水溶性CuS纳米晶的合成及其与生物大分子的作用

以L-半胱氨酸为稳定剂,在水相中合成了水溶性CuS纳米晶,通过XRD、TME对该纳米粒径进行分析,并研究了CuS纳米晶与牛白蛋白相互作用时荧光吸收光谱的变化情况.结果表明:合成的CuS纳米晶近似呈球形,有轻微的团聚现象,粒径集中分布的范围较宽,约60～90 nm;CuS纳米晶与生物大分子作用后荧光发射强度减弱,并且随着蛋白质用量的增加而出现相应的减色效应.     

‘I'm ready for a new chapter’: The voices of young people with autism spectrum disorder in transition to post-16 education and employment

This study explores the views and experiences of 12 young people with autism spectrum disorder (ASD) in transition to post-16 education and employment, in light of the changes introduced by the new special educational needs and disability (SEND) legislation in England. The extension of provision until the age of 25, and the introduction of person-centred education, health and care (EHC) plans, have given a significant place to the views of young people with SEND and their families. The views, wishes and aspirations of young people must be captured in the newly developed plans, reflecting the statutory requirement for local authorities to systematically record these in a biopsychosocial way, focusing on participation and well-being. Twelve semi-structured interviews were conducted with young people with ASD attending specialist settings or receiving specialist support under the new EHC plans. These were analysed inductively, through thematic analysis. The findings suggest that at the time of transition, young people with ASD want to become increasingly more independent, present ambivalent feelings about their future and acknowledge the relevance of support systems in their lives. Implications for practice and future research are discussed, in light of the new English policy context.     

动态运动诱发腰部脊竖肌疲劳过程中sEMG信号变化特征

本研究的目的在于观察动态运动诱发腰部脊竖肌疲劳过程中sEMG信号线性分析指标MPF和非线性分析指标Lempel-Ziv复杂度和近似熵的动态变化规律，确定能够较好地运用于脊竖肌功能评价的sEMG指标。研究结果表明，动态运动过程中，腰部脊竖肌sEMG信号的MPF和Lempel-Ziv复杂度均呈明显的线性规律下降；70%的受试者的近似熵呈先升后降型变化;以MPF下降来预测腰部脊竖肌功能水平的外部效度优于Lempel-Ziv复杂度。研究结果提示，sEMG信号的上述变化可能是神经肌肉系统自组织调节活动的表现。     

Concatenated Trellis Coding and CPM for DS/SSMA Communications in Rayleigh Fading Channel

本文在衰落信道下将级联网格编码调制（ＴＣＭ）和连续相位调制（ＣＰＭ）应用于直接序列扩频多址（ＤＳ／ＳＳＭＡ）系统中．作者分别采用了理论分析和数值模拟两种方法研究了级联ＴＣＭ／ＣＰＭＤＳ／ＳＳＭＡ系统的性能,结果表明在相同的条件下采用级联ＴＣＭ／ＣＰＭ编码调制方式的ＤＳ／ＳＳＭＡ系统的错误概率远小于采用单一ＴＣＭ或ＣＰＭ的ＤＳ／ＳＳＭＡ系统的错误概率．     

Educating students with FASD: linking policy,research and practice

Fetal alcohol spectrum disorder (FASD ) is a prevalent neurodevelopmental disability with significant implications for learning and behaviour. International research suggests that the prevalence of FASD in school‐aged children is 2.3–6.3%. In this paper, we address the questions: (1) what is FASD ; (2) what is the prevalence of FASD in schools; (3) what is the impact of FASD ; and (4) why develop special FASD education strategies and programmes? We summarise the 18‐year history of W innipeg S chool D ivision's development of its FASD P rogramme of services, describe the specialised FASD classrooms and then present the results from a consensus‐generating workshop comprised of 36 FASD education professionals, with over 209 years of collective FASD education programme experience, who were asked to identify and reach consensus on best strategies and lessons learned in FASD education programmes. We then suggest that effectively educating children with FASD is critical to get right if positive educational outcomes are to be realised.     

Automatic assessment of cognitive and emotional states in virtual reality-based flexibility training for four adolescents with autism

Tracking students’ learning states to provide tailored learner support is a critical element of an adaptive learning system. This study explores how an automatic assessment is capable of tracking learners’ cognitive and emotional states during virtual reality (VR)-based representational-flexibility training. This VR-based training program aims to promote the flexibility of adolescents with autism spectrum disorder (ASD) in interpreting, selecting and creating multimodal representations during STEM-related design problem solving. For the automatic assessment, we used both natural language processing (NLP) and machine-learning techniques to develop a multi-label classification model. We then trained the model with the data from a total of audio- and video-recorded 66 training sessions of four adolescents with ASD. To validate the model, we implemented both k-fold cross-validations and the manual evaluations by expert reviewers. The study finding suggests the feasibility of implementing the NLP and machine-learning driven automatic assessment to track and assess the cognitive and emotional states of individuals with ASD during VR-based flexibility training. The study finding also denotes the importance and viability of providing adaptive supports to maintain learners’ cognitive and affective engagement in a highly interactive digital learning environment.     

宽频带频谱感知中的快速边界识别方法

以认知无线电为核心的动态频谱共享接入作为解决万物智联时代频谱稀缺问题的关键技术之一,快速、鲁棒的频谱感知是动态接入的基础。优化改进一种基于能量检测的宽带频谱感知方法,在无需先验信息的情况下实现了快速频谱边界识别与信道状态判定。实验结果表明,本方法适用于宽频带频谱盲感知,且在低信噪比情况下具有良好的性能。     

论二正（异）丙氧基-三嗪的合成

以三聚氯氰为起始原料合成了四种三嗪衍生物,并用红外光谱和质谱分析法对它们进行了表征.产品检测结果表明,四种三嗪衍生物有较高熔点,在常温下不易挥发.     

透镜的变换

论述透镜在频谱变换方面的原理与机制,对透镜变换波面作些介绍,以便对透镜的作用有进一步的认识,能充分地发挥它在现代科技各个领域中的应用。     

我国高等职业院校的定位及分类统计——基于教育谱、研究谱、职业谱的三维辨析

从教育谱、职业谱、研究谱的视角,可以对我国高等职业院校进行类型归属、培养层次、功能区间的准确定位,高等职业院校是按照国际教育分类标准提供5B级课程的,以培养技术、技能型应用人才为目标的,以应用和教学为主要功能的高校。根据功能及专业设置的不同,可分类为师范专科、高职综合、高职文科、高职理科等四大类型。