光纤转角、位移传感器的理论研究

提出了“光纤桥”新概念,利用“光纤桥”构成了测量转角、位移的光纤传感器。利用准高斯光束假设,详细地分析、计算了系统参数对传感器性能的影响,理论上预见了测角精度可达1”,测角范围±6′。     

我国化学修饰电极研究概况

评述了我国化学修饰电极的研究状况及其在电催化、富集分离、化学传感器等方面的应用，展望了化学修饰电极用于分析化学的前景。     

一种新的智能内窥镜导航系统

本文介绍了一种新的智能内窥镜导航系统。该系统用于实现内窥镜的智能导航介入。其中导航方法是基于视觉传感器和触觉传感器的多信息融合的方法。在视觉传感器中采用了一种基于自适应阈值图像分割算法的寻径方法,该方法采用加速的最大类间方差法进行阈值分割。在触觉传感器中采用了基于MEMS技术的硅微触觉传感器,四个硅微触觉传感器被封装在内窥镜头部表面,可以获得内窥镜头部全方向的压力。本文通过实验验证了该导航系统的可行性及可靠性,该方法的应用弥补了传统方法中因暗区不明显而无法引导内窥镜的不足,提高了内窥镜导航的精度和可靠性。     

化学传感器的研究进展

化学传感器是当代信息产业的重要组成部分,其发展迅速,已在人类现代生活中发挥了重要的作用。本文介绍了化学传感器的基本概念,工作原理和分类,在此基础上着重总结了相关最新研究进展,并对化学传感器的发展做出了展望。     

基于支持向量机的传感器非线性误差校正

提出了一种用支持向量机校正传感器非线性误差的原理和方法。该算法只依据样本就可以正确辩识传感器逆模型特征,而不需关于逆模型函数形式的任何先验知识,并将原问题转化为一个凸二次优化问题,能够保证找到的极值解就是全局最优解,具有较好的泛化能力。通过对电容式湿敏传感器误差校正的应用表明:该算法可取得较好的效果。     

Nonparametric estimation of a change in defect intensity

Summary.  In an important class of problems involving mixture distributions, interest focuses on the mixture proportions, considering other possible parameters as nuisance parameters. We formulate a new variation on such problems that arose in a study on the link between the number of cells in a charge-coupled detector image sensor that turned defective because of cosmic radiation and the storage conditions of such sensors. In this variation, the component densities are bivariate, there are two classes and only a subset of the mixture proportions is of relevance. We propose a nonparametric method to estimate the relevant subset of the proportions and apply our method to the data in our study.     

Where Publics May Touch

ABSTRACT

In response to the unique sensory modes of blind and partially sighted communities, tactile and multisensory tours and exhibition components of museum collections are gradually becoming more common in North America and Europe. Such initiatives are often intended to give equal forms of access for diverse participating publics. This article provides an auto-ethnographic report on the tactile tours offered by The National Gallery of Canada (Ottawa) program “Stimulating the Senses,” and gives context for sensorial models at play in Western museums today. Museum strategies that encourage intersensorial awareness and access are also discussed. Attention is given to the performative properties of these tours, and the variety of encounter they encourage between publics. This article also includes accounts of the program by its supervisor and coordinator, as well as from a participant. Key questions this article explores are: do such tours in fact give equal access; what motivates the development of such programs in Canadian institutions; and what outcomes are realized through these programs?     

三机无源定位二维布阵优化研究

针对三机无源定位二维布阵优化问题,提出了基于有效定位区面积最大准则的最优布阵方法.文中以三机时差定位、频差定位及时频差定位为例,描述了三机无源定位模型,接着基于克拉美-罗限引入了有效定位区的概念,并以其面积最大作为布阵优化准则,通过仿真研究了二维布阵优化问题.仿真结论反映了三机时差、频差及时频差定位体制的不同特性,具有较强的实际指导意义.     

“Feeling for Beauty”

ABSTRACT

May Morris (1862–1938), renowned craftswoman and daughter of William Morris, had an unconventional Victorian childhood in a home where all the members of the family were engaged in various forms of aesthetic labor, either as amateurs or professionals, and shared an aesthetic philosophy that blended the artisanal and the experimental from which would develop the Arts and Crafts movement. This article will examine the fragmentary recollections of her childhood recorded by May Morris in the introductions she wrote for the twenty-four-volume edition of The Collected Works of William Morris as a rich resource for Victorian sensory history because of the emphasis she places on the development of the child's sensorium, especially in relation to touch as the vital sense that linked family intimacy with creative activity. Employing the term “tactile aesthetics,” I show how, in the Morris household, the pleasurable sensual apprehension of the objects or materials worked by the hands of the craftsperson was inseparable from the complex feelings of connection with others. In such an environment, a feeling for beauty comprised a vital component of habitus, the embodied knowledges and aptitudes that, according to Pierre Bourdieu, are acquired from earliest childhood through the practices of everyday life within a specific social setting.     

光纤技术在灵敏结构和皮肤中的应用

简介了近几年形成的“灵敏结构和皮肤”(Smart Structures and Skins)概念,介绍光纤技术在灵敏结构中的应用,提出光纤灵敏结构今后的几个主要研究课题。