图像目标的可视识别与智能跟踪

本文研究图像目标的可视识别与跟踪,给出了图像目标识别印章模型和系统总体设计方案。在此基础上,采用智能跟踪算法,实现了正常跟踪、判断、预测和记忆跟踪的功能,而且跟踪方式随着环境条件的变化而变化。正常跟踪算法的图像代数描述是简明的,与算法是内在一致的。通过给出两个实时可视跟踪的实例说明在实时ＤＳＰ可视跟踪系统上算法的性能及其可行性。     

基于B/S模式网络存储的软件实现研究

对目前主要的数据存储方式进行了介绍，针对网络中单个应用系统存储需求紧张而同时网络中存在存储资源浪费、闲置等情况，提出了用软件实现基于B／S模式的网络存储系统BSMSM(B／S Model based Shared Memory)，从而实现了跨平台的网络存储．     

名词审定工作简讯

1987年11月8－10日在南宁召开了医学名词审定委员会第一批免疫学名词二审会。出席会议18人。会议首先传达了国务院〔1987〕142号文件及全国名词审定委员会工作会议精神,统一思想,统一认识,明确名词审定工作的重要意义和肩负的艰巨任务。会议讨论了名词的排序(以相关概念排列、标数码)和反馈的意见。1987年12月15——20日海洋科学名词委员会在广州召开了广州地区海洋名词座谈会。出席会议40人。在会议上对海洋科学一千余条名词和海洋科学名词审定工作征求了意见。会议提出以下几点意见：1、海洋科学名词框架应修改。2、总论内容应调整。3、收词范围不一致,有粗有细,应统一。副词、形容词不应收。4、个别词订名不准确。5、海洋科学名词审定委员会委员名额不平衡。1987年12月24——30日在青岛召开了海洋科学名词三审会。出席会议60人。会议对二审反馈回来的意见进行了审定。会议取得了如下成果：1、重新制定海洋科学框架。2、重新调整总论部分。3、认真审定了反馈意见。4、对原定名不准确的名词进行了修改。1988年1月23日在科学院院部召开了全国自然科学名词审定委员会正、副主任会议。钱三强主任,叶笃正、吴衍庆、戴荷生、苏世生、吴凤鸣和黄昭厚副主任,院出版图书情报委员会副主任谢淑莲等同志出席了会议。钱三强同志主持了会议。黄昭厚同志汇报了1987年的工作总结和1988年工作计划。吴凤鸣同志介绍了交叉学科协调组的工作情况。会议进行了讨论,原则上同意87年总结和88年计划,并做出一些决定(见另文)。1988年2月4日在北京数学研究所召开了数学名词审定委员会主任、副主任会议。出席会议5人。会议讨论了数学名词一审后工作进展情况。会议决定开始印发征求意见稿,订于5月份召开二审会。并决定到上海和杭州去征求几何学方面的意见。1988年2月25日在北京召开了电子学名词审定委员会工作会议。出席会议17人。参加会议的有电子学名词审定委员会的主任、副主任、各组学术秘书、全国名词委黄昭厚副主任和特邀代表田志仁同志等。吴鸿适同志主持了会议、曹黄强同志介绍了前一段工作进展情况,田志仁同志通过全面研究初稿后在会上提出了修改意见。经过热烈讨论和补充,与会同志得出如下意见作为进一步修改名词初稿的依据：1、参考全国自然科学名词审定委员会制订的《名词术语审定的原则及方法》,对初稿进行修改和补充。2、抓住本学科的基本词,层次不宜太多,词数以精为好。代表电子学发展趋势的重要新词不能遗漏,收词要反映本学科特点,也要反映本学科最新水平。3、应与数、理、化等基础学科协调一致,力求统一。4、全稿应有统一体例。5、在编排方面增加总论部分,工艺技术部分统一列出,补充显示器件、表面分析技术、核电子学等。会议提出88年4月底以前拿出第二稿,然后广泛征求意见,与有关学科进行协调。计划在88年第四季度召开电子学名词审定委员会全体委员会议,进行进一步审定,以达定稿。1988年3月7日在北京召开了海洋地质与地质的协调会。出席会议的有海洋地质、地质、地理和地球物理各名词审定委员会的17名同志。会议对这几个学科的交叉术语进行了协调。如：在海洋学中的“深海”、“深渊”词,在地质学中称为“半深海”、“深海”,为统一起见,“半深海沉积”、“深海沉积”二词改为“远洋沉积”和“半远洋沉积”。又如海洋学中的“湖滩”词,在海洋地质学中称“湖坪”,协调后统一称“湖滩”。1988年3月24－25日在京召开了遥感名词协调会和地理、地质和气象协调会。参加会议23人。对各学科中有关遥感的交叉名词,做了适当调整。纠正了“潟湖”,使为“潟湖”。“热带稀树草原”订为“萨王纳”。“岩溶”与“喀斯特”定为哪个,尚在争议中。1988年4月8－10日在京召开了物理学名词终审会(审核上报稿)。87年8月三审会后又征求一次意见,这次会议对反馈的意见逐条加以讨论。对各学科有分岐的词条做了处理,如矢量、向量问题,物理学定为矢量、注明数学中称向量。对本学科有不同定名的词,列“亦可称”。讨论认为这比“又称”妥当,“又称”为100%的相等,“亦可称”表示有的场合可用,但还是推荐正文中的订名。如“角动量”,亦可称“动量矩”。曾用名即为废除名。1988年4月12－13日在京召开了地球物理学与地质学、气象学协调会。出席会议20人。对地球物理学与地质学物探专业方面交叉的名词,进行了协调,并与气象学交叉的术语进行了协调。会议决定地球物理学名词待第二次广泛征求意见后,再开协调会(梁际翔 整理)     

反相高效液相色谱法快速测定靛蓝中残留苯胺

建立了用反相高效液相色谱测定靛蓝中残留痕量苯胺含量的方法.用YWG C18(5μm,300mm×5mmID) 柱,V甲醇∶V水=70∶30的溶液为流动相,柱温30℃时于285nm波长处以外标法测定.结果表明苯胺在6.92× 10-8～3.59×10-4g/mL范围内,浓度与峰面积有良好的线性关系(r=0.9997).苯胺的回收率为98.34%～ 98.36%,相对标准偏差为1.84%～3.03%(n=5).检测限为2.02×10-9g/mL(S/N=3).实验表明该法简便、快 速,应用于实际靛蓝样品中残留痕量苯胺的测定,取得了很好的结果.     

一类非线性系统的次谐波分枝问题

研究了具有周期外力的非线性系统的解产生不同的次谐波分枝的参数范围，并且指出了无穷多次谐波分枝是如何与smale马蹄型混沌解共存的．     

Capacity Reliability of Signalized Intersections with Mixed Traffic Conditions

The reliability of capacity of signalized intersections in mixed traffic conditions involving vehicles, bicycles, and pedestrians was investigated to complete the conventional, deterministic capacity calculations. Simulations using VISSIM provided estimates of capacity distributions, and demonstrated the effects of the analysis intervals on the distributions. With the random vehicle arrivals taken into account, a capacity reliability assessment method was given as a function. Assessments were also performed...     

A Study of Melt Flow Analysis of an ABS-Iron Composite in Fused Deposition Modelling Process

Fused deposition modelling (FDM) is a filament based rapid prototyping system which offers the possibility of introducing new composite material for the FDM process as long as the new material can be made in feedstock filament form. Swinburne has been undertaking extensive research in development of new composite materials involving acrylonitrile-butadiene-styrene (ABS) and other materials including metals. In order to predict the behaviour of new ABS based composite materials in the course of FDM process, it is necessary to investigate the flow of the composite material in liquefier head. No such study is available considering the geometry of the liquefier head. This paper presents 2-D and 3-D numerical analysis of melt flow behaviour of a representative ABS-iron composite through the 90-degree bent tube of the liquefier head of the fused deposition modelling process using ANSYS FLOTRAN and CFX finite element packages. Main flow parameters including temperature, velocity, and pressure drop have been investigated. Filaments of the filled ABS have been fabricated and characterized to verify the possibility of prototyping using the new material on the current FDM machine. Results provide promising information in developing the melt flow modelling of metal-plastic composites and in optimising the FDM parameters for better part quality with such composites.     

A NAM Representation Method for Data Compression of Binary Images

A representation method using the non-symmetry and anti-packing model (NAM) for data compression of binary images is presented.The NAM representation algorithm is compared with the popular linear quadtree and run length encoding algorithms.Theoretical and experimental results show that the algorithm has a higher compression ratio for both lossy and lossless cases of binary images and better reconstructed quality for the lossy case.     

Estimating the Willingness-to-Pay for Urban Housing in Chinese Cities

The housing market, an important component of the urban economy, is closely integrated with urban development. Urban development attracts labor inflows which then increase the housing demand in the cities. Urban dwellers’ willingness-to-pay (WTP) for housing, as part of their living costs, depends on their incomes they can earn in the cities and the quality of life (QOL) they want to enjoy. Urban wage growth and quality of life improvements are always accompanied by increased demand and increased WTP. This ...     

Applying File Information to Block-Level Content Addressable Storage

Content addressable storage (CAS) is a promising technology for improving storage efficiency as well as access throughput.Currently,many CAS products are implemented on the block level,which results in loss of file information.Thus,some sophisticated optimizations cannot be achieved,such as accurate fileprefetching.This paper presents a file-aware block-level storage system combined with the CAS function.In contrast with some existing file-level CAS,this system is transparent to upper-level applications,including the operating system and the file system.These features are achieved by using smart-disk technologies to help the storage system to learn the file-system layout.A prototype was implemented on an open-source virtual machine (VM) with the guest operating system being Windows XP.Tests show that this combination significantly reduces the size of the VM image file and improves the storage performance by discarding unused blocks and using a simple file-level prefetching strategy.