A robust procedure for testing an assumed value of the population correlation coefficient

For testing that the population correlations coefficientp Q, Tiku and Balakrishnan1986) developed a robust test. This test is extended here to situcitions where one wants to test that p p , p being a specified non-zero value of p. o o     

Dependence function for continuous bivariate densities

The notion of cross-product ratio for discrete two-way contingency table is extended to the case of continuous bivariate densities. This results in the “local dependence function” that measues the margin-free dependence between bivariate random variables. Properties and examples of the dependence function are discussed. The bivariate normal density plays a special role since it has constant dependence. Continuous bivariate densities can be constructed by specifying the dependence function along with two marginals in analogy to the construction of two-way contingency tables given marginals and patterns of interaction. The dependence function provides a partial ordering on bivariate dependence.     

从语篇功能看近代以来被字句的发展

近代以来,被字句的使用范围有所扩大,突破了遭受义的范围,不断向中性义和受益义发展。从语篇功能的角度出发,可以发现篇章连贯的需要是促使被字句发展的语言内部动因。而当下日新月异的网络社会下,传统被字句受到干扰,遭受义又重新被强化。     

Balanced and partially balanced incomplete block designs with autocorrelation errors

The paper aims to find variance balanced and variance partially balanced incomplete block designs when observations within blocks are autocorrelated and we call them BIBAC and PBIBAC designs. Orthogonal arrays of type I and type II when used as BIBAC designs have smaller average variance of elementary contrasts of treatment effects compared to the corresponding Balanced Incomplete Block (BIB) designs with homoscedastic, uncorrelated errors. The relative efficiency of BIB designs compared to BIBAC designs depends on the block size k and the autocorrelation ρ and is independent of the number of treatments. Further this relative efficiency increases with increasing k. Partially balanced incomplete block designs with autocorrelated errors are introduced using partially balanced incomplete block designs and orthogonal arrays of type I and type II.     

C2C卖家的诚信行为模式及其动态性研究

现有电子商务的信用评价体系单一维度的特点使得评级体系难以准确衡量、比较店铺在各维度之间的差异及其变化。为了提高C2C电子商务信用评级体系的信息揭示作用,本文试图从多维度指标分析店铺的诚信行为模式及其动态性。本文对淘宝7大行业不同信用等级的卖家的诚信指标数据进行聚类分析表明,店铺在动态评分、信用等级、好评率上分别具有六类不同的静态组合特征,信用积分在解释店铺诚信状态上弱于动态评分和好评率指标。动态模式分析表明,店铺的好评率、动态评分指标及其与同业行业比值会呈现出三个不同的组合变化趋势。最后本文提出对现有的评价体系改进,以体现店铺之间在模式上的差异,从而真实展现卖家的诚信水平。     

中国C2C交易市场电子服务质量对顾客忠诚的影响——以顾客满意和顾客价值为中介变量

通过构建整合性的理论研究模型，揭示了C2C交易市场电子服务质量、顾客满意、顾客价值以及顾客忠诚之间相互作用的机理。并对中国具有C2C网上购物经验的用户进行问卷调查，建立结构方程模型，采用验证性因子分析法实证检验研究假设。研究结果发现：（1）C2C网站的电子服务质量对顾客满意和顾客价值产生显著的正向影响；（2）C2C卖家的电子服务质量对顾客满意产生显著的正向影响，对顾客价值的影响不显著；（3）顾客满意和顾客价值都对顾客忠诚产生显著的正向影响；（4）确认了顾客满意和顾客价值在C2C交易市场电子服务质量和顾客忠诚之间的中介效应。根据研究结论对C2C交易网站和网上卖家提高电子服务质量和顾客忠诚提出一些富有决策指导意义的对策和建议。     

Using simulation methods for bayesian econometric models: inference,development and communication: some comments

We extend the average derivatives estimator to the case of functionally dependent regressors. We show that the proposed estimator is consistent and has a limiting normal distribution. A consistent covariance matrix estimator for the proposed estimator is provided.     

面向留学生的汉字书法教学刍议

有针对性的汉字书法教学能提高留学生对汉字的认识、记忆和书写能力。面向留学生的汉字书法教学需注意教学内容、教学方法与学习方法。     

淘宝网C2C交易市场的运营措施分析

我国的C2C电子商务交易市场已进入寡头垄断时期，呈现出“三强纷争、淘宝独大”的局面。淘宝网的市场决策将引领和决定这个市场的未来发展方向，对此加以研究分析意义深刻。     

东西相遇：中德双校园学习差异性比较分析——基于Z大学中德合作2＋3项目学生的访谈

在对Z大学中德合作2＋3项目留德学生访谈的基础上，以差异性分析为视角，从教学组织、专业学习和校园生活三个纬度，分析了项目学生对两校园学习的差异性体验，并从文化价值、教育体制、教育投入方面探究其原因，提出了强化国际合作、提升师资能力水平、加大工程实训领域投入等对策。