伯克的同一理论对英语阅读教学的启示

近几年以来,外语界越来越重视对英语阅读教学的研究。传统的阅读教学主要从词汇、句子、语篇、图式理论、认知等角度展开,尽管取得了一定成效,但并未从根本上解决传统阅读教学存在的问题。本文主要采用肯尼斯·伯克的同一理论,试图从新的理论角度启迪英语阅读教学,力求创造和谐的阅读氛围,激发学生的阅读兴趣和热情,提高他们的阅读能力。     

LONG-RUN STRUCTURAL MODELLING

The paper develops a general framework for identification, estimation, and hypothesis testing in cointegrated systems when the cointegrating coefficients are subject to (possibly) non-linear and cross-equation restrictions, obtained from economic theory or other relevant a priori information. It provides a proof of the consistency of the quasi maximum likelihood estimators (QMLE), establishes the relative rates of convergence of the QMLE of the short-run and the long-run parameters, and derives their asymptotic distributions; thus generalizing the results already available in the literature for the linear case. The paper also develops tests of the over-identifying (possibly) non-linear restrictions on the cointegrating vectors. The estimation and hypothesis testing procedures are applied to an Almost Ideal Demand System estimated on U.K. quarterly observations. Unlike many other studies of consumer demand this application does not treat relative prices and real per capita expenditures as exogenously given.     

滑动轴承油膜动力特性现场测定技术研究

本文应用时间序列分析及参数识别技术,对于滑动轴承油膜动力特性的现场识别方法进行了研究,提出了转子—轴承系统的简化模型,对于某可倾瓦轴承进行了计算机仿真计算,结果表明在阻尼比较小时,本方法结果与理论值相当一致。     

企业关键智力资本识别的社会网络分析法研究

在知识经济社会环境下,智力资本作为企业的主导生产要素,已经成为企业创造价值和获取竞争优势的重要源泉。如何识别企业智力资本,尤其是对企业实现其战略目标具有重要作用的关键智力资本,是企业智力资本管理不得不面对的重要问题。文章引入社会网络分析法(SNA)识别企业关键智力资本,采用理论研究与案例研究相结合的方法,分析了企业智力资本的动态性和网络属性,对现有企业智力资本识别理论进行了回顾,简要介绍了社会网络分析的理论内涵及其分析方法之一——中心性分析法;从战略分析、智力资本分析、关联分析、矩阵分析等方面构建了基于SNA的企业关键智力资本识别模式;并运用中国企业的实例进行说明。文章在理论上拓展了社会网络分析法的应用范围,同时为企业智力资本管理提供了新的研究思路。     

The Value to the Customer of RFID in Service Applications*

This article examines how customer value may be affected by deploying radio frequency identification (RFID) technologies within service environments. Business articles promote operational cost savings and improved inventory management as key benefits of deploying RFID. In response, service firms are using RFID to reengineer service transactions and customer touchpoints. Customers may view these RFID applications to offer both benefits and drawbacks. This article demonstrates that individuals will recognize far more value from RFID service applications than just cost savings and inventory availability. The article analyzes qualitative survey responses on the value gained from RFID to identify a broad list of value objectives—benefits and drawbacks—associated with RFID service applications. The article contributes to academic literature by providing salient value dimensions for return on investment models of service RFID applications and for future empirical analyses of means‐ends and value‐profit chain models. Managers can use the list of dimensions to develop rich business cases for evaluating the benefits and costs from enhancing service operations with RFID. The identified drawbacks also provide managers with a resource for understanding potential risks of RFID applications.     

On the validity of the indeterminate latent variables in the lisrel model

The language of abstract vector spaces is used to show that the latent variables and errors of the Lisrel model can always be constructed so as to predict any criterion perfectly,including all those that are entirely uncorrelated with the observed variables.     

Comment on “recent developments in bootstrapping time series”

The paper develops a general framework for identification, estimation, and hypothesis testing in cointegrated systems when the cointegrating coefficients are subject to (possibly) non-linear and cross-equation restrictions, obtained from economic theory or other relevant a priori information. It provides a proof of the consistency of the quasi maximum likelihood estimators (QMLE), establishes the relative rates of convergence of the QMLE of the short-run and the long-run parameters, and derives their asymptotic distributions; thus generalizing the results already available in the literature for the linear case. The paper also develops tests of the over-identifying (possibly) non-linear restrictions on the cointegrating vectors. The estimation and hypothesis testing procedures are applied to an Almost Ideal Demand System estimated on U.K. quarterly observations. Unlike many other studies of consumer demand this application does not treat relative prices and real per capita expenditures as exogenously given.     

Bayesian Identification of Multivariate Autoregressive Processes

Identification is one of the most important stages of a time series analysis. This paper develops a direct Bayesian technique to identify the order of multivariate autoregressive processes. By employing the conditional likelihood function and a matrix normal-Wishart prior density, or Jeffrey' vague prior, the proposed identification technique is based on deriving the exact posterior probability mass function of the model order in a convenient form. Then one may easily evaluate the posterior probabilities of the model order and choose the order that maximizes the posterior mass function to be the suitable order of the time series data being analyzed. Assuming the bivariate autoregressive processes, a numerical study, with different prior mass functions, is carried out to assess the efficiency of the proposed technique. The analysis of the numerical results supports the adequacy of the proposed technique in identifying the orders of multivariate autoregressive processes.     

身份认同与心理错位——基于高校“第二类贫困生”的实证研究

对长沙市高校贫困生群体进行抽样调查,结果发现高校“第二类贫困生”发生了自我认知偏差、态度偏激、行为偏执、人际关系偏离、排斥感趋强等表象特征的心理错位现象。身份认同是影响他们心理错位的一个重要因子。     

服务氛围与一线员工服务绩效:工作压力和组织认同的调节效应研究

在以往服务管理研究领域中,服务氛围在多个层面上对服务产出的促进作用得到了广泛认可.然而,当前较少有文献对这种积极作用发生的权变性予以关注.基于社会交换理论,本文从个体层面上研究了一线员工感知的服务氛围影响服务绩效的作用机制,旨在探讨员工在工作环境中的情感体验(工作压力感和组织认同感)对服务氛围与服务绩效之间关系的调节作用.研究利用我国银行业368名一线服务员工的问卷调查数据验证了所提出的假设,实证结果发现:(1)工作压力感负向调节服务氛围与角色外服务绩效之间的关系;(2)组织认同感对服务氛围与角色内/外绩效的关系均产生正向调节作用;(3)进一步的三项交互(Three-way Intenction)分析还发现:当组织认同感较高时,工作压力对服务氛围与角色外服务绩效之间关系的负向调节作用变弱.