高灵敏光声探测器的研制

用ＰＺＴ－５Ａ压电材料制作光声探测器已经研究成功，探测器的主共振频率为２５０ｋＨｚ，在１０－９００ｋＨｚ范围内探测器级线性响应。光学材料对于ＫｒＦ激光的吸收效应在消光系数小于１０＾－４时也可测量到。     

Φ3英寸GaAs 0.5μm准分子激光光刻技术

详细叙述了准分子激光的工作原理和工艺特性，介绍了准分子激光光刻实验及Φ３英寸基片均匀性补偿试验的研制结果。     

Immediate usability: a case study of public access design for a community photo library

This paper describes a novel instantiation of a digital photo library in a public access system. It demonstrates how designers can utilize characteristics of a target user community (social constraints, trust, and a lack of anonymity) to provide capabilities, such as unrestricted annotation and uploading of photos, which would be impractical in other types of public access systems. It also presents a compact set of design principles and guidelines for ensuring the immediate usability of public access information systems. These principles and guidelines were derived from our experience developing PhotoFinder Kiosk, a community photo library. Attendees of a major HCI conference (CHI 2001 Conference on Human Factors in Computing Systems) successfully used the tool to browse and annotate collections of photographs spanning 20 years of HCI-related conferences, producing a richly annotated photo history of the field of human–computer interaction. Observations and usage log data were used to evaluate the tool and develop the guidelines. They provide specific guidance for practitioners, as well as a useful framework for additional research in public access interfaces.     

小波分析在光激光拾硅微谐振传感器微弱信号检测中的应用

光激光拾硅微谐振传感器在实际测量中光拾信号非常微弱，往往淹没在噪声中，无法识别其谐振频率。根据光拾信号与噪声的频率特性，采用小波多分辨分析方法将噪声与信号分离，并采用双频法识别系统，研究了采样频率与系统谐振频率的关系，在两个最佳采样频率下达到准确识别谐振频率、固有频率与阻尼比。     

立体光造形技术的精度论述

论述立体光造形技术中零件的精度问题，从ＣＡＤ模型精度，切片过程中的切片精度，激光固化光敏树脂过程的制造精度，以及后固化过程中零件的尺寸精度等各个主要方面进行了深入的探讨。     

A PRNU-based counter-forensic method to manipulate smartphone image source identification techniques

The increased diffusion of digital images generated by mobile devices through social networks, personal and professional communications, etc. is self-evident. This creates potential problems because some of these images may be used as supporting evidence for different criminal cases. In this paper, algorithms are proposed based on sensor noise and wavelet transforms which can alter the information which is usually employed to find the source of an image, and forge it so that it could point to a different, unrelated device. In the state of art we will show that there are already some algorithms capable of carrying out these manipulations, but they generally need much more and more complex data than our proposal. They also generally need physical access to the camera whose generated images you want to tamper. Our proposal algorithm to destruct the image identifiable data, only needs the picture which will be anonymized. Also, our proposal to forge the image identifiable data only needs a set of photos from the attacker camera, and the picture to be tampered. In particular, it does not need access to the camera that will be falsely linked to the picture. These scenarios are the most common and realistic. The algorithms proposed will help to strengthen existing techniques and develop new forensic approaches for mobile image source identification that will be more robust against attacks.     

一种基于区域朋友关系的机会路由算法

基于社会的机会网络中,节点趋向于和自己关系亲密的节点进行接触,因此可以通过评价节点之间的亲密程度来帮助预测节点之间的接触概率。由于节点亲密性的时间相关性和区域相关性,利用节点的历史接触信息构造节点亲密程度的评价模型时,考虑节点接触区域和节点接触时间对亲密程度的影响,从而得到节点在相应区域的亲密节点——区域朋友(Regional Friends,RF)。最后结合节点当前位置和区域朋友关系提出一种基于区域朋友关系的机会路由算法(Opportunistic Routing algorithm based on Regional Friendship,ORRF)。实验数据表明,在节点分布密度以及数据可容忍时延变化的网络环境下,该算法得到较高的数据送达率和较低的转发能耗。     

光转换聚乙烯薄膜的农田应用研究

研制了含荧光色素、光稳定剂、有机颜料、矿物填料的聚乙烯薄膜,进行了农田扣棚覆盖作物应用试验     

光纤位移传感器实用电路设计

给出一个应用于光纤位移传感器的电路设计实例     

工艺参数对真空紫外光直接光CVDSiO2—Si界面特性的影响

采用高频（１ＭＨｚ）Ｃ－Ｖ测试和红外谱，研究了工艺参数对ＸＣ激发真空紫外光直接光ＣＶＤＳｉＯ２的ＳｉＯ２／Ｓｉ界面特性的影响。结果表明，衬底温度Ｔｓ对固定氧化物电荷密度△Ｎｏｔ、慢界面态密度△Ｎ的影响比反应室总气压ＰＣ和ＳｉＨ４／Ｏ分压比显著。△Ｎｏｔ和△Ｎｓｔ在１１０℃附近有极小值。约为１０＾１０ｃｍ＾－１２量级。Ｔｓ〉１２０℃，△Ｎｏｔ呈正电荷性，Ｔｓ〈１１０℃，△Ｎｏｔ呈负电荷性，Ｓｉ－Ｏ－