论专门用途英语专业教师与通用英语教师教学合作模式

专门用途英语在培养专业人才方面的作用毋庸置疑。通过对专门用途英语教学现状的考察和反思,分析其存在的弊端,提出专门用途英语专业教师与通用英语教师合作的具体模式,指出双方可以在语言描写、交际情景分析、需求分析以及教学大纲编写等五个方面加强合作,以期提高专门用途英语的教学水平;     

孵化互动、专用性人力资本和在孵企业成功毕业

基于合作生产理论,本文以307个新创在孵企业为样本,构建生存模型研究孵化互动介入模式和创业专用性人力资本对在孵企业成功毕业的影响。研究发现,行业专用性人力资本、创业家庭背景促成了创业成功,而创业经历对创业成功没有显著影响。同时,孵化互动在促成在孵企业成功毕业方面的调节作用则表现出很大的异质性:孵化互动模式Ⅳ和Ⅴ对行业专用性人力资本有促进性调节作用,而所有孵化互动模式对家庭背景的存在都有抑制性调节作用,但是孵化互动模式对创业经历没有显著的影响。这说明,对于包含诸多隐性成分的行业专用性知识,孵化器经理的参与意愿和介入频率是影响孵化效果的关键因素;同时,孵化互动部分替代了家庭支持的作用,降低了创业者对家庭的依赖。     

Transaction‐Specific Investments,Relational Norms,and ERP Customer Satisfaction: A Mediation Analysis*

Integrating the perspectives of transaction cost economics, the resource‐based view, and resource dependency theory, this study analyzes the institutional settings of enterprise resource planning (ERP) implementations in China. Specifically, it examines how bilateral transaction‐specific investments (TSIs) and relational governance mechanisms influence customer satisfaction with ERP implementations. The model is empirically tested using data from on‐site interviews with 208 ERP customers in China. The results demonstrate that the effects of vendors’ and customers’ TSIs on customer satisfaction are facilitated by multiple‐stage micromediational chains. The influence of TSIs on customer satisfaction is mediated by relational norms, and the impact of relational norms on customer satisfaction is bridged by perceived service quality and customer trust. Furthermore, the influence of vendors’ TSIs is stronger than the influence of customers’ TSIs. The findings contribute to business research and practice by providing valuable insights into how ERP vendors and customers should strategize TSIs to enhance relationship performance.     

基于吉伯斯样本生成器的向量自回归模型选择

内容提要：向量自回归模型是多元时间序列分析中最常用的方法之一。在建立模型的过程中模型选择是非常重要的一个环节,如果候选模型不是很多时,可以通过比较每个模型的准则值如AIC、AICc、BIC或HQ进行模型选择。可是,当存在大量候选模型时,我们无法一一比较每个模型的准则值。为了解决这个问题,本文提出一个基于吉伯斯样本生成器的向量自回归模型选择方法,结果表明应用该方法能够从大量候选模型中准确、高效地确认准则值最小的模型。     

进入权与组织控制

本文深入讨论了R-Z理论的两个核心概念:进入权和人力资本专用性投资,指出进入权的配置过程伴随着代理人进行专用性投资和委托人持续控制的过程,而组织控制构成了委托人对进入权配置过程进行持续控制的基础。委托人必须借助组织控制限制代理人的讨价还价能力,一个关键途径就是减弱代理人拥有的不对称信息优势。     

准EL算法下ARMAX模型的阶估计

本文给出了一种推广的 BIC 准则,根据对准 EL 算法的估计和对 ARMAX 模型变形后的全项f_(n 1)的估计所得到的有关结果,讨论了一种确定 ARMAX 模型阶数的方法。并给出了在推广的BIC 准则意义下关于 ARMAX 模型阶数的最优估计和阶估计的收敛性。同时,也得到了该模型系数矩阵估计的收敛性和收敛速度。     

Using the Residual White Noise Autoregressive Order Determination Criterion to Identify Unit Roots in Arima Models

We present a simplified form of a univariate identification approach for time series models based on the residual white noise autoregressive order determination criterion and linear estimation methods. We also show how the procedure can be used to identify the degree of differencing necessary to induce stationarity in data. The performance of this approach is also contrasted with Portmanteau tests for detection of white noise residuals and with Dickey-Fuller and Bayesian procedures for detection of unit roots. Simulated and economic data are used to demonstrate the capabilities of the modified approach.     

Simple and Conditional Discrimination and Specific Reinforcement in Teaching Reading: An Intervention Package

The Analysis of Verbal Behavior - This study evaluated an intervention package combining simple and conditional discrimination training and specific reinforcement for each stimulus class in...     

马克思主义中国化的若干思考

马克思主义中国化,是当代中国马克思主义的核心理念之一,也是当前学术研究的前沿问题之一。马克思主义为什么必须实现中国化？何以实现马克思主义的中国化？实现马克思主义中国化的具体路径就是以马克思主义为理论旗帜,这是马克思主义中国化的根本之道。也是马克思主义中国化的必然之路。     

A generalized model of logistic regression for clustered data

This paper proposes a generalized logistic regression model that can account for the correlation among responses on subunits. The subunits may arise as data on multiple observations within an individual. This method generalizes earlier work by Rosner (1984 a,b) and others. Methodological generalizations include: (1) the use of the more general Polya-Eggenberger distribution instead of the beta-binomial distribution to model the correlation structure, so that cases with negative, positive, or zero intraclass correlation can be handled; (2) a stepwise approach; (3) linear and non-linear regression; and, (4) the inclusion of the case of a truncated distribution. The model can accommodate missing data and covariates on the unit and subunit level. The derivative-free simplex algorithm is used to estimate the parameters.

The model is applied to data describing the progression of obstruction in coronary disease where multiple arterial segments are studied for each patient. The correlation in response that may exist for these multiple segments is accounted for in the analyses while attempting to examine associations with individual-specific (e.g., history of diabetes) and segment-specific (e.g., initial percent stenosis) covariates. Analyses were performed on a data set describing 382 patients with unoperated coronary artery disease and two coronary angiograms separated by at least one month and on a data set describing 284 patients undergoing percutaneous transluminal coronary angioplasty and studied by coronary angiograms.