Semiparametric estimation of moment condition models with weakly dependent data

This paper develops the asymptotic theory for the estimation of smooth semiparametric generalized estimating equations models with weakly dependent data. The paper proposes new estimation methods based on smoothed two-step versions of the generalised method of moments and generalised empirical likelihood methods. An important aspect of the paper is that it allows the first-step estimation to have an effect on the asymptotic variances of the second-step estimators and explicitly characterises this effect for the empirically relevant case of the so-called generated regressors. The results of the paper are illustrated with a partially linear model that has not been previously considered in the literature. The proofs of the results utilise a new uniform strong law of large numbers and a new central limit theorem for U-statistics with varying kernels that are of independent interest.     

Inference for low- and high-dimensional inhomogeneous Gibbs point processes

Gibbs point processes (GPPs) constitute a large and flexible class of spatial point processes with explicit dependence between the points. They can model attractive as well as repulsive point patterns. Feature selection procedures are an important topic in high-dimensional statistical modeling. In this paper, a composite likelihood (in particular pseudo-likelihood) approach regularized with convex and nonconvex penalty functions is proposed to handle statistical inference for possibly high-dimensional inhomogeneous GPPs. We particularly investigate the setting where the number of covariates diverges as the domain of observation increases. Under some conditions provided on the spatial GPP and on penalty functions, we show that the oracle property, consistency and asymptotic normality hold. Our results also cover the low-dimensional case which fills a large gap in the literature. Through simulation experiments, we validate our theoretical results and finally, an application to a tropical forestry dataset illustrates the use of the proposed approach.     

中国加入WTO十年银行业竞争力提升分析

以1995-2011年中国工、农、中、建四大国有商业银行和招商、民生等十家股份制商业银行的原始数据为样本,从各银行的资源状况、盈利能力、风险管理能力、资产流动能力和持续发展能力五个方面来评估中国银行业在加入WTO十年后的竞争力提升情况,在此基础上得出导致中国银行业竞争力变化的可能原因为金融深化程度进一步提高,金融体制改革完善了监管体系,金融基础设施明显改善以及国有商业银行初步奠定了现代公司治理基础。     

Intel96单片机可控硅触发控制系统在电机软启动中的应用

本文介绍了Ｉｎｔｅｌ９６ 系列单片机为核心组成的可控硅触发控制系统,以异步电动机软启动为例分析了用单片机实现的六相及多相可控硅触发脉冲的分配方法和控制方法,给出了可控硅触发控制系统的软硬件结构     

An Exploratory Study of the Impact of e‐Service Process on Online Customer Satisfaction

Although extensive academic research has examined the dynamics of interpersonal interactions between service providers and customers, much less research has investigated customer service encounters through technological interfaces such as the Web in electronic commerce transactions. Corporate websites have become an important point of contact with customers for many companies. Service has been described as one of the most important attributes for online business to influence traffic and sales. However, more research is needed to understand how Web‐based technological capabilities of services affect customer satisfaction. In this paper, we propose viewing the interface between online buyers and sellers through the lens of service management to identify possible determinants of online customer satisfaction. A company's website is considered its electronic service delivery system. We look at this electronic service delivery system from its process point of view. Our findings indicate that as the electronic service delivery system process improves, a customer's perception of the website's ease of use increases, leading to increased service value and perceived control over the process, which increases customer satisfaction. The research provides evidence that the technological capabilities embedded in the website processes are an important factor in determining service quality and ultimately online customer satisfaction.     

The Impact of Deviations from Desired Hours of Work on the Life Satisfaction of Employees

We estimate an ordinal logistic multilevel model to examine the determinants of the life satisfaction of employees in Europe. Data drawn from the European social survey reveals that deviations from desired hours of work (measured as the absolute difference between the actual and preferred weekly number of hours) reduce overall life satisfaction, but the effect is smaller in countries with higher unemployment rates. We interpret this finding as evidence that in environments where anxieties about job security are high, having a job brings about a certain level of life satisfaction regardless of the gap between the actual and preferred time spent in the labor market. We also find no statistically significant difference between male and female employees with regard to the impact of the work hours mismatch. This finding suggests that the gender differences which would have been expected in this context are already incorporated in the respondents’ subjectively determined desired hours of work. In fact, further examinations confirm that ‘desired hours’ are associated with both socio-demographic characteristics (in particular, gender) and preferences for labor market work.     

裕固族乡村社区发展历程与模式的社会人类学分析

裕固族是中国人口较少民族之一,其乡村社区发展历程在西北少数民族社区发展历程中有一定的代表性。在田野调查所获资料的基础上,本文对裕固族乡村社区发展历程与模式进行了社会人类学的描述与分析,并指出裕固族乡村社区发展模式从政府主导型到乡民自主型的转型势在必行。     

Economic Freedom and Economic Growth in South East Europe

Economic freedom, understood as absence of barriers for business entry, business operations and business exit, is a source of economic development. Its impact is indirect: through institutions framework creation and environment that encourages economic development. Primarily, economic freedoms are a reflection of institutional arrangement, which makes business operations and the realization of business ideas easier for entrepreneurs and managers, who are two extremely important groups for economic development. The aim of the paper is to present empirical analysis of interrelation between economic freedom and economic development, expressed through several indicators, such as gross domestic product, income per capita, foreign direct investment per capita.     

明代鄂尔多斯库图克台·彻辰·洪·台吉远征图伯特所到的"锡里木济三河交汇之地"考述

<蒙古源流>中有段记载,明代蒙古族鄂尔多斯部的库图克台彻展洪台吉引兵图伯特(吐蕃),曾到达"锡里木济三河交汇之地",但锡里木济三河交汇之地究竞在何处,一直没有具体的考证结论.而此地作为藏族地区,在藏传佛教传入蒙古的过程中曾起过非常重要的作用,因此,查明这个地区的地望,对于研究藏族历史、蒙古族历史以及蒙藏关系史等都有重要的学术价值.本文从历史文献资料入手,对"锡里木济三河交汇之地"的地望作了初步的考查,认为"锡里木济三河交汇之地"当在今天青海省大通县境内,即宝库、黑林和东峡三河交汇的地方.