能用于F-可见光谱分析的新型分子体系显色剂

本文就可作为F^-可见光谱分析显色剂的新型超分子化合物，从分子结构、电子诱导、对阴离子的显色属性和对F^-选择性等方面做了评述。为发展新的F^-光谱分析法提供一些借鉴。     

傅里叶变换红外光谱用于一枝黄花的分析

分别在室温和在静态空气中升温到600℃的条件下，测定了一枝黄花全草红外光谱图，对红外光谱的峰形进行了归属分析，为鉴别一枝黄花全草提供了重要依据。该方法具有简便、快速、不需对样品分离提取等特点。     

自闭症谱系障碍者面孔加工障碍的成因——来自不同理论的解释

通过分析自闭症谱系障碍者面孔加工障碍的相关理论,揭示该群体面孔加工障碍的形成原因。首先,自闭症谱系障碍者在面孔加工中对社会刺激感知异常,对面孔缺乏兴趣,忽视面孔;在特定条件下回避眼睛,依靠嘴部进行面孔识别。相关理论有:社交动机假说、眼睛威胁假说和嘴部信息补偿假说。其次,自闭症谱系障碍者面孔加工能力不足,面孔加工相关脑区存在功能损伤、加工策略可能异常。相关理论有:加工策略异常假说、社会脑假说。最后,根据自闭症谱系障碍者面孔加工障碍的形成原因,提出教学启示。     

X射线荧光光谱法分析石灰石中SiO2和CaO

文章介绍采用压片法制样,X射线荧光光谱法分析石灰石中CaO和SiO₂,通过自制标准试样,根据产地不同分别建立工作曲线,克服了压片法的基体效应和矿物效应,分析准确度和精密度进一步提高,分析周期短,时效性好。     

认知无线电频谱感知算法研究

随着信息社会经济的快速发展,人们对移动通信、宽带无线接入的需求不断增长,无线频谱资源越来越匮乏,频谱指配越来越困难。认知无线电技术接入灵活,能够大大提高频谱的利用率,当前被认为是解决上述问题的最佳方案。无线频谱感知技术是认知无线电的基础,文章对主用户的发射端、接收端的频谱感知算法,基于小波基的多分辨率宽带信号频谱感知算法,多节点协同感知算法进行了研究,分析对比给出了各种算法的优缺点。     

履带车辆车体载荷分析和快速模拟寿命试验

讨论了履带车辆在凹凸不平路面上行驶时车体所受的动态载荷,分析了产生动态载荷的各种影响因素,并以某履带车在试验环境下行驶状态的载荷谱数据为依据,探索了快速疲劳试验的方法和数据处理技术。     

Community Childcare Providers’ Role in the Early Detection of Autism Spectrum Disorders

The first few years of life represent a crucial period for optimal brain development for young children. Therefore, it is important to identify children at-risk for developmental delays, including autism spectrum disorders, at the earliest age possible. An argument for utilizing community childcare providers for universal developmental screening is presented along with suggestions for assessment tool selection and a model for developmental monitoring in community childcare settings.     

Er~(3+):Y_(0.5)Gd_(0.5)VO_4晶体生长和缺陷研究

采用液相法合成了多晶材料,用高温提拉法(CZ法)生长出Er3 :Y0.5Gd0.5VO4晶体.用ICP光谱法测定晶体中Er3 离子含量为1.25 at%,分凝系数为1.06.采用热磷酸腐蚀晶片,在偏光显微镜下对晶体的(010)、(001)面上的缺陷进行了观察,可明显观察到位错线、生长层和包裹物.由此得出,Er3 :Y0.5Gd0.5VO4晶体的主要缺陷是位错、生长层和包裹物等.     

基于小波包分析的大跨桥梁结构损伤预警的理论研究

基于小波包分析推导了结构动力系统在不同分析尺度上的状态方程和观测方程,在此基础上研究了结构动力响应在不同分析尺度上的时-频特性.理论分析证明,采用小波包分解结构的动力响应得到小波包能量谱,将可以表征结构损伤的发生.在此基础上进行了小波包能量谱关于结构损伤和观测噪声的敏感性研究,分析了结构系统矩阵和测量噪声在各个分析尺度上的递推性.结果表明,采用结构动力响应的小波包能量谱进行结构损伤预警具有较好的损伤敏感性和噪声鲁棒性.     

The Outcome of a Social Cognitive Training for Mainstream Adolescents with Social Communication Deficits in a Chinese Community

The use of cognitive-based strategies for improving social communication behaviours for individuals who have solid language and cognition is an important question. This study investigated the outcome of teaching Social Thinking^®, a framework based in social-cognition, to Chinese adolescents with social communication deficits. Thirty-nine students (33 with Autism Spectrum Disorders and six without), ranging in age from 12 to 15 years with social communication deficits, participated in a 12-week intervention. Students’ pre- and post-intervention social behaviours were measured by six aspects of the Social Thinking-ILAUGH Scale involving 115 familiar raters. Students showed significant improvement in all the six subscales of the Social Thinking-ILAUGH except humour after training. Agreements on ratings among parents and school personnel were satisfactory. A framework based in social cognitive strategies, with appropriate linguistic and cultural adaptations, appears to be a promising tool for Chinese adolescents with social learning issues. Social behaviours improved across school and home settings as noted by groups of raters familiar with the students.