激光甲烷传感器及其交叉干扰实验研究

基于激光光谱吸收的原理,研究了激光甲烷传感器的测量原理和系统设计,开展了实验室环境下水汽、一氧化碳和二氧化碳等气体对甲烷测量结果的交叉干扰,给出了实验数据并进行了相关分析。实验证明激光甲烷传感器具有测量准确,稳定性高,抗气体交叉干扰等特性。     

不同产地金钗石斛红外光谱解析

利用傅利叶变换红外光谱仪（Fourier Transform Infrared Spectroscopy）分析了来自云南和浙江的两个金钗石斛（Dendrobium nobile Lindl.）的红外光谱特征。两个金钗石斛样品均具有基本相似的红外光谱,但个别吸收峰的峰强及峰位具有明显区别。云南金钗石斛具有明显的2851 cm^-1吸收峰和较小的1736 cm^-1的吸收峰,而浙江金钗石斛具有较小的2852 cm^-1峰和很强的1740 cm^-1吸收峰,其峰高与1636 cm^-1处的峰高相当。两者的二阶导数谱在1055 cm^-1和1073 cm^-1附近的峰也有明显区别。这种方法对于快速直接判定金钗石斛的产地来说是可行的。     

Maxwell理论电磁对偶性的费米子表述

通过引入复量场F=E-iB,给出了无源Maxwell方程组的电磁对偶对称性的费米子表述形式.接着给出了有源情况下Maxwell方程的费米子表述形式.在有源情况下必须引入Dirac磁单极而且这一描述形式具有洛伦兹协变性和电磁对偶性.     

Raising Autism Awareness among Greek Teachers

A recent special education legislation reform in Greece puts emphasis on the inclusion of pupils with special educational needs into mainstream schools. The purpose of the present study was to investigate knowledge of ASD among 67 mainstream nursery and primary classroom teachers, and evaluate the effectiveness of a half-day ASD awareness seminar in increasing their knowledge of the disorder. A self-report ASD Knowledge Questionnaire (ASD-KQ), developed for the purpose of this study, was used before and after the ASD awareness seminar. The results indicated a significant shift from low to moderate/high level of ASD knowledge among teachers with no previous training in special education and/or autism (58.7%), whereas this shift did not reach significance level in the teacher’s group with previous training (16.7%) after the seminar. The present findings have important implications for the development of training programmes of practising teachers.     

不同混沌源调制信号降低Boost型变换器电磁干扰水平研究

以Boost型DC／DC变换器为对象，研究在同一混沌调制模式下，不同混沌源对降低开关电源电磁干扰水平效果的影响。仿真结果表明：不同混沌源调制信号有不同的降低电磁干扰水平效果，Lorenz混沌源降低电磁干扰水平的效果较好。     

Hilbert空间H上的正则射影对

研究了Hilbert空间日上正则射影对的性质和结构，以此作为工具，讨论了正则射影对的乘积的性质和它的谱的性质，并且证明了正则射影对(P，Q)的线性组合的性质和它的谱的性质．     

Early Responsiveness to Intensive Behavioural Intervention Predicts Outcomes Among Preschool Children with Autism

Archival data from a private day‐school offering early intensive behavioural intervention based on the principles of applied behaviour analysis to preschoolers with autism (N = 29) were analysed longitudinally. Teacher reports on the Assessment of Basic Language and Learning Skills (ABLLS) were available up to 4 times and on the Vineland Adaptive Behavior Scales—Classroom Edition (VABS‐CE), at 2 time points. Parent reports on the Autism Treatment Evaluation Checklist (ATEC) were available at 2 time points. All assessments occurred approximately at 6‐month intervals. Children showed statistically significant progress across all skill domains on the ABLLS and on selected subscales and the composite scales of the VABS‐CE and ATEC. Gains were substantial for some children and minor for others. When divided into performance‐based groups, both higher‐performing and lower‐performing groups showed improvement over time, with greater improvement for the higher‐performing group. Nine of 16 children who had been discharged from the programme entered inclusive kindergarten or first‐grade classrooms with an aide. Seven discharged children entered special education classrooms. No child progressed to the point that special education services were not needed. Findings are discussed relevant to the extant literature on early intensive behavioural intervention outcomes among young children with autism.     

线性介质中Maxwell理论的电磁对偶性

在引入磁单极（磁荷）的情况下，首先讨论了有源情况下各向同性的线性介质中Maxwell方程的电磁对偶性。接着在引入复量场F＝E－iB后，把介质中的Maxwell方程表述成费米子形式。最后给出了线性介质中洛伦兹变换下协变的电磁对偶方程组。     

浅谈电磁辐射污染的危害及其防护

随着经济的发展和信息时代的来临，各频段的电磁波充盈整个生活空间，电磁辐射环境污染已经成为继人气污染、水污染、噪声污染之后新的第四大公害，本文就电磁辐射污染的危害及其防治，作简要论述。     

开设"电磁感应现象观测"的综合实验

详细介绍了开设本科电磁场综合演示实验——电磁感应现象观测的内容和实践经验,并总结了实验所具有的特色和已取得的效果。