改进的惯性运动传感器步态识别

针对现有步态识别研究中步态识别率低、算法单一等问题,提出了一种基于惯性运动传感器的步态识别方法。首先,该方法结合动态时间规整与人工神经网络,通过前者提取固定长度的步态特征,并设置成本函数的阈值来判别后者的正负输入,提取得到波形特征。其次,运用列文伯格-马夸尔特算法改进标准BP神经网络,最终完成步态识别。实验证明所提的改进步态识别方法将平均步态识别率和相等错误率维持在91.5%和9.1%,较好地提高了步态识别的准确率。因此,该方法可作为高级认证方法的补充,以增加个人信息的隐私和安全性,适合实验室仪器安全管理应用。     

Phonology constrains the internal orthographic representation

Four experiments explored the composition and stability of internalorthographic representations of printed words. In three experiments,subjects were presented on successive occasions with words that wereconsistently spelled correctly or were consistently misspelled. On thesecond presentation, subjects were more likely to judge both kinds ofwords as correctly spelled than on the first presentation, suggesting thattheir preexperimental orthographic representations had been altered tomatch what they had seen on the first presentation. However, onlymisspellings that were consistent with the correct phonology wereaccepted; spellings that altered the phonology were rarely accepted,suggesting that some parts of the orthographic representation are lessstable than others. Also, subjects' reliance on orthographic vs.phonological memory when judging a word's spelling was affected by thekinds of other misspellings in the list. Lists that contained somephonologically implausible spellings for real words (e.g., *assostance)induced subjects to rely more on phonological plausibility when judgingthe correctness of other words in the list and less on orthographic memory.An individual grapheme in an internal orthographic representation wasunstable when there were many phonologically acceptable alternatives forit. The results are contrary to the view that the strength of an internalrepresentation is uniform across all its graphemes and is a function only ofvisual experience with the printed form. Results were interpreted in thecontext of a theory that considers spelling knowledge to be a by-productof the reading process, a process that involves phonological analysis.     

对专科院校开设"文献检索课"的再认识

文章回顾了20年高校开设文献检索课所取得的成就,分析了专科院校开课中存在的一些问题,并结合信息社会和计算机网络时代的斯特点,对目前在专科院校如何进一步开好文献检索课,提出了几点改进建议.     

Facilitating student well-being: relationships do matter

Background: Alongside academic and vocational goals, schools are increasingly being called upon to address student well-being. Existing evidence suggests that strong relationships and a sense of connectedness in school communities are important for fostering subjective well-being. However, identifying the specific nature of such relational dynamics, and accommodating the ‘personal’ within school cultures increasingly dominated by ‘performance’ narratives, remains a problematic task.

Purpose: This paper draws on Honneth’s recognition theory to offer fresh insight into how relationships act to facilitate and limit the experience of well-being at school. We suggest that such an approach holds considerable potential for developing teachers’ understanding of the tacit and explicit ways they and their students experience being cared for, respected and valued and the ways in which such actions impact on well-being.

Design and methods: The paper reports the qualitative findings from a large mixed-method study, involving students and staff across primary and secondary schools in three regions of Australia. The qualitative phase involved focus groups with 606 primary and secondary students and individual interviews with 89 teachers and principals.

Results: Across the focus groups and interviews, students and teachers placed substantial emphasis on the importance of relationships, while reporting differences in their views about which relationships support well-being. Alongside this, there were differences in the importance teachers and students placed on each of the three strands of Honneth’s recognition theory (translated for this study as being cared for, respected and valued) for influencing student well-being.

Conclusions: The findings affirm the critical role that relationships play in promoting well-being in the context of schools. Using recognition theory to analyse students’ and teachers’ views and experiences of well-being provides much greater insight into how these relationships are enacted – this being through the mutual experience of being cared for, respected and valued – within the context of schools.     

谈谈小说教学中的"整体感知"

针对小说教学中普遍存在的肢解小说、把小说当作散文类的作品进行局部的语文综合知识教学的倾向 ,认为小说教学应重在从整体的角度 ,去感知小说的情节结构、人物形象和主题 ,从而培养和提高学生的小说鉴赏能力     

基于贴近度与模糊层次分析的大跨悬索桥综合状态评估

基于模式识别理论,将模糊集贴近度的概念引入大跨桥梁状态评估中,利用模糊层次分析,建立起大跨悬索桥多目标评估的数学模型.以润扬大桥悬索桥的综合状态评估为例,介绍了评估的基本程序,包括评估指标的层次划分、指标权重的确定、模糊集隶属函数的定义以及贴近度的计算等.评估综合了健康监测系统的采集数据和人工监测结果2方面的信息,同时还给出了评估指标的分类方法和确定性指标、不确定性指标的计算方法.与传统的专家打分法相比,该方法更好地体现了监测信息的离散性、不确定性和评估过程的模糊性.     

Studies on solar flat plate collector evaporation systems for tannery effluent （soak liquor）

INTRODUCTION The tannery effluent (soak liquor) spewed out by tanneries to the surroundings has been polluting the land and water bodies in and around the tanneries and is evaporated over a period of time. The rate of evaporation over this period is small in the natural evaporative ponds and so large area is required. But land in urban and semi-urban sectors is scarce and very costly. Hence, it is required to augment the evaporation rate by adopting some suitable techniques. The rate of e…     

利用Jones矩阵研究四分之一波片对偏振光的作用

用坐标变换法解出偏振器件一般情况下的Jones矩阵,利用偏振器件的Jones矩阵分析四分之一波片对正入射平面偏振光和园偏振光的偏振态的改变,指出获得和判断椭园和园偏振光的方法。     

基于信息熵的水资源可持续利用综合评价分析

水资源可持续利用综合评价中各单项指标的评价结果具有独立性和不相容性,需要考虑不同指标的属性.文章基于信息熵的分析方法,通过获得水资源可持续利用综合评价的指标信息熵,由指标信息熵确定各指标的权重,再结合属性识别模型,实现对各地区水资源可持续利用的综合评价和排序.此基于熵权的属性识别模型被应用到西安市的水资源可持续利用的综合评价中,取得了较好的效果,对西安市水资源的可持续利用具有重要的指导意义.     

基于MATLAB的声波分析研究

Matlab是一款功能强大的数学软件,它附带大量的信号处理工具箱,如sptool、fdatool、wavelet、simulink工具箱等,为信号分析研究,特别是文中主要探讨的声波分析研究带来极大便利。声音的特征可用声压强,频律等各种参数描述,文中主要探究声音在频率上体现出的各种特性,并在此基础上在Matlab平台下对声纹识别技术做初步探索。