Catalogue of Group Structures for Three-level Fractional Factorial Designs

Taguchi (1959) introduced the concept of split-unit design to sort the factors into different groups depending upon the difficulties involved in changing the levels of factors. Li et al. (1991) renamed it as split-plot design. Chen et al. (1993) have given a catalogue of small designs for two- and three-level fractional factorial designs pertaining to a single type of factors. Aggarwal et al. (1997) have given a catalogue of group structure for two-level fractional factorial designs developed under the concept of split-plot design. In this paper, an algorithm has been developed for generating group structure and possible allocations for various 3^n-k fractional factorial designs.     

On the Use of Semi-folding in Regular Blocked Two-level Factorial Designs

In this article, we consider experimental situations where a blocked regular two-level fractional factorial initial design is used. We investigate the use of the semi-fold technique as a follow-up strategy for de-aliasing effects that are confounded in the initial design as well as an alternative method for constructing blocked fractional factorial designs. A construction method is suggested based on the full foldover technique and sufficient conditions are obtained when the semi-fold yields as many estimable effects as the full foldover.     

De-aliasing effects using semifoldover techniques

Semifoldover designs, obtained by semifolding a regular two-level factorial design, have been discussed recently in the literature. In this article, with the use of indicator functions, we investigate various semifoldover designs that are obtained from a general two-level factorial design. We discuss when a main factor or a two-factor interaction can be de-aliased from their aliased two-factor interactions, and extend some of the existing results from regular designs to non-regular designs. Finally, we present some examples to illustrate the results developed here.     

Word文档信息的智能提取技术

在对Word档对象的分析基础上，介绍了Word档信息的智能提取技术，该技术可以从Word档中高效、快速地提取有用信息，对需要将Word档中的信息自动录入数据库等系统的应用具有很强的实用性。     

科技德语的语法分析

科技德语曾是国际性的科学技术语言,有简洁、客观和信息集中等特性.本文在科技德语的书面语范围内,从语法角度对部分比较有特色的构词法和句型结构进行分析,以利于在科技德语方面进行研究和教学.     

国内外二语词义猜测研究20年述评

词义猜测研究是二语习得领域的重要课题之一。对20年来国内外词义猜测研究进行综述,梳理其发展历史、术语界定、研究范围(知识来源分类、推理策略分类和相关影响因素在词义猜测中的作用)和存在的问题,并对词义猜测研究提出思考和展望,以期对学界在该领域取得突破和发展提供理论框架和有益启示。     

从句法角度论大新壮语形容词的词类归属问题

形容词的词类归属问题一直是语言学界争论的焦点,根据壮语南部方言——广西大新壮语的特点,大新壮语的名词和动词分属两大词类,而形容词属于动词的一个小类。大新壮语形容词归类有主要鉴定标准、次要鉴定标准及参考标准,这些标准有效地解决了大新壮语形容词的词类归属问题。     

词尾标记-e的消失与英语结构对称性破缺

英语词尾-e的逐渐消亡是语言自身通过放大系统中不对称差异,迫使其低维子系统对称破缺,实际上是依靠概念隐喻以牺牲其结构上的对称美来换取话语的经济效率,用经济的话语表达最充分的信息。而语法化是造成语言内部语法标记和结构渐变的重要原因之一。     

试析中亚东干语中的借词

本文列举了东干语中来自不同语言的借词词汇 ,分析了这些借词在东干语中的语音变化及使用情况 ,并初步探讨了东干语借入外来词语的缘由