Testing the Goodness of Fit of Parametric Regression Models with Random Toeplitz Forms

ABSTRACT: We introduce a class of Toeplitz‐band matrices for simple goodness of fit tests for parametric regression models. For a given length r of the band matrix the asymptotic optimal solution is derived. Asymptotic normality of the corresponding test statistic is established under a fixed and random design assumption as well as for linear and non‐linear models, respectively. This allows testing at any parametric assumption as well as the computation of confidence intervals for a quadratic measure of discrepancy between the parametric model and the true signal g;. Furthermore, the connection between testing the parametric goodness of fit and estimating the error variance is highlighted. As a by‐product we obtain a much simpler proof of a result of 34 ) concerning the optimality of an estimator for the variance. Our results unify and generalize recent results by 9 ) and 15 , 16 ) in several directions. Extensions to multivariate predictors and unbounded signals are discussed. A simulation study shows that a simple jacknife correction of the proposed test statistics leads to reasonable finite sample approximations.     

国内外战略联盟理论研究的演变及我国的差距分析

本文从国外战略联盟理论的演变出发,将国外战略联盟理论分为早期传统联盟理论研究阶段和近期联盟能力研究阶段,并分析了两者的研究差异;讨论了国内战略联盟理论研究的现状,在与国外战略联盟理论研究进行比较的基础上,分析了国内战略联盟理论研究存在的问题以及与国外的差距。     

基于人工神经网络的中原铁路货运向现代物流拓展的对策研究

根据中原铁路货运的现状和自身优势,结合国内外市场需求变化和现代物流发展趋势,运用现代物流原理,分析论证了中原铁路运输业拓展现代物流的必要性、战略目标、创新策略及拓展对策.     

企业动态联盟中的战略成本管理

作为外部资源整合的一种重要手段,企业动态联盟(虚拟企业)模式已引起企业界的广泛重视。动态联盟是靠某种共同利益所产生的凝聚力暂时维系在一起的,这就决定了其内部价值链比单个企业更具有动态性,其战略成本管理更侧重于项目设计和联盟企业的挑选。本文的目的在于针对这一特点,为战略成本管理思想在动态联盟中的应用提供一种方法。     

现代营销渠道的整合与变革

现代市场环境的改变,使得营销渠道管理在企业营销运作中的地位日趋重要,成为企业获取竞争优势的一个战略要素.传统营销渠道成员关系的冲突在所难免,现代营销渠道的主题是合作.依据现代营销渠道管理理论,应重视解决渠道冲突和寻求渠道合作的思路与方法.     

银行战略联盟的价值链分析

从价值链的角度诠释银行战略联盟,可以认为战略联盟的实质是价值链核心环节的互补。银行战略联盟有三种策略:交易联盟、职能联盟和动态联盟。从实际出发,银行组建战略联盟应该遵循一些基本原则。我国银行应实施战略联盟,以提高我国金融业的核心能力。     

Maternal Emotional Styles and Child Social Adjustment: Assessment, Correlates, Outcomes and Goodness of Fit in Early Childhood

The goals of the present research were to develop a modified version of an existing self‐assessment questionnaire designed to measure parents’ emotional style and to examine how the aspects of child regulation may moderate the relation between the emotional styles and social outcomes in childhood. Participants in Study 1 were 140 mothers and children (73 males, 67 females, M_age=56.0 months). The mothers completed the Maternal Emotional Styles Questionnaire (MESQ) to assess maternal emotional styles, and the Child Behavior Vignettes to assess parental goals across two scenarios. Participants in Study 2 were 50 mothers who were interviewed regarding their emotional styles using the Meta‐emotion Interview, and who also completed the MESQ. In Study 3, 100 mothers and children (41 males, 59 females, M=58.0 months) participated. The mothers completed the MESQ and the Child Behavior Questionnaire to assess the children's emotion and behavior regulation. Teachers completed the Child Behavior Scale to measure the indices of preschool adjustment. Results from Studies 1 and 2 indicated a two‐factor scale for the MESQ, with good psychometric properties (including stability, convergent validity, and construct validity). Results from Study 3 indicated different patterns of associations between maternal emotional styles, and child adjustment for well‐regulated versus dysregulated children.     

德意日同盟条约对世界战略格局的影响

德意日三国同盟条约的签订,造成了国际战略格局的重新演变与分化。德意日空前团结, 侵略野心急剧膨胀,不断扩大称霸世界的战争;英美举起抗击侵略大旗,构筑成英美同盟;苏联严守“中 立”,置于战事之外。反法西斯阵营各自为战的局面,便利了法西斯集团的侵略。     

Predicting Spouses’ Perceptions of Their Parenting Alliance

This study used marital‐ and individual‐level variables to predict spouses’ perceived parenting alliance. One hundred married couples completed measures of parenting alliance, marital consensus, marital power, and depression. Analyses revealed that marital consensus was a significant predictor of parenting alliance for both parents, and that depression also was a significant predictor for wives. Analyses using both spouses’ data indicated that wives’ perceptions of consensus and depression significantly predicted both spouses’ parenting alliance, suggesting that wives are the barometer of the marital relationship ( Floyd & Markman, 1983 ) and of the parenting relationship as well. Implications for research are discussed.     

On diagnostic checking of the autoregressive conditional intensity model

The autoregressive conditional intensity model proposed by Russell (1998) is a promising option for fitting multivariate high frequency irregularly spaced data. The authors acknowledge the validity of this model by showing the independence of its generalized residuals, a crucial assumption of the model formulation not readily recognized by researchers. The authors derive the large‐sample distribution of the autocorrelations of the generalized residual series and use it to construct a goodness‐of‐fit test for the model. Empirical results compare the performance of their test with other off‐the‐shelf tests such as the Ljung–Box test. They illustrate the use of their test with transaction records of the HSBC stock.