制造网格任务分解规则、方法及应用研究

为了实现制造网格的资源共享与协同工作,制造网格任务需要拆分成若干设计、制造、装配等多种类型的子任务（活动）的形式,以便于多个服务节点、多方面人员进行协作完成。分析了制造网格任务分解的基本特点,提出了一种基于QoS的制造网格任务分解规则,在此基础上,提出了制造网格任务分解的基本方法和步骤,最后,通过应用实例说明了该规则和方法的有效性和可行性。     

针对构音异常辅助治疗的声道仿真研究

针对构音异常,本文提出了使用声道仿真来实现辅助治疗的方法。基于声道是一个弯曲的、三维的具有慢时变特性的声学管道,并且在声道中的声波传播是平面波的特性,可以把声道等效于一个具有不同截面的圆柱体或者椭圆体管道。使用极点形式,在牛顿插值的基础上得到共振峰。对声道进行了60段分段,通过经验公式得到声道在不同部位的面积。定义了描述声道特性的9个参数,进而对这9个参数使用Corana算法进行优化。使用辐射模型描述声音从嘴唇辐射出去以后的特性。最后进行声音的合成,这个声音可用于反馈治疗。经过实验证明,这种声道仿真模型可以为制定合适治疗方法提供参考。     

一种基于知网语义相似度计算的应用研究

随着常见问题集(FAQ)的积累,问句数量日益增大,逐页浏览的知识获取方式很难满足用户的实际需求,也浪费用户大量的精力和时间,而基于FAQ的自动问答系统是解决该问题的一种有效途径。本文设计了QuickFaq自动问答系统框架,采用基于知网的语义相似度计算模块,找出相似问句并返回答案。实验表明,该方法提高了问答系统的召回率和不匹配率。     

多帧图像综合技术在车牌识别中的应用

本文针对车牌识别系统在车牌图像质量不高时识别准确率较低的问题,提出了一种多帧图像综合算法,来更全面地利用车牌图像中所含有的有用信息,以达到提高车牌识别准确率的目的。首先利用图像配准算法对从视频图像中抽取的几帧图像进行配准,然后利用像素值取大算法进行综合,最后得到一幅综合后的车牌图像。实验表明,经过该算法综合后的车牌图像比原图像更接近真实的车牌图像,能够更好地适用于车牌识别,从而提高车牌识别的准确率。     

Binarization and cleanup of handwritten text from carbon copy medical form images

This paper presents a methodology for separating handwritten foreground pixels, from background pixels, in carbon copied medical forms. Comparisons between prior and proposed techniques are illustrated. This study involves the analysis of the New York State (NYS) Department of Health (DoH) Pre-Hospital Care Report (PCR) [Western Regional Emergency Medical Services, Bureau of Emergency Medical Services, New York State (NYS) Department of Health (DoH), Prehospital Care Report v4.] which is a standard form used in New York by all Basic and Advanced Life Support pre-hospital health care professionals to document patient status in the emergency environment. The forms suffer from extreme carbon mesh noise, varying handwriting pressure sensitivity issues, and smudging which are further complicated by the writing environment. Extraction of handwriting from these medical forms is a vital step in automating emergency medical health surveillance systems.     

Automatic image authentication and recovery using fractal code embedding and image inpainting

In this paper, we propose a novel scheme of automatic image authentication and recovery, in which the altered region of the image can be detected and recovered in a fully automated fashion. To achieve high-quality image recovery, we choose the region of importance (ROI) in the image and perform fractal encoding for the blocks of ROI. And then we insert the fractal codes of ROI and the watermark into the original image to obtain the watermarked image. By watermark extraction, we can determine whether the watermarked image has been tampered or not. If the watermarked image has been tampered, we can automatically localize the altered region, and apply either fractal decoding or image inpainting for image recovery. Finally, experimental results are given to show the effectiveness of the proposed scheme.     

Study of diffusion mobilities of Nb and Zr in bcc Nb–Zr alloys

On the basis of the available thermodynamic parameters, the atomic mobilities of Nb and Zr in bcc Nb–Zr alloys are critically assessed as functions of temperatures and compositions by the CALPHAD method, where self-diffusion coefficients, impurity diffusion coefficients, tracer diffusion coefficients, interdiffusion coefficients and concentration curves are simultaneously optimized. Comparisons between the calculated and experimentally measured diffusion coefficients are made, where good agreement is evident. In addition, the obtained mobility parameters can reproduce a reasonable concentration profile for the Nb/Zr diffusion couple annealed at 1868 K for 5400 s.     

Web挖掘在电子商务货源搜索中的应用

在电子商务环境下,货源信息的质量将直接影响企业业务经营水平。该文对电子商务环境下的货源信息搜索问题进行分析,提出以万维网为信息源,采用Web挖掘和信息检索技术设计实现货源搜索机器人的方法。该机器人内置元搜索引擎,可以扩大搜索范围,通过对搜索信息进行分析处理,从中发现有价值的货源相关信息。     

基于RapidIO和存储映射的高速互连网络

分析当前高速互连网络中同时存在的TCP/IP, GAMMA, InfiniBand, SCI等技术的实现机制,介绍RapidIO高性能总线技术。研究RapidIO协议和MPC8548处理器的相关技术,提出在RapidIO高速互连网络中实现存储映射的通信技术解决方案。     

食品HACCP分类的BIRCH算法

食品卫生的HACCP自动分类要处理的数据集形状呈现多样性,对分类结果的准确性和专业性要求很高,已有的算法难以满足。该文基于经典BIRCH算法,结合多阈值思想和多代表点特征树思想,提出多阈值多代表点的BIRCH算法,增加了专业分类知识的指导,并对每一个代表点设立单独的阈值,使得该算法能适应各种形状的数据集,减少了聚类特征树重建次数,提高了算法的效率。