一种基于AXIS的Web服务安全模型的设计

本文讨论了Web服务安全模型和SOAP消息安全框架的核心技术,利用AXIS引擎处理器的可扩展性,按XML数字签名和加密规范建立了SOAP消息安全处理机制,设计了一套基于AXIS的SOAP消息级Web服务安全模型,并且进行了实现。     

《商务现场口译》“3P”模式之初探

口译是一项立竿见影的语言交际活动。口译教学必须加强实践性,强调口译技能技巧训练。该文通过对吉尔口译训练模式与厦门大学口译训练模式的比较,提出了以实践为主线的“3P”口译模式,及其在《商务现场口译》课程教学中的具体训练方法和可操作案。     

物质与非物质组合激励模型研究

以较低的成本达到更好的激励效果，是企业管理者追求的目标之一。在H—M模型的基础上，引入贴现因子建立的物质与非物质组合激励模型，能够对企业所有者和企业经理期望收入的改进情况进行有效的分析。     

陕甘宁蒙毗邻地区石窟寺的特点及地理环境探析

陕、甘、宁、蒙毗邻地区石窟寺众多,大多数石窟窟形较小,造像数量多,题材较为复杂。由于地处四省区的交界地带,长期以来未进行综合研究,本文通过对这一地区石窟寺资料的梳理研究,并分析其共性、分布特点,提出"鄂尔多斯模式"的概念,并对于这一地区石窟寺密集的原因进行了探讨。     

Asymptotics of cross-validated risk estimation in estimator selection and performance assessment

Risk estimation is an important statistical question for the purposes of selecting a good estimator (i.e., model selection) and assessing its performance (i.e., estimating generalization error). This article introduces a general framework for cross-validation and derives distributional properties of cross-validated risk estimators in the context of estimator selection and performance assessment. Arbitrary classes of estimators are considered, including density estimators and predictors for both continuous and polychotomous outcomes. Results are provided for general full data loss functions (e.g., absolute and squared error, indicator, negative log density). A broad definition of cross-validation is used in order to cover leave-one-out cross-validation, V-fold cross-validation, Monte Carlo cross-validation, and bootstrap procedures. For estimator selection, finite sample risk bounds are derived and applied to establish the asymptotic optimality of cross-validation, in the sense that a selector based on a cross-validated risk estimator performs asymptotically as well as an optimal oracle selector based on the risk under the true, unknown data generating distribution. The asymptotic results are derived under the assumption that the size of the validation sets converges to infinity and hence do not cover leave-one-out cross-validation. For performance assessment, cross-validated risk estimators are shown to be consistent and asymptotically linear for the risk under the true data generating distribution and confidence intervals are derived for this unknown risk. Unlike previously published results, the theorems derived in this and our related articles apply to general data generating distributions, loss functions (i.e., parameters), estimators, and cross-validation procedures.     

心理辅导综合模式及其实践意义

心理辅导综合模式是以生活生涯发展理论为基础构建的一种全新的学校心理辅导模式。它将心理辅导与教学视为两种同等重要的教育传输系统,明确规定心理辅导教师的工作内容,注重心理辅导的综合性与发展性,强调心理辅导应面向全体学生,面向学生社会生活并促进学生能力的全面发展。心理辅导综合模式是当代美国最有影响的学校心理辅导模式。这一模式对改进我国学校心理辅导工作具有借鉴意义。     

Cp准则应用于遴选最佳ANOVA模型

以往在对特定的方差分析（ANOVA）资料指定其数学模型时，都是根据因子及因子之间的互作效应的多少来进行的，似乎在ANOVA问题当中不存在模型选择问题。本文则表明在ANOVA当中不但存在着模型选择问题，而且利用Cp准则还能导致正确的结论。     

冬季育雏卫生防疫工作模式化管理的推广应用

以哲里木盟与呼伦贝尔盟部分养鸡场、鸡农户的四种不同品种鸡为试验对象，推广一整套在实践探索中表现良好防疫效果的卫生防疫体系，经5个月的推广试验取得了重复性较高的防疫效果，使育雏率平均由87％提高到97.6％。     

SIOP模式及其对我国双语教学的启示

SIOP模式是教授英语学习者学科内容的一种教学模式,还是课堂观察的评价工具,其主要包括八大组成部分和三十条细则。该模式目前广泛运用于美国中小学教学之中,并取得了理想的效果。SIOP模式对我国双语教学具有以下三点启示:我国双语教学应以实践为导向、理论为指导、课堂为中心、学生为主体;我国双语教学应兼顾内容目标和语言目标;我国双语教学需要开发具有很高信度和效度的双语课堂教学评价工具。     

Online Intermediary as a Channel for Selling Quality‐Differentiated Services

When deciding whether to utilize an online intermediary in addition to their own distribution channels, quality differentiated service providers face the trade‐off between the benefit of extended reach and the threat of increased competition. Using an analytical framework, we analyze when and how service providers may utilize an online intermediary to their advantage in the presence of advance selling (i.e., selling a service at an early date for future consumption). In general, when an online intermediary is used, the competition effect dominates the reach effect and leads to a falling price trend. Interestingly, we find that the negative effect of increased competition on profits, due to intermediary usage, can be reversed by committing to self‐imposed participation limits (i.e., selling only a predetermined amount of services through the online intermediary). This ensures that the service provider is better off selling through both its own site and the online intermediary, rather than selling exclusively using either channel.