县级国土资源数据整合有借鉴意义。