铝基复合材料烧结试验中试样制备及试验方法研究

铝基复合材料烧结试验所用试样的制备方法采用常用的粉末冶金法,它的制备方法包括粉末预处理,配料,混料,冷压成形,制样等.但每一个工序都与传统的粉末冶金法有所不同,具有其独特性.原位观察法进行烧结试验也为课题组独创.这些研究为铝基复合材料烧结工艺研究提供了试验依据.     

History Run Wild: The Alternate World of Joan Aiken’s <Emphasis Type="Italic">The Wolves of Willoughby Chase</Emphasis> Series

This article examines the historical fantasy world created by Joan Aiken in the eleven volumes of her Wolves of Willoughby Chase series. In particular it looks at her subversion of historical reality by the creation of an alternative yet recognisable representation of our own world, using a wide range of events, and the remoulding of aspects of language and geography. It also discusses her reasons for writing in this form and explores the character of Dido Twite as heroine and major raison dtre of the series.This revised version was published online in May 2005 with corrections to the article title.     

A rapid fuzzy rule extraction method for fuzzy controller

Based on division of the three-dimensional space from data samples, the method proposed in this paper can rapidly extract fuzzy rules by using the fuzzy information of the samples. The principle of this approach is proved theoretically. Due to its simplicity this method can be used to extract fuzzy rules in real-time for an adaptive control system. Simulation results showed that this approach is effective and practical. Project (69775013) supoorted by Natural Science Foundation of China.     

基于灰色样本聚类的R＆D人员绩效评价

R＆D人员是企业保持技术创新和持续竞争优势的源泉,需要对其进行绩效评价以提高研发效率。先根据R＆D人员绩效表现特点,以业绩、态度、能力为准则建立指标体系,利用层次分析方法对各指标的权重进行赋值;其次用灰色样本、分类分析;最后运用DIS系统的聚类分析功能进行实际数据的实证分析。     

Multilevel Mediation With Small Samples: A Cautionary Note on the Multilevel Structural Equation Modeling Framework

Multilevel structural equation modeling (ML-SEM) for multilevel mediation is noted for its flexibility over a system of multilevel models (MLMs). Sample size requirements are an overlooked limitation of ML-SEM (100 clusters is recommended). We find that 89% of ML-SEM studies have fewer than 100 clusters and the median number is 44. Furthermore, 75% of ML-SEM studies implement 2–1–1 or 1–1–1 models, which can be equivalently fit with MLMs. MLMs theoretically have lower sample size requirements, although studies have yet to assess small sample performance for multilevel mediation. We conduct a simulation to address this pervasive problem. We find that MLMs have more desirable small sample performance and can be trustworthy with 10 clusters. Importantly, many studies lack the sample size and model complexity to necessitate ML-SEM. Although ML-SEM is undeniably more flexible and uniquely positioned for difficult problems, small samples often can be more effectively and simply addressed with MLMs.     

童话对儿童创伤经验的书写

心理是由内在的、相互对立的力量构成的发展中的矛盾统一体。创伤经验是心理内部冲突的表现，它是打破虚幻的自我、重新构建主体的积极力量。童话运用语言对创伤经验进行表征，使主体欲望得以表现，儿童无以名状的内在焦虑也由此转化为外在的具体所指。从而有助于儿童对主体的重新构建。     

图书丢失率调查方案的设计与实践

文章介绍江南大学图书馆以图书半衰期作为新旧书划分线而设计的一种调查图书丢失率的方案,并用加权数学公式对数据进行分析处理,指出新书丢失率的确认和控制将是图书馆馆藏管理的重点,并对方案的初步实践进行反思和总结,给出合理的图书丢失率的数值范围.     

铝基复合材料烧结试验中试样制备及试验方法研究

铝基复合材料烧结试验所用试样的制备方法采用常用的粉末冶金法,它的制备方法包括粉末预处理,配料,混料,冷压成形,制样等。但每一个工序都与传统的粉末冶金法有所不同,具有其独特性。原位观察法进行烧结试验也为课题组独创。这些研究为铝基复合材料烧结工艺研究提供了试验依据。     

烟叶样品中主要碳水化合物研究

对云南省3个主要产烟区不同品种、不同部位烟叶中碳水化合物含量的变化规律以及不同施肥情况、连作和轮作对烟叶样品中碳水化合物含量的影响进行了分析研究.结果表明轮作烟叶样品中总糖和淀粉含量均高于连作烟叶样品;不同施肥情况的烟叶样品中总糖含量的变化规律与淀粉含量的变化规律正好相反;不同部位烟叶样品中总糖、淀粉和总细胞壁物质含量的变化规律也各不相同.