Sequential Pattern Analysis: A Statistical Investigation of Sequence Length and Support

In sequential pattern analysis, the frequency of patterns is evaluated by the support. While computed efficiently from large databases, we show that the support cannot be compared between different databases, since it is influenced by the actual sequence length distribution. Models for this sequence length distribution are surveyed. One of these models, the Good distribution, appears to be sufficiently flexible for practice. It is used to exemplify an approach for adjusting the relative support such that the resulting adjusted support values are better comparable between different databases. We illustrate our findings with texts from the bilingual FinDe corpus.     

A Note on the Lower Bounds on Maximum Number of Clear Two-Factor Interactions for (2 m−p III) and (2 m−p IV) Designs

ABSTRACT

In the reliability analysis of mechanical repairable equipment subjected to reliability deterioration with operating time, two forms of the non-homogeneous Poisson processes, namely the Power-Law (PL) and the Log-Linear (LL) model, have found general acceptance in the literature. Inferential procedures, conditioned on the assumption of the PL or LL model, underestimate the overall uncertainty about a quantity of interest because the PL and LL models can provide different estimates of the quantity of interest, even when both of them adequately fit the observed data. In this paper, a composite estimation procedure, which uses the PL and LL models as competing models, is proposed in the framework of Bayesian statistics, thus allowing the uncertainty involved in model selection to be considered. A model-free approach is then proposed for incorporating technical information on the failure mechanism into the inferential procedure. Such an approach, which is based on two model-free quantities defined irrespectively of the functional form of the failure model, prevents that the prior information on the failure mechanism can improperly introduce prior probabilities on the adequacy of each model to fit the observed data. Finally, numerical applications are provided to illustrate the proposed procedures.     

基于QFD矩阵的竞争战略决策框架

借助于全面质量管理理论中的QFD矩阵,本文提出了一种顾客导向的竞争战略决策框架,它有效地将内部竞争能力与外部竞争要素放在一起进行分析与决策。文中还进一步探讨了其中的竞争要素的特征以及竞争冲击曲线理论,为有效地作出竞争战略决策提供了基础。     

一种适用于NGSO MSS网络的混合信道分配方案

针对ＮＧＳＯＭＳＳ网络的动态特性,提出了一种适用于该网络的混合信道分配方案。在该方案中,固定信道采用非均匀压缩图案分配算法分配给各小区作为标称信道专用,并定期根据变化了的业务条件进行重新分配,动态信道的指派采用最先可行ＦＡ（ＦｉｒｓｔＡｖａｉｌａｂｌｅ）算法。仿真结果表明,在较宽的负载范围内,运用该方案比固定信道分配方案均有更好的性能,并能有效地降低切换呼叫和信道更新期间的呼损率,从而显著提高网络的业务承载量。     

英语中部分含有BUT句型的理解与翻译

本文归纳了英语中部分含有＂BUT＂的句型,从其句型的构成和表达方式入手加以分析和探讨,以达到易于理解,从而更好地翻译这些句式。     

对象、程序与模式：社会保障行政的难题与挑战

社会保障行政机关对社会保障制度和社会保障权的实现负有最重要、最直接和不可或缺的义务,但社会保障极其复杂和微妙,社会保障行为必将遇到诸多难题。而在这其中,社会保障受益人的确认问题、社会保障行政程序问题、社会保障行政模式问题是各国社会保障行政中遇到的较为普遍的问题。认真解剖分析这些问题,对于解决它们具有重要意义。     

关于句群接应手段——接点模式的探讨

句群是多学科共同感兴趣的语言单位.汉语句群接应手段是句群研究的重要课题,而关于句群"接点"的研究还很少有人问津.以现代语言学基本理论立论,对句群接应手段进行研究,提出了"接点模式"的概念,认为"接点"和"接点位置"是句群接应的必备要素,从大量语料中总结出句群接点模式的基本型和特殊型的13种具体模式.     

父母教养方式与中学生自尊的相关研究

采用父母教养方式评价量表(EMBU)和自尊量表(SES),分别对初一、初二、初三194名初中生进行了自尊和父母教养方式团体测验,将测验结果进行相关统计,并对研究结果进行分析发现,(1)不同性别学生所感受到的父母教养方式存在差异。(2)不同性别学生的自尊没有差异;不同年级学生的自尊有差异。(3)中学生的自尊与其所感受到的来自父母的情感温暖与理解有显著的正相关,而与父母的惩罚、严厉,拒绝、否认以及父亲的过度保护有显著的负相关。     

服装制板、打板在实践应用中的探索

从服装企业生产的角度,阐述了服装制板、打板在生产实践中的具体应用。并结合实践经验,分析总结了针对不同情况与要求如何快速、准确、合理地制板、打板,以便为服装生产企业提供优质、方便、快捷的技术服务,促进服装企业的快速发展。     

论英语中的主位推进模式与语篇的生成

文章根据功能语言学的主述位理论和当代语言学家对主位推进模式的分析,总结出英语中主位推进的4种模式,分析了主位推进模式在语篇生成中所起的作用及其在英语写作教学中的应用。