算子多项式的数值域

研究Hilbert空间H上的算子多项式数值域的性质及算子多项式数值域与n-次数值域之间的关系。     

一类具有柔性臂的机器人的稳定性(英)

主要讨论了柔性臂振动系统，其弯曲振动与扭转振动的耦合表现在边界条件中．利用算子谱理论与算子半群理论，得出了系统相应的发展方程的主算子生成的算子半群的具体表达式．并证明了此半群是非紧非指数稳定的解析半群。     

Environmental Correlates of Cognition and Behavior in Children with Fetal Alcohol Spectrum Disorders

ABSTRACT

The physical, cognitive, and behavioral correlates of Fetal Alcohol Spectrum Disorders (FASD) have been well-researched. However, there is minimal investigation of the non-biological correlates of cognition and behavior in this population. The association between foster care placement history and cognitive and behavioral functioning was explored using archival data from 136 children with FASD. Significant cognitive and behavioral abnormalities were found in the overall sample. Children with one foster care placement performed significantly better on measures of verbal intelligence, mathematics achievement, and impulse control and endorsed fewer symptoms of internalizing disorders compared to children who were never removed from their biological home. Children with multiple foster home placements generally fell between the other two groups on assessment measures. It may be important to consider placement history of children with FASD when attempting to understand their cognitive and behavioral abnormalities.     

高适古体诗用韵考

唐代边塞诗经历了由初唐四杰时代的长篇边塞诗,到盛唐初期三王开元时代的短篇乐府边塞诗,再到盛唐中后期高岑的七言歌行式的长篇边塞诗的转型。高适的歌行边塞诗,正是这种转型的关键。高适现存古体诗148首中,多用七言古诗,用韵较宽,多用古风歌行,一首诗中常出现换韵,换韵方式多种多样,换韵的第一句大多押韵,邻韵之间同用的情况较多。     

Choice and caring: The experiences of parents supporting young people with Autistic Spectrum Conditions as they move into adulthood

This paper reports findings about parents' experiences of caring for young people with Autistic Spectrum Conditions (ASCs) moving into adulthood. In‐depth interviews were conducted with 38 parents of young people (15–21 years) with ASCs. Data were analysed thematically. In the perceived absence of service support, parents' acted as ‘care‐coordinators’ and ‘life‐supporters’ for their child as they moved into adulthood. These roles came with little choice, emotional demands and personal restrictions. Being supported was important for parents, but preferences differed regarding what this should look like. Implications for policy are discussed.     

Spectral analysis of combustion noise and flame pattern recognition

In many situations, flame patterns in a combustion chamber cannot be observed directly by using an electronic or optical probe. However, an experienced engineer can identify the burning process by listening to the noise that it generates. In this paper, we study acoustic characteristics of turbulent impinging flames by using spectral analysis and statistical pattern recognition. By experimenting with the ignition method, different flame patterns were generated in a laboratory. We find that each flame pattern can be characterized effectively by using the power spectrum of the noise and can be identified by using this information alone.     

拉曼光谱数据压缩的两种方法

拉曼光谱数据量大,需要较大数据存储空间和较长的建模时间。本文以二氯甲苯为例,采用了小波包压缩技术以及保留峰位和间隔数据采样的压缩技术,比较了压缩前后谱图差异以及性质分析偏差的变化。研究结果表明,这两种方法可保证在不丢失重要信息的前提下,有效地压缩数据,节省存储空间,提高建模速度和分析速度。     

钢琴教学之我见

钢琴是一种技艺性极高的乐器,先掌握正确的学习方法,才有可能提高学习效率,取得好的学习效果。正确读谱、背谱是保证练琴质量的基础;保证练琴质量的关键是敏锐的听觉;找出练琴中的症结所在,及时改正是重点。只有这三方面都做好了,才有可能成为出色的钢琴演奏家。     

青藏高原史前的“广谱革命”

在青藏高原出土的考古材料中发现,大约距今20000-8000年之间,此地的石制工具呈现出小型化的特征,这意味着此时已有了对小型动物的狩猎;与此同时,食物加工和盛放工具（如研磨器、陶器）的出现,成为人类对于食物强化利用的物质证据。对小型动物的狩猎和食物强化利用作为20世纪70年代美国考古学家提出的＂广谱革命＂的理论特征,不仅适用于北美,同时也适用于青藏高原的史前考古。     

明末清初伊斯兰教学者马明龙的生平与著述

明末清初伊斯兰教学者马明龙的生平与著述,学界注意尚不多.本文介绍了马明龙现存的主要著作<认已醒语>;还依据<经学系传谱·马明龙先生传谱>、<天方正学·武昌真人墓志>、<马四爸爸传略>(<认已醒语>后附)及<马铨华表碑记>,叙述了他的生平;最后简略地总结了马明龙佚存作品的总体状况.